Design method of prefabricated concrete retaining wall structure based on strut-and-tie model

被引：0
|
作者：
Cai J. [1 ]
Qian R. [1 ]
Chen Z. [1 ]
Feng J. [1 ]
机构：
[1] (Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University,Naniing 211189,China) (School of Civil Engineering,Southeast University
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2024年 / 54卷 / 03期
关键词：
force mechanism; numerical simulation; prefabricated concrete box retaining wall structure; strut-and-tie model; topology optimization;
D O I：
10.3969/j.issn.1001-0505.2024.03.014
中图分类号：
学科分类号：
摘要：
A design method for a prefabricated retaining wall structure based on the strut-and-tie model was proposed to investigate the structural force mechanism under the combined influence of water and soil pressures. The main stress skeleton obtained from numerical simulation was topologically optimized using Tosca software by taking the volume and strain energy as the optimization objectives. A tension and compression bar model was built. With the damage mechanism of the box retaining wall structure,the bearing capacity formula of three primary modes of structural damage,including the side wall compression damage mode,the water-facing retaining wall damage mode,and the cluster-connected tensile damage mode,were derived. Comparative analysis within practical engineering contexts indicates that after 900 iterations of model optimization,the optimized configuration and strain energy almost remain consistent. The load carrying capacity of the prefabricated concrete box retaining wall structure based on the strut-and-tie model is lower than those of the code and the finite element simulation,but the errors are within the range of 16%,thereby validating the method's rationality. © 2024 Southeast University. All rights reserved.
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页码：639 / 646
页数：7
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