高强钢组合单层单跨K型偏心支撑框架受力性能试验研究

发布时间：2018-06-29 11:17

本文选题：高强钢 + K型偏心支撑　；参考：《西安建筑科技大学》2013年硕士论文

【摘要】：高强钢组合K型偏心支撑是耗能梁段使用屈服强度低的钢材，其余构件采用屈服强度高的钢材。它综合了高强钢承载能力高和偏心支撑钢框架抗震性能好的优点，是一种高效的抗震钢结构体系，是这两个研究领域的交叉和融合。高强钢组合偏心支撑钢框架体系是利用耗能梁段耗能，当耗能梁段进入塑性时，其他构件还处于弹性阶段。为了研究这种结构体系的抗震性能，本文主要开展以下工作：（1）在已有的高强钢和偏心支撑的研究成果的基础上，考虑耗能梁段长度的不同对结构抗震性能的影响，设计了剪切屈服型和弯曲屈服型两种1/2缩尺试件。两种试件分别进行单调加载和低周往复加载试验；（2）根据试验现象和采集到的数据，对试验结果进行分析。单调加载中得出试件的承载力、抗侧刚度和屈服位移；低周往复加载中得出滞回曲线、骨架曲线、刚度退化、延性系数和耗能能力等；（3）对剪切屈服型和弯曲屈服型两种试件的抗震性能进行了对比；（4）对循环加载下的两种试件通过应变分析说明了试件的破坏形式和偏心支撑钢框架破坏时各个构件的受力情况；（5）提出了K型偏心支撑钢框架震后修复的建议。
[Abstract]:K eccentrically braced with high strength steel is the steel with low yield strength in the energy dissipation beam section, and the steel with high yield strength is used in the other members. It combines the advantages of high strength steel bearing capacity and eccentrically braced steel frame with good seismic performance. It is an efficient seismic steel structure system and is the intersection and fusion of these two research fields. The high strength steel composite eccentrically braced steel frame system uses the energy dissipation beam section to consume energy. When the energy dissipation beam section enters the plastic stage, the other members are still in the elastic stage. In order to study the aseismic performance of this kind of structural system, the main work is as follows: (1) based on the existing research results of high strength steel and eccentrically braced, the influence of different length of energy dissipation beam on the seismic performance of the structure is considered. Two types of 1 / 2 scale specimens, shear yield and bending yield, are designed. Two kinds of specimens were subjected to monotone loading and low cycle reciprocating loading respectively. (2) the test results were analyzed according to the experimental phenomena and the collected data. The load-carrying capacity, lateral stiffness and yield displacement of the specimen were obtained by monotonic loading, hysteretic curve, skeleton curve, stiffness degradation, ductility coefficient and energy dissipation capacity were obtained during low-cycle reciprocating loading. (3) the seismic behavior of shear yield type and bending yield type are compared. (4) two kinds of specimens under cyclic loading are analyzed by strain analysis to explain the failure form of the specimen and the stress of each member when the eccentrically braced steel frame is destroyed; (5) the suggestion of repairing K-type eccentrically braced steel frame after earthquake is put forward.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU391

【相似文献】