A telescopic structure specially used for large bridges

Abstract

The utility model discloses a special telescopic structure for a large bridge, comprising a bridge body, an expansion joint is arranged at the middle position of the bridge body, support members are arranged at the left and right sides of the expansion joint respectively, an arc top is arranged at the upper position of the bridge body, a positioning block is arranged at the middle position of the top of the arc top, support plates are arranged at the left and right sides of the positioning block respectively, an auxiliary member is arranged at the middle position of the bottom of the support plate, and sewage troughs are respectively opened on the left and right sides of the bridge body, the sewage trough is located at the position below the side edge of the arc top, the support plate in the support member is aligned with the inner cavity of the positioning block at the bottom of the arc top and inserted so that the side edge of the arc top is inserted into the sewage trough, dust and sewage flow into the sewage trough below the side edge of the arc top through the curved structure of the arc top, and the sewage flows to the edge of the bridge body again through the design of the sewage trough with high inside and low outside, so as to prevent the accumulation of ash and slag in the expansion joint of the bridge, so that the expansion joint is difficult to provide expansion and contraction space for the bridge deck, thereby causing the problem of reduced safety of the bridge.

Description

Technical Field

[0001] The utility model belongs to the technical field related to bridge design, and in particular relates to a special telescopic structure for a large bridge. Background Art

[0002] Bridge expansion joints are a special design in bridge structures that allow bridges to expand and contract under different circumstances. This design takes into account the deformation and stress that may occur in the bridge under the influence of factors such as thermal expansion and contraction, earthquakes, and wind loads, to ensure the structural stability and safety of the bridge. Bridge expansion joints are usually located in the connecting parts of the bridge, including both ends and the middle. It is a gap structure used to compensate for the expansion and contraction of the bridge, which can allow the bridge to change in length in the longitudinal direction.

[0003] However, existing bridge expansion joints will accumulate ash and slag in the gaps, which can easily clog the expansion joints. After a period of time, this will affect the free deformation of the expansion joints or cause damage to the expansion joints, making it difficult for the expansion joints to provide expansion space for the bridge deck, thereby reducing the safety of the bridge. Utility Model Content

[0004] The purpose of the utility model is to provide a special expansion structure for large bridges to solve the problem proposed in the above-mentioned background technology that the expansion joints of existing bridges will accumulate ash and slag in the gaps, which will easily block the expansion joints, affect the free deformation of the expansion joints or cause damage to the expansion joints after a period of time, making it difficult for the expansion joints to provide expansion space for the bridge deck, thereby reducing the safety of the bridge.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic structure specially used for a large bridge, comprising a bridge body;

[0006] An expansion joint is arranged in the middle of the bridge body, and support members are arranged at the left and right sides of the expansion joint respectively. A steel bar ring is arranged at the outer side and bottom of the support member, and reinforcing ribs are arranged at the inner corners of the steel bar ring;

[0007] An arc top is arranged at the upper position of the bridge body, a positioning block is arranged at the middle position of the top of the arc top, and support plates are arranged on the left and right sides of the positioning block respectively.

[0008] Preferably, a cavity is opened at the middle position inside the positioning block, a spring is arranged at the middle position of the cavity, and the spring is fixedly connected to the left and right side support plates.

[0009] Preferably, an auxiliary component is provided at the middle position of the bottom of the support plate, the top of the auxiliary component is fixedly connected to the support plate, and the bottom of the auxiliary component is fixedly connected to the support component.

[0010] Preferably, sewage troughs are respectively provided on the left and right sides of the bridge body, and the sewage troughs are located below the side edges of the arc top.

[0011] Preferably, a tooth block is arranged at the inner side of the support member, and bite teeth are arranged on the left and right sides of the tooth block respectively.

[0012] Preferably, a slide groove is provided in the internal array of the biting teeth, and the tooth block and the biting teeth are nested and connected by pins.

[0013] Preferably, a support member is provided at the top of the support member, and the support member is arranged in an arc shape.

[0014] Preferably, the arc top is a curved surface design, the sewage trough is an arc-shaped setting with a high inside and a low outside, the inside of the bridge body is filled with cement, and the arc top, support parts, tooth blocks and bite teeth are steel structures.

[0015] Compared with the prior art, the utility model provides a telescopic structure specially used for large bridges, which has the following beneficial effects:

[0016] 1. Through the arrangement of the arc top, positioning block, support plate, auxiliary parts and sewage trough, the support plate in the support part is aligned with the inner cavity of the positioning block at the bottom of the arc top and inserted so that the side edge of the arc top is inserted into the sewage trough. Dust and sewage flow into the sewage trough below the side edge of the arc top through the curved structure of the arc top, and the sewage flows to the edge of the bridge body again through the design of the sewage trough with high inside and low outside, so as to prevent the accumulation of ash and slag in the expansion joint of the bridge, block the expansion joint, make it difficult for the expansion joint to provide expansion space for the bridge deck, and thus lead to the problem of reduced safety of the bridge.

[0017] 2. Through the setting of support parts, tooth blocks, teeth, slide grooves and pins, the support parts are clamped and fixed to the bridge body, and cement is filled inside. The support parts are stably fixed on the bridge body through steel rings and reinforcing bars. Then, the tooth blocks and teeth are fixed, and the slide grooves of the teeth are aligned with the openings in the tooth blocks. The tooth blocks and teeth are nested and connected through pins, which can effectively solve the problems of expansion and contraction deformation, force transmission, etc. between bridge spans. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the biting teeth in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the arc top in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the middle support plate of the utility model.

[0022] In the figure: 1. bridge body; 2. arc top; 3. support member; 4. steel bar ring; 5. reinforcing rib; 6. sewage trough; 7. tooth block; 8. bite tooth; 9. positioning block; 10. spring; 11. support member; 12. pin; 13. slide groove; 14. support plate; 15. auxiliary parts. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-4 A telescopic structure dedicated to a large bridge is shown, comprising a bridge body 1;

[0025] An expansion joint is arranged in the middle of the bridge body 1, and support members 3 are arranged at the left and right sides of the expansion joint respectively, a steel bar ring 4 is arranged at the outer side and bottom of the support member 3, and reinforcing ribs 5 are arranged at the inner corners of the steel bar ring 4;

[0026] An arc top 2 is arranged above the bridge body 1 , a positioning block 9 is arranged at the middle position of the top of the arc top 2 , and support plates 14 are arranged on the left and right sides of the positioning block 9 respectively.

[0027] A cavity is provided at the middle position inside the positioning block 9 , and a spring 10 is provided at the middle position of the cavity. The spring 10 is fixedly connected to the left and right side support plates 14 .

[0028] An auxiliary component 15 is disposed at the middle position of the bottom of the support plate 14 . The top of the auxiliary component 15 is fixedly connected to the support plate 14 , and the bottom of the auxiliary component 15 is fixedly connected to the support component 3 .

[0029] Sewage troughs 6 are respectively provided on the left and right sides of the bridge body 1 , and the sewage troughs 6 are located below the side of the arc top 2 .

[0030] A tooth block 7 is arranged at the inner side of the support member 3 , and bite teeth 8 are arranged on the left and right sides of the tooth block 7 .

[0031] A sliding groove 13 is provided inside the biting teeth 8 , and the tooth block 7 and the biting teeth 8 are nested and connected by pins 12 .

[0032] A support member 11 is provided at the top of the support member 3, and the support member 11 is arranged in an arc shape.

[0033] The arc top 2 is a curved surface design, the sewage tank 6 is an arc-shaped setting with a high inside and a low outside, the inside of the bridge body 1 is filled with cement, and the arc top 2, the support member 3, the tooth block 7 and the bite tooth 8 are steel structures.

[0034] In this embodiment, the utility model is specifically a telescopic structure specially used for large bridges. During installation, the support member 3 is clamped and fixed to the bridge body 1, and cement is filled inside. The support member 3 is stably fixed on the bridge body 1 through the steel ring 4 and the reinforcing ribs 5, and then the tooth block 7 and the biting tooth 8 are fixed, and the slide groove 13 of the biting tooth 8 is aligned with the opening in the tooth block 7. The tooth block 7 and the biting tooth 8 are nested and connected through the pin 12, and then the support plate 14 in the support member 3 is aligned with the inner cavity of the positioning block 9 at the bottom of the arc top 2 and inserted, so that the side edge of the arc top 2 is inserted into the sewage tank 6 to complete the installation and fixation.

[0035] like Figure 1 and Figure 3-4 As shown, a cavity is opened in the middle position inside the positioning block 9, a spring 10 is arranged in the middle position of the cavity, the spring 10 is fixedly connected to the left and right support plates 14, an auxiliary component 15 is arranged in the middle position of the bottom of the support plate 14, the top of the auxiliary component 15 is fixedly connected to the support plate 14, the bottom of the auxiliary component 15 is fixedly connected to the support component 3, and sewage troughs 6 are respectively opened on the left and right sides of the bridge body 1, and the sewage troughs 6 are located below the side of the arc top 2.

[0036] Preferably, the support plate 14 in the support member 3 is inserted into the inner cavity of the positioning block 9 at the bottom of the arc top 2, so that the side edge of the arc top 2 is inserted into the sewage trough 6, and dust and sewage flow into the sewage trough 6 below the side edge of the arc top 2 through the curved structure of the arc top 2, and the sewage flows to the edge of the bridge body again through the design of the sewage trough 6 with high inside and low outside, so as to prevent the accumulation of ash and slag in the expansion joint of the bridge, which will block the expansion joint and make it difficult for the expansion joint to provide expansion space for the bridge deck, thereby reducing the safety of the bridge.

[0037] like Figure 1 and Figure 2 As shown, a tooth block 7 is provided at the inner side of the support member 3 , and teeth 8 are provided on the left and right sides of the tooth block 7 , respectively. A slide groove 13 is provided in the internal array of the teeth 8 , and the tooth block 7 and the teeth 8 are nested and connected by pins 12 .

[0038] Preferably, the support member 3 is clamped and fixed to the bridge body 1, and cement is filled inside. The support member 3 is stably fixed on the bridge body 1 through the steel ring 4 and the reinforcing ribs 5. Then, the tooth block 7 and the biting tooth 8 are fixed, and the slide groove 13 of the biting tooth 8 is aligned with the opening in the tooth block 7. The tooth block 7 and the biting tooth 8 are nested and connected through the pin 12, which can effectively solve the problems of expansion and contraction deformation, force transmission, etc. between the bridge spans.

[0039] like Figure 1-4 As shown, a support member 11 is provided at the top of the support member 3, the support member 11 is in an arc shape, the arc top 2 is a curved surface design, the sewage trough 6 is in an arc shape with a high inside and a low outside, the inside of the bridge body 1 is filled with cement, and the arc top 2, the support member 3, the tooth block 7 and the bite tooth 8 are steel structures.

[0040] Optionally, when a vehicle passes through the arc top 2, the arc top 2 is compressed downward, and the arc top 2 is supported by the arc-shaped setting of the support member 11 to prevent the arc top 2 from collapsing downward and causing personal injury. The steel structure has sufficient strength and durability to withstand the load of vehicles or pedestrians, thereby increasing the service life of the device and reducing costs.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic structure specially used for a large bridge, comprising a bridge body (1); An expansion joint is provided in the middle of the bridge body (1), support members (3) are provided at the left and right sides of the expansion joint respectively, a steel bar ring (4) is provided at the outside and bottom of the support member (3), and reinforcing ribs (5) are provided at the inner corners of the steel bar ring (4); Features: An arc top (2) is provided at the upper position of the bridge body (1), a positioning block (9) is provided at the middle position of the top of the arc top (2), and support plates (14) are provided on the left and right sides of the positioning block (9); An auxiliary component (15) is provided at the middle position of the bottom of the support plate (14); the top of the auxiliary component (15) is fixedly connected to the support plate (14); and the bottom of the auxiliary component (15) is fixedly connected to the support component (3); The left and right sides of the bridge body (1) are respectively provided with sewage troughs (6), and the sewage troughs (6) are located below the side of the arc top (2).

2. A telescopic structure for large bridges according to claim 1, characterized in that: A cavity is provided at the middle position inside the positioning block (9), a spring (10) is provided at the middle position of the cavity, and the spring (10) is fixedly connected to the left and right side support plates (14).

3. The telescopic structure for a large bridge according to claim 1, characterized in that: A tooth block (7) is arranged at the inner side of the support member (3), and bite teeth (8) are respectively arranged on the left and right sides of the tooth block (7).

4. A telescopic structure for large bridges according to claim 3, characterized in that: The internal array of the biting teeth (8) is provided with a slide groove (13), and the tooth block (7) and the biting teeth (8) are connected by being nested via a pin (12).

5. The telescopic structure for large bridges according to claim 1, characterized in that: A support member (11) is provided at the top of the support member (3), and the support member (11) is arranged in an arc shape.

6. The telescopic structure for large bridges according to claim 1, characterized in that: The arc top (2) is of curved surface design, the sewage trough (6) is of arc-shaped design with a high interior and a low exterior, the interior of the bridge body (1) is filled with cement, and the arc top (2), the supporting member (3), the tooth block (7) and the biting tooth (8) are steel structures.

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