Corrugated steel plate and concrete combined web plate for square steel tube suspension bridge cable bent tower

Abstract

The invention relates to a corrugated steel plate and concrete combined web plate for a square steel tube suspension bridge cable bent tower, which is used for effectively improving the shear bearing capacity, the compression bearing capacity and the ductility of the web plate, reducing the structural earthquake response while reducing the self weight, and is convenient to construct. The web is composed of a pair of corrugated steel plates, web concrete and semi-opening shear connectors, the corrugated steel plates are arranged in the thickness direction of the web at intervals, wave crest parts and wave trough parts of the corrugated steel plates extend in the width direction of the web, and the two ends of the corrugated steel plates in the width direction are welded to the outer walls of the square steel tubes of the square steel tube concrete stand columns. The semi-open shear connecting pieces are arranged at equal intervals in the height direction of the web plate, are arranged according to the width of the web plate and are correspondingly welded and fixed on the inner walls of the pair of corrugated steel plates; a cavity between the pair of corrugated steel plates is filled with the web concrete in a pouring mode, and the web concrete is connected with the corrugated steel plates on the two sides through the semi-opening shearing force connecting pieces to form a whole structure.

Description

technical field [0001] The invention relates to bridges, in particular to a corrugated steel plate-concrete composite web used for a cable tower of a square steel tube suspension bridge. Background technique [0002] Suspension bridge pylon, as a towering structure, not only bears the vertical load of the main cable, but also bears the horizontal action of earthquake and wind load, and with the increase of span, the height of the tower increases, and its lateral stiffness and ductility are higher. Require. The traditional reinforced concrete towers have poor ductility and energy dissipation capacity, and cannot meet the seismic horizontal resistance requirements under strong earthquakes. As a structural form with better ductility, the CFST composite tower came into being. [0003] The cable tower of the CFST suspension bridge uses the vertical CFST as the column, that is, pours C80 concrete into the square steel tube to form the CFST column, and the adjacent two CFST colum...

AI Technical Summary

Problems solved by technology

[0004] Traditional reinforced concrete webs have high vertical stiffness and can withstand vertical loads, but have weak shear resistance and are prone to brittle failure

The steel plate has good ductility and strong energy dissipation capacity, so it can be used as an energy-dissipating and shock-absorbing member with excellent performance. Give full play to the energy consumption characteristics of materials

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