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Journal articles on the topic 'Climbing formwork'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Yao, Gang, Haoting Guo, Yang Yang, Chengming Xiang, and Soltys Robert. "Dynamic Characteristics and Time-History Analysis of Hydraulic Climbing Formwork for Seismic Motions." Advances in Civil Engineering 2021 (March 12, 2021): 1–17. http://dx.doi.org/10.1155/2021/2139153.

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With the widespread use and increasing cycle life of climbing formwork to construct high-rise buildings in earthquake-prone areas, the risk of earthquakes during the construction period increases. Hence, it is necessary to analyze the seismic response of climbing formwork. According to actual climbing formwork in the super high-rise office building of Wanda Plaza in Kunming, China, the finite element model of the climbing formwork is established on the Ansys platform. The correctness of the model is verified by comparing the natural frequencies of the actual climbing formwork and the finite element model. The time-history analysis of the climbing formwork subjected to earthquakes of varying strong magnitudes is carried out. The maximum displacement position and maximum von Mises stress position of the climbing formwork under different working conditions are determined, and the seismic response of the climbing formwork is analyzed. It has been found that when the formwork is under construction, the maximum displacement position of the climbing formwork is at the center of the long beam of the upper platform, and the maximum von Mises stress position is the joint of the outer pole of the main platform and tripod. Under the climbing condition, the maximum displacement position of the climbing formwork is at the top of the outer pole of the upper platform, and the maximum von Mises stress position is the joint of the beam of the tripod and guide rail. The climbing formwork is partially damaged under the simulated earthquake. However, the displacement is large, and some components have reached the yield state. It is recommended to strengthen the connection between the upper platform and the guide rail and enhance the strength and rigidity of the outer pole and tripod. Climbing formwork is more sensitive to horizontal earthquakes and has minimal sensitivity to vertical earthquakes. The structure attached to the climbing formwork will reduce its sensitivity to earthquakes. The research results are of practical significance for seismic design and improvement of climbing formwork.
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2

Li, Jian Ping, Jie Ruan, Pin Tan, and Xian Jun Wang. "Simulation Analysis and Structure Optimization of Steel Structure Climbing Formwork with Material Properties Used in the Large Angle Leaning Bridge Tower." Applied Mechanics and Materials 540 (April 2014): 201–4. http://dx.doi.org/10.4028/www.scientific.net/amm.540.201.

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Steel structure climbing formwork has been widely used in bridge pier and bridge tower, etc. But the design of 30 degrees slope climbing formwork design is rarely involved. The climbing formwork which in the upper surface of leaning bridge tower is affected by concrete buoyancy and the downside is affected by concrete gravity .That cause insufficient stiffness,deformation of the template,non-uniform cross-section of the bridge and large angle deviation which have great harm to the bridge quality .This paper which combined the construction project of Huaibei Xiangwang Bridge establish the mode of climbing formwork, then, import the mode to the Workbench14.5 proceeding simulation analysis. Getting the stress and deformation of the climbing formwork, check the strength and stiffness .Then optimize the structure of climbing formwork to ensure the stiffness and control the deformation of the template. The stress of downside climbing formwork after optimization is uniform and maximum stress is reduced about 30% .This paper provide a reference to the design of the climbing formwork used in the large angle leaning bridge tower.
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3

Xia, Ju-wei, Yun-long Yao, Xiao-shun Wu, and Yuan-hong Chen. "Calculation and Analysis of Hydraulic Automatic Climbing Formwork Equipment for Super-high Building Construction." Journal of the International Association for Shell and Spatial Structures 62, no. 1 (2021): 24–36. http://dx.doi.org/10.20898/j.iass.2021.003.

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Hydraulic automatic climbing formwork equipment is widely used in super-high-rise building construction due to its advantages of simple operation, fast construction speed, low cost, and high automation. Quantitative calculation of the mechanical state of climbing formwork equipment is an important technical means of ensuring safety during super-high building construction. This work thus introduces a hydraulic climbing formwork equipment structure and subsequently analyzes the construction process and the main working state of the hydraulic climbing formwork equipment. Then, for the design of the outer climbing frame of the hydraulic climbing formwork, an approximate analytical method for solving the node reaction force is proposed. Finally, combined with the actual engineering, the calculation results of the approximate analytical method and the finite element method are compared, and the calculation and analysis methods of the hydraulic climbing formwork equipment frame and key nodes are introduced. The calculation analysis process and related conclusions can be used as engineering reference for similar projects.
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4

Hu, Shicheng, and Jun Li. "Analysis of dynamic characteristics of climbing formwork under wind loads." E3S Web of Conferences 79 (2019): 01016. http://dx.doi.org/10.1051/e3sconf/20197901016.

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This article took the climbing formwork which constructed on the bridge at a height of 100 meters as the prototype, then established the finite element model and conducted modal analysis. The APDL language is used to load the wind load which is simulated by the Matlab programming then calculated the displacement and acceleration responses of the climbing formwork and further. The results show that the bending effect of the climbing formwork is more obvious. This calculation method of calculating the wind load, improve the anti-wind design method of the climbing formwork.
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5

Tian, Guo Liang. "Research on Application of New Concrete Silo Construction Technical System." Advanced Materials Research 1065-1069 (December 2014): 1577–85. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1577.

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considering the development of concrete silo structure in recent years and engineering characteristics of large reinforced concrete silo, construction processes and structures of concrete silos are classified and general construction technical system is formed through innovation of construction technique and process. The general construction technical system focuses on adjustable drawbar climbing formwork system, inside drawbar-free climbing formwork system and whole lifting and towing integrated climbing formwork system, is featured with integrated construction and has multiple technical units, which could be combined flexibly to adapt to certain requirements of different projects. This method not only has flexible process, but also possesses uniform construction technique and process.
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6

Wahyudi, M. Rizal, and Astuti Boer. "Tingkat Efisiensi Biaya Pekerjaan Bekisting Struktur Core Wall Menggunakan Metode Semi Sistem dan Climbing System Terhadap Metode Konvensional (Studi Kasus: Proyek Pembangunan Menara Bank Rakyat Indonesia Pekanbaru)." JURNAL SAINTIS 19, no. 02 (2019): 51. http://dx.doi.org/10.25299/saintis.2019.vol19(02).3917.

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[ID] Pembangunan Menara Bank Rakyat Indonesia Pekanbaru didukung dengan core wall yang merupakan struktur beton bertulang vertikal berbentuk dinding dirancang untuk menahan gaya geser, gaya lateral. Keterlambatan penyelesaian pekerjaan core wall akan mempengaruhi siklus floor to floor pembangunan bangunan yang akan berdampak pada biaya proyek, maka dibutuhkan suatu metode bekisting yang dapat memberikan dampak yang signifikan dinilai dalam hal efektif dan efisiennya dalam pekerjaan core wall. Oleh karena itu dilakukan penelitian tentang tingkat efisiensi biaya pekerjaan bekisting core wall. Penelitian ini bertujuan untuk mengetahui biaya yang dibutuhkan pada pekerjaan bekisting core wall dengan menggunakan metode konvensional, semi sistem dan climbing system dan menentukan tingkat efisiensi biaya pada pekerjaan bekisting struktur core wall menggunakan semi sistem dan climbing system dibanding konvensional. Metode pada penelitian ini adalah analisa biaya pekerjaan bekisting struktur core wall menggunakan konvensional, semi sistem dan climbing system, untuk pengerjaan struktur bangunan menggunakan sistem zona untuk waktu penyelesaian pekerjaan struktur setiap lantai selama 5 hari, dengan analisa yang terdiri dari analisa kebutuhan material dan alat bekisting, analisa kebutuhan pekerja, analisa upah harian pekerjaan, analisa upah borongan pekerjaan, analisa parameter pendukung harga satuan, analisa harga satuan bekisting, perhitungan biaya total pekerjaan bekisting. Berdasarkan hasil analisa perhitungan diperolehlah total biaya pekerjaan bekisting core wall untuk metode konvensional dengan upah harian sebesar Rp160.981.400,00 dan dengan upah borongan sebesar Rp91.522.980,00 dan untuk metode semi sistem dengan upah harian sebesar Rp125.592.380,00 dan dengan upah borongan sebesar Rp67.751.640,00 sedangkan untuk metode climbing system dengan upah harian sebesar Rp126.062.350,00 dan dengan upah borongan sebesar Rp90.485.000,00 dan tingkat efisiensi biaya pekerjaan bekisting struktur core wall untuk perbandingan menggunakan konvensional dengan semi sistem sebesar 25,97 % dan untuk perbandingan menggunakan konvensional dengan climbing system sebesar 1,13 %. 
 [EN] The construction of the Bank Rakyat Indonesia Menara Pekanbaru is supported by a core wall which is a vertical reinforced concrete structure shaped wall designed to withstand shear forces, lateral forces. Delay in completing core wall work will affect the floor-to-floor development cycle which will have an impact on project costs, so a formwork method is needed that can have a significant impact assessed in terms of its effectiveness and efficiency in core wall work. Therefore, this study was conducted to determine the costs required in the work of core wall formwork using conventional methods, semi systems and climbing systems and determine the level of cost efficiency in non-conventional core wall formwork work compared to conventional. The method in this study is the analysis of the cost of the formwork of the core wall structure using conventional, semi-system and climbing systems, for the construction of building structures using a zone system for the completion time of the structural work for each floor for 5 days. With the analysis consisting of analysis of material requirements and formwork equipment, worker needs, daily wage for work, piece rate wages, supporting parameters for unit price, unit price for formwork, and calculation of the total cost of formwork work. Based on the results of the calculation analysis, the total cost of the core wall formwork work is obtained for the conventional method with a daily wage of Rp160,981,400.00 and a piece rate of Rp91,522,980.00. For the semi-system method with a daily wage of IDR 125,592,380.00 and a piece rate of IDR 67,751,640.00, and for the climbing system method with a daily wage of IDR 126,062,350.00 and a piece rate of IDR 90,485,000.00. the level of cost efficiency work formwork core wall structure for comparison using conventional with a semi system of 25.97% and for comparison using conventional with a climbing system of 1.13%.
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7

Zhou, Ji Zhong, Qi Lin, Ming Pi Liao, Jin Ping Zhuang, and Xue Feng Cai. "Application of Modularized Low-Position Jacking Formwork System in Core-Tube Building." Applied Mechanics and Materials 405-408 (September 2013): 3103–7. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.3103.

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Compared with other template construction technology, jacking formwork system has the advantages of self-climbing, less operating personnel, good safety and good construction quality, with relatively innovative construction techniques and technology and has been widely used in the construction of tall buildings in recent years. The lifting principles and characteristics of jacking formwork were introduced in the paper. Based on the application in a tall building project, construction technologies of the formwork were introduced.
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8

Kannan, M. Ramesh, and M. Helen Santhi. "Constructability Assessment of Climbing Formwork Systems Using Building Information Modeling." Procedia Engineering 64 (2013): 1129–38. http://dx.doi.org/10.1016/j.proeng.2013.09.191.

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9

Li, Shimin, Ziqiang Yu, Zhaohu Meng, et al. "Study on construction technology of hydraulic climbing formwork for super high-rise building under aluminum formwork system." IOP Conference Series: Earth and Environmental Science 769, no. 3 (2021): 032062. http://dx.doi.org/10.1088/1755-1315/769/3/032062.

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10

Golafshani, Emadaldin Mohammadi, and Siamak Talatahari. "Predicting the climbing rate of slip formwork systems using linear biogeography-based programming." Applied Soft Computing 70 (September 2018): 263–78. http://dx.doi.org/10.1016/j.asoc.2018.05.036.

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11

Guo, Zi Hua, and Zhe Zhang. "Erection of Pearl Bridge by Bear Angle Vertical Swivel Method." Advanced Materials Research 163-167 (December 2010): 961–67. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.961.

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Bear Angle Vertical Swivel Method for arch bridge has been developed for many years overseas and obtained stated success such as Kobaru Valley Bridge in Japan and ArgenLobel bridge in Germany, this method is in the researching period right now in China. During the processing of construction, concrete of arch rib was casted vertically and then rotated, main arch ring was casted vertically by formwork climbing technology, main arch ring was laid to completed bridge elevation by using continues jacks, forming a set of swivel construction method for arch bridge.
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12

Liu, Xiaoyong, Yiming Hu, Daoyang Chen, and Lili Wang. "Safety Control of Hydraulic Self-climbing Formwork in South Tower Construction of Taizhou Bridge." Procedia Engineering 45 (2012): 248–52. http://dx.doi.org/10.1016/j.proeng.2012.08.152.

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13

Flamm, Chirstoph, Ivo L. Hofacker, and Peter F. Stadler. "RNA In Silico The Computational Biology of RNA Secondary Structures." Advances in Complex Systems 02, no. 01 (1999): 65–90. http://dx.doi.org/10.1142/s0219525999000059.

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RNA secondary structures provide a unique computer model for investigating the most important aspects of structural and evolutionary biology. The existence of efficient algorithms for solving the folding problem, i.e., for predicting the secondary structure given only the sequence, allows the construction of realistic computer simulations. The notion of a "landscape" underlies both the structure formation (folding) and the (in vitro) evolution of RNA. Evolutionary adaptation may be seen as hill climbing process on a fitness landscape which is determined by the phenotype of the RNA molecule (within the model this is its secondary structure) and the selection constraints acting on the molecules. We find that a substantial fraction of point mutations do not change an RNA secondary structure. On the other hand, a comparable fraction of mutations leads to very different structures. This interplay of smoothness and ruggedness (or robustness and sensitivity) is a generic feature of both RNA and protein sequence-structure maps. Its consequences, "shape space covering" and "neutral networks" are inherited by the fitness landscapes and determine the dynamics of RNA evolution. Punctuated equilibria at phenotype level and a diffusion like evolution of the underlying genotypes are a characteristics feature of such models. As a practical application of these theoretical findings we have designed an algorithm that finds conserved (and therefore potentially functional substructures of RNA virus genomes from spares data sets. The folding dynamics of particular RNA molecule can also be studied successfully based on secondary structure. Given an RNA sequence, we consider the energy landscape formed by all possible conformations (secondary structures). A straight formward implementation of the Metropolis algorithm is sufficient to produce a quite realistic folding kinetics, allowing to identify meta-stable states and folding pathways. Just as in the protein case there are good and bad folders which can be distinguished by the properties of their landscapes.
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14

"Static Analysis of Climbing Formwork System for High-Rise Building Construction." International Journal of Recent Technology and Engineering 8, no. 6 (2020): 4078–84. http://dx.doi.org/10.35940/ijrte.d7608.038620.

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The prime objective of this research is to develop a comprehensive framework for the static analysis of crane-dependent climbing formwork system. In this research, one of the climbing formwork systems that are commonly used for the construction of high-rise buildings known as crane-dependent is contemplated. Initially, suitable design intends of the climbing formwork system are discerned from the literatures and formwork technical reports. Additionally, various other factors influencing the analysis of the climbing formwork system are taken from the real-time construction projects. Using these information a suitable 3D finite element model of the climbing formwork system is developed. The 3D model is then analysed using a superior finite element program. The result shows significant variations in terms of deflections and stress contours. Notwithstanding the application of the real-time parameters for the analysis of climbing formwork system, the results obtained are haphazard. To overcome these shortcomings and to apprehend the situation of lack of codal provisions for the analysis of climbing formwork, a sophisticated soft computing methodology, known as Genetic algorithm is trailblazed. The optimal parameters obtained from the Genetic algorithm is then used to formulate the modified 3D finite element model. The results of the modified 3D finite element model depicts the actual behaviour of the climbing formwork system in the real-time scenario. This research portraits the comprehensive procedure for the analysis of climbing formwork systems.
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15

Jurnal, Redaksi Tim. "IDENTIFIKASI PENGARUH PENGGUNAAN RAIL CLIMBING SYSTEM PADA PEKERJAAN KONSTRUKSI COREWALL." Forum Mekanika 7, no. 2 (2019). http://dx.doi.org/10.33322/forummekanika.v7i2.203.

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In structural work, especially corewall, the use of conventional formwork systems decreases work effectiveness over time. PT. Total Bangun Persada, one of the stakeholders that applies innovation to increase the effectiveness of that is by using the rail climbing system as a solution to the problems faced. This study will compare the time effectiveness of conventional systems using corewall using the rail climbing system which was analyzed using cyclone to obtain effective repeat cycles. From the two systems, the results show that the corewall work using the rail climbing system is more effective with a work duration of 78 days compared to conventional system formwork with 84 days of work duration.
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16

Hong, Geon-Ho, and Seong-Won Jung. "Development of Auto-Climbing Formwork System for Composite Core Walls." Journal of Asian Architecture and Building Engineering, January 4, 2021. http://dx.doi.org/10.1080/13467581.2020.1869022.

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