不良地质电力箱涵原位保护地下连续墙施工技术研究  

Research on Construction Technology of Underground Continuous Wall for In-situ Protection of Power Box Culvert in Unfavorable Geology

作　　者：李广明 LI Guangming(China Railway 22nd Bureau Group Second Engineering Co.,Ltd.,Beijing 100144,China)

机构地区：[1]中铁二十二局集团第二工程有限公司,北京100144

出　　处：《工程技术研究》2024年第22期70-72,共3页Engineering and Technological Research

摘　　要：文章以天津地铁8号线绿水公园站施工为背景,研究地下连续墙在不良地质、大型电力箱涵横穿地铁车站环境下的施工技术。通过增加钢板桩支护、应用超深“][”形导墙等措施消除杂填土层不良地质影响;应用绞吸式施工工艺进行箱涵原位悬吊保护,保证箱涵横穿车站工况下地下连续墙的施工质量。工程实践证明,该施工技术成熟可行,可为后续同类型的地铁车站施工提供技术依据。Based on the construction of Lvshui Park Station on Tianjin Metro Line 8,this paper studies the construction technology of underground continuous wall in the environment of unfavorable geology and large power box culvert crossing subway station.By increasing the steel sheet pile support,applying ultra-deep"]["-shaped guide wall and other measures,the infl uence of the unfavorable geology of miscellaneous fi ll layer is eliminated;and the cutter suction type construction technology is applied to conduct in-situ suspension protection of the box culvert,ensuring the construction quality of the underground continuous wall under the condition of the box culvert crossing the station.The engineering practice proves that the construction technology is mature and feasible,which can provide technical basis for the subsequent construction of the same type of subway station.

关 键 词：电力箱涵 地下连续墙 原位保护 绞吸式 

分 类 号：TU994[建筑科学—市政工程]