Fabricated corrugated web steel box-UHPC composite beam bridge and construction method thereof

A corrugated web and construction method technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., can solve the difficulty of guaranteeing web stability and shear buckling performance, increasing the cost and difficulty of quality control, and multi-chamber structures Unclear force and other problems, to achieve the effect of easy guarantee of welding quality, convenient segmental transportation, and mature construction technology

CN111206489APending Publication Date: 2020-05-29甘肃省交通规划勘察设计院股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-05-29

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Abstract

The invention relates to a fabricated corrugated web steel box-UHPC composite beam bridge and a construction method thereof, the fabricated corrugated web steel box-UHPC composite beam bridge is composed of corrugated web steel boxes and UHPC bridge deck slabs, each corrugated web steel box is of an open box-shaped structure composed of a flat steel bottom plate, corrugated steel webs and a flat steel top plate, and the adjacent corrugated web steel boxes are connected through cross beams between the boxes; the UHPC bridge deck slabs comprise in-box prefabricated UHPC bridge deck slabs, inter-box prefabricated UHPC bridge deck slabs and cantilever cast-in-place UHPC bridge deck slabs, and the adjacent prefabricated UHPC bridge deck slabs are connected through cast-in-place wet joint UHPC bridge deck slabs; and the multiple UHPC bridge decks are correspondingly installed on the multiple corrugated web steel boxes to form the assembly type corrugated web steel box-UHPC composite beam bridge. According to the fabricated corrugated web steel box-concrete composite beam bridge, the steel consumption configuration is optimized, the self-weight of the structure is further reduced, the prefabricated concrete bridge deck is adopted, the fabricated degree is further improved, the construction period is short, the standardization degree is high, remarkable economic and social benefits areachieved, and the fabricated corrugated web steel box-concrete composite beam bridge has important significance in promoting large-scale application of steel structure bridges.
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Description

technical field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to an assembled corrugated web steel box-UHPC composite girder bridge and a construction method. Background technique

[0002] Corrugated web steel box-concrete composite girder bridges are a composite structure that has been widely used in recent years. Especially in long-span, ultra-wide and complex linear bridges, corrugated web steel box concrete composite girder bridges have obvious advantages. It is more reasonable, the material performance is fully utilized, and it adopts factory manufacturing and assembly construction, which can realize fine management and batch application, has good social and economic benefits, and has broad application prospects in highways and municipal bridges.

[0003] Although traditional steel-concrete composite structure bridges solve the problems of concrete bridges such as easy cracking, poor durability, long construction pe...

Examples

Embodiment 1

[0045]The present invention provides an assembled corrugated web steel box-UHPC composite beam and its construction method. This embodiment is a simply supported beam system with a span of 40m and a width of 16.5m and its construction method. The beam height of the simply supported beam is 2000mm , consisting of two steel boxes with corrugated webs, the distance between the boxes is 7500mm, the height of the steel boxes with corrugated webs is 1750mm, and the thickness of the bridge deck is 200mm, such as Figure 1-6 shown.

[0046] The corrugated web steel box in this embodiment consists of a flat steel bottom plate 1, two corrugated steel webs 2 vertically welded on both sides of the steel bottom plate, and a flat steel top plate arranged horizontally on the top of the corrugated steel web and welded thereon. 3, the flat steel bottom plate 1, corrugated steel web 2, and flat steel top plate 3 form an open box-shaped structure, wherein the flat steel bottom plate is 3000 mm w...

Embodiment 2

[0067] The present invention provides an assembled corrugated web steel box-UHPC composite girder bridge and its construction method. This embodiment is the continuous girder system and construction method of Embodiment 1. The continuous girder is a porous 40m span, and the bridge width is 16.5m wide, girder height 2000mm, the end span and middle span are composed of two steel boxes with corrugated webs, the distance between the boxes is 7500mm, the height of the corrugated web steel boxes is 1750mm, and the thickness of the bridge deck is 200mm, such as Figure 7-9 shown.

[0068] The continuous system bridge described in this embodiment includes an end span, a mid-span corrugated web steel box and a UHPC bridge deck. Steel web 2. The flat steel top plate 3 arranged horizontally on the top of the corrugated steel web and welded on it forms an open box structure. The width of the flat steel bottom plate is 3000mm. The thickness of the bottom plate within 10m of the side is 22...