双边钢次梁插入混凝土框架主梁的节点承载力试验研究  

The Experimental Study on Joint's Bearing Capacity of Bilateral Steel Timbers Inserting into Frame's Concrete Beam

作　　者：杨清发[1] 周剑波[2] 秦文科[3] 龚田牛[2] 

机构地区：[1]广东省电力设计研究院,广东广州510663 [2]武汉大学土建学院,湖北武汉430072 [3]武汉大学建筑物检测与加固教育部工程研究中心,湖北武汉430072

出　　处：《施工技术》2011年第8期75-78,97,共5页Construction Technology

摘　　要：钢次梁插入混凝土框架主梁的节点连接是一种新型的节点连接形式。通过采用节点性能试验的方法,对这种连接节点的受力性能和工程适用性进行了研究。试验结果表明,钢次梁插入主梁的连接节点为半刚性连接节点,抗弯能力有限,且当上翼缘焊接板与翼缘板的横向面积比控制在0.45～0.60时,节点的破坏始于钢次梁上翼缘连接焊板的拉伸屈服,属于次要构件的塑性破坏,满足安全设计和承载力的要求。The joint of steel timbers inserting into the frame＇s concrete beam is a new form of joint connection.In order to study engineering applicability and mechanical properties of this connection joints,combined with practical engineering,the joint experiment is carried out.Tests show that the joint is one form of semi-rigid connections with limited flexural capacity,and joint destruction begins with large cracks from the junction between the girder＇s flange welded plate and concrete beam and yield failure of the welded plate.It was also found that the layout of welded plate has a greater impact on the joint＇s bearing capacity.When the area＇s ratio of welded plate to the whole flange cross-section is controlled under the range of 0.35 to 0.45,joint destruction begins with the yield failure of the welded plate which is the minor component＇s damage and meets the safety and bearing capacity＇s requirements.

关 键 词：钢次梁 混凝土主梁 节点 承载力 

分 类 号：TU317.1[建筑科学—结构工程]