钢框架梁柱T型钢半刚性连接节点力学性能试验及数值研究-建筑与土木工程专业论文.docxVIP

(3)梁腹板增加角钢可以提高弹性极限和极限变形。 (3)梁腹板增加角钢可以提高弹性极限和极限变形。 (4)在T型钢连接节点的加强方式中，根据工程的具体情况，选择增加 T型钢连接件肋板、厚度及宽度、螺栓数量，可显著提高节点的强度 和刚度。 (5)T型钢连接节点在循环荷载作用下，滞回曲线比较饱满，具有良好的 抗震性能和较高的承载力、延性， (6)梁端竖向循环荷载主要由T型钢与柱翼缘接触面上的摩擦力承担。 (7)接触面的摩擦力随着荷载级别的增加而增加。摩擦力极值取决于螺 栓预紧力。 关键词：T型钢连接增强型节点力学性能滞回曲线节点试验数值模 拟预紧力摩擦力 II 万方数据 RESEARCH RESEARCH ON THE MECHANICAL PROPERTIES OF STEEL BEAM．TO．COLUMN T—STUB SEMI-RIGID CONNECTION V汀TH TEST AND SIMULATION ABSTRACT Steel flame is a common structural system in construction engineering． Because of its light weight，high strength，good seismic performance，short construction period，recycling use，little environmental pollution，good sustainability and other comprehensive advantages，once was known as the ¨green buildingin twenty—first Century．Beam—to-column connection has been a hot topic in the research of steel flame．A large number of traditional welding node destroy brittle in Kobe，Japan and the United States Northridge earthquake． Typical semi-rigid connection with bolts has been paid extensive attention． Beam．to．column T．stub connection is a typical semi—rigid connection and it has a good ductility and seismic performance．In addition，it has a good applicability and broad application prospects for engineering structure．In order to improve the strength and stiffness of the node and to meet the design concept of¨strong node weak component¨，this paper studies the enhancement of the node based on the existing tests of typical T-stub connections nodes．In this paper，means of experiment and numerical simulation are employed to study mechanical properties of T．stub connection nodes and the study is significant for the application and extension of structure of semi—rigid connections． The paper gives six kinds of structural strengthening scheme based on the mechanical properties of typical beam—to—column T-stub connection node， according to which eight full-scale model specimens have been designed ender low cycle loading in MTS electro hydraulic servo loading system．Then app