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对支撑跨梁柱铰接的墙板内置人字形无黏结钢板支撑钢框架结构模型的抗震性能进行了分析。考察了罕遇地震作用下,非支撑跨梁柱连接形式对结构震后残余变形的影响。分析表明,多遇或罕遇地震作用下,非支撑跨梁柱刚接或铰接的10层结构模型与非支撑跨梁柱刚接的30层结构模型层间侧移均满足规范限值要求。罕遇地震作用下,当10层结构模型中非支撑跨采用梁柱铰接的钢框架时,因结构抗侧刚度较小,故层间剪力较小,但楼层侧移和残余变形均较大,最大层间残余侧移角超过0.005。当非支撑跨采用梁柱刚接的钢框架,以及对钢框架按双重抗侧力体系中的受弯框架进行调整加强后,可以大幅减小结构震后的残余变形,最大层间残余侧移角均不超过0.005,但结构用钢量较大。建议对于多层的支撑钢框架结构,在非支撑跨宜采用刚接框架,但并非一定要按双重抗侧力体系调整加强。
The seismic performance of the steel frame structure model with built-in herringbone unbonded steel plate supporting the beam-column hinge was analyzed. The effect of non-supporting beam-column connection on residual deformation after earthquake was investigated under rare earthquakes. The analysis shows that under the action of frequent or rare earthquakes, the lateral displacement between the 10-story structure model of a non-supported beam and the non-supported beam structure of the 30-story structure just meet the specification limits. Under rare earthquakes, when the steel frame with beam-column hinge is used as the non-supporting span in the 10-layer structural model, the shear resistance between layers is small because of the low side-to-side stiffness of the structure, but the lateral displacement and residual deformation are larger , The maximum layer residual side shift angle of more than 0.005. When the unsupported span adopts the steel frame just connected by beams and columns and the steel frame is adjusted and strengthened according to the bending frame in the double anti-lateral force system, the residual deformation after the earthquake can be greatly reduced. The residual lateral displacement of the maximum layer Not more than 0.005, but the structural steel is larger. It is suggested that for multi-story supporting steel frame structure, rigid frame should be adopted in non-supporting spans, but it is not necessary to adjust and strengthen according to double anti-side force system.