摘要
通过对某灌注桩旧桥下部承重结构进行静载试验研究,为合理利用该桥下部结构提供科学依据.研究表明:试验桥墩在各级荷载下,沉降稳定,卸载后恢复良好,在整个试验过程中处于弹性工作状态,试验桥墩的承载能力基本满足公路II级的设计要求;盖梁抗弯承载能力储备相对不足,抗剪承载能力不满足规范要求,建议对盖梁进行结构加固.
The article combines practice project of certain cast-in-place pile bridge,through analyzing the static load test of understructure,and supplying scientific foundation for reasonable utilization of the old bridge.The research indicate that bridge pier has stable sedimentation,and fine recovery after unloading,the structure has the elastic state in the whole process,and the bridge pier basically meet the car-20 requirement,the coping appear many crack in the static load test,it has the deficiency bending load-carrying capacity.At the same time,the coping has bigger principal tensile stress,and the load-carrying capacity of the shear cannot meet the challenge the code,so we should strengthen the coping.
出处
《河南科学》
2009年第4期465-468,共4页
Henan Science
关键词
灌注桩
静载试验
承载力
the cast-in-place pile
static load test
load-carrying capacity
