Study On Calculation Method Of The Shear Resistance Of Light-gauge Steel Composite Wall

The present building code and standard in China applied massive use of structural system for decades of years, and the studying for Light-Gauge steel joist structure system was at the initial stage at present. The Cold-formed steel of C-section system and Integra Building Systems (web steel) which composed of different types of tubes and clips were the first developed low-rise residential structure system .The Web steel system had many analysis of tests based on finite element analysis. But it is lack of analysis about the resisting force contribution of each element and it was short of studying on calculation method of the shear resistance based on the mechanism. The capability of shear resistance of the composed wall became the most important fact while the Web steel system is developing from low-rise to tier residential structure. So analysis about shear resistance of the composed wall and simplified calculating method are absolutely necessarily.Web Light-Gauge steel joist structure system is a new type of steel structure, which has many advantages such as light weight, higher standardizing, assigning space flexible, good performance of the seismic resistant, industrialization producing, short Construction period, protecting environment and economizing energy sources etc. This kind of structure has been used mostly in low-rise residential building for 20 years in North America. To facilitate the promotion of this structure system, the text has found some reliable method to calculate its shear strength and lateral displacement after studying the calculating method of timberwork and Cold-formed steel systems. The method can correctly and reliably calculate its shear strength and lateral displacement. It has solved the problem that we can only depend on finite element analysis to make engineering design but not the loaded mechanism.Based on the test results of shear resistance of web steel composed wall (which was made in Wuhan University of Technology) and a referred test (The shear resistance of Cold-formed steel stud composed wall which was made in Chang'an University and Xi'an University of Architecture &Technology), The text has analysis the composed wall and calculate it's shear strength and lateral displacement according to Japanese building standard in timberwork.1. The joint shear resistance of self tapping screw and Zhujiaoban was determined by analyzing the results of tests.2. The transfer mechanism, deformation principle and every destroy pattern for resist horizontal shear force of Cold-formed steel stud composed wall are analyzed in this paper. From above the paper deduces the simplified method of calculation for Web steel composed wall with two methods: the whole method and the simplified method.3. Comparing the results calculated by formula with the test results, a conclusion is made to validity the reliability of the method above. The formula result fits well with the test results.4. Borrowing the method of the stiffness calculation for timberwork composed wall, the text deduced the stiffness calculating method of the wall to calculate it's deformation. It shows that the method is reliable.5. Taking a composed wall of a building as an example, the text calculate its shear resistance and demonstrate the validity of its reliability.