基于冲击回波法的预应力管道压浆密实性检测

渠广镇, 周广利, 张科超, 王彦伟

The detection of grouting compactness of pre-stressed ducts based on the impact-echo method

Guang-Zhen QU, Guang-Li ZHOU, Ke-Chao ZHANG, Yan-Wei WANG

表2 各缺陷类型结果汇总

Table 2 Summary results for each defect type

工况类型 顶部反射时刻 t1/ms 底部反射时刻 t2/ms d/cm D/cm D中和密实 管道差率 1 密实 0.094 0.116 8.3 20.4 / 2 顶板半空 0.096 0.121 8.5 21.4 4.9% 3 全空 0.100 0.123 8.8 21.7 6.4% 4 腹板半空 0.104 0.125 9.7 23.5 15.2%