高应变动力测试技术在大直径钻孔灌注桩检测中的应用  

Application of high strain dynamic testing technology in thedetecting of the big diameter bored cast-in-place piles

作　　者：苏沛东 慕红勋 张晓炜 

机构地区：[1]河南省交通规划勘察设计院,河南郑州450052 [2]河南省交通厅公路管理局,河南郑州450052

出　　处：《河南科学》2004年第4期533-535,共3页Henan Science

摘　　要：高应变动力测试技术是近年来国内外迅速发展并推广使用的一种桩基检测方法。本文通过郑州市G107-金水东路互通式立交桥2根大直径钻孔灌注桩桩身质量高应变检测,简要阐述了高应变动测技术的工作机理和测试分析要点,并就其完整性检测结果与传统的埋管超声透射法进行了试验对比。从方法的采用、测试的效果以及测试的精度等方面论证了高应变动测技术检测大直径钻孔灌注桩的可行性,以期为设计、施工和工程监理提供必要的技术参数和工作依据。The technology of high strain dynamic testing has been used and extended years in our country. In this paper, with the Application of the two big diameters bored cast-in-place piles in the interchange of Jinshui Dong Road, the working mechanism and the analysis main points about the technology of high strain dynamic testing are narrated briefly. According to the intact testing results, the traditional embedding pipe ultrasonic transmission technique and this technology are compared. From the adopting method, the testing effects, and the testing precision, the feasibility of the technology of high strain dynamic testing is demonstrated. The technical parameters and the working accordance can be provided for the designing construction and the supervision.

关 键 词：大直径钻孔灌注桩 单桩极限承载力 桩身结构完整性 高应变动力测试 一维波动方程 实测曲线拟合法 

分 类 号：TU317[建筑科学—结构工程]