A support device and construction method for steel box beam

Abstract

The present invention relates to the field of construction technology, and in particular to a support device and construction method for a steel box girder. The support device for a steel box girder comprises a support pier, a steel column and a support tube, wherein the steel column and the support tube are respectively arranged in multiple rows; multiple rows of positioning grooves are arranged at intervals along the first direction on the support pier, and each row of positioning grooves is arranged at intervals along the second direction; multiple rows of steel columns are arranged one-to-one with multiple rows of positioning grooves, one end of the steel column is arranged at the bottom of the positioning groove, and the other end extends out of the positioning groove, and a gap for insertion is formed between the outer peripheral surface of the steel column and the groove wall of the positioning groove; multiple rows of support tubes are respectively sleeved on multiple rows of steel columns in a one-to-one correspondence, one end of the support tube is inserted into the positioning groove, and the other end is used to support the steel box girder. The support device for a steel box girder of the present invention eliminates part of the welding and cutting operations in the construction operation, speeds up the construction progress, and can also reuse or replace the support tube, reducing the construction cost.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a supporting device for a steel box girder and a construction method. Background Art

[0002] At present, a large number of temporary supports need to be set up during the installation of steel box girders. However, if the temporary supports used in the prior art to support the steel box girders are not firmly connected, it will affect the construction safety. After the steel box girder is installed on the main body of the bridge pier, the steel pipe supports of the temporary supports need to be damaged before the steel pipe supports and the temporary piers can be removed. Due to multiple material losses, a large number of steel pipe supports cannot be reused. Not only is the operation process laborious and time-consuming, it also affects the construction progress and cannot meet the requirements for the rapid removal of temporary supports, thus affecting traffic restoration and greatly increasing construction costs. Therefore, it is necessary to provide a support device that can not only ensure safety, but also minimize damage to the supporting structure during use and removal, achieve rapid disassembly and assembly, and reuse or replace the supporting structure, reduce costs, and improve construction efficiency. Summary of the invention

[0003] The object of the present invention is to provide a supporting device for a steel box girder, which reduces damage to supporting structural members, realizes rapid disassembly and assembly and reuses structural members, reduces costs, and improves construction efficiency.

[0004] In order to achieve the above objectives, the following technical solutions are provided:

[0005] A supporting device for a steel box girder, used for temporarily supporting the steel box girder, comprising:

[0006] A support pier, wherein a plurality of rows of positioning grooves are arranged at intervals along a first direction on the support pier, and each row of the positioning grooves is arranged at intervals along a second direction, and the first direction and the second direction are arranged at an angle and are respectively perpendicular to the height direction of the support pier;

[0007] Multiple rows of steel columns, the multiple rows of steel columns are arranged one-to-one with the multiple rows of positioning grooves, one end of the steel column is arranged at the bottom of the positioning groove, and the other end extends out of the positioning groove, and a gap for insertion is formed between the outer peripheral surface of the steel column and the groove wall of the positioning groove;

[0008] Multiple rows of support pipes are respectively and one by one sleeved on the multiple rows of steel columns, one end of the support pipe is inserted into the positioning groove, and the other end is used to support the steel box beam.

[0009] Furthermore, it also includes a plurality of connecting channel steels arranged at intervals along the first direction, each of the connecting channel steels extends along the second direction and is arranged at one end of the support tube away from the support pier, and the plurality of connecting channel steels are arranged corresponding to the plurality of rows of support tubes for supporting the steel box girder.

[0010] Furthermore, a plurality of connection support columns are arranged on the connection channel steel, and the plurality of connection support columns are arranged at intervals along the second direction.

[0011] Furthermore, the supporting pier is provided with a lifting lug.

[0012] Furthermore, a connecting steel bar is arranged in the supporting pier, and one end of the steel column extends into the supporting pier and is connected to the connecting steel bar.

[0013] Furthermore, it also includes a plurality of reinforcement components, and along the first direction, one reinforcement component is connected between two adjacent support tubes.

[0014] Furthermore, the reinforcement assembly includes a first reinforcement rod arranged perpendicular to the support tube, and two ends of the first reinforcement rod are respectively connected to two adjacent support tubes along the first direction.

[0015] Furthermore, the reinforcement assembly also includes a second reinforcement rod disposed at an angle to the first reinforcement rod, and two ends of the second reinforcement rod are respectively connected to two adjacent support tubes along the first direction.

[0016] Furthermore, it also includes a reinforcement support, which extends along the first direction and is connected to the plurality of connecting channel steels.

[0017] Furthermore, a construction method for a support device for a steel box girder is also provided, using the support device for a steel box girder as described above, comprising the following steps:

[0018] Step 1: hoist the supporting pier to the working position below the steel box girder;

[0019] Step 2: sleeve multiple rows of support tubes on multiple rows of steel columns one by one, and insert the bottom end of each support tube into the bottom of a corresponding positioning groove;

[0020] Step 3, sequentially installing a plurality of connecting channel steels on the top of the plurality of rows of support pipes;

[0021] Step 4, hoisting the steel box girder into place and fixing it on the plurality of connecting channel steels;

[0022] Step 5: After the steel box girder is stably built on the pier body, the plurality of connecting channel steels are removed;

[0023] Step 6, pulling out the multiple rows of support pipes from the multiple positioning grooves in sequence, and disassembling and separating them from the steel columns;

[0024] Step 7: Remove the support pier.

[0025] The beneficial effects of the present invention are:

[0026] The support device for steel box girders in the present invention provides multiple rows of positioning grooves on the support piers so that multiple rows of support tubes can be accurately and securely inserted into the steel columns on the support piers, that is, one end of the support tube is accommodated in the gap between the outer peripheral surface of the steel column and the groove wall of the positioning groove, and the other end is used to support the steel box girder, which not only increases the stability of the support device, but also facilitates the replacement of support tubes of different lengths according to different construction working heights, thereby increasing the scope of application; at the same time, through the coordination of the positioning grooves, the steel columns and the support tubes, it is convenient to quickly remove the multiple rows of support tubes from the support piers after the steel box girder is installed on the pier body, thereby eliminating part of the welding and cutting operations in the construction work, speeding up the construction progress, and also allowing the support tubes to be reused to reduce the construction cost.

[0027] The construction method of the support device for the steel box girder in the present invention can speed up the construction progress. After the steel box girder is stably built on the bridge pier body, the site occupied by the construction work is quickly cleared and traffic is restored. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the exploded structure of a support device for a steel box girder provided in Embodiment 1 of the present invention;

[0030] Figure 2 A schematic structural diagram of a support pier and a steel column of a support device for a steel box girder provided in Embodiment 1 of the present invention;

[0031] Figure 3 for Figure 2 Sectional view along the AA direction;

[0032] Figure 4 A schematic structural diagram of a support pipe and a connecting channel steel of a support device for a steel box girder provided in Embodiment 1 of the present invention;

[0033] Figure 5 A schematic structural diagram of a support device for a steel box girder provided in Embodiment 1 of the present invention;

[0034] Figure 6 A schematic structural diagram of a support pipe and a connecting channel steel of a support device for a steel box girder provided in a second embodiment of the present invention;

[0035] Figure 7This is a schematic structural diagram of the support pipe and connecting channel steel of the support device for the steel box girder provided in the third embodiment of the present invention.

[0036] In the figure:

[0037] 1-support pier; 11-positioning groove; 111-gap; 12-lifting ear;

[0038] 2-Steel columns;

[0039] 3- Support tube;

[0040] 4-connecting channel steel; 41-connecting support column; 42-reinforcement support;

[0041] 5-reinforcement assembly; 51-first reinforcement rod; 52-second reinforcement rod;

[0042] 61- first diagonal brace; 62- second diagonal brace. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is usually placed when in use, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, or to distinguish different structures or components, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0047] Embodiment 1

[0048] like Figures 1 to 4As shown, an embodiment of the present invention provides a support device for a steel box girder, which is used for temporarily supporting a steel box girder, and includes a support pier 1, a steel column 2 and a support tube 3, wherein the steel column 2 and the support tube 3 are respectively arranged in two rows. Two rows of positioning grooves 11 are arranged at intervals along a first direction on the support pier 1, and each row of positioning grooves 11 is arranged at intervals along a second direction. Optionally, each row includes two positioning grooves 11 arranged at intervals along the second direction, and the first direction and the second direction are arranged at an angle of 90 degrees and are respectively perpendicular to the height direction of the support pier 1, wherein the first direction refers to Figure 2 The direction indicated by the arrows ab is shown in the figure, and the second direction is shown in Figure 2 The two rows of steel columns 2 are arranged in a one-to-one correspondence with the two rows of positioning grooves 11, one end of the steel column 2 is arranged at the bottom of the positioning groove 11, and the other end extends out of the positioning groove 11, and a gap 111 for insertion is formed between the outer peripheral surface of the steel column 2 and the groove wall of the positioning groove 11; the two rows of support tubes 3 are respectively sleeved on the two rows of steel columns 2 in a one-to-one correspondence, one end of the support tube 3 is inserted into the positioning groove 11, and the other end is used to support the steel box beam.

[0049] The support device for the steel box girder in this embodiment has two rows of positioning grooves 11 on the support pier 1 so that the two rows of support tubes 3 can be accurately and securely inserted into the steel column 2 on the support pier 1, that is, one end of the support tube 3 is accommodated in the gap 111 between the outer peripheral surface of the steel column 2 and the groove wall of the positioning groove 11, and the other end is used to support the steel box girder, which not only increases the stability of the support device, but also facilitates the replacement of support tubes 3 of different lengths according to different construction working heights, thereby increasing the scope of application; at the same time, through the cooperation of the positioning grooves 11, the steel column 2 and the support tube 3, the two rows of support tubes 3 can be quickly removed from the support pier 1 after the steel box girder is installed on the pier body, thereby eliminating part of the welding and cutting operations in the construction work, speeding up the construction progress, and also allowing the support tube 3 to be reused to reduce the construction cost.

[0050] Alternatively, see Figure 2 The supporting pier 1 is provided with four lifting ears 12, which are arranged at the four corners of the supporting pier 1. The supporting pier 1 can be hoisted and moved to the working position by hooking the lifting ears 12 with hoisting equipment.

[0051] Alternatively, see Figure 4 The support device for the steel box girder in this embodiment further includes two connecting channel steels 4 arranged at intervals along the first direction, each connecting channel steel 4 extends along the second direction and is arranged at one end of the support tube 3 away from the support pier 1, and the two connecting channel steels 4 are arranged corresponding to the two rows of support tubes 3 for supporting the steel box girder. By arranging a connecting channel steel 4 on each row of support tubes 3, each connecting channel steel 4 extending along the second direction can be supported by multiple support tubes 3, and the entire support structure has high strength and is not easy to overturn, thereby ensuring construction safety.

[0052] Optionally, the connecting channel steel 4 is an I-beam, the lower flange of the connecting channel steel 4 is arranged on the supporting pipe 3, and the upper flange of the connecting channel steel 4 is used to connect and support the steel box girder, which is convenient for material collection and hoisting and has high strength.

[0053] Alternatively, see Figure 4 and Figure 5 A plurality of connection support columns 41 are arranged on the connection channel steel 4, and the plurality of connection support columns 41 are arranged at intervals along the second direction. The connection support 41 is arranged at the top of the connection channel steel 4 and can be supported on the bottom of the steel box girder. By setting the connection support 41, it is convenient to disassemble the connection channel steel 4 in the later stage. The connection support 41 can be cut to separate the connection channel steel 4 from the steel box girder, thereby reducing the structural damage to the connection channel steel 4 and making the construction more convenient.

[0054] Optionally, along the second direction, a plurality of connecting support columns 41 are located between two support tubes 3 to support the bottom of the steel box girder. After the steel box girder is installed on the pier body, the support tube 3 can be hoisted and pulled out from the steel column 2 using the space on both sides of the steel box girder.

[0055] Optionally, a connecting steel bar is provided in the supporting pier 1, and one end of the steel column 2 extends into the supporting pier 1 and is connected to the connecting steel bar. The supporting pier 1 in this embodiment is a prefabricated cement pier, and the connecting steel bar is pre-embedded in the casting template and connected to the steel column 2 before the supporting pier 1 is cast, and then the supporting pier 1 is cast to firmly connect the supporting pier 1 and the steel column 2.

[0056] Optionally, the depth of the positioning groove 11 is 200 mm, and the distance between the bottom of the positioning groove 11 and the end of the steel column 2 extending into the support pier 1 is 100 mm, that is, the depth of the positioning groove 11 is greater than the distance between the bottom of the positioning groove 11 and the end of the steel column 2 extending into the support pier 1. The above arrangement allows the insertion depth of the support pier 1 to ensure that the support pier 1 is stably inserted into the gap 111 of the positioning groove 11 without shaking or offsetting, while effectively controlling material consumption.

[0057] Optionally, the supporting pier 1 in this embodiment is a rectangular parallelepiped, wherein the supporting pier 1 is 3.5 meters long, 2.5 meters wide, and 0.5 meters high, and is prefabricated with C40 concrete; the connecting steel bars are 16 mm in diameter, the height of the steel column 2 is 1.1 meters, and the diameter is 0.6 meters, wherein the length of the steel column 2 protruding from the supporting pier 1 is 0.8 meters.

[0058] Optionally, the gap 111 in this embodiment is an annular gap, and the width of the gap 111 along the radial direction of the steel column 2 is 10 mm, that is, the support tube 3 with an inner diameter of not less than 0.6 meters and an outer diameter greater than 0.6 meters and less than 0.62 meters can be inserted into the positioning groove 11.

[0059] This embodiment also provides a construction method for a support device for a steel box beam, using the above-mentioned support device for a steel box beam, comprising the following steps:

[0060] Step 1: hoist the support pier 1 to the working position below the steel box girder, that is, use the hoisting equipment to hook the lifting lug 12 to hoist and move the support pier 1 to the working position.

[0061] Step 2, hoist two rows of support tubes 3, and sleeve the two rows of support tubes 3 on the two rows of steel columns 2 one by one, ensuring that the bottom end of each support tube 3 is accurately inserted into the bottom of a corresponding positioning groove 11.

[0062] Step 3: Install two connecting channel steels 4 on the top of the two rows of supporting tubes 3 in sequence, and fix the connecting channel steels 4 to the top of the supporting tubes 3 by welding.

[0063] Step 4: hoist the steel box girder into place and fix the steel box girder on the connecting support columns 41 on the two connecting channel steels 4.

[0064] Step 5: After the steel box girder is stably built on the pier body, the two connecting channel steels 4 are removed. In this process, the connecting channel steel 4 and the steel box girder can be separated by cutting the connecting support column 41. Then, the connecting channel steel 4 and the supporting tube 3 can be separated by cutting the connecting part of the connecting channel steel 4 and the supporting tube 3.

[0065] Step 6: Pull out the two rows of support pipes 3 from the plurality of positioning grooves 11 in sequence, and disassemble and separate them from the steel columns 2. The operation is fast and the construction is safe.

[0066] Step 7: Remove the support pier 1, that is, use the lifting equipment to hook the lifting lug 12 to lift the support pier 1 away from the working position. The construction method of the support device for the steel box girder in this embodiment can speed up the construction progress. After the steel box girder is stably built on the pier body, the site occupied by the construction work can be quickly cleared and traffic can be restored.

[0067] Embodiment 2

[0068] The supporting device for the steel box beam of this embodiment includes a supporting pier 1, a steel column 2, a supporting pipe 3 and a connecting channel steel 4, and the remaining components are the same as those of the first embodiment. Figure 6 The difference between this embodiment and the first embodiment is that the support device for the steel box beam further includes a plurality of reinforcement components 5, along the first direction, the first direction see Figure 6 In the directions indicated by arrows ab, a reinforcement component 5 is connected between two adjacent support tubes 3 , and the reinforcement component 5 is used to enhance the overall strength of the two rows of support tubes 3 .

[0069] Alternatively, see Figure 6Each reinforcement assembly 5 includes two first reinforcement rods 51 arranged perpendicular to the support tube 3. The two first reinforcement rods 51 are arranged at intervals along the axial direction of the support tube 3, and the two ends of each first reinforcement rod 51 are respectively connected to two adjacent support tubes 3 along the first direction. The overall strength of the two rows of support tubes 3 is enhanced by the first reinforcement rods 51.

[0070] Alternatively, see Figure 6 Each reinforcement assembly 5 also includes a second reinforcement rod 52, which is arranged at an angle with the first reinforcement rod 51 and is located between the two first reinforcement rods 51. The two ends of the second reinforcement rod 52 are respectively connected to two adjacent support tubes 3 along the first direction. The overall strength of the two rows of support tubes 3 is further enhanced through the cooperation of the first reinforcement rod 51 and the second reinforcement rod 52.

[0071] Alternatively, see Figure 6 , along the second direction, the second direction see Figure 6 In the direction indicated by arrows cd, a first diagonal brace 61 and a second diagonal brace 62 are provided between two adjacent support tubes 3, the first diagonal brace 61 and the second diagonal brace 62 are connected to each other and are provided at an angle, the two ends of the first diagonal brace 61 are respectively connected to two adjacent support tubes 3 along the second direction, and the two ends of the second diagonal brace 62 are respectively connected to two adjacent support tubes 3 along the second direction. The overall strength of the two rows of support tubes 3 is further enhanced by the first diagonal brace 61 and the second diagonal brace 62.

[0072] In this embodiment, the first reinforcement rod 51 and the second reinforcement rod 52 and the first diagonal brace 61 and the second diagonal brace 62 can be removed together with the support tube 3 after the connecting channel steel 4 is removed, or the first reinforcement rod 51 and the second reinforcement rod 52 and the first diagonal brace 61 and the second diagonal brace 62 can be removed from the support tube 3 first, and then the support tube 3 can be removed in sequence.

[0073] Embodiment 3

[0074] The supporting device for steel box beam of this embodiment includes supporting pier 1, steel column 2, supporting pipe 3 and connecting channel steel 4, and the remaining components are the same as those of the first embodiment. The difference between this embodiment and the first embodiment is: Figure 7 , further comprising a reinforcing support 42, a reinforcing support 42 is provided on the top of the connecting channel steel 4, and the reinforcing support 42 extends along a first direction, and the first direction refers to Figure 7 The directions are shown by arrows ab, and the reinforcing brace 42 is connected to the two connecting channel steels 4, and the overall strength between the two connecting channel steels 4 is enhanced by the reinforcing brace 42.

[0075] The removal of the reinforcing support 42 in this embodiment can be arranged according to the on-site construction conditions. For example, the reinforcing support 42 and the connecting channel steel 4 can be removed together, or the reinforcing support 42 can be removed from the connecting channel steel 4 first, and then the connecting channel steel 4 can be removed.

[0076] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A support device for a steel box girder, used for temporarily supporting a steel box girder, characterized in that: include: A support pier (1), wherein a plurality of rows of positioning grooves (11) are arranged at intervals along a first direction, each row of the positioning grooves (11) is arranged at intervals along a second direction, the first direction and the second direction are arranged at an angle and are respectively perpendicular to the height direction of the support pier (1); A plurality of rows of steel columns (2), wherein the plurality of rows of steel columns (2) are arranged in one-to-one correspondence with the plurality of rows of positioning grooves (11), one end of the steel column (2) is arranged at the bottom of the positioning groove (11), and the other end extends out of the positioning groove (11), and a gap (111) for insertion is formed between the outer peripheral surface of the steel column (2) and the groove wall of the positioning groove (11); A plurality of rows of support tubes (3) are respectively sleeved on the plurality of rows of steel columns (2) in a one-to-one correspondence, one end of the support tube (3) is inserted into the positioning groove (11), and the other end is used to support the steel box beam; A connecting steel bar is arranged in the supporting pier (1), and one end of the steel column (2) extends into the supporting pier (1) and is connected to the connecting steel bar; The supporting pier (1) is a prefabricated cement pier. The connecting steel bars are pre-buried in the casting template and connected to the steel columns (2) before the supporting pier (1) is cast. Then, the supporting pier (1) is cast to firmly connect the supporting pier (1) to the steel columns (2).

2. The support device for a steel box girder according to claim 1, characterized in that: It also includes a plurality of connecting channel steels (4) arranged at intervals along the first direction, each of the connecting channel steels (4) extending along the second direction and arranged at one end of the support tube (3) away from the support pier (1), and the plurality of connecting channel steels (4) are arranged corresponding to the plurality of rows of support tubes (3) for supporting the steel box girder.

3. The support device for a steel box girder according to claim 2, characterized in that: A plurality of connection support columns (41) are arranged on the connection channel steel (4), and the plurality of connection support columns (41) are arranged at intervals along the second direction.

4. The support device for a steel box girder according to claim 2, characterized in that: It also includes a reinforcing support (42), wherein the reinforcing support (42) extends along the first direction and is connected to a plurality of the connecting channel steels (4).

5. The supporting device for a steel box girder according to claim 1, characterized in that: The supporting pier (1) is provided with a lifting lug (12).

6. The support device for a steel box girder according to claim 1, characterized in that: It also comprises a plurality of reinforcement components (5), wherein along the first direction, one reinforcement component (5) is connected between two adjacent support tubes (3).

7. The support device for a steel box girder according to claim 6, characterized in that: The reinforcement assembly (5) comprises a first reinforcement rod (51) arranged perpendicular to the support tube (3), and two ends of the first reinforcement rod (51) are respectively connected to two adjacent support tubes (3) along the first direction.

8. The supporting device for a steel box girder according to claim 7, characterized in that: The reinforcement assembly (5) further comprises a second reinforcement rod (52) arranged at an angle with the first reinforcement rod (51), and two ends of the second reinforcement rod (52) are respectively connected to two adjacent support tubes (3) along the first direction.

9. A construction method for a support device for a steel box girder, characterized in that: Using the support device for a steel box girder according to any one of claims 2 to 8 comprises the following steps: Step 1: hoist the support pier (1) to the working position below the steel box girder; Step 2: sleeve multiple rows of support tubes (3) on multiple rows of steel columns (2) in a one-to-one correspondence, and insert the bottom end of each support tube (3) into the bottom of a corresponding positioning groove (11); Step 3, sequentially installing a plurality of connecting channel steels (4) on the top ends of the plurality of rows of support pipes (3); Step 4, hoisting the steel box girder into place and fixing it on the plurality of connecting channel steels (4); Step 5: After the steel box girder is stably built on the pier body, the plurality of connecting channel steels (4) are removed; Step 6, pulling out the multiple rows of support tubes (3) from the multiple positioning grooves (11) in sequence, and disassembling and separating them from the steel columns (2); Step 7: remove the supporting pier (1).

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