Steel-concrete composite beam bridge deck slab structure

Abstract

The utility model provides a steel-concrete composite beam bridge deck slab structure, which belongs to the technical field of bridges, and comprises a prefabricated steel-concrete composite beam which comprises a prefabricated concrete bridge deck slab, a prefabricated steel beam and a prefabricated bridge deck slab bottom die, and the flange end part of the prefabricated steel beam is connected with the prefabricated bridge deck slab bottom die; the prefabricated bridge deck slab bottom die is connected to the lower side of the prefabricated concrete bridge deck slab, and connecting steps are arranged on the two sides of the prefabricated bridge deck slab bottom die. The bridge deck slab wet joint bottom die is arranged between two adjacent prefabricated steel-concrete composite beams; the two ends of the bridge deck slab wet joint bottom die are connected with the two connecting steps on the two sides of the bridge deck slab wet joint bottom die respectively. The wet joint cast-in-place area is poured in an area defined by the two prefabricated steel-concrete composite beams and the bridge deck slab wet joint bottom die; and one end of the bridge deck slab lap joint reinforcing steel bar is embedded in the wet joint cast-in-place area. The utility model has the advantages of good integral stress performance, convenience and quickness in construction, easier guarantee of construction quality and better technical and economic benefits.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge technical field, more specifically, relate to a kind of steel-concrete composite beam bridge deck structure. BACKGROUND

[0002] Steel-concrete composite beam refers to the shear connector being arranged on the top of steel beam flange and being connected with concrete bridge deck, so that both work together in a structure form.Steel-concrete composite beam compared with pure steel beam, can give full play to the compression performance of concrete to reduce the amount of steel, it is a more economical structure form.Compared with pure concrete beam, steel-concrete composite beam can effectively reduce beam height, reduce self weight, improve the ductility of structure and increase the clearance under bridge.

[0003] Traditional steel-concrete composite beam is prefabricated steel beam and concrete bridge deck separately in factory, and the steel beam is connected with bridge deck by pouring shear connector wet joint at site.The construction technology can effectively reduce the workload at site, but the wet joint between concrete bridge decks is arranged on the top of steel beam flange, which has large negative bending moment under vehicle load, so that cracking phenomenon is easy to appear on the upper side of wet joint;In addition, when prefabricated bridge deck is installed at site, bridge deck reserved steel bars are easy to be collided with shear connector on the top of steel beam flange or another side bridge deck reserved steel bars, so that steel bars are bent and deformed, which causes difficulty in transverse connection during construction, and construction quality is difficult to guarantee.

[0004] Therefore, in order to realize convenient construction of steel-concrete composite beam bridge deck, and ensure construction quality, developing a kind of steel-concrete composite beam bridge deck structure which can be installed quickly is the current problem to be solved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of steel-concrete composite beam bridge deck structure to solve the technical problems, such as poor stress, inconvenient construction, difficult to guarantee construction quality and other technical problems existing in the prior art connection structure, and the steel-concrete composite beam bridge deck structure can be installed quickly, and has good technical and economic benefits.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a kind of steel-concrete composite beam bridge deck structure, comprising:

[0007] Prefabricated steel-concrete composite beam, which comprises prefabricated concrete bridge deck, prefabricated steel beam and prefabricated bridge deck bottom die, the flange end of the prefabricated steel beam is connected with the prefabricated bridge deck bottom die, the prefabricated bridge deck bottom die is connected on the lower side of the prefabricated concrete bridge deck, and connecting steps are arranged on both sides of the prefabricated bridge deck bottom die;Bridge deck lap steel bars are embedded in the prefabricated concrete bridge deck;Shear connector is arranged on the upper part of the flange of the prefabricated steel beam, and the shear connector is connected with the prefabricated concrete bridge deck;

[0008] The bridge deck panel wet joint bottom die is arranged between two adjacent precast steel-concrete composite beams; two ends of the bridge deck panel wet joint bottom die are connected with two connecting steps on the two sides, respectively; and

[0009] The wet joint cast-in-place area is cast in the area surrounded by the two precast steel-concrete composite beams and the bridge deck panel wet joint bottom die; one end of the bridge deck panel lap reinforcement is embedded in the wet joint cast-in-place area.

[0010] Further, the connecting step is in the form of a groove, and rubber gaskets are connected on the two sides of the bridge deck panel wet joint bottom die and clamped in the grooves of the connecting steps.

[0011] Further, a plurality of wet joint longitudinal reinforcements are embedded in the wet joint cast-in-place area, and the wet joint longitudinal reinforcements are arranged perpendicularly to the bridge deck panel lap reinforcement.

[0012] Further, the shear connector is a stud.

[0013] Further, the wet joint longitudinal reinforcement is connected with the bridge deck panel lap reinforcement by binding.

[0014] Further, the precast bridge deck panel bottom die and the bridge deck panel wet joint bottom die are both made of corrosion-resistant steel plates.

[0015] Further, the precast bridge deck panel bottom die is welded with the flange end of the precast steel beam.

[0016] Compared with the prior art, the present application has the following technical effects:

[0017] The precast steel-concrete composite beam of the steel-concrete composite beam bridge deck panel structure is a precast part that has been precast in a factory, and the precast part has connected the precast concrete bridge deck panel and the precast steel beam into an integrated whole, thereby avoiding the problem of conflict between the steel beam shear connector and the bridge deck panel lap reinforcement in the traditional construction method; meanwhile, the precast bridge deck panel bottom die arranged on the lower side of the precast concrete bridge deck panel can not only reduce the thickness of the bridge deck panel, but also serve as a bottom die for the construction of the bridge deck panel; the steel-concrete composite beam bridge deck panel structure has good overall stress performance, is convenient and fast to construct, and is easier to ensure the construction quality, thereby having good technical and economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0019] Figure 1 A structure schematic view of the prefabricated steel-concrete composite beam of the steel-concrete composite beam bridge deck structure is provided in the embodiment of the utility model;

[0020] Figure 2 A structure schematic view of the wet joint of the steel-concrete composite beam bridge deck structure is provided in the embodiment of the utility model;

[0021] Figure 3 For Figure 2 The local enlarged structure schematic view of A in the middle.

[0022] In the drawings, various reference signs represent:

[0023] 1, prefabricated concrete bridge deck, 2, prefabricated steel beam, 3, prefabricated bridge deck bottom mould, 4, bridge deck wet joint bottom mould, 5, rubber gasket, 6, wet joint cast-in-place area, 7, bridge deck lap reinforcement, 8, wet joint longitudinal reinforcement, 9, shear connector, 301, connecting step. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] The terms used in the embodiments of the utility model are only for the purpose of describing specific embodiments, and are not intended to limit the utility model. The singular forms "a", "said" and "the" used in the embodiments of the utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0028] Please refer toFigures 1-3 The utility model discloses a steel-concrete composite beam bridge deck slab structure.

[0029] In an embodiment of the utility model, the steel-concrete composite beam bridge deck slab structure of the utility model comprises: a prefabricated steel-concrete composite beam, a bridge deck slab wet joint bottom die 4 and a wet joint cast-in-place area 6. Wherein, the prefabricated steel-concrete composite beam comprises a prefabricated concrete bridge deck slab 1, a prefabricated steel beam 2 and a prefabricated bridge deck slab bottom die 3, the flange end of the prefabricated steel beam 2 is connected with the prefabricated bridge deck slab bottom die 3, the prefabricated bridge deck slab bottom die 3 is connected on the lower side of the prefabricated concrete bridge deck slab 1, and connecting steps 301 are arranged on the two sides of the prefabricated bridge deck slab bottom die 3; the bridge deck slab lap reinforcement 7 is embedded in the prefabricated concrete bridge deck slab 1, the upper part of the flange of the prefabricated steel beam 2 is provided with a shear connector 9, and the shear connector 9 is connected with the prefabricated concrete bridge deck slab 1. The bridge deck slab wet joint bottom die 4 is arranged between the two adjacent prefabricated steel-concrete composite beams, and the two ends of the bridge deck slab wet joint bottom die 4 are connected with the two connecting steps 301 on the two sides thereof. The wet joint cast-in-place area 6 is poured in the area surrounded by the two prefabricated steel-concrete composite beams and the bridge deck slab wet joint bottom die 4; one end of the bridge deck slab lap reinforcement 7 is embedded in the wet joint cast-in-place area 6.

[0030] In the embodiment, the prefabricated steel-concrete composite beam is an integral prefabricated part, which is directly prefabricated by prefabricating the prefabricated concrete bridge deck slab 1 above the flange of the prefabricated steel beam 2 in a factory, and the prefabricated concrete bridge deck slab 1 and the prefabricated steel beam 2 are connected into an integral part by the prefabricated bridge deck slab bottom die 3 arranged below the prefabricated concrete bridge deck slab 1. Specifically, the prefabricated bridge deck slab bottom die 3 is a corrosion-resistant steel plate, which is welded with the prefabricated steel beam 2, and the connecting steps 301 on the two sides of the prefabricated bridge deck slab bottom die 3 provide support for the bridge deck slab wet joint bottom die 4 on the upper side, so that the prefabricated bridge deck slab bottom die 3 serves as a support for the bridge deck slab wet joint bottom die 4.

[0031] In the embodiment, the wet joint cast-in-place area 6 is arranged between the left and right two prefabricated steel-concrete composite beams, the bottom of the wet joint cast-in-place area 6 takes the bridge deck slab wet joint bottom die 4 as a supporting bottom surface, and the left and right sides of the bridge deck slab wet joint bottom die 4 are connected with the connecting steps 301 of the prefabricated bridge deck slab bottom die 3.

[0032] The prefabricated steel-concrete composite beam of the bridge deck panel structure of the embodiment of the utility model is a prefabricated part which has been prefabricated in a factory, the prefabricated part has connected the prefabricated concrete bridge deck panel 1 and the prefabricated steel beam 2 into an integral whole, and the problem of the conflict between the steel beam shear connector 9 and the bridge deck panel lapping steel bar 7 in the traditional construction method is avoided; meanwhile, the prefabricated bridge deck panel bottom die 3 arranged at the lower side of the prefabricated concrete bridge deck panel 1 not only can reduce the thickness of the bridge deck panel, but also can be used as the bottom die for the construction of the bridge deck panel, and the overall stress performance of the bridge deck panel structure of the embodiment of the utility model is good, the construction is convenient and fast, the construction quality is easier to guarantee, and better technical and economic benefits are obtained.

[0033] Further, the connecting step 301 is in a groove shape, rubber gaskets 5 are connected on both sides of the bridge deck panel wet joint bottom die 4, and the rubber gaskets 5 are clamped in the grooves of the connecting step 301. Specifically, the rubber gaskets 5 can be pasted on the lower side of the bridge deck panel wet joint bottom die 4, by arranging the connecting step 301 in a groove shape and clamping the rubber gaskets 5 in the grooves of the connecting step 301, the wet joint cast-in-place area 6 can have better sealing performance when pouring concrete, and leakage of the poured concrete from the gap of the connecting part is prevented.

[0034] Further, a plurality of wet joint longitudinal steel bars 8 are also embedded in the wet joint cast-in-place area 6, and the wet joint longitudinal steel bars 8 are arranged perpendicularly to the bridge deck panel lapping steel bar 7, so that the overall structural strength of the wet joint cast-in-place area 6 is enhanced, and the overall stress performance is improved.

[0035] Further, the shear connector 9 is a stud, and anchoring by the stud can enhance the integrity of the connection between the prefabricated steel beam 2 and the prefabricated concrete bridge deck panel 1, and improve the overall stress performance.

[0036] Further, the wet joint longitudinal steel bars 8 are bound and connected with the bridge deck panel lapping steel bar 7, the horizontal and vertical steel bars are bound and fixed at the intersection, so that the overall structural strength of the wet joint cast-in-place area 6 is further enhanced, and the overall stress performance is improved.

[0037] Further, the prefabricated bridge deck panel bottom die 3 and the bridge deck panel wet joint bottom die 4 are both corrosion-resistant steel plates, so that the flange end of the prefabricated steel beam 2, the prefabricated bridge deck panel bottom die 3 and the bridge deck panel wet joint bottom die 4 can be connected by welding. The connecting step 301 on both sides of the prefabricated bridge deck panel bottom die 3 can be formed by bending, and the connecting step 301 formed after bending is overlapped with the end of the bridge deck panel wet joint bottom die 4.

[0038] The steel-concrete composite beam bridge deck slab structure of the embodiment can be constructed as follows: the prefabricated steel beam 2 is made in a factory, and the prefabricated bridge deck slab bottom die 3 is used as a bottom support to cast the prefabricated concrete bridge deck slab 1, the prefabricated concrete bridge deck slab 1 and the prefabricated steel beam 2 form a prefabricated steel-concrete composite beam through the shear connector 9; the prefabricated steel-concrete composite beam is hoisted and placed in place on site, and then the bridge deck slab wet joint bottom die 4 is placed on the end connecting step 301 of the prefabricated bridge deck slab bottom die 3; in order to ensure the sealing of the abovementioned bottom die connection, the rubber gasket 5 is pasted on both ends of the bridge deck slab wet joint bottom die 4 in advance; the bridge deck slab lap reinforcement 7 of the adjacent two prefabricated concrete bridge deck slabs 1 is bound in the wet joint cast-in-place area 6, and the wet joint longitudinal reinforcement 8 is arranged, and finally the micro-expansive concrete is cast to connect the adjacent prefabricated concrete bridge deck slabs 1 into a whole.

[0039] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A steel-concrete composite girder bridge deck slab structure, characterized by, The application relates to a prefabricated steel-concrete composite beam, which comprises a prefabricated concrete bridge deck, a prefabricated steel beam and a prefabricated bridge deck bottom mould, the flange end of the prefabricated steel beam is connected with the prefabricated bridge deck bottom mould, the prefabricated bridge deck bottom mould is connected at the lower side of the prefabricated concrete bridge deck, and connecting steps are arranged at the two sides of the prefabricated bridge deck bottom mould; bridge deck lap steel bars are embedded in the prefabricated concrete bridge deck; a shear connector is arranged at the upper part of the flange of the prefabricated steel beam, and the shear connector is connected with the prefabricated concrete bridge deck; a bridge deck wet joint bottom mould is arranged between two adjacent prefabricated steel-concrete composite beams; the two ends of the bridge deck wet joint bottom mould are respectively connected with the two connecting steps at the two sides; and a wet joint cast-in-place area is poured in the area surrounded by the two prefabricated steel-concrete composite beams and the bridge deck wet joint bottom mould, and one end of the bridge deck lap steel bars is embedded in the wet joint cast-in-place area. The connecting step is in the form of a groove, rubber gaskets are arranged at the two sides of the bridge deck wet joint bottom mould, and the rubber gaskets are clamped in the grooves of the connecting steps. A plurality of wet joint longitudinal steel bars are embedded in the wet joint cast-in-place area, and the wet joint longitudinal steel bars are arranged perpendicularly to the bridge deck lap steel bars. The shear connector is a stud. The wet joint longitudinal steel bars are bound with the bridge deck lap steel bars. The prefabricated bridge deck bottom mould and the bridge deck wet joint bottom mould are both made of corrosion-resistant steel plates.

2. A steel-concrete composite girder bridge deck slab structure according to claim 1, characterized in that The prefabricated bridge deck bottom mould is welded with the flange end of the prefabricated steel beam.

3. A steel-concrete composite girder bridge deck slab structure as claimed in claim 1, wherein, ​ 4. A steel-concrete composite girder bridge deck slab structure as claimed in claim 1, wherein, ​ 5. A steel-concrete composite girder bridge deck slab structure as claimed in claim 3, wherein, ​ 6. A steel-concrete composite girder bridge deck slab structure according to any one of claims 1 to 5, characterized in that ​ 7. A steel-concrete composite girder bridge deck slab structure as claimed in claim 6, wherein ​

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