高速列车轨道梁桩基础的变位控制  

The Displacement Control of Pile Foundation Design in the Construction of Hing Speed Railway Line

作　　者：高大铭[1] 

机构地区：[1]上海市政工程设计研究总院,上海200092

出　　处：《工程勘察》2006年第7期39-42,共4页Geotechnical Investigation & Surveying

摘　　要：在软土地区建设高速列车运行线,桩基础变位是控制设计的重要因素,而竖向变位则是以控制沉降量和不均匀沉降为主。为此,岩土工程勘察报告将全线划分为11个地质区段,对各区段选择桩端持力层和桩型,预估了单桩承载力和桩基础的沉降量,提供设计所需的各项参数,并对土的均匀性进行了分析。两年半的沉降观测成果表明,沉降量和沉降差都明显小于允许值。这一经验对于在软土地区建设高速铁路有一定的参考价值。The displacement control is an important factor of pile foundation design in the construction of high speed railway line on soft clay ground, and vertical displacement control is including the settlement and the difference in settlement. So, the engineering field of high speed railway line was split into eleven sub-areas in the report of investigation of engineering. For each sub-area, pile bearing layers and pile types were analyzed and suggested, and the single pile bearing capacity and the settlement of pile foundation were predicted. The uniformity of the soil was analyzed, and parameters of design were also suggested. According to the observation data obtained in last two and a half years, the values of the settlement and the difference in settlement are considerably less than that allowed. The experience of the paper offers the reference for the construction of high speed railway line on soft clay ground.

关 键 词：桩基持力层 变位控制 沉降差 

分 类 号：TU473.1[建筑科学—结构工程]