地下连续墙结构承载体系设计

地下连续墙既作为基坑临时维护结构,又作为地下室结构外墙;中间支撑桩既作为逆作施工时竖向临时承载,又作为工程永久竖向承载;地下各层结构楼板作为水平支撑以保证竖向承载体系及地下连续墙侧向稳定。三者有机结合形成了地下结构逆作时的整体稳定体系。

地下连续墙在城市深基坑工程中的应用

结合杭州联合银行地下连续墙工程实例,对基坑方案的选择和地下连续墙的设计要点进行了介绍,并通过监测数据对设计进行了验证,阐述了施工后发现的质量问题产生的原因和应对方案,可供类似工程参考。

Design Concept for an Anchored Diaphragm Wall in the Central Part of Budva, Montenegro

This paper presents a design concept and acceptance test application procedure for a deep pit protection structure. The structure is intended for use in the construction of three underground levels of a residential building： A, B, C and D, located in Block 10C, Budva, Montenegro. The anchored wall will consist of non-gravity cantilevered walls with three levels of ground anchors. Non-gravity cantilevered walls employ continuous walls constructed in slurry trenches （i.e., slurry （diaphragm） walls）, e.g., vertical elements that are drilled to depths below the finished excavation grade. For those non-gravity cantilevered walls, support is provided through the shear and bending stiffness of the vertical wall elements and passive resistance from the soil below the finished excavation grade. Anchored wall support relies on these components as well as lateral resistance provided by the ground anchors to resist horizontal pressures （e.g., earth, water and external loads） acting on the wall. The anchored wall analyzed in this paper will be recommended for use as a temporary supporting structure necessary for the excavation and erection of the underground structure. The design life of the temporary ground anchors is two years. Dynamic loads are not considered in this analysis.

当前深基坑围护工程存在的问题与对策

由于近年来上海地区深基坑围护工程施工难度和数量的不断增加 ,基坑支护的设计和施工的可靠性变得越来越重要。本文就这一课题展开讨论 ,总结出一些经验教训和对策。