交叉形和Y形耗能支撑钢框架滞回性能分析

为避免Y型耗能支撑钢框架在地震作用下由于耗能梁段对钢梁及楼层产生的不利影响,提出了一种改进的交叉形耗能支撑钢框架结构.采用ABAQUS6.11有限元分析软件对交形耗能支撑钢框架结构进行了滞回性能分析,并与传统Y形耗能支撑钢框架结构从水平承载力、抗侧刚度和耗能能力三方面进行了对比分析.研究表明：在设计合理的情况下,交叉形耗能支撑钢框架具有较大的抗侧刚度和良好的耗能能力,并且其强度、刚度、耗能能力均优于传统Y形耗能支撑钢框架结构.

Analysis on cross shape and Y shape energy-dissipating braced steel frames

In order to eliminate the negative effect of link beams of Y shape energy-dissipating braced steel frames on the beam and floor under earthquake loading, the cross shape energy-dissipating braced steel frames are proposed as the improved energy-dissipating braced steel frames. The finite element software ABAQUS 6.11 is applied to analyze the behavior of the cross shape energy-dissipating braced steel frames under cyclic loading, and then the improved frames are compared with the Y shape energy-dissipating braced steel frames from the following aspects including strength, stiffness and energy dissipation. Analysis indicates that under the condition of reasonable design, the cross shape energy-dissipating braced steel frames can be provided with the large lateral stiffness and great energy dissipation capacity, and the performances of its strength, stiffness and energy-dissipating are better than Y shape energy-dissipating braced steel frames.