湿陷性黄土地区桥梁桩基础承载力分析

Research on Bearing Capacity of Bridge Pile Foundation in Collapsible Loess Region

基于高速公路湿陷性黄土地区桥梁施工实践,分析了湿陷性黄土桩基侧向负摩阻力与桩侧阻力对桩基承载力的影响,提出了桥梁单桩竖向极限承载力和桩身强度的计算方法。通过在桥梁承台和桩基土壤内设置监测点,对桩基承载力与土壤含水量进行监测,收集和整理监测数据,绘制监测曲线,说明桩基承载力符合设计要求。

Based on the practice of bridge construction in highway collapsible loess region,the effect of lateral negative friction and lateral resistance on bearing capacity of collapsible loess pile foundation was analyzed,and the calculation method of vertical ultimate bearing capacity and pile strength of single pile in bridge was put forward.By setting up monitoring points in the bridge cap and pile soil,the bearing capacity of pile foundation and soil water content were monitored,the monitoring data were collected and sorted out,and the monitoring curve was drawn.The results showed that the bearing capacity of pile foundation met the design requirements.