软土地基综合管廊不均匀沉降计算与处理

Calculation and Design for Uneven Settlement of Utility Tunnel on Soft Foundation

采用复合土层的压缩模型,利用盈建科软件按修正的分层总和法计算综合管廊沉降,为今后软土地基综合管廊不均匀沉降设计提供一种客观、可行、高效的方法。通过标准段与紧邻的通风口进行沉降计算、分析、比较,从防水材料失效的角度,提出了综合管廊的变形允许值。本文通过设计、工程经验总结,提出了防沉降措施,为今后综合管廊设计提供借鉴。

Compression model of composite soil layer was adpoted to calculate the settlement of utility tunnel according to the modified layered summation method by using YJK building software, which could provide an objective, feasible and efficient method for the design of uneven settlement of utility tunnel on soft soil foundation. Based on the settlement calculation and the failure of waterproof materials, analysis and comparison between the standard segment and the air vent, the allowable deformation value of the utility tunnel was proposed. And some anti-settlement measures were gained based on the summary of design and engineering experience, which should provide a reference for design and construction of the similar utility tunnel in the future.