框架填充墙等效单杆斜撑简化模型

发布时间：2018-04-19 09:34

本文选题：填充墙 + 框架结构　；参考：《中南大学学报(自然科学版)》2017年02期

【摘要】：在已有的填充墙等效对角斜撑模型的基础上,结合近年来地震现场普遍出现的填充墙顶部与框架梁柱节点接触处的砖砌体在大震作用下通常会被压碎这一实际震害现象,改变等效斜撑杆与框架柱的接触位置,提出一种新的简化计算模型。通过理论推导给出等效斜撑墙片宽度的计算公式,利用ABAQUS有限元模拟的方法,确定等效斜撑墙片与框架柱合理接触位置的经验计算公式。最后通过将简化有限元模型计算结果与试验结果进行对比,验证该简化建模方法的正确性。研究结果表明:传统的对角斜撑模型低估框架填充墙构件的水平承载力,新模型与芦山地震框架结构震害结果更相符。本模型可为框架结构抗震分析与设计验算提供参考意义。
[Abstract]:Based on the existing equivalent diagonal diagonal brace model of infilled wall, the brick masonry at the top of infilled wall and the joint of frame Liang Zhu is usually crushed under the action of earthquake in recent years.A new simplified calculation model is proposed by changing the contact position between the equivalent oblique brace and the frame column.Based on the theoretical derivation, the calculating formula of the width of the equivalent inclined braced wall is given, and the empirical formula of the reasonable contact position between the equivalent inclined braced wall and the frame column is determined by using the ABAQUS finite element simulation method.Finally, the correctness of the simplified modeling method is verified by comparing the calculated results of simplified finite element model with the experimental results.The results show that the traditional diagonal diagonal bracing model underestimates the horizontal bearing capacity of the frame infilled wall members, and the new model is more consistent with the seismic damage results of the Lushan seismic frame structure.This model can be used as a reference for seismic analysis and design checking of frame structures.
【作者单位】：哈尔滨工程大学航天与建筑工程学院;东北农业大学水利与土木工程学院;中国地震局工程力学研究所地震工程与工程振动重点实验室;
【基金】：国家自然科学基金资助项目(91315301) 地震行业科研专项(201508026-01,201508010-06)~~
【分类号】：TU375

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