软土复杂环境条件某主变电站深基坑设计

DEEP EXCAVATION DESIGN OF A MAIN SUBSTATION UNDER COMPLEX ENVIRONMENT IN SOFT SOIL AREA

上海属于典型的软土地区,淤泥质土层厚且具有高含水量、高压缩性、高灵敏度、低强度等特征,对基坑工程影响较大。文中以上海轨道交通14号线某地铁站110kV主变电站项目深基坑工程为背景,介绍了复杂环境条件下的深基坑设计方案,阐明了软土地区复杂环境条件下深基坑工程的设计思路和需注意的要点。分析现场监测数据结果表明,工程实施效果良好,取得了良好的社会效益,可为类似工程设计提供一些实践经验。

Shanghai is a typical soft soil area.The thick muddy soil layer has the characteristics of high water content,high compressibility,high sensitivity,and low strength,which has great influence on foundation pit engineering.Based on the deep foundation pit engineering of 110 kV main substation project of a subway station on Shanghai Rail Transit Line 14,this paper introduces the design scheme of deep foundation pit under complex environmental conditions,and expounds the design ideas and key points of deep foundation pit engineering under complex environmental conditions in soft soil area.The monitoring results show that the project has good implementation effect and achieves good social benefits,which can provide some practical experience for similar engineering design.