邯郸市基坑支护选型探讨

THE RESEARCH ON THE LECTOTYPE OF EXCAVATION SUPPORT IN HANDAN

近年来,我国常用的基坑支护形式有水泥土搅拌桩、土钉支护、锚杆支护、支护墙体、复合型土钉支护以及排桩墙支护体系等。从基坑支护方面来看,每一种支护结构都不是万能的,各有其适用范围和局限性。基于基坑工程的区域性、综合性和个性的特点,结合邯郸市地层以第四纪新近沉积土、一般沉积土为主,而且地下水位埋深较浅的地质条件,提出了适用于邯郸市的基坑支护形式主要有土钉墙、复合土钉墙和"排桩+锚杆+止水帷幕"围护结构体系,以期为邯郸市及与之有相似情况的地区在基坑支护选型方面提供借鉴。

In recent years,cement-soil mixing pile and soil nailing and bolting support,supporting wall,the composite soil nailing support and row pile wall supporting system,etc have been used for deep excavations.From the aspects of foundation excavation,each kind of supporting structure is not omnipotent,and each has its scope and limitations.Based on the regional,comprehensive and personality characteristics of excavation engineering,and combined with Handan's newly clays,general clays,shallow underground water level,the suitable supporting types of Handan have been put forward as follows :soil nailing wall,composite soil-nailed wall and 'row pile +anchor+ water-stop curtain'supporting structure system.The purpose of this article is to provide reference for Handan and some areas having similar conditions.