ABSTRACT

A novel self-centering braced double-column rocking bent (SBRB) consisting of a double-column rocking bent and traditional or self-centering energy dissipation braces is developed analytically and numerically to enhance the seismic resilience. The analytical model of the SBRB is established, and numerical models of the SBRB are built to evaluate its seismic performance. Numerical results indicate that the SBRB is featured by prominent seismic performance including high lateral stiffness and strength, stable energy dissipation ability and good self-centering capability. The parameters of braces, axial force ratio, tendon prestress, and confinement play significant roles in the seismic responses of SBRB.

摘要

一种新型自定心支撑双柱摇摆弯头 (SBRB) 由双柱摇摆弯头和传统或自定心消能支撑组成，通过分析和数值方法开发，以增强抗震能力。建立了SBRB的解析模型，建立了SBRB的数值模型，评价了其抗震性能。数值结果表明，SBRB具有突出的抗震性能，包括高侧向刚度和强度、稳定的能量耗散能力和良好的自定心能力。支撑参数、轴力比、预应力束和约束在 SBRB 的地震响应中起着重要作用。