PVF_2膜传感器在模型桩动测系统中的应用(英文)  

Application of PVF_2 Film Sensor on Dynamic Measurement System of a Model Pile

作　　者：苏卫国[1] 

机构地区：[1]华南理工大学交通学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2002年第1期1-5,共5页Journal of South China University of Technology(Natural Science Edition)

摘　　要：建立了一套高精度的模型桩动测系统 ,首次采用新型聚偏二氟乙烯 (PVF2 )薄膜压电式传感器及光栅位移传感器分别测试桩端力和位移 .该系统可以同时获得模型桩在轴向冲击力作用下 ,桩端力和位移、桩顶力和加速度 4组信号 .经验证 ,由PVF2 膜传感器获得的值与计算值吻合较好 .In this paper, a highly accurate system for dynamic measurement of model pile was installed. A new type of force transducer-piezoelectric polyvinylidence fluoride (PVF 2) film and a grating displacement sensor were used to measure the force and displacement at the pile toe respectively for the first time. The system can be used to synchronously measure 4 signals, i.e., the force and displacement at the pile toe as well as the force and acceleration at the head of pile when the pile is subjected to an axial impact load. It is verified that the signals from the transducers is well coincident with the calculated solutions. The system would be an ideal one to study multi_parameter dynamic measurement of model pile by stress wave theory and the resistance model of the pile toe.

关 键 词：PVF2膜传感器 动测 聚偏二氟乙烯膜传感器 模型桩 桩端阻力 位移 桩顶力 加速度 

分 类 号：TU453[建筑科学—岩土工程] TP212.1[建筑科学—土工工程]