STAAD.PRO-BASED PARAMETRIC ANALYSIS AND PRE-ENGINEERED BUILDING DESIGN OPTIMISATION

Abstract

Because of their optimized member proportions, quick construction capabilities, and decreased steel consumption, pre-engineered buildings (PEBs) have become an efficient structural option for commercial and industrial applications. This article details the use of STAAD.Pro CONNECT Edition (v22.00.00.15) to conduct a three-dimensional structural analysis and performance assessment of a pre-engineered building with one story. The studied building has a 4.0-meter eaves height and a 5.0-meter ridge height, and it has a 20.0-meter longitudinal length and an 8.0-meter span. An all-inclusive space-frame model was created with 25 nodes and 56 members, using main frames with tapered built-up I-section and secondary structural elements with dimensions of ISA 200×150×20. In accordance with the requirements of IS 875 and IS 1893:2016, the structural model was examined under six main loading scenarios, including dead load, live load, wind load in two directions, and seismic loads. The stand.The 21 design combinations were created using Pro automatic load combination generating in accordance with the criteria of IS 800:2007. The three-dimensional stress distribution in the beam, nodal displacements, member forces, and support responses were all evaluated using linear elastic static analysis. With a maximum nodal displacement of just 0.33 mm at the apex under the governing gravity load combination, the structure demonstrates good stiffness, according to the study findings. The load combination LC20 (1.5DL + 1.5EX) produces the highest column base bending moment of 18.26 kN·m, showing that the bending response of the fixed-base PEB frame is controlled by seismic activity. It is clear that compression and shear effects are governed by gravity loading since the greatest column axial force of 27.52 kN and shear force of 7.38 kN happen under LC7 (1.5DL + 1.5LL). The greatest compressive and tensile stresses observed in the beam stress contour assessment under seismic X loading are 321.92 and 312.75 psi, respectively. These stresses are much lower than the yield strength of structural steel. This research shows that STAAD's automatic load combination assessment and sophisticated post-processing capabilities are crucial.A plus for deducing PEB system structural behavior. While demonstrating the need of codebased verification for key members and connections, the results validate that appropriately arranged tapered steel sections provide sufficient stiffness and strength.