薄膜式土压力分布传感器研发及试验研究  

Experimental Research and Development of Thin-Film Soil Pressure Distribution Sensor

作　　者：廖波[1,2] 周檀君[2] 季雨坤 LIAO Bo;ZHOU Tanjun;JI Yukun(National Demonstration Center for Liberal Arts, Zhejiang Gongshang University, Hangzhou 310018, China;State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology ,Xuzhou Jiangsu 221008,China)

机构地区：[1]浙江工商大学国家级文科综合实验教学示范中心,杭州310018 [2]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008

出　　处：《传感技术学报》2018年第1期19-24,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目(51404210);博士后科学基金项目(2014M551698);深部岩土力学与国家重点实验室开放基金项目(SKLGDUEK1412)

摘　　要：在岩土力学与工程领域,随着对土压力荷载大小与分布研究的深入,新型土压力传感器的研发愈显重要。本文利用导电敏感复合材料研制了一种新型薄膜式土压力分布传感器,其总厚度小于0.2 mm。首先介绍了传感器的设计原理及结构,初步测试结果表明,双层结构传感器的灵敏度相对更高。然后,通过大型模型试验实测检验了研发的双层结构土压力分布传感器的基本性能。新型传感器具有测点面积小(可实现大密度测试)、T/D小(对土体扰动小)、引线方便以及弯曲挠度大(适合弯曲表面压力测试)等特点。综合来看,它用于土压力分布测试初步是可行的,具有进一步深入研究的价值。With the advances in the Geotechnical mechanics and Engineering,the research and development on new earth pressure sensors are becoming more and more important. The current study developed a thin-film soil pressure distribution test sensor-overall thickness was less than 0. 2 mm,by composite materials. The study introduced the structure and mechanism of the sensor and conducted a pretest on its sensitivity. It was shown that double-layer structure sensor had higher sensitivity. Moreover,the basic performances of the sensor were tested through largescale model experiment,which demonstrated that the sensor was reliable. The thin-film sensors can be applied into soil pressure cell as its advantages include the smaller size（ large density test）,the smaller T/D（ less disturbance to soil）,convenient wire layout and large deflection bending（ suitable for curved surface） and the like.

关 键 词：导电复合材料 土压力测试 土压力分布 薄膜式 模型试验 

分 类 号：TU443[建筑科学—岩土工程]