桩基质量无损检验新法——水电效应法

• 作 者: 李达祥
• 机 构: 西安公路研究所地基基础研究室,
• 出 处: 公路
• 发表日期: 1988年03期
• 关键词: 无损检验 桩基质量 钻孔桩 钻孔取芯法 静载试验 主要型 欧州 建筑物基础 损坏率 桩基础

一、前言钻孔桩已成为我国桥梁和其它建筑物基础工程的主要型式,在欧州已占全部桩数量的70%。钻孔桩在施工时所引起的缺陷,对桩的功能有很大影响。据国外统计,钻孔桩损坏率为5～10%。国内初步统计为2%～21%。使用静载试验法和钻孔取芯法去检验桩的承载力和完整性是既昂贵又费时,还不能普检。先进的桩质量无损检验技术已在国内外

I. INTRODUCTION Bored pile has become the main type of basic engineering of bridges and other buildings in China, accounting for 70% of the total number of piles in Europe. Bored piles in the construction of the defects caused by the function of the pile has a great impact. According to foreign statistics, the damage rate of bored piles is 5 ~ 10%. The initial statistics of 2% ~ 21%. It is not only expensive but also time-consuming to test the bearing capacity and integrity of the pile by static load test method and drilling coring method. Advanced pile quality nondestructive testing technology has been at home and abroad