Earthquake resistant design system based on structural integrity

Abstract

The present invention discloses an earthquake resistant design system based on structural integrity. The system mainly comprises a structural component setting unit, a model generation unit and an earthquake movable simulation unit. The structural component setting unit comprises a surface ground foundation setting module, an upper structural component setting module and a lower structural component setting module. The surface ground foundation setting module, the upper structural component setting module and the lower structural component setting module set condition of surface ground foundation, a upper structural component parameter and a lower structural component parameter separately according to non-linear characteristic or structure elastic-plasticity. The model generation unit sets conditions and parameters of an unit according to the structural component based on a structural component model stored in a structural component database and performs numerical modeling on integrity of an upper structure and a lower structure to generate an engineering structure model with an integral structure; The earthquake movable simulation unit sets earthquake intensity, and generates an analog earthquake wave which enters in the lower structural component through the surface ground foundation and then is transmitted to the upper structural component.

Description

Technical field [0001] The invention involves the field of seismic design, especially the earthquake -based seismic design system based on structural integration. Background technique [0002] While the Wenchuan earthquake that occurred in 2008 caused huge losses to the country's economy and people's lives and property, it also highlighted many shortcomings of my country's earthquake -resistant design under the conditions of rare earthquakes.The most prominent problem is that the current earthquake -resistant and earthquake design software system is still based on the development process of static method (the development process of structural earthquake response analysis can be roughly divided into: static method, reaction spectrum method, and power timing analysis method).Mainly calculate, check the strength of the material, and design the upper structure and foundation separately.There are many problems with the structure designed by this method, which cannot resist the attack ...

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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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