复杂条件深基坑止水帷幕墙施工技术的探索

Exploration of Water-stop Curtain Wall for Deep Foundation Pit in Complex Conditions

摘要:

河南省建行本部综合楼基坑止水帷幕墙设计深度为自然地面下34.6m，周边环境及地质条件复杂。在综合分析各种工艺基础上，探索采用多种施工方法，基坑东西南3侧采用三轴搅拌水泥土桩止水帷幕墙，北侧采用高压旋喷止水帷幕墙，能够克服场地狭小、地质条件和周围环境复杂等不利因素，取得了较好的止水效果。

Abstract:

The design depth of water-stop curtain wall was 34.6m under natural ground with complex surrounding environment and geological conditions. Based on the comprehensive analysis, various construction processes were explored. Three axis mixing cement pile water-stop curtain wall were constructed on the east, west and south sides and high rotary jet grouting water-stop curtain wall was used on north side. The unfavorable factors of narrow site, complex geological conditions and environment were overcome with good water-stop effect.