Seismic Design System Based on Structural Integration

Abstract

The invention discloses an anti-seismic design system based on structural integration, which mainly includes a component setting unit, a model generating unit and an earthquake simulation unit. Component setting unit: including the surface soil foundation setting module, the upper component setting module and the lower component setting module, the surface soil foundation setting module, the upper component setting module and the lower component setting module respectively according to the nonlinear characteristics or structural elastoplasticity to set surface soil foundation conditions, upper and lower member parameters; model generation unit: based on the member model stored in the member database, according to the conditions and parameters set by the member setting unit, the upper structure and lower member The structure is numerically modeled as a whole to generate a structurally integrated engineering structure model; the earthquake motion simulation unit: set the strength of the earthquake force, generate simulated seismic waves, and pass the simulated seismic waves into the lower components through the surface soil foundation, and then upload them from the lower components to the superstructure.

Description

technical field [0001] The invention relates to the field of anti-seismic design, in particular to an anti-seismic design system based on structural integration. Background technique [0002] The Wenchuan Earthquake that occurred in my country in 2008 caused huge losses to the national economy and people's lives and properties, but also highlighted many shortcomings in the seismic design of civil and architectural structures in my country under rare earthquake conditions. The most prominent problem is that the current anti-seismic design software system is still based on the quasi-static method (the development process of seismic response analysis of structures can be roughly divided into: static method, response spectrum method, and dynamic time-history analysis method). Calculation-based, verification is carried out according to material strength, and the superstructure and foundation are designed separately. There are many problems in the structures designed by this meth...

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Problems solved by technology

[0003] 1) The quasi-static method can only simply replace the inertial force caused by ground motion with static load, but cannot consider the influence of frequency components in dynamic load

Especially in the event of an extremely large earthquake, the strong dynamic load will cause a substantial decrease in the stiffness of the structure and cause an increase in the natural period, which will greatly affect the dynamic response of the structure, and this complex characteristic cannot be passed through the pseudo-static law to be considered

[0004] 2) Most structures will enter the elastic-plastic deformation stage under the action of strong earthquakes. Compared with elastic deformation, excessive plastic deformation will cause the structure to crack, the concrete will fall off, or even be destroyed; but on the other hand, due to the plastic stage The reduction of structural stiffness and the increase of the natural period of the structure change the seismic response characteristics of the structure, and the non-elastic non-recoverable deformation can dissipate the input seismic energy, thereby reducing the damage to the structure caused by the earthquake; in the nonlinear state, whether the structure is damaged or not will Depends on plastic deformation capacity or the ability to dissipate energy, not on strength, the strength condition does not properly evaluate the seismic capacity of the structure

However, compared with Japan and other earthquake-prone countries, the application of seismic design of bridges in my country is still immature

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