Research on optimization design method of large-scale pile-raft foundation 
in complex environment

XIE Yun-fei; CHI Shi-chun; ZHOU Xiong-xiong

doi:10.16285/j.rsm.2019.0693

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Research on optimization design method of large-scale pile-raft foundation in complex environment

更新时间：2026-06-25

- Research on optimization design method of large-scale pile-raft foundation in complex environment
- Vol. 40, Issue S1, Pages: 486-493(2019)
- 作者机构：
  
  1. 大连理工大学海岸和近海工程国家重点实验室,辽宁,大连,116024
  2. 大连理工大学建设工程学部水利工程学院工程抗震研究所,辽宁,大连,116024
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2019.0693
  CLC： TU473
- Online First：18 August 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
XIE Yun-fei, CHI Shi-chun, ZHOU Xiong-xiong. Research on optimization design method of large-scale pile-raft foundation in complex environment[J]. 2019, 40(S1): 486-493.
DOI：

XIE Yun-fei, CHI Shi-chun, ZHOU Xiong-xiong. Research on optimization design method of large-scale pile-raft foundation in complex environment[J]. 2019, 40(S1): 486-493. DOI： 10.16285/j.rsm.2019.0693.

摘要

变刚度优化设计对于复杂环境中的大规模桩筏基础始终是一个重要难题。基于有限元分析提出一种两阶段优化设计方法，该方法首先根据传统均匀布桩方案的桩顶应力分布对群桩进行分区，然后依据每个子区域桩顶应力之间的关系确定基桩数量调整系数，最后通过调整桩间距来改变各子区域的基桩数量，从而实现变刚度优化设计。运用该方法对多层土体中承担非均匀上部结构荷载的大规模桩筏基础进行变刚度优化设计，计算结果表明优化设计后筏板的差异沉降、平均整体弯矩和群桩顶部的差异应力均显著降低。该方法计算简单，应用范围广，且不受复杂土层条件、非均匀上部结构荷载以及桩基础规模大小形状的限制。

Abstract

Variable stiffness optimization design is always an important and difficult problem for large-scale pile-raft foundations in complex environments. In this article

a two-stage optimization method was developed using finite element analysis

According to the stress distribution on top of piles in the traditional design with uniform pile arrangement

the pile groups are divided into several sub-groups firstly. Then the adjustment coefficient of the number of piles is determined according to the relationships among the pile top stresses of every sub-group. Finally

by adjusting the spacing of piles to change the number of piles in each sub-group

the variable stiffness optimization design can be realized. This procedure is used to optimize the large-scale piled raft foundations with non-uniform superstructure loads in multi-layer soils. The results show that after optimal design

the differential settlement of the raft

the average overall bending moment and the differential stress at the top of the pile are significantly reduced. The method is simple in calculation and wide in application

and is not limited by complex soil conditions

non-uniform superstructure loads and the size and shape of the pile foundation.

关键词

Keywords

references

Views

162

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Optimal design of lining structure in artificial cavern of compressed air energy storage

Anti-erosion mechanisms of microbially induced calcium carbonate precipitation-vegetation synergistic slope protection

Investigation on thickness selection method of sealing steel plate for CAES gas storage caverns

Nonlinear mechanical response of surrounding rock in compressed air energy storage cavern based on Hoek-Brown criterion

Mechanical properties and microstructural evolution of peaty soils subjected to freeze-thaw cycles

Related Author

No data

Related Institution

No data

AI问答

⁰