内容简介
DB/T 29-112-2021 备案号∶ J10497-2021天津市钻孔灌注桩成孔、地下连续墙成槽检测技术规程
Technical specification for the testing of the drilling hole of cast-in-place pile and the groove of diaphragm wall in Tianjin
2021-11-01 实施
2021-09-22 发布
目 次
1 总 则.......................................................................................... 1
2 术语和符号.................................................................................. 2
2.1 术 语................................................................................... 2
2.2 符 号................................................................................... 5
3 基本规定...................................................................................... 6
3.1 仪器设备................................................................................6
3.2 检测方法................................................................................6
3.3 检测数量................................................................................8
3.4 检测位置确定.........................................................................8
3.5 检测前准备............................................................................ 9
3.6 重复检测与扩大检测.............................................................. 9
3.7 检测结果评价.......................................................................10
4 超声波法.................................................................................... 11
4.1 一般规定..............................................................................11
4.2 检测仪器设备.......................................................................11
4.3 仪器自校..............................................................................12
4.4 钻孔灌注桩成孔检测............................................................ 12
4.5 地下连续墙成槽检测............................................................ 13
4.6 检测数据处理.......................................................................13
5 接触式仪器法............................................................................18
5.1 一般规定..............................................................................18
5.2 检测仪器设备.......................................................................18
5.3 钻孔灌注桩成孔孔径检测..................................................... 20
5.4 钻孔灌注桩成孔垂直度检测..................................................22
5.5 沉渣厚度检测.......................................................................24
5.6 孔深检测..............................................................................25
6 检测报告.................................................................................... 27
附录 A 伞形孔径仪标定方法...................................................... 29
附录 B 顶角测量法测斜仪标定方法..........................................31
本规程用词说明..............................................................................32
引用标准名录..................................................................................33
条文说明.......................................................................................... 34