Floor-type slant-legged steel truss bracket of lower transverse beam of large-span cable tower

Abstract

The invention discloses a floor-type slant-legged steel truss bracket of a lower transverse beam of a large-span cable tower. The steel truss bracket is mounted on bottom bearing platforms of tower columns on two sides of the lower transverse beam of the cable tower. The steel truss bracket is characterized by comprising a steel truss, slant-legged brackets in bilateral symmetry arrangement, and an anti-introversion lateral bracing connected with the slant-legged brackets on the two sides, wherein the bottom of each slant-legged bracket is propped against the bottom bearing platform of the tower column on the corresponding side; the steel truss is supported at the tops of the slant-legged brackets. The feasible floor-type slant-legged steel truss bracket of the lower transverse beam of the large-span cable tower, provided by the invention, aims to solve the problems existing in a conventional construction technology of a lower transverse beam. The bracket directly utilizes conventional tower columns and conventional bearing platforms as a base, and omits the investment of facilities, such as temporary buttresses in the lower transverse beam span, and the bracket has the advantages of being large in bearing capacity, small in overall deformation, stable in structure, convenient to mount and demount, and sufficient in performance application of rods.

Description

technical field [0001] The invention relates to a floor-standing inclined-leg steel truss support for the lower beam of a large-span cable tower. Background technique [0002] With the continuous improvement of modern bridge construction technology, the maturity of finite element theory, and the continuous improvement of design concepts and construction equipment, in order to relieve urban traffic pressure and enhance the landscape effect of bridges, modern bridges are moving towards large-span, ultra-wide, Lightweight direction. Cable-stayed bridges and suspension bridges have been more and more used in bridge construction because of their strong spanning capacity, ultra-wide deck and beautiful architectural shapes. The lower beam, which is the main load-bearing structure of the above-mentioned bridge, presents the characteristics of width, height and weight with the continuous increase of the bridge deck size. For example, the Minpu Bridge is the first double-deck cable-...

AI Technical Summary

Problems solved by technology

[0004]1. The construction period of the temporary buttress is long. After the lower beam is poured, uneven settlement may occur between different pile caps, which will affect the construction quality

[0005], large investment and high cost for temporary structure construction

[0006] After the completion of the construction of the lower beam, affected by the clearance of the building, it is very difficult to remove the temporary pile cap

Images