Numerical value assessment method of anti-collapse capability of existing buildings

Abstract

The invention discloses a numerical value assessment method of the anti-collapse capability of existing buildings. The method is characterized by comprising the steps of adopting a numerical model to simulate the large deformation, large displacement and mutual collision of the existing buildings in the collapsing process, analyzing and judging whether the destroy of key components causes continuous collapse, and providing numerical value basis for actual efficacy and the safety assessment on key parts and weak parts after authentication and strengthening; the numerical value assessment comprises the acquisition of structural information, the building of the numerical model, the determination of loading station and the analysis and assessment of anti-collapse capacity. Compared with the prior art, the method provided by the invention is high in accuracy for judging whether the damage of the important components causes the continuous collapse, simple in analysis process and high in working efficiency, specially, the time and scope needed for the collapse can be given for the anticipation of continuous collapse caused by the damage of the important components, and the full and reliable reference can be provided for the time limit for personnel evacuating.

Description

technical field [0001] The invention relates to the technical field of structure anti-collapse design, in particular to a numerical evaluation method for the anti-collapse ability of existing structures. Background technique [0002] The safety of structures is the primary problem of structural design, and the collapse of buildings has always been the main source of casualties and equipment damage. With the deepening of urban modernization, there are more and more high-rise office buildings and landmark buildings, and their safety and collapse resistance are also highly valued. Compared with newly built houses, once the existing buildings that have been put into use collapse, it will cause more serious loss of life and property, especially some old residential buildings. For example, on April 4, 2014, nearly one and a half units of a residential building in Fenghua collapsed in a "crushed" manner, causing seven people to be buried, and one of them died after rescue efforts ...

AI Technical Summary

Problems solved by technology

Since the collapse of the structure is often accompanied by strong nonlinear problems such as large deformation, large displacement, and collision, the reliability of the analysis method using numerical simulation and structural design software is low, and it cannot provide sufficient information for the design of the collapse resistance of existing structures. , reliable parameters

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