| 运用防屈曲支撑的混凝土框架结构的抗震性能研究 |
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| 引用本文： | 赵杰,孙晓艳,霍林生.运用防屈曲支撑的混凝土框架结构的抗震性能研究[J].西北地震学报,2015,37(1):100-105. |
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| 作者姓名： | 赵杰 孙晓艳 霍林生 |
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| 作者单位： | 大连大学 土木工程技术研究与开发中心, 辽宁 大连 116622;大连大学 土木工程技术研究与开发中心, 辽宁 大连 116622;大连理工大学 建设工程学部, 辽宁 大连 116023 |
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| 基金项目： | 公益性行业科研专项经费项目(201508014);大连市科技计划项目 |
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| 摘 要： | 简要介绍地震安全社区的实现途径以及防屈曲支撑的构成和性能参数。运用ABAQUS软件对有无安装防屈曲支撑的钢筋混凝土框架模型进行动力时程分析,总结分析防屈曲支撑对钢筋混凝土框架结构的减震效果。结果表明,防屈曲支撑能大大降低钢筋混凝土框架结构在罕遇地震作用下的层间位移角,提高建筑物抗震性能,使地震安全社区中抗震设防烈度为Ⅶ度的建筑物能够抵御Ⅷ度罕遇地震。
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| 关 键 词： | 抗震性能 设防烈度 防屈曲支撑 减震 弹塑性动力时程分析 |
| 收稿时间： | 2014/5/15 0:00:00 |
Seismic Performance of Concrete Frame Structures with Buckling-restrained Braces |
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| ZHAO Jie,SUN Xiao-yan and HUO Lin-sheng.Seismic Performance of Concrete Frame Structures with Buckling-restrained Braces[J].Northwestern Seismological Journal,2015,37(1):100-105. |
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| Authors: | ZHAO Jie SUN Xiao-yan and HUO Lin-sheng |
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| Institution: | Research and Development Center of Civil Engineering Technology, Dalian University, Dalian, Liaoning 116622, China;Research and Development Center of Civil Engineering Technology, Dalian University, Dalian, Liaoning 116622, China;Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning 116023, China |
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| Abstract: | This article briefly introduces the seismic safety community and the composition and performance parameters of buckling-restrained braces.The seismic safety community is the community that experiences small destructive earthquakes.Specifically, these communities have carried out effective seismic fortification of all buildings in compliance with seismic hazard regulations.In the seismic safety community, improving the seismic performance of buildings is the primary goal.Local seismic fortifications meet the minimum seismic requirements, and the level of fortification of buildings is increased using certain technical measures.The traditional method of seismic fortification is to increase the size of major structural components, such as beams, columns, and shear walls, and to improve the ratio of reinforcements to buildings.However, increasing the amount of material increases cost and reduces the usable area of buildings.The new method calls for change to the seismic characteristics of the structure itself and improvements to its capacity for energy dissipation through the use of isolation and dissipation technologies.In the structural system, the seismic sections generally remain the same, and cost increases are small.Buckling-restrained braces have gained widespread application as measures for energy dissipation and earthquake resistance.They also overcome the disadvantages of traditional energy dissipation braces.The component''s full section will yield during compression, effectively minimizing local buckling failure and overall buckling failure.Therefore, the energy dissipation capacity of the components is maximized and the seismic response of the structure is reduced.The Dalian Aonan Mingxiu manor project described in the paper is a pilot project undertaken in the Dalian earthquake safety community.The project addresses building security and earthquake safety at the design stage.By installing buckling-restrained braces, the seismic characteristics of the structure itself are changed.To determine whether the structure can achieve the goals of seismic fortification, the project conducts an elastic-plastic analysis by installing buckling-restrained braces in the original frame structure.In this study, the ABAQUS software was used to conduct the dynamic and time-history analysis of two models of reinforced concrete framework: the origin structure and the structure with buckling-restrained braces added.The shock absorption effects of the buckling-restrained braces were analyzed.The results of the analysis showed that buckling-restrained braces could significantly reduce the inter-storey drift angle of a reinforced concrete frame during rare earthquakes and improve the level of seismic fortification buildings. |
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| Keywords: | seismic performance fortification intensity buckling-restrained brace shock absorption elastic-plastic dynamic time-history analysis |
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