A seismic impact response analysis method for engineering structures

A technology of engineering structure and collision response, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as the increase of integral points, system energy dissipation, dissipation, etc., to ensure accuracy and high computing efficiency , The effect of solving the contradiction between efficiency and accuracy
CN109145386AActive Publication Date: 2019-01-04重庆零拾工程科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
重庆零拾工程科技有限公司
Publication Date
2019-01-04

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Abstract

The invention discloses an earthquake impact response analysis method for engineering structures, which relates to the technical field of civil engineering, in particular, the method comprises the following steps: when a structure is in an elastic state, a total equation precise integration formula is adopted for recursive solution; when a plastic state is in an incremental equation precise integration formula for recursive solution; when a structure is in an elastic state, the total equation precise integration formula is adopted for recursive solution; when the elasto-plastic state is transformed, the exact moment of the transition is solved, and the first time step after the transition is solved by the total equation iteration; for the current time step, whether the structure produces contact collision or not is judged; if the collision occurs, the accurate collision time is solved, and the collision force is introduced from this time point, and the recursive calculation of the dynamic equation in the collision stage is carried out until the collision is over; the integral step size of the structure in the collision state is smaller than that in the separation state, which further improves the computational efficiency. Compared with the traditional implicit or explicit integration method, the method is unconditionally stable, computational efficiency is high, accuracy is close to the analytical solution, and the seismic collision process can be accurately simulated.
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Description

Technical field

[0001] The invention relates to the technical field of civil engineering, in particular to a seismic collision response analysis method for engineering structures. Background technique

[0002] Earthquakes are one of the most serious natural disasters faced by mankind. Because of their huge destructive power, they often cause huge loss of life and property. The earthquake resistance of engineering structures has always been valued by people. As people continue to understand the phenomena and mechanisms of earthquake damage such as bridges and buildings, the theory and practice of seismic design are also constantly deepening. Among the earthquake damage phenomena of many engineering structures, the collision phenomenon caused by the displacement of adjacent structures exceeding the reserved gap of the structure and the structural damage caused by the collision are very common.

[0003] The collision damage phenomenon of engineering structures has attracted the atte...

Claims

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