既有砖混结构在软土地区迫降纠倾法分析  

Analysis of forced settlement rectification method of available brick-concrete structures in soft soil area

作　　者：张晓楠[1] 史三元[1] 路漫[1,2] 刘立波[1] 

机构地区：[1]河北工程大学土木工程学院,邯郸056038 [2]河北正纲律师事务所,邯郸056038

出　　处：《建筑结构》2016年第8期88-94,共7页Building Structure

基　　金：国家自然科学基金项目(51378169);河北省自然科学基金项目(E2013402072)

摘　　要：在深入分析云南省某砖混住宅建筑倾斜原因的基础上,结合加固纠倾实例,提出采用截桩与开挖应力释放沟联合应用的综合纠倾法。采用ABAQUS软件对分批截桩进行了模拟,分析了截桩过程中的地基应力、土体沉降、基础梁的应力、桩体竖向位移以及上部结构应力,为后续纠倾设计与施工方案提供了依据。在实际施工中采用三种监测方法来进行信息化的施工。实际监测结果表明,随着各批次截桩的进行,建筑物倾斜率回归到允许值以内,保证了建筑物在纠倾过程中的安全。Based on the in-depth analysis on tilt reason of a brick-concrete structure residential building in Yunnan Province and combined with rectification reinforcement examples,a comprehensive rectification method was proposed using the pile chopping and excavated stress release ditch jointly. Batch chopping pile process was simulated using the ABAQUS software. Parameters in pile chopping process were analyzed including the foundation stress,soil settlement,foundation beam stress,pile body vertical displacement as well as the upper structure stress,which provides the basis for the subsequent rectification design and construction scheme design. In the actual construction,three monitoring methods were adopted to conduct informational construction. The actual monitoring results show that,with conduction of each batch of pile chopping,the building inclination rate returns within allowable value,which guarantees building safety in the process of rectification.

关 键 词：软土地区 砖混结构 截桩迫降法 纠倾加固 ABAQUS软件 现场监测 

分 类 号：TU398.5[建筑科学—结构工程]