A long-span steel bridge prefabricated deck pavement method

A bridge deck pavement and assembly technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., can solve the problems of pouring asphalt concrete construction difficulty, construction organization complexity, construction difficulty, etc., to shorten the modulus The effect of cyclical construction cycle, uniform distribution of human resources, and improvement of construction efficiency

Active Publication Date: 2016-08-17
CCCC SECOND HIGHWAY ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantages are: poor high temperature stability and easy to form ruts; construction requires a series of special equipment, and the construction organization is relatively complicated; the temperature of the mixture during construction is very high, reaching above 240 ° C, and the impact on the bridge cannot be ignored
The main disadvantages are: the price of epoxy asphalt is high, and the key technologies are mostly controlled by the products of large foreign companies; the preparation process of epoxy asphalt mixture is relatively complicated; the time and temperature requirements in the construction of epoxy asphalt mixture are very strict, and the construction environment Strict requirements and difficult construction
Modified asphalt SMA pavement is an improved structure adopted by Germany, Japan and other countries in view of the difficulty of pouring asphalt concrete construction and relatively poor high-temperature performance. Currently, it is not widely used in steel bridge deck pavement

Method used

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  • A long-span steel bridge prefabricated deck pavement method
  • A long-span steel bridge prefabricated deck pavement method
  • A long-span steel bridge prefabricated deck pavement method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of large-span steel bridge assembly type bridge deck paving method of the present embodiment, comprises the following steps successively:

[0040] Step 1) Divide the steel bridge deck into grids to form a modular steel deck;

[0041] Step 2) processing a steel deck 1 matching each grid of the modularized steel deck;

[0042] Step 3) The steel bridge deck 1 is hoisted onto the modular steel bridge deck, and fixedly connected with the steel box girder 7 .

[0043]In this embodiment, a long-span steel bridge assembly-type bridge deck paving method divides the steel bridge deck into a grid to make the steel bridge deck modular, and adopts the steel bridge deck 1 that is processed and formed in the factory at one time, and The steel bridge deck 1 is precisely matched with the steel box girder 7, and is installed on the steel box girder 7 in blocks to form a bridge deck during paving, and is combined to form the entire bridge deck system, which has the advantages of f...

Embodiment 2

[0045] In this embodiment, a long-span steel bridge assembled bridge deck pavement method is based on the embodiment 1, and in step 2), the modified rubber 2 integrally formed on the upper surface and the peripheral side of the steel bridge deck 1 is thermally melted.

[0046] In step 3), the steel bridge deck 1 and the steel box girder are connected by high-strength bolts 5; as a preferred solution, each steel bridge deck 1 and the steel box girder 7 are connected by four high-strength bolts 5 Fixed connections are distributed on the steel bridge deck 1 in a rectangular shape. The steel bridge deck 1 is directly connected with the steel box girder 7 by high-strength bolts 5, which is convenient for installation and construction.

[0047] A rubber pad 4 is arranged between the steel bridge deck 1 and the steel box girder 7 . A high-performance rubber pad 4 is arranged between the steel bridge deck 1 and the steel box girder 7, which can reduce noise and friction between the s...

Embodiment 3

[0050] The method for laying a prefabricated deck of a long-span steel bridge in this embodiment is based on Embodiments 1 and 2. In step 1), the steel deck is divided into modular rectangular grids.

[0051] In this embodiment, the steel bridge deck 1 in step 2) is rectangular.

[0052] That is to say, the assembled steel bridge structure adopted in this example is a modular "hot-melt modified rubber 2 + steel bridge deck 1", and its specific structural diagram is as follows figure 1 , figure 2 and image 3 shown. The steel bridge deck 1 adopts industrialized and standardized production, and can be precisely matched with the steel box girder 7 on the production line, and the supporting production ensures the accuracy and quality of installation. The hot-melt modified rubber 2 is set on the steel bridge deck 1, and it is integrally formed with the steel bridge deck 1 in the factory, which can increase the ride comfort, solve the problem of driving stability and comfort, se...

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Abstract

The invention belongs to the technical field of pavement and maintenance of roads and bridges, and discloses a method for paving an assembled bridge deck of a long-span steel bridge. The step of surface; the step of processing the steel bridge deck matched with each grid of the modularized steel bridge deck; the step of hoisting the steel bridge deck on the modularized steel bridge deck and fixedly connecting with the steel box girder. The pavement method of the present invention has the advantages of factory production and molding, excellent quality and high precision, can avoid the defects of traditional steel bridge deck pavement, is simple and easy to implement, improves the efficiency of modular construction, shortens the cycle, and distributes human resources evenly. There is no cross-interaction in the process, and the proposal of the assembled steel bridge structure solves the integrity of the bridge deck, the stability and comfort of driving after block installation, the sealing of the joints, and the coordination with the deformation and stress of the steel box girder structure, etc. series of questions.

Description

technical field [0001] The invention belongs to the technical field of paving and maintenance of roads and bridges, and in particular relates to a method for paving an assembled bridge deck of a long-span steel bridge. Background technique [0002] The deck pavement of steel box girder bridges is generally composed of antirust layer, adhesive layer, and asphalt mixture pavement layer, which are directly paved on the steel box girder roof, with a total thickness of 35~80mm. Due to the particularity of the use conditions, construction technology, quality control and requirements of steel box girder deck pavement, there are high requirements for its strength, fatigue resistance, rutting resistance, shear resistance and deformation coordination. At present, there is no universally effective design theory and method for steel bridge deck pavement. [0003] The construction of long-span steel girder cable-stayed bridges and suspension bridges in foreign countries has a long histo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D19/12
Inventor 李进张志荣李松廖立勋
Owner CCCC SECOND HIGHWAY ENG CO LTD
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