Steel and wood combined box girder

Abstract

The invention provides a steel and wood combined box girder which comprises a CLT bridge deck slab, a steel and wood combined box girder block, steel webs, CLT edge webs, screws, H-shaped steel, flange plates and bolts. Bolt holes are formed in the CLT bridge deck slab, the H-shaped steel and the flange plates, the CLT bridge deck slab and the flange plates are in lap joint with the internal portions of H-shaped steel grooves and are anchored through the bolts; the CLT bridge deck slab and the CLT edge webs are connected through the screws, the CLT edge webs and the steel and wood combined boxgirder block are bonded through E1-level phenolic glue, the lower portion of the CLT bridge deck slab and the upper portion of the steel and wood combined box girder block are bonded through the E1-level phenolic glue, and the steel webs and the steel and wood combined box girder block are connected together in a welded mode; and the steel and wood combined box girder block is composed of multiple specially-shaped steel plates and thin, long and narrow beams, and the two ends of each specially-shaped steel plate are bonded to the edges of the up-down-staggered thin, long and narrow beams through the E1-level phenolic glue. The single-box multi-room space box girder is composed of the CLT bridge deck slab, the steel and wood combined box girder block, the steel webs and the CLT edge webs,the advantages of steel and wood combination are fully used, and the box girder is good in flexural performance and torsional performance and suitable for large-span light traffic bridges for pedestrians, motorcycles and the like.

Description

technical field [0001] The invention relates to a steel-wood composite box girder, which is applied to various long-span light bridges and belongs to the field of civil engineering. Background technique [0002] Wooden structure buildings and steel-wood structure buildings have been widely popularized and developed in Europe, America, Japan and other countries. However, among the existing wooden structures, steel-wood composite structures are rarely used in light bridges. The cross-section of traditional light bridge components The form is single, mostly T-shaped cross-section beams or rectangular cross-section beams, with small spans, suitable for small pedestrian bridges. Box girder has good bending resistance, shear resistance and torsion resistance. Steel has the advantages of high strength and good ductility. Wood has the characteristics of good tensile performance, green environmental protection, and strong affinity. It is suitable for building pedestrian bridges. CLT ...

AI Technical Summary

Problems solved by technology

However, this invention not only enhanced the anti-seismic performance of the structure, but also greatly increased the difficulty of construction and the long construction time, resulting in more consumables, increased construction costs, and not clean enough

Images