淤泥地层区间基坑开挖对邻近风险源的影响研究  

STUDY ON THE IMPACT OF FOUNDATION PIT EXCAVATION IN THE SILT STRATUM SECTION ON ADJACENT HAZARD SOURCES

作　　者：陈艳[1] CHEN Yan(China Railway 18th Bureau Group Fifth Engineering Co.,Ltd.,300459,Tianjin,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300459

出　　处：《建筑技术》2024年第10期1181-1184,共4页Architecture Technology

摘　　要：某城市新建明挖区间地质条件差,基坑深度范围内基本为填土及淤泥底层;周边风险源很多,邻近既有轨道交通线路、高架桥梁桩基等;结构设计复杂,明挖区间本身与其围护结构采用叠合墙,基础形式不一。采用GTSNX岩土数值模拟软件,建立三维数值模型,结合施工方案,模拟基坑开挖过程,并分析其周边风险源的位移变化规律,为施工风险的控制提供了一定的依据,可为类似工程施工提供一定的借鉴。A new open-cut section in a city involves poor geological conditions and the fill and silt bottom mostly within the foundation pit depth.There are also many hazard sources around,such as pile foundations of existing rail transit lines and viaducts.The structural design is complex,in which the open-cut section and its enclosure include superimposed walls with different types of foundation.With the GTSNX geotechnical numerical simulation software,a 3D numerical model was established,and the process of foundation pit excavation was simulated in line with the construction scheme.Furthermore,the rules of displacement changes of surrounding hazard sources were analyzed.This study provides a basis for construction risk control and a reference for the construction of similar projects.

关 键 词：淤泥地层 基坑研究 数值模拟 

分 类 号：TU74[建筑科学—建筑技术科学]