带翼缘剪力墙有效翼缘宽度的解析解与简化公式

发布时间：2018-01-10 00:05

本文关键词：带翼缘剪力墙有效翼缘宽度的解析解与简化公式　出处：《哈尔滨工程大学学报》2017年03期 　论文类型：期刊论文

【摘要】：为了研究高层建筑结构中带翼缘剪力墙有效翼缘宽度的取值,本文基于能量变分原理,推导了剪力墙翼缘截面正应力的解析表达式,并依据应力等效原则计算了弹性阶段有效翼缘宽度的解析解。采用有限元方法对一组T形截面剪力墙进行了参数化分析,描述了有效翼缘宽度随加载过程的变化规律。通过引入无量纲剪滞系数β定量描述了剪滞效应随不同设计参数的变化规律。根据有限元计算结果,拟合出了不同受力阶段剪滞系数的经验计算式,考虑边界条件的约束构造出了描述正应力分布的曲线函数,进而推导出不同受力阶段有效翼缘宽的简化计算公式。通过与有限元计算结果的比对验证了简化公式的准确性,为工程设计提供参考。
[Abstract]:In order to study on the value of the high-rise building structure with the effective flange width of flange of shear wall, this paper based on the energy variation principle, analytical expressions are derived of shear wall flange section normal stress, and on the basis of the principles of stress equivalence calculation analysis of effective flange width of the elastic solution. By using the finite element method of a group T shaped cross section shear wall of parametric analysis, describes the variation of the effective width of flange with loading process. By introducing dimensionless shear lag coefficient quantitatively describes the variation of the shear lag effect with different design parameters. According to the results of finite element calculation, fitting different shear lag coefficient stage experience formula of constraint structure considering the boundary conditions that describe the normal stress distribution curve function, then deduces the simplified calculation formula of different stress phases of effective flange width. And through the finite element calculation results than The accuracy of the simplified formula is verified, and the reference for engineering design is provided.

【作者单位】：西安建筑科技大学土木工程学院;中色科技股份有限公司苏州分公司;
【基金】：国家自然科学基金项目(51478382,51608434)
【分类号】：TU398.2
【正文快照】： 网络出版地址:http://www.cnki.net/kcms/detail/23.1390.u.20170111.1509.012.html结构布置时,矩形墙肢通常被组合成了箱形、T形、工字形等带翼缘剪力墙形式。而这类构件在受横向荷载作用时,由于受到翼缘剪切变形影响,翼缘端部的正应力势必小于翼缘与腹板交界处,产生剪力滞后

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