Steel-concrete combination deck plate and construction method thereof

A construction method and technology of combined bridges, applied in bridges, bridge parts, bridge construction and other directions, can solve the problems of difficult construction, heavy weight, long construction period, etc., and achieve short construction method period, weight reduction, and short construction period. Effect

Active Publication Date: 2017-05-10
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a steel-concrete composite bridge deck for the existing concrete beams and reinforced concrete bridge decks that exi

Method used

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  • Steel-concrete combination deck plate and construction method thereof
  • Steel-concrete combination deck plate and construction method thereof
  • Steel-concrete combination deck plate and construction method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0048] Example 1

[0049] Such as Figure 1-6 As shown, a steel-concrete composite bridge deck includes:

[0050] The bottom steel plate 2 is arranged on a steel lattice beam 1 composed of longitudinal beams and transverse beams. The bottom steel plate 2 located in the supporting area 7 of the steel lattice beam 1 has a curved shape adapted to the supporting outer wall. The thickness of the bottom steel plate 2 is 8-10mm;

[0051] Several shear plates 3 are vertically connected to the bottom steel plate 2;

[0052] The concrete layer 4 contains a steel mesh 5 passing through the shear plate 3, and the concrete layer 4 is poured on the bottom steel plate 2 and covers the shear plate 3 and the steel mesh 5;

[0053] The thickness d of the composite bridge deck is 10-15 cm.

[0054] All the above-mentioned shear plates 3 are provided with a number of holes 31, and the concrete layer 4 contains transverse steel bars 51 which can pass through the shear plates 3 transversely. By arranging h...

Example Embodiment

[0069] Example 2

[0070] The present invention also provides a construction method of steel-concrete composite bridge deck, including the following steps:

[0071] Step 1. Weld the shear plates 3. Weld all the shear plates 3 on the bottom steel plate 2 vertically in the factory, so that all the shear plates 3 are arranged at equal distances parallel to each other along the longitudinal direction of the lattice beam;

[0072] Step 2. Weld the bottom steel plate 2 and transport the bottom steel plate 2 to the construction site. Lay the bottom steel plate 2 on the steel lattice beam 1 and weld and fix it on the cross beam or longitudinal beam. It is located in the supporting area of ​​the steel lattice beam 1 at 7 hours , The bottom steel plate 2 is bent and fitted to the outer wall of the supporting area 7 and welded and fixed;

[0073] Step 3. Pouring the concrete layer 4, binding the steel mesh 5 between the shear plates 3, and the transverse steel bars 51 of the steel mesh 5 pass th...

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Abstract

The invention relates to a steel-concrete combination deck plate and a construction method thereof, wherein the steel-concrete combination deck plate comprises: bottom steel plates arranged on steel girders, wherein the bottom steel plates in the bearing regions of the steel girders are bent in shape, and the bottom steel plates are 8-10 mm in thickness; a plurality of shear plates vertically connected to the bottom steel plates; a concrete tier including reinforcement fabric penetrating through the shear plates, wherein the concrete tier is cast to the bottom steel plates, and the combination deck plate is 10-15 cm in thickness. The steel-concrete combination deck plate uses the bottom steel plates as stress-bearing parts as well as a formwork for a cast-in-place desk concrete tier, and steps of mounting and releasing concrete formwork are omitted; the shear plates serve as stiffeners for the bottom steel plates, good combination of the bottom steel plates with the concrete tier can be guaranteed, and cracking of the concrete tier is prevented; the deck thickness is controlled to 10-15 cm and is reduced, the weight is 25% and above lower than that of a composite beam deck system, dead load is reduced, crossing ability, structural strength and durability of the main structure are improved, construction input is reduced, and the efficiency of a construction method is high.

Description

technical field [0001] The invention relates to the technical field of composite structure bridges, in particular to a steel-concrete composite bridge deck and a construction method. Background technique [0002] In the design of modern long-span bridges, the composition of the deck system is mainly divided into three types: concrete deck, pure steel deck and laminated beam deck, specifically: [0003] 1. The concrete bridge deck system is composed of concrete beams and concrete panels. Because the amount of concrete used is large, the weight of the concrete panels is relatively large, resulting in a relatively large overall dead load of the bridge, which makes bridge installation difficult and affects the overall economy of the bridge. sex; [0004] 2. Pure steel deck system, that is, steel girders and steel bridge decks are used. Although the steel deck deck is light in weight, it uses a lot of steel and is expensive; common U-rib welds are easy to crack and difficult to ...

Claims

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Application Information

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IPC IPC(8): E01D19/12E01D21/00
CPCE01D19/125E01D21/00
Inventor 牟廷敏范碧琨梁健王潇碧周孝军林小军王戈孙才志康玲古锐
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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