Upper cross beam support

Abstract

The utility model discloses an upper cross beam support which comprises a main truss and a connecting piece, the main truss is connected with a tower column through the connecting piece, a bearing piece making contact with an upper cross beam is arranged above the main truss, a cross supporting piece is arranged in the middle of the position between the bearing piece and the main truss, and the two sides of the position between the bearing piece and the main truss are each provided with an inclined supporting piece. The connecting piece comprises a bracket connected with the tower column, the top of the bracket is fixedly connected with a cushion block, and the top of the cushion block is fixedly connected with a distribution beam A; the upper cross beam support is of a hanging bracket and corbel bracket type and is mainly composed of the main trusses, the connecting pieces, the bearing pieces, the transverse supporting pieces and the inclined supporting pieces, and the connecting pieces are designed according to the structure of a bridge tower, so that the connecting pieces are more reasonable in structure and position, more stable in stress and convenient to mount and dismount; the overall structural design is reasonable, enough strength and rigidity are achieved, and manufacturing, assembling and disassembling are convenient; the distribution beam A, the distribution beam B, the distribution beam C and the distribution beam D are reasonable in placement position design.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to the upper crossbeam support. Background Technology

[0002] The crossbeams on the pylons of bridges are an important component of the bridge structure, especially for long-span cable-stayed bridges and suspension bridges. As a key connection and force-transmitting structure of the main tower, the crossbeams have complex construction and stress distribution. They not only bear enormous self-weight and live loads, but also transmit various complex forces and deformations, thus making their design and construction quite challenging.

[0003] In bridge construction, the support structure of the crossbeams on the pylons serves as temporary support, ensuring safety and stability during construction. The design of this support structure must not only meet load-bearing and deformation requirements but also consider construction convenience and economy. With the increase in bridge spans and the development of construction technology, the requirements for support structures are becoming increasingly stringent.

[0004] Currently, the main types of crossbeam support structures for cable towers are as follows:

[0005] Type 1, Ground-mounted steel pipe support: This type of support has a simple structure, clear stress distribution, and is easy to construct. However, for ultra-high supports, its stability and safety require special attention.

[0006] Type 2, Hangers and Brackets: Hangers and brackets reduce the pressure on the ground by suspending or supporting the tower columns. However, the installation and dismantling process is relatively complicated and requires a certain load-bearing capacity of the tower columns.

[0007] Type 3: Full-span small steel pipe scaffolding: Full-span scaffolding is composed of a large number of small-diameter steel pipes. It has good overall structural integrity, but it uses a lot of materials, has a large self-weight, and a long construction period.

[0008] Therefore, an upper crossbeam support is proposed. Utility Model Content

[0009] The purpose of this utility model is to provide an upper crossbeam support to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0011] The upper crossbeam support includes:

[0012] The main truss and connecting parts are provided. The main truss is connected to the tower column through the connecting parts. A support member is provided above the main truss that contacts the upper crossbeam. A cross brace is provided in the middle between the support member and the main truss. A diagonal brace is provided on each side between the support member and the main truss.

[0013] The connecting component includes a corbel connected to the tower column, a pad is fixedly connected to the top of the corbel, a distribution beam A is fixedly connected to the top of the pad, and the main truss is erected on top of the distribution beam A.

[0014] As a preferred technical solution, the main trusses are arranged in three groups at equal intervals along the bridge direction and below the supporting members, with two main trusses arranged side by side in each group, and the number of connecting members is the same as that of the main trusses.

[0015] As a preferred technical solution, the main truss includes an upper chord and a lower chord arranged vertically. The upper chord and the lower chord are each spliced ​​together in twos along the length direction by a joint. The upper chord and the lower chord are arranged in a one-to-one correspondence, and a web member is provided between the upper chord and the corresponding lower chord. The upper chord overlaps the top of the distribution beam A.

[0016] As a preferred technical solution, a connecting system A is connected between two adjacent upper chords, and a connecting system B is connected between two adjacent lower chords.

[0017] As a preferred technical solution, the web member includes a support connected to the end of the lower chord away from the joint by a pin, a vertical rod fixedly connected between the support and the middle of the corresponding upper chord, a diagonal rod A connected between the support and the end of the corresponding upper chord near the distribution beam A by a pin, and a diagonal rod B fixedly connected between the support and the end of the corresponding upper chord near the joint.

[0018] As a preferred technical solution, the support component includes two sets of distribution beams B, each set of distribution beams B having three beams arranged in a regular pattern. The tops of the multiple distribution beams B are fixedly connected to several regularly arranged distribution beams C. The tops of the distribution beams C and the diagonal brace are each provided with several regularly arranged small crossbeams. The tops of the distribution beams C are fixedly connected to the bottoms of the corresponding small crossbeams. The tops of the several small crossbeams are fixedly connected to square timbers arranged in a regular pattern. The tops of the several square timbers are fixedly connected to bamboo plywood.

[0019] As a preferred technical solution, each of the cross braces is provided between each distribution beam B and the corresponding upper chord.

[0020] The cross brace includes a pad fixedly connected to the top of the upper chord, a support column fixedly connected to the top of the pad, and the top of the support column fixedly connected to the bottom of the corresponding distribution beam B.

[0021] As a preferred technical solution, the diagonal brace includes a distribution beam D and a frame. Several frames are regularly distributed on the top of the distribution beam D. The top of the frame is connected to the corresponding small crossbeam, and the bottom of the distribution beam D is fixedly connected to the upper chord.

[0022] As a preferred technical solution, the frame includes an upper support and a lower support arranged vertically. One end of the upper support is fixedly connected to the lower support with a side support. The top of the lower support is fixedly connected with support rods A, B, and C at equal intervals. The top of support rod B is fixedly connected to the upper support. The tops of support rods B and C are fixedly connected to the side support. The tops of the upper support and the side support are respectively fixedly connected to corresponding small crossbeams. The bottom of the lower support is fixedly connected to the corresponding upper chord.

[0023] As a preferred technical solution, several of the support rods A and B located on the same side are respectively fixedly connected to a connecting system C.

[0024] This utility model has at least the following beneficial effects:

[0025] This application, by adopting hanger and bracket types, describes an upper crossbeam support system mainly composed of a main truss, connecting parts, supporting parts, horizontal bracing parts, and diagonal bracing parts. The connecting parts are designed according to the structure of a bridge tower, resulting in a more rational structure and position, more stable stress distribution, and easier installation and disassembly. The overall structural design is reasonable, possessing sufficient strength and rigidity, and facilitating manufacturing and disassembly. The placement of distribution beams A, B, C, and D is rationally designed, ensuring relatively even stress distribution on the upper crossbeam support system. The overall stability design of the upper crossbeam support system is strengthened by rationally setting horizontal and diagonal bracing parts to ensure that the upper crossbeam support system does not become unstable during construction. Precise deformation calculations and control are performed on the upper crossbeam support system to ensure that the deformation during construction is within the allowable range. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the upper crossbeam support of this utility model;

[0027] Figure 2 This utility model is a crossbeam support. Figure 1 Schematic diagram of the structure in section 1-1;

[0028] Figure 3 This utility model is a crossbeam support. Figure 1 Schematic diagram of the structure in section 2-2;

[0029] Figure 4 This utility model is a crossbeam support. Figure 1 Structural diagrams of sections 3-3 and 4-4;

[0030] Figure 5 This utility model is a crossbeam support. Figure 1 Schematic diagram of the structure of section 5-5;

[0031] Figure 6 This is a schematic diagram of the main truss of the upper crossbeam support of this utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the upper crossbeam support frame of this utility model.

[0033] In the diagram: 100, Main truss; 110, Top chord; 120, Bottom chord; 130, Web member; 131, Support; 132, Vertical member; 133, Diagonal member A; 134, Diagonal member B; 200, Connecting member; 210, Corbel; 220, Pad; 230, Distribution beam A; 300, Supporting member; 310, Distribution beam B; 320, Distribution beam C; 330, Small crossbeam; 340, Square timber; 350. Bamboo plywood; 400. Horizontal brace; 410. Pad; 420. Support column; 500. Diagonal brace; 510. Distribution beam D; 520. Frame; 521. Upper support; 522. Lower support; 523. Side support; 524. Support rod A; 525. Support rod B; 526. Support rod C; 527. Connecting system C; 600. Connecting system A; 700. Connecting system B; 800. Guardrail. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1-7 The present invention provides an upper crossbeam support, including a main truss 100 and a connector 200. The main truss 100 is connected to the tower column through the connector 200. A support member 300 is provided above the main truss 100 and contacts the upper crossbeam. A cross brace 400 is provided in the middle between the support member 300 and the main truss 100. A diagonal brace 500 is provided on each side between the support member 300 and the main truss 100. The connector 200 includes a corbel 210 connected to the tower column and composed of double-splittered 56a I-beams. A pad 220 is fixedly connected to the top of the corbel 210. A distribution beam A230 is fixedly connected to the top of the pad 220. The distribution beam A230 is composed of three-splittered 56a I-beams. The main truss 100 is erected on the top of the distribution beam A230.

[0036] Among them, there are three groups of main trusses 100 along the bridge direction and below the support member 300, with two main trusses 100 arranged side by side in each group, and the number of connecting members 200 is the same as that of the main trusses 100.

[0037] The main truss 100 includes an upper chord 110 and a lower chord 120 arranged vertically. The upper chord 110 and the lower chord 120 are spliced ​​together along the length direction by a joint. The upper chord 110 and the lower chord 120 are arranged in a one-to-one correspondence. A web member 130 is provided between the upper chord 110 and the corresponding lower chord 120. The upper chord 110 overlaps the top of the distribution beam A230. The upper chord 110 is made of HN700mm×300mm steel, and the lower chord 120 is composed of double-splittered 40a channel steel.

[0038] Among them, a connecting system A600 connects two adjacent upper chord members 110, and a connecting system B700 connects two adjacent lower chord members 120. The connecting system A600 and the connecting system B700 are used together to form all the main trusses 100 into one unit, thereby increasing the overturning resistance of the main trusses 100.

[0039] The web member 130 includes a support 131 connected to the end of the lower chord 120 away from the joint via a pin. A vertically arranged vertical rod 132 is fixedly connected between the support 131 and the middle of the corresponding upper chord 110. A diagonal rod A133 is connected between the support 131 and the end of the corresponding upper chord 110 near the distribution beam A230 via a pin. A diagonal rod B134 is fixedly connected between the support 131 and the end of the corresponding upper chord 110 near the joint. Both the vertical rod 132 and the diagonal rod B134 are made of φ426mm×6mm steel pipes. The diagonal rod A133 is composed of double-jointed 40a channel steel. By utilizing the tension of the diagonal rods A133 and B134 and the compression of the vertical rod 132, the force is symmetrically transmitted to both sides, which can reduce the internal force of the lower chord 120 to a certain extent, especially the internal force of the end lower chord 120.

[0040] The support component 300 includes two sets of distribution beams B310, with three distribution beams in each set regularly distributed. The tops of the multiple distribution beams B310 are fixedly connected to several regularly distributed distribution beams C320. The tops of both the distribution beams C320 and the diagonal brace 500 are provided with several regularly distributed small crossbeams 330. The tops of the distribution beams C320 are fixedly connected to the bottoms of the corresponding small crossbeams 330. The tops of the several small crossbeams 330 are fixedly connected to square timber 340. There are several square timbers 340 arranged in a regular pattern. The tops of several square timbers 340 are fixedly connected to bamboo plywood 350. The distribution beam B310 is composed of double-jointed 45a I-beams. The distribution beam C320 uses 40a I-beams. The small crossbeams 330 are 20a I-beams. The transverse spacing of the small crossbeams 330 is 75mm. The size of the square timbers 340 is 10cm×10cm. The spacing at the web of the square timbers 340 is 15cm and the spacing at the bottom plate is 30cm. The thickness of the bamboo plywood 350 is 15mm.

[0041] Among them, a cross brace 400 is provided between each distribution beam B310 and the corresponding upper chord 110;

[0042] The cross brace 400 includes a pad 410 fixedly connected to the top of the upper chord 110. A support column 420 is fixedly connected to the top of the pad 410. The top of the support column 420 is fixedly connected to the bottom of the corresponding distribution beam B310. The pad 410 is composed of three 25a I-beams. The cross brace 400 can connect the main truss 100 and the support member 300 and provide vertical support.

[0043] Among them, the diagonal bracing member 500 includes the distribution beam D510 and the frame 520. Several frames 520 are regularly distributed on the top of the distribution beam D510. The top of the frame 520 is connected to the corresponding small crossbeam 330. The bottom of the distribution beam D510 is fixedly connected to the upper chord 110. The distribution beam D510 is composed of double splices 25a. The diagonal bracing member 500 can connect the main truss 100 and the supporting member 300 and provide diagonal support.

[0044] The frame 520 includes an upper support 521 and a lower support 522 arranged vertically. One end of the upper support 521 is fixedly connected to the lower support 522 with a side support 523. The top of the lower support 522 is fixedly connected with support rods A524, B525 and C526 at equal intervals. The top of support rod B525 is fixedly connected to the upper support 521. The tops of support rods B525 and C526 are fixedly connected to the side support 523. The tops of the upper support 521 and the side support 523 are fixedly connected to the corresponding small crossbeams 330 respectively. The bottom of the lower support 522 is fixedly connected to the corresponding upper chord 110.

[0045] Among them, several support rods A524 and B525 located on the same side are fixedly connected to a connecting system C527. The connecting system C527 can connect several frames 520 on the same side, forming all frames 520 on the same side into one unit, increasing the overturning resistance of the frames 520.

[0046] To ensure the safety and convenience of workers at height, several small crossbeams 330 are each fixedly connected to two sides of their tops with guardrails 800. The guardrails 800 are constructed of steel pipes, with a minimum height of 1.2 meters. The upper crossbar is 1.2 meters above the working surface, and the distance between the upper and lower crossbars is 60 cm. A toe board is installed 20 cm above the working surface. The guardrail 800 has vertical posts welded securely to the small crossbeams 330 every 2 meters, and green steel mesh is suspended from the guardrails for protection.

[0047] The working principle of this utility model is as follows: During the construction of section 29 of tower #5 and section 31 of tower #4, corbels 210 are pre-embedded. Six corbels 210 are set at corresponding positions on each side of the tower column. During the construction of the tower column, the position of the pre-embedded parts is adjusted appropriately to the position of the main reinforcement, and the main reinforcement must not be cut. The main truss 100 is processed and assembled on the ground. Each truss is hoisted as a whole by a tower crane. After the six main trusses 100 are installed in place, the connecting system A600 and the connecting system B700 are used to form all the main trusses 100 into one unit, which increases the overturning resistance of the main truss 100. The lower chord 120 is erected on the distribution beam A230 and connected to the corbel 210 through the pad 220. The upper chord 110 of the outermost section is connected to the distribution beam D510 placed on it by electric welding. The distribution beam A is spot welded to the two small crossbeams 330 in the upper middle part, and no less than two spot welds are made on each cross section.

[0048] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An upper crossbeam support, characterized in that, include: The main truss (100) and the connecting member (200) are connected to the tower column through the connecting member (200). The main truss (100) is provided with a support member (300) above it that contacts the upper crossbeam. A cross brace (400) is provided in the middle between the support member (300) and the main truss (100). A diagonal brace (500) is provided on each side between the support member (300) and the main truss (100). The connecting member (200) includes a corbel (210) connected to the tower column, a pad (220) is fixedly connected to the top of the corbel (210), a distribution beam A (230) is fixedly connected to the top of the pad (220), and the main truss (100) is erected on the top of the distribution beam A (230). The main truss (100) includes an upper chord (110) and a lower chord (120) arranged vertically. The upper chord (110) and the lower chord (120) are each spliced ​​together along the length direction by a joint. The upper chord (110) and the lower chord (120) are arranged in a one-to-one correspondence. A web member (130) is provided between the upper chord (110) and the corresponding lower chord (120). The upper chord (110) overlaps the top of the distribution beam A (230). The web member (130) includes a support (131) connected to the end of the lower chord (120) away from the joint by a pin. A vertical rod (132) is fixedly connected between the support (131) and the middle of the corresponding upper chord (110). A diagonal rod A (133) is connected between the support (131) and the end of the corresponding upper chord (110) near the distribution beam A (230) by a pin. A diagonal rod B (134) is fixedly connected between the support (131) and the end of the corresponding upper chord (110) near the joint. The support member (300) includes two sets of distribution beams B (310), each set of distribution beams B (310) has three regularly distributed beams, and the tops of the multiple distribution beams B (310) are fixedly connected to several regularly distributed distribution beams C (320). The tops of the distribution beams C (320) and the diagonal brace (500) are provided with several regularly distributed small crossbeams (330). The tops of the distribution beams C (320) are fixedly connected to the bottoms of the corresponding small crossbeams (330). The tops of the multiple small crossbeams (330) are fixedly connected to square timber (340), and the square timber (340) is regularly distributed. The tops of the multiple square timbers (340) are fixedly connected to bamboo plywood (350).

2. The upper crossbeam support according to claim 1, characterized in that: The main truss (100) is arranged in three groups along the bridge direction and below the support member (300) at equal intervals. Each group of main trusses (100) has two main trusses (100) arranged side by side. The number of connecting members (200) is the same as that of the main trusses (100).

3. The upper crossbeam support according to claim 1, characterized in that: A connecting system A (600) connects two adjacent upper chords (110), and a connecting system B (700) connects two adjacent lower chords (120).

4. The upper crossbeam support according to claim 1, characterized in that: The cross brace (400) is provided between each distribution beam B (310) and the corresponding upper chord (110); The cross brace (400) includes a pad (410) fixedly connected to the top of the upper chord (110), and a support column (420) fixedly connected to the top of the pad (410). The top of the support column (420) is fixedly connected to the bottom of the corresponding distribution beam B (310).

5. The upper crossbeam support according to claim 4, characterized in that: The diagonal brace (500) includes a distribution beam D (510) and a frame (520). Several frames (520) are regularly distributed on the top of the distribution beam D (510). The top of the frame (520) is connected to the corresponding small crossbeam (330). The bottom of the distribution beam D (510) is fixedly connected to the upper chord (110).

6. The upper crossbeam support according to claim 5, characterized in that: The frame (520) includes an upper support (521) and a lower support (522) arranged vertically. One end of the upper support (521) is fixedly connected to the lower support (522) with a side support (523). The top of the lower support (522) is fixedly connected with support rods A (524), B (525) and C (526) at equal intervals. The top of support rod B (525) is fixedly connected to the upper support (521). The tops of support rods B (525) and C (526) are fixedly connected to the side support (523). The tops of the upper support (521) and the side support (523) are fixedly connected to the corresponding small crossbeams (330) respectively. The bottom of the lower support (522) is fixedly connected to the corresponding upper chord (110).

7. The upper crossbeam support according to claim 6, characterized in that: Several of the aforementioned struts A (524) and struts B (525) located on the same side are respectively fixedly connected to a connecting system C (527).

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