- 摘 要
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（中國建筑科學研究院， 北京 100013）
［摘要］中震或大震作用下，通過連梁的損傷耗能保證主體結構的安全。目前結構設計時一般對全樓采用統(tǒng)一的連梁剛度折減系數(shù)，這與實際結構中連梁損傷情況不符，也將影響結構中剪力墻受力。通過對結構進行彈塑性分析，得到連梁的損傷狀態(tài)，進而計算得到連梁剛度折減系數(shù)。通過對實際工程進行計算，可以得到如下結論：不同部位的連梁剛度折減系數(shù)不同；連梁剛度折減系數(shù)受初始配筋影響很??；但受地震波的影響較大，不同的地震波會得到不同的剛度折減系數(shù)。
［關鍵詞］連梁； 彈塑性分析； 損傷； 剛度折減系數(shù)
中圖分類號：TU318+.1文獻標識碼：A文章編號：1002-848X(2018)09-0028-06
Application of method on stiffness reduction coefficient of coupling beam determined by elastoplastic analysis
Hou Xiaowu, Wang Ying, Yang Zhiyong
(China Academy of Building Research, Beijing 100013, China)
Abstract:Under the medium or strong earthquake, the damage and energy dissipation of coupling beam can ensure the safety of the main structure. At present, the uniform stiffness reduction coefficient is applied in structural design, which does not match the actual damage of coupling beam and would affect the force of the wall. The elastoplastic analysis was conducted to get the damage state of the coupling beam and its stiffness reduction coefficient was calculated. Through the calculation of an actual project, the following conclusions are drawn, the stiffness reduction coefficient of coupling beam from the different place is different. The initial reinforcement has little influence on stiffness reduction coefficient, however, the ground motion affects stiffness reduction coefficient significantly, the different ground motion results in different stiffness reduction coefficient.
Keywords:coupling beam; elasto-plastic analysis; damage; stiffness reduction coefficient
作者簡介：侯曉武，博士，Email:houxiaowu@cabrtech.com。
