Reinforcing structure for Y-structure cantilever formwork of bridge pier

Abstract

The utility model relates to the technical field of formwork reinforcing structures, and provides a pier Y-structure cantilever formwork reinforcing structure which comprises a main connecting assembly arranged between a formwork support and a corresponding cantilever pre-pouring section, and the main connecting assembly comprises two main connecting beams and a plurality of connecting anchor rods; the two main connecting beams are connected to the sides, deviating from each other, of the formwork support and the corresponding cantilever pre-pouring section correspondingly. The connecting anchor rod penetrates through the cantilever pre-pouring section and the formwork support, and the two ends of the connecting anchor rod are connected to the two main connecting beams through anchorage devices correspondingly. The formwork support has the effect that the formwork support is installed on the pier more stably.

Description

Technical Field

[0001] The present application relates to the field of formwork reinforcement structures, and in particular to a pier Y-structure cantilever formwork reinforcement structure. Background Art

[0002] The mid-span tied arch bridge is a common bridge structure among the current river-spanning bridges. Figure 1 During the pouring construction of the piers of the mid-span tied arch bridge, two outward-inclined cantilever structures need to be poured on opposite sides of the top of the pier body 1; the pier body 1 and the two cantilever structures are in a Y-shape. In the related art, when pouring the cantilever structure, a segmented pouring method is usually adopted. Before pouring the cantilever post-casting section, it is necessary to first support the formwork support 2 at the bottom of the cantilever pre-casting section 11 and extend one end of the formwork support 2 to the bottom of the cantilever pre-casting section 11; then support the formwork structure for pouring the cantilever post-casting section on the formwork support 2 and tie the steel bar structure, and finally carry out the pouring construction of the cantilever post-casting section.

[0003] With respect to the above-mentioned related technologies, the formwork support of the cantilever post-cast section is currently only fixed on the pier body through a pre-embedded structure, and its overall structural stability is relatively insufficient. Therefore, there is room for improvement. Utility Model Content

[0004] In order to improve the structural stability of the two formwork supports on the top of the pier body so that the two formwork supports can be more firmly installed on the pier, the present application provides a pier Y-structure cantilever formwork reinforcement structure.

[0005] The present application provides a pier Y-structure cantilever formwork reinforcement structure, which adopts the following technical solution:

[0006] A bridge pier Y-structure cantilever formwork reinforcement structure includes a main connection component arranged between a formwork support and a corresponding cantilever pre-cast section, the main connection component includes two main connection beams and a plurality of connection anchor rods, the two main connection beams are respectively connected to the formwork support and the corresponding cantilever pre-cast section on the sides facing away from each other; the connection anchor rod is penetrated through the cantilever pre-cast section and the formwork support, and both ends of the connection anchor rod are respectively connected to the two main connection beams through anchors.

[0007] By adopting the above technical solution, by passing the connecting anchor rod through the cantilever pre-cast section and the formwork support, and tensioning and connecting the two ends of the connecting anchor rod to the main connecting beam on the side opposite to each other between the formwork support and the cantilever pre-cast section through anchors, and connecting and fixing the formwork support to the cantilever pre-cast section by the main connecting assembly, it is beneficial to improve the overall structural stability of the formwork support, and facilitate the two formwork supports to be more firmly installed on the top of the pier body.

[0008] Preferably, a plurality of embedded parts are pre-embedded in the cantilever precast section corresponding to the main connecting beam, and the plurality of embedded parts are welded and fixed to the main connecting beam.

[0009] By adopting the above technical solution, when installing the main connecting beam on the cantilever first cast section, the main connecting beam is welded and fixed to the embedded parts on the cantilever first cast section, so that the main connecting beam is firmly connected to the cantilever first cast section, which is conducive to better limiting the displacement of the main connecting beam.

[0010] Preferably, the bottom end of the embedded part is fixed by welding to the steel bar structure in the cantilever first casting section.

[0011] By adopting the above technical scheme, the embedded parts can be firmly connected to the steel structure of the cantilever first pouring section. On the one hand, it is beneficial to limit the displacement of the embedded parts during the subsequent pouring of the cantilever first pouring section. On the other hand, the subsequent external load acting on the embedded parts can be timely transmitted to the steel structure of the cantilever first pouring section through the embedded parts, thereby reducing the external load acting on the embedded parts for a long time, which may cause the embedded parts and the concrete structure around the embedded parts to be easily deformed and damaged.

[0012] Preferably, a plurality of connecting sleeves are pre-buried in the cantilever precast section corresponding to the plurality of connecting anchor rods; the connecting anchor rods are all inserted into the corresponding connecting sleeves.

[0013] By adopting the above technical solution, when installing the connecting anchor rod, the connecting anchor rod is inserted into the corresponding connecting sleeve on the first cast section of the cantilever beam, so that the connecting anchor rod can be inserted into the first cast section of the cantilever, without the need for drilling construction on the first cast section of the cantilever, which facilitates the installation of the connecting anchor rod.

[0014] Preferably, the connecting sleeves are all connected and fixed to the steel bar structure of the cantilever precast section.

[0015] By adopting the above technical solution, the connection sleeve can be limited, and the connection sleeve can be prevented from slipping when the cantilever first casting section is cast later; thus, the connection sleeve can be better formed in the cantilever first casting section.

[0016] Preferably, annular water-stop wing plates are coaxially connected to the outer peripheries of both ends of the connecting sleeve.

[0017] By adopting the above technical solution, by setting the annular water-stop wing plates at both ends of the connecting sleeve, it is beneficial to form a water-stop structure at both ends of the connecting sleeve, thereby extending the path for external water sources to enter the interior of the cantilever first pouring section, and reducing the external water source from entering the interior of the cantilever first pouring section to corrode the steel structure.

[0018] Preferably, it also includes a secondary connection component, which is located between two formwork supports. The secondary connection component includes two secondary connection beams and a plurality of steel strands. The two secondary connection beams are respectively arranged at one end of the two formwork supports away from each other, and both ends of the secondary connection beams extend out from both sides of the formwork supports to form cantilevered ends, and both ends of the steel strands are respectively connected to the cantilevered ends of the two secondary connection beams through anchors.

[0019] By adopting the above technical solution, the connection and reinforcement of the two formwork supports are achieved, which is beneficial to further improve the structural stability of the two formwork supports on the top of the pier body.

[0020] Preferably, the secondary connecting beams are all welded and fixed to the corresponding formwork supports.

[0021] By adopting the above technical solution, on the one hand, a tight connection between the secondary connecting beam and the formwork support is achieved to limit the displacement of the secondary connecting beam, and on the other hand, the overall structural stability of the formwork support can be improved through the secondary connecting beam.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Use the main connection component to connect and fix the formwork support to the bottom side of the corresponding cantilever first pouring section; at the same time, use the secondary connection component to connect and limit the two formwork supports, which is beneficial to improve the stability of the formwork support structure, so that the two formwork supports can be more firmly supported on the top of the pier body.

[0024] 2. By welding and fixing the main connecting beam on the cantilever first pouring section to a number of embedded parts pre-embedded in the cantilever first pouring section in advance, the main connecting beam is limited and fixed, which is conducive to more stable installation of the main connecting beam on the cantilever first pouring section.

[0025] 3. By pre-embedding a connecting sleeve for the connecting anchor rod to pass through in the cantilever first pouring section, when the connecting anchor rod is subsequently installed, the connecting anchor rod is passed through the connecting sleeve, so that the connecting anchor rod can be passed through the cantilever first pouring section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This application is used to illustrate the bridge pier and the schematic diagram installed on the bridge pier and the formwork support.

[0027] Figure 2 It is a schematic diagram used to illustrate bridge piers, formwork supports and reinforcement structures in an embodiment of the present application.

[0028] Figure 3 It is a structural schematic diagram used to illustrate the embedded parts in the embodiment of the present application.

[0029] Figure 4 It is a structural schematic diagram used to illustrate the connecting sleeve in an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Pier body; 11. Cantilever precast section; 12. Embedded parts; 121. Connecting plate; 122. Connecting ribs; 13. Connecting sleeve; 131. Annular water stop wing plate; 2. Formwork support; 3. Main connecting beam; 31. Connecting anchor rod; 4. Secondary connecting beam; 41. Steel strand. DETAILED DESCRIPTION

[0032] The following is combined with Figure 2-4 This application is described in further detail.

[0033] The present application embodiment discloses a pier Y-structure cantilever formwork reinforcement structure, referring to Figure 2 , including a main connecting component arranged between the cantilever pre-casting section 11 and the corresponding formwork support 2 and a secondary connecting component arranged between the two formwork supports 2, the main connecting component is used to connect the cantilever pre-casting section 11 and the corresponding formwork support 2; the secondary connecting component is used to connect the two formwork supports 2.

[0034] The main connection assembly includes two main connection beams 3 and a plurality of connection anchor rods 31; the two main connection beams 3 are respectively located on the side of the cantilever precast section 11 and the formwork support 2 that are away from each other; the plurality of connection anchor rods 31 are evenly distributed along the length direction of the main connection beams 3. In this embodiment, the main connection beams 3 are double-jointed I-beams, and the connection anchor rods 31 are precision-rolled threaded steel bars. The connection anchor rods 31 are all passed through the cantilever precast section 11 and the formwork support 2, and both ends of the connection anchor rods 31 are anchored and fixed to the main connection beams 3 on the side of the cantilever precast section 11 and the formwork support 2 that are away from each other through anchors, so that the cantilever precast section 11 and the formwork support 2 are connected through the main connection assembly, which is beneficial to the connection limit of the formwork support 2 and improves the structural stability of the formwork support 2.

[0035] Reference Figure 2 and Figure 3, the main connecting beam 3 located on the formwork support 2 is welded and fixed to the formwork support 2; a plurality of embedded parts 12 are pre-embedded in the cantilever precast section 11 corresponding to the main connecting beam 3; the embedded part 12 includes a connecting plate 121, and a plurality of connecting ribs 122 are vertically welded to the bottom side of the connecting plate 121, and the end of the connecting rib 122 away from the connecting plate 121 is welded and fixed to the steel structure inside the cantilever precast section 11. The main connecting beam 3 located in the cantilever precast section 11 is welded and fixed to the connecting plate 121 of the plurality of embedded parts 12. Through the above arrangement, the two main connecting beams 3 are firmly connected to the formwork support 2 and the cantilever precast section 11 respectively. The connecting ribs 122 of the embedded part 12 are welded and fixed to the internal steel bars of the cantilever precast section 11. On the one hand, the embedded parts 12 are limited and fixed to limit their displacement during the casting process of the cantilever first casting section 11. On the other hand, the subsequent external loads acting on the embedded parts 12 can be promptly transmitted to the steel structure of the cantilever first casting section 11 through the connecting ribs 122 on the embedded parts 12, thereby reducing the external loads acting on the embedded parts 12 for a long time, which may cause the embedded parts 12 to be easily deformed and damaged.

[0036] Reference Figure 2 and Figure 4 , the cantilever precast section 11 corresponds to a number of connecting anchor rods 31 and is pre-buried with a number of connecting sleeves 13, and the connecting sleeves 13 are all tied and connected with the steel structure inside the cantilever precast section 11. The connecting anchor rods 31 are all inserted into the corresponding connecting sleeves 13. When installing the connecting anchor rods 31, the connecting anchor rods 31 are inserted into the corresponding connecting sleeves 13 on the cantilever precast section 11, so that the connecting anchor rods 31 can be inserted into the cantilever precast section 11, which is conducive to reducing the installation difficulty of the connecting anchor rods 31. By tying and connecting the connecting sleeves 13 with the steel structure inside the cantilever precast section 11, on the one hand, the limiting fixation of the connecting sleeves 13 is achieved, and the displacement of the connecting sleeves 13 is limited when the cantilever precast section 11 is subsequently cast; on the other hand, it is convenient for the connecting sleeves 13 to transfer the subsequent externally applied load to the steel structure of the cantilever precast section 11 in a timely manner, reducing the subsequent connection sleeves 13 and the surrounding concrete of the connecting sleeves 13. The situation that it is easy to damage.

[0037] Both ends of the connecting sleeve 13 are provided with annular water-stop wing plates 131; the inner periphery of the annular water-stop wing plates 131 is welded and fixed to the outer periphery of the connecting sleeve 13. By providing the annular water-stop wing plates 131 at both ends of the connecting sleeve 13, the connecting sleeve 13 can form a water-stop structure at both ends of the connecting sleeve 13 through the annular water-stop wing plates 131 at both ends of the connecting sleeve 13, extending the path for subsequent external water sources to enter the interior of the cantilever beam cast-in-place section, thereby making the steel structure in the cantilever precast section 11 less likely to be corroded by the external water source.

[0038] Reference Figure 2The secondary connection assembly includes two secondary connection beams 4 and a plurality of steel strands 41. In this embodiment, the secondary connection beams 4 are double-jointed I-beams; the two secondary connection beams 4 are respectively located at one end of the two formwork supports 2 that are far away from each other, and the secondary connection beams 4 are welded and fixed to the formwork supports 2. The two ends of the secondary connection beams 4 extend out of the opposite sides of the formwork supports 2 to form cantilevered ends. Both ends of the steel strands 41 are anchored to the cantilevered ends of the two secondary connection beams 4 through anchors. The connection and limiting of the two formwork supports 2 by the secondary connection assembly is conducive to further improving the structural stability of the two formwork supports 2.

[0039] The implementation principle of the embodiment of the present application is as follows: after the two formwork supports 2 at the top of the pier body 1 are set up, the main connecting beam 3 is respectively installed and fixed on the side of the cantilever precast section 11 and the formwork support 2 that are away from each other. The connecting anchor rod 31 is inserted into the corresponding connecting sleeve 13 and the formwork support 2 on the cantilever precast section 11, and the two ends of the connecting beam are respectively connected to the two main connecting beams 3 through anchors to complete the installation of the main connection assembly. The secondary connecting beams 4 are respectively welded at the ends of the two formwork supports 2 that are away from each other, and the two ends of a number of steel strands 41 are respectively connected to the cantilevered ends of the two secondary connecting beams 4 through anchors to complete the installation of the secondary connection assembly. The formwork support 2 is connected and fixed to the bottom side of the corresponding cantilever precast section 11 through the main connection assembly; connecting the two formwork supports 2 through the secondary connection assembly is conducive to improving the structural stability of the two formwork supports 2, so that the two formwork supports 2 can be more stably supported on the top of the pier body 1.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bridge pier Y-structure cantilever formwork reinforcement structure, characterized by: The invention comprises a main connection component arranged between a formwork support (2) and a corresponding cantilever precast section (11), wherein the main connection component comprises two main connection beams (3) and a plurality of connection anchor rods (31), wherein the two main connection beams (3) are respectively connected to the formwork support (2) and the corresponding cantilever precast section (11) on the sides facing away from each other; the connection anchor rods (31) are penetrated through the cantilever precast section (11) and the formwork support (2), and both ends of the connection anchor rods (31) are respectively connected to the two main connection beams (3) through anchors.

2. A bridge pier Y-structure cantilever formwork reinforcement structure according to claim 1, characterized in that: A plurality of embedded parts (12) are pre-embedded in the cantilever precast section (11) corresponding to the main connecting beam (3), and the plurality of embedded parts (12) are welded and fixed to the main connecting beam (3).

3. The Y-shaped cantilever formwork reinforcement structure of a pier according to claim 2 is characterized by: The bottom end of the embedded part (12) is welded and fixed to the steel bar structure in the cantilever first casting section (11).

4. The Y-shaped cantilever formwork reinforcement structure of a pier according to claim 1 is characterized by: A plurality of connecting sleeves (13) are pre-buried in the cantilever precast section (11) corresponding to the plurality of connecting anchor rods (31); the connecting anchor rods (31) are all inserted into the corresponding connecting sleeves (13).

5. The Y-shaped cantilever formwork reinforcement structure of a bridge pier according to claim 4 is characterized by: The connecting sleeves (13) are all connected and fixed to the steel bar structure of the cantilever precast section (11).

6. The Y-shaped cantilever formwork reinforcement structure of a bridge pier according to claim 4 is characterized by: The outer peripheries of both ends of the connecting sleeve (13) are coaxially connected with an annular water-stopping wing plate (131).

7. The Y-shaped cantilever formwork reinforcement structure of a bridge pier according to claim 1 is characterized by: The invention also comprises a secondary connection component, wherein the secondary connection component is located between two formwork supports (2), and the secondary connection component comprises two secondary connection beams (4) and a plurality of steel strands (41). The two secondary connection beams (4) are respectively arranged at one end of the two formwork supports (2) which are away from each other, and the two ends of the secondary connection beams (4) respectively extend out of the two sides of the formwork supports (2) to form cantilevered ends, and the two ends of the steel strands (41) are respectively connected to the cantilevered ends of the two secondary connection beams (4) through anchors.

8. The Y-shaped cantilever formwork reinforcement structure of a bridge pier according to claim 7 is characterized by: The auxiliary connection beams (4) are all welded and fixed to the corresponding formwork brackets (2).

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