Fabricated steel-concrete composite beam bridge

Abstract

The utility model discloses an assembly type steel-concrete composite beam bridge, and relates to the technical field of steel-concrete composite beam bridges, the assembly type steel-concrete composite beam bridge comprises a plurality of shear connecting pieces, each shear connecting piece comprises a mounting plate seat, high-strength screws are fixed on the left edge and the right edge of the lower side of each mounting plate seat at equal intervals, and a concrete block is fixed in the middle of the upper side of each mounting plate seat; the shearing force connecting pieces are mounted at the tops of the I-shaped steel beams, and first mounting holes are formed in the positions, corresponding to the high-strength screws, of the tops of the I-shaped steel beams; and the multiple prefabricated concrete bridge deck slabs are sequentially laid on the I-shaped steel beams from front to back. The whole shearing force connecting piece can be prefabricated in a factory-like mode, construction quality can be guaranteed more easily, the shearing force connecting piece and the I-shaped steel beam are connected through the high-strength screw and the first high-strength nut, the shearing force connecting piece can be installed on the I-shaped steel beam more rapidly and conveniently, and construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel concrete composite beam bridge technical field, concretely relates to a kind of fabricated steel concrete composite beam bridge. BACKGROUND

[0002] Steel concrete composite bridge is by steel and concrete two materials through connecting piece composition whole, is the bridge that can be common stress, coordinated deformation;It gives full play to the characteristics of concrete high compressive strength, good stability;Steel structure high tensile strength, light weight, with high bearing capacity, stiffness ductility, good seismic performance, relatively low cost, the advantage of convenient construction.

[0003] At present, the shear connector between the prefabricated concrete bridge deck and the I-beam is widely used. The bolt connector is widely used, the single bolt bearing capacity is low, so it is necessary to weld dense bolts along the length direction of the steel girder, which brings great inconvenience to the installation of the prefabricated concrete slab, and the welding process of the bolt is very high, and the shear slot needs to be cast in situ, the cast-in-situ concrete needs to increase the construction time, and the quality of the site slot maintenance is not easy to guarantee. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of fabricated steel concrete composite beam bridge to solve the problems raised in the above background.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a kind of fabricated steel concrete composite beam bridge, comprising:

[0006] A plurality of shear connectors, the shear connector includes a mounting plate seat, the lower side of the mounting plate seat is fixed with high-strength bolts at equal intervals, the high-strength bolts are threadedly connected with first high-strength nuts, and the upper side of the mounting plate seat is fixed with a concrete block in the middle;

[0007] A plurality of I-beams, the shear connector is installed on the top of the I-beam, the first mounting hole is formed in the position corresponding to the high-strength bolt on the top of the I-beam, a plurality of second mounting holes are formed in the left and right edges of the upper wall of the I-beam, and the first high-strength bolt is nested in the second mounting hole;

[0008] A plurality of prefabricated concrete bridge decks, a plurality of prefabricated concrete bridge decks are sequentially laid on the I-beam from front to back, the prefabricated concrete bridge deck includes a bridge deck body, the bottom of the bridge deck body is embedded with a high-strength threaded pipe sleeve corresponding to the position of the second mounting hole, the bottom of the bridge deck body is provided with a receiving groove corresponding to the position of the shear connector, the upper side of the receiving groove is provided with a positioning groove, and the front and rear ends of the bridge deck body are fixed with rigid connecting plate pieces.

[0009] Preferably, the lower end of the high-strength screw rod penetrates through the corresponding first mounting hole, and the first high-strength nut is located at the lower end of the first mounting hole.

[0010] Preferably, the upper end of the first high-strength bolt is screwed into the corresponding high-strength threaded sleeve, so that the connection between the prefabricated concrete bridge deck and the I-beam is simple and firm.

[0011] Preferably, the upper end of the positioning groove extends to the upper side of the bridge deck body, the accommodating groove matches the mounting plate seat, and the positioning groove matches the concrete block.

[0012] Preferably, the inside of the concrete block is inlaid with a cluster of shear pins, the lower end of the cluster of shear pins is fixedly connected with the mounting plate seat, the structural strength of the concrete block is improved, and the connection strength between the concrete block and the mounting plate seat is improved.

[0013] Preferably, the bottom of the rigid connecting plate member is provided with mounting grooves at equal intervals, the side of the rigid connecting plate member away from the bridge deck body is provided with a plurality of fixing holes, and the two rigid connecting plate members close to each other on the front and rear two prefabricated concrete bridge decks are connected through the second high-strength bolt and the second high-strength nut, so that the connection between the two adjacent prefabricated concrete bridge decks is simple and firm, and the construction efficiency is improved.

[0014] Preferably, the side of the rigid connecting plate member close to the bridge deck body is fixed with a plurality of embedded rods, and the embedded rods are inlaid in the bridge deck body, so that the connection strength between the rigid connecting plate member and the bridge deck body is improved, and the connection between the rigid connecting plate member and the bridge deck body is firm and stable.

[0015] Preferably, the left and right two I-beams are connected through a cross beam.

[0016] In the above technical scheme, the technical effects and advantages of the present application are provided:

[0017] 1. The shear connecting member is factory prefabricated, the construction quality is easier to guarantee, the shear connecting member and the I-beam are connected through the high-strength screw rod and the first high-strength nut, the installation of the shear connecting member on the I-beam is more convenient, and the construction efficiency is improved.

[0018] 2、the first high-strength bolt and the high-strength threaded sleeve are used to connect the prefabricated concrete bridge deck and the I-beam, the connection strength and reliability between the prefabricated concrete bridge deck and the I-beam are improved, meanwhile, the mounting plate seat and the concrete block on the shear connector are respectively matched with the accommodating groove and the positioning groove on the prefabricated concrete bridge deck, so that the concrete block can effectively fill the positioning groove, the construction time is reduced, the construction efficiency is improved, and the prefabricated concrete bridge deck and the I-beam can be quickly combined and separated, and the prefabricated concrete bridge deck can be quickly replaced when damaged;

[0019] 3、the second high-strength bolt and the second high-strength nut are used to connect the two rigid connecting plates on the two adjacent prefabricated concrete bridge decks, so that the two prefabricated concrete bridge decks are simply and reliably connected, the construction efficiency is improved, and the prefabricated concrete bridge deck can be quickly replaced when damaged. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 It is another angle schematic diagram of the present application.

[0023] Figure 3 It is a schematic diagram of the connection between the I-beam and the shear connector of the present application.

[0024] Figure 4 It is a schematic diagram of the I-beam structure of the present application.

[0025] Figure 5 It is a schematic diagram of the shear connector structure of the present application.

[0026] Figure 6 It is a sectional view of the shear connector of the present application.

[0027] Figure 7 It is a schematic diagram of the prefabricated concrete bridge deck of the present application.

[0028] Figure 8 It is a schematic diagram of the connection between the adjacent prefabricated concrete bridge decks of the present application.

[0029] Explanation of reference signs:

[0030] 10, I-beam; 11, first mounting hole; 12, second mounting hole; 13, first high-strength bolt;

[0031] 20, shear connector; 21, mounting plate seat; 22, high-strength screw rod; 23, first high-strength nut; 24, concrete block; 25, cluster type shear nail;

[0032] 30, prefabricated concrete bridge deck; 31, bridge deck body; 32, high-strength threaded sleeve; 33, accommodating groove; 34, positioning groove; 35, rigid connecting plate; 36, second high-strength bolt; 37, second high-strength nut; 38, fixing hole;

[0033] 40, cross beam. DETAILED DESCRIPTION

[0034] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0035] The utility model provides a kind of assembly type steel concrete composite beam bridge as shown in Figures 1 to 8 It comprises:

[0036] A plurality of shear connectors 20, the shear connector 20 includes a mounting plate seat 21, the lower side left and right edges of the mounting plate seat 21 are fixed with high-strength screw rods 22 at equal intervals, the high-strength screw rods 22 are threadedly sleeved with first high-strength nuts 23, and the upper side middle part of the mounting plate seat 21 is fixed with concrete blocks 24;

[0037] A plurality of I-beams 10, the shear connector 20 is installed on the top of the I-beam 10, the top of the I-beam 10 is provided with a first mounting hole 11 at a position corresponding to the high-strength screw rod 22, a plurality of second mounting holes 12 are formed in the left and right edges of the upper side wall of the I-beam 10, and the second mounting hole 12 is nested with a first high-strength bolt 13;

[0038] A plurality of prefabricated concrete bridge decks 30, the plurality of prefabricated concrete bridge decks 30 are sequentially laid on the I-beam 10 from front to back, the prefabricated concrete bridge deck 30 includes a bridge deck body 31, the bottom of the bridge deck body 31 is inlaid with a high-strength threaded sleeve 32 at a position corresponding to the second mounting hole 12, the bottom of the bridge deck body 31 is provided with an accommodating groove 33 at a position corresponding to the shear connector 20, the upper side of the accommodating groove 33 is provided with a positioning groove 34, the front and rear ends of the bridge deck body 31 are both fixed with rigid connecting plate pieces 35, and the second high-strength bolt 36 and the second high-strength nut 37 are arranged between the two rigid connecting plate pieces 35 that are close to each other on the front and rear adjacent two prefabricated concrete bridge decks 30.

[0039] The lower end of the high-strength screw rod 22 penetrates through the corresponding first mounting hole 11, and the first high-strength nut 23 is located at the lower end of the first mounting hole 11.

[0040] The upper end of the first high-strength bolt 13 is threadedly nested in the corresponding high-strength threaded sleeve 32, so that the connection between the prefabricated concrete bridge deck 30 and the I-beam 10 is simple and firm.

[0041] The upper end of the positioning groove 34 extends to the upper side of the bridge deck body 31, the accommodating groove 33 is matched with the mounting plate base 21, and the positioning groove 34 is matched with the concrete block 24.

[0042] The inside of the concrete block 24 is inlaid with the cluster-type shear bolt 25, the lower end of the cluster-type shear bolt 25 is fixedly connected with the mounting plate base 21, the structural strength of the concrete block 24 is improved, and meanwhile the connecting strength of the concrete block 24 and the mounting plate base 21 is improved.

[0043] The bottom of the rigid connecting plate piece 35 is provided with mounting grooves at equal intervals, the side, away from the bridge deck body 31, of the rigid connecting plate piece 35 is provided with a plurality of fixing holes 38, and the two rigid connecting plate pieces 35, close to each other, on the front and back of the two prefabricated concrete bridge decks 30 are connected through the second high-strength bolt 36 and the second high-strength nut 37, so that the connection between the two adjacent prefabricated concrete bridge decks 30 is simple and firm, and the construction efficiency is improved.

[0044] The side, close to the bridge deck body 31, of the rigid connecting plate piece 35 is fixedly provided with a plurality of embedded rods, the embedded rods are inlaid in the bridge deck body 31, the connecting strength between the rigid connecting plate piece 35 and the bridge deck body 31 is improved, and the connection between the rigid connecting plate piece 35 and the bridge deck body 31 is firm and stable.

[0045] The left and right two I-beams 10 are connected through the beam 40 through bolts.

[0046] In the utility model, the I-beam 10, the shear connecting piece 20 and the prefabricated concrete bridge deck 30 are all factory-prepared, and when assembled on site:

[0047] First, the shear connecting piece 20 is mounted on the I-beam 10, the first high-strength nut 23 on the high-strength screw rod 22 at the bottom of the shear connecting piece 20 is removed, the high-strength screw rod 22 at the bottom of the shear connecting piece 20 is aligned with the first mounting hole 11 on the I-beam 10, so that the high-strength screw rod 22 is inserted into the first mounting hole 11, and then the first high-strength nut 23 is threadedly sleeved on the high-strength screw rod 22, thereby realizing the mounting of the shear connecting piece 20 on the I-beam 10.

[0048] Then the prefabricated concrete bridge deck 30 is hoisted on the I-beam 10, the positioning groove 34 on the prefabricated concrete bridge deck 30 is aligned with the concrete block 24 on the shear connector 20, so that the concrete block 24 on the shear connector 20 is inserted into the positioning groove 34 on the prefabricated concrete bridge deck 30, and the mounting plate seat 21 on the shear connector 20 is nested in the accommodating groove 33 on the prefabricated concrete bridge deck 30, then the first high-strength bolt 13 is passed through the second mounting hole 12 on the I-beam 10, so that the upper end of the first high-strength bolt 13 is threaded into the high-strength threaded sleeve 32 embedded at the bottom of the prefabricated concrete bridge deck 30, and the installation of the prefabricated concrete bridge deck 30 on the I-beam 10 is realized.

[0049] The two rigid connecting plates 35 on the two prefabricated concrete bridge decks 30 adjacent to each other are connected by the second high-strength bolt 36 and the second high-strength nut 37, and the connection between the two prefabricated concrete bridge decks 30 adjacent to each other is realized.

[0050] In the utility model, the shear connector 20 can be prefabricated in a factory, and the construction quality is easier to guarantee, and the shear connector 20 is connected with the I-beam 10 through the high-strength screw rod 22 and the first high-strength nut 23, so that the installation of the shear connector 20 on the I-beam 10 is more convenient and fast, the construction efficiency is improved, the mounting plate seat 21 and the concrete block 24 on the shear connector 20 are respectively matched with the accommodating groove 33 and the positioning groove 34 on the prefabricated concrete bridge deck 30, so that the concrete block 24 can effectively fill the positioning groove 34, and the construction time is reduced, the construction efficiency is improved, the prefabricated concrete bridge deck 30 is connected with the I-beam 10 through the first high-strength bolt 13 and the high-strength threaded sleeve 32, the two prefabricated concrete bridge decks 30 adjacent to each other are connected through the second high-strength bolt 36 and the second high-strength nut 37, the prefabricated concrete bridge deck 30 and the I-beam 10 can be quickly combined or separated, and the prefabricated concrete bridge deck 30 can be quickly replaced when damaged.

[0051] The above only describes certain exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, under the condition that the spirit and scope of the utility model are not deviated, the described embodiments can be modified in various different ways, therefore, the above drawing and description are illustrative in nature, and should not be understood as the limitation of the utility model claim protection scope.

Claims

1. A fabricated steel-concrete composite girder bridge, characterized by, Include: A plurality of shear connectors (20), the shear connectors (20) include mounting plate seat (21), the lower side of the mounting plate seat (21) left and right edge equidistantly fixed with high-strength screw rod (22), the high-strength screw rod (22) is screwed with first high-strength nut (23), the upper side of the mounting plate seat (21) middle part is fixed with concrete block (24); A plurality of I-beam (10), the shear connectors (20) are installed on the top of I-beam (10), the top of I-beam (10) is provided with first installation hole (11) corresponding to the position of high-strength screw rod (22), the left and right edges of the upper side wall of I-beam (10) are provided with a plurality of second installation hole (12), the second installation hole (12) is nested with first high-strength bolt (13); A plurality of precast concrete bridge deck (30), a plurality of precast concrete bridge deck (30) are sequentially laid on I-beam (10) from front to back, the precast concrete bridge deck (30) includes bridge deck body (31), the bottom of bridge deck body (31) is inlaid with high-strength threaded sleeve (32) corresponding to the position of second installation hole (12), the bottom of bridge deck body (31) is provided with accommodating groove (33) corresponding to the position of shear connector (20), the upper side of accommodating groove (33) is provided with positioning groove (34), the front and rear ends of bridge deck body (31) are fixed with rigid connecting plate (35), the second high-strength bolt (36) and the second high-strength nut (37) are arranged between the two rigid connecting plates (35) of the two precast concrete bridge decks (30) adjacent to each other.

2. The prefabricated steel-concrete composite girder bridge according to claim 1, characterized in that: The lower end of the high-strength screw rod (22) penetrates through the corresponding first installation hole (11), and the first high-strength nut (23) is located at the lower end of the first installation hole (11).

3. The prefabricated steel-concrete composite girder bridge according to claim 1, characterized in that: The upper end of the first high-strength bolt (13) is screwed into the corresponding high-strength threaded sleeve (32).

4. The prefabricated steel-concrete composite girder bridge according to claim 1, characterized in that: The upper end of the positioning groove (34) extends to the upper side of the bridge deck body (31), the accommodating groove (33) matches the mounting plate seat (21), and the positioning groove (34) matches the concrete block (24).

5. The prefabricated steel-concrete composite girder bridge according to claim 1, characterized in that: The interior of the concrete block (24) is inlaid with a cluster of shear nails (25), and the lower end of the cluster of shear nails (25) is fixedly connected with the mounting plate seat (21).

6. The prefabricated steel-concrete composite girder bridge according to claim 1, characterized in that: The bottom of the rigid connecting plate (35) is equidistantly provided with a mounting groove, and a plurality of fixing holes (38) are formed in the side of the rigid connecting plate (35) away from the bridge deck body (31), and the second high-strength bolt (36) and the second high-strength nut (37) are connected between the two rigid connecting plates (35) of the two precast concrete bridge decks (30) adjacent to each other.

7. The prefabricated steel-concrete composite girder bridge according to claim 6, characterized in that: The side of the rigid connecting plate (35) close to the bridge deck body (31) is fixed with a plurality of embedded rods, and the embedded rods are inlaid in the bridge deck body (31).

8. The prefabricated steel-concrete composite girder bridge according to claim 1, characterized in that: The left and right adjacent I-beams (10) are connected by a cross beam (40) through bolts.

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