CN-115701466-B - Steel bridge deck pavement structure and construction method thereof

CN115701466BCN 115701466 BCN115701466 BCN 115701466BCN-115701466-B

Abstract

The invention discloses a steel bridge deck pavement structure and a construction method thereof. The method comprises the following steps of S1, preparing at least two steel bridge decks, S2, sequentially performing construction procedures of (1) performing sand blasting rust removal treatment on the surfaces of the steel bridge decks and welding shear nails, (2) paving transverse steel bars and longitudinal steel bars to form a grid structure layer which is staggered with each other, S3, arranging reinforcing steel bars and tooth mouth type end molds at joints of the at least two steel bridge decks, S4, respectively pouring the at least two steel bridge decks to form an ultra-high performance concrete pavement layer, and S5, paving an abrasion layer on the ultra-high performance concrete pavement layer. The invention can improve the compression resistance, the shear strength and the fatigue resistance of the ultra-high performance concrete pavement layer, and ensure that the ultra-high performance concrete pavement layer does not flow and accept distribution in the pouring process so as to ensure the thickness of the ultra-high performance concrete pavement layer.

Inventors

ZHAO YUFU
FU JUN
BAO LIANFAN
Li Pengsen
WU WENJIE
CHEN CHEN
CAI XIAOYING
CHEN JIE

Assignees

宏润建设集团股份有限公司

Dates

Publication Date: 20260505
Application Date: 20210802

Claims (10)

1. The construction method of the steel bridge deck pavement structure is characterized by comprising the following steps of: s1, preparing at least two steel bridge decks; s2, sequentially performing the following construction procedures on each steel bridge deck, namely (1) performing sand blasting rust removal treatment on the surface of the steel bridge deck and welding shear nails, and (2) paving transverse steel bars and longitudinal steel bars on the steel bridge deck to form a grid structure layer which is staggered with each other; S3, arranging reinforcing steel bars and tooth mouth type end molds at joints of the at least two steel bridge decks, wherein the reinforcing steel bars are arranged parallel to the longitudinal steel bars and staggered with the longitudinal steel bars, or the reinforcing steel bars are arranged parallel to the transverse steel bars and staggered with the transverse steel bars, and positioning bayonets of the tooth mouth type end molds are aligned to the transverse steel bars, the longitudinal steel bars and the reinforcing steel bars for installation, so that the tooth mouth type end molds are sleeved on the transverse steel bars, the longitudinal steel bars and the reinforcing steel bars through the positioning bayonets, so that the tooth mouth type end molds do not deviate in the pouring process, and the tooth mouth type end molds can be conveniently taken and placed at any time; S4, respectively pouring the at least two steel bridge decks to form an ultra-high performance concrete pavement layer, wherein a first pouring layer is formed on the first side of a tooth mouth end die, after the first pouring layer is finally set, the tooth mouth end die is taken down, the rest part is poured to form a second pouring layer, and the first pouring layer and the second pouring layer form the ultra-high performance concrete pavement layer; And S5, paving a wearing layer on the ultra-high performance concrete paving layer.
2. The construction method according to claim 1, wherein the step S2 comprises the steps of paving longitudinal steel bars first and paving transverse steel bars second, wherein the transverse steel bars are paved at equal intervals, the interval between the transverse steel bars is 100mm, the longitudinal steel bars are paved at equal intervals, and the interval between the longitudinal steel bars is 100mm.
3. The method of claim 2, further comprising connecting the transverse and longitudinal bars in wire or wire tie with the ends of the wires or wires facing the steel bridge deck.
4. The construction method according to claim 1, wherein the tooth form end form includes a plurality of convex and concave shapes alternately arranged in a direction of the lateral reinforcing bar, the convex and concave shapes having the same lateral length and longitudinal length, and wherein the reinforcing bar is provided in both the convex and concave shapes.
5. The construction method according to claim 1, wherein the tooth mouth type end form comprises a plurality of convex and concave shapes which are alternately arranged along the direction of the transverse reinforcing steel bars, the transverse length and the longitudinal length of the convex and the concave shapes are the same, and wherein the reinforcing steel bars are arranged only in the convex shape, and further, positioning bayonets which are matched with the diameters of the longitudinal reinforcing steel bars and the reinforcing steel bars are arranged in the transverse direction of the convex shape, and positioning bayonets which are matched with the diameters of the longitudinal reinforcing steel bars are arranged only in the transverse direction of the concave shape.
6. The construction method according to claim 1, wherein the tooth mouth type end form comprises a plurality of convex and concave shapes which are alternately arranged along the direction of the transverse reinforcing steel bars, the transverse length and the longitudinal length of the convex and the concave shapes are the same, and wherein the reinforcing steel bars are arranged in the concave shapes only, and further, the transverse direction of the convex shapes is provided with positioning bayonets which are matched with the diameter of the longitudinal reinforcing steel bars only, and the transverse direction of the concave shapes is provided with positioning bayonets which are matched with the diameter of the longitudinal reinforcing steel bars and the diameter of the reinforcing steel bars.
7. The construction method according to claim 1, wherein the step S2 comprises the step of brushing the steel bridge deck welded with shear pins in the step (1) with an anticorrosive coating after the step (1) is completed and before the step (2) is performed.
8. The construction method according to claim 1, wherein the step S5 includes: s51, performing shot blasting treatment on the ultra-high performance concrete pavement layer; S52, scraping resin asphalt EBCL on the ultra-high performance concrete pavement layer after shot blasting treatment, and then spreading broken stone to form a waterproof anti-slip bonding layer; S53, coating RA resin asphalt cement on the waterproof anti-slip bonding layer to form an RA resin asphalt bonding layer, paving a resin asphalt mixture, curing and blasting to form a resin asphalt mixture layer; and S54, finally coating EBCL cementing materials, spreading broken stone, and curing to form a waterproof and anti-slip cover layer to form the wearing layer.
9. The steel bridge deck pavement structure is characterized by comprising at least two steel bridge decks, wherein transverse steel bars and longitudinal steel bars are arranged on the at least two steel bridge decks, the transverse steel bars and the longitudinal steel bars are mutually staggered to form a grid structure layer, reinforcing steel bars are arranged at joints of the at least two steel bridge decks, the reinforcing steel bars are parallel to the longitudinal steel bars and are staggered with the longitudinal steel bars, or the reinforcing steel bars are parallel to the transverse steel bars and are staggered with the transverse steel bars, an ultra-high performance concrete pavement layer is paved on the at least two steel bridge decks, the ultra-high performance concrete pavement layer comprises a protection layer, the longitudinal steel bars and the reinforcing steel bars are covered by the ultra-high performance concrete pavement layer, a wearing layer is paved on the ultra-high performance concrete pavement layer, wherein in the construction process of the steel bridge deck pavement structure, the reinforcing steel bars are required to be arranged in parallel to the longitudinal steel bars, or the reinforcing steel bars are staggered with the longitudinal steel bars, the positioning bayonets of the tooth mouth type end dies are aligned to the transverse steel bars, the longitudinal steel bars and the reinforcing steel bars are arranged in a staggered mode, and the tooth mouth type end dies can be conveniently placed at any time, and the tooth mouth type end dies can be conveniently placed on the reinforcing steel bar die, and the reinforcing steel bar can be conveniently placed at any time, and the tooth mouth type end dies are not placed at any time, and the tooth mouth type end die position can be conveniently placed; and in the construction process of the steel bridge deck pavement structure, a first casting layer is formed on the first side of the tooth mouth type end die, after the first casting layer is finally solidified, the tooth mouth type end die is taken down, a second casting layer is formed on the rest of casting, and the first casting layer and the second casting layer form the ultra-high performance concrete pavement layer.
10. The steel bridge deck pavement structure of claim 9, wherein the protective layer has a thickness of not less than 15mm.

Description

Steel bridge deck pavement structure and construction method thereof Technical Field The invention relates to the technical field of bridge construction engineering, in particular to a steel bridge deck pavement structure and a construction method thereof. Background Along with the rapid development of traffic industry in China, bridge construction also plays a wave in China. As the number of bridges with large span increases, steel bridges are widely used. The steel bridge deck system has many advantages, such as light dead weight, and can be prefabricated and then hoisted on site, thereby reducing engineering period and the like. In the steel bridge deck system, the concrete pavement layer is particularly important, and compared with common concrete, the ultra-high performance concrete adopted in the combined bridge deck structure has better compression resistance and tensile resistance, however, the connecting seam of the steel bridge deck structure bears repeated vehicle load, the durability and fatigue resistance of the bridge deck structure are difficult to ensure only by means of the ultra-high performance concrete, the problem of cracking of the steel bridge combined bridge deck structure can be caused, and huge economic cost is brought to maintenance and repair work of the bridge deck structure. In addition, the concrete pavement layer which is usually arranged on the steel bridge deck cannot be too thick, so that the constant weight of the bridge is not excessively increased, and the bearing capacity of the bridge is not affected. Therefore, it is important to strengthen the structural stress frame of the steel bridge deck pavement and ensure the thickness of the concrete pavement layer, and the important subject is presented to the person skilled in the art. Disclosure of Invention In order to solve the problems, the invention provides the steel bridge deck pavement structure and the construction method thereof, which can improve the compression resistance, the shear strength and the fatigue resistance of the ultra-high performance concrete pavement layer and ensure that the ultra-high performance concrete pavement layer does not flow in the pouring process so as to ensure the thickness of the ultra-high performance concrete pavement layer. In order to achieve the above purpose, the invention provides a construction method of a steel bridge deck pavement structure, which comprises the following steps: s1, preparing at least two steel bridge decks; S2, sequentially performing the following construction procedures on each steel bridge deck, namely (1) performing sand blasting rust removal treatment on the surface of the steel bridge deck and welding shear nails; s3, arranging reinforcing steel bars and tooth mouth type end dies at joints of the at least two steel bridge decks; s4, pouring the at least two steel bridge decks respectively to form an ultra-high performance concrete pavement layer; And S5, paving a wearing layer on the ultra-high performance concrete paving layer. Further, the step S2 comprises the steps of firstly paving longitudinal steel bars and then paving transverse steel bars, wherein the transverse steel bars are paved at equal intervals, the interval between the transverse steel bars is 100mm, the longitudinal steel bars are paved at equal intervals, and the interval between the longitudinal steel bars is 100mm. Further, the specifications of the transverse steel bars and the longitudinal steel bars areOf which is preferably Further, the transverse steel bars and the longitudinal steel bars are connected in a steel wire or iron wire binding mode, and the tail ends of the steel wires or the iron wires face the steel bridge deck. Further, the step S3 includes arranging the reinforcing steel bars parallel to the longitudinal steel bars, and staggering the reinforcing steel bars and the longitudinal steel bars. Further, the reinforcing steel bars are arranged at equal intervals, and the specification of the reinforcing steel bars is that Further, the step S3 includes that the tooth mouth type end mold is provided with positioning bayonets matched with diameters of the transverse reinforcing steel bars, the longitudinal reinforcing steel bars and the reinforcing steel bars, and the positioning bayonets of the tooth mouth type end mold are aligned with the transverse reinforcing steel bars, the longitudinal reinforcing steel bars and the reinforcing steel bars for installation, so that the tooth mouth type end mold is sleeved on the transverse reinforcing steel bars, the longitudinal reinforcing steel bars and the reinforcing steel bars through the positioning bayonets. Further, the step S4 includes that a first pouring layer is formed on the first side of the tooth mouth end die, after the first pouring layer is finally solidified, the tooth mouth end die is taken down, a second pouring layer is formed on the rest of the pouring, the thickness of the first pouring layer is the same