TOD全框支剪力墙结构软基处理后基础约束效应分析  

Analysis of the Foundation Constraint Effect of TOD Full-Frame Shear Wall Structure after Soft Foundation Treatment

作　　者：郭达文 余瑜 李希锴 陈星 赵盈皓 GUO Dawen;YU Yu;LI Xikai;CHEN Xing;ZHAO Yinghao(Guangdong Architectural Design&Research Institute Co.,Ltd.Guangzhou 510010,China;Earthquake Engineering Research&Test Center,Guangzhou University Guangzhou 510405,China;Guangzhou Construction Co.,Ltd.Guangzhou 510030,China)

机构地区：[1]广东省建筑设计研究院有限公司,广州510010 [2]广州大学工程抗震研究中心,广州510405 [3]广州建筑股份有限公司,广州510030

出　　处：《广东土木与建筑》2022年第11期44-47,共4页Guangdong Architecture Civil Engineering

基　　金：广州市建筑集团有限公司科技计划项目([2021]-KJ005)。

摘　　要：针对车辆段上盖全框支剪力墙高层结构无地下室嵌固特点,选取一典型的框支剪力墙结构建筑,建立土-结构三维有限元模型,进行水平地震和风作用下有限元分析,重点研究结构在软基情况及地基处理后的桩顶水平位移和内力规律。分析表明,在软土情况下,桩顶的水平位移显著,引起桩身附加弯矩不可忽视;采用水泥搅拌桩加固等地基处理的方法,可有效减小水平作用下桩顶位移,同时对水泥搅拌桩处理方法的置换率及加固深度给出参考值。According to the characteristics of the none basement full-frame shear wall structure with Vehicle depot cover,selects a typical full-frame shear wall structure,to establishes a 3D soil-structure interactional finite element model.The finite element analysis is main to studied the regularity of the horizontal displacement of the pile top and the bending moment of the pile,after soft foundation treatment under the earthquake and wind load cases.The analysis results show that the horizontal displacement of the pile top is obvious,and the additional bending moment of the pile can’t be ignored.It is effective to reduce the displacement of the pile top after the soft foundation treatments,such as the cement mixing pile reinforcement.The paper also put forward some referenced foundation treatment depth and replacement rate of the cement mixing pile.

关 键 词：车辆段上盖 全框支剪力墙结构 土-结构相互作用 软基处理 桩顶水平位移 

分 类 号：TU318.2[建筑科学—结构工程]