双层钢套管试桩施工关键技术

Key Technology for Double Steel Casing Test Pile Construction

对双层钢套管试桩施工技术进行了介绍。双层钢套管通过隔离桩顶设计标高以上的桩身与土体的接触,达到直接测试有效桩长范围的桩基承载力的目的,克服了传统试桩技术获得的桩基承载力精确性不足的缺点。结合工程实际,对双层钢套管试桩的静载试验情况进行了介绍,并分析了其技术优势,以期为类似工程提供借鉴。

This paper introduces the construction technology of double steel casing test pile. By isolating the contact between the pile body and the soil above the design elevation of the pile top, the double-layer steel casing can directly test the bearing capacity of the pile within the range of effective pile length, which overcomes the shortcomings of the traditional pile testing technology. Combined with the engineering practice, this paper introduces the static load test of double-layer steel casing test pile, and analyzes its technical advantages, so as to provide reference for similar projects.