Single-side bidirectional cable saddle anti-slip structure for steel strand inhaul cable of cable-stayed bridge

Abstract

A cable-stayed bridge steel strand inhaul cable single-side two-way cable saddle anti-slip structure comprises a cable saddle and is characterized in that the cable saddle is a bundling cable saddle (1) formed by arranging and fixing a plurality of cable penetrating structures according to a certain rule, a steel strand penetrating channel is formed in each cable penetrating structure, anti-slip pressing plates (4) are fixedly arranged at the two ends of the bundling cable saddle (1) respectively, and the anti-slip pressing plates (4) are connected with the bundling cable saddle (1). One end of the anti-slip pressing plate (4) is provided with counter bores (5) corresponding to the steel strand penetrating channels, anti-slip sleeves (7) are installed in the counter bores (5), and anti-slip keys (6) anchored or clamped on the steel strands (9) are installed at one ends of the anti-slip sleeves (7). Any steel strand can be conveniently adjusted and replaced in a single mode, and installation and maintenance are convenient.

Description

Technical Field

[0001] The present application relates to a slip - stopping structure for steel strand cables, particularly to a unilateral two - way saddle slip - stopping structure for steel strand cables of cable - stayed bridges, belonging to the technical field of bridge engineering. Background Art

[0002] The cables of various types of low - tower cable - stayed bridges are all supported by saddles on the towers. In actual engineering, it is necessary to impose necessary constraints on the cables to prevent the cables from slipping to one side due to uneven force. The existing saddle slip - stopping structures have poor stability of anti - slip performance, cannot well meet the two - way slip - stopping requirements, and the cable - changing process is cumbersome during the later use and maintenance, and it is not convenient to adjust and replace a single steel strand. In addition, the existing anti - slip and anchoring structures of cable - stayed bridge saddles are large in volume and heavy in weight, which are not convenient for installation at high altitudes. There has always been a lack of a structure with reasonable structure, convenient installation and maintenance, and good unilateral two - way slip - stopping function to effectively solve this technical problem. Summary of the Invention

[0003] The purpose of the present application is to address the defects and deficiencies of the traditional slip - stopping structure of cable - stayed bridge saddles, such as poor stability, inability to well meet the two - way slip - stopping requirements, and inconvenience in single - strand adjustment and replacement of any steel strand. The present application provides a unilateral two - way saddle slip - stopping structure for steel strand cables of cable - stayed bridges with reasonable structure, good unilateral two - way slip - stopping function, capable of conveniently performing single - strand adjustment and replacement of any steel strand, and convenient for installation and maintenance.

[0004] To achieve the purpose of the above - mentioned application, the technical solution of the present application is: a unilateral two - way saddle slip - stopping structure for steel strand cables of cable - stayed bridges, including a saddle. The saddle is a bundled saddle formed by fixing a plurality of cable - passing structures arranged according to a certain rule. Each cable - passing structure is provided with a steel strand passing channel. Anti - slip pressing plates are fixedly arranged at both ends of the bundled saddle. One end of the anti - slip pressing plate is provided with counterbores corresponding to each steel strand passing channel, and anti - slip sleeves are installed in the counterbores. Anti - slip keys are installed between the inner wall of the anti - slip sleeve and the steel strand.

[0005] Further, the cable - passing structure is a circular arc - shaped steel pipe, and multiple circular arc - shaped steel pipes are arranged according to a certain rule and welded into a bundle.

[0006] Further, the anti - slip sleeve is a cylindrical structure with an external thread on its outer circumferential surface. A step is provided at the outer end of the anti - slip sleeve. The outer diameter of the anti - slip sleeve is larger than the outer diameter of the anti - slip key, and the inner diameter of the anti - slip sleeve is smaller than the outer diameter of the anti - slip key.

[0007] Further, the anti - slip key is a cylindrical structure, and the outer surface of the anti - slip key is set to be smooth or non - smooth.

[0008] Further, the circumferential surface of the step is provided with a friction texture structure.

[0009] Further, an anti-slip key is anchored or clamped on the outer surface of the steel strand, and one anti-slip key is provided on each steel strand.

[0010] Further, the steel strand is a smooth steel strand, a galvanized steel strand, a single-wire epoxy-coated steel strand, a thick epoxy-coated steel strand, a galvanized and epoxy-coated composite steel strand or a non-bonded steel strand.

[0011] The beneficial effects of this application are as follows:

[0012] 1. The bundled cable saddle structure formed by welding and fixing multiple arc-shaped steel pipes in a certain pattern in this application has a relatively light structure weight, is convenient for installation and maintenance, and is convenient for high-altitude operations. It has better flexibility in use and installation convenience than the traditional fixed cable saddle structure.

[0013] 2. This application adopts an anti-slip structure composed of an anti-slip pressure plate, an anti-slip key, an anti-slip sleeve, etc., which has a good one-way and two-way anti-slip function, can prevent the two-way slip of the stay cable, and can conveniently perform single-strand cable adjustment and cable replacement on any steel strand. It is convenient for installation and maintenance and has good prospects for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the first embodiment of this application.

[0015] Figure 2 is a schematic structural diagram of the second embodiment of this application.

[0016] Figure 3 is a partial cross-sectional view of the anti-slip pressure plate of this application.

[0017] Figure 4 is a front structural schematic diagram of the anti-slip pressure plate of this application.

[0018] Figure 5 is a structural schematic diagram of the anti-slip sleeve of this application.

[0019] Figure 6 is a structural schematic diagram when the anti-slip key is installed on the steel strand of this application.

[0020] Figure 7 is a structural schematic diagram of the arc-shaped steel pipe of this application.

[0021] In the figure: bundled cable saddle 1, cable saddle steel backing plate 2, arc-shaped steel pipe 3, anti-slip pressure plate 4, counterbore 5, anti-slip key 6, anti-slip sleeve 7, step 8, steel strand 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Refer to Figures 1 to 7 , a single-sided two-way saddle anti-slip structure for the steel strand cables of a cable-stayed bridge of the present application, including a saddle, characterized in that: the saddle is a bundled saddle 1 formed by fixing a plurality of cable-passing structures arranged according to a certain rule, and each cable-passing structure is provided with a steel strand passing channel. Anti-slip pressing plates 4 are fixedly arranged at both ends of the bundled saddle 1. A counterbore 5 corresponding to each steel strand passing channel is opened at one end of the anti-slip pressing plate 4. An anti-slip sleeve 7 is installed in the counterbore 5, and an anti-slip key 6 is installed between the inner wall of the anti-slip sleeve 7 and the steel strand 9.

[0024] The cable-passing structure is a circular arc-shaped steel pipe 3, and a plurality of circular arc-shaped steel pipes 3 are arranged and welded into a bundle according to a certain rule.

[0025] The anti-slip sleeve 7 is a cylindrical structure with an external thread on its outer circumferential surface. A step 8 is provided at the outer end of the anti-slip sleeve 7. The outer diameter of the anti-slip sleeve 7 is larger than the outer diameter of the anti-slip key 6, and the inner diameter of the anti-slip sleeve 7 is smaller than the outer diameter of the anti-slip key 6.

[0026] The anti-slip key 6 is a cylindrical structure, and the outer surface of the anti-slip key 6 is set to be smooth or non-smooth.

[0027] The circumferential surface of the step 8 is provided with a friction texture structure.

[0028] The anti-slip key 6 is anchored or clamped on the outer surface of the steel strand 9, and one anti-slip key 6 is provided on each steel strand 9.

[0029] The steel strand 9 is a smooth steel strand, galvanized steel strand, single-wire epoxy-coated, thick epoxy-coated steel strand, galvanized and epoxy-coated composite steel strand or unbonded steel strand.

[0030] Refer to the accompanying drawings of the specification. The present application adopts a bundled saddle structure formed by welding and fixing a plurality of circular arc-shaped steel pipes 3 into a bundle according to a certain rule. Each circular arc-shaped steel pipe 3 respectively passes through the steel strand 9 and is anchored, which can conveniently perform single-strand cable adjustment and cable replacement on any steel strand. And a single-sided two-way anti-slip anchoring structure is adopted, achieving a good single-sided two-way anti-slip anchoring effect. The structure is light in weight, convenient for installation and maintenance, and is convenient for high-altitude operation. The specific structure and principle are as follows:

[0031] This application adopts a bundled cable saddle structure, which is fixed by arranging multiple cable-passing structures according to a certain rule. Each cable-passing structure is provided with a steel strand passing channel, and a certain number of cable-passing structures can be connected and fixed according to the on-site situation. The cable-passing structure can adopt an arc-shaped steel pipe 3, and multiple arc-shaped steel pipes 3 are arranged and welded into a bundle according to a certain rule, thereby forming a bundled cable saddle 1. Compared with the traditional fixed cable saddle structure, the bundled cable saddle structure of this application has better flexibility in use and convenience in installation.

[0032] Anti-slip pressing plates 4 are fixedly arranged at both ends of the bundled cable saddle 1 respectively. Counterbores 5 corresponding to each steel strand passing channel are formed on the anti-slip pressing plates 4. The number and spacing of all the counterbores 5 correspond to the outer end holes of the arc-shaped steel pipes 3 on the bundled cable saddle 1. The inner hole diameter of the small hole on the inner side of the counterbore 5 is the same as and communicates with the outer end hole diameter of the arc-shaped steel pipe 3. The length of the large hole of the counterbore 5 is longer, and internal threads are formed on the annular inner wall of the large hole. An anti-slip sleeve 7 is installed in the counterbore 5. The anti-slip sleeve 7 is a cylindrical structure with an external thread on its outer circumferential surface. The external thread of the anti-slip sleeve 7 is matched with the internal thread in the large hole of the counterbore 5 to form a thread pair.

[0033] Anti-slip keys 6 are anchored or clamped on the outer surface of the steel strand 9. One anti-slip key 6 is arranged on each steel strand 9, and the anti-slip key 6 is anchored on the steel strand 9. The anti-slip key 6 can adopt a cylindrical structure or a cylindrical structure with an opening on the side wall. The outer surface of the anti-slip key 6 is set as a smooth surface or a non-smooth surface. The steel strand 9 adopts a smooth steel strand, a galvanized steel strand, a single-wire epoxy-coated steel strand, a thick epoxy-coated steel strand, a galvanized and epoxy-coated composite steel strand or an unbonded steel strand.

[0034] The above content is a further detailed description of this application in combination with specific implementation manners. It cannot be considered that the specific implementation of this application is only limited to these descriptions. For those of ordinary skill in the technical field to which this application belongs, without departing from the concept of this application, this application will also have various simple replacements, improvements and changes. All the simple replacements, improvements and changes made should be regarded as belonging to the protection scope of this application.

Claims

1. A single-sided two-way saddle anti-slip structure for the steel strand cable of a cable-stayed bridge, including a saddle, characterized in that: The saddle is a bundled saddle (1) formed by fixing a plurality of cable-passing structures arranged according to a certain rule. Each cable-passing structure is provided with a steel strand passing channel. Anti-slip pressing plates (4) are fixedly arranged at both ends of the bundled saddle (1). A counterbore (5) corresponding to each steel strand passing channel is formed at one end of the anti-slip pressing plate (4). An anti-slip sleeve (7) is installed in the counterbore (5). An anti-slip key (6) is installed between the inner wall of the anti-slip sleeve (7) and the steel strand (9).

2. The single-sided two-way cable saddle anti-slip structure for the steel strand cable of a cable-stayed bridge according to claim 1, wherein: The cable-passing structure is an arc-shaped steel pipe (3), and a plurality of arc-shaped steel pipes (3) are arranged according to a certain rule and welded into a bundle.

3. A single-sided two-way cable saddle anti-slip structure for the steel strand cable of a cable-stayed bridge according to claim 1, characterized in that: The anti-slip sleeve (7) is a cylindrical structure with an external thread on the outer circumferential surface. A step (8) is arranged at the outer end of the anti-slip sleeve (7). The outer diameter of the anti-slip sleeve (7) is larger than the outer diameter of the anti-slip key (6), and the inner diameter of the anti-slip sleeve (7) is smaller than the outer diameter of the anti-slip key (6).

4. A single-sided two-way cable saddle anti-slip structure for stay cables of a cable-stayed bridge made of steel stranded wires according to claim 1, characterized in that: The anti-slip key (6) is a cylindrical structure, and the outer surface of the anti-slip key (6) is a smooth surface or a non-smooth surface.

5. The unilateral two-way saddle anti-slip structure for the steel strand cable of a cable-stayed bridge according to claim 3, characterized in that: The circumferential surface of the step (8) is provided with a friction texture structure.

6. The anti-slip structure of a single-sided two-way cable saddle for the steel strand cable of a cable-stayed bridge according to claim 1, characterized in that: The anti-slip key (6) is anchored or clamped on the outer surface of the steel strand (9), and one anti-slip key (6) is arranged on each steel strand (9).

7. A single-sided two-way cable saddle anti-slip structure for stay cables of a cable-stayed bridge made of steel stranded wires according to claim 1, characterized in that: The steel strand (9) is a smooth steel strand, a galvanized steel strand, a single-wire epoxy-coated strand, a thick epoxy-coated steel strand, a galvanized and epoxy-coated composite steel strand or a non-bonded steel strand.

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