| High-strength foamed concrete shear wall of straw board light steel is a new shear wall system which is invented by our research group and a company of Nanjing by using wasted straw reasonably.At the same time,our research group cooperating with China Construction Steel Co.,Ltd achieved the prefabricated assembly construction technology of the shear wall structure.It provides a reference for the later factory construction.This paper studied the seismic behavior of high-strength foamed concrete shear wall of straw board light steel by two story model with full scale on shaking table.This paper studied the seismic behavior of buildings of this type,analyzed the seismic behavior in this test.Proposals have been proposed for designing and construction based on the study.A full-scale model of high-strength foamed concrete shear wall of straw board light steel building has been made and tested on the shaking table.This paper analyzed me seismic weak position of the stone structure,verified the seismic behavior of structure.Analysis of the dynamic response of the structure has been made.It contained acceleration,velocity and strain of the light steel.Reach has been made on the changing of natural frequency,damping ratio and vibration mode under different of different intensity.Response of acceleration and velocity of the structure under different earthquake load have been analyzed.The mechanic behavior of reinforcement bars in the corner of the structure and their impact to the seismic behavior of the structure have been studied.Evaluation of high-strength foamed concrete shear wall of straw board light steel buildings has been made based on the test results.It is observed that this building is fully able to meet the seismic-requirements of 9 degree of buildings in town and village,even higher.Therefore,in the practical engineering application,we can use high-strength foamed concrete shear wall of straw board light steel buildings,which plays a better seismic performance.On the basis of experiment and research of existing research results,referencing to the "light steel light concrete structure technical regulations"(JGJ383-2016)in the shear wall shear wall shear strength calculation formula,the seismic shear capacity calculation formula was carried out and provided.Compared with the limit stress state observed from experiment,it shows that the use of this theoretical calculation formula is effective,which laid a theoretical foundation for widely spreading the recycled concrete block.The finite element analysis software Abaqus was used to modeling the high-strength foamed concrete shear wall of straw board light steel structure,modal analysis and time-history analysis have been performed.It reached the differences of the structure and analyzed the weak area,studied the seismic behavior of the structure.It indicated that the results of the finite element modeling were consistent with the test results,it could provide a reference for other simulation.Time-history analysis have been performed to modeling the multi-layer high-strength foamed concrete shear wall of straw board light steel structure,it shows that in the 7 degree area,when the foam concrete is not less than 5MPa,the maximum height of the 256mm thick high strength light steel foam concrete shear wall house is 26.4m(8-story);In the 8 degree area,when the foam concrete is not less than 5MPa,the maximum height of the 256mm thick high strength light steel foam concrete shear wall house is 19.8m(6-story);In the 9 degree area,when the foam concrete is not less than 5MPa,the maximum height of the 256mm thick high strength light steel foam concrete shear wall house is 9.9m(3-story).Results of this study may provide some experimental,theoretical and analytical basis for the application and promotion of high-strength foamed concrete shear wall of straw board light steel buildings,but also has some reference value for a deeper research on high-strength foamed concrete shear wall of straw board light steel buildings. |
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