Old building structure seismic hardening method adopting static elastic-plastic analysis technology

Abstract

The invention relates to the technical field of building engineering, in particular to an old building structure seismic hardening method adopting the static elastic-plastic analysis technology. The method comprises the following steps that 1, a 3D scanning system is utilized for carrying out 3D scanning on a target old building, and three-dimensional entity model data is adopted; 2, the computer auxiliary technology is used for setting up a three-dimensional digital model of the old building; 3, a static elastic-plastic analysis mode is adopted for analysis, and the capacity curve of the old building structure is obtained; 4, weak portion and weak component information of the old building structure is obtained according to the capacity curve; 5, the old building structure is subjected to reinforcing design according to the weak portion and weak component information. A frame structural system is subjected to seismic performance analysis based on static elastic-plastic analysis, a weak section and a weak component of the structure are found, the structure is subjected to reinforcing design again, the performance of the structure obtained after reinforcing design is carried out again is greatly improved, seismic hardening treatment can be effectively carried out on the old building, and the seismic reliability is high.

Description

[0001] Technical field: [0002] The invention relates to the technical field of construction engineering, in particular to an anti-seismic reinforcement method for old building structures using static elastic-plastic analysis technology. [0003] Background technique: [0004] The starting point of the static elastoplastic analysis method is to simulate the response of the structure under dynamic conditions through static loading. The static elastoplastic analysis avoids the difficulty of wave selection in the time history analysis. The elastic-plastic analysis of the structure under static monotonic loading, specifically, is to apply a lateral force on the structural analysis model to simulate the horizontal inertial force of the earthquake in a certain way during the static elastic-plastic analysis of the structure, and gradually The level increases monotonously. In the loading project, according to the cracking, yielding or deformation of the components, the lateral stiffne...

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Problems solved by technology

[0005] The occurrence of earthquakes is an accidental event, and the occurrence of major earthquakes is a disaster event. Since there are not many earthquake data recorded at present, and the factors such as earthquake occurrence and propagation have not been fully studied, especially the impact of rare earthquakes on the performance of engineering structures The understanding is still insufficient, and the uncertainty of the impact of earthquake action on engineering structures is extremely large

The setting of seismic safety assessment intensity is uncertain and there are safety risks, so there is no reliable method for seismic reinforcement of building structures