外伸端板加劲肋设计及初始转动刚度模型  

Design of end-plate stiffener and a model of initial stiffness in extended end plate connection

作　　者：童根树[1] 赵伟[1,2,3] 杨强跃 

机构地区：[1]浙江大学建筑工程学院,杭州310027 [2]浙江树人大学城建学院,杭州310015 [3]浙江杭萧钢构股份有限公司,杭州310003

出　　处：《哈尔滨工业大学学报》2008年第12期2035-2038,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50578140);浙江省科技计划项目(20089C31027)

摘　　要：针对外伸端板连接中,端板加劲肋设计无规可循的问题,从翼缘内外螺栓均匀受力的要求出发,考虑加劲肋传递拉力的有效性,在要求加劲节点和端板厚为2^(1/2)倍的未加劲节点刚度相等的原则下确定了翼缘和加劲肋传递拉力的合理比例,最后导出了对端板外伸加劲肋的设计要求.基于等效梁理论和刚度组件法,提出了端板外伸连接节点初始转动刚度的计算公式,与ANSYS结果和相关试验结果的比较表明,初始刚度公式精度良好,并且计算过程简单易行,有望在工程中得到应用.This paper derives a design method for stiffeners in extended end plate beam - to - column connections by requiring the equal distribution of tensile forces among bolts inside and outside of beam flange. The effectiveness of triangular stiffeners in transmitting tensile forces is considered. Through requiring identical stiffness of the stiffened connection to that of the unstiffened connection with the end plate thickness of 40%, the rational allotment of total axial force to the stiffener is obtained. Simple formulas for calculating rotational rigidities of the connections with and/or without stiffeners are also proposed. Comparisons of calculation results with results of ANSYS and related tests show that the proposed equations can calculate the initial stiffness precisely, and can be applied to practical engineering.

关 键 词：外伸端板连接 端板外伸加劲肋 初始转动刚度 弯矩转角曲线 

分 类 号：TU392.5[建筑科学—结构工程] TU317.1