高层建筑逆作法设计分析

Reverse Design Analysis of High-rise Buildings

针对近年来地下工程逐渐向复杂化、深层化方向发展,出现大量开挖深度深和周边环境条件复杂基坑工程的情况,以杭州市上城区某高层钢板组合剪力墙结构地下工程为例,介绍了逆作法设计过程:围护结构设计及施工中需要注意的问题;一柱一桩竖向支撑系统设计,钢立柱垂直度控制要求、沉降和抬升控制要求,调垂方法;水平支撑体系主要采用地下室楼层结构梁板设计中的考虑点、水平受力计算分析、梁柱连接构造等。可为同类型地下工程逆作法设计提供借鉴。

Given the gradual develpment of underground engineering in recent years,there are now numerous foundation pit projects with deep excavation depths and complex environmental conditions.Using the example of a high-rise steel plate composite shear wall structure in the Shangcheng District of Hangzhou City,this paper introduces the design and analysis process of the top-down method.This includes enclosure design,considerations for design and construction of the enclosure structure,design of the one column and one pile vertical support system,require-ments for verticality control,settlement and lifting control requirements for steel columns,and vertical adjustment methods.Additionally,the paper covers considerations ftor the design of the horizontal support system,with a focus on when the beam and slab of the basement floor structure are mainly used,including horizontal force calculation and analysis,and beam-column connection structure.This study provides valuable reference for the reverse construction design of similar underground engineering projects.