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Articles de revues sur le sujet « Pile performance »

Auteur : Grafiati

Publié le 3 juin 2025

Mis à jour le 31 juillet 2025

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1

Teji, Biya Degefu, and Argaw Asha Ashango. "Performance Optimization of Piled Raft Foundations in Layered Soil under Uniform Vertical Loading Using Plaxis 3D." Advances in Materials Science and Engineering 2023 (November 20, 2023): 1–11. http://dx.doi.org/10.1155/2023/6693876.

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Piled raft foundations are composite foundations that combine piles and raft to support civil engineering structure and to reduce the settlement. The data were obtained from Addis Ababa, Ethiopia. In this study, the effects of raft thickness, number of piles, pile length, spacing of piles, and pile diameter on the response of piled-raft foundations were investigated using the finite element-based program Plaxis 3D for layered soils (medium to very stiff high plastic silty clay and medium to very dense silty sand soil) subjected to uniform vertical loading. The results showed that increasing th

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2

Li, Zheming, Malcolm D. Bolton, and Stuart K. Haigh. "Cyclic axial behaviour of piles and pile groups in sand." Canadian Geotechnical Journal 49, no. 9 (2012): 1074–87. http://dx.doi.org/10.1139/t2012-070.

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Piled foundations are often subjected to cyclic axial loads. This is particularly true for the piles of offshore structures, which are subjected to rocking motions caused by wind or wave actions, and for those of transport structures, which are subjected to traffic loads. As a result of these cyclic loads, excessive differential or absolute settlements may be induced during the piles’ service life. In the research presented here, centrifuge modelling of single piles and pile groups was conducted to investigate the influence of cyclic axial loads on the performance of piled foundations. The inf

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3

Xiong, Wenlin, Zihang Li, Dan Hu, and Fen Li. "Performance Analysis of Pile Group Installation in Saturated Clay." Applied Sciences 14, no. 18 (2024): 8321. http://dx.doi.org/10.3390/app14188321.

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In offshore pile engineering, the installation of jacked piles generates compaction effects within soil, thus further affecting previously installed adjacent piles. This study proposes a three-dimensional numerical model for pile group installation, soil consolidation, and loading analysis. Subsequently, the effect of pile spacing and pile length-to-diameter ratio on the deformation, internal forces, and vertical bearing capacity of adjacent piles are investigated. The results indicate that with an increase in pile center distance, the peak lateral displacement of the adjacent piles decreases,

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4

Leung, C. F,, C. W. Ong, and K. Y. Yong. "Effect of Tunneling on Adjacent Piled Foundation in Clay." Journal of Civil Engineering and Construction 8, no. 1 (2019): 19–24. http://dx.doi.org/10.32732/jcec.2019.8.1.19.

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Soil movements arising from tunnel excavation may induce severe stresses on adjacent piled foundations. This paper investigates the behavior of piles due to nearby tunneling in soft clay using centrifuge modeling technique. Centrifuge modeling has an advantage that the consolidation time of the clay under forced gravity field can be expedited significantly to study the long term performance of a pile due to tunneling. The types of piles investigated in the present study include floating pile, socketed pile and end bearing piles with different pile head conditions. The test results on the induc

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5

Paikowsky, Samuel G., and Robert V. Whitman. "The effects of plugging on pile performance and design." Canadian Geotechnical Journal 27, no. 4 (1990): 429–40. http://dx.doi.org/10.1139/t90-059.

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During installation of open-pipe piles, soil enters the pile until the inner-soil cylinder develops sufficient resistance to prevent further soil intrusion and the pile becomes "plugged." In spite of its frequent occurrence, only limited attention has thus far been given to this phenomenon and its consequences. The effects of plugging on pile performance and design are examined in reference to the following aspects: ultimate static capacity, time-dependent pile capacity, and dynamic behavior. Pile plugging is shown to have the following effects: marked contribution to the capacity of piles dri

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6

Kumar Malviya, Dinesh, and Manojit Samanta. "Performance of unequal piled raft under vertical loading in cohesionless medium." IOP Conference Series: Earth and Environmental Science 1336, no. 1 (2024): 012036. http://dx.doi.org/10.1088/1755-1315/1336/1/012036.

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Abstract The performance of piled rafts with unequal pile lengths in cohesionless soil under vertical loading was investigated in the present study through experimental and numerical analysis. A pattern function is used to define the pile length arrangement. The motivation for considering such a function is to ensure that the varying pile lengths follow a suitable geometric pattern, and it does not obstruct the construction practice in field applications. The piles at different locations within the raft were equipped with strain gauges to observe the strain distribution along their lengths dur

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7

Samirsinh, P. Parmar. "A Review on Piled- Raft Foundation analysis methods and Recommendations in Research." Research and Review: Journal of Structural and Building Construction 1, no. 1 (2025): 1–20. https://doi.org/10.5281/zenodo.14807735.

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<em>Piled raft foundations have gained significant popularity in recent years due to their ability to enhance bearing capacity, minimize settlement, and mitigate differential deflection. This foundation system efficiently distributes structural loads, with the raft directly transferring part of the load to the soil while the piles contribute through skin friction. Compared to conventional pile foundations, piled raft foundations offer economic advantages by allowing pile termination at higher elevations without penetrating the full depth of weak soil layers. However, they exhibit more settleme

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8

B., M. Kalbande, I. Dhatrak A., and W. Thakare S. "Experimental Assessment of Performance of XCC Pile in Sand." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 4346–51. https://doi.org/10.35940/ijeat.C6244.029320.

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XCC (X-Section Cast in place Concrete) pile is new type of pile developed on the basis of cast-in-place pile from the conventional circular pile and capable of resisting displacement. In this study, an attempt is made to investigate the performance of XCC Pile under different loading conditions viz., vertical loading, lateral loading and uplift loading. Experimental investigation is carried out on small scale model piles embedded in sand, by changing type of loading and distance between arc to diameter ratio of the pile. The relative density of soil, type of soil and spacing between the piles

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9

Qian, Yongmei, Hualong Li, Wei Tian, et al. "Effect of Pile Spacing on Load Bearing Performance of NT-CEP Pile Group Foundation." Buildings 15, no. 9 (2025): 1404. https://doi.org/10.3390/buildings15091404.

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The NT-CEP pile is an innovative type of pile that builds upon the conventional concrete straight-hole cast-in-place pile. It primarily consists of two components: the main pile and the bearing plate. The key factors influencing its load-bearing capacity include the pile diameter, the cantilever dimensions of the bearing plate, and the slope of the bearing plate’s foot, among others. The pile spacing significantly influences the bearing capacity of NT-CEP pile group foundations. The overall bearing capacity of an NT-CEP pile group foundation is not merely the sum of the ultimate bearing capaci

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10

Xie, Yunfei, Shichun Chi, and Maohua Wang. "Influence of Variable Rigidity Design of Piled Raft Foundation on Seismic Performance of Buildings." Mathematical Problems in Engineering 2020 (March 14, 2020): 1–13. http://dx.doi.org/10.1155/2020/1780197.

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In order to reduce the costs and improve the overall performance of building systems, the static optimized design with variable rigidity of piled raft foundations has been widely used in recent years. Variable rigidity design of piled raft foundations that support midrise buildings in high-risk seismic zones can alter the dynamic characteristics of the soil-pile-structure system during an earthquake due to soil-pile-structure interaction. To investigate these aspects, a nuclear power plant sitting on multilayered soil is simulated numerically. The paper describes a numerical modeling technique

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11

Hasibuan, M. Husni Malik, Jupriah Sarifah, and Ferdi Irawan. "ANALYSIS OF CONFIGURATION OF PILE GROUP ON SUPPORTING CAPACITY AND PILE EFFICIENCY IN TANJUNG BALAI FLAT CONSTRUCTION." Jurnal Teknik Sipil dan Arsitektur 29, no. 1 (2024): 50–58. http://dx.doi.org/10.36728/jtsa.v29i1.2774.

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In the TanjungBalai Flats creation project, the inspiration used is a mini pile basis with a set pile device. The organization pile device on the inspiration withinside the creation of this flat is deliberate to have a exclusive wide variety of piles, particularly piles, 3 piles, 4 piles. Therefore, on this look at diverse pile configurations might be completed with the aid of using modelling exclusive configurations with the equal wide variety of piles as the development of this flat. Furthermore, the sporting ability and performance values might be as compared that is the first-class value.

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12

Alhassani, Athraa Mohammed Jawad, and Ala Nasir Aljorany. "Parametric Study on Unconnected Piled Raft Foundation Using Numerical Modelling." Journal of Engineering 26, no. 5 (2020): 156–71. http://dx.doi.org/10.31026/j.eng.2020.05.11.

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Piled raft is commonly used as foundation for high rise buildings. The design concept of piled raft foundation is to minimize the number of piles, and to utilize the entire bearing capacity. High axial stresses are therefore, concentrated at the region of connection between the piles and raft. Recently, an alternative technique is proposed to disconnect the piles from the raft in a so called unconnected piled raft (UCPR) foundation, in which a compacted soil layer (cushion) beneath the raft, is usually introduced. The piles of the new system are considered as reinforcement members for the subs

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13

Pando, Miguel, George Filz, Carl Ealy, and Edward Hoppe. "Axial and Lateral Load Performance of Two Composite Piles and One Prestressed Concrete Pile." Transportation Research Record: Journal of the Transportation Research Board 1849, no. 1 (2003): 61–70. http://dx.doi.org/10.3141/1849-08.

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Composite piles use fiber-reinforced polymers (FRPs), plastics, and other materials to replace or protect steel or concrete, with the intent being to produce piles that have lower maintenance costs and longer service lives than those of conventional piles, especially in marine applications and other corrosive environments. Well-documented field loading tests of composite piles are scarce, and this lack of a reliable database may be one reason that composite piles are not in widespread use for load-bearing applications. The purpose of this research is to compare the axial and lateral load behav

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14

Zhang, Hao, and Ming Lei Shi. "Mechanical Performance of Settlement-Reducing Pile Foundation with Cushion." Advanced Materials Research 368-373 (October 2011): 2545–49. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.2545.

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The main objective of adding piles to a raft is sometimes for settlement control. In design, the number of piles for reduce settlements under work load to a tolerable limit is usually small. This often results in a high stress in piles that may impede the application of this foundation due to the limits on raft stress or pile stress in practice. An alternative is to install a cushion between piles and raft. In this paper, the performance of disconnected settlement-reducing piles is studied. Based on some simplifications, a mechanical model of pile penetration into cushion and a calculation met

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15

Ahmed, Danish, Siti Noor Linda Bt Taib, Tahar Ayadat, and Alsidqi Hasan. "Numerical Analysis of the Carrying Capacity of a Piled Raft Foundation in Soft Clayey Soils." Civil Engineering Journal 8, no. 4 (2022): 622–36. http://dx.doi.org/10.28991/cej-2022-08-04-01.

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Piled raft foundations are a common type of foundation for high-rise buildings. Unlike shallow foundations, deep foundations (piles) pass through weak or soft soil deposits and can reach stiff soil or bedrock to support the weight of the structure. In this paper, the performance of a medium embedment depth piled raft foundation in soft soil is presented. A numerical model was developed and a parametric study was conducted in order to simulate the case of such a foundation system and to investigate its performance in soft clay. This parametric study investigated the effect of the geometry of a

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16

Qian, Yongmei, Qingzhi Cao, Yang Yang, Da Teng, and Tingting Zhou. "Influence of Pile Spacing on the Compressive Bearing Performance of CEP Groups." Buildings 14, no. 5 (2024): 1447. http://dx.doi.org/10.3390/buildings14051447.

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Pile spacing is an important factor affecting the bearing capacity of concrete expansion pile (CEP) groups. In this study, a pile group was simulated and analyzed using ANSYS software R19.0. The influence of pile spacing on the bearing capacity of the pile group under a vertical load was determined using three sets of four-, six-, and nine-pile models with different pile spacings. The grid division of the pile soil model adopts a mapping method, using the contact types of rigid and flexible bodies and applying surface loads to the model piles step-by-step. After vertical pressure was applied t

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17

Elsawwaf, Mostafa, Marwan Shahien, Ahmed Nasr, and Alaaeldin Magdy. "The behavior of piled rafts in soft clay: Numerical investigation." Journal of the Mechanical Behavior of Materials 31, no. 1 (2022): 426–34. http://dx.doi.org/10.1515/jmbm-2022-0050.

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Abstract This research aims to investigate the applicability and performance of piled rafts in soft clay. This aim has been achieved by studying how the pile length, pile number, raft-soil relative stiffness, and presence of a sand cushion beneath the raft would affect piled raft settlement, differential settlement, and load sharing. Piled rafts have been numerically simulated using PLAXIS 3D software. Experimental testing results were used to verify the numerical simulation. The portion of the load carried by the piles to the total applied load was represented by the load sharing ratio (GPR).

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18

Tan, Feng Yi, and Xin Zhi Wang. "Numerical Analysis for Bearing Performance of Flexible Piles Composite Foundation Influenced by Modulus’ Changes." Advanced Materials Research 261-263 (May 2011): 1694–98. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1694.

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The bearing performance of composite foundation improved by flexible piles was influenced by changes of cushion’s modulus, the modulus ratio between soil on bottom of pile and soil surrounded pile, which was analyzed by the finite element method. Results showed that: 1.For single pile, by increasing of cushion’s modulus, the bearing performance nearby the top of flexible pile increased apparently, and the common tendency of settlement of pile and soil surrounded piles was affected negatively. For multi-piles, the increasing of cushion’s modulus resulted in the increasing of bearing performance

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19

Guo, Shilang, Fei Gan, Hong Wang, Jing Bi, Biao Liu, and Yuanyin Zhang. "Vertical bearing performance of inclined high-pressure rotary spray pile." PLOS ONE 20, no. 3 (2025): e0319849. https://doi.org/10.1371/journal.pone.0319849.

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Inclined piles are increasingly adopted in the foundation design of large-scale transmission line towers. Nine inclined pile tests were conducted in red clay soil to investigate the load-bearing and deformation behavior and the load transfer mechanism of inclined piles under vertical loading. The effects of pile inclination and length-to-diameter ratio on axial force, bending moment, shear force, and lateral friction force were analyzed. The test results indicate that: (1) As the inclination angle increases, the settlement of the inclined pile increases under vertical loading. (2) The axial fo

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20

Gunawan, H., L. Flessati, and P. Marveggio. "Optimizing foundation performance: the impact of raft on piled raft foundation in sand." Géotechnique Letters 15, no. 2 (2025): 1–5. https://doi.org/10.1680/jgele.24.00136.

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Conventional piled foundation designs tend to be overly conservative since the beneficial role of the raft is often neglected by assuming the piles to be the only part of the structure interacting with the soil. The contribution of the raft to the global response of the foundation is particularly important in the case of “large” piled rafts, where the pile length is comparable to the raft width. This configuration, although not theoretically optimal, is common for existing foundations of bridges and high-rise buildings. Although the beneficial effect of raft–pile–soil interaction on both beari

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21

Melese, Fekadu. "Improved Performance of Raft Foundation Using Detached Pile Columns in Loose Subsoil Conditions." Advances in Civil Engineering 2022 (March 8, 2022): 1–18. http://dx.doi.org/10.1155/2022/4002545.

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Piles act as settlement reducers in case of connected piled-raft foundation and hence decrease the settlements of the raft. The design concept of the connected piled-raft foundations is to lessen the number of piles and utilize the bearing capacity of the system piled raft. Due to significant straining actions at the pile head-raft connection, an alternative technique is proposed to disconnect the piles from the raft. A granular layer (cushion) beneath the raft is incorporated. The disconnection has a beneficial effect on reducing axial load compared to connected piles. For small piled rafts,

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22

Wang, Xingwei, Xu Wang, Jiandong Li, Deren Liu, Yanjie Zhang, and Daijun Jiang. "Field Test Study of Performance of Bored Piles in Collapsible Loess." Applied Sciences 13, no. 24 (2023): 13113. http://dx.doi.org/10.3390/app132413113.

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Bored piles comprise an advanced pile foundation technology that has the advantages of high bearing capacity, fast construction speed, stable construction technology, and no noise or mud pollution. To study the applicability of bored piles to collapsible loess sites, the compaction effect and load-bearing characteristics of bored piles before and after immersion were studied via a full-scale field test combined with the theory of hole expansion. The results indicate that when the pile spacing is 1.0, 1.25, and 1.5 m, the average dry density of the soil between piles increases by 23.8%, 18.5%,

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23

Ko, Kil-Wan, Heon-Joon Park, Jeong-Gon Ha, et al. "Evaluation of dynamic bending moment of disconnected piled raft via centrifuge tests." Canadian Geotechnical Journal 56, no. 12 (2019): 1917–28. http://dx.doi.org/10.1139/cgj-2018-0248.

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When connected piles are used as settlement reducers, the proportion of vertical load carried by the pile may come close to the allowable load of the pile. To reduce not only the vertical load, but also the lateral load and bending moment to which the pile is subjected, the disconnected piled raft (DPR) has been introduced as an effective design for the role of the settlement reducers. Although several DPRs have been constructed, most of the research efforts on DPRs are limited to the structural behavior such as the evaluation of the seismic acceleration of the structure on the DPR; thus, ther

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Al-Neami, Mohammed, and Mariam Wasmi. "Influence of cyclic loading on performance of steel piles in sandy soil." MATEC Web of Conferences 162 (2018): 01012. http://dx.doi.org/10.1051/matecconf/201816201012.

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This paper introduces an experimental study to clarify the response of steel pile models exposed to the cyclic loading. Thirty six models of two types of steel piles are tested (open ended pile and H-pile) with lengths equal to (30, 40, and 50) cm. Three diameters (2.5, 3.5, and 4.1) cm for open ended pipe pile and three flange widths (2.6, 3.6, and 4.4) cm for H-pile are investigated. Jacking technique is employed to installed piles models in dry sandy samples with two different relative densities (60% for medium sand 80% for dense sand). It is found that the pile geometry (diameter and lengt

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25

Wu, Lijun. "Performance of Geosynthetic-Reinforced and Cement-Fly Ash-Gravel Pile-Supported Embankments over Completely Decomposed Granite Soil: A Case Study." Advances in Materials Science and Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/2659628.

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This paper presents a full-scale test of the high-speed railway embankment to investigate the performance of cement-fly ash-gravel (CFG) pile-supported embankments over completely decomposed granite (CDG) soils. The authors compared the embankments built on CDG soils reinforced by geogrid only and geogrid and CFG piles in terms of ground settlement, layer settlement, and pile efficacy. Experimental results show that the CFG pile-supported embankment built on CDG soils performs well. The soil arching of CFG piled reinforcement is effective and significantly increases with surrounding soil conso

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Arun Kumar, K., and P. Seethalakshmi. "Performance Evaluation Of Disconnected Piled Raft System Under Vertical And Lateral Loading." IOP Conference Series: Earth and Environmental Science 1326, no. 1 (2024): 012123. http://dx.doi.org/10.1088/1755-1315/1326/1/012123.

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Abstract The present study analyses the performance of Disconnected Piled Raft (DPR) foundations on soft clay soil using PLAXIS-3D under varying lateral loading conditions. A 3*3 square patterned group of piles with a layer of 1 m thickness cushion overlain by a rigid raft foundation was simulated for conducting a parametric study by varying cushion material, lateral loading, and diameter of piles under constant vertical loading of 300 kN/m2. The cushion material selected was sand and geofoam, while the diameter of the piles varied from 0.5m to 1.5m by keeping the constant centre-to-centre spa

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Huang, Fuyun, Yulin Shan, Ahad Javanmardi, Xiaoye Luo, and Baochun Chen. "Seismic Performance of Various Piles Considering Soil–Pile Interaction under Lateral Cycle Loads for Integral Abutment Jointless Bridges (IAJBs)." Applied Sciences 10, no. 10 (2020): 3406. http://dx.doi.org/10.3390/app10103406.

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The flexural pile foundation is used in integral abutment jointless bridges (IAJBs) in practical engineering to effectively dissipate the horizontal reciprocating deformation induced by the ambient temperature or earthquake loadings. Various types of flexural piles including the H-shaped steel pile (HP), prestressed concrete pile (PC), prestressed high-strength concrete pile (PHC) as well as the reinforcement concrete pile (RC) have been implemented in IAJBs. However, there is a lack of comprehensive studies on the flexural deformation and seismic performances of these piles. In order to inves

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Ng, C. W. W., C. Shi, A. Gunawan, L. Laloui, and H. L. Liu. "Centrifuge modelling of heating effects on energy pile performance in saturated sand." Canadian Geotechnical Journal 52, no. 8 (2015): 1045–57. http://dx.doi.org/10.1139/cgj-2014-0301.

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The operation of energy piles in summer can expel excess heat of the buildings into the ground by the use of a heat pump. Despite having been implemented for decades, the design of energy piles still relies heavily on empiricism, as there is limited understanding about heating effects on pile capacity. A series of centrifuge model tests on aluminum energy piles in medium dense saturated sand is reported in this study to investigate heating effects on the settlement patterns as well as capacities of single piles. In total, four in-flight pile load tests under three different temperatures, namel

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Zhu, Huailong, Bitang Zhu, Changjie Xu, Wei Liu, and Dongdong Guo. "Assessment of Earth Retaining Performance for Long-Short Piles Composite Structures from Field Experiments and Numerical Analysis." Buildings 12, no. 10 (2022): 1524. http://dx.doi.org/10.3390/buildings12101524.

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Retaining pile structure is commonly utilized in excavation maintenance design. In recent years, the long-short combined retaining piles have received more and more attention. According to the actual deep excavation engineering, the working mechanism of the long-short, long-double-short, and long-triple-short combined retaining piles was tested in the field. Based on the field test parameters, the finite element model of the test area was established and the simulation results were verified, and the effects of short pile length and pile spacing on bending moment, horizontal displacement of pil

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Prakoso, Widjojo, and Amelia Yuwono. "Performance of pile groups and multiple pile group systems in soft clay-silt deposits." Journal of Sustainable Engineering: Proceedings Series 2, no. 1 (2024): 17–22. https://doi.org/10.35793/joseps.v2i1.2950.

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The acceptable performance of pile groups and multiple pile group systems subjected to lateral forces would be critical in ensuring the overall performance of the supported structures. This issue is explored further for driven concrete piles in soft clay-silt deposits, and this paper is to examine the performance of driven piles in pile groups and multiple pile group systems by performing a series of 3D finite element analyses. Three clay-silt shear strength values are assumed to represent typical soft-medium clay-silt deposits. Major findings reported include 1) the additional “efficiency” fa

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31

Melchior Filho, José, Alfran Moura, and Fernando Monteiro. "Contribution for a root pile installation control approach using a digital odometer." Soils and Rocks 45, no. 3 (2022): 1–10. http://dx.doi.org/10.28927/sr.2022.077121.

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A root pile is a form of injection pile (cast-in-place with pressure, with very distinct construction aspects from the known micropile type). During the mortar shaft development, these piles are inserted using distinct injection pressures of up to 500 kPa. Static load tests are typically used to control root piles, which can be an expensive and time-consuming testing procedure. Static load tests were performed on eight monitored piles with diameters of 350 and 410 mm to investigate root pile performance control during pile installation. This research presents a refined and developed alternativ

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Albusoda, Bushra S., and Anmar F. Alsaddi. "Experimental study on performance of laterally loaded plumb and battered piles in layered sand." Journal of Engineering 23, no. 9 (2017): 23–37. http://dx.doi.org/10.31026/j.eng.2017.09.02.

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This study introduces a series of single and pile group model tests subjected to lateral loads in . multilayered sand from Karbala, Iraq. The aim of this study is to investigate: the performance of the pile groups subjected to lateral loads; in which the pile batter inclination angle is changed; the effect of pile spacing (s/d) ratio, the influence of using different number of piles and pile group configuration. Results revealed that the performance of single negative (Reverse) Battered piles with inclination of 10° and 20° show a gain of 32% and 76 % in the ultimate lateral capacity over the

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33

Cao, Wei Ping, and Min Zhao. "Performance of Floating Piles for Supporting Embankments in Soft Soils." Applied Mechanics and Materials 105-107 (September 2011): 1433–37. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1433.

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Reinforced concrete piles are often used to support highway embankments in soft soils. The performance of floating piles differs significantly from that of end-bearing piles. A numerical analysis was conducted to investigate the soil stress concentration ratio, pile and soil settlements, pile axial force, negative skin friction (NSF) and the location of the neutral plane (NP) during embankment filling and consolidation of soft soils when the soft soils is treated by using reinforced concrete floating piles. The results indicate that the pile axial force as well as negative skin friction is clo

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Sakr, Mohammed. "Performance of helical piles in oil sand." Canadian Geotechnical Journal 46, no. 9 (2009): 1046–61. http://dx.doi.org/10.1139/t09-044.

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The results of a comprehensive pile load-test program and observations from field monitoring of helical piles with either a single helix or double helixes installed in oil sand are presented in this paper. Eleven full-scale pile load tests were carried out including axial compression, uplift, and lateral load tests. The results of the full-scale load tests are used to develop a theoretical design model for helical piles installed in oil sand. Test results confirm that the helical pile is a viable deep foundation option for support of heavily loaded structures. The test results also demonstrate

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35

Ayaz, Hassam, Mohammed Faizal, and Abdelmalek Bouazza. "Thermo-energy performance of neighbouring energy piles." Soils and Rocks 45, no. 1 (2022): 1–10. http://dx.doi.org/10.28927/sr.2022.076521.

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Energy piles are often closely spaced such that the thermal response of one pile might affect the response of neighbouring piles through heat transfer in the soil. This paper examines the changes in extracted energy and ground temperature of two cast-in-place bored energy piles installed below a six-storey building, with a diameter of 0.6 m, length of 10 m and 3.5 m centre-to-centre distance. Field experiments were conducted on singular and dual piles for cooling and cyclic temperatures, continuous daily operation of the ground source heat pump (GSHP) and intermittent cyclic operations with st

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Ahmed, Danish, Siti Noor Linda Bt Taib, Tahar Ayadat, and Alsidqi Hasan. "A Review on the Behaviour of Combined Stone Columns and Pile Foundations in Soft Soils when Placed under Rigid Raft Foundation." ASM Science Journal 16 (July 15, 2021): 1–8. http://dx.doi.org/10.32802/asmscj.2021.709.

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In the last few decades, it has been observed that raft foundations are very commonly used as a foundation solution for moderate to high rise structures either by resting on stone columns or on piles in soft soils. It is believed that, combining stone columns and piles in one foundation system is the more suitable foundation for medium rise structures. The combined foundation system provides a superior and more economical alternative to pile, and a more attractive alternative to stone columns in respect to ground improvement. This paper presents the review of existing studies reported in the l

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Lanyi-Bennett, Stephen A., and Lijun Deng. "Axial load testing of helical pile groups in glaciolacustrine clay." Canadian Geotechnical Journal 56, no. 2 (2019): 187–97. http://dx.doi.org/10.1139/cgj-2017-0425.

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The behaviour of helical pile groups has not previously been experimentally investigated through field testing. In the present study, field compressive load tests of 2 × 2 helical pile groups and single piles were conducted in a glaciolacustrine clay in Edmonton, Canada. The group pile spacing, interhelix spacing, and soil setup time were varied. Piezometers were used to measure the excess pore pressure (ue) response to pile installation. Selected groups contained a strain gauge instrumented pile that was used to estimate the pile load transfer and failure mechanism. Group performance was eval

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Tan, Cheng, Xu Jiang, Xuhong Qiang, and Mingxin Fan. "Flexural Performance of Carbon Fiber-Reinforced Polymer Prestressed Spun High-Strength Concrete Pile." Applied Sciences 14, no. 16 (2024): 7170. http://dx.doi.org/10.3390/app14167170.

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Prestressed spun high-strength concrete (PHC) piles are commonly used in various types of structures, including bridges, buildings and marine infrastructures. However, piles installed in aggressive environments are vulnerable to corrosion of the steel, which can lead to rapid degradation of the piles. As a corrosion-resistant material, carbon fiber-reinforced polymer (CFRP) is considered an alternative to steel tendons for durability enhancement. In this study, a new pile system with CFRP was proposed. Experimental tests of three full-scale piles and a numerical analysis of eight piles with va

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Zhang, Xuqun, Zhili Li, Siyuan Zhang, et al. "Comparative Investigation of Axial Bearing Performance and Mechanism of Continuous Flight Auger Pile in Weathered Granitic Soils." Buildings 13, no. 11 (2023): 2707. http://dx.doi.org/10.3390/buildings13112707.

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Axial bearing performance and mechanism of continuous flight auger (CFA) pile in weathered granitic soils, i.e., a widespread special soil in South China, were investigated by field test in this study. Load–settlement responses of four CFA piles were examined, and evolutions of shaft/base resistances were captured by ultra-weak fiber Bragg gratings (UWFBG) with a reflectivity ≤−40 dB. Performances of CFA piles were compared with those of a slurry displacement (SD) pile at the same site, thirteen pretensioned spun high-strength concrete (PHC) piles in the literature and empirical data in design

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Odelola, Michael, Seyed Saman Khedmatgozar Dolati, Armin Mehrabi, and David Garber. "Alternative Splicing Options for Ultra-High-Performance Concrete (UHPC) H-Piles." Buildings 15, no. 3 (2025): 481. https://doi.org/10.3390/buildings15030481.

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Pile splicing is generally considered in construction because of transportation limits, length requirements, construction means and methods, and strength capacity. A major challenge in the use of precast prestressed UHPC piles is the lack of efficient and effective splicing solutions. To address the problem, this study evaluated different pile splicing methods for UHPC H-piles and their constructability. The analysis and design for strength capacity and detailing presented here are based on relevant established guidelines and design codes for UHPC. This study assessed two pile splicing methods

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Qian, Yongmei, Tingting Zhou, and Wei Tian. "Anti-Overturning Bearing Capacity of Rigid and Flexible Concrete Expanded Piles Subjected to Horizontal Load." Advances in Civil Engineering 2020 (July 8, 2020): 1–14. http://dx.doi.org/10.1155/2020/4901069.

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The concrete expanded pile is a new type of pile in the field of foundation engineering, which exhibits improved performance compared to the ordinary straight-hole pile. The expanded technique increases the bearing capacity of the pile, changes the overall load-bearing function of the pile body, and offers great development prospects. While the performance of the expanded pile has been studied for vertical loading, the performance of expanded pile when subjected to horizontal loading is not adequately understood. In order to investigate the performance of concrete expanded pile in resisting ho

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Ali, Omar Kareem, and Hassan O. Abbas. "Performance Assessment of Screw Piles Embedded in Soft Clay." Civil Engineering Journal 5, no. 8 (2019): 1788–98. http://dx.doi.org/10.28991/cej-2019-03091371.

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Screw piles are widely used in a variety engineering applications supplying stability against compression, overturning moment, uplift tension, and horizontal loads. Screw pile is a famous solution for support light structures, roads and rail signs which have relatively low-capacity foundation. In this study, the behavior of circular (10) mm solid screw pile models embedded in a bed of soft clay soil covering a layer of sandy soil has been studied. The 200 mm thick sand layer was compacted in a steel container with a diameter of 300 mm into four sublayers. The sandy soil layer was compacted at

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Sun, Yan, and Man Yang. "The Analysis of Long Pile for Piled Raft Foundation Reinforcement." Advanced Materials Research 1065-1069 (December 2014): 223–26. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.223.

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For high-rise buildings piled raft foundation reinforcement, use ANSYS to establish the piled raft foundation complement pile reinforcement model which is called long-short-piled raft foundation. Parameters of complement pile respectively from the aspects of pile length and pile diameter for change, study its effect on piled raft foundation vertical bearing performance. Provide certain reference value for practical engineering.

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Zhang, Cong, Zhongju Feng, Yunhui Guan, Huiyun Chen, Fuchun Wang, and Boxi Xu. "Study on Liquefaction Resistance of Pile Group by Shaking Table Test." Advances in Civil Engineering 2022 (January 25, 2022): 1–12. http://dx.doi.org/10.1155/2022/5074513.

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This study investigated the antiliquefaction property of the pile group. It is shown in the pore pressure ratio, pile acceleration, and bending moment response of saturated silt fine sand. The response law of pile acceleration and bending moment during liquefaction development is proved. The results show that liquefaction occurs in single piles, four piles, and six piles under the action of 0.35 g seismic wave. But the time of liquefaction is different. There is an obvious difference in the response of pile acceleration and bending moment during liquefaction. Liquefaction in the saturated silt

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Zhu, Rui, Feng Zhou, Zhihui Wan, et al. "Improving the Performance of Piled Raft Foundations Using Deformation Adjustors: A Case Study." Buildings 12, no. 11 (2022): 1903. http://dx.doi.org/10.3390/buildings12111903.

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Complicated soil conditions are direct difficulties for high-rise building projects. A new device called a deformation adjustor, which is used to optimize the stiffness distribution in the piled raft system, has achieved good results for this challenge. This paper presents a case study on the application of deformation adjustors to improve the performance of a piled raft foundation. This case study describes the preliminary design of pile-raft foundations with deformation adjustors, followed by numerical analysis. Based on the numerical study, the potential savings are demonstrated due to the

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Zhao, Zhi Meng, Jin Yi Chai, and Cai Xia Fan. "Numerical Simulation Analysis of Bearing Performance of Extra-Long and Large-Diameter Single Pile." Advanced Materials Research 1065-1069 (December 2014): 943–48. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.943.

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The effects of pile diameter, the property of pile end bearing stratum, the material parameters of pile shaft and the changes of pile length on the bearing performance of extra-long and large-diameter single pile were examined with the finite element software ABAQUS to make the numerical simulation analysis, by establishing the overall axial symmetry model, which was based on the data of static load test of single pile at the Yellow River Bridge site. The results show that the ultimate bearing capacity of single pile, the stiffness and the end resistance ratio would increase gradually, whereas

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Du, Ting, Yubo Li, Xiaohua Bao, Waiching Tang, and Hongzhi Cui. "Thermo-Mechanical Performance of a Phase Change Energy Pile in Saturated Sand." Symmetry 12, no. 11 (2020): 1781. http://dx.doi.org/10.3390/sym12111781.

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To reduce the thermal response and improve the heat storage capacity of energy piles, a phase change (PC) energy pile was proposed. This innovative PC pile is made of concrete containing macro-encapsulated PCM hollow steel balls (HSB) as coarse aggregates. A numerical model was developed to simulate the thermo-mechanical behaviors of the PC pile under thermal cycles and sustained loading. The computational model is a three-dimensional model that is symmetrical for the two horizontal directions in geometry. Heat transfer process follows conservation laws of energy. The numerical model was valid

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Chai, X. J., K. Deng, C. F. He, and Y. F. Xiong. "Laboratory Model Tests on Consolidation Performance of Soil Column with Drained-Timber Rod." Advances in Civil Engineering 2021 (March 19, 2021): 1–8. http://dx.doi.org/10.1155/2021/6698894.

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Timber pile is an ancient technology applied in soft ground improvement for more than 1000 years. With the rise of many high-rise buildings, many types of modern mechanized-construction piles are widely developed and applied; for example, steel pile, precast concrete pile, sand pile, and gravel pile are widely used instead of timber piles. Yet, in some special conditions, timber piles have certain advantages due to their environment-friendly characteristics, which result in obvious economic benefits and suitability. To overcome the weakness of the traditional timber pile technology and expand

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Qian, Yongmei, Shengbo Lin, Zunpeng Liu, Da Teng, and Huaqiang Li. "Finite Element Simulation Analysis of the Influence of Pile Spacing on the Uplift Bearing Performance of Concrete Expanding-Plate Pile Groups." Symmetry 16, no. 6 (2024): 731. http://dx.doi.org/10.3390/sym16060731.

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Concrete expanding-plate piles (CEP piles) represent a novel type of variable cross-section concrete cast-in-place pile, wherein one or more bearing plates are added to the pile body to enhance its load-bearing capacity. Compared to traditional uniform-diameter uplift piles, the bearing plates of CEP uplift piles provide additional resistance against uplift, substantially increasing the pile’s uplift bearing capacity. CEP piles exhibit a wide range of application potential in structures such as high-rise buildings, cable-stayed bridges, and offshore platforms. However, due to changes in the lo

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Ericson, Willy, Hendy Wijaya, and Amelia Yuwono. "ANALISIS PERFORMANCE LEVEL SENDI PLASTIS LOKAL PADA FONDASI TIANG TUNGGAL DAN TIANG KELOMPOK." JMTS: Jurnal Mitra Teknik Sipil 3, no. 3 (2020): 695. http://dx.doi.org/10.24912/jmts.v3i3.8825.

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Foundation is part of the structure that was build first and the most important part to guarantee the establishment of a building. The foundation function in general are to carry and distribute building loads into the ground. The loads channeled into the ground in the form of axial loads and lateral loads. Generally for high buildings used in the form of foundation piles or bored piles. To find out the design capabilities of a building in maintaining its robustness, naturally some analysis of the lower and upper structures needed. Especially in the lower structure, which is the foundation of a

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