摘要
预应力混凝土管桩应用普遍,质量检测内容为完整性与承载力。低应变法作为检测桩身完整性的普查方法,有高效、检测周期短的优点,但是低应变法无法对竖向裂缝有效的识别,对工程是一种极大的质量隐患。因此本文探讨了低应变法的局限性与孔内摄像技术的优点,将两种方法进行对比与结合,提出了在已知低应变法判定结果的前提下,采用孔内摄像技术进一步确定桩身综合完整性类别的方法。对桩身竖向裂缝排查检和检测提供了保障。
The application of prestressed concrete pipe piles is widespread,and the quality inspection content includes integrity and bearing capacity.The low strain method,as a survey method for detecting the integrity of pile bodies,has the advantages of high efficiency and short detection period.However,the low strain method cannot effectively identify vertical cracks,which is a great quality hazard to engineering.Therefore,this article explores the limitations of the low strain method and the advantages of borehole imaging technology.By comparing and combining the two methods,a method is proposed to further determine the comprehensive integrity category of the pile body using borehole imaging technology,given the known results of the low strain method.It provides assurance for the inspection and detection of vertical cracks in the pile body.
作者
刘洋洋
LIU Yangyang(Shenzhen Gangjia Engineering Test&Inspection Co.,Ltd.)
出处
《广东建材》
2024年第8期75-77,共3页
Guangdong Building Materials
关键词
预应力混凝土管桩
桩身完整性
孔内摄像
竖向裂缝
局限性
Prestressed concrete pipe piles
Integrity of pile body
Camera through the hole
Vertical cracks
limitations
作者简介
刘洋洋(1994-),男,本科,土木工程,主要从事地基基础工程质量检测工作.
