摘要
为了解决深厚软土地层条件下高速铁路地基沉降控制的问题,对现行软土地基的沉降计算方法、加固措施和地基沉降计算深度进行了探讨,并以具体工点为例,分析高速铁路深厚软土地基中不同加固措施的优缺点。研究表明,一般的散体桩和水泥搅拌桩无法满足工点需求;CFG桩帽网结构工后沉降量为54 mm,桩板结构的工后沉降量为11 mm(工后沉降量控制值为15 mm)。从而确定了桩板结构的地基加固方案。
In order to solve the problem of settlement control of high-speed railway foundation under the condition of deep soft soil layer,this paper discusses the settlement calculation method,reinforcement measures and calculation depth of foundation settlement of the current soft soil foundation,and analyzes the advantages and disadvantages of different reinforcement measures in the deep soft soil foundation of high-speed railway by taking specific work sites as examples.The research shows that the granular pile and cement mixing pile can not meet the demand of the work site;The post-construction settlement amount of CFG pile cap net structure is 54 mm,and the post-construction settlement amount of pile plate structure is 11 mm(the control value of post-construction settlement amount is 15 mm).Thus,the foundation reinforcement scheme of pile slab structure is determined.
作者
周凯
Zhou Kai(China Railway Liuyuan Group Co.,Ltd,Tianjin 300308,China)
出处
《铁道勘察》
2019年第6期36-40,共5页
Railway Investigation and Surveying
关键词
桩板结构
路基
软土地基
高速铁路
pile plate structure
Subgrade
Soft soil foundation
High speed railway