高速公路软基路堤沉降速率控制

On the Control of Settlement Velocity of Expressway Soft Subgrade

文章基于实测沉降时间过程的双曲线模式和一维太沙基固结理论,推导了在等载条件下的沉降速率计算式,提出了高速公路路基预压期沉降速率控制标准。在此基础上,讨论了超载条件下,沉降速率控制标准的修正,并给出了沉降速率放大系数。

This paper,based on the double-curve model in the process of actual settlement veloci-ty by measurement and the one-dimension Terzaghi consolidation theory,induces the formula of settlement velocity under the conditions of equal loads and presents settlement velocity control standards for the pre-pressure stage of expressway subgrade.And also the paper discusses the modification of settlement velocity control standards under the conditions of overload and sets forth the enlarging co-efficient of settlement velocity.