China's first 6-story foot-size solid cold-formed thin-walled steel structure house shaking table test was successfully completed in Chongqing University.

China's first 6-story foot-size solid cold-formed thin-walled steel structure house shaking table test was successfully completed in Chongqing University

China's first 6-story foot-size solid cold-formed thin-walled steel structure house shaking table test was successfully completed in Chongqing University.

On June 4, 2020, the vibrating table test of the first full-size solid 6-story cold-formed thin-walled steel structure house was successfully completed in the vibrating table laboratory of Chongqing University, and achieved a complete success.

The test project originated from the National Key Research and Development Program Project "Research and Demonstration Application of High-Performance Steel Structure System" (2016YFC0701201) chaired by Academician Zhou Xuhong and Prof. Shi Yu, and the National Natural Science Foundation of China (NSFC) Major Project "Research on High-Efficiency Seismic Resistant System of Steel Structure" (51890902).The 6-storey cold-formed, thin-walled steel house adopts the steel pipe end columns-double-side skinned steel plates, shear walls and clamp-supported single-layer thin-walled steel plates. The 6-story cold-formed thin-walled steel structure house adopts two lateral force-resisting systems: steel pipe end columns - double-sided skinned steel plate shear wall and clamped single-layer thin steel plate shear wall, and the structural plan dimension of the model is 5.6m (length) × 4.2m (width), with a floor height of 2.7m and a total height of 16.2m. This cold-formed thin-walled steel structure vibration table test has a series of features such as new structural system, big size of the model, large structural height to breadth ratio, and high intensity of the load condition up to 8 degrees, etc., and it is the first time for the world to have 6-story cold-formed thin-walled steel structure house in both directions. It is the world's first 6-story full-scale cold-formed thin-walled steel structure house with two-way ground vibration input vibrating table test.

The vibration table test of the 6-story full-scale cold-formed thin-walled steel structure house by Hubei Huaxington Modern Steel Structure Manufacturing Co., Ltd. processing production and installation, the structure through the steel beam base and vibration table connected to the table, longitudinal and transverse to the two types of new shear wall is with the University of Waterloo, Canada Professor Xu Lei joint R & D and manufacturing, with shear bearing capacity is high, rigidity and easy to install and manufacture and other characteristics. Academician Zhou Xuhong guided the whole process of specimen design, specimen installation to test loading.

At present, the country is vigorously developing assembly steel structure building, cold-formed thin-walled steel structure houses with low steel consumption, light weight, high assembly efficiency, less labor input, production and construction process are dry work, noise, dust and construction waste emissions, and housing quality is easy to ensure that is a widely used assembly green building. 22 May construction phase and June 3 ~ 4 normal use of the phase The results of the shaking table test on May 22 and the normal use phase on June 3~4 show that the cold-formed thin-walled steel multi-storey houses are safe and reliable, which will certainly promote the development and application of multi-storey cold-formed thin-walled steel structure system in China.