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Journal articles on the topic 'Caissons'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

Dou, Leisi, Haitao Wang, Bin Li, Yulin Yang, and Danyang Di. "Impact of Groundwater Fluctuations on the Stability of Super-Large-Diameter Caissons before and after Reinforcement." Applied Sciences 14, no. 12 (June 7, 2024): 4971. http://dx.doi.org/10.3390/app14124971.

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Super-large-diameter caissons, serving as working wells for trenchless pipe jacking technology, are being extensively constructed alongside the increasing adoption of trenchless technology in urban areas. However, being regarded merely as ancillary structures, the structural stability of a caisson during both construction and operation phases are often neglected. This study, centered on the super-large-diameter caissons within the Jinshui River flood control project in Zhengzhou, China, systematically monitored the mechanical behavior of caisson structures and surface settlement during constru

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2

Iskander, Magued, Sherif El-Gharbawy, and Roy Olson. "Performance of suction caissons in sand and clay." Canadian Geotechnical Journal 39, no. 3 (June 1, 2002): 576–84. http://dx.doi.org/10.1139/t02-030.

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The use of suction caissons (suction piles) in marine environments has been increasing in the last decade. A suction caisson is a steel pipe with an open bottom and a closed top that is inserted into the ground by pumping water out of it. Pumping creates a differential pressure across the caisson's top that pushes it into place, thus eliminating the need for pile driving. There are a number of uncertainties in the design of suction caissons. First, the state of stress and soil conditions adjacent to a suction caisson differs from those around typical driven piles or drilled shafts. Second, the

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3

Park, Min Su, Young Taek Kim, Sangki Park, and Jiyoung Min. "Interaction Analysis between Waves and Caissons by Damping Zone Effect for Installing New Caisson on Old Caisson Breakwater." Journal of Korean Society of Coastal and Ocean Engineers 34, no. 5 (October 31, 2022): 156–68. http://dx.doi.org/10.9765/kscoe.2022.34.5.156.

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The design and construction are carried out to improve the structural stability of caisson breakwaters by installing new caissons on the front or rear of old caissons. The wave forces acting on caisson are excessively calculated by the resonance of fluid existing between the old caisson and the new caisson in the numerical analysis using potential flow. In this study, we used the damping zone option in ANSYS AQWA program to analyze the wave forces acting on individual caissons according to the interaction effects between the incident wave and the caisson. By applying the damping zone option to

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4

Leung, Chun Fai, and Rui Fu Shen. "Performance of gravity caisson on sand compaction piles." Canadian Geotechnical Journal 45, no. 3 (March 2008): 393–407. http://dx.doi.org/10.1139/t07-093.

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Gravity caissons were employed as part of the wharf front structures for a container port terminal in Singapore. This paper reports the movements of eight consecutive gravity caissons supported on sand compaction piles (SCPs) with highly variable lengths of penetration. It is established that the caisson movements increase with an increase in the length of the SCP, as longer SCPs are necessary when hard strata are at greater depth. The large caisson movements observed during caisson infilling and backfilling do not pose a concern because the wharf deck beams connecting adjacent caissons can be

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5

Park, Min Su, Young Taek Kim, Sangki Park, and Jiyoung Min. "Time Response Analysis of Caissons by Installing New Caisson on Existing Caisson Breakwater in Irregular Wave Condition." Journal of Korean Society of Coastal and Ocean Engineers 34, no. 6 (December 27, 2022): 233–46. http://dx.doi.org/10.9765/kscoe.2022.34.6.233.

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The design and the construction were carried out by installing new caissons on the back or the front of existing caissons to increase the structural stability of caisson breakwaters. In this study, we used the ANSYS AQWA program to analyze the wave forces acting on individual caissons according to the effects of wave-structure interaction when new caissons were additionally installed on existing caisson breakwaters. The wave force characteristics acting on the individual caisson were analyzed according to the distance among caissons in frequency domain analysis. In addition, the dynamic wave f

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6

Park, Min Su. "Interaction Effect between Caissons by Installation of New Caisson on Existing Caisson Breakwater in Second Order Stokes Wave Condition." Journal of Korean Society of Coastal and Ocean Engineers 33, no. 6 (December 31, 2021): 345–56. http://dx.doi.org/10.9765/kscoe.2021.33.6.345.

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In order to increase the structural stability of existing caisson breakwater, the design and the construction is carried out by installation of new caissons on the back or the front of old caissons. In this study, we use the ANSYS AQWA program to analyze the wave forces acting on individual caisson according to effects of wave structure interaction when new caissons are additionally installed on existing caisson breakwater. Firstly, the wave force characteristics acting on the individual caisson were analyzed for each period (frequency) in the frequency domain. In time domain analysis, the dyn

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7

Chakrabarti, Partha, Subrata K. Chakrabarti, Adinarayana Mukkamala, Nagaraj Anavekar, Shen Qiang, and M. Sri Krishna. "Design Analysis of Moored Floating Caisson System." Journal of Offshore Mechanics and Arctic Engineering 127, no. 2 (October 6, 2004): 75–82. http://dx.doi.org/10.1115/1.1905640.

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Tacoma Narrows Constructors (TNC) are building a new suspension bridge in Tacoma, close to Seattle, Washington State, USA. The new bridge is being built just south of the existing bridge mounted on two caissons. The caissons are constructed on location after the shallow draft caissons are towed to site. During the construction sequence, the mooring system for each caisson consists of two sets of 16 mooring lines. The lower 16 lines are hooked-up after the shallow draft caisson is towed from the harbor and positioned at the site. The fairlead locations for these lines are kept constant througho

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8

Xiang, Qiqi, Kai Wei, Fang Qiu, Changrong Yao, and Yadong Li. "Experimental Study of Local Scour around Caissons under Unidirectional and Tidal Currents." Water 12, no. 3 (February 27, 2020): 640. http://dx.doi.org/10.3390/w12030640.

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Local scour around caissons under currents has become one of the main factors affecting the safety of foundation construction and operation in coastal and offshore bridge engineering. Local scour occurs not only in the operation stage, when the caisson has settled into the sediment, but also in the construction stage, when the caisson is suspended in water. In this study, the local scour induced by unidirectional and tidal currents around settled caissons with different cross-sections (circular, square, and diamond) was experimentally investigated. Circular and square caissons were selected to

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9

Xu, Chenggen, Haitao Jiang, Mengtao Xu, Decheng Sun, and Shengjie Rui. "Calculation Method for Uplift Capacity of Suction Caisson in Sand Considering Different Drainage Conditions." Sustainability 15, no. 1 (December 27, 2022): 454. http://dx.doi.org/10.3390/su15010454.

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Uplift capacity of suction caissons is one of the main concerns in the design of jackets with multi-caissons supported offshore wind turbine. The uplift movement of suction caissons leads to soil stress variation and increases the difficulty to predict the uplift capacity. In this paper, a calculation method considering soil stress release and differential pressure contribution is proposed to predict the uplift capacity of caisson. Firstly, a series of numerical simulations based on the SANISAND model are conducted to study the uplift responses of suction caisson in sand, and it is verified wi

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10

Zhang, Ji Cheng, and Jun Yang. "Reliability Analysis on Construction Course of Open Caisson Structure." Applied Mechanics and Materials 166-169 (May 2012): 1976–80. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1976.

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The numerical model was established using ANSYS software, which took the interaction effect of subsoil and structure into account, the soil was considered as discrete spring elements. The soil’s mechanic parameters were set as random variable, probability analysis was performed on typical construction course of open caisson by Monte-Carlo method, the distribution rule of displacement random variables and their sensitivity to variable factors were studied, and the influence of uncertain factors on open caisson’s sinking attitude was investigated. The analysis model showed good practical value f

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11

Zhao, Zhifeng, Mi Zhou, Yuxia Hu, and Muhammad Shazzad Hossain. "Behavior of soil heave inside stiffened caissons being installed in clay." Canadian Geotechnical Journal 55, no. 5 (May 2018): 698–709. http://dx.doi.org/10.1139/cgj-2016-0667.

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The length of suction caisson anchors has been increasing to support increasing dimensions and weight of floating facilities, which necessitates employing horizontal ring stiffeners at intervals along the inner wall of the thin skirt of caissons to ensure structural integrity. The addition of these stiffeners has created significant uncertainties regarding soil flow mechanisms, in particular soil heave inside the caisson, which may reduce the caisson final penetration depth and influence the process of installation due to the need to avoid inside soil suction in the pumping equipment. This pap

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12

Chakrabarti, Subrata K., and Mark McBride. "Model Tests on Current Forces on a Large Bridge Pier Near an Existing Pier." Journal of Offshore Mechanics and Arctic Engineering 127, no. 3 (February 2, 2005): 212–19. http://dx.doi.org/10.1115/1.1951772.

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A suspension bridge is being built over the Tacoma Narrows, Washington. The bridge will be placed on a structure mounted on two large concrete caissons, which will be exposed to strong currents. The piers are of rectangular section with chamfered edges in the upper portion. The caissons are being built at site while floating and moored in high currents. There are no known analytical methods or experimental data available on such structures at high Reynolds number. In order to determine the forces on the caisson due to current, a series of scaled physical model tests of one of the caissons was

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13

GONZALEZ-ESCRIVA, Jose A., Josep R. MEDINA, and Joaquin M. GARRIDO. "PORT RESONANCE MITIGATION MODELED INTRODUCING ARJ-R STRUCTURES." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 38. http://dx.doi.org/10.9753/icce.v36v.structures.38.

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ARJ-R caissons are based on the "long-circuit" concept (Medina et al, 2016) that allows the extension of the destructive wave interference mechanism to mitigate low frequency oscillations without enlarging the width of the caisson. The performance of the ARJ-R caissons is referred to its reflection coefficient (Cr) which was obtained through large-scale physical model tests (Gonzalez-Escriva et al, 2018). In this paper, the effectiveness of Anti-Reflective Jarlan-type structures for Port Resonance mitigation (ARJ-R) has been assessed numerically for the port of Denia (Spain). ARJ-R structures

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14

Zhu, Bin, Jia-lin Dai, De-qiong Kong, Ling-yun Feng, and Yun-min Chen. "Centrifuge modelling of uplift response of suction caisson groups in soft clay." Canadian Geotechnical Journal 57, no. 9 (September 2020): 1294–303. http://dx.doi.org/10.1139/cgj-2018-0838.

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This paper describes a program of centrifuge model tests on the uplift behaviour of suction caisson foundations. The parameters considered were the loading rate, caisson diameter (D), soil strength profile, and type of footing (i.e., mono-caisson and tetra-caissons group). The loading responses were examined in terms of total uplift resistance, suction beneath the caisson lid, and the vertical displacements of the caisson and at the soil surface. There exists a critical uplift displacement, approximately 0.02D and 0.01D for the mono-caisson and the tetra-caissons groups, respectively, at which

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15

Cihan, Kubilay, Havva Anıl Arı, Yalçın Yüksel, and Mehmet Berilgen. "NUMERICAL ANALYSIS OF DEFORMATION BASED DESIGN FOR CAISSONS." Coastal Engineering Proceedings 1, no. 32 (January 29, 2011): 18. http://dx.doi.org/10.9753/icce.v32.posters.18.

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Caissons are used effectively to protect shorelines and harbours by reflecting wave energy towards the open sea. The successful performance of caissons has been attributed to experience and continued research. The seismic design for caissons is important since the functional loss of ports may cause severe economic loss. It is necessary to conduct a seismic design in terms of functionality so that cargo handling facilities may continue to function even after severe earthquakes. Relative displacement is an important index when the functionality of crane rails on caisson-type quay walls is discus

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16

Chakrabarti, Subrata K., and Mark McBride. "Station-Keeping Tests of Moored Caisson in Strong Current." Journal of Offshore Mechanics and Arctic Engineering 127, no. 4 (January 27, 2005): 315–21. http://dx.doi.org/10.1115/1.2073087.

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A new suspension bridge is being built over the Tacoma Narrows, Washington. The bridge will be placed on a structure mounted on two large concrete caissons. The caissons are being constructed in a floating position by pouring concrete at site. During this construction period, the floating caissons are moored in place and will be subject to high currents in the Narrows at a range of drafts. In order to investigate the motions of the caisson and the mooring line loads, physical model tests were performed at a scale of 1:100 at HR Wallingford (HRW). The actual bottom contours of the Narrows near

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17

Nakamura, Tomoaki, Naoto Nagayama, Yong-Hwan Cho, Norimi Mizutani, Yoshinosuke Kurahara, and Masahide Takeda. "Motion of Floating Caisson with Extended Bottom Slab under Regular and Irregular Waves." Journal of Marine Science and Engineering 9, no. 10 (October 15, 2021): 1129. http://dx.doi.org/10.3390/jmse9101129.

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Floating caissons may oscillate primarily due to ocean waves during towing operations. Reducing the oscillation based on the extension part (footing) of the bottom slab of the caissons can efficiently increase the safety of towing maneuvers. However, the influence of the footing length on the motion of floating caissons has not been adequately studied. This study investigates this topic through hydraulic model experiments and numerical simulations. Experimental results for regular waves show that the rotational motion (pitch) of the caisson around the wave crest direction increases owing to re

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18

Faraci, Carla, Biagio Cammaroto, Luca Cavallaro, and Enrico Foti. "WAVE REFLECTION GENERATED BY CAISSONS WITH INTERNAL RUBBLE MOUND OF VARIABLE SLOPE." Coastal Engineering Proceedings 1, no. 33 (December 14, 2012): 51. http://dx.doi.org/10.9753/icce.v33.structures.51.

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The paper reports on an experimental campaign focused on the performances of prefabricated caissons with internal rubble mound (combined caissons) in terms of incident wave energy reduction. The frontal opening and the chamber width of the caisson were changed in order to find the optimal design dimensions allowing the reflection coefficient to be reduced as much as possible. As expected, the best performances of the combined caisson occur when the rubble mound slope is gentler. The experimental results were also compared with an analytical model available in literature; such a comparison show

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19

Wang, Y. Z. "Motion and stability of caisson breakwaters under breaking wave impact." Canadian Journal of Civil Engineering 28, no. 6 (December 1, 2001): 960–68. http://dx.doi.org/10.1139/l01-040.

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The possible motions of caisson breakwaters under dynamic load excitation include vibrating motion, vibratingsliding motion, and vibratingrocking motion. Three models are presented in this paper and are used to simulate the histories of vibratingslidingrocking motions of caissons under breaking wave impact. The effect of the dynamic characteristics of the caissonfoundation system and the motions on the displacement, rotation, sliding force, and overturning moment of caissons are investigated. It is shown that the sliding force of the caisson is different from the breaking wave force direc

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20

Garrido, Joaquín María, Daniel Ponce de León, Antonio Berruguete, Silvia Martínez, José Manuel, Lisardo Fort, Diego Yagüe, Jose Alberto González-Escrivá, and Josep R. Medina. "STUDY OF REFLECTION OF NEW LOW-REFLECTIVITY QUAY WALL CAISSON." Coastal Engineering Proceedings 1, no. 32 (January 31, 2011): 27. http://dx.doi.org/10.9753/icce.v32.structures.27.

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This paper presents a new low-reflectivity quay wall caisson based on the formation of cell circuits. The cell circuit lengths can be adapted to the specific wave climate conditions at the construction site to obtain the best performance. Results from physical model tests of conventional and cell circuit caissons are described, as well as the construction process and steel reinforcement, which turns out to be quite similar to highly reflective conventional caissons. Neural Network (NN) models are used to describe the nonlinear relationship observed between experimental coefficients of reflecti

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21

Ren, Xiaozhong, and Yuxiang Ma. "Numerical Simulations for Nonlinear Waves Interaction with Multiple Perforated Quasi-Ellipse Caissons." Mathematical Problems in Engineering 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/895673.

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A three-dimensional numerical flume is developed to study cnoidal wave interaction with multiple arranged perforated quasi-ellipse caissons. The continuity equation and the Navier-Stokes equations are used as the governing equation, and the VOF method is adopted to capture the free surface elevation. The equations are discretized on staggered cells and then solved using a finite difference method. The generation and propagation of cnoidal waves in the numerical flume are tested first. And the ability of the present model to simulate interactions between waves and structures is verified by know

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22

Chakrabarti, Subrata K., Kristian K. Debus, Jonathan Berkoe, and Brigette Rosendall. "CFD Analysis of Current-Induced Loads on Large Caisson at Supercritical Reynolds Number." Journal of Offshore Mechanics and Arctic Engineering 127, no. 2 (November 23, 2004): 104–11. http://dx.doi.org/10.1115/1.1894409.

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The newly constructed Tacoma Narrows Bridge Piers represent large concrete floating caissons during their construction. For designing their mooring system the current force applied on the caissons in the Narrows must be known. The flow field around the caisson is highly complex and the calculation of the current load on the caisson by analytical means is difficult. On the other hand, model tests suffer from the distortion in the Reynolds number. Therefore, a two-prong approach was undertaken. Besides the fixed model test of the caissons for current forces, a CFD analysis of the flow around the

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23

Wang, Mingyuan, Xiaoke Liu, Xinglei Cheng, Qun Lu, Jiaqing Lu, and Miao Wang. "Penetration and Pullout Capacity of Low-Skirted Suction Caissons." Shock and Vibration 2021 (September 4, 2021): 1–12. http://dx.doi.org/10.1155/2021/2263810.

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The bearing capacity of suction caissons is the key to the design of offshore structures. A new type of cross-shaped low-skirted suction caisson is invented to effectively improve the bearing capacity, considering inevitable “soil plug” phenomenon. The behaviors of penetration and pullout for new low-skirted suction caisson are investigated by performing model tests. A new formula for calculating the penetration resistance is suggested based on the limit equilibrium theory and the test data, which can consider the change of the lateral area of the suction caisson during penetration. The behavi

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24

Chen, Xuefeng, Yucheng Li, and Liu Long. "SIMULATION OF IRREGULAR WAVE PRESSURE ON PERFORATED BREAKWATERS." Coastal Engineering Proceedings 1, no. 32 (January 21, 2011): 29. http://dx.doi.org/10.9753/icce.v32.structures.29.

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In this paper, the wave pressures on the perforated caissons breakwaters are investigated. The front wall of the perforated caissons is usually perforated above a certain water level considering the stability of the structure, and the chamber of the perforated caisson is filled with rock. Based on the RANS and k- equations, the numerical method to simulate the interaction of the irregular wave with the perforated breakwaters is researched. Moreover, the wave pressures distribution on the front perforated wall and the back wall are discussed through the numerical calculations, respectively. Th

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25

Hao, Jiawei, Dietao Ding, Jiawen Li, and Ji Huang. "The Wave Amplification Mechanism of Resonant Caisson." Journal of Marine Science and Engineering 12, no. 7 (June 21, 2024): 1038. http://dx.doi.org/10.3390/jmse12071038.

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Previous studies have introduced a resonant caisson designed to enhance wave energy extraction in regions with low wave energy density; however, its operational mechanism remains poorly understood. This paper seeks to elucidate the operational mechanism of the resonant caisson by leveraging Star-CCM+ for Computational Fluid Dynamics (CFD) simulations, focusing on the influence of guides and their dimensions on the water levels, flow velocities, and vortex dynamics. The findings demonstrate the remarkable wave-amplification capabilities of the resonant caisson, with the maximum amplification fa

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26

Gu, Haoyang, Huakun Wang, Qiu Zhai, Weibing Feng, and Jiaxiu Cao. "Study on the Dynamic Responses of a Large Caisson during Wet-Towing Transportation." Water 13, no. 2 (January 7, 2021): 126. http://dx.doi.org/10.3390/w13020126.

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Large caissons are extensively applied as deep-water foundations in marine engineering. In fact, caissons are generally prefabricated and transported to project site by wet towing. Motion responses of large caissons and those occurring during the towing process were investigated, and CO2 emissions under various conditions were calculated. These are all considered to ensure towing safety and environmental protection. The caisson resistance coefficient was simulated via Ansys Fluent software. The effects of towrope length, towing speed, and drift depth on the motion responses of caissons under t

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27

Gu, Haoyang, Huakun Wang, Qiu Zhai, Weibing Feng, and Jiaxiu Cao. "Study on the Dynamic Responses of a Large Caisson during Wet-Towing Transportation." Water 13, no. 2 (January 7, 2021): 126. http://dx.doi.org/10.3390/w13020126.

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Large caissons are extensively applied as deep-water foundations in marine engineering. In fact, caissons are generally prefabricated and transported to project site by wet towing. Motion responses of large caissons and those occurring during the towing process were investigated, and CO2 emissions under various conditions were calculated. These are all considered to ensure towing safety and environmental protection. The caisson resistance coefficient was simulated via Ansys Fluent software. The effects of towrope length, towing speed, and drift depth on the motion responses of caissons under t

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28

Xie, Liquan, Shili Ma, and Tiantian Lin. "The Seepage and Soil Plug Formation in Suction Caissons in Sand Using Visual Tests." Applied Sciences 10, no. 2 (January 13, 2020): 566. http://dx.doi.org/10.3390/app10020566.

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The rapid development of offshore wind energy in China is becoming increasingly relevant for movement toward green development. This paper presents the results of visual tests of a suction caisson used as foundation for offshore wind turbines. The distribution of hydraulic gradients of sand at the mudline in the caisson was obtained to find out the relationship with the heights of soil plugs. The relationship equation was proposed and obtained by using quadratic regression, guiding project designs, and construction. It was found that there was no soil plug in the caisson when small suction was

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29

Shi, Ping. "Model Tests on Characteristic of Suction Caissons in Saturated Fine Sand Under Intermittent Loading." Polish Maritime Research 25, s3 (December 1, 2018): 127–35. http://dx.doi.org/10.2478/pomr-2018-0121.

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Abstract Suction caissons are often used for the caissons of both offshore oil platforms and offshore wind power projects because of their advantages of simple construction, economical cost, and reusability. In this study, model tests were conducted in sand in order to investigate the effects of the caisson installation method on the penetration depth and the critical suction. Results of the test program showed that the method of changing the frequency of suction during different stages of the process can increase the penetration depth of the caisson. Combining with the deformation of the soil

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30

Nabeshima, Yasuyuki. "Installation and Lateral Resistance of Model Suction Caissons in Sandy Ground." Advanced Materials Research 1030-1032 (September 2014): 790–97. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.790.

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Suction caissons attract the attention as the foundation of offshore wind turbines. Installation and resistance behaviors of the suction caisson are important factors for the design of foundation. An installation behavior into sandy seafloor was discussed by using a model suction caisson and the failure surfaces in the aluminum rod mass, as the model ground, subjected to lateral force were compared. Consequently, the installation of model suction caisson into sandy sea depended on the permeability of sandy seafloor and lateral resistance of suction caisson depended on the dimension of suction

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31

Zhou, Hongjie, and Mark F. Randolph. "Large deformation analysis of suction caisson installation in clay." Canadian Geotechnical Journal 43, no. 12 (December 1, 2006): 1344–57. http://dx.doi.org/10.1139/t06-087.

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Large deformation finite element (LDFE) analyses were performed to study the installation of caissons by suction and jacking in normally consolidated clay. The penetration of the caisson wall was modelled between depths of one and four diameters using an axisymmetric LDFE approach, which falls in the category of arbitrary Lagrangian–Eulerian (ALE) methods. The results allowed quantification of differences in the behaviour of caissons installed entirely by jacking compared with a combination of self-weight and suction as is used in the field. For jacked installation, over the penetration range

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32

Hiraishi, Kohshi, and Taro Arikawa. "DEVELOPMENT OF PREDICTING MOTION OF FLOATING CAISSON UNDER REGULAR AND IRREGULAR WAVES." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 32. http://dx.doi.org/10.9753/icce.v37.structures.32.

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Breakwaters for outer harbor facilities are considerably affected by wave conditions, rendering the control of caisson motion difficult. Its motion during breakwater installation is important to improve its operational efficiency and safety. In recent years, caisson motion has been studied using 3D solid-gas-liquid three-phase simulations. Nakamura et al. (2021) investigated the dynamic characteristics of floating caissons under regular and irregular waves. Takagi et al. (2021) studied its sway and contact with mounds when the bottom clearance was changed and demonstrated the validity of their

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33

Shirai, Kaito, Tomoaki Nakamura, Yong-Hwan Cho, Norimi Mizutani, Yoshinosuke Kurahara, and Masahide Takeda. "Development of Coupled Numerical Model between Floating Caisson and Anti-Oscillation Tanks." Journal of Marine Science and Engineering 11, no. 9 (August 25, 2023): 1669. http://dx.doi.org/10.3390/jmse11091669.

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Floating caissons can oscillate owing to ocean waves when towed to an installation site. To reduce these oscillations, free-surface anti-oscillation tanks mounted on floating caissons have been proposed. However, no coupled numerical model exists between the motion of the floating caisson and fluid flow in the tanks based on computational fluid dynamics (CFD). In this study, a coupled model is developed and compared to existing physical experiments for validation. In the coupled model, the vertical and rotational motion of the floating caisson are computed as a rigid body, and the motion of th

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34

Sawicki, Andrzej, Łukasz Wachowski, and Marek Kulczykowski. "The Pull-out Capacity of Suction Caissons in Model Investigations." Archives of Hydro-Engineering and Environmental Mechanics 63, no. 2-3 (December 1, 2016): 157–71. http://dx.doi.org/10.1515/heem-2016-0010.

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AbstractA small-scale model experiment on the pull-out resistance of suction caissons is described. The pull-out force and suction developed within the caisson in the extraction process were recorded during the experiment. A simple breakout model, together with an elementary static formulae, is applied to predict the results obtained experimentally. There is a reasonably good agreement between the experimental results and predictions. An extensive discussion of the approach applied is included. The analysis presented in this paper is original, as it differs from other approaches mentioned in t

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35

Shen, Li. "Maṇḍala or Sign? Re-Examining the Significance of the “Viśvavajra” in the Caisson Ceilings of Dunhuang Mogao Caves". Religions 15, № 7 (30 червня 2024): 803. http://dx.doi.org/10.3390/rel15070803.

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This article delves into the exploration of a significant sign, the “viśvavajra”, found in the caisson ceilings of Buddhist esoteric art in Dunhuang’s Mogao Caves. These caissons, featuring the viśvavajra sign in the center, were prevalent from the mid-Tang period to the Western Xia dynasty (ninth to thirteenth centuries) and are recorded by The Overall Record of Dunhuang Mogao Grottoes under description as “Jiaochu Jingxin”. Similar caissons are also found in Western Buddhist Caves near Dunhuang, and Yulin Caves in Guazhou County, indicating a distinct regional character. Focusing on a well-p

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Cejuela, Eduardo, Vicente Negro, Jose María del Campo, Mario Martín-Antón, M. Dolores Esteban, and Jose Santos López-Gutiérrez. "Recent History, Types, and Future of Modern Caisson Technology: The Way to More Sustainable Practices." Sustainability 10, no. 11 (October 23, 2018): 3839. http://dx.doi.org/10.3390/su10113839.

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The construction of caisson breakwaters dates from ancient times (Brindisi battle and Caesarea Maritima, Roman Empire) of yore but has evolved with regards to technology and the materials available at all times (wood, gravel, and rubble mound). The growth in draught in vessels searching for deep water depths for berthing plus environmental problems have led to the 20th century facilitating the boom in vertical types and concrete caissons built in different ways (dry and floating techniques). Furthermore, structural criteria gave way to functional, environmental, and aesthetic criteria. The sea

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Clukey, Edward C., Charles P. Aubeny, and James D. Murff. "Comparison of Analytical and Centrifuge Model Tests for Suction Caissons Subjected to Combined Loads." Journal of Offshore Mechanics and Arctic Engineering 126, no. 4 (November 1, 2004): 364–67. http://dx.doi.org/10.1115/1.1834624.

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A plastic limit formulation was previously developed for estimating caisson uplift in cohesive soils under general conditions of vertical, horizontal, and inclined loading. The formulation considers the effects of soil shear strength profile, caisson aspect ratio, anchor line attachment depth, and load inclination angle. Load capacity predictions from the plastic limit analyses are compared to data measured in seven centrifuge tests in which model caissons are subjected to purely vertical and inclined loads of various orientations. The effect of a bevel at the caisson tip is also investigated.

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Wallace, Jeff F., and Cassandra J. Rutherford. "Response of suction caissons for tidal current turbine applications in soft clay to monotonic and cyclic vertical loading." Canadian Geotechnical Journal 55, no. 4 (April 2018): 551–62. http://dx.doi.org/10.1139/cgj-2016-0133.

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In soft marine clays, suction caissons provide a foundation system for tidal current turbines that further promote the sustainable nature of the system by allowing for their removal at the end of the structure’s design life. When configured as a multipod, the moment loads resulting from the horizontal flow of water will be transferred to the suction caissons as compression–uplift loads on opposing foundation legs. The behavior of a suction caisson in soft clay was investigated at aspect ratios of 1 and 2 under monotonic and cyclic vertical loading applicable to multipod-supported tidal current

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Jin, Shu Cheng, Yong Tao Zhang, and Qi He Wu. "A Study on the Failure Mechanism of Suction Caisson under Vertical Load." Applied Mechanics and Materials 256-259 (December 2012): 1985–89. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1985.

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As a new type of deep water offshore foundation, suction caisson is widely used to offshore structures. However, the current methods of evaluation and design cannot meet the increasing requirement of engineering practice. In this dissertation, the studies are emphasized on finite element method for analyzing the suction caisson bearing capacity behavior and the failure mechanism under the vertical load. Based on studying the vertical bearing behavior of caissons with different ratio of length to diameter L / D, it shown that as L / D increases, the vertical bearing capacity growth slowed.

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Song, Tiancheng, Albert Cheng, Eugene Khoo, Yaodong Zhang, Wan Sin Chen, and Robin Liao Bin Kui. "CAISSON DESIGN AND VERIFICATION OF FRICTION COEFFICIENT OF CAISSON FOUNDATION FOR TUAS PORT PHASE 1." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 26. http://dx.doi.org/10.9753/icce.v37.papers.26.

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Reinforced precast concrete caisson has been selected as wharf front structure for the project of Tuas Port Phase 1 in Singapore. The caisson structure and foundation were designed to withstand various loading cases comprising loads during both construction and operation stages. It was identified that sliding failure mode of the caisson structures could be one of the critical design checks. The friction tests were conducted under various conditions to assess the Coefficient of Friction (m) between rock mound surface and concrete slab of caissons. The results show that the design value mu of 0.

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Huang, Maosong, Chenrong Zhang, Linlong Mu, and Weiming Gong. "Analysis of anchor foundation with root caissons loaded in nonhomogeneous soils." Canadian Geotechnical Journal 48, no. 2 (February 2011): 234–46. http://dx.doi.org/10.1139/t10-046.

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This paper presents a novel type of deep foundation — an anchor foundation with root caissons, which improve the soil–caisson interaction using penetrating roots. A simplified analytical procedure is proposed for calculating responses of the new anchor foundation subjected to combined vertical, horizontal, and moment loadings. Caisson–soil interaction is simulated by a Winkler subgrade reaction model, with an improved Winkler spring constant to consider the reinforcement effect of roots. The method incorporates limiting soil stress to investigate soil nonlinear behavior and a transfer matrix t

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Wei, Ming Hui, Guo Bao Li, and Peng Wei Xiao. "Rehabilitation Technology for Excessive Large Gap of Joint between Caissons of Gravity Wharf." Applied Mechanics and Materials 501-504 (January 2014): 1032–38. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1032.

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Excessive large gap of joint between caissons easily lead to the rear backfill leaking into harbor basin, to cause a differential settlement of the rear terminals and even affect the structural stability. With the case about caisson wharf of a harbor in southern China, this paper puts forward a rehabilitation technology of caisson joints with mold bag concrete as the major filler. The key technologies are introduced in detail including the mold bag production and installation, the height computation of laminated pouring of concrete and underwater concreting, etc. This technical maintenance is

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Mohamedelhassan, Eltayeb, Kevin Curtain, Matt Fenos, Kevin Girard, Anthony Provenzano, and Wesley Tabaczuk. "Electrokinetic Treatment for Model Caissons with Increasing Dimensions." Advances in Civil Engineering 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/153123.

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Electrokinetic treatment has been known in geotechnical engineering for over six decades, yet, the technique is rarely used. This stems from the absence of design guidelines and specifications for electrokinetic treatment systems. An important issue that need to be investigated and understood in order to devise guidelines from experimental results is the effect of the foundation element size on the outcome of the treatment. Also important is determining the optimum distance between the electrodes and estimating the energy consumption prior to treatment. This experimental study is a preliminary

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Esteban, Miguel, Hiroshi Takagi, and Tomoya Shibayama. "MODIFIED GODA FORMULA TO SIMULATE SLIDING OF COMPOSITE CAISSON BREAKWATER." Coastal Engineering Proceedings 1, no. 32 (January 31, 2011): 47. http://dx.doi.org/10.9753/icce.v32.structures.47.

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Caisson breakwaters can continue to maintain their function if a limited amount of sliding or tilting occurs. Although this has been the focus of much research during the last years, little attention has been paid to the design of composite caisson breakwaters (i.e. caissons protected with armour layers). The present paper outlines laboratory experiments that were carried out to propose a modification of the Goda formula (1974) that takes into account the increased pressures that can be exerted by waves due incomplete armour layers at the seaside face of the caisson. The effect that this modif

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Wang, Jian, Li Sha Chai, and Hao Wu. "Numerical Simulation on the Sinking Process of Open Caisson with Particle Flow Code (PFC)." Advanced Materials Research 838-841 (November 2013): 831–34. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.831.

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Sidewall pressure is important to open caisson design. However, FEM simulation for the sinking process of open caisson is quite difficult due to extremely large deformation including soil flow and solid boundary movement. In order to overcome this problem, Particle Flow Code (PFC), which is based upon discrete element method (DEM), was applied to simulate the whole sinking process of an open caisson using proposed load servo mechanism, and the variations of the sidewall pressure with sinking depth and elevation were investigated. The outcomes agree well with the in-situ observation data and th

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Liu, Wei, Zhihuai Huang, and Mi Zhou. "Numerical Study on the Behavior of Square Stiffened Caissons Penetrating into Normally Consolidated Clay." Advances in Civil Engineering 2021 (August 30, 2021): 1–10. http://dx.doi.org/10.1155/2021/1607854.

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Significant difference between predicted and measured installation resistance of stiffened suction caissons was identified due to the existing uncertainty regarding the mobilized soil flow mechanisms. This paper describes an extensive investigation of square stiffened caisson penetration in nonhomogeneous clays undertaken through large deformation FE (LDFE) analysis to identify the soil flow mechanisms around and between lateral ring stiffeners. A detailed parametric study has been carried out, exploring a range of nondimensional parameters related to stiffened caisson geometry, caisson roughn

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Lee, Byeong Wook, Jae-Sang Jung, Woo-Sun Park, and Jae-Seon Yoon. "Wave Force Characteristics and Stability of Detached Breakwaters Consisting of Open Cell Caissons Interlocked via Crushed Stones." Water 12, no. 10 (October 15, 2020): 2873. http://dx.doi.org/10.3390/w12102873.

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The maximum external force acting on a long continuous harbor structure can be reduced by controlling the phase difference of forces acting longitudinally. This strategy can be used to increase the structural stability of breakwaters consisting of caissons. Breakwaters have been developed using interlocking caissons to effectively respond to the constant increase in wave height due to climate change. In this study, we investigated the wave force characteristics and stability of a detached breakwater consisting of open cell caissons interlocked via crushed stones. We performed wave basin experi

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Perminov, Nickolai. "SIMULATION OF A DEFECTLESS LIFECYCLE OF UNIQUE UNDERGROUND STRUCTURES OF THE SEWAGE SYSTEM AT THE STAGE OF THEIR CONSTRUCTION IN DIFFICULT SOIL CONDITIONS." International Journal for Computational Civil and Structural Engineering 15, no. 1 (March 25, 2019): 119–30. http://dx.doi.org/10.22337/2587-9618-2019-15-1-119-130.

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Emperor Alexander I Saint-Petersburg State Transport University, Saint-Petersburg, RUSSIA Abstract: Simulation of the parameters of a defectless lifecycle of large caissons at the stage of their plunging into heterogeneous soil milieu allows considerable expansion of the area of rational use of underground areas of megacities for deep transport facilities and engineering infrastructure due to provision of structural safety and sustainable operation of a special underground structure. Mega sizes of an RC caisson allow creating open underground areas, unique in volumes and deepness. The an

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Wang, He, Rui Wang, and Jian-Min Zhang. "Solid-Fluid Coupled Numerical Analysis of Suction Caisson Installation in Sand." Journal of Marine Science and Engineering 9, no. 7 (June 26, 2021): 704. http://dx.doi.org/10.3390/jmse9070704.

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Suction caissons are widely used foundations in offshore engineering. The change in excess pore pressure and seepage field caused by penetration and suction significantly affects the soil resistance around the caisson wall and tip, and also affects the deformation of the soil within and adjacent to the caisson. This study uses Arbitrary Lagrangian–Eulerian (ALE) large deformation solid-fluid coupled FEM to investigate the changes in suction pressure and the seepage field during the process of the suction caisson installation in sand. A nonlinear Drucker-Prager model is used to model soil, whil

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Yu, Chen. "Numerical simulation of pounding damage to caisson under storm surge." E3S Web of Conferences 38 (2018): 03046. http://dx.doi.org/10.1051/e3sconf/20183803046.

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In this paper, a new method for the numerical simulation of structural model is proposed，which is employed to analyze the pounding response of caissons subjected to storm surge loads．According to the new method，the simulation process is divided into two steps. Firstly, the wave propagation caused by storm surge is simulated by the wave-generating tool of Flow-3D, and recording the wave force time history on the caisson. Secondly，a refined 3D finite element model of caisson is established，and the wave force load is applied on the caisson according to the measured data in the first step for furt

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