Building structure seismic damage assessment system and method based on wireless sensor network

Abstract

The invention discloses a building structure seismic damage assessment system and a method based on a wireless sensor network. The system mainly comprises a plurality of wireless sensor nodes and a control computer center which are wirelessly connected. With the help of the characteristics of low cost and self-organization of the wireless sensor network technique, the building structure seismic damage assessment system based on the wireless sensor network is constructed, and the goals of zero line arrangement and long-term all-weather working are really realized from the aspect of functions. By using detected acceleration and angular velocity responses for conducting numerical analysis and calculation to obtain the velocity response and the inter-story displacement response of a structure, seismic damage assessment cannot only be conducted to the overall structure and structural members through inter-story displacement, but also can be conducted to nonstructural members such as velocity-sensitive or acceleration-sensitive members through the velocity and acceleration responses of the structure, and the performance-based seismic damage assessment requirement of the building structure is really met.

Description

technical field [0001] The invention relates to the field of earthquake disaster assessment of construction engineering and the technical field of wireless sensor networks, in particular to an earthquake damage assessment system for building structures based on wireless sensor networks. Background technique [0002] Seismic damage assessment of existing buildings is one of the important tasks after strong earthquakes. Earthquake damage assessment reports for various types of buildings are the most primitive engineering basis for rationally determining post-disaster relief programs and post-disaster reconstruction policies. Among them, it is particularly important to conduct rapid and accurate real-time earthquake damage assessments for important buildings such as hospitals, shelters (such as large-span stadiums) and schools after the earthquake, in order to better realize the medical assistance of the earthquake wounded and the safety of the affected people. Temporary reset...

AI Technical Summary

Problems solved by technology

Restricted by actual conditions, this evaluation method has the following limitations: The on-site investigation of the disaster-affected buildings requires the participation of professionals in the field of structural engineering and earthquake engineering. At the same time, the naked eye inspection can only observe the surface damage of the structure, and the internal damage of the structure needs to be detected with the help of instruments. Therefore, a large number of personnel and instruments are invested. Indispensable as a means of assessing

However, the determination of the structural parameters of existing buildings requires a lot of research work, and the computer modeling and analysis of single structures also requires a lot of manpower and material resources. Accurate input data of earthquake motion can only be obtained after data processing by earthquake workers. The above reasons also make it very difficult to obtain structural seismic response through seismic analysis and then conduct post-disaster seismic damage assessment of existing buildings, especially instant assessment.

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