基于阵列式位移计的钢管桩基模型试验研究  

Model Test Study on Steel Pipe Pile Foundation Based on Shape Acceleration Array

作　　者：张炎飞 高建财 张苇[1] 杜湧[1] 白晓红[1] 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024

出　　处：《中北大学学报（自然科学版）》2017年第4期452-457,465,共7页Journal of North University of China(Natural Science Edition)

基　　金：山西省"百人计划"项目(800101-02030017);131人才专项经费(900198-02010018);山西省研究生教育创新项目(2017SY024)

摘　　要：阵列式位移计(SAA)是由包含微电子机械系统的加速度计的若干段连续体组成的.具有精度高、自动实时采集、可重复利用等特点.介绍了SAA测试原理及其首次在桩基础模型试验中的应用,试验中考虑了3个侧向荷载作用角度和3个长径比,研究了不同工况下桩基础模型在侧向荷载作用下的承载特性,分析了长径比和荷载作用角度的影响.试验结果表明,SAA可监测记录桩体的实时位移;长径比越大,极限承载力越高;荷载作用方向越接近于水平方向,极限承载力越高.The shape acceleration array （SAA） is composed of a continuum of segments of an aeeelerometer comprising a micro-electro-mechanical system with high precision, automatic real-time acquisition, reusable and so on. The principle of SAA and its application in pile foundation model test for the first time was introduced. Three different aspect ratios and three different loading inclination angles were considered in the tests. Lateral load behavior under lateral load and the effeet of aspect ratio and loading inclination angle were studied. The test results show that SAA can easily and visually monitor and re cord the displacement of pile under different lateral loads; the bearing capacity can be improved signifi- cantly by increasing the aspect ratio. The more nearly horizontal the loading direetion, the greater the bearing capacity of the steel pipe pile foundation is.

关 键 词：阵列式位移计 钢管桩基础 模型试验 位移 转角 承载能力 

分 类 号：TU473.1[建筑科学—结构工程]