自复位耗能结构的概念、分类及研究进展  

Concept,Classification and Development of Self-Centering Energy-Dissipative Structures

作　　者：池沛[1,2] 董军[1] 彭洋[1] CHI Pei;DONG dun;PENG gang(College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China;College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, China)

机构地区：[1]南京工业大学土木工程学院,南京211816 [2]扬州大学建筑科学与工程学院,江苏扬州225127

出　　处：《建筑钢结构进展》2018年第1期12-22,38,共12页Progress in Steel Building Structures

基　　金：国家自然科学基金(51708482);中国博士后科学基金(2017M621593)

摘　　要：残余变形对震后结构的整体性能具有重要影响,是基于性能的抗震设计的关键参数之一。为解决传统结构体系残余变形过大的问题,维持结构在震后的正常使用功能,自复位耗能结构(Self-Centering EnergyDissipative Structures,SCEDS)近年来成为国际土木工程领域的研究热点。在特定水准的地震作用下,SCEDS能够降低刚度、抑制地震作用增长、稳定耗散地震能量、对结构实现保护作用,同时利用自身的恢复力消除震后残余变形。首先阐释了控制残余变形对于结构性能的重要意义,总结了实现结构自复位的5个基本原理,并建议了相应的SCEDS的分类;然后对不同类别的典型SCEDS进行了历史回顾和现状总结;最后结合面临的问题展望了SCEDS的发展方向。The post-earthquake performance of structures is greatly affected by the residual deformation which is an essential indicator for performance-based seismic design.To address the drawback of large residual deformation for conventional structural systems and keep the building functional,agrowing interest has been focused on the self-centering energydissipative structures（SCEDS）in the seismic engineering.When subjected to a specific level of earthquake,SCEDS are able to lower the stiffness,restrain the seismic response,and also provide stable energy dissipation capacity and a restoring force.This helps to achieve safety protection for the structures and eliminate residual deformations after earthquake events.In this paper,the significance of controlling the residual deformations for structural performance is firstly explained.Then five different mechanisms of achieving self-centering are summarized,followed by a classification suggested by the authors.Historical overview and recent technology developments of typical SCEDS are introduced.The paper concludes with the perspectives of the future of those SCEDS in light of the present challenges.

关 键 词：研究进展 残余变形 基于性能的抗震设计 自复位耗能结构 摇摆 预应力 

分 类 号：TU352.1[建筑科学—结构工程]