冲击回拨响应分析研究

On response analysis of impact-echo

通过测试板状结构上距板边缘不同距离的位置,分析了冲击回波在测试距离板边缘较近的部位时的准确性,并对比了板状结构与柱状结构以及密实混凝土板与含有孔洞的损伤混凝土板的回波响应的差异,指出冲击回波响应在测试距离板边缘小于板厚的位置时,测试结果会有偏差,相对靠近板中的位置的测试结果,会出现不稳定;不同结构的回波响应各有特点。

By measuring the locations of different distances at the upper plate edges at the plate structures,the paper analyzes the position of the impact-echo in the closer edge of the measurement plates,compares the differences between plate-shaped and column-shaped structure,and the impact-echoes of the compacted concrete plates and the ones with holes,and points out the result can be a little erroneous with the impact-echo response with distance edge is less than the plate thickness and the measurement will be unstable when it is relatively close to the plate center,and indicates the echo responses of various structures have their own characteristics.