管幕箱涵工法在节点交通改善中应用分析  

Application Analysis of Pipe Curtain Box Culvert Construction Method in Node Traffic Improvement

作　　者：郭雷 王小生 何莉 GUO Lei;WANG Xiao-sheng;HE Li(Shanghai Engineering Survey&Design Co.,Ltd.,Shanghai 200042,China;Shanghai Municipal Road Transport Administrative Bureau,Shanghai 200042,China)

机构地区：[1]上海工程勘察设计有限公司,上海200042 [2]上海市道路运输管理局,上海200042

出　　处：《中国市政工程》2021年第3期76-79,125,126,共6页China Municipal Engineering

摘　　要：分析节点交通改善实施难点。阐述管幕箱涵工法的特性及其适用性,指出该工法具有覆土浅、施工时地表变形量小、结构断面大、施工精度要求高等特点。以上海市松江区新车公路下穿民益路下立交为例,详细分析管幕箱涵施工对周边土体、现状电车桥的影响情况,以及结构本身的安全性。分析结果表明,在饱和软土地质条件下,管幕箱涵工法对周边土体扰动较小,结构安全性高,满足超浅覆土、大断面、不中断交通的要求,具有较好的实际应用价值。It analyzes the implementation difficulties of node traffic improvement;and expounds the characteristics&applicability of the pipe curtain box culvert construction method;and points out that the construction method has the characteristics of shallow soil cover,small surface deformation during construction,large structural section and high construction accuracy requirements.Taking Xinche Highway passing through Minyi Rd.lower interchange in Songjiang District of Shanghai as an example,it analyzes the influence of pipe curtain box culvert construction on surrounding soil,existing tram bridge,and the safety of the structure itself.The analysis results show that under the saturated soft soil geological conditions,the pipe curtain box culvert construction method has less disturbance to the surrounding soil,high structural safety,and meets the requirements of super-shallow overburden,large cross-section&no-traffic interruption,which has good practical application value.

关 键 词：交通改善 管幕 箱涵 下立交 大断面 超浅覆土 

分 类 号：U449.83[建筑科学—桥梁与隧道工程]