摘要
Abstract
In highway engineering,the insufficient bearing capacity of structure base is a problem often encountered in on-site construction.The replacement method is often used in actual field production,but the replacement depth is often based on experience,and there is not a unified and simple method to determine the replacement depth.In this paper,based on the HPDS pavement calculation software,the replacement material is regarded as a kind of pavement structure layer.Taking the Pingzhao highway project as an example,under the same equivalent axial load,the resilient modulus of the top surface of the roadbed is determined,and a certain replacement depth is assumed to calculate whether the design deflection and allowable tensile stress meet the load requirements,the thickness calculated with the roadbed load working area and the thickness calculated by the eigenvalue method of foundation bearing capacity.Compared with the three,it is concluded that the replacement thickness calculated by HPDS program is not much different from other methods in numerical value,which provides a fast and simple method for engineering practice,provides reference for other projects and can be widely used.关键词
HPDS/路面软件/构造物/换填深度/承载力Key words
HPDS/pavement software/structure/replacement depth/insufficient bearing capacity分类
交通工程
