沿海地区铁路桥梁钢板桩围堰设计浅析

Simple Analysis of the Steel Sheet Pile Cofferdam in Coastal Areas

对于软土基坑防护设计,目前铁路部门没有明确的技术标准。论文参照《建筑基坑支护技术规程》,以连盐铁路跨S242、烧香河支流特大桥14#墩为例,介绍了沿海地区软弱土层中铁路桥梁钢板桩围堰的设计计算方法,阐述了设计过程中对钢板桩围堰的各项验算内容。结合已经实施的工程实例,根据封底混凝土以下地基的基本承载力对沿海地区铁路桥梁钢板桩围堰设计中钢板桩长度取值进行总结,对以后类似工程的设计有一定的借鉴和指导的作用。

Currently,for the design of soft soil foundation pit protection,there is no clear technical standards published by the railway sector.With reference to The Construction of foundation pit supporting technology procedures,This article will take the bridge pier 14 as an example,which across S242,Shao Xiang river tributary in the lianyan railway,to introduce the design calculation methods of bridge steel sheet pile cofferdam in the coastal areas or soft soil railway,and describes the design process for checking the contents of the steel sheet pile cofferdam.Finally,combined with the project had been implemented,and according to the basic foundation bearing capacity make a summarization about the length of steel sheet pile during the design of steel sheet pile cofferdam at the coastal railway bridge,in the future,these results have reference and guidance for the design of similar projects.