[1]邓雪松,罗德章,周云,等.构造与设计参数对消能楼梯间减震性能的影响分析[J].地震工程与工程振动,2018,(02):001-9.[doi:10.13197/j.eeev.2018.02.1.dengxs.001]
 DENG Xuesong,LUO Dezhang,ZHOU Yun,et al.Analysis of energy dissipating performance of damped staircase with different constructions and design parameters[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2018,(02):001-9.[doi:10.13197/j.eeev.2018.02.1.dengxs.001]
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构造与设计参数对消能楼梯间减震性能的影响分析
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《地震工程与工程振动》[ISSN:/CN:]

卷:
期数:
2018年02
页码:
001-9
栏目:
论文
出版日期:
2018-08-03

文章信息/Info

Title:
Analysis of energy dissipating performance of damped staircase with different constructions and design parameters
作者:
邓雪松 罗德章 周云 陈章彦
广州大学 土木工程学院, 广东 广州 510006
Author(s):
DENG Xuesong LUO Dezhang ZHOU Yun CHEN Zhangyan
School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
关键词:
消能楼梯间阻尼填充墙减震楼梯减震性能框架结构
Keywords:
damped staircasedamped infill walldamped stairenergy dissipating performanceframe structure
分类号:
TU375.4
DOI:
10.13197/j.eeev.2018.02.1.dengxs.001
摘要:
为研究不同楼梯支座构造及阻尼填充墙厚度、阻尼填充墙砌体抗压强度、阻尼层剪切强度、减震支座剪切模量等设计参数对消能楼梯间减震性能的影响,采用ABAQUS有限元软件对4种不同楼梯支座构造、15个不同设计参数共19个消能楼梯间分析模型进行数值仿真分析。结果表明:不同楼梯支座构造中,设置减震支座可提供一定的水平、竖向刚度,改善楼梯间的屈服情况,减小梯板的竖向翘起位移,有利于地震中保持楼梯的稳定性;不同减震支座设置方案均可实现以减震支座的剪切变形消除梯板支撑效应、发挥良好耗能效果的减震目标;消能楼梯间构造简单、性能稳定,常用设计参数下均表现出良好的减震性能;阻尼填充墙厚度的增加,一定程度上增大消能楼梯间的刚度、水平承载能力;阻尼填充墙砌体抗压强度的变化对楼梯间减震性能影响较小;阻尼层剪切强度的增大将减小楼梯间的屈服位移,增大阻尼填充墙的压应力,建议采用剪切强度低的阻尼层材料;减震支座的剪切模量越大,梯板竖向翘起位移越小,减震支座剪切模量宜取0.5 MPa以上。
Abstract:
In order to study the effects of stair support construction and design parameters on the energy dissipating performance of damped staircase, 19 analysis models including 4 different stair support construction and 15 different design parameters were analysed by ABAQUS. The results showed that damped support can provide certain horizontal and vertical stiffness, which extended yield displacement of the staircase and decreased the vertical displacement of stair. Different damped support settings scheme can eliminate brace effect produced by stair and exert a good energy dissipation effect. The construction of damped staircase is simple and shows a good energy dissipating performance under regular design parameters. With the increase of the thickness of the damped infill wall, the stiffness and horizontal bearing capacity of the damped increased in a certain extent. The compressive strength of the damped infill wall has little influence on the energy dissipating performance of the staircase. The increase of damping layer shear strength will reduce the yield displacement of the staircase and increase stress of the damped infill wall. The bigger shear modulus of damped bearing is, the smaller vertical displacement of stair is. It is advised that shear modulus of damped bear should be 0.5 MPa above.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-06-23;改回日期:2017-09-15。
基金项目:国家自然科学基金项目(51178128)
作者简介:邓雪松(1967-),女,教授,硕士,主要从事结构抗震与减震控制研究.E-mail:deng2593@163.com
更新日期/Last Update: 1900-01-01