Geosynthetics are widely used in soil reinforcement engineering, the failure modes of which are typically pullout modes. However, current research on monitoring the pullout damage experienced by reinforced soil is limited. Accordingly, in this study, the stress variation laws and signal output characteristics of a sensor-enabled piezoelectric geobelt (SPGB) that can capture the tensile vibration signals of reinforced soil under various tensile failure conditions were examined. It was found that the SPGB captured the response signals under different soil environments, confining pressures, and shear rates. During the pullout friction process, a spike was generated, and the displacement corresponding to the position of the spike increased with an increase of the pullout friction rate. In the clay environment, the spike voltage was related to the confining pressure, while in the sand environment, there was no obvious relationship between the spike voltage and the confining pressure. In the gravel environment, the output voltage of the SPGB fluctuated greatly, due to the embedment of gravel particles, and many negative voltages of large amplitude appeared. The results of this study verify the promising application potential of SPGBs for the integration of soil reinforcement and monitoring, which is significant for further applications of SPGBs in engineering.

中文翻译：

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传感器驱动的压电土工带加固土壤拉拔摩擦信号的响应

土工合成材料广泛应用于土壤加固工程中，其破坏模式典型为拉拔模式。然而，目前监测加筋土拉拔损伤的研究还很有限。因此，在本研究中，研究了可捕获加筋土在各种拉伸破坏条件下的拉伸振动信号的传感器压电土工带（SPGB）的应力变化规律和信号输出特性。结果发现，SPGB 捕获了不同土壤环境、围压和剪切速率下的响应信号。在拉拔摩擦过程中，会产生尖峰，尖峰位置对应的位移随着拉拔摩擦速率的增大而增大。在粘土环境中，尖峰电压与围压有关，而在砂土环境中，尖峰电压与围压没有明显的关系。在砾石环境下，由于砾石颗粒的嵌入，SPGB的输出电压波动较大，出现了许多大幅度的负电压。本研究结果验证了SPGB在土壤加固和监测一体化方面的良好应用潜力，这对于SPGB在工程中的进一步应用具有重要意义。