墩台开裂桥梁基桩承载力验算

Pier cracking bridge foundation pile bearing capacity checking calculation

以某铁路大桥墩台开裂工程为例,从堆碴内力、堆碴作用下及纵向地震作用下的基桩内力三方面,验算了墩台开裂桥梁基桩的承载力,结果表明基桩的应力均未超出规范允许值,并通过现场开挖验证了计算结果的准确性,说明了基桩无明显病害特征。

Taking the railway bridge pier cracking engineering as an example,starting from three aspects of muck bank internal-force,foundation pile internal force under the action of muck bank and vertical earthquake,the thesis checks and calculates the pier cracking bridge foundation pile bearing capacity. Results show that： the foundation pile stress doesn＇t go beyond the permitted value. Through in-situ excavation,it testifies the calculation results accurate,and illustrates the foundation pile health.