Suspender replacement construction device for a suspension bridge

Abstract

The utility model discloses a kind of suspension bridge suspender replacement construction devices, the device includes the riding type cable clamp (2) being set on suspension cable (1) and the beam (4) being set in bridge (3) in bag, the riding type cable clamp (2) is connected with the pair of lower threaded steel (8) being set vertically in bag beam (4) by temporary sling (5), upper threaded steel (6) and flat pole beam (7).The utility model has the advantages of convenient to use, high reliability, using it can conveniently and quickly replace suspender, not only improve the replacement speed, but also effectively guarantee construction safety and quality, greatly save the time of artificial and mechanical equipment, reduce safety risk.

Description

Technical Field

[0001] This utility model relates to a suspension bridge suspension rod replacement device, and more particularly to a suspension bridge suspension rod replacement construction device. Background Technology

[0002] With my country's continuous development, the construction of new civil engineering projects is nearing completion. However, recent bridge collapses due to geological disasters have brought bridge reinforcement projects into the public eye. According to current regulations, suspension bridge suspenders for long-span bridges must be inspected after 15 years of design life. If they pass the inspection, they can continue to be used, but for a maximum of 20 years. Because suspenders are constantly exposed to the natural environment, enduring wind and rain erosion, temperature changes, and alternating loads, they are highly susceptible to fatigue damage and corrosion. These defects not only reduce the load-bearing capacity of the suspenders, threatening the structural safety of the bridge, but may also lead to a decline in the overall performance of the bridge, affecting its normal use. Suspensions that fail the 15-year inspection must be replaced immediately. Therefore, from around 2010 to the present, most long-span suspension bridges in China have required suspender replacement to meet traffic requirements.

[0003] Currently, there are two approaches to replacing suspension bridge suspenders. The first approach involves using a temporary suspender to release the tension of the original suspender, then tensioning a new suspender to the original length for replacement. However, this method faces numerous challenges, including difficulties in tensioning the new suspender, high safety risks, and slowed construction progress. It also risks damaging the original suspenders. The second approach involves installing temporary suspenders before construction, then tensioning them to lift the bridge deck before replacing the suspenders. However, this method is very limited; it can only be used for suspension bridges with steel truss main girders, not for other types of main girders, making it extremely restrictive. Utility Model Content

[0004] The purpose of this invention is to provide a suspension bridge hanger replacement construction device that is highly reliable, has clear force distribution, and is easy to construct.

[0005] The purpose of this utility model is achieved through the following technical solution: a suspension bridge suspender replacement construction device, the device including a straddle cable clamp set on the main cable and a suspending beam set on the bridge, the straddle cable clamp being connected to a pair of lower threaded steel bars vertically set on the suspending beam via a temporary suspender, upper threaded steel bars and a spreader beam.

[0006] The temporary sling is fitted onto the straddle-type cable clamp, with both ends of the temporary sling pointing downwards. The two ends of the temporary sling are respectively connected to the two ends of the horizontally set spreader beam via upper threaded steel bars, and the lower threaded steel bars are connected to the middle of the spreader beam.

[0007] For ease of connection, adapters are provided at both ends of the temporary sling, and the upper threaded steel bar is connected to the adapters.

[0008] Further description: the upper end of the lower threaded steel bar passes through the spreader beam, and a jack is provided at the end; a bracing angle is provided on the lower threaded steel bar and between the jack and the upper end face of the spreader beam.

[0009] In order to control the spatial position of the temporary sling, a restraint is provided on the temporary sling and located in the middle of the temporary sling.

[0010] To connect adjacent straddle clamps, the adjacent straddle clamps are connected by clamping rods.

[0011] Due to the adoption of the above technical solution, this utility model has the advantages of being easy to use and highly reliable. It can facilitate the quick and easy replacement of the suspension rod, which not only improves the replacement speed, but also effectively ensures construction safety and quality, greatly saves time for manpower and machinery, and reduces safety risks. Attached Figure Description

[0012] The accompanying drawings of this utility model are described below: Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the installation state of this utility model. Detailed Implementation

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. However, this utility model is not limited to these embodiments. Any improvements or substitutions based on the basic spirit of these embodiments shall still fall within the scope of protection claimed by the claims of this utility model.

[0015] Example 1: As Figure 1 , 2 As shown, a suspension bridge suspender replacement construction device includes a straddle cable clamp 2 installed on the main cable 1 and a suspending beam 4 installed on the bridge 3. The straddle cable clamp 2 is connected to a pair of lower threaded steel bars 8 vertically installed on the suspending beam 4 through a temporary suspender 5, an upper threaded steel bar 6 and a spreader beam 7.

[0016] The temporary sling 5 is fitted onto the straddle-type cable clamp 2, with both ends of the temporary sling 5 arranged downwards; the two ends of the temporary sling 5 are respectively connected to the two ends of the horizontally arranged spreader beam 7 via upper threaded steel bars 6, and the lower threaded steel bars 8 are connected to the middle of the spreader beam 7.

[0017] To facilitate the connection between the temporary sling and the upper threaded steel bar, conversion heads 9 are provided at both ends of the temporary sling 5, and the upper threaded steel bar 6 is connected to the conversion heads 9.

[0018] The lower threaded steel bar 8 passes through the flat beam 7 at its upper end, and a jack 10 is provided at the end. A support angle 11 is provided on the lower threaded steel bar 8 and between the jack 10 and the upper surface of the flat beam 7. In this utility model, the support angle 11 mainly serves to fix the upper side of the flat beam 7 and to provide tension for the flat beam 7 and the jack 10. The flat beam 7 mainly serves as a fixed point for tensioning the jack 10, the hoisting beam 4 mainly serves as the lower stress point, and the straddle-type cable clamp 2 mainly serves as the upper stress point.

[0019] Furthermore, a restraint device 12 is provided on the temporary sling 5 and located in the middle of the temporary sling 5. This is done to control the spatial position of the temporary sling and ensure that the temporary sling does not rotate.

[0020] In this invention, adjacent straddle-type cable clamps 2 are connected by clamping rods 13. The clamping rods 13 are mounted on cable clamps 14 attached to the main cable 1.

[0021] This utility model is used as follows: First, the processed temporary cable clamps are inspected to ensure they meet the on-site construction requirements. The straddle-type cable clamps are inspected first, and temporary slings 5 ​​are installed directly opposite them. The entire assembly is then hoisted. After hoisting, the temporary slings 5 ​​are adjusted to ensure they are symmetrical. After inspection and approval, subsequent construction proceeds. Then, the restraint device 12 is installed. The width of the restraint device 12 is required to be slightly larger than the width of the lower flat beam 7 to ensure the smooth installation of the jacks. The adapter 9 is installed to connect the temporary slings 5 ​​to the upper threaded steel bar 6. After connection, the connector is inspected to ensure a secure overall connection. Install the spreader beam 7 and connect it to the upper threaded steel bar 6. During the connection process, the spreader beam 7 has 4 holes, of which the two outer holes are for the upper threaded steel bar 6 to pass through and be fixed with bolts. Level the spreader beam 7. Then connect the lower threaded steel bar 8 to the spreader beam 7 and fix it. Double nuts are used for fixing to ensure the safety of the load. After installation, install the lifting beam 4, use a truck crane to lift the lifting beam 4 to the designated position, and fix it to the fixed position of the steel beam. Connect the lower threaded steel bar 8 to the lifting beam 4. Finally, install the jack 10 on the spreader beam 7. After the overall installation is completed, conduct an inspection to check the overall construction and installation quality. After the installation is completed, perform preliminary tensioning. After the preliminary tensioning is completed, adjust the tooling to achieve a symmetrical stress state, and complete the installation of the entire temporary tooling.

Claims

1. A suspension bridge hanger replacement construction device, characterized in that: The device includes a straddle cable clamp (2) installed on the main cable (1) and a sling beam (4) installed on the bridge (3). The straddle cable clamp (2) is connected to a pair of lower threaded steel bars (8) vertically installed on the sling beam (4) via a temporary sling (5), an upper threaded steel bar (6) and a spreader beam (7).

2. The suspension bridge hanger replacement construction device as described in claim 1, characterized in that: The temporary sling (5) is fitted on the straddle clamp (2), with both ends of the temporary sling (5) arranged downwards; the two ends of the temporary sling (5) are respectively connected to the two ends of the horizontally arranged spreader beam (7) through the upper threaded steel (6), and the lower threaded steel (8) is connected to the middle of the spreader beam (7).

3. The suspension bridge hanger replacement construction device as described in claim 2, characterized in that: in Both ends of the temporary sling (5) are equipped with conversion heads (9), and the upper threaded steel bar (6) is connected to the conversion head (9).

4. The suspension bridge hanger replacement construction device as described in claim 3, characterized in that: The upper end of the lower threaded steel bar (8) passes through the flat beam (7), and a jack (10) is provided at the end; a bracing angle (11) is provided on the lower threaded steel bar (8) and between the jack (10) and the upper end face of the flat beam (7).

5. The suspension bridge hanger replacement construction device as described in claim 4, characterized in that: in A restraint (12) is provided on the temporary sling (5) and located in the middle of the temporary sling (5).

6. The suspension bridge hanger replacement construction device as described in claim 5, characterized in that: Adjacent straddle cable clamps (2) are connected by clamping rods (13).

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