Seismic performance analysis of assembled integral concrete frame structures based on multi-scale models.

Magnetic Steel Chamfer

Abstract: The requirements of assembly technology and the use of connection joints pose new challenges to the numerical simulation analysis of prefabricated concrete structures, highlighting the contradiction between computational efficiency and simulation accuracy. Based on the general finite element software ABAQUS, multi-scale modeling was used to simulate and analyze the seismic performance of assembled integral concrete frame structures. Firstly, based on experimental data of assembled integral concrete beam column structures, the correctness of the multi-scale element interface connection method was verified. Then, static pushover analysis and dynamic elastoplastic time history analysis were conducted on the multi-scale model of the assembled integral concrete frame structure, and compared with the seismic response and damage situation of the cast-in-place concrete frame structure. The results indicate that multi-scale modeling can effectively improve computational accuracy and reduce computational costs, effectively simulating the failure characteristics of assembled integral concrete frame structures and the seismic performance of the overall structure; Compared with cast-in-place structures, assembled integral frame structures have smaller lateral stiffness and better ductility under unidirectional static pushing action. Their seismic performance is similar under rare seismic action of 7 degrees, and the maximum displacement of the top floor increases by 3.8%; Multi scale modeling methods can be used for the analysis of prefabricated concrete structures..

Mainly engaged in research on the theory and application of prefabricated concrete structures,.

(Email) wxizhang2000@hnu.edu.cn ..

http://qks.cqu.edu.cn/cqdxzrcn/article/abstract/202310006.