钢管高强混凝土梁柱节点的弹塑性研究-结构工程专业论文.docxVIP

长安大学硕士学位论文钢管高强混凝土梁柱节点的弹塑性分析 长安大学硕士学位论文 钢管高强混凝土梁柱节点的弹塑性分析 专 业：结构工程 硕士生：宁玮 指导教师：赵均海教授 摘 要 随着高层建筑的发展，钢管混凝土结构的应用越来越普及。钢管混凝土结 构能够充分发挥钢管和混凝土两种材料的优点，且具有强度高、重量轻、抗震 性能好等优点。节点的设计是钢管混凝土结构应用于高层建筑的关键。而目前 对于钢管高强混凝土柱一变宽度钢筋混凝土梁节点的研究工作尚不完善，因此， 本文在非线性弹望性理论分析的基础上，对该节点的力学性能进行研究。 基于理论分折，本文主要对钢管高强混凝土柱一变宽度钢麓混凝土梁节点 进行了三维有限元数值模拟计算。采用钢筋、钢管及混凝土分离计算模型，空 间加载，结果给出了节点各部件的应力应交分布雷，清晰遗显示了梁柱节点力 的传递路线、应力集中区域和最终破坏形态。文中提出了节点简单的计算方法 且给出了合理的结论。研究表明该节点形式满足“强节点弱构件”的设计要求。 论文的研究结果可以在一定程度上补充完善了钢营高强混援土节点的研究方面 的不足．为相关研究和设计人员提供参考。 关键词： 钢管高强混凝土柱 节点非线性弹塑性理论 有限单元法 长安大学颀士学位论文The 长安大学颀士学位论文 The elasto-plastic analyse of beam—column joint for high strength concrete—filled steel tubar structure Speeiaty： Structure Engineering Gratuate Student：Ningwei Instructor：Prof．Zhao Junhai ABSTRACT With the development of high-rise building．its moil=and inore popular也a1 concrete．filled steel tubular(CFST)is used．The steel tube concrete structure call make good use of two materials of steel tube and concrete and has other merits as high strength、light weight、good performance ofearthquake resistance．nle design of joints is the key that CFST is applied in hi曲一risebuildmg．Ⅵ娃le for the time being the research on joints for high strength concrete-filled steel tubar column‘ Variable width reinforced concrete beam is preliminary．Based on nonlinear elasto-plastic theory and finite elemem method analyse，raeckanical performance for thejoints was studied． Based on theory analyse，the three—dimensional finite elemental numedcal calculation Was carried out on joints for high strcngth concrete filled steel tubar column．Variable width reinforced concrete beam，the segregate calculafioual model of rebar、steel tube and concrete Was adapted．．The resdt show s廿ess and stain dismbuted figures of all components、slxess intensified field、the load transfer machanisn and ultimate damage paaem．The Simple calculated method was西．ven and reasonable conclusion was presented．The rescach proves the design requkements of“the joint is stronger than the fi-aiTl