Large-cantilever prefabricated assembly type bent cap mounting device

Abstract

The utility model relates to the technical field of bridge construction, and provides a large-cantilever prefabricated assembly type cover beam mounting device which comprises a base, a plurality of connecting rods, a plurality of connecting rods, a plurality of connecting rods, a plurality of connecting rods, a plurality of connecting rods and a plurality of connecting rods, wherein the length direction of the base is consistent with the mounting length direction of a prefabricated cover beam; a supporting frame is arranged on the base and comprises stand columns, horizontal rods and diagonal web members, the stand columns are vertically connected up and down to change the height of the supporting frame, and every two adjacent stand columns are connected into a whole through the horizontal rods and the diagonal web members; the distribution beam is arranged above the support frame and is used for adjusting the height and uniformly distributing the load on the support frame; and the unloading block is arranged above the distribution beam, and the top end of the unloading block is used for making contact with the bottom of the prefabricated cover beam. According to the device, the stability and the safety during assembly of the prefabricated cover beam can be improved, the device is faster to mount and dismount, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an installation device for a large-cantilever precast and assembled capping beam. Background Art

[0002] As one of the main load-bearing members of precast and assembled bridges, the capping beam plays a role in connecting the upper and lower parts. However, the construction of urban bridges is greatly affected by traffic, electrical pipelines and the surrounding environment. Cast-in-place concrete capping beams in the forms of long cantilevers, large volumes and large self-weights are no longer suitable for urban bridge construction. With the improvement of domestic assembly technology, the mechanical properties and seismic resistance of precast capping beams can meet the requirements of bridge construction and become a solution to replace the construction of urban cast-in-place capping beams. When assembling precast capping beams on site, a support frame needs to be set at the cantilever section of the capping beam to maintain the stability of capping beam installation. After the construction of the whole capping beam is completed (prestressing tensioning, grouting, wet joint pouring), the installation operation of the next section of the capping beam is carried out. However, at present, the installation of the support frame for precast capping beams is rather cumbersome, with poor stability and low construction efficiency.

[0003] Therefore, in view of the above problems, an installation device for a large-cantilever precast and assembled capping beam is proposed to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model develops an installation device for a large-cantilever precast and assembled capping beam, which can improve the stability and safety during the assembly of precast capping beams, and the installation and disassembly of the device are faster, thus improving the construction efficiency.

[0005] To achieve the above object, the utility model is realized through the following technical solutions:

[0006] An installation device for a large-cantilever precast and assembled capping beam, comprising: a base, the length direction of the base is consistent with the length direction of the installation of the precast capping beam, and the base is arranged on the side of the pier column;

[0007] A support frame is arranged on the base, the support frame includes columns, horizontal bars and diagonal web members, the height of the support frame is changed by vertically connecting the columns up and down, and two adjacent columns are connected into a whole through horizontal bars and diagonal web members;

[0008] A distribution beam is arranged above the support frame, which is used to adjust the height and evenly distribute the load on the support frame;

[0009] A drop block is arranged above the distribution beam, and the top end of the drop block is used to contact the bottom of the precast capping beam.

[0010] Preferably, the support frame also includes a connecting plate, which is arranged at the upper and lower ends of the column, and the plane of the connecting plate is perpendicular to the axis of the column; connecting holes are opened on the connecting plate, and the connecting holes of the connecting plate that are in contact with the upper and lower parts when the column is installed correspond to each other, and are connected by connecting bolts; reinforcing ribs are arranged at the connection between the connecting plate and the column.

[0011] Preferably, a connector is pre-buried above the base, and the connector is used to connect a connecting plate at the lower end of the bottom column.

[0012] Preferably, the horizontal rods include transverse rods and longitudinal rods, the longitudinal rods are used to connect the columns arranged along the length direction of the prefabricated cap beam installation, and the transverse rods are used to connect the columns arranged perpendicular to the length direction of the prefabricated cap beam installation.

[0013] Preferably, a plurality of connecting ribs are provided on the upright column, and circular holes are provided on the connecting ribs, and the connecting ribs are used to connect the transverse rods, the longitudinal rods and the diagonal web rods.

[0014] Preferably, both ends of the transverse rod, the longitudinal rod and the diagonal web rod are provided with round holes corresponding to the round holes on the connecting ribs, and are connected to the round holes on the connecting ribs by connecting bolts.

[0015] Preferably, one end of the transverse rod or the longitudinal rod is connected to one end of the diagonal web rod to form an L-shaped entity; one end of the two transverse rods or the two longitudinal rods are respectively connected to the two ends of the diagonal web rod to form a Z-shaped entity; the two ends of the transverse rod or the longitudinal rod are respectively connected to one end of the two diagonal web rods to form a lightning-shaped entity; the L-shaped, Z-shaped or lightning-shaped entity is connected to the column.

[0016] Preferably, the distribution beams include horizontal distribution beams and longitudinal distribution beams. The length direction of the horizontal distribution beams is perpendicular to the length direction of the prefabricated cap beam installation and multiple distribution beams are arranged above the support frame along the length direction of the prefabricated cap beam installation. The length direction of the longitudinal distribution beams is consistent with the length direction of the prefabricated cap beam installation and are arranged above multiple horizontal distribution beams. Multiple unloading blocks are arranged above the longitudinal distribution beams.

[0017] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages:

[0018] The device of the utility model adopts an assembled connection method as a whole, which has a simple structure, is easy to install and disassemble, and has good integrity after installation. A base is arranged at the bottom to support the device as a whole, thereby preventing overall instability and insufficient supporting force, and improving the stability of the device. The device first connects the horizontal rods and the diagonal braces as a whole into an L-shape, a Z-shape or a lightning shape, and then connects them with the columns as a whole, thereby avoiding the operation of installing the horizontal rods and the diagonal braces one by one, and can directly install multiple horizontal rods or diagonal braces at one time, thereby improving the speed of installation and disassembly of the device, that is, improving the efficiency of construction, and can be repeatedly used, thereby improving the economy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present utility model and form a part of the description. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0020] Figure 1 It is a schematic diagram of the usage state of the device according to the embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the support frame and the distribution beam according to the embodiment of the present utility model;

[0022] Figure 3 It is a front view structural diagram of the support frame and the distribution beam according to the embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the support frame according to the embodiment of the present utility model;

[0024] Figure 5 It is a side view exploded view of the support frame according to the embodiment of the present utility model.

[0025] In the figures, 1, pier column; 2, precast capping beam; 3, cast-in-place section; 4, foundation base; 5, connecting piece; 6, support frame; 7, horizontal distribution beam; 8, longitudinal distribution beam; 9, drop block; 61, column; 62, transverse rod; 63, longitudinal rod; 64, diagonal web member; 65, connecting plate; 66, connecting rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1 - 5 shown, the present utility model provides a technical solution:

[0028] A large cantilever prefabricated assembled cap beam installation device, comprising: a base 4, the length direction of the base 4 is consistent with the length direction of the prefabricated cap beam 2 installation, and the base 4 is arranged on the side of the pier 1, the base 4 can be made of cast-in-place concrete, and is used to provide a support point with sufficient strength for the support of the support frame 6; a support frame 6 is arranged on the base 4, the support frame 6 includes a column 61, a horizontal rod and a diagonal web 64, the column 61, the horizontal rod and the diagonal web 64 can all be made of steel pipes, a plurality of columns 61 are connected vertically up and down to change the overall height of the support frame 6, and two adjacent columns 61 are connected as a whole by the horizontal rod and the diagonal web 64; a distribution beam is arranged above the support frame 6, and is used to adjust the overall height of the device and can evenly distribute the load of the prefabricated cap beam 2 on the support frame 6; a discharge block 9 is arranged above the distribution beam, and the top of the discharge block 9 is used to contact the bottom of the prefabricated cap beam 2.

[0029] In this embodiment, the support frame 6 also includes a connecting plate 65, which is arranged at the upper and lower ends of the column 61, and the plate surface of the connecting plate 65 is perpendicular to the axis of the column 61; a connecting hole is formed through the connecting plate 65, and the connecting holes of the connecting plate 65 that are in contact with the column 61 when the column 61 is installed up and down correspond to each other, and are connected and fixed as a whole by connecting bolts; a reinforcing rib is also provided at the connection between the connecting plate 65 and the column 61 to strengthen the stability of the connection and support of the connecting plate 65, thereby improving the safety of the device.

[0030] In another embodiment, the segment assembly of the support frame 6 can be divided into standard segments and variable segments. The standard segments include multiple segments with consistent specifications and sizes, and the variable segments include multiple segments with inconsistent specifications and sizes. According to the measured beam height of the prefabricated cap beam 2, the standard segments are installed first. When the standard segments cannot be assembled due to the distance to the bottom of the prefabricated cap beam 2, the variable segments of the corresponding height are selected, thereby improving the practicability of the device.

[0031] In this embodiment, a connector 5 is pre-buried above the base 4. The connector 5 can be a ground anchor bolt. The connector 5 is used to connect the connecting plate 65 at the lower end of the bottom column 61 to make the support for the column 61 more stable, thereby improving the stability of the device installation.

[0032] In this embodiment, the horizontal rod includes a transverse rod 62 and a longitudinal rod 63. The longitudinal rod 63 is used to connect the columns 61 arranged along the length direction of the prefabricated cap beam 2. In this embodiment, three columns 61 are included. The transverse rod 62 is used to connect the columns 61 arranged perpendicular to the length direction of the prefabricated cap beam 2. In this embodiment, two columns 61 are included. The horizontal rod is used to connect and fix the relative position and distance between two adjacent columns 61, thereby improving the integrity of the device.

[0033] In this embodiment, a plurality of connecting ribs 66 are provided on the column 61, and round holes are formed in each of the connecting ribs 66. The connecting ribs 66 are used to connect the transverse rod 62, the longitudinal rod 63 and the diagonal web member 64. Preferably, the connecting ribs 66 are provided at the upper, middle and lower ends of the column 61 to make the connection between the columns 61 more stable.

[0034] In this embodiment, the transverse rod 62, the longitudinal rod 63 and the diagonal web member 64 can be made of channel steel structures. Round holes corresponding to the round holes on the connecting ribs 66 are formed at both ends of the transverse rod 62, the longitudinal rod 63 and the diagonal web member 64, and are connected to the round holes on the connecting ribs 66 through connecting bolts. The connection through connecting bolts facilitates installation and disassembly, facilitates the reuse of the device, and improves the economy of the device use.

[0035] In another embodiment, one end of the transverse rod 62 or the longitudinal rod 63 is connected to one end of the diagonal web member 64 to form an L-shaped integral body; or one ends of two transverse rods 62 or two longitudinal rods 63 are respectively connected to both ends of the diagonal web member 64 to form a Z-shaped integral body; or both ends of the transverse rod 62 or the longitudinal rod 63 are respectively connected to one ends of two diagonal web members 64 to form a lightning-shaped integral body. The connection of the transverse rod 62, the longitudinal rod 63 and the diagonal web member 64 can be made by welding or prefabricated by integral forming in the factory. It can be directly used for on-site assembly. Connecting the L-shaped, Z-shaped or lightning-shaped integral body to the column 61 can use only one of the shapes to cooperate with a single horizontal rod or the diagonal web member 64 to connect to the column 61, or two or three of the shapes can be used in combination to connect to the column 61, avoiding the assembly of a single horizontal rod or the diagonal web member 64, improving the installation and disassembly efficiency of the device, and at the same time improving the construction efficiency.

[0036] In this embodiment, the distribution beam includes a horizontal distribution beam 7 and a longitudinal distribution beam 8. The length direction of the horizontal distribution beam 7 is perpendicular to the length direction of the installation of the precast capping beam 2 and a plurality of them are evenly arranged above the support frame 6 along the length direction of the installation of the precast capping beam 2. The length direction of the longitudinal distribution beam 8 is the same as the length direction of the installation of the precast capping beam 2, and is arranged above the plurality of horizontal distribution beams 7. A plurality of drop blocks 9 are evenly arranged above the longitudinal distribution beam 8. The drop blocks 9 can be selected from common drop blocks on the market, improving the economy of the construction.

[0037] Working principle: After the strength of pier column 1 meets the requirements, the splicing of precast capping beam 2 and pier column 1 starts. After the splicing is in place, a device needs to be installed to prevent the overturning of precast capping beam 2. First, bases 4 are set on both sides of pier column 1 along the length direction of precast capping beam 2 to form a good foundation. Connecting members 5 are embedded in bases 4. Support frames 6 are installed in segments according to the beam height of precast capping beam 2. Then, a horizontal distribution beam 7, a longitudinal distribution beam 8 and a drop block 9 are set on support frame 6 to reach the height of precast capping beam 2, and the precast capping beam 2 is supported by contacting the bottom of precast capping beam 2 through drop block 9. After the capping beams on both sides are installed, the construction of cast-in-place section 3 is carried out. Until the prestressed tendon of the capping beam is tensioned, the device is removed. Before removal, the technical personnel shall give a removal briefing to the operators before the removal can be carried out. The drop block is removed by a sand cylinder, and then the drop block is removed. The removal is carried out according to the principle of "removing the supports that are installed later first and the supports that are installed earlier later". Then, the assembly of the next-stage precast capping beam 2 is carried out.

[0038] The details not elaborated in the present utility model are all conventional technical means well known to those skilled in the art.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0041] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A large cantilever prefabricated cap beam installation device, characterized in that: include: A base (4), the length direction of the base (4) being consistent with the length direction of the prefabricated cap beam (2) for installation, and being arranged on the side of the pier column (1); A support frame (6) is arranged on the base (4), the support frame (6) comprising upright posts (61), horizontal rods and diagonal web rods (64), the upright posts (61) are connected vertically up and down to change the height of the support frame (6), and two adjacent upright posts (61) are connected as a whole via the horizontal rods and diagonal web rods (64); A distribution beam, arranged above the support frame (6), used for adjusting the height and evenly distributing the load on the support frame (6); The unloading block (9) is arranged above the distribution beam, and the top end of the unloading block (9) is used to contact the bottom end of the prefabricated cap beam (2).

2. A large cantilever prefabricated cap beam installation device according to claim 1, characterized in that: The support frame (6) further comprises a connecting plate (65), which is arranged at the upper and lower ends of the column (61), and the plane of the connecting plate (65) is perpendicular to the axis of the column (61); the connecting plate (65) is provided with connecting holes, and the connecting holes of the connecting plate (65) that contact the column (61) when it is installed correspond to each other, and are connected by connecting bolts; and a reinforcing rib is provided at the connection between the connecting plate (65) and the column (61).

3. A large cantilever prefabricated cap beam installation device according to claim 2, characterized in that: A connecting piece (5) is pre-buried above the base (4), and the connecting piece (5) is used to connect a connecting plate (65) at the lower end of the bottommost column (61).

4. A large cantilever prefabricated cap beam installation device according to claim 3, characterized in that: The horizontal rods include transverse rods (62) and longitudinal rods (63), the longitudinal rods (63) being used to connect the columns (61) arranged along the length direction of the prefabricated cap beam (2) being installed, and the transverse rods (62) being used to connect the columns (61) arranged perpendicular to the length direction of the prefabricated cap beam (2) being installed.

5. A large cantilever prefabricated cap beam installation device according to claim 4, characterized in that: A plurality of connecting ribs (66) are arranged on the upright column (61), and circular holes are provided on the connecting ribs (66). The connecting ribs (66) are used to connect the transverse rods (62), the longitudinal rods (63) and the diagonal web rods (64).

6. A large cantilever prefabricated cap beam installation device according to claim 5, characterized in that: Both ends of the transverse rod (62), the longitudinal rod (63) and the diagonal web rod (64) are provided with circular holes corresponding to the circular holes on the connecting rib (66), and are connected to the circular holes on the connecting rib (66) by connecting bolts.

7. A large cantilever prefabricated cap beam installation device according to claim 6, characterized in that: One end of the transverse rod (62) or the longitudinal rod (63) is connected to one end of the diagonal web rod (64) to form an L-shaped whole; one end of the two transverse rods (62) or the two longitudinal rods (63) is respectively connected to two ends of the diagonal web rod (64) to form a Z-shaped whole; two ends of the transverse rod (62) or the longitudinal rod (63) are respectively connected to one end of the two diagonal web rods (64) to form a lightning-shaped whole; the L-shaped, Z-shaped or lightning-shaped whole is connected to the column (61).

8. The large cantilever prefabricated cap beam installation device according to claim 6 is characterized in that: The distribution beams include a horizontal distribution beam (7) and a longitudinal distribution beam (8); the length direction of the horizontal distribution beam (7) is perpendicular to the length direction of the prefabricated cap beam (2) and a plurality of horizontal distribution beams (7) are arranged above the support frame (6) along the length direction of the prefabricated cap beam (2); the length direction of the longitudinal distribution beam (8) is consistent with the length direction of the prefabricated cap beam (2) and is arranged above the plurality of horizontal distribution beams (7); and a plurality of unloading blocks (9) are arranged above the longitudinal distribution beam (8).

Images