Communication type anti-sliding structure suitable for suspension bridge cable clamp and installation method

Abstract

The application discloses a communication type anti-sliding structure suitable for a suspension bridge cable clamp and a mounting method, and relates to the technical field of suspension bridges, which comprises a main cable arranged in a main cable saddle, two cable clamps on the main cable, and an anti-sliding cable between the two cable clamps; a vibration-proof elastic connector is arranged between the main cable and the anti-sliding cable; the main cable saddle is provided with a cable bearing groove for bearing the main cable; the strands of the main cable are regularly arranged in the cable bearing groove, and a plurality of zinc blocks are arranged above the cable bearing groove to fill the opening of the cable bearing groove; a plurality of saddle wall pull rods are arranged on the side walls of the cable bearing groove to oppositely pull and constrain the cable bearing groove; the filling parts of the plurality of zinc blocks at the opening of the cable bearing groove are provided with curved sheaths which are curved in correspondence with the extension track of the main cable; and the inner cavities of the curved sheaths are provided with cable bodies of the anti-sliding cable. The application can improve the anti-sliding performance of the cable clamp, when the cable clamp slides downward, the tension of the cable gradually increases, part of the sliding force of the cable clamp can be offset, until the force balance is reached, and then the cable clamp no longer slides downward.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field, in particular to a communication type anti-sliding structure and installation method suitable for a cable clamp of a suspension bridge. BACKGROUND

[0002] The slope of the main cable of the suspension bridge gradually increases near the tower position, and the cable clamp sliding force gradually increases due to the suspender. The conventional method is to increase the number of high-strength bolts of the cable clamp to increase the total pre-tightening force, so as to meet the anti-sliding requirements of the cable clamp.

[0003] However, as the slope of the main cable increases, the cable clamp sliding force will gradually increase, and the length of the cable clamp designed by the above method will be large, which will have a certain impact on the main cable line shape. Moreover, when the number of high-strength bolts is large, the pre-tightening force of the bolts will have certain unevenness, which is not conducive to fully exerting the anti-sliding performance of the cable clamp.

[0004] Therefore, how to solve the contradiction between the length of the cable clamp and the slope of the main cable has become a technical problem that technicians in the field need to solve urgently. SUMMARY

[0005] In view of the above defects of the prior art, the present application provides a communication type anti-sliding structure and installation method suitable for a cable clamp of a suspension bridge, which aims to solve the contradiction between the length of the cable clamp and the slope of the main cable.

[0006] To achieve the above-mentioned purpose, the present application discloses a communication type anti-sliding structure suitable for a cable clamp of a suspension bridge, comprising a main cable arranged in a main cable saddle, two cable clamps are symmetrically arranged on the main cable according to the position of the main cable saddle;

[0007] An anti-sliding cable is arranged between the two cable clamps and extends along the corresponding part of the main cable;

[0008] At least two anti-vibration elastic connectors are arranged between the main cable and the anti-sliding cable between each cable clamp and the main cable saddle;

[0009] The main cable saddle is provided with a cable bearing groove for bearing the main cable;

[0010] The strands 33 of the main cable are regularly arranged in the cable bearing groove, and a plurality of zinc blocks are arranged above the cable bearing groove to fill the opening of the cable bearing groove;

[0011] A plurality of saddle wall pull rods are arranged on the two side walls of the cable bearing groove near the upper end portion to constrain the cable bearing groove by pulling;

[0012] A plurality of zinc block filling portions are arranged at the opening of the cable bearing groove, corresponding to the position directly above the main cable and the position below the plurality of saddle wall pull rods, and a curved sheath corresponding to the extension track of the main cable is arranged.

[0013] The curved sheath has a groove structure with an opening at the top, and the inner cavity contains the cable body of the anti-slip cable.

[0014] In some embodiments, each of the cable clamps is provided with an anti-slip zipper lug on the portion above the corresponding main cable;

[0015] Each of the aforementioned anti-slip zipper lugs is hinged to the corresponding end of the anti-slip cable via a pin.

[0016] In some embodiments, each of the cable clamps is provided with a suspender lug on the portion located below the corresponding main cable;

[0017] Each of the aforementioned boom lugs is connected to the corresponding boom;

[0018] Each of the aforementioned cable clamps includes an upper clamp half and a lower clamp half;

[0019] Each of the cable clamp upper half and the corresponding cable clamp lower half has a strip-shaped groove structure, and each of the opposite sides has a through groove with a semi-circular cross-section. The main cable is secured by splicing the two through grooves above and below the corresponding main cable.

[0020] Each of the upper and lower halves of the cable clamp is provided with multiple high-strength bolts at positions on both sides of the main cable, and the main cable is clamped between them by tightening the multiple high-strength bolts.

[0021] In some embodiments, the upper half of each cable clamp and the corresponding anti-slip zipper lug, as well as the lower half of each cable clamp and the corresponding boom lug, are all integrally cast from cast steel.

[0022] In some embodiments, the cable body is a multi-strand steel strand with an outer PE sheath;

[0023] The PE sheath is equipped with a shock absorber limiting ring.

[0024] In some embodiments, both ends of the cable body are connected to the connecting rod by anchors;

[0025] The other end of each of the aforementioned connecting rods is connected to the corresponding fork lug via a corresponding tension nut;

[0026] Each of the fork lugs is hinged to the corresponding anti-slip zipper lug via a pin.

[0027] In some embodiments, each of the vibration-damping resilient connectors includes two clamp structures that respectively match the main cable and the anti-slip cable;

[0028] Each of the two clamp structures of the vibration-damping elastic connector is connected by two half-side clamps, and each clamps the corresponding main cable or the corresponding anti-slip cable by setting clamp bolts.

[0029] In some embodiments, an elastic pad is provided between each of the clamp structures and the corresponding main cable or the corresponding anti-slip cable.

[0030] In some embodiments, the cross-sectional area of ​​the anti-slip cable is 0.5T×cosα / f t ;

[0031] Where T is the force borne by the boom;

[0032] α is the angle between the suspender and the main cable;

[0033] f t This is the design value for the tensile strength of the material of the anti-slip cable.

[0034] The present invention also provides an installation method for a connected anti-slip structure suitable for cable clamps of suspension bridges, characterized by comprising the following steps:

[0035] Step 1: Hoist the main cable saddle to the top of the bridge tower. During the installation of the main cable saddle at the top of the tower, the main cable saddle is pushed to the required position by the reaction frame. Then, the main cable is installed in sequence, and the strands 33 of the main cable are regularly arranged in the cable receiving groove.

[0036] Step 2: Install each of the cable clamps in sequence, and connect the upper half of each cable clamp and the corresponding lower half of the cable clamp with multiple high-strength bolts to clamp the main cable.

[0037] Step 3: Install all the suspenders in sequence and tension them to the design load. During the process, push the reaction frame to drive the main cable saddle so that the main cable reaches the required extension trajectory.

[0038] Step 4: Pass the cable body through the cable receiving groove and place it inside the curved sheath. Connect both ends of the cable body to the corresponding cable clamps via pins.

[0039] Step 5: Adjust the tension nuts at both ends of the cable body to reduce the distance between the corresponding connecting rods and fork lugs, so that the cable body is in a taut state when the bridge is completed. The preload of the cable body is 0.1 times the cable force design value.

[0040] Step 6: Install all zinc blocks and all the saddle wall tie rods to secure the cable body in the cable tray;

[0041] Step 7: Install the vibration-damping elastic connector. For each vibration-damping elastic connector, attach the two halves of the clamp connected by the two halves of the clamp to the corresponding main cable and the corresponding anti-slip cable, and tighten the corresponding clamp bolts.

[0042] The beneficial effects of this invention are:

[0043] The application of this invention can improve the anti-slip performance of the cable clamp. When the cable clamp slides down, the tension of the cable gradually increases, which can offset part of the downward force of the cable clamp until the force balance is reached, and then the cable clamp will no longer slide down.

[0044] This invention tensions the anti-slip cables in the completed bridge state, preemptively offsetting some of the downward force. This reduces the number of high-strength bolts in the cable clamps, effectively decreasing the clamp length and minimizing the impact on the main cable alignment. The cable clamps are cast steel components; reducing their size facilitates manufacturing, transportation, and installation.

[0045] This invention can adjust the anti-slip performance of the cable clamp by adjusting the anti-slip cable rules and initial tension. It has a simple structure and significant effect.

[0046] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0047] Figure 1 A general layout diagram of an embodiment of the present invention is shown.

[0048] Figure 2 The diagram shows a side view of the cable clip according to an embodiment of the present invention.

[0049] Figure 3 The diagram shows the end face structure of the cable clamp in one embodiment of the present invention.

[0050] Figure 4 A schematic diagram of the anti-slip cable structure is shown in one embodiment of the present invention.

[0051] Figure 5 This diagram illustrates the connection structure between the anti-slip cable and the main cable in one embodiment of the present invention.

[0052] Figure 6 This diagram shows a structural schematic of the cable-bearing groove of the main cable saddle in one embodiment of the present invention.

[0053] Figure 7 A schematic diagram of the structure of the curved sheath in one embodiment of the present invention is shown.

[0054] Figure 8 A structural view of a vibration-damping elastic connector according to an embodiment of the present invention is shown. Detailed Implementation

[0055] Example 1: As Figure 1 , Figure 6 and Figure 7 As shown, the connected anti-slip structure applicable to cable clamps of suspension bridges includes a main cable installed on the main cable saddle 3, and two cable clamps 1 are symmetrically provided on the main cable according to the position of the main cable saddle 3;

[0056] An anti-slip cable 2 extending along the corresponding section of the main cable is provided between the two cable clamps 1;

[0057] At least two anti-vibration elastic connectors 4 are provided between the main cable and the anti-slip cable 2 between each cable clamp 1 and the main cable saddle 3;

[0058] The main cable saddle 3 is equipped with a cable-bearing groove 31 for supporting the main cable;

[0059] The main cable strands 33 are arranged regularly in the cable receiving groove 31, and multiple zinc blocks 34 are arranged above to fill the opening of the cable receiving groove 31.

[0060] Multiple saddle wall tie rods 32 spanning the cable receiving groove 31 are provided on the side walls near the upper part of both sides of the cable receiving groove 31 to provide tension constraint on the cable receiving groove 31.

[0061] At the opening of the cable tray 31, where multiple zinc blocks 34 fill the portion, directly above the main cable and below multiple saddle wall tie rods 32, a curved sheath 35 is provided that curves in accordance with the extension trajectory of the main cable.

[0062] The curved sheath 35 has a groove structure with an opening at the top, and the inner cavity is equipped with the cable body 21 of the anti-slip cable 2.

[0063] Multiple zinc blocks 34 are used to fill the opening of the cable receiving groove 31 on the regularly arranged main cable strands 33 to prevent corrosion of the steel wires of the strands 33;

[0064] Multiple saddle wall tie rods 32 spanning the upper part of the side walls of the cable receiving groove 31 form a tension constraint, which can prevent the saddle walls on both sides of the cable receiving groove 31 from expanding outward and deforming.

[0065] The cable body 21 is padded by a curved sheath 35 to ensure its durability, and its displacement is constrained by multiple zinc blocks 34 and multiple saddle wall tie rods 32 above.

[0066] like Figure 2 and Figure 3 As shown, in some embodiments, each cable clamp 1 is provided with an anti-slip zipper lug 14 on the portion above the corresponding main cable;

[0067] Each anti-slip zipper lug 14 is hinged to one end of the anti-slip cable 2 via a pin 5.

[0068] In some embodiments, each cable clamp 1 is provided with a suspender lug 13 on the portion located below the corresponding main cable;

[0069] Each boom lug 13 is connected to the corresponding boom 16;

[0070] Each cable clamp 1 includes an upper half clamp 11 and a lower half clamp 12;

[0071] Each cable clamp upper half 11 and corresponding cable clamp lower half 12 are strip-shaped groove structures, and each opposite side is provided with a through groove with a semi-circular cross-section. The main cable is clamped by splicing the two through grooves above and below the corresponding main cable.

[0072] Each cable clamp upper half 11 and corresponding cable clamp lower half 12 are provided with multiple high-strength bolts 15 at the positions on both sides of the corresponding main cable. The main cable between them is clamped by tightening the multiple high-strength bolts 15.

[0073] In some embodiments, each cable clamp upper half 11 and the corresponding anti-slip zipper lug 14, and each cable clamp lower half 12 and the corresponding boom lug 13 are all integrally cast from cast steel.

[0074] like Figure 4 and Figure 5 As shown, in some embodiments, the cable body 21 is a multi-strand steel strand with an outer PE sheath 22;

[0075] The PE sheath 22 is equipped with a shock absorber limit ring 27.

[0076] The cable body 21 is made of steel strands, and the pattern of the steel strands can be adjusted according to the anti-slip requirements. The outer PE sheath 22 is used to improve the durability of the cable. The damper limit ring 27 is integrally formed with the PE sheath 22.

[0077] In some embodiments, both ends of the cable body 21 are connected to the connecting rod 24 via anchors 23;

[0078] The other end of each connecting rod 24 is connected to the corresponding fork lug 26 via a corresponding tension nut 25;

[0079] Each fork lug 26 is hinged to the corresponding anti-slip zipper lug 14 via a pin.

[0080] like Figure 8 As shown, in some embodiments, each vibration-damping elastic connector 4 includes two clamp structures that respectively match the main cable and the anti-slip cable 2;

[0081] Each vibration-damping elastic connector 4 has two clamping structures connected by two half-side clamps 41, and each clamps the corresponding main cable or the corresponding anti-slip cable 2 by setting clamp bolts 42.

[0082] In some embodiments, each clamping structure is provided with an elastic pad 43 between itself and the corresponding main cable or the corresponding anti-slip cable 2.

[0083] In some embodiments, the cross-sectional area of ​​the anti-slip cable 2 is 0.5T×cosα / f t ;

[0084] Where T is the force borne by the boom 16;

[0085] α is the angle between the boom 16 and the main cable;

[0086] f t The design value of the tensile strength of the material for anti-slip cable 2.

[0087] The present invention also provides an installation method for a connected anti-slip structure suitable for cable clamps of suspension bridges, comprising the following steps:

[0088] Step 1: Hoist the main cable saddle 3 to the top of the bridge tower. During the installation of the main cable saddle 3 at the top of the tower, the main cable saddle 3 is pushed to the required position by the reaction frame. Then, the main cables are installed in sequence, and the cable strands 33 of the main cables are regularly arranged in the cable receiving groove 31.

[0089] Step 2: Install each cable clamp 1 in sequence, and connect the upper half 11 and the corresponding lower half 12 of each cable clamp 1 with multiple high-strength bolts 15 and clamp the main cable.

[0090] Step 3: Install all the suspenders 16 in sequence and tension them to the design load. During the process, the main cable saddle 3 is driven by the jacking reaction frame to make the main cable reach the required extension trajectory.

[0091] Step 4: Pass the cable body 21 through the cable receiving groove 31 and place it inside the curved sheath 35. Connect both ends of the cable body 21 to the corresponding cable clamps 1 through the pins 5.

[0092] Step 5: Adjust the tension nuts 25 at both ends of the cable body 21 to reduce the distance between the corresponding connecting rods 24 and fork lugs 26, so that the cable body 21 is in a taut state when the bridge is completed. The preload of the cable body 21 is 0.1 times the cable force design value.

[0093] Step 6: Install all zinc blocks 34 and all saddle wall tie rods 32, and fix the cable body 21 in the cable tray 31;

[0094] Step 7: Install the vibration-damping elastic connector 4. Secure each vibration-damping elastic connector 4 to the corresponding main cable and the corresponding anti-slip cable 2 by clamping the two halves of the clamp 41 connected by the two halves of the clamp 41. Tighten the clamp bolts 42 in the corresponding clamps.

[0095] In practical applications, the cable body 21 is kept taut when the bridge is completed. The preload of the cable body 21 is set to 0.1 times the cable force design value. When the cable clamp slides down, the tension of the cable body 21 can be gradually increased to counteract the sliding force of the cable clamp 1 until the force balance is reached, and then the cable clamp 1 will no longer slide down.

[0096] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A connected anti-slip structure suitable for cable clamps of suspension bridges, comprising a main cable installed on the main cable saddle (3); characterized in that, Two cable clamps (1) are provided symmetrically on the main cable according to the position of the main cable saddle (3); An anti-slip cable (2) extending along the corresponding portion of the main cable is provided between the two cable clamps (1); At least two anti-vibration elastic connectors (4) are provided between the main cable and the anti-slip cable (2) between each of the cable clamps (1) and the main cable saddle (3). The main cable saddle (3) is provided with a cable-bearing groove (31) for bearing the main cable; The main cable strands (33) are arranged regularly in the cable receiving groove (31), and multiple zinc blocks (34) are arranged above to fill the opening of the cable receiving groove (31); The cable receiving groove (31) has multiple saddle wall tie rods (32) on both sides near the upper part to provide tension constraint on the cable receiving groove (31); The portion of the cable receiving groove (31) filled by the zinc blocks (34) is provided with a curved sheath (35) that curves in accordance with the extension trajectory of the main cable, located directly above the main cable and below the multiple saddle wall tie rods (32). The curved sheath (35) has a groove structure with an opening at the top and the inner cavity is provided with the cable body (21) of the anti-slip cable (2).

2. The connected anti-slip structure for cable clamps of suspension bridges according to claim 1, characterized in that, Each of the cable clamps (1) is provided with an anti-slip zipper lug (14) on the portion above the corresponding main cable. Each of the anti-slip zipper lugs (14) is hinged to one end of the anti-slip cable (2) by means of a pin (5).

3. The connected anti-slip structure for cable clamps of suspension bridges according to claim 1, characterized in that, Each of the cable clamps (1) is provided with a suspender lug (13) on the portion below the corresponding main cable. Each of the aforementioned boom lugs (13) is connected to the corresponding boom (16); Each of the cable clips (1) includes an upper half-clamp (11) and a lower half-clamp (12). Each of the upper half of the cable clamp (11) and the corresponding lower half of the cable clamp (12) is a strip-shaped groove structure, and each of the opposite sides is provided with a through groove with a semi-circular cross-section. The main cable is clamped by splicing the two through grooves above and below the corresponding main cable. Each of the upper half of the cable clamp (11) and the corresponding lower half of the cable clamp (12) is provided with multiple high-strength bolts (15) at the positions on both sides of the main cable, and the main cable between them is clamped by tightening the multiple high-strength bolts (15).

4. The connected anti-slip structure for cable clamps of suspension bridges according to claim 3, characterized in that, Each of the upper half of the cable clamp (11) and the corresponding anti-slip zipper lug (14), and each of the lower half of the cable clamp (12) and the corresponding boom lug (13) are made of cast steel as a whole.

5. The connected anti-slip structure for cable clamps of suspension bridges according to claim 3, characterized in that, The cable body (21) is a multi-strand steel strand with an outer PE sheath (22). The PE sheath (22) is provided with a shock absorber limiting ring (27).

6. The connected anti-slip structure for cable clamps of suspension bridges according to claim 3, characterized in that, Both ends of the cable body (21) are connected to the connecting rod (24) by anchors (23); The other end of each of the connecting rods (24) is connected to the corresponding fork lug (26) via a corresponding tension nut (25); Each of the fork lugs (26) is hinged to the corresponding anti-slip zipper lug (14) via a pin.

7. The connected anti-slip structure for cable clamps of suspension bridges according to claim 1, characterized in that, Each of the aforementioned anti-vibration elastic connectors (4) includes two clamp structures that are respectively matched with the main cable and the anti-slip cable (2); Each of the two clamp structures of the anti-vibration elastic connector (4) is connected by two half-side clamps (41), and each is clamped by clamp bolts (42) to the corresponding main cable or the corresponding anti-slip cable (2).

8. The connected anti-slip structure for cable clamps of suspension bridges according to claim 7, characterized in that, Each of the clamp structures is provided with an elastic pad (43) between itself and the corresponding main cable or the corresponding anti-slip cable (2).

9. The connected anti-slip structure for cable clamps of suspension bridges according to claim 1, characterized in that, The cross-sectional area of ​​the anti-slip cable (2) is 0.5T×cosα / f t ; Where T is the force borne by the boom (16); α is the angle between the suspender (16) and the main cable; f t The design value of the tensile strength of the material of the anti-slip cable (2) is given.

10. The installation method for the connected anti-slip structure of the cable clamp for suspension bridges according to claim 6, characterized in that, Includes the following steps: Step 1: Hoist the main cable saddle (3) to the top of the bridge tower. During the installation of the main cable saddle (3) at the top of the tower, push the main cable saddle (3) to the required position using a reaction frame. Then install the main cable in sequence and arrange the strands (33) of the main cable in the cable receiving groove (31) in a regular manner. Step 2: Install each of the cable clamps (1) in sequence, and connect the upper half (11) and the corresponding lower half (12) of each cable clamp (1) with multiple high-strength bolts (15) to clamp the main cable; Step 3: Install all the suspenders (16) in sequence and tension them to the design load. During the process, push the reaction frame to drive the main cable saddle (3) so that the main cable reaches the required extension trajectory. Step 4: Pass the cable body (21) through the cable receiving groove (31) and place it in the bending sheath (35). Connect the two ends of the cable body (21) to the corresponding cable clamps (1) through pins (5). Step 5: Adjust the tension nuts (25) at both ends of the cable body (21) to reduce the distance between the corresponding connecting rod (24) and the fork lug (26), so that the cable body (21) is in a taut state when the bridge is completed. The preload of the cable body (21) is 0.1 times the cable force design value. Step 6: Install all zinc blocks (34) and all the saddle wall tie rods (32) to secure the cable body (21) in the cable tray (31); Step 7: Install the vibration-damping elastic connector (4). For each vibration-damping elastic connector (4), the two halves of the clamps connected by the two half-side clamps (41) are respectively clamped onto the corresponding main cable and the corresponding anti-slip cable (2), and then tightened by screwing in the corresponding clamp bolts (42).

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