岩溶地质旋挖灌注桩成孔工艺及其基桩质量控制研究

Research on the Pore-forming Technology of Rotary Digging Cast-in-place Pile and Quality Control in Karst Area

针对岩溶区旋挖桩施工质量问题,改进复杂岩溶地质条件下旋挖成孔灌注桩的施工工艺,并结合岩溶发育场地的旋挖灌注桩施工实例,分析了不同旋挖成孔施工工艺下基桩质量的差异,揭示了影响岩溶地区旋挖灌注桩成桩质量的主要因素,并提出了旋挖桩在岩溶区提高成桩质量的有效措施。

With the existing construction quality problems of rotary digging pile in karst area, this paper aims to improve the construction technology of rotary digging cast-in-place pile in complex karst geological condition, and analyzes the differences quality in different pore-forming technology combined with the specific project of rotary digging cast-in-place pile construction in karst development area. This paper reveals the main factors which affect the quality of rotary digging cast-in-place pile, and proposes the effective measures to improve the quality of the rotary digging pile.