摘要
针对途经山西湿陷性黄土地区的客运专线简支梁桥,选取了2种桩径及数量相同、布置形式不同的群桩基础进行了轴力及沉降监测,并与有限元结果进行了对比分析,分析结果表明3排桩基础较双排桩基础受力更为合理,且因为黄土湿陷性的影响,单纯的数值模拟并不能准确分析桩身轴力及沉降情况,需要考虑桩基础的负摩阻力。
Asimple supported bridge for passenger dedicated railw ay passes through collapsible loess area in Shanxiprovince. Two kinds of pile- group foundations with same pile diameter and number but different arrangement werechose for monitoring the axial force and settlement. T he monitored results were compared with those of the finiteelement method. The results show that three row piles foundation have a better force than two row piles foundation.Because of the collapsibility of loess, numerical simulation can not accurately analyze the axial force and settlement ofpile. The negative frictional resistance of pile foundation should be considered in calculation.
出处
《铁道建筑》
北大核心
2017年第8期86-88,共3页
Railway Engineering
关键词
桥梁基础
湿陷性黄土
现场试验
数值分析
轴力
沉降
Bridge subgrade
Collapsible loess
Field test
Numerical analysis
Axial force
Settlement
