软土地区250 km/h箱梁存梁台座设计方案研究  

Research on design scheme of 250 km/h box girder pedestal in soft soil area

作　　者：王金香 Wang Jinxiang(China Railway Liuyuan Group Co.,Ltd.,Tianjin 300308,China)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300308

出　　处：《山西建筑》2021年第2期81-82,90,共3页Shanxi Architecture

摘　　要：盐通铁路南通西至张家港段张家港存梁场为软土路基工点,该梁场位于长江南岸,区域河网纵横,水系发达,场区地质属于软弱富水地层,在最优的梁场平面布置形式下,并保证梁场安全适用、经济合理,选择恰当的地基处理措施以满足承载力和沉降控制的要求则成为该工程的重点及难点。通过对双层900 t的箱梁存梁台座地基处理方案比选及论证,在软土地区采用预应力管桩加固措施施工效率高、处理效果好且较为经济,并得到了良好实施效果,可为类似工程提供参照和借鉴。Located on the South Bank of the Yangtze River,the beam storage yard of the west section of the Nantong to Zhangjiagang section of the Yantong railway is located in the soft soil roadbed,it is important and difficult to choose proper foundation treatment measures to meet the requirements of bearing capacity and settlement control.In this paper,through the comparison,selection and demonstration of the foundation treatment schemes of the double-deck 900 t box beam storage platform,the construction efficiency is high,the treatment effect is good and it is economical to adopt the prestressed pipe pile reinforcement measures in the soft soil area,and the good implementation effect is obtained,it can provide reference and reference for similar projects.

关 键 词：存梁台座 地基处理 预应力管桩 CFG桩 

分 类 号：U445.55[建筑科学—桥梁与隧道工程]