某工程基桩承载力自平衡测试法研究

A Case Study of Self-balancing Test Method for Bearing Capacity of Foundation Piles in a Certain Project

基桩承载力自平衡测试法由于其灵活性和可靠性,在大吨位桩基承载力检测试验中有着较大优势。文中从工程实例出发,试验前通过计算确定受检桩平衡点的具体位置,依据现场检测数据绘制Q-S曲线,计算出三根受检桩单桩抗压承载力均满足设计要求。试验难点在于桩身“平衡点”位置难以准确把控,而且试验对施工质量具有较为严格的要求。

The self balancing test method for pile bearing capacity has significant advantages in testing the bearing capacity of large tonnage pile foundations due to its flexibility and reliability.The article starts from an engineering example,determines the specific position of the balance point of the tested pile through calculation before the experiment,draws Q-S curves based on on-site inspection data,and calculates that the compressive bearing capacity of three tested piles meets the design requirements.The difficulty in the test process lies in the dificulty in accurately controlling the position of the"balance point"on the pile body,and the test has strict requirements for construction quality.