Seismic behavior based optimization method and system for building structure

Abstract

The invention provides a seismic behavior based optimization method and system for a building structure. The seismic behavior based optimization method comprises the following step: A1, determining the integral target seismic behavior index of the structure and the seismic behavior index of a target construction member; A2, designing an initial structure, and dividing the construction members with the same boundary condition, the same cross section size and the same material parameter in the same layer of the structure into one class; A3, obtaining the integral damage index of the structure; A4, detecting whether the integral damage index satisfies a constraint condition, if so, performing step A5, and if not performing step 2; A5, obtaining the seismic behavior index of various classes of construction members of the structure; A6, detecting whether the seismic behavior index of various classes of construction members of the structure satisfies a condition of convergence, if so, finishing the optimization, and if not, performing step A7; and A7, determining the step size of next optimization step, updating a structural system, and returning step A3.

Description

technical field [0001] The present application relates to the field of anti-seismic technology of building structures, in particular to a method and system for optimizing anti-seismic performance of building structures. Background technique [0002] Most of the high-rise buildings in our country are built in the earthquake zone, facing the serious threat of earthquake disasters. Earthquake damage analysis shows that in an earthquake, the building structure will first be damaged in the weak link of the structure. If the internal force and deformation of the damaged part are not shared by the adjacent structural components in time, the damage will accumulate here under the subsequent earthquake. The seismic performance of the component will be further degraded to failure, and if the component is a key component of the structure, it may also cause continuous collapse of the structure. [0003] At present, the optimization method of building structure is mainly to achieve the p...

AI Technical Summary

Problems solved by technology

However, even if the displacement angle between the layers of the structure is guaranteed to be equal, it still cannot solve the problem that the overall seismic performance of the structure is reduced due to the damage of the weak link of the structure during the earthquake.

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