南京德基广场超深全逆作法综合施工技术  

Construction Technology for Super-deep Reverse Method of Nanjing Deji Plaza

作　　者：刘春安[1] 廖秋林[1] 曾志献 曾广桃 张悦[2] 

机构地区：[1]北京城建集团建筑工程总承包部,北京100088 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083

出　　处：《施工技术（下半月）》2011年第1期1-4,共4页Construction Technology

基　　金：国家科技支撑计划子课题(2008BAJ06B02-2);国家自然科学基金资助项目(40702052)

摘　　要：南京德基广场二期工程是国内地下逆作层数最多的大型房建工程之一。在详细阐述该工程概况、复杂的地质条件与脆弱的周围环境的基础上,分析了该工程采用逆作法施工的理由与施工总体部署,并深入分析该逆作法工程的特点、难点。基于此,针对该逆作法工程所需解决的各项难点技术问题,阐述了施工中技术攻关后所采取的各项关键施工技术,包括穿软土嵌硬岩地下连续墙、超深逆作法基坑分层按需式动态降水、高精度超深逆作法支撑桩柱一体化施工、逆作法土方与结构交叉施工工况科学化、独特的逆作法结构内防水施工、基础底板大体积混凝土施工以及监测主导的立体信息化施工等。The second stage of Nanjing Deji Plaza is one of major housing constructions with most layers using reverse construction method interiorly.The general engineering situation,complex geologic condition and surrounding environment are introduced.The reasons of using reverse construction method and its construction assignments are explained.Features and difficulties of reverse construction method are deeply analyzed.According to those situations,many kinds of key construction techniques are taken to resolve those difficulties,such as super-deep diaphragm wall of crossing soft soil and imbedding rock,stratified on-demand dynamic dewatering for foundation ditch using super-deep reverse method,high-accuracy bracing-pile integration construction of super-deep reverse method,scientific alternate construction of earthwork and structure,special in-frame waterproof construction,mass concrete construction of foundation mat and information construction.

关 键 词：逆作法 支撑桩柱一体化施工 动态降水 

分 类 号：TU473.2[建筑科学—结构工程]