Abstract This graduation design is a layer of steel frame - 12 center support structure of commercial office buildings , mainly on the part of structural design。 The structural design of the structure including the foundation, wall, column, beam, plate, stairs, details for details and so on。 Then put these structures to form the structural system of buildings or structures, including vertical and horizontal load and resistance system。 Then a load of each case should be transferred to the base。 Due to this design for the frame supporting structure, the design of the support is particularly important。 Also the designs of the support beam, column are very important。
Structural design stages can be pided into three stages:
First,the stage of structural scheme : the importance of building construction, location of the seismic fortification intensity, engineering geology exploration report, the building site of the category and the height of the building and layer determine the building structural form。 The structure of concentrically braced steel is used in this project;
Second,the stage of structure calculation: including the load calculation, internal force calculation and component calculation;, An additional computing of framework and support collaborative work are used in this computing。
Third,the phase of working drawing design: according to the calculation results, component layout and component reinforcement were finally determined。 Also according to the requirement of the specifications, the structural component and structural measures were determined。
Keywords: Steel frame;Center support;Seismic design;internal force calculation