适应软土地基的港口铁路路基方案优化

Optimum Design of Port Railway Subgrade Applying to Soft Base

利用软土吹填造陆形成的港区,地基基底承载力通常较差,对铁路路基的设计要求较高。结合港口铁路货运虽然重载、但是多为尽端线路,或装卸线居多,运行速度较低等特点,以黄骅港某铁路路基工程为例,结合目前软土地基上路基设计基本方案,提出改进的路基设计方案。通过技术经济分析,优化改进适应港口软土地基、技术上满足承载力要求,经济上更合理的铁路路基结构形式,并在工程中应用。

Being restricted by the dredger-filled soft base with poor bearing capacity,higher requirements is made for the design of port railway subgrade.Though port railways serve heavy-load freight,most of them belong to end line or loading&unloading line,are characterized with low running speed.Based on a railway subgrade works in Huanghua Port,the basic design plan of soft-base subgrade is improved and analyzed from the aspects of technology and economy,which leads to the optimized port railway subgrade that adapts to soft base,meets the bearing capacity requirements,and is more economical as well.The research results will be applied in similar projects.