Research On Vertical Mechanical Behavior Of Steel Frame-prefabricated Concrete Lateral Resistance Wall Fabricated Structure During The Construction And The Use Phase

Steel frame-prefabricated concrete lateral resistance wall fabricated structure (SPWsystem) as a new type of dual structural system for resisting lateral force, which can realizethe precast production and prefabricated installation. The SPW system has less wet operationsin the construction site and a short construction period. Moreover, the environmental-friendlySPW system is an ideal building system which can promote the steel structure housingindustrialization in China. This paper is aimed at researching the mechanical behavior of SPWsystem under the vertical load during the construction and use stage, which is based on theexperimental study and finite element analysis. What is more, this article makes a furtheranalysis of the vertical mechanical behavior of the multi-storey and high-rise SPW structuralsystem. The main contents and achievements are as follows:1. A full scale SPW systematic specimen of single layer and single span was testedunder three vertical load conditions, the test results showed that: in the period of constructionand installation phase of the wall positioning, lateral resistance wall withstood smaller verticalload and the top frame beam deflection was larger, while the bottom frame beam deflectionwas smaller. In the construction and installation phase of the bolt screwed, lateral resistancewall withstood larger vertical load and the top and bottom frame beam deflection was thesame. In the use phase, almost all the vertical load was borne by lateral resistance wall and theframe beams deflection were infinitesimally small.2. Using ABAQUS finite element software to establish specimen’s finite element modeland verifying the correctness of the modeling method. On this basis, having chosen sixinfluencing factors for varying parameter analysis, and the factors including the final order ofscrewing high-strength bolts, the positioning pre-tightening force of early screwinghigh-strength bolts, the anti-slip coefficient of friction surfaces, the wall width-beam spanratio, the wall thickness ratio and the wall offset ratio. In addition, the vertical mechanicalproperties and the changing law of frame beams deformation of SPW structural system can beobtained by those influencing factors, thus putting forward some reasonable constructionproposals for on-site assembly installation. 3. Taking practical engineering as the background, establishing six-story andtwelve-story SPW structural model of single span. And then selecting three kinds ofconstruction schemes for finite element comparative analysis, in order to obtain the verticalload distribution relationship and the changing law of frame beams deflection of themulti-storey and high-rise SPW structural system during the construction and use phase,especially the mechanical behavior of lateral resistance wall. Finally, to provide a theoreticalbasis and engineering application references for the industrialization of multi-storey andhigh-rise steel structure housing system.