抗拔桩布桩优化分析  

Analysis and Optimization of the Collocation of Uplift Piles

作　　者：王经雨[1] 陆道渊[1] 

机构地区：[1]华东建筑设计研究院有限公司,上海200002

出　　处：《建筑科学》2010年第5期99-101,98,共4页Building Science

摘　　要：某地下停车库的结构方案设计中,针对抗拔桩的布置形式作者尝试了多种方案。经分析,作者发现存在着两种控制工况:使用阶段水浮力最大柱荷载最大;施工阶段无水浮力施工阶段柱荷载。地基梁的设计必须同时满足两种工况下的内力配筋。对前一种工况,桩布置在地梁跨中对地梁受力合理;而对后一种工况,桩布置在柱附近更加合理。本工程为纯三层地下室,以抗浮工况为主,最合理的布桩位置接近于地梁的跨中。The author attempts several schemes for the collocation of uplift piles in the progress of planning one underground carbarn.After analysis the author find two controlling cases：the maximal hydrostatic uplift load and maximal column load in working phase,and the construction phase＇s column load without hydrostatic uplift load in construction phase.These two cases are all the condition which must be fulfilled when we design ground beams based on internal force and reinforcement.For the first case,it is rational to arrange piles in the middle of ground beams.However for the second case,it is rational to arrange piles in closing column place.This project is a underground multistoried carbarn and uplift case is the primary designning case,so it is rational to arrange piles nearby the central section of the beams.

关 键 词：抗拔桩 使用阶段 施工阶段 水浮力 柱荷载 地基梁 

分 类 号：TU473.12[建筑科学—结构工程] TU753.3[建筑科学—土工工程]