地层厚度非均匀性对基坑支护结构稳定性的影响分析
Analysis of Influence of Non-uniformity of Stratum Thickness on Stability of Foundation Pit Supporting Structure
田中伟 1胡倩 2黄艳冬 3黄亚冉4
作者信息
- 1. 山东昌嘉市政工程有限公司,山东 聊城 252000
- 2. 临清市自然资源和规划局土地综合整治和规划技术服务中心,山东 聊城 252000
- 3. 聊城岽信工程造价咨询事务所(有限公司),山东 聊城 252000
- 4. 山东聊建集团有限公司,山东 聊城 252000
- 折叠
摘要
文中通过建立基坑支护结构仿真模型,模拟分析均匀和非均匀条件下基坑桩体水平位移、弯矩以及桩后土方压力随桩深增加的变化规律.结果表明,桩体水平位移随着桩深的增加先保持不变后快速降低,桩顶的水平位移最大,桩端位移最小;桩体弯矩随着桩深的增加先增加(0～6 m)、后降低(6～8 m)、再基本维持不变;桩体桩周土压力随着桩深的增加而不断增加.随着施工进度的不断推进,桩顶水平位移开始不断增加,但是桩端水平位移受到的影响不大;桩体的弯矩不断增加,桩周土的土压力不断降低.
Abstract
In this paper,a simulation model of foundation pit supporting structure is established to simulate and analyze the changes of horizon-tal displacement,bending moment and earthmoving pressure of foundation pit pile with pile depth under uniform and non-uniform conditions.The results show that the horizontal displacement of pile remains unchanged at first and then decreases rapidly with the increase of pile depth.The horizontal displacement of pile top is the largest and the displacement of pile end is the smallest.With the increase of pile depth,the ben-ding moment of pile body first increases(0～6 m),then decreases(6～8 m)and then basically maintains the same.The soil pressure around pile increases with the increase of pile depth.With the progress of construction,the horizontal displacement of pile top increases continuously,but it has little effect on the horizontal displacement of pile end.The bending moment of pile body increases continuously,and the soil pressure around pile decreases continuously.
关键词
基坑工程/地层厚度/非均匀性/支护结构/稳定性Key words
Foundation pit engineering/Formation thickness/Non-uniformity/Supporting structure/Stability引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据