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多种组合式支护结构在局部狭小空间深大基坑工程中的应用 被引量:4
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作者 杨宇松 《建筑施工》 2020年第7期1123-1125,共3页
以上海地区某一动迁安置房项目基坑工程为背景,对基坑周边可利用的支护空间有限,且常规的单一支护结构无法满足要求的方案设计难题进行了研究。通过在基坑周边局部狭小空间条件下,采用多种组合式的支护结构,在确保基坑开挖安全的前提下... 以上海地区某一动迁安置房项目基坑工程为背景,对基坑周边可利用的支护空间有限,且常规的单一支护结构无法满足要求的方案设计难题进行了研究。通过在基坑周边局部狭小空间条件下,采用多种组合式的支护结构,在确保基坑开挖安全的前提下,保证了支护结构的经济性,可为今后类似基坑工程提供一些借鉴和参考。 展开更多
关键词 深大基坑 水泥土重力式围护墙 双排 土工法桩
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Optimization design of piles subjected to horizontal loads based on reliability theory
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作者 赵文艺 徐志军 郑俊杰 《Journal of Central South University》 SCIE EI CAS 2014年第7期2928-2934,共7页
Based on reliability theory,a general method for the optimization design of piles subjected to horizontal loads is presented.This method takes into consideration various uncertainties caused by pile installation,varia... Based on reliability theory,a general method for the optimization design of piles subjected to horizontal loads is presented.This method takes into consideration various uncertainties caused by pile installation,variability of geotechnical materials from one location to another,and so on.It also deals with behavior and side constraints specified by standard specifications for piles.To more accurately solve the optimization design model,the first order reliability method is employed.The results from the numerical example indicate that the target reliability index has significant influence on design parameters.In addition,the optimization weight increases with the target reliability index.Especially when the target reliability index is relatively large,the target reliability index has significant influence on design weight of piles. 展开更多
关键词 reliability-based optimization design horizontal load objective function boundary condition first order reliability method
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