Integrated main cable saddle suitable for reference cable strand installation

Abstract

The main cable saddle comprises a saddle body, a saddle groove is formed in the saddle body, a reference groove is formed below the saddle groove, and an opening of the reference groove faces upwards and is communicated with the saddle groove. In addition to the main cable, a thin cable strand is independently arranged as a datum cable, and the datum cable is only responsible for providing datum reference and does not participate in the strength calculation of the main cable, so that a small number of steel wires can be selected, the size of the anchor cup is greatly reduced, the operation difficulty of datum cable positioning is reduced, the anchoring mode is simple and reliable, the main cable erection datum is conveniently found out, and the construction efficiency is improved. The main cable erection is more efficient and accurate, and the construction difficulty is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a main cable saddle applicable to the integrated installation of reference cable strands, belonging to the technical field of suspension bridges. Background Art

[0002] In the process of the rapid development of the world economy, suspension bridges in China are becoming more and more popular. The main cable is the main component of a suspension bridge, which bears all the dead loads and live loads of the superstructure of the bridge and is called the "lifeline" of the suspension bridge. The quality of the erection of the main cable strands directly affects the accuracy of the completed bridge and the service life of the suspension bridge, and is a key process in the construction of the suspension bridge. And the "reference cable" is particularly important as the basis and key process for the construction of the main cable to ensure quality and quantity. The "reference cable" is erected first for the main cable, and the "reference cable" is positioned by absolute elevation and used as the reference for the erection of general cable strands. The accuracy of the "reference cable" determines the accuracy of the final alignment of the main cable. The relative elevation difference of the adjustment error of the "reference cable" upstream and downstream should be controlled within the millimeter level. Therefore, strictly controlling the alignment accuracy of the "reference cable" is the key to ensuring the quality of the main cable erection.

[0003] The sag adjustment method for the erection of the main cable refers to that when erecting the main cable, the first cable strand is called the reference cable strand, and the absolute sag method is used to position its height. The other cable strands except the reference cable strand are called general cable strands, and the relative sag method is used to position their heights. During the erection process, after the reference cable is measured and positioned, it is temporarily anchored to the front anchor face of the anchor chamber first, and then anchored to the anchor chamber together after all the main cables are erected, and the process is relatively complicated. Content of the Utility Model

[0004] The purpose of the utility model is to provide a main cable saddle applicable to the integrated installation of reference cable strands, which is convenient to find the reference for the erection of the main cable, makes the erection of the main cable more efficient and accurate, and greatly reduces the construction difficulty.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A main cable saddle applicable to the integrated installation of reference cable strands includes a saddle body. An inner part of the saddle body is provided with a saddle groove, and a reference groove is arranged below the saddle groove. The reference groove has an upward opening and is communicated with the saddle groove.

[0007] Optionally, a plurality of steps are arranged at the bottom of the saddle groove, and the overall arrangement shape of the plurality of steps is "V" - shaped. The width of the reference groove is smaller than the width of the steps, and the reference groove is arranged below the bottom - most step.

[0008] Optionally, a base is arranged on the side - span side of the saddle body, and the position of the base corresponds to the position of the reference groove.

[0009] Optionally, the middle - span side of the base is in contact with the saddle body, and a fixing plate is arranged on the side - span side of the base.

[0010] Optionally, a distance adjusting mechanism is provided between the fixing plate and the base.

[0011] Optionally, the distance adjusting mechanism is a gasket or an adjusting bolt.

[0012] Optionally, a card slot with an upward opening is provided on the fixing plate.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] The main saddle applicable to the integrated installation of the reference cable strand provided by the present utility model separately provides a thinner cable strand as the reference cable outside the main cable. At the same time, the reference cable only serves as a reference and does not participate in the strength calculation of the main cable. Therefore, a small number of steel wires can be selected, greatly reducing the size of the anchor cup, reducing the operation difficulty of positioning the reference cable, and the anchoring method of this solution is simple and reliable, facilitating the finding of the erection reference of the main cable, making the erection of the main cable more efficient and accurate, and greatly reducing the construction difficulty. Description of the Drawings

[0015] Figure 1 is a schematic diagram of a main saddle applicable to the integrated installation of the reference cable strand Figure 1 .

[0016] Figure 2 is a schematic diagram of a main saddle applicable to the integrated installation of the reference cable strand Figure 2 .

[0017] Figure 3 is a cross-sectional view of a main saddle applicable to the integrated installation of the reference cable strand.

[0018] Markings in the figure: 1 - saddle body, 11 - saddle groove, 12 - reference groove, 2 - base, 3 - fixing plate, 4 - distance adjusting mechanism, 5 - reference cable, 6 - anchor cup. Detailed Embodiments

[0019] The present utility model will be described in detail below with reference to the drawings.

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] A main saddle applicable to the integrated installation of the reference cable strand, as Figures 1-3 shown, includes a saddle body 1. An inner part of the saddle body 1 is provided with a saddle groove 11. Below the saddle groove 11 is provided a reference groove 12, and the reference groove 12 has an upward opening and is communicated with the saddle groove 11.

[0022] Specifically, the saddle body 1 serves as the main cable saddle body. The saddle groove 11 is used to support the main cable strands, which is a conventional structure in the main cable saddle and can all adopt existing structures without being elaborated too much in this article. The reference groove 12 is arranged outside the saddle groove 11 and is used to place the reference cable 5. The position of the reference cable 5 is completely different from that of the main cable strands and does not affect or interfere with the overall main cable strands. By separately setting the reference cable 5 in this solution, the construction difficulty can be greatly reduced, the construction efficiency can be improved, and the project progress can be accelerated. Among them, the bottom radian of the reference groove 12 satisfies that the reference cable 5 is tangent to a certain point on the bottom arc surface of the saddle groove 11 when being tensioned and anchored, and satisfies that the reference cable 5 disengages from the main cable strands arranged above it inside the saddle groove 11, that is, the tangent point of the reference cable 5 on the bottom arc surface when being tensioned and anchored is after the tangent point of the upper main cable strands on the bottom arc surface when being erected.

[0023] As another specific embodiment, a plurality of steps are provided at the bottom of the saddle groove 11, and the overall arrangement shape of the plurality of steps is "V"-shaped. The width of the reference groove 12 is smaller than the width of the steps, and the reference groove 12 is arranged below the bottommost step. Specifically, the steps can arrange the main cable strands at the bottom according to the requirements of a hexagon. The reference cable 5 only serves to provide a reference and does not participate in the main cable strength calculation, so a small amount of steel wires can be selected, and the reference groove 12 can also be smaller relative to the step width, which can save costs and reduce weight to reduce the construction difficulty.

[0024] As another specific embodiment, a pedestal 2 is provided on the side span side of the saddle body 1, and the position of the pedestal 2 corresponds to the position of the reference groove 12. By means of the pedestal 2, the angle of the anchor cup 6 can be adjusted to ensure that the center line of the reference cable 5 is perpendicular to the fixing plate 3 after the reference cable 5 is tensioned and anchored, so as to satisfy that the reference cable 5 is more evenly stressed after being tensioned and anchored.

[0025] As another specific embodiment, the middle span side of the pedestal 2 is in contact with the saddle body 1, and a fixing plate 3 is arranged on the side span side of the pedestal 2. Specifically, the contact surfaces of the two pedestals 2 and the fixing plate 3 are an inclined surface with an angle, and the fixing plate 3 is connected to the pedestal 2 by bolts.

[0026] As another specific embodiment, a distance adjusting mechanism 4 is provided between the fixing plate 3 and the pedestal 2. By means of the distance adjusting mechanism 4, the distance between the fixing plate 3 and the pedestal 2 can be adjusted, and then the surplus length of the reference cable 5 can be adapted so that the reference groove 12 can just be anchored.

[0027] As another specific embodiment, the distance adjusting mechanism 4 is a gasket or an adjusting bolt. It can accurately and conveniently control the adjustment of the gap. In specific implementation, other methods can also be adopted for adjustment.

[0028] As another specific embodiment, a card slot with an upward opening is provided on the fixing plate 3. The card slot can be used to clamp and fix the anchor cup 6.

[0029] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. The present invention extends to any new feature or any new combination disclosed in this specification, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall all be included within the protection scope of the present invention.

[0030] In the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

Claims

1. A main cable saddle suitable for the integrated installation of reference cable strands, characterized in that: The saddle comprises a saddle body (1), wherein a saddle groove (11) is provided inside the saddle body (1), a reference groove (12) is provided below the saddle groove (11), and the reference groove (12) opens upward and communicates with the saddle groove (11).

2. The main cable saddle suitable for integrated installation of reference cable strands according to claim 1, characterized in that: A plurality of steps are arranged at the bottom of the saddle groove (11), and the overall arrangement shape of the plurality of steps is a "V" shape. The width of the reference groove (12) is smaller than the width of the steps, and the reference groove (12) is arranged below the bottommost step.

3. The main cable saddle suitable for integrated installation of reference cables according to claim 1, characterized in that: A base (2) is provided on the side span of the saddle body (1), and the position of the base (2) corresponds to the position of the reference groove (12).

4. The main cable saddle suitable for integrated installation of reference cable strands according to claim 3, characterized in that: The mid-span side of the base (2) contacts the saddle body (1), and a fixing plate (3) is provided on the side-span side of the base (2).

5. The main cable saddle suitable for integrated installation of reference cable strands according to claim 4, characterized in that: A distance adjustment mechanism (4) is provided between the fixing plate (3) and the base (2).

6. The main cable saddle suitable for integrated installation of reference cable strands according to claim 5, characterized in that: The distance adjustment mechanism (4) is a gasket or an adjustment bolt.

7. The main cable saddle suitable for integrated installation of reference cable strands according to claim 4, characterized in that: The fixing plate (3) is provided with a card slot opening upward.

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