| In steel braced frame system, support usually connect with the beam column by connecting plate welded to the flange of the beam column. But in the beam column hinged steel frame, This connection mode has a great influence on the rotational stiffness of the beam column joints.. In order to improve the assembly level of structure and to match the mechanical calculation model, This thesis put forward three easy assembly ways on support connection modes:① Supported connect to the vicinity of the column flange by bolt fastening through gusset plate;② Supported connect to beam bottom flange node nearby by bolt fastening through gusset plate; ③Supported connect to Flange joints nearby by bolt fastening through gusset plate.This paper presents three distrinct supporting connection types above as the research object, carry out the static calculation of the joint by the method of equal strength design, design reasonable bolt number and connecting piece size, make Static Analysis of the test pieces of three kinds of joints by using ANSYS finite element analysis software, analyze and compare the influence of different support connection modes on the stress distribution of the beam column joints and bearing capacity of the joint, Support for using three different connection mode of single cross two layers of planar hinged steel frame supporting structure system using finite element analysis software SAP2000 to resist lateral force analysis and study lateral stiffness,so as to obtain order of the joints and base shear force top displacement curve,etc.Research shows,1 Use support through the node board connection on the nodes near the column flange connection, the biggest stress influence on column, not conform to the seismic design of the "strong column weak beam" principle;2 The existence of the node plate can effectively transfer beam end plastic hinge, improve the bearing capacity of node;3 Bearing capacity of the support node by node plate and beam column flange connected is the largest, bearing capacity of the support node, followed by the gusset plate and beam flange connection,node by node bearing capacity of the support plate connected to the column flange minimum;4 Plate under lateral load, supported by node plate are connected to the flange of the beam column near the formation of the hinged steel frame supporting structure system of lateral stiffness, the largest support through the node plate connected to the nodes near the column flange hinged steel framework formed by the lateral stiffness of the minimum support structure system. |
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