|本期目录/Table of Contents|

[1]胡志平,姚海明,罗丽娟.确定深基坑隆起破坏面的优化方法[J].地球科学与环境学报,2005,27(03):44-48.
　HU Zhi-ping,YAO Hai-ming,LUO Li-juan.Optimization of bulge fracture plane searching in foundation pit[J].Journal of Earth Sciences and Environment,2005,27(03):44-48.
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确定深基坑隆起破坏面的优化方法(PDF)
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第27卷
期数:
2005年第03期
页码:
44-48
栏目:
出版日期:
2005-09-15

文章信息/Info

Title:
Optimization of bulge fracture plane searching in foundation pit
作者:
胡志平1; 姚海明2; 罗丽娟1
1.长安大学建筑工程学院,陕西西安710061;2.上海市政二公司,上海200092
Author(s):
HU Zhi-ping 1; YAO Hai-ming2; LUO Li-juan1
1. School of Civil Engineering, Chang’ an University, Xi’ an 710061,China; 2. Shanghai Second Municipal Engineering Corporation, Shanghai 200092,China
关键词:
深基坑支护; 隆起破坏; 优化; 桩土插入比; 安全系数
Keywords:
supporting structure;  bulge fracture;  optimization; insertion ratio of supporting structure;  safe index
分类号:
TU431
DOI:
-
文献标志码:
A
摘要:
采用有限元程序求得深基坑支护结构和土体开挖前后的应力状态以及土体任一点处的极限状 态函数值;运用人工参与的优化方法选择坑底最大可能隆起破坏的起点与终点以及潜在隆起破裂面的 形状和位置,并计算相应的安全系数。计算表明,潜在破裂面终点的位置对围护桩插入比不敏感,而潜 在破裂面起点位置随围护桩入土深度的增加而逐渐靠近围护桩。工程实例证实了组合优化算法对潜在 破裂面确定的有效性和实用性。
Abstract:
Stress status of supporting structure and the retained soil was analyzed with FEM in foundation pit, and the value of limiting status function of retained soil was calculated. With“artificial participation” optimization, the shape and position of potential bulge fracture plane in foundation pit were calculated with the dijkstra algorithm and the relative safety coeffi- cient was proposed. Large scale numeric calculation and in situ measurements show that the end point of potential fracture plane is insensitive to the insertion ratio of supporting pile, that the start point of potential fracture plane is near the support- ing pile when the insertion of pile is increasing. The in situ measurements show the availability and utilization of method of the potential bulge fracture plane searching based on the optimization algorithm in composite optimization.

参考文献/References:

[1] 罗嗣海 , 潭昌明 , 李忘. 水土合算 法土压力 计算时的 强度指标 [J] . 岩土工程学报 , 1998 , 20(1):59 ～ 64.
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备注/Memo

备注/Memo:
[收稿日期]2005-03-12
[作者简介]胡志平(1973-),男,湖南益阳人,讲师,博士,从事地下结构设计理论与风险评估研究。
更新日期/Last Update: 1900-01-01