摘要
某在建的20层剪力墙结构住宅楼,施工至14层楼面后发现4~6层部分墙体的混凝土强度存在严重质量缺陷,局部剪力墙需连续多层置换处理。结合经济性及社会影响效应,遂决定采用一种智能化主动托换系统进行剪力墙整体置换处理,本文分别从设计、施工、监测三个方面介绍了整个工程过程中的要点。对比常规剪力墙置换方式,智能化主动托换系统使得置换工作效率大幅提升,施工期间结构变形小于规范限值,在主动卸荷后,置换墙体的应力滞后效应小,使加固后结构的整体性较好。本项目施工完毕后经检测满足设计要求,现已验收并交付业主。
In a 20-story shear wall structure residential building under construction,after the construction reached the 14th floor,it was found that there were serious quality defects in the concrete strength of some walls on the 4th to 6th floors,and the local shear walls needed continuous multi-layer replacement.Combining economical and social impact effects,it was decided to adopt an intelligent active underpinning system for the overall replacement of the shear wall.This article introduces the main points of the entire project process from three aspects:design,construction,and monitoring.Compared with the conventional shear wall replacement method,the intelligent active underpinning system greatly improves the replacement work efficiency,and the structural deformation during construction is less than the specification limit.After active unloading,the stress hysteresis effect of the replacement wall is small,so that the reinforced structure overall is better.After the completion of construction,the project has been tested to meet the design requirements,and has been accepted and delivered to the owner.
作者
沈靖
张洋
王擎忠
张林波
陈军辉
SHEN Jing;ZHANG Yang;WANG Qing zhong;ZHANG Linbo;CHEN Junhui(Hangzhou Shengji Construction Special Engineering Co.,Ltd.,Hangzhou 310007,China)
出处
《建筑结构》
北大核心
2023年第S01期321-325,共5页
Building Structure
关键词
剪力墙置换
连续多层置换
主动托换
置换混凝土
shear wall replacement
continuous multi-layer replacement
active underpinning
replacement concrete
