The Steel Structure Of Three-dimensional Garage With Stability Bearing Capacity Analyses

With the level of urban economic development and modernization to improve, thenumber of cars increases, static traffic problem has been it is very prominent, at this time, thecar cover an area of an area small, high density steel structure stereoscopic garage to getpeople’s attention. This paper studies the steel structure parking performance and stabilityunder the earthquake action of the bearing capacity of the static elastic method and thenonlinear static method, and through a series of comparison analysis and research onstructural changes in aspect ratio, the bearing capacity of structure stability affect, and rationaldesign scheme of its structure, mainly includes the following content:Referring to the related design specifications, combined with the design concept of somesteel three-dimensional garage basic design parameters was determined. For dynamic analysisof three-dimensional garage steel structure using SAP2000, combined with the effect for eachcalculation load aspect structure, through the contrastive analysis of structure under four kindsof different calculation conditions of the stable bearing capacity, the most unfavorable loaddistribution form is at the top of the full load mode.Through the analysis of different aspectratio of the overall stability of structure model of bearing capacity, found in the structure ofhigh aspect ratio is less than7,Influence of second order effect on structure stability bearingcapacity is not obvious.The garage failure generally concentrated in the low layer, the damage in the Y directionX direction is more serious, and with the increase of height to width ratio, the materialutilization rate is low, intensifies structure in two main directions of the overall stiffnessdifference, and should try to avoid the garage in a single library form..By each garage model for design rationalization, and compared with structural stabilitybearing capacity of before, found that when structure aspect ratio less than5, the structure stability bearing capacity of no obvious drop, steel quantity decrease is more noticeable; whenthe structure of high aspect ratio is greater than5, the structure stability bearing capacitydecreased obviously, the amount of steel have no obvious change. Through the evaluation onthe garage economy, the economy is good when the ratio of high to width in5.