Single and double-layer spherical reticulated shell with piezoelectric ceramic bar structure and bar internal force monitoring device

Abstract

Disclosed are a single and double-layer spherical reticulated shell with a piezoelectric ceramic bar structure and a bar internal force monitoring device. The spherical reticulated shell comprises a plurality of upper chords, a plurality of lower chords, a plurality of diagonal web members, a plurality of ceramic bar connectors, a plurality of bolt-sphere joints, a plurality of sliding hinge supports and a plurality of fixed hinge supports. The monitoring device comprises wireless sensors, a data receiving base station, a data analyzer and conducting wires. The single and double-layer spherical reticulated shell with the piezoelectric ceramic bar structure and the bar internal force monitoring device have the advantages that the single and double-layer spherical reticulated shell is good in seismic performance and convenient to construct, the bar internal force monitoring device is high in result accuracy, is not affected by environmental factors, is high in ageing resistance, can be used for long-term monitoring, is free of constraints of positions of bars and is high in safety, ultra-long data lines are omitted, experiments can be developed conveniently, and the like.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a piezoelectric ceramic rod structure single-layer spherical reticulated shell and a device for monitoring the internal force of the rod. Background technique [0002] With the development of large-span space structures, reticulated shell structures have been widely used, such as airport terminals, convention centers, toll stations, theaters and other buildings, all of which have application examples of reticulated shell structures. The grid structure has reasonable force, high rigidity, and light weight, which can give full play to the tensile and compressive properties of the material, reduce the adverse effects of bending moment and shear force on the material, and the shape is changeable, and the grid size can be adjusted according to the requirements of the building. , The appearance of the building is transparent and beautiful, which can effectively ...

AI Technical Summary

Problems solved by technology

However, the strain gauge or strain sensor has a short service life, and is affected by factors such as temperature and zero drift during use, so the accuracy of long-term monitoring of the internal force of the rod is poor; The vibration signal of the rod needs to be filtered, and the results will inevitably be distorted during the filtering process.

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