Y型偏心支撑加固混凝土框架抗震性能试验研究

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"Seismic performance testing of reinforcement concrete frames strengthened with Y-eccentrically brace (2012年)"，这篇论文详细研究了采用Y型偏心支撑加固的钢筋混凝土框架结构在地震作用下的性能。该研究由WANG Da-peng、YU An-lin和XUE Li-ming等人进行，发表在《重庆大学英文版》（Journal of Chongqing University (English Edition)）2012年第11卷第4期中，文章编号为1671-8224(2012)04-0151-10。论文的主要目的是通过实验来考察和分析地震对1/3缩尺的两座单层单跨钢筋混凝土框架结构（RC框架）的影响，这些结构采用了Y型偏心支撑进行增强。在地震模拟测试中，研究人员采用了伪动力试验方法，这是一种常用于结构工程中的实验技术，可以模拟真实地震对结构的动力响应。他们选取了不同峰值加速度的El-Centro地震波作为模拟地震荷载，以适应中国建筑抗震设计规范的要求。这种模拟方法能够全面评估结构在实际地震中的抗震性能和力学特性。论文重点探讨了Y型偏心支撑如何改善钢筋混凝土框架的抗震性能。偏心支撑在结构中起到了重要的能量耗散和刚度增强的作用，可以有效减小地震对结构造成的破坏。通过对测试结果的分析，研究人员可能揭示了支撑位置、偏心效应以及结构响应与破坏模式之间的关系，这些都对理解结构在地震荷载下的行为至关重要。此外，论文还可能讨论了在不同地震强度下，加固后的框架结构的变形能力、强度、延性以及恢复力特性。这有助于工程界更好地理解和设计类似的加固方案，以提高现有建筑的抗震安全性。通过这样的实验研究，可以为未来抗震设计提供理论依据和实践经验，促进结构工程领域的进步。这篇论文是自然科学领域的重要贡献，特别是对于土木工程和结构抗震设计的研究者来说，它提供了宝贵的数据和见解，有助于推动钢筋混凝土结构在地震环境下的安全性和耐久性的提升。

Journal of Chongqing University (English Edition) [ISSN 1671-8224]

Vol. 11 No. 4

December 2012

151

Article ID: 1671-8224(2012)04-0151-10

To cite this article: WANG Da-peng, YU An-lin, XUE Li-ming. Seismic performance testing of reinforcement concrete frames strengthened with Y-eccentrically brace [J]. J

Chongqing Univ: Eng Ed [ISSN 1671-8224], 2012, 11(4): 151-160.

Seismic performance testing of reinforcement concrete

frames strengthened with Y-eccentrically brace



WANG Da-peng

1,2,†

, YU An-lin

1,2

, XUE Li-ming

Jiangsu Key Laboratory of Structural Engineering, Suzhou 215011, P. R. China

School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, P. R. China

Received 9 April 2012; received in revised form 12 May 2012

Abstract: Two single-storey single-span reinforcement concrete (RC) frame structures strengthened with Y-eccentrically brace

were designed and manufactured to be 1/3 scale. The pseudo-dynamic testing method was used to study the mechanical

characteristics and the seismic performance under El-Centro earthquake action with different peak acceleration adjusted by

China’s Code for Seismic Design of Buildings. The test results indicate that RC frame structures strengthened with Y-

eccentrically steel brace present perfect seismic performance under strong earthquake action owing to the good ductility, strong

bearing capability and fine energy absorbing capability provided by energy dissipation element and high lateral stiffness provided

by diagonal braces. The seismic performance is also affected by the length of outsourcing steel at the joint between energy

dissipation element of eccentric steel brace and RC frame beam. The joint should be considerably designed to make sure that

shear failure can firstly occur in energy dissipation element.

Keywords: Y-eccentrically steel brace; energy dissipation element; pseudo-dynamic test; seismic performance; shear failure

CLC number: TU311 Document code: A

1 Introduction

In recent years, using steel braces among

reinforcement concrete (RC) frame columns has been

an effective way for energy dissipation and vibration

damping through a large number of theoretical and

experimental verification. It also has been proved that

this technology is easy to fit in with China’s Code for

Seismic Design of Buildings and greatly fit for the

energy dissipation requirements of high-rise building

structures. The theoretical principle of steel frames

strengthened with eccentric steel brace has been

extensively researched and thoroughly understood

[1-11]

†

WANG Da-peng (王大鹏): wangdapeng@mail.usts.edu.cn.



Funded by National Natural Science Foundation of China (Grant

No. 51078248) and the Priority Academic Program Development

of Jiangsu Higher Education Institutions (PAPD).

In thus structures, the lateral stiffness and bearing

capacity are enhanced by eccentric steel brace, and the

energy input by the earthquake action is dissipated by

the shear yield of an energy dissipation element, which

enables to improve the seismic performance of

structures. This kind of eccentric steel brace with

unique advantages also has been applied in

reinforcement and reconstruction of RC structures

recently. But it should be noted that there are still some

critical problems on eccentric steel brace in RC

structures because of the lack of theoretical and

experimental research and relatively few engineering

examples. One of the prominent problems is that the

joint between the energy dissipation element of an

eccentric steel brace and an RC frame beam is more

sophisticated than that in a steel frame. The joint is in a

very complex stress state subjected to moment, shear

and axial forces at the same time. Under this

background, research on the mechanical characteristics

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