A transverse wind-resistant support for a kilometer-level suspension bridge in a narrow space

Abstract

The utility model discloses a kind of narrow space transverse wind-resistant support of kilometer-level suspension bridge, it is related to building engineering construction technical field;It is to ensure the overall stability of transverse support from hoisting to installation process, and the following technical scheme is proposed: including support base plate, support base plate top is equipped with ingot, ingot top is equipped with first steel sheet by elastic rubber, first steel sheet is installed on support upper steel sheet bottom, support upper steel sheet is installed on the bottom of supporting cushion stone by embedded steel sheet, ingot, elastic rubber and the outer sleeve of first steel sheet are equipped with steel cylinder, temporary anchor rod is symmetrically arranged between support base plate and support upper steel sheet, temporary inclined rod is obliquely arranged between two temporary anchor rods, temporary lifting lug is welded on the top of embedded steel sheet.The utility model is obliquely arranged between two temporary anchor rods Temporary inclined rod is formed into stable triangle structure, the rigidity and reliability of support in hoisting and installation process are enhanced, prevent support from being damaged in hoisting and installation process.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a transverse wind-resistant support for a narrow space in a kilometer-level suspension bridge. Background Technology

[0002] Long-span suspension bridges are frequently designed and constructed in highway, municipal, and railway engineering projects. The wind resistance performance of long-span steel box girder suspension bridges, in particular, directly impacts their normal use. Wind resistance design reduces bulging damage caused by wind forces. Flutter, resulting from the combined effects of bulging and bridge natural vibration, can directly exceed the ultimate bearing capacity of a suspension bridge. The support system at the lateral contact point between the girder and the tower, adapting to displacement under lateral wind forces, is especially crucial. The support system directly affects the bridge's service life, and ensuring correct bearing installation during construction is key to meeting the bearing's design functions.

[0003] Because the transverse wind-resistant bearings of a kilometer-level suspension bridge are long and heavy, their installation and dismantling process differs from that of the longitudinal bearings. During the hoisting of longitudinal bearings, it is sufficient to ensure that they are lifted vertically and then placed stably. However, the transverse bearings are 90° apart from the longitudinal bearings in the horizontal direction, making them extremely prone to deformation and damage during hoisting. Therefore, it is necessary to ensure that the initial longitudinal and transverse displacements and angles of the bearings do not change during transportation and installation. Utility Model Content

[0004] This utility model provides a transverse wind-resistant support for narrow spaces in a kilometer-level suspension bridge, with the aim of ensuring the overall stability of the transverse support from hoisting to installation.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A transverse wind-resistant support for a narrow space of a kilometer-class suspension bridge includes a support base plate, a steel ingot on the top of the support base plate, a first steel plate installed on the top of the steel ingot via elastic rubber, the first steel plate installed on the bottom of an upper steel plate on the support, the upper steel plate on the support being installed on the bottom of a support pad stone via a pre-embedded steel plate, a steel cylinder being sleeved over the steel ingot, elastic rubber, and the first steel plate, temporary anchors being symmetrically arranged between the support base plate and the upper steel plate on the support, a temporary diagonal brace being inclined between the two temporary anchors, and a temporary lifting lug welded to the top of the pre-embedded steel plate.

[0007] Furthermore, a sealing ring is provided on the top of the elastic rubber.

[0008] Furthermore, a waterproof and dustproof cover is installed on the outside of the steel plate on the support.

[0009] Furthermore, a pre-embedded steel plate is welded to the top of the steel plate on the support, and multiple anchor bars are spaced apart on the top of the pre-embedded steel plate, which are then fixed to the support pad stone.

[0010] Furthermore, the bottom of the support base plate is connected to the support pad plate, and the bottom of the support pad plate is connected to the stiffening beam.

[0011] This utility model has the following beneficial effects:

[0012] This utility model fixes the position of the support by symmetrically setting temporary anchor rods between the support base plate and the support upper steel plate, preventing movement during concrete pouring or other construction activities; and sets temporary diagonal rods between two temporary anchor rods to form a stable triangular structure, which enhances the rigidity and reliability of the support during hoisting and installation, and prevents damage to the support during hoisting and installation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 A schematic diagram showing the connection between temporary anchor bolts and temporary diagonal braces and the support base plate and the upper steel plate of the support;

[0015] Figure 3 This is a top view of the present invention.

[0016] Figures 1 to 3 The reference numerals in the attached drawings are respectively: steel ingot 1, elastic rubber 2, support base plate 3, first steel cylinder 4, first steel plate 5, second cylinder 6, upper steel plate of support 8, sealing ring 9, temporary anchor rod 10, temporary diagonal rod 11, waterproof and dustproof cover 12, temporary lifting lug 13, support pad 14, stiffening beam 15, embedded steel plate 16, anchor bar 17, support pad stone 18. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Please refer to Figure 1-3 A transverse wind-resistant support for a kilometer-class suspension bridge in a confined space is described below. This support is primarily used to effectively resist transverse wind loads in long-span suspension bridges within a limited space, ensuring the stability and safety of the bridge structure under strong winds. The embodiment will be described in detail below with reference to the accompanying drawings, but this embodiment is not limited to the content shown in the drawings.

[0019] The support includes a base plate 3, with a steel ingot 1 on top of the base plate 3. A first steel plate 5 is installed on top of the steel ingot 1 via elastic rubber 2. The first steel plate 5 is installed at the bottom of an upper steel plate 8. The upper steel plate 8 is installed at the bottom of a support pad 18 via a pre-embedded steel plate 16. A steel cylinder is fitted over the steel ingot 1, elastic rubber 2, and the first steel plate 5. Temporary anchor bolts 10 are symmetrically arranged between the base plate 3 and the upper steel plate 8. Temporary diagonal braces 11 are inclined between the two temporary anchor bolts 10. Temporary lifting lugs 13 are welded to the top of the pre-embedded steel plate 16. The base plate 3, the foundation installation part of the support, is made of high-strength steel plate. Its planar dimensions are determined according to the actual load calculation, and it is usually rectangular with a thickness between 50 mm and 100 mm to ensure sufficient rigidity and stress diffusion capacity. A steel ingot 1 is located at the center of the top of the base plate 3. The steel ingot 1 is a forged steel part with high strength and toughness. The bottom surface of steel ingot 1 is fixed to the support base plate 3 by welding and non-destructive testing is performed to ensure reliability. The top of steel ingot 1 is flat, and its dimensions are determined according to the upper load. The top of the first steel plate 5 is installed on the bottom of the upper steel plate 8 of the support. The upper steel plate 8 of the support is a thick steel plate, and its thickness and planar dimensions are determined according to the upper structure. The bottom of the upper steel plate 8 of the support is fixed to the top of the first steel plate 5 by bolts or welding. In this embodiment, bolts are used for connection. The bolts are high-strength bolts, and the number and specifications are determined according to the load calculation. Pre-tightening force needs to be applied during installation. The embedded steel plate 16 is a thick steel plate, and its planar dimensions match those of the upper steel plate 8 of the support. The bottom of the embedded steel plate 16 is fixed to the top of the upper steel plate 8 of the support by welding. A temporary lifting lug 13 is also welded to the top of the embedded steel plate 16. The temporary lifting lug 13 is cut from a steel plate, and its design load meets the lifting requirements. It is used for lifting and positioning during the construction phase.

[0020] The temporary anchor bolt 10 is a high-strength steel rod with through holes at both ends. The bottom of the temporary anchor bolt 10 is bolted to the base plate 3 of the support, which has corresponding threaded holes. The top of the temporary anchor bolt 10 is bolted to the upper steel plate 8 of the support, which also has threaded holes. The temporary anchor bolt 10 is installed during bridge construction to fix the support position and prevent movement during concrete pouring or other construction activities. A temporary diagonal brace 11 is inclined between the two temporary anchor bolts 10. The temporary diagonal brace 11 is a steel rod or pipe, with both ends bolted to the temporary anchor bolts 10, forming a stable triangular structure. Specifically, the temporary anchor bolt 10, the base plate 3 of the support, and the temporary diagonal brace 11 form one triangular structure, while the upper steel plate 8 of the support, the temporary anchor bolt 10, and the temporary diagonal brace 11 form another triangular structure. These two triangular structures enhance the rigidity and reliability of the support during hoisting and installation, preventing damage during these processes. Temporary anchor bolts 10 and temporary diagonal braces 11 can be removed or retained as needed after the bridge is completed.

[0021] The steel cylinder can be a one-piece structure or a split structure. A split structure can be a combination of a first steel cylinder 4 and a second cylinder 6. The first steel cylinder 4 is fitted over the steel ingot 1 and is cylindrical, with its inner diameter slightly larger than the outer diameter of the ingot 1. The bottom of the first steel cylinder 4 is welded to the support base plate 3. A first steel plate 5 is installed on the top of the ingot 1 via elastic rubber 2. The elastic rubber 2 is a custom-made rubber product, made of natural or synthetic rubber, determined according to design load and displacement requirements. The elastic rubber 2 is cylindrical, and the first steel plate 5, elastic rubber 2, and ingot 1 are fixed together with bolts. The first steel plate 5 is a high-strength steel plate with a thickness between 20 mm and 40 mm, and its planar dimensions match those of the elastic rubber 2. The second steel cylinder 6 is also cylindrical, with its inner diameter slightly larger than the outer diameter of the first steel plate 5, forming a clearance fit. The bottom of the second steel cylinder 6 is bolted to the first steel cylinder 4, and its height covers the elastic rubber 2 and the first steel plate 5, providing lateral restraint and protection.

[0022] A sealing ring 9 is provided on the top of the elastic rubber 2. The sealing ring 9 is a rubber O-ring with a material compatible with the elastic rubber 2. It is installed in the groove on the top of the elastic rubber 2 to prevent moisture and dust from entering the contact surface between the elastic rubber 2 and the steel ingot 1, thereby extending its service life.

[0023] A waterproof and dustproof cover 12 is installed on the outside of the upper steel plate 8 of the support. In order to increase the waterproof and dustproof performance of the upper steel plate 8 of the support, a waterproof and dustproof cover 12 is installed on the outside of the upper steel plate 8 of the support. The waterproof and dustproof cover 12 is made of stainless steel or weathering steel plate, and its shape is cover-shaped. It covers the joint area between the upper steel plate 8 of the support and the lower structure, and is connected to the upper steel plate 8 of the support by bolts to prevent external environmental factors from corroding the internal components.

[0024] Multiple anchor bars 17 are spaced apart on the top of the embedded steel plate 16, and the anchor bars 17 are fixed to the supporting pad 18. Multiple U-shaped anchor bars 17 are also spaced apart on the top of the embedded steel plate 16, and the length of the anchor bars is determined according to the required embedment depth. The anchor bars 17 are fixed to the embedded steel plate 16 by welding, and their tops are embedded in the supporting pad 18. The supporting pad 18 is a concrete structure, and during pouring, it must be ensured that the anchor bars 17 are completely embedded and have sufficient protective layer thickness.

[0025] The bottom of the bearing base plate 3 is connected to the bearing pad 14, and the bottom of the bearing pad 14 is connected to the stiffening beam 15. The bottom of the bearing base plate 3 is fixedly connected to the bearing pad 14 by welding. The bearing pad 14 is also made of high-strength steel plate, and its size is slightly larger than that of the bearing base plate 3 to provide a more stable support surface. The bottom of the bearing pad 14 is connected to the stiffening beam 15 by high-strength bolts. The stiffening beam 15 is part of the main structure of the bridge and is made of steel. Its cross-sectional shape can be determined according to the bridge design. The connection between the bearing pad 14 and the stiffening beam 15 requires precise alignment.

[0026] The working mechanism of this bearing is as follows: Under normal use, the lateral load of the bridge is transferred to the first steel plate 5 through the upper steel plate 8 of the bearing, and then diffused to the bearing base plate 3 and stiffening beam 15 via the elastic rubber 2 and steel ingot 1. The elastic rubber 2 provides lateral stiffness and a small amount of shear deformation capacity. At the same time, the steel ingot 1 and the second steel cylinder 4 provide lateral restraint to limit excessive displacement. The double-triangular structure formed by the temporary anchor rod 10 and the temporary diagonal rod 11 with the bearing base plate 3 and the upper steel plate 8 ensures the stability of the bearing during the hoisting stage and avoids damage to the bearing.

[0027] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transverse wind-resistant support for a narrow space of a kilometer-class suspension bridge, comprising a support base plate (3), wherein a steel ingot (1) is provided on the top of the support base plate (3), a first steel plate (5) is installed on the top of the steel ingot (1) through an elastic rubber (2), the first steel plate (5) is installed on the bottom of a support upper steel plate (8), the support upper steel plate (8) is installed on the bottom of a support pad stone (18) through a pre-embedded steel plate (16), and a steel cylinder is sleeved on the outside of the steel ingot (1), the elastic rubber (2) and the first steel plate (5), characterized in that, Temporary anchor rods (10) are symmetrically arranged between the support base plate (3) and the support upper steel plate (8), and temporary diagonal rods (11) are inclinedly arranged between the two temporary anchor rods (10). Temporary lifting lugs (13) are welded to the top of the pre-embedded steel plate (16).

2. The transverse wind-resistant support for a narrow space in a kilometer-class suspension bridge according to claim 1, characterized in that, The top of the elastic rubber (2) is provided with a sealing ring (9).

3. The transverse wind-resistant support for a narrow space in a kilometer-class suspension bridge according to claim 1, characterized in that, A waterproof and dustproof cover (12) is provided on the outside of the steel plate (8) on the support.

4. The transverse wind-resistant support for a narrow space in a kilometer-class suspension bridge according to claim 1, characterized in that, Multiple anchor bars (17) are spaced apart on the top of the pre-embedded steel plate (16), and the anchor bars (17) are fixed on the supporting pad stone (18).

5. The transverse wind-resistant support for a narrow space in a kilometer-class suspension bridge according to any one of claims 1 to 4, characterized in that, The bottom of the support base plate (3) is connected to the support pad plate (14), and the bottom of the support pad plate (14) is connected to the stiffening beam (15).

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