摘要本文设计的是钢框架结构，钢框架结构具有施工方便，节约资源，质量轻，抗震能力强等等优点。本次设计针对金山公司五层钢框架结构办公楼进行了：荷载代表值计算、地震力作用的验算、风荷载作用及框架位移计算、竖向荷载作用下内力计算，再进行内里组合对框架梁、边柱和中柱进行组合，接着进行构件验算，主次梁节点设计和柱脚设计，次要构件设计，再设计基础。最后引用ANSYS软件对计算过程进行优化。87103

　　本文设计了50。4m×18m的矩形五层钢框架结构办公楼，层高为3。6m，在结构布置中本着安全合理，节约资源的原则，按横向7。5m+3m+7。5m，纵向6×8。4m布置柱，每两柱之间均设置框架梁，次梁按纵向布置在框架梁上，每隔2。5m布置一根次梁。另外，顶层布置了0。6m高的女儿墙。屋面选用的是压型钢板，主次梁连接采用铰接连接。在每个楼层的北面两侧设置楼梯，其它房间是各种功能性房间，大的会议室和办公室布置在南边。在构件设计中柱脚采用的是靴梁式柱脚，柱脚平台尺寸为0。6m×0。6m。为了提高柱脚的刚度，在外侧焊两根槽钢。柱脚在地面以下0。3m，基础埋深2m，室内外高差0。45m，所以底层柱高为4。65m，靴梁柱脚以下到基础平台以上设短柱并且构造配筋。边柱设为独立基础，中柱联合基础，对基础进行选型、尺寸计算、计算基底反力、抗冲切验算最后配筋。

在ANSYS优化的过程先生成循环应用的分析文件，在这个分析文件里需要建立有限元模型，然后施加荷载值，接着计算结构的极限弯矩，然后提取、指定状态变量-体积和目标函数-极限弯矩，再分析并得到优化结果，通过优化减少钢材体积来减少钢材用量。并且ANSYS优化程序可以自定义优化过程同时控制变量，灵活性很好，可以适应不同的荷载组合。

毕业论文关键词：钢框架结构，优化设计，有限元模型

Abstract In this paper, the design of steel frame structure with convenient construction, saving resources, light weight, strong seismic capacity and so on。 The design for Jinshan five story steel frame structure office building contains: load representative value calculation, earthquake force effect checking, wind load and frame displacement calculation, internal force under the action of vertical load calculation, then inside combination of the combination of the frame beam, column and column, followed by the calculation of members, primary and secondary beam design and column design, the secondary component design and design basis。 Finally, the calculation process is optimized by ANSYS software。

50。4m * 18m rectangular five story steel frame structure office building is designed in this paper，3。6m height。 In the structural arrangement of the purpose of safe and reasonable, the principle of conservation of resources, according to the horizontal 7。5m+3m+7。5m, longitudinal 6 x 8。4m arrangement column, every two columns are disposed between frame beam, beam according to the vertical arrangement in the beam frame, arrangement of every 2。5m a root time beam。 In addition, the layout of the 0。6m high parapet。 The roof is made of profiled steel plate, and the primary and secondary beams are connected by hinge joint。 On each floor of the north side of the stairs, the other room is a variety of functional rooms, large meeting rooms and offices in the south。 The column in the component design is the boot type column foot platform, the column size of 0。6m * 0。6m。 In order to improve the column stiffness, lateral welding in two channel。 Column in the below ground 0。3m, foundation embedment depth 2m, height difference between indoor and outdoor 0。45M, so the bottom column high 4。65m, boots beam column feet below to above foundation platform design short columns and structural reinforcement。 Side column is set up as an independent foundation, in the joint foundation of the foundation, the foundation of the selection, size calculation, calculation of the base reaction force, punching and cutting the final reinforcement。