Truss and positioning device for positioning shear nails and bridge deck slab reinforcing steel bars of reinforced concrete bridge

Abstract

The utility model discloses a truss and a positioning device for positioning shear nails and bridge deck slab reinforcing steel bars of a reinforced concrete bridge, which comprise positioning plates, fixed lifting lugs are arranged on the positioning plates on two sides, connecting lifting holes are formed in the fixed lifting lugs, and each connecting lifting hole comprises a first side frame and a second side frame. The first side frame and the second side frame are the same in structure and parallel to each other, and connectors connected with the fixed lifting lugs in a matched mode are formed at the two ends of the first side frame and the two ends of the second side frame. Through structural improvement, the special trusses are arranged to be matched with the positioning plates, the position relation of the positioning pipe assemblies on the two sides in the construction process is determined, it is guaranteed that the positioning pipe assemblies on the sides position reinforcing steel bars on the sides, the relative positions of the reinforcing steel bars on the two sides are determined through the trusses at the same time, and therefore the construction efficiency is improved from the actual construction scene. The problem that when a reinforced concrete bridge is manufactured, position matching between reinforcing meshes on the two sides of a concrete bridge deck and shear nails on the two sides of a steel box girder is difficult to achieve at the same time is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and in particular relates to a truss and a positioning device used for positioning shear nails and bridge deck steel bars of a steel-concrete bridge. Background Art

[0002] Steel-concrete composite beams are composed of an open steel box girder and a non-prestressed reinforced concrete precast bridge deck. The two are connected by shear nails installed on the steel box girder, so that the steel-concrete structure can achieve the effect of shared stress. The shear nails prefabricated on the steel box girder in the factory have a high degree of precision, while the steel bars in the concrete bridge deck are easily misaligned due to manual arrangement and binding, multiple layers of steel bars, and displacement during concrete pouring. Misalignment of the steel bars in the bridge deck will result in the shear nails not being fully inserted into the shear grooves when the concrete bridge deck is hoisted, which will lead to improper connection between the bridge deck and the steel box girder. If the shear nails are cut and welded after the bridge deck is in place, the shear nails will be blocked by the multiple layers of steel bars in the shear grooves of the bridge deck, making the welding of the shear nails after cutting difficult and laborious, and the quality of the project difficult to guarantee, affecting the structural strength of the steel-concrete composite beam. Utility Model Content

[0003] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide a truss and positioning device for positioning the shear nails and bridge deck steel bars of steel-concrete bridges. Through structural improvement, the device is equipped with a special truss to cooperate with the positioning plate, and determines the position relationship of the positioning tube assemblies on both sides during construction. It not only ensures the positioning of the steel bars on each side by the positioning tube assembly, but also simultaneously determines the relative positions of the steel bars on both sides through the truss. In this way, starting from the actual construction scene, the problem that the steel bars on both sides are difficult to achieve position coordination with the shear nails at the same time is solved.

[0004] One of the purposes of the present utility model is to provide a truss for positioning shear nails and bridge deck steel bars of steel-concrete bridges, comprising two relatively arranged positioning plates and an intermediate truss, wherein the positioning plates are provided with through holes for the shear nail positioning tubes to pass through, and fixed lifting ears are respectively provided on both sides of the two positioning plates, and connecting lifting holes are formed on the fixed lifting ears, and the intermediate truss includes a base frame, and connecting heads are formed at both ends of the base frame to cooperate with the connecting lifting holes of the fixed lifting ears.

[0005] As a preferred solution, an external thread section is formed on the connecting head, and the external thread section is inserted into the connecting hanging hole of the positioning plate and fixed by a nut assembly.

[0006] As a preferred solution, the base frame includes two connecting rods and a lower cross rod, the two connecting rods are parallel to each other, the lower cross rod is located between the two connecting rods, and both ends of the lower cross rod are respectively connected to the two connecting rods.

[0007] As a preferred scheme, the intermediate truss further comprises a top truss fixed on the bottom truss, and the top truss comprises a top rod assembly arranged on each connecting rod, the top rod assembly comprising a vertical rod and at least two inclined rods arranged on both sides of the vertical rod, the vertical rod being connected with the first ends of the inclined rods, and the second ends of the inclined rods being connected with different positions on the connecting rod, respectively.

[0008] As a preferred scheme, the nut assembly comprises a first nut and a second nut, and the first nut and the second nut are arranged on the outer threaded section and arranged on both sides of the fixed lug, respectively.

[0009] As a preferred scheme, the fixed lug is provided with a reinforcing plate on each side, and the reinforcing plate is connected with the fixed lug perpendicularly.

[0010] The second purpose of the utility model is to provide a positioning device comprising the truss and the positioning pipe assembly for positioning the shear stud and the bridge deck reinforcement of the steel-concrete bridge.

[0011] As a preferred scheme, the positioning pipe assembly comprises a shear stud positioning pipe and a positioning pipe connecting piece, the shear stud positioning pipes are arranged in an array, the positioning pipe connecting piece is used for fixedly connecting the shear stud positioning pipes in each column, and the shear stud positioning pipe is connected with the through hole of the positioning plate.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] Firstly, the truss structure is arranged to determine the relative position relationship of the two positioning pipe assemblies, so that the relative positions of the steel bars in the mold positioning grooves on both sides of the bridge deck can be simultaneously matched with the positions of the shear studs of the steel box girder, and since the relative positions of the positioning plates on both sides of the truss are fixed, the relative positions of the two positioning pipe assemblies are also fixed, so that the relative positions of the steel bars in the mold positioning grooves on both sides are finally fixed.

[0014] Secondly, the intermediate truss connecting the two positioning plates is improved in structure, the intermediate truss structure comprising a bottom truss composed of connecting rods and lower cross rods and a top truss composed of upper cross rods, vertical rods and inclined rods, the outer threaded sections at the two ends of the connecting rods can be quickly connected with the positioning plates, and the connecting rods, the upper cross rods, the lower cross rods, the vertical rods and the inclined rods are matched to effectively enhance the stability of the device as a whole.

[0015] Thirdly, the positioning device of the scheme not only ensures the relative position relationship between the steel bars in each side positioning groove and the corresponding side shear nails through the positioning pipe connecting piece, but also realizes the simultaneous corresponding relationship between the two side positioning pipe assemblies and the two side shear nails through the truss, so that the position relationship between the shear nails and the steel bars in the construction process is realized through two-stage corresponding relationship, and the obstruction of the steel bars to the shear nails is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 It is a three-dimensional structural diagram of the truss of the utility model;

[0018] Figure 2 It is the actual application scene in the utility model Figure One ;

[0019] Figure 3 It is the actual application scene in the utility model Figure Two ;

[0020] Figure 4 It is the actual application scene in the utility model Figure Three ;

[0021] Figure 5 It is the actual application scene in the utility model Figure Four ;

[0022] Figure 6 It is the cooperation schematic view of the positioning plate and the positioning pipe assembly in the utility model;

[0023] Figure 7 It is the connection schematic view of the fixed lifting lug and the nut assembly;

[0024] Marked in the figure: 1, intermediate truss, 11, base frame, 111, connecting rod, 112, lower crossbar, 12, top frame, 121, vertical rod, 122, diagonal rod, 123, upper crossbar, 13, connecting head, 131, outer threaded section, 2, positioning plate, 21, through hole, 3, fixed lifting lug, 31, connecting lifting hole, 4, nut assembly, 41, first nut, 42, second nut, 100, truss, 200, positioning tube assembly, 201, shear pin positioning tube, 202, positioning tube connecting piece, 300, steel box girder, 301, shear pin, 400, bridge deck formwork, 401, formwork positioning groove, 402, formwork comb plate, 500, steel mesh, 501, steel bar, 600, concrete bridge deck, 601, shear groove. DETAILED DESCRIPTION

[0025] The utility model will be described in detail below through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0026] It should be noted that: unless otherwise defined, the technical terms or scientific terms used in the present utility model should be understood as the usual meaning by those skilled in the art to which the present utility model belongs. The similar words such as “one”, “a” or “the” and the like used in the utility model patent application description and claims do not express quantity limitation, but indicate that there is at least one. The similar words such as “include” or “contain” indicate that the elements or objects appearing before “include” or “contain” cover the elements or objects listed after “include” or “contain” and their equivalents, but do not exclude other elements or objects with the same function.

[0027] Embodiment 1

[0028] Before introducing the present scheme, the steel-concrete composite beam structure is first explained, which comprises a steel box girder 300 and a concrete bridge deck 600. The upper edge top plate of the steel box girder 300 is welded with shear pins 301. Specifically, the upper edge left and right side top plates of the steel box girder 300 are both provided with shear pins 301, which are welded with the steel box girder 300 as a whole to ensure the accuracy of the arrangement of the shear pins 301 and the connection reliability. The concrete bridge deck 600 has two shear grooves 601, and the shear grooves 601 have exposed multi-layer steel mesh 500. The shear pins 301 of the steel box girder 300 need to pass through the shear grooves 601 of the concrete bridge deck 600, so during the passing process, the steel mesh 500 is arranged and passed through in the shear grooves 601 of the concrete bridge deck 600. Therefore, when the steel box girder 300 and the concrete bridge deck 600 are installed and connected, the shear pins 301 and the steel mesh 500 inside the shear grooves 601 need to be avoided from interfering with each other.

[0029] As shown in the figure, the embodiment provides a truss for positioning shear stud and steel bar of steel-concrete bridge, which comprises a middle truss 1 and positioning plates 2 symmetrically arranged on both sides of the middle truss 1, the middle truss 1 is detachably connected with the positioning plates 2, the middle truss 1 is provided with connecting heads 13 on both sides which are matched with the positioning plates 2, the positioning plates 2 are provided with connecting eyelets 31 matched with the connecting heads 13, the positioning plates 2 are provided with through holes 21 on the end faces, the axial directions of the through holes 21 of the positioning plates 2 on both sides are the same, the axial direction of the through holes 21 is perpendicular to the end face of the positioning plates 2, and the connecting heads 13 of the middle truss 1 are detachably matched and connected with the connecting eyelets 31 of the positioning plates 2.

[0030] In the embodiment, the connecting convenience of the positioning plates 2 is considered, and the fixed lugs 3 are fixedly arranged on both sides of the positioning plates 2 which are parallel to the arrangement direction of the middle truss 1, the fixed lugs 3 can be arranged on the positioning plates 2 in an integral molding manner, or can be connected and fixed with the positioning plates 2 in a split type manner, for example, a bolt fixing manner. The fixed lugs 3 are provided with the connecting eyelets 31, and the connecting direction of the connecting eyelets 31 is perpendicular to the connecting direction of the through holes 21. The connecting heads 13 are provided with external thread segments 131, the external thread segments 131 can be one segment of the connecting heads 13, the external thread segments 131 are inserted into the connecting eyelets 31, and the relative positions of the fixed lugs 3 and the connecting heads 13 are fixed by the nut assemblies 4, for example, the nut assemblies 4 comprise two nuts, a first nut 41 and a second nut 42 which are arranged on both sides of the fixed lugs 3 and are screwed on the external thread segments 131 to clamp and fix the fixed lugs 3 from both sides. In an embodiment not shown in the figure, the external threads can also be arranged on the whole outer column surface of the connecting heads 13.

[0031] In order to improve the strength of the fixed lugs 3, the reinforcing plates 32 are arranged at the corner positions where the fixed lugs 3 are connected with the positioning plates 2, at least one reinforcing plate 32 is arranged on each side of the fixed lugs 3, preferably, more than two reinforcing plates 32 can be arranged on each side of the fixed lugs 3, so as to improve the strength of the connecting positions of the roots of the fixed lugs 3, the reinforcing plates 32 are connected with the fixed lugs 3 perpendicularly, so as to prevent the fixed lugs 3 from being deformed under stress during use, and improve the service life of the device.

[0032] In order to improve the stability and safety of the device as a whole, the intermediate truss 1 can adopt the following structure: the intermediate truss 1 comprises a bottom frame 11 and a top frame 12 connected above the bottom frame 11, and the top frame 12 is used to strengthen the strength of the bottom frame 11. The bottom frame 11 comprises two mutually parallel connecting rods 111 and a lower cross bar 112 arranged between the two connecting rods 111, wherein the two ends of the lower cross bar 112 are respectively connected perpendicularly to the connecting rods 111 on both sides, and a connecting head 13 is formed at the end of each connecting rod 111, and the connecting head 13 is matched with the connecting lug hole 31 of the fixed lifting lug 3. The top frame 12 comprises a vertical rod 121, an inclined rod 122 and an upper cross bar 123, and the inclined rod 122 and the vertical rod 121 form a top rod assembly on both sides, which is arranged above the connecting rod 111. In each top rod assembly on both sides, at least two inclined rods 122 are arranged symmetrically on both sides of the vertical rod 121, and the first ends of the inclined rod 122 and the vertical rod 121 are connected, and the second ends of the inclined rod 122 and the vertical rod 121 are arranged at different positions on the connecting rod 111. Preferably, the vertical rod 121 is perpendicular to the connecting rod 111, and the upper cross bar 123 is arranged between the top rod assemblies on both sides. The upper cross bar 123 can be arranged as one or more, wherein when the upper cross bar 123 is arranged as one, the upper cross bar 123 is connected to the upper end of the two top rod assemblies, that is, the upper end of the upper cross bar 123 is connected to the inclined rod 122 and the vertical rod 121.

[0033] In an embodiment not shown in the drawings, the upper cross bar 123 can also be arranged as three or more, wherein the uppermost one is connected to the upper end of the top rod assembly, and the remaining two are symmetrically connected to the middle of the inclined rod 122 on both sides. This design can greatly improve the strength of the device. In another variant embodiment not shown in the drawings, the inclined rod 122 can also be arranged as four or six, and two or three inclined rods 122 are arranged on both sides of each vertical rod 121.

[0034] In the present scheme, the connecting rod 111, the vertical rod 121, the inclined rod 122, the upper cross bar 123 and the lower cross bar 112 jointly form a truss structure, and the top rod assemblies on both sides and the connecting rod 111 constitute a stable tripod structure, which can effectively ensure the overall stability of the device.

[0035] The positioning plate 2 can be made of a steel plate with a thickness of 2 cm, and the positioning plate 2 has a circular through hole 21 at the same position as the shear pin positioning tube 201. The diameter of the through hole 21 matches the outer diameter of the shear pin positioning tube 201, so that the shear pin positioning tube 201 is inserted into the circular through hole 21. The size of the positioning plate 2 is determined according to the shear groove 601 of the concrete bridge deck 600, and the length and width of the positioning plate 2 are respectively smaller than the length and width of the shear groove 6 by about 1-2 cm, so as to facilitate the disassembly and assembly of the positioning plate 2. The positioning plate 2 is provided with a fixed lifting lug 3 on the side, and the inner diameter of the connecting lifting hole 31 of the fixed lifting lug 3 matches the diameter of the positioning structure connecting rod 111. The thickness of the fixed lifting lug 3 is not less than 0.5 cm, and a reinforcing plate 32 is arranged at the root of the fixed lifting lug 3, and the reinforcing plate 32 is connected with the fixed lifting lug 3 and the positioning plate 2 respectively. The connecting rod 111 is a hollow cylinder in the middle, and the both ends of the connecting rod 111 are connected with a solid stud structure connecting head 13. The diameter of the connecting rod 111 is 1.5 cm, and the middle section of the connecting rod 111 can be made of a hollow pipe structure, and the thickness of the hollow part is not less than 0.1 cm to ensure the overall strength. The length of the connecting rod 111 can be adjusted according to the distance between the two positioning plates 2. The both ends of the connecting rod 111 are inserted into the fixed lifting lug 3, and are fixed with the fixed lifting lug 3 by using a nut assembly 4, so as to ensure that the relative position of the two positioning plates 2 does not change. The vertical rod 121, the inclined rod 122, the upper horizontal rod 123 and the lower horizontal rod 112 can be made of a cylindrical hollow pipe with a thickness of not less than 0.1 cm. The lower horizontal rod 112 is arranged vertically with the connecting rod 111, and the number of the lower horizontal rod 112 can be determined according to the length of the connecting rod 111. Preferably, the distance between two adjacent lower horizontal rods 112 is not greater than 1 / 3 of the length of the connecting rod 111.

[0036] Example 2

[0037] The embodiment provides a positioning device, which comprises the positioning tube assembly 200 and the truss 100 for positioning the shear pin 8 and the bridge deck steel bar of the steel-concrete bridge in example 1, wherein the truss 100 is provided with the positioning tube assembly 200 at both ends.

[0038] The positioning tube assembly 200 includes a plurality of shear pin positioning tubes 201 arranged in an array, the shear pin positioning tubes 201 are parallel to each other, the positioning tube connectors 202 are provided with horizontal rows and vertical columns, the positioning tube connectors 202 of the horizontal rows are perpendicular to the positioning tube connectors 202 of the vertical columns, and the positioning tube connectors 202 are perpendicular to the shear pin positioning tubes 201, and the positioning tube connectors 202 are used to fixedly connect each column of shear pin positioning tubes 201. The upper end of the shear pin positioning tube 201 is connected with the through hole 21 of the positioning plate 2, and the outer diameter of the shear pin positioning tube 201 matches the inner diameter of the through hole 21. The upper end of the shear pin positioning tube 201 is inserted into the through hole 21 of the positioning plate 2, so that the position of the shear pin positioning tube 201 is fixed. Due to the action of the truss 100, the relative positions of the two positioning tube assemblies 200 can be determined.

[0039] In this embodiment, the shear pin positioning tube 201 is a cylindrical hollow structure. In order to improve the positioning efficiency, the diameter of each positioning tube can be adjusted according to the diameter of the shear pin, and should be greater than the diameter of a single shear pin by 1cm-2cm. The height of each shear pin positioning tube 201 can be adjusted according to the height of the shear pin 301, and should be greater than the height of the shear pin 301 by 5-8cm. Considering the stability and overall quality of the device, the thickness of the shear pin positioning tube 201 is not more than 0.2cm. The positioning tube connector 202 is a cylindrical hollow structure, located at the upper 1 / 4 of the shear pin positioning tube 201, with a diameter of 1cm and a thickness of not more than 0.1cm.

[0040] In this embodiment, the shear pin positioning tube 201, the positioning tube connector 202, and the positioning plate 2 are all made of plastic-coated steel. A layer of PE material is uniformly coated on the surface of the steel structure, and the thickness of the coating is about 300um, so as to ensure the corrosion resistance and friction resistance of the device.

[0041] The construction steps of the positioning device using the scheme are described as follows:

[0042] Step 1: In a prefabrication factory, a steel box girder 300 is manufactured, assembled into a complete body, and the shear pins 301 are welded on the upper edge of the steel box girder 300 according to requirements.

[0043] Step 2: The shear pin positioning tube 201 is used to cover each shear pin 301 on one side of the upper edge of the steel box girder 300, and the positioning tube connector 202 is used to connect adjacent shear pin positioning tubes 201, so as to ensure the accuracy of the position of the shear pin positioning tube 201. The same operation is performed on the shear pins 301 on the other side of the steel box girder 300.

[0044] Step 3: The fixed lifting lug 3 is welded at 1 / 3 of the side of the positioning plate 2, and the axis of the connecting lifting hole 31 of the fixed lifting lug 3 is perpendicular to the height direction of the positioning plate 2, that is, the axis of the connecting lifting hole 31 is perpendicular to the axis direction of the through hole 31 of the positioning plate 2.

[0045] Step 4, place the positioning plate 2 above the shear pin positioning tube 201, make sure that each shear pin positioning tube 201 extends into the through hole 21, at this time the shear pin positioning tube 201, the positioning tube connecting piece 202 and the positioning plate 2 form an integral positioning structure.

[0046] Step 5, use two connecting rods 111 and nut assemblies 4 to connect the two positioning plates 2 on both sides of the fixed lifting lug 3. The connecting rod 111 should pass through the fixed lifting lug 3, and the fixed lifting lug 3 and the connecting rod 111 should be fixed at both ends of the fixed lifting lug 3 with nuts.

[0047] Step 6, use the lower cross bar 112 to connect the two connecting rods 111 to ensure that the two connecting rods 111 do not move relative to each other, and use the top frame 12 composed of the upper cross bar 123, the vertical rod 121 and the inclined rod 122 to connect the bottom frame 11, so that the connecting structure becomes a truss structure, further ensuring the stability of the entire device.

[0048] Step 7, disassemble the truss 100 and the positioning tube assembly 200 from the two sides of the shear pin 301, and place the device on the concrete bridge deck formwork 400 after cleaning, the bottom of the shear pin positioning tube 201 is clamped in the formwork positioning groove 402 to determine the position of the positioning device, and the bridge deck formwork 400 is used to form the concrete bridge deck 600.

[0049] Step 8, pass the reinforcing steel bars 501 that have been pretreated by straightening, leveling and rust removal through the shear pin positioning tube 201 and the formwork comb plate 401, arrange and tie the reinforcing steel bars 501 from bottom to top to form a multi-layer reinforcing mesh 500, so as to ensure that the multi-layer reinforcing mesh 500 in the shear groove 601 of the concrete bridge deck 600 does not conflict with the shear pin positioning tube 201.

[0050] Step 9, pour the bridge deck concrete, after curing, lift the concrete bridge deck 600 as a whole, remove the positioning device, and repeat the cycle.

[0051] The positioning device with the specific structure is matched by the truss 100 and the positioning pipe assembly 200, the spacing and relative position of the positioning pipe assembly 200 are determined by the truss 100 installed later, the top frame 12 and the bottom frame 11 of the truss are matched to ensure the strength of the whole device, the design prevents the relative position of the two positioning pipe assemblies 200 from changing when the positioning device is placed behind the concrete bridge deck formwork 400, since the reinforcement mesh 500 is laid according to the positioning pipe assembly 200, the reinforcement mesh 500 is laid to avoid the position of the shear stud positioning pipe 201 (the shear stud 301), therefore, the concrete bridge deck 600 made by the positioning device does not conflict between the multi-layer reinforcement mesh 500 in the shear groove 601 and the shear stud 301, ensures that the shear stud 301 does not hinder the reinforcement mesh 500 of the concrete bridge deck 600 during the later installation, greatly improves the construction efficiency, and effectively ensures the construction quality in the later period.

[0052] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A truss for positioning of shear studs and bridge deck reinforcement of a steel-concrete bridge, characterized in that: The utility model relates to a kind of steel reinforced concrete bridge shear pin positioning device, including two oppositely arranged positioning plates and intermediate truss, the positioning plate is provided with through hole for shear pin positioning pipe passing, two positioning plates are correspondingly provided with fixed lifting lug on both sides, connecting lifting hole is formed on the fixed lifting lug, the intermediate truss includes chassis, the chassis both ends are formed with connecting head connected with the connecting lifting hole of fixed lifting lug.

2. The truss for positioning shear studs and bridge deck reinforcements of a steel-concrete bridge according to claim 1 is characterized in that: Connecting head is formed with external thread section, the external thread section is arranged in the connecting hole of positioning plate, and is fixed by nut assembly.

3. The truss for positioning of shear stud and reinforcement of steel-concrete bridge according to claim 1, characterized in that: The chassis includes two connecting rods and lower cross bar, the two connecting rods are parallel to each other, and the lower cross bar is located between the two connecting rods, and the two ends of the lower cross bar are connected with the two connecting rods respectively.

4. The truss for positioning of shear stud and reinforcement of steel-concrete bridge according to claim 1, characterized in that: The intermediate truss further includes top frame, the top frame is fixed on the chassis, and the top frame includes top rod assembly arranged on the two connecting rods respectively, the top rod assembly includes a vertical rod and at least two inclined rods, the inclined rods are located on both sides of the vertical rod, the vertical rod is connected with the first end of the inclined rod, the second end of the vertical rod and the inclined rod is connected with different positions on the connecting rod respectively, and the first ends of the two side top frame assemblies are further connected by upper cross bar.

5. The truss for positioning of shear stud and reinforcement of steel-concrete bridge according to claim 2, characterized in that: The nut assembly includes first nut and second nut, the first nut and the second nut are arranged on the external thread section, and are arranged on both sides of the fixed lifting lug.

6. The truss for positioning of shear stud and reinforcement of steel-concrete bridge according to claim 3 or 4, characterized in that: The two sides of the fixed lifting lug are provided with reinforcing plate respectively, and the reinforcing plate is connected with the fixed lifting lug vertically.

7. A positioning device, characterized by: The utility model relates to a kind of steel reinforced concrete bridge shear pin positioning device, including two oppositely arranged positioning plates and intermediate truss, the positioning plate is provided with through hole for shear pin positioning pipe passing, two positioning plates are correspondingly provided with fixed lifting lug on both sides, connecting lifting hole is formed on the fixed lifting lug, the intermediate truss includes chassis, the chassis both ends are formed with connecting head connected with the connecting lifting hole of fixed lifting lug.

8. A positioning device according to claim 7, characterized in that: Connecting head is formed with external thread section, the external thread section is arranged in the connecting hole of positioning plate, and is fixed by nut assembly. The chassis includes two connecting rods and lower cross bar, the two connecting rods are parallel to each other, and the lower cross bar is located between the two connecting rods, and the two ends of the lower cross bar are connected with the two connecting rods respectively. The intermediate truss further includes top frame, the top frame is fixed on the chassis, and the top frame includes top rod assembly arranged on the two connecting rods respectively, the top rod assembly includes a vertical rod and at least two inclined rods, the inclined rods are located on both sides of the vertical rod, the vertical rod is connected with the first end of the inclined rod, the second end of the vertical rod and the inclined rod is connected with different positions on the connecting rod respectively, and the first ends of the two side top frame assemblies are further connected by upper cross bar. The nut assembly includes first nut and second nut, the first nut and the second nut are arranged on the external thread section, and are arranged on both sides of the fixed lifting lug. The two sides of the fixed lifting lug are provided with reinforcing plate respectively, and the reinforcing plate is connected with the fixed lifting lug vertically. The utility model relates to a kind of steel reinforced concrete bridge shear pin positioning device, including two oppositely arranged positioning plates and intermediate truss, the positioning plate is provided with through hole for shear pin positioning pipe passing, two positioning plates are correspondingly provided with fixed lifting lug on both sides, connecting lifting hole is formed on the fixed lifting lug, the intermediate truss includes chassis, the chassis both ends are formed with connecting head connected with the connecting lifting hole of fixed lifting lug. Connecting head is formed with external thread section, the external thread section is arranged in the connecting hole of positioning plate, and is fixed by nut assembly. The chassis includes two connecting rods and lower cross bar, the two connecting rods are parallel to each other, and the lower cross bar is located between the two connecting rods, and the two ends of the lower cross bar are connected with the two connecting rods respectively. The intermediate truss further includes top frame, the top frame is fixed on the chassis, and the top frame includes top rod assembly arranged on the two connecting rods respectively, the top rod assembly includes a vertical rod and at least two inclined rods, the inclined rods are located on both sides of the vertical rod, the vertical rod is connected with the first end of the inclined rod, the second end of the vertical rod and the inclined rod is connected with different positions on the connecting rod respectively, and the first ends of the two side top frame assemblies are further connected by upper cross bar. The nut assembly includes first nut and second nut, the first nut and the second nut are arranged on the external thread section, and are arranged on both sides of the fixed lifting lug. The two sides of the fixed lifting lug are provided with reinforcing plate respectively, and the reinforcing plate is connected with the fixed lifting lug vertically. The positioning tube assembly includes shear pin positioning tube and positioning tube connecting piece, the shear pin positioning tube is arranged in array, the positioning tube connecting piece is used for fixedly connecting the shear pin positioning tube of each column, and the shear pin positioning tube is connected with the through hole of the positioning plate.

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