结构工程
残余物
刚度
支撑框架
撑杆
力矩(物理)
结构体系
非线性系统
工程类
惯性
转动惯量
帧(网络)
计算机科学
物理
机械工程
经典力学
量子力学
算法
作者
Felix C. Blebo,David A. Roke
标识
DOI:10.1016/j.engstruct.2015.07.016
摘要
Conventional braced frame systems exhibit limited drift capacity before brace buckling and associated damage leads to strength and stiffness degradation. A self-centering rocking core (SC-RC) system is being developed to provide significant drift capacity while limiting damage and residual drift. The SC-RC system consists of beams, columns, and braces branching off a central column. Friction at lateral-load bearings that transfer inertia forces from the floor diaphragms to the SC-RC is used to dissipate energy to reduce the overall seismic response of the SC-RC system. Vertically oriented post-tensioning bars provide additional overturning moment resistance and help to reduce residual drift. The paper introduces a preliminary design approach for SC-RC systems. Several SC-RC systems are designed, and pushover and dynamic nonlinear analysis results are presented. Dynamic analysis results confirm the expected drift capacity and behavior of the system.
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