Sensor-enabled piezoelectric geocables were combined with a geogrid to acquire a sensor-enabled piezoelectric geogrid (SPGG) based on the impedance–strain relationship. Tension, pullout, and straight shear tests were conducted on this SPGG configuration. The tension test results indicated that the tensile strain–normalized impedance curves were exponential in form within the first 7 % of strain and the rate of shift in impedance was independent of the tension loading rate. An excellent correspondence between the peak strength and impedance inflection point was observed in the results of the pullout and straight shear tests. Additional validation of the proposed SPGG was conducted through a collapse test of the reinforced soil slope model. The results indicated that the SPGG-obtained strains were similar to actual strain gauge measurements but provided a larger measurement range and that the SPGG was able to sense real-time vibrations during the slope collapse using a voltage analysis, confirming that the proposed SPGG can simultaneously provide soil reinforcement, strain monitoring of reinforcement materials, and vibration sensing. This research is expected to inform the development of a dynamic and static monitoring, large range, and accurate method for monitoring the conditions of reinforced soil over their entire lifecycles.

中文翻译：

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用于边坡修复和监测的传感器压电土工电缆-土工格栅复合结构的室内测试


将传感器驱动的压电土工电缆与土工格栅相结合，以获得基于阻抗-应变关系的传感器驱动的压电土工格栅 （SPGG）。对这种 SPGG 配置进行了拉伸、拉拔和直剪测试。拉伸试验结果表明，拉伸应变归一化阻抗曲线在应变的前 7% 内呈指数状，并且阻抗偏移率与拉伸加载率无关。在拉拔和直剪测试的结果中观察到峰值强度和阻抗拐点之间的极好对应。通过对加筋土边坡模型的坍塌测试，对拟议的 SPGG 进行了额外的验证。结果表明，SPGG 获得的应变与实际应变片测量相似，但提供了更大的测量范围，并且 SPGG 能够使用电压分析感知边坡坍塌过程中的实时振动，证实了所提出的 SPGG 可以同时提供土壤加固、加固材料的应变监测和振动传感。这项研究有望为开发一种动态和静态监测、大范围和准确的方法来监测钢筋土在整个生命周期内的状况。