Manufacturing method for composite profile steel-concrete combined beam, combined beam and monitoring device

Abstract

The invention discloses a manufacturing method for a composite profile steel-concrete combined beam, the combined beam and a monitoring device. The composite profile steel-concrete combined beam comprises a reactive powder concrete (RPC) flange plate. The lower surface of the RPC flange plate is fixedly connected with an I-steel beam through shear connecting pieces. A plurality of grooves are formed in the central line of the upper surface of the upper flange of the I-steel beam in the span direction. A piezoelectric ceramic piece is fixed into each groove. Piezoelectric smart aggregate is embedded into the portions, on the two sides of the shear connecting pieces, of the RPC flange plate, and the lower surface of the aggregate smart aggregate is flush with the lower surface of the RPC flange plate. By adoption of the manufacturing method for the composite profile steel-concrete combined beam, the combined beam and the monitoring device, the span of the profile steel-concrete combined beam is increased, mechanical performance of the profile steel-concrete combined beam is improved, and therefore the profile steel-concrete combined beam can be used for the newly-built construction of a civil engineering structure. The monitoring device is high in sensitivity, rapid in response, easy and convenient to operate, low in price and capable of being applied to slipping monitoring of the composite profile steel-concrete combined beam.

Description

technical field [0001] The invention relates to the field of girder bridge monitoring in the fields of civil engineering, transportation, etc., in particular to a preparation method of a composite steel-concrete composite beam, a composite beam and a monitoring device. Background technique [0002] Steel-concrete composite beam is a new type of structure developed on the basis of steel structure and concrete structure. It mainly resists the lifting and relative slippage at the interface between the steel beam and the concrete flange plate by setting shear connectors (bolts, channel steel, bending bars, etc.), making it a whole work together. The steel-concrete composite beam has strong bearing capacity, light weight (under the same strength and rigidity, the section of the composite beam is smaller than that of the non-composite beam, and the beam height can be reduced by about 10%), and the material is saved (compared to ordinary reinforced concrete The structure saves ab...

AI Technical Summary

Problems solved by technology

However, these technologies are expensive, the monitoring process is complicated, and the requirements for the experience and skills of the monitoring personnel are relatively high.

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