Pushing bridge floor template and oblique crossing U-shaped steel bridge

Abstract

The utility model discloses a pushing bridge deck formwork and a skew U-shaped steel bridge, the pushing bridge deck formwork comprises a plurality of supporting pieces, a plurality of supporting pieces and a plurality of supporting pieces, the plurality of supporting pieces are respectively arranged at the web positions of each steel box girder right opposite to the corresponding steel box girder; the main beam is connected with each supporting piece; the multiple first opposite-pull screws are distributed in the extending direction of the main beam at intervals; the first double steel pipes are arranged on the side, facing the steel box girder, of each first opposite-pull screw rod; the first square timber is arranged on the first double-steel pipe, and the supporting piece, the main beam, the first opposite-pull screw rod, the first double-steel pipe and the first square timber form a reverse hanging system. According to the utility model, reverse hoisting construction is facilitated, effective combination of the steel box girder and concrete is ensured, and cracks of the concrete caused by jacking force generated by jacking of jacking equipment are reduced. And the construction sequence of the bridge deck concrete is adjusted by arranging the formwork reverse hoisting system, the operation time above the expressway pavement is shortened, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, and more specifically to a jacking bridge deck template and an oblique U-shaped steel bridge. Background Art

[0002] The prior art generally lacks formwork construction between steel box girders, resulting in an inability to form an effective bond between the steel box girders and the concrete, and the concrete is easily cracked due to the pressure generated by the jacking of the jacking equipment. Utility Model Content

[0003] One purpose of the utility model is to provide a new technical solution for a jacking bridge deck template and an oblique U-shaped steel bridge, which can at least solve the technical problems existing in the prior art.

[0004] The first aspect of the utility model provides a jacking bridge deck formwork, comprising: a plurality of support members, wherein the plurality of support members are arranged at intervals at the top plate position of each steel box girder and respectively face the web of the corresponding steel box girder, and one end of the support member is connected to the corresponding steel box girder; a main beam, wherein the main beam is arranged on a side of the support member away from the steel box girder, the main beam extends in the transverse direction, the support member extends in the vertical direction, and the main beam is connected to each of the support members; a plurality of first tension screws, wherein the plurality of first tension screws are arranged at intervals along the extension direction of the main beam, and each of the first tension screws passes through the main beam and extends toward one side of the steel box girder; a plurality of first double steel pipes, wherein the first double steel pipe is respectively arranged on the side of each of the first tension screws facing the steel box girder, and the first double steel pipe is tied to the main beam through the first double steel pipe; a first square timber, wherein the first square timber is arranged on the first double steel pipe, and the support member, the main beam, the first tension screw, the first double steel pipe and the first square timber form an anti-hanging system.

[0005] Optionally, the support members form support channel steels, and two support members arranged opposite to each other are respectively provided at the web positions of each of the steel box girders.

[0006] Optionally, the spacing distance between the two supporting members arranged opposite to each other at the web position of each steel box girder is 2-3 cm, and the height of each supporting member is higher than the thickness of the concrete bridge deck.

[0007] Optionally, the length of the main beam is not less than the width of the concrete bridge deck, one end of the support member is welded and fixed to the steel box beam, and the other end is welded and fixed to the main beam.

[0008] Optionally, the first double steel pipe and the first square wood are fixedly connected by iron wire.

[0009] Optionally, a lifting ring is provided on the outer side of the top plate of the outer side beam of the steel box beam located on both sides, a second square wood is provided in the lifting ring, and a wooden formwork is provided between the lifting ring and the main beam.

[0010] Optionally, a second tension screw and a second double steel pipe are provided on the side of the lifting ring facing away from the steel box girder to increase the stability of the second square timber.

[0011] Optionally, the jacking bridge deck formwork further includes:

[0012] A vertical rod, which is arranged on a side of the second tension screw rod away from the lifting ring, and extends in a vertical direction and passes through the second square wood;

[0013] A plurality of horizontal rods, the horizontal rods are arranged at intervals in the extending direction of the vertical rods, and each of the horizontal rods is connected to the vertical rods respectively, and the horizontal rods extend in the horizontal direction;

[0014] An anti-throwing net is connected to the vertical pole and extends along the length direction of the vertical pole.

[0015] Optionally, a diagonal brace is provided between the vertical pole and the main beam, the diagonal brace is connected to the vertical pole via a fastener, and the diagonal brace is connected to the main beam by welding.

[0016] A second aspect of the utility model provides an oblique U-shaped steel bridge, which adopts the top-pushing bridge deck formwork described in the above embodiment to carry out reverse hanging construction.

[0017] The utility model of the top-pushing bridge deck formwork adopts a reverse hanging system formed by a support member, a main beam, a first pair of tension screws, a first pair of steel pipes and a first square wood, which facilitates reverse hanging construction while ensuring the effective combination of the steel box beam and concrete, and reduces cracks in the concrete caused by the top force generated by the top-pushing equipment. In addition, the utility model adjusts the construction sequence of the bridge deck concrete by setting up the template reverse hanging system, reduces the operation time above the high-speed road surface, shortens the construction period, improves safety, and ensures the safety of traffic on the bridge.

[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] Figure 1 is a cross-sectional view of a bridge deck according to an embodiment of the utility model;

[0021] Figure 2It is an end view of a top-pushing bridge deck template according to an embodiment of the utility model;

[0022] Figure 3 It is a top view of the jacking bridge deck template according to an embodiment of the utility model;

[0023] Figure 4 It is a protective structure diagram of a jacking bridge deck formwork according to an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the connection between the second square wood and the hanging ring according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] Support member 1; steel box girder 2; top plate 3; web plate 4; main beam 5; first tension screw rod 6; first pair of steel pipes 7; first square timber 8; concrete bridge deck 9; lifting ring 10; second square timber 11; wooden formwork 12; second tension screw rod 13; second pair of steel pipes 14; vertical pole 15; horizontal pole 16; anti-throw net 17; diagonal brace 18. DETAILED DESCRIPTION

[0027] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0028] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0030] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0031] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0032] The following is a detailed description of the jacking bridge deck formwork according to an embodiment of the utility model in conjunction with the accompanying drawings.

[0033] like Figure 2As shown, the jacking bridge deck formwork according to the embodiment of the utility model includes a plurality of support members 1, a main beam 5, a plurality of first tension screws 6, a plurality of first double steel pipes 7 and a first square timber 8.

[0034] Specifically, a plurality of support members 1 are arranged at intervals at the top plate 3 of each steel box girder 2, and are respectively opposite to the web 4 of the corresponding steel box girder 2, and one end of the support member 1 is connected to the corresponding steel box girder 2. The main beam 5 is arranged on the side of the support member 1 away from the steel box girder 2, the main beam 5 extends in the horizontal direction, the support member 1 extends in the vertical direction, and the main beam 5 is connected to each support member 1. A plurality of first tension screws 6 are distributed at intervals along the extension direction of the main beam 5, and each first tension screw 6 passes through the main beam 5 and extends toward one side of the steel box girder 2. A first double steel pipe 7 is provided on the side of each first tension screw 6 facing the steel box girder 2, and the first double steel pipe 7 is tied to the main beam 5 through the first double steel pipe 7. The first square wood 8 is arranged on the first double steel pipe 7, and the support member 1, the main beam 5, the first tension screw 6, the first double steel pipe 7 and the first square wood 8 form an anti-hanging system.

[0035] In other words, see Figure 2 and Figure 3 According to the embodiment of the utility model, the jacking bridge deck formwork is mainly composed of a plurality of support members 1, a main beam 5, a plurality of first tension screws 6, a plurality of first double steel pipes 7 and a first square wood 8. Among them, a plurality of support members 1 are arranged at intervals at the top plate 3 of each steel box girder 2, and are respectively opposite to the web 4 of the corresponding steel box girder 2. One end of the support member 1 is connected to the corresponding steel box girder 2. The main beam 5 is installed on the side of the support member 1 away from the steel box girder 2, the main beam 5 extends in the transverse direction, the support member 1 extends vertically, and the main beam 5 is connected to each support member 1.

[0036] A plurality of first tension screws 6 can be distributed at intervals along the extension direction of the main beam 5, and each first tension screw 6 can pass through the main beam 5 and extend toward one side of the steel box beam 2. A first double steel pipe 7 is provided on one side of each first tension screw 6 facing the steel box beam 2, and the first double steel pipe 7 is tied to the main beam 5 through the first double steel pipe 7. The first square wood 8 is provided on the first double steel pipe 7, and the support 1, the main beam 5, the first tension screw 6, the first double steel pipe 7 and the first square wood 8 form an anti-hanging system.

[0037] Since the bridge of the utility model adopts a steel-concrete composite beam, the U-shaped steel box beam 2 is effectively combined with the cast-in-place concrete bridge deck 9 by arranging shear nails at the top plate 3. Therefore, in order to reduce the construction time above the highway after the steel box beam 2 is pushed into place, the template installation of the bridge deck concrete and the steel plate binding are completed in advance before the pushing construction.

[0038] In addition, since the box girder is a U-shaped steel box girder 2, there is no top plate 3 inside the box girder and between each chamber box girder, and the top plate 3 exists only in a local position. After the top is pushed into place, there is a highway below, and there is no space for the construction of a ground-type steel pipe support frame. Therefore, the bridge deck concrete (concrete bridge deck 9) is constructed by the reverse hanging method (concrete bridge deck 9 see Figure 1 The bridge deck concrete formwork support adopts the reverse hanging method, which is different from the conventional ground-type steel pipe support formwork support system. The formwork support of the reverse hanging system needs to be designed, and then through design calculation, the strength, rigidity and stability of each component can be met before it can be organized and implemented.

[0039] Therefore, according to the embodiment of the utility model, the jacking bridge deck formwork adopts the reverse hanging system formed by the support member 1, the main beam 5, the first tension screw 6, the first double steel pipe 7 and the first square wood 8, which facilitates the reverse hanging construction while ensuring the effective combination of the steel box beam 2 and the concrete, and reduces the cracks in the concrete caused by the jacking force generated by the jacking equipment. In addition, the utility model adjusts the construction sequence of the bridge deck concrete by setting the template reverse hanging system, reduces the operation time above the high-speed road surface, shortens the construction period, improves safety, and ensures the safety of traffic on the bridge.

[0040] In some specific embodiments of the utility model, the support member 1 forms a support channel steel, and two support members 1 arranged opposite to each other are respectively provided at the position of the web 4 of each steel box girder 2. The spacing distance between the two support members 1 arranged opposite to each other at the position of the web 4 of each steel box girder 2 is 2-3 cm, and the height of each support member 1 is higher than the thickness of the concrete bridge deck 9. The length of the main beam 5 is not less than the width of the concrete bridge deck 9, one end of the support member 1 is welded and fixed to the steel box girder 2, and the other end is welded and fixed to the main beam 5. The first double steel pipe 7 and the first square wood 8 are fixedly connected by iron wire.

[0041] That is to say, Figure 2 As shown, the utility model adopts a support member 1, a main beam 5, a first pair of tension screws 6, a first double steel pipe 7 and a first square wood 8 to form an anti-hanging system. Among them, the bridge deck concrete formwork installation process is a construction process after the steel box beam 2 is assembled and tested and before the steel box beam 2 is pushed. The support member 1 can be a supporting short channel steel, and two supporting members 1 (supporting short channel steel) arranged opposite to each other can be respectively set at the position of the web 4 of each steel box beam 2. The spacing distance between the two supporting members 1 arranged opposite to each other at the position of the web 4 of each steel box beam 2 is 2-3cm, and the height of each supporting member 1 is higher than the thickness of the concrete bridge deck 9. That is, two opposite vertical supporting short channel steels (support members 1) are set at the position of the top plate 3 of the steel box beam 2 opposite to the web 4, and the spacing between the webs 4 of the channel steel is 2cm-3cm. The height of the channel steel is higher than the thickness of the concrete, and the channel steel support is welded and fixed to the steel box beam 2.

[0042] The length of the main beam 5 is not less than the width of the concrete bridge deck 9. One end of the support 1 is welded and fixed to the steel box beam 2, and the other end is welded and fixed to the main beam 5. The first double steel pipe 7 is fixedly connected to the first square wood 8 by wire. After the vertical channel steel support (support 1) is completed, the main beam 5 of the transverse bridge double channel steel is installed at the top position. The interval between the channel steel webs 4 is 2cm-3cm, so as to install the first tension screw 6. The length of the main beam 5 is not less than the width of the bridge deck concrete, and the main beam 5 is welded and fixed to the vertical channel steel support. After the double channel steel main beam 5 is welded and fixed, the longitudinal bridge double steel pipe (first double steel pipe 7) is installed, and the first double steel pipe 7 and the main beam 5 are tied by the first tension screw 6. The first square wood 8 is placed on the first double steel pipe 7, and the template is placed on the first square wood 8. The first double steel pipe 7 and the first square wood 8, as well as the first square wood 8 and the template, are fixed by wire.

[0043] According to one embodiment of the utility model, a lifting ring 10 is provided on the outer side of the outer beam top plate 3 of the steel box girder 2 located on both sides, a second square wood 11 is provided in the lifting ring 10, and a wooden formwork 12 is provided between the lifting ring 10 and the main beam 5.

[0044] In other words, due to the width of the top plate 3 of the outer beam, there is no support point under the bridge deck concrete, and the cantilever end needs to be poured, where Figure 2 and Figure 4 A lifting ring 10 can be welded on the outer side of the top plate 3 of the outer side beam of the steel box beam 2 on both sides. Figure 5 As shown, the second square wood 11 is inserted into the lifting ring 10, and a wooden template 12 is set between the lifting ring 10 and the main beam 5. The lifting ring 10 is made of plain round steel bars, and the diameter is determined by calculation, but should not be less than 16mm. After the lifting ring 10 is welded, the second square wood 11 is inserted into the lifting ring 10. By using the principle of lever, the second square wood 11 can bear a certain load, so as to complete the construction of the concrete bridge deck 9.

[0045] According to one embodiment of the utility model, Figure 4 As shown, a second tension screw 13 and a second double steel pipe 14 are provided on the side of the lifting ring 10 facing away from the steel box girder 2 to increase the stability and safety of the second square timber 11 .

[0046] In some specific embodiments of the present utility model, the jacking bridge deck formwork further includes a vertical pole 15 , a plurality of horizontal poles 16 and an anti-throwing net 17 .

[0047] Specifically, the vertical rod 15 is arranged on the side of the second tension screw 13 away from the lifting ring 10, and the vertical rod 15 extends in the vertical direction and passes through the second square wood 11. The horizontal rods 16 are arranged at intervals in the extension direction of the vertical rod 15, and each horizontal rod 16 is connected to the vertical rod 15, and the horizontal rod 16 extends in the horizontal direction. The anti-throwing net 17 is connected to the vertical rod 15 and extends along the length direction of the vertical rod 15. A diagonal brace 18 is provided between the vertical rod 15 and the main beam 5, and the diagonal brace 18 is connected to the vertical rod 15 by a fastener, and the diagonal brace 18 is welded to the main beam 5.

[0048] That is, see Figure 2 and Figure 4 The top-pushing bridge deck formwork also includes a vertical pole 15, a plurality of horizontal poles 16 and an anti-throwing net 17. The vertical pole 15 is installed on the side of the second tension screw 13 away from the lifting ring 10, and the vertical pole 15 extends in the vertical direction and passes through the second square wood 11. The horizontal poles 16 can be arranged at intervals in the extension direction of the vertical pole 15, and each horizontal pole 16 is respectively connected to the vertical pole 15, and the horizontal pole 16 can extend in the horizontal direction. The anti-throwing net 17 is connected to the vertical pole 15, and the anti-throwing net 17 can extend along the length direction of the vertical pole 15. A diagonal brace 18 is arranged between the vertical pole 15 and the main beam 5, and the diagonal brace 18 can be connected to the vertical pole 15 by fasteners, and the diagonal brace 18 is welded to the main beam 5.

[0049] like Figure 2 and Figure 4 As shown, after the construction of the main beam 5 is completed, the construction of the side guardrails is carried out simultaneously. The guardrails are protected by fastener-type steel pipes, and an anti-throwing net 17 is set on the outside of the guardrails to prevent people and objects from falling below during the construction process. The vertical poles 15 and the diagonal braces 18 can be made of steel pipes. The vertical poles 15 and the diagonal braces 18 are connected by fasteners, and the diagonal braces 18 and the main beam 5 are connected by welding. The vertical poles 15 are not less than 1.2m above the concrete surface, and there are not less than two cross bars (horizontal bars 16). The utility model welds the vertical poles 15 to the main beam 5, and at the same time, by setting a diagonal brace 18, one end of the diagonal brace 18 is connected to the vertical poles 15 and the cross bar fasteners, and the other end is welded and fixed to the channel steel main beam 5, so as to achieve effective protection of the guardrail.

[0050] In summary, according to the jacking bridge deck formwork of the embodiment of the utility model, the reverse hanging system formed by the support member 1, the main beam 5, the first tension screw 6, the first double steel pipe 7 and the first square wood 8 is adopted, which facilitates the reverse hanging construction while ensuring the effective combination of the steel box beam 2 and the concrete, and reduces the cracks in the concrete caused by the jacking force generated by the jacking equipment. In addition, the utility model adjusts the construction sequence of the bridge deck concrete by setting the template reverse hanging system, reduces the operation time above the high-speed road surface, shortens the construction period, improves safety, and ensures the safety of traffic on the bridge.

[0051] Of course, for those skilled in the art, other structures and working principles of the jacking bridge deck formwork are understandable and achievable, and will not be described in detail in the present utility model.

[0052] According to the second aspect of the utility model, an oblique U-shaped steel bridge is provided, which adopts the top-pushing bridge deck template in the above embodiment for reverse-hanging construction. Since the top-pushing bridge deck template according to the utility model has the above-mentioned technical effects, the oblique U-shaped steel bridge according to the embodiment of the utility model should also have corresponding technical effects, that is, the oblique U-shaped steel bridge in the embodiment of the utility model adopts the top-pushing bridge deck template in the above embodiment for reverse-hanging construction, which is convenient for reverse-hanging construction while ensuring the effective combination of the steel box girder 2 and concrete, and reducing cracks in the concrete caused by the top force generated by the top-pushing equipment. In addition, the utility model adjusts the construction sequence of the bridge deck concrete by setting a template reverse-hanging system, reduces the operation time above the high-speed road surface, shortens the construction period, improves safety, and ensures the safety of traffic on the bridge.

[0053] Of course, for those skilled in the art, other structures and working principles of the skew U-shaped steel bridge are understandable and achievable, and will not be described in detail in the present utility model.

[0054] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A bridge deck formwork, characterized in that: include: A plurality of support members, wherein the plurality of support members are arranged at intervals at the top plate position of each steel box girder and are respectively opposite to the web plate of the corresponding steel box girder, and one end of the support member is connected to the corresponding steel box girder; A main beam, the main beam is arranged on a side of the support member away from the steel box beam, the main beam extends in the transverse direction, the support member extends in the vertical direction, and the main beam is connected to each of the support members; A plurality of first tie screws, wherein the plurality of first tie screws are spaced apart and distributed along the extension direction of the main beam, and each of the first tie screws passes through the main beam and extends toward one side of the steel box beam; A plurality of first double steel tubes, each of the first pair of tension screws is provided with the first double steel tube on one side facing the steel box girder, and the first double steel tube is tied to the main girder through the first double steel tube; A first square timber, wherein the first square timber is arranged on the first double steel pipe, and the support member, the main beam, the first pair of tension screws, the first double steel pipe and the first square timber form an anti-hanging system.

2. The jacking bridge deck formwork according to claim 1 is characterized in that: The support members form support channel steels, and two support members arranged opposite to each other are respectively provided at the web positions of each steel box girder.

3. The jacking bridge deck formwork according to claim 2 is characterized in that: The spacing distance between the two supporting members arranged opposite to each other at the web position of each steel box girder is 2-3 cm, and the height of each supporting member is higher than the thickness of the concrete bridge deck.

4. The jacking bridge deck formwork according to claim 1 is characterized in that: The length of the main beam is not less than the width of the concrete bridge deck; one end of the support is welded and fixed to the steel box beam, and the other end is welded and fixed to the main beam.

5. The jacking bridge deck formwork according to claim 1 is characterized in that: The first double steel pipes are fixedly connected to the first square wood by iron wires.

6. The jacking bridge deck formwork according to claim 1 is characterized in that: A lifting ring is arranged on the outer side of the top plate of the outer side beam of the steel box beam located on both sides, a second square wood is arranged in the lifting ring, and a wooden template is arranged between the lifting ring and the main beam.

7. The jacking bridge deck formwork according to claim 6 is characterized in that: A second tension screw and a second double steel pipe are provided on the side of the lifting ring facing away from the steel box girder to increase the stability of the second square timber.

8. The jacking bridge deck formwork according to claim 7 is characterized in that: Also includes: A vertical rod, which is arranged on a side of the second tension screw rod away from the lifting ring, and extends in a vertical direction and passes through the second square wood; A plurality of horizontal rods, the horizontal rods are arranged at intervals in the extending direction of the vertical rods, and each of the horizontal rods is connected to the vertical rods respectively, and the horizontal rods extend in the horizontal direction; An anti-throwing net is connected to the vertical pole and extends along the length direction of the vertical pole.

9. The jacking bridge deck formwork according to claim 8, characterized in that: An oblique brace is provided between the vertical pole and the main beam, the oblique brace is connected to the vertical pole via a fastener, and the oblique brace is connected to the main beam by welding.

10. A skew U-shaped steel bridge, characterized in that: The top-pushing bridge deck formwork described in any one of claims 1 to 9 is used for reverse hanging construction.

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