拟静力试验中柱试件底座的设计与改进  

Design and improvement for the foundation of column specimen in the pseudo-static test

作　　者：殷晓三[1] 李济苠 YIN Xiaosan;LI Jimin(School of Architectural and Civil Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院建筑工程学院,河南郑州450007

出　　处：《中原工学院学报》2022年第4期49-56,共8页Journal of Zhongyuan University of Technology

基　　金：河南省高等学校重点科研项目(20A560025,22A560007);河南省交通运输厅科技计划项目(2020J-2-20);教育部产学合作协同育人项目(201901273059);中原工学院研究生教育质量提升工程项目(QY20206)。

摘　　要：在拟静力试验中,柱试件底座的几何尺寸通常是柱试件的几何尺寸的数倍,造成了大量的材料浪费,增加了试件安装难度。为了合理地设计柱试件底座,提高拟静力试验效率,对底座进行了分析和研究。首先,分析了底座受力形式,基于柱下独立基础理论,建立了底座设计方法。其次,采用建立的底座设计方法对应用实例进行了计算分析,结果表明底座实例配筋量较大,底座几何尺寸还可以进一步优化。最后,基于杯口基础理论,提出了底座设计的改进方法,减小了底座几何尺寸,降低了试件安装难度;并比较了反力横梁对柱试件的摩擦力和静力台座对底座的摩擦力,结果表明反力横梁对柱试件的摩擦力小于静力台座对底座的摩擦力,无需在底座两端设置限位设备。In the pseudo-static test,the geometrical size of the column specimen's foundation is usually several times larger than that of column,which causes vast material waste and increases the difficulty of specimen installation.For the sake of providing the reasonable design of the foundation and improving the efficiency of pseudo-static test,the foundation was analyzed and studied.Firstly,the loading form of the foundation was analyzed,and the design method was proposed based on the theory of the single foundation under column.Secondly,an application example is calculated and analyzed by the method of foundation design,and the results show that the reinforcement quantity of the foundation is large,and the geometric dimension of the foundation can be further optimized.Finally,an improved method for design of the foundation was presented based on the techniques of socket foundation,which can reduce the size of the foundation and the difficulty of specimen installation;The fiction force between the counter-force beam and the column specimen was compared with that between the foundation and the static pedestal,the result shows that the former is less than the latter,so it is not necessary to provide with setup for limiting displacing at both sides of the foundation.

关 键 词：拟静力试验 柱试件底座 独立基础 杯口基础 

分 类 号：TU31[建筑科学—结构工程]