Main cable saddle for space cable suspension bridge

Abstract

The utility model relates to the technical field of suspension bridges, in particular to a main cable saddle for a space cable suspension bridge, which comprises a saddle body, a left saddle head and a right saddle head, the first saddle groove width center line of the left saddle head and the second saddle groove width center line of the right saddle head form an acute angle matching relation at the extending position of the upper end. The saddle body is provided with a left side bottom plate and a right side bottom plate which are matched in an obtuse angle relation; the left longitudinal main rib is perpendicular to the left bottom plate, and the thickness center of the left longitudinal main rib corresponds to the saddle groove width center of the left saddle head; the right longitudinal main rib is perpendicular to the right bottom plate, and the thickness center of the right longitudinal main rib corresponds to the width center of the saddle groove of the right saddle head. The main cable saddle has the technical characteristics of compact structure, relatively clear stress system and excellent stress stability, and is favorable for reducing the design technical difficulty of the main cable saddle and the suspension bridge.

Description

Technical Field

[0001] This utility model relates to the field of suspension bridge technology, specifically a main cable saddle for a space cable suspension bridge. Background Technology

[0002] In addition to the parabolic turning and erection of the main cable in the vertical direction (i.e., the height direction of the suspension bridge - vertical bridge upward), the space cable suspension bridge also needs to be erected with a certain amount of arc-shaped offset in the horizontal direction (i.e., the width direction of the suspension bridge - horizontal bridge upward). This makes the two main cables supported and turned by the main tower non-parallel and correspond to each other. The direction of each main cable on the suspension bridge is arranged in three dimensions: length, height and width.

[0003] The main cable saddle is a crucial load-bearing component of the main tower that supports and steers the main cable. Due to the unique arrangement of the main cable in the length, height, and width dimensions of the spatial cable suspension bridge, the main cable saddle needs to guide and steer the main cable in these three dimensions. This requires the saddle groove on the saddle head to guide the main cable in the length direction (longitudinal direction), steer it in the height direction (vertical direction), and steer it in the width direction (transverse direction).

[0004] Based on this, the applicant has previously developed and disclosed various structural forms of main cable saddles suitable for spatial cable suspension bridges.

[0005] For example, Chinese patent documents disclose technologies such as "A Main Cable Saddle for a Space Cable Suspension Bridge" (publication number CN210066490 U, publication date February 14, 2020) and "A Main Cable Saddle for a Space Cable" (publication number CN220538404 U, publication date February 27, 2024). These technologies involve arranging two saddle heads horizontally on the same saddle body in the transverse direction of the suspension bridge. The center lines of the saddle groove widths of the two saddle heads form an acute angle at their upper extensions, sharing a flat base plate on the same saddle body. The extension of the center line of the saddle groove width of each saddle head is not perpendicular to the base plate. However, these technologies present two challenges: firstly, the force-bearing system is complex, increasing the design difficulty of the main cable saddle and the suspension bridge; secondly, the arrangement of the two saddle heads on the same saddle body requires significant space, hindering the overall structural compactness.

[0006] For example, there is a technology published in Chinese patent literature entitled "Saddle for Spatial Cable Suspension Bridge," publication number CN204151677 U, publication date February 11, 2015. This type of technology arranges two two-dimensional saddle slots (i.e., conventional main cable saddles) at an angle on the top of the main tower, so that the saddle slots of each saddle form a function of bearing the force at the bottom and forming a three-dimensional arrangement and steering of the main cable. However, this type of technology has two drawbacks: firstly, the structure is dispersed, and the space requirements for the cable saddle arrangement on the main tower are large; secondly, the two main cable saddles form a relatively independent force-bearing system on the main tower, making it impossible to balance the forces on each other, resulting in a relatively limited load-bearing capacity and poor force stability. It requires a complex suspension bridge force system design to balance this, increasing the design technical difficulty of the suspension bridge. Utility Model Content

[0007] The technical objective of this utility model is to provide a main cable saddle for a space cable suspension bridge that is compact in structure, has a relatively clear force system, and exhibits excellent force stability, taking into account the special characteristics of the aforementioned space cable suspension bridge and the shortcomings of existing technologies.

[0008] The technical objective of this utility model is achieved through the following technical solution: a main cable saddle for a spatial cable suspension bridge, comprising a saddle body and a left saddle head and a right saddle head arranged on the saddle body in the left and right positions corresponding to the transverse direction of the suspension bridge.

[0009] The center line of the saddle groove width of the left saddle head and the center line of the saddle groove width of the right saddle head form an acute angle fit at the upper extension.

[0010] The saddle body has a left bottom plate and a right bottom plate that fit together at an obtuse angle;

[0011] The left base plate has a left longitudinal main rib that is perpendicular to the left base plate and whose thickness center corresponds to the center of the saddle groove width of the left saddle head. The left longitudinal main rib is arranged along the length direction of the left saddle head.

[0012] The right-side base plate has a right longitudinal main rib that is perpendicular to the right-side base plate and whose thickness center corresponds to the center of the saddle groove width of the right-side saddle head. The right longitudinal main rib is arranged along the length direction of the right-side saddle head.

[0013] The aforementioned technical measures, addressing the unique characteristics of the spatial cable suspension bridge, involve two base plates on the same saddle body with two saddle heads arranged in a folded fit. Each saddle head is perpendicularly fitted to its corresponding base plate via a corresponding main reinforcement bar, thus simplifying and clarifying the force distribution within the suspension bridge system. Furthermore, the two saddle heads are arranged with an inclined structure on the same saddle body, and their force directions are perpendicularly matched with the corresponding base plates. This ensures a relatively clear and balanced force distribution between the two saddle heads within the suspension bridge system, which is beneficial for increasing load-bearing capacity, reliably improving stress stability, and promoting a compact overall structural layout. Therefore, the main cable saddle with these technical measures possesses the characteristics of a compact structure, a relatively clear stress system, and excellent stress stability, which helps reduce the design and technical difficulty of the main cable saddle and the suspension bridge.

[0014] As one of the preferred technical solutions, the saddle body is a welded steel plate structure;

[0015] The saddle body has multiple transverse stiffener plates arranged on the left and right sides of the left longitudinal main reinforcement corresponding to the transverse direction of the suspension bridge, and multiple transverse stiffener plates arranged on the right longitudinal main reinforcement corresponding to the transverse direction of the suspension bridge. Each transverse stiffener plate is arranged along the width direction of the corresponding saddle head. Each transverse stiffener plate is perpendicular to the corresponding main reinforcement and the bottom plate. Furthermore, each transverse stiffener plate at the right longitudinal main reinforcement and each transverse stiffener plate at the left longitudinal main reinforcement are in a one-to-one correspondence.

[0016] In the one-to-one correspondence, the transverse stiffening plate on the left side of the right longitudinal main reinforcement and the transverse stiffening plate on the right side of the left longitudinal main reinforcement are a whole plate structure.

[0017] Alternatively, the saddle body may be a welded steel plate structure;

[0018] The saddle body has multiple transverse stiffener plates arranged on the left and right sides of the left longitudinal main reinforcement corresponding to the transverse direction of the suspension bridge, and multiple transverse stiffener plates arranged on the right longitudinal main reinforcement corresponding to the transverse direction of the suspension bridge. Each transverse stiffener plate is arranged along the width direction of the corresponding saddle head. Each transverse stiffener plate is perpendicular to the corresponding main reinforcement and the bottom plate. Furthermore, each transverse stiffener plate at the right longitudinal main reinforcement and each transverse stiffener plate at the left longitudinal main reinforcement are in a one-to-one correspondence.

[0019] In the one-to-one correspondence relationship, the transverse stiffening plate on the left side of the right longitudinal main reinforcement and the transverse stiffening plate on the right side of the left longitudinal main reinforcement are separate combined connection structures.

[0020] The split-assembly connection structure has a transition plate on the front and rear sides of the longitudinal section of the suspension bridge corresponding to the transverse stiffeners arranged in the corresponding mating relationship. The transition plate is offset to cover the butt joint of the transverse stiffeners in the corresponding mating relationship. The transition plate is connected to the transverse stiffeners in the corresponding mating relationship by a number of locking bolts.

[0021] The saddle body of the above-mentioned technical measures has good overall integrity while arranging two saddle heads. This is especially prominent in the whole plate structure of the transverse stiffening plate on the left side of the right longitudinal main reinforcement and the transverse stiffening plate on the right side of the left longitudinal main reinforcement. This can reliably balance the forces in the suspension bridge system, which is conducive to improving the load and stability of the load, and also conducive to the compactness of the overall structural arrangement.

[0022] Furthermore, the saddle body has multiple flat reinforcing plates arranged on both sides of the left longitudinal main reinforcement corresponding to the height direction of the main cable saddle, and multiple flat reinforcing plates arranged on both sides of the right longitudinal main reinforcement corresponding to the height direction of the main cable saddle. Each flat reinforcing plate is arranged along the width direction of the corresponding saddle head and is parallel to the corresponding bottom plate. Each flat reinforcing plate is perpendicular to the corresponding main reinforcement and transverse reinforcement plate. This technical measure can reliably improve the structural rigidity at the corresponding main reinforcement, thereby effectively improving the stress stability of the entire saddle body.

[0023] As one of the preferred technical solutions, the left and right base plates of the saddle body are integrally formed by a full-penetration weld at the corner joint. This technical measure enables the two base plates of the saddle body, which are fitted at an angle, to form an integral structure after completion, thereby ensuring the rigidity of the entire saddle body structure and effectively improving the stress stability of the entire saddle body.

[0024] As one of the preferred technical solutions, an upper support plate that matches the left grille assembly is connected to the bottom of the left side base plate of the saddle body;

[0025] At the bottom of the right side base plate of the saddle body, there is an upper support plate that matches the right side grille assembly;

[0026] The upper support plate and pushing friction structure at the bottom of the left base plate and the upper support plate and pushing friction structure at the bottom of the right base plate are formed as independent structures.

[0027] The above-mentioned technical measures are designed to adapt to the pre-deflection jacking construction when the main cable saddle is installed on the main tower. While meeting the technical requirements of pre-deflection jacking construction, they can effectively reduce the technical difficulty and facilitate the forming process.

[0028] Furthermore, the left-side grid assembly that mates with the left-side base plate of the saddle body and the right-side grid assembly that mates with the right-side base plate of the saddle body are independent structures. This technical measure addresses the unique characteristic of the main cable saddle being installed on the main tower, where the grid assembly serves as the load-bearing foundation. By molding the grid assemblies that mate with the two base plates into separate structures, it is not only easier to manufacture but also easier to transport and construct.

[0029] As one of the preferred technical solutions, the acute angle formed at the upper extension of the center line of the saddle groove width of the left saddle head (first line) and the center line of the saddle groove width of the right saddle head (second line) is ≤45°. This technical measure, while meeting the technical requirements for the erection of the space cable (of course, the specific angle needs to be determined within this limitation range in conjunction with the design of the space cable suspension bridge), can avoid the main cable saddle from forming an excessive horizontal component force in the transverse direction of the bridge, thereby effectively reducing the technical requirements for the stress performance of the saddle body and ensuring that the saddle body is reliably and stably stressed.

[0030] A method for constructing the installation foundation of the aforementioned main cable saddle, the method comprising the following technological steps:

[0031] S1. Construct the main tower according to the construction design;

[0032] According to the design structure of the main cable saddle, the left and right grid assemblies, which are structurally independent, are manufactured separately.

[0033] At the bottom of the left-side grille assembly, there are multiple sets of support legs that position and support the left-side grille assembly at a designed tilt angle in the direction of the suspension bridge cross bridge, and the bottom surfaces of each set of support legs are in parallel relationship.

[0034] At the bottom of the right-side grille assembly, there are multiple sets of support legs that position and support the right-side grille assembly at a designed tilt angle in the direction of the suspension bridge cross bridge, and the bottom surfaces of each set of support legs are in parallel relationship.

[0035] An angle-fixing device is manufactured, which has two fixing surfaces that match the mating angle between the left and right bottom plates of the main cable saddle, and a positioning pin mounting structure and a bolt mounting structure are provided on each fixing surface.

[0036] S2. A recessed grid cavity is pre-reserved on the main tower under construction;

[0037] The pre-embedded cavity of the grid is located on the left bottom surface of the suspension bridge in the transverse direction. Multiple sets of left grid positioning pads are pre-embedded in a high-low position matching relationship. The arrangement of each set of left grid positioning pads corresponds to each set of support feet at the bottom of the left grid assembly. The top surfaces of each set of left grid positioning pads are matched in a parallel relationship.

[0038] The pre-embedded cavity of the grid is located on the right bottom surface of the suspension bridge in the transverse direction. Multiple sets of right grid positioning pads are pre-embedded in a high-low position matching relationship. The arrangement position of each set of right grid positioning pads corresponds to each set of support feet at the bottom of the right grid assembly. The top surfaces of each set of right grid positioning pads are matched in a parallel relationship.

[0039] The connecting surfaces formed by the positioning points of the left-side grid positioning pads in the transverse bridge direction and the connecting surfaces formed by the positioning points of the right-side grid positioning pads in the transverse bridge direction form an obtuse angle fit relationship, and the fit angle of this fit relationship corresponds to the fit angle between the left and right bottom plates of the main cable saddle.

[0040] S3. Hoist the left grid assembly from step S1 to the left area of ​​the grid pre-embedded cavity in step S2, so that each set of support legs of the left grid assembly sits on the corresponding left grid positioning pad in the left area of ​​the grid pre-embedded cavity in a planar fit relationship.

[0041] The right grid assembly in step S1 is hoisted to the right side area of ​​the grid pre-embedded cavity in step S2, so that each set of support legs of the right grid assembly is placed on the corresponding right grid positioning pad in the right side area of ​​the grid pre-embedded cavity in a planar fit relationship.

[0042] The positioned right and left grid assemblies form a V-shaped support surface that can cover the left and right bottom plates of the main cable saddle.

[0043] S4. The angle shaping device in step S1 is connected between the top surface of the left grid assembly and the top surface of the right grid assembly in step S3 by means of a combination of a positioning pin and a locking bolt, so that the two shaping surfaces of the angle shaping device form surface contact fits with the top surfaces of the left grid assembly and the right grid assembly respectively.

[0044] S5. Pour concrete into the pre-embedded cavity of the grid;

[0045] The solidified concrete anchors the left and right grid components within the pre-embedded cavity of the grid.

[0046] S6. Remove the angle-setting device from the already anchored left and right grid assemblies;

[0047] S7. Install structures on the left and right grid assemblies respectively to facilitate the main cable saddle jacking construction.

[0048] Complete the foundation construction for installation.

[0049] The aforementioned installation foundation construction method, specifically for the main cable saddle with an angled base plate, enables two relatively independent, specific structural grid components to achieve stable inclined positioning support through corresponding grid positioning pads on the main tower. Under the action of the angle-setting device, these components precisely fit the main cable saddle base plate structure, achieving reliable anchoring within the main tower's concrete structure. It is evident that this installation foundation construction method, considering the unique structure of the main cable saddle for the space cable, facilitates the precise shaping of the grid components on the main tower, which are irregularly shaped components, enabling a reliable fit with the main cable saddle structure to meet the requirements of pre-tilting and stable support for the main cable saddle.

[0050] Furthermore, the grid pre-embedded cavity in step S2 has a left bottom surface and a right bottom surface of the cavity that fit together at an obtuse angle in the transverse direction of the suspension bridge, and the fitting angle between the left bottom surface and the right bottom surface of the cavity corresponds to the fitting angle between the left bottom plate and the right bottom plate of the main cable saddle.

[0051] The positioning pads of each set of left-side grids arranged upwards on the cross section of the suspension bridge are pre-embedded on the bottom surface of the left side of the cavity in a high-low matching relationship;

[0052] The positioning pads of each set of right-side grids arranged upwards on the cross-section of the suspension bridge are pre-embedded on the bottom right side of the cavity in a high-low matching relationship.

[0053] The aforementioned technical measures involve pre-embedded cavities in the grid, forming a cavity bottom surface that essentially corresponds to the bottom plate structure of the main cable saddle. This allows the corresponding grid components to achieve stable positioning and support through the grid positioning pads anchored within them. On the one hand, this effectively ensures that the grid positioning pads are stably formed on the bottom surface of the corresponding cavity. On the other hand, it helps to ensure that the grid positioning pads on the bottom surface of the corresponding cavity are accurately arranged in the transverse direction. This, in turn, ensures that the positioned and supported grid components are arranged at an inclination angle that meets the design requirements, resulting in good adaptability.

[0054] Furthermore, in step S4, the support feet of each set of planar mating relationships and the corresponding grid positioning pads are temporarily fixed together by spot welding and / or bolt connection. This technical measure enables the grid assembly to form a stable positioning support on the corresponding grid positioning pad, improving the safety of grid assembly pre-assembly.

[0055] The beneficial technical effects of this utility model are as follows: The main cable saddle of the above-mentioned technical measures, taking into account the special characteristics of the aforementioned spatial cable suspension bridge, consists of two base plates on the same saddle body with two saddle heads arranged in an angled fit. Each saddle head is perpendicularly fitted to its corresponding base plate via a corresponding main reinforcement bar, thus making its force distribution within the suspension bridge system simple and clear. Furthermore, the two saddle heads are arranged on the same saddle body with an inclined structure, and their force directions are perpendicularly matched with the corresponding base plates. This results in a relatively clear balance of forces between the two saddle heads within the suspension bridge system, which is beneficial for increasing load-bearing capacity, reliably improving stress stability, and also contributing to a more compact overall structural arrangement. Attached Figure Description

[0056] Figure 1 This is a structural schematic diagram of the main cable saddle of this utility model.

[0057] Figure 2 This is a schematic diagram of the pre-embedded cavity of the grid on the main tower during the foundation construction process for the main cable saddle installation.

[0058] Figure 3 This is a schematic diagram of the structure in which the left-side grid assembly is supported within the pre-embedded cavity of the grid during the foundation construction of the main cable saddle installation.

[0059] Figure 4 This is a schematic diagram showing the structure in which the left and right grid components are supported within the pre-embedded cavity of the grid during the foundation construction of the main cable saddle installation.

[0060] Figure 5 This is a schematic diagram of the angle-setting device used to set the angles of the left and right grid components during the foundation construction of the main cable saddle installation.

[0061] Figure 6 This is a schematic diagram showing the structure of the left and right grid components anchored in the pre-embedded cavity of the grid during the foundation construction of the main cable saddle installation.

[0062] Figure 7 for Figure 1 The main cable saddle shown Figure 6 The diagram shows the structural arrangement of the grille assembly.

[0063] Meaning of the codes in the image:

[0064] 1—Saddle body; 11—Left longitudinal main reinforcement; 12—Right longitudinal main reinforcement; 13—Left bottom plate; 14—Right bottom plate; 15—Transverse reinforcement plate; 16—Horizontal reinforcement plate;

[0065] 2—Left saddle head; 21—Center line of saddle groove width;

[0066] 3—Right saddle head; 31—Second center line of saddle groove width;

[0067] 4—Left side grille assembly; 41—First support foot of the left side grille; 42—Second support foot of the left side grille;

[0068] 5—Right side grille assembly; 51—Right side grille first support leg; 52—Right side grille second support leg;

[0069] 6—Main tower; 61—Grid embedded cavity; 62—Left side grid first positioning pad; 63—Left side grid second positioning pad; 64—Right side grid first positioning pad; 65—Right side grid second positioning pad; 66—Left side bottom surface of cavity; 67—Right side bottom surface of cavity;

[0070] 7—Angle shaping device;

[0071] α—angle 1;

[0072] β—angle two. Detailed Implementation

[0073] This utility model relates to the field of suspension bridge technology, specifically a main cable saddle for a space cable suspension bridge. The main technical solution of this utility model will be described in detail below with reference to several embodiments. Embodiment 1 is illustrated in conjunction with the accompanying drawings—that is… Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The technical solution of this utility model is clearly and thoroughly explained; although other embodiments are not shown in separate drawings, their main structures can still be referred to the drawings of Embodiment 1.

[0074] It should be noted that the accompanying drawings of this utility model are schematic, and unnecessary details have been simplified to clarify the technical purpose of this utility model, so as to avoid obscuring the technical solution contributed by this utility model to the prior art. In addition, the expressions such as "about" and "basically" regarding quantity or fit relationship in the following text mean that reasonable assembly errors and processing errors are allowed in the industry, and do not literally describe absolute quantity or fit relationship.

[0075] Example 1

[0076] See Figure 1 As shown, the cable saddle of this utility model is a main cable saddle for a spatial cable suspension bridge, which includes a saddle body 1 with a welded steel plate structure and two cast saddle heads arranged on the saddle body 1 - a left saddle head 2 and a right saddle head 3.

[0077] Specifically, the saddle body 1 of the steel plate welded structure has at least two longitudinal main stiffening plates (i.e., left longitudinal main stiffening 11 and right longitudinal main stiffening 12), two bottom plates (i.e., left bottom plate 13 and right bottom plate 14), multiple transverse stiffening plates 15, and multiple horizontal stiffening plates 16.

[0078] To accommodate the three-dimensional support of the main cable in the spatial cable suspension bridge, the left saddle head 2 and the right saddle head 3, corresponding to the transverse direction of the suspension bridge, are arranged in a left-right position and welded obliquely to the top area of ​​the saddle body 1. The inclination angles of the left saddle head 2 and the right saddle head 3 on the saddle body 1 meet the following technical requirements: the center line 21 of the saddle groove width of the left saddle head 2 and the center line 31 of the saddle groove width of the right saddle head 3 form an acute angle at their upper extensions, i.e., an included angle α. The value of this included angle α is required to be no more than 45°, that is, the acute angle formed by the center line 21 of the saddle groove width of the left saddle head 2 and the center line 31 of the saddle groove width of the right saddle head 3 at their upper extensions is ≤45°. The specific value depends on the design requirements of the spatial cable suspension bridge, such as 45°, 40°, or 30°.

[0079] In the structural system of a suspension bridge, the force on the main cable supported by the saddle head is mainly concentrated along the center of the saddle groove width. Therefore, to accommodate this force, the left longitudinal main reinforcement 11 of the saddle body 1 is arranged along the center of the saddle groove width of the left saddle head 2, that is, the center of the thickness of the left longitudinal main reinforcement 11 corresponds to the center of the saddle groove width of the left saddle head 2, and the length direction of the left longitudinal main reinforcement 11 is arranged along the length direction of the left saddle head 2. The right longitudinal main reinforcement 12 of the saddle body 1 is arranged along the center of the saddle groove width of the right saddle head 3, that is, the center of the thickness of the right longitudinal main reinforcement 12 corresponds to the center of the saddle groove width of the right saddle head 3, and the length direction of the right longitudinal main reinforcement 12 is arranged along the length direction of the right saddle head 3. Thus, the left longitudinal main rib 11 of the saddle body 1 basically forms the extension of the center line 21 of the saddle groove width of the left saddle head 2, and the right longitudinal main rib 12 of the saddle body 1 basically forms the extension of the center line 31 of the saddle groove width of the right saddle head 3. The left longitudinal main rib 11 and the right longitudinal main rib 12 are arranged at an angle in the welded structure of the saddle body 1, and the two are similar to a figure-eight fit.

[0080] To accommodate the inclined arrangement of the left longitudinal main reinforcement 11 of the saddle body 1 and to ensure a simple and clear load-bearing and force transfer, the left bottom plate 13 of the saddle body 1 is vertically welded to the bottom end of the left longitudinal main reinforcement 11. Similarly, to accommodate the inclined arrangement of the right longitudinal main reinforcement 12 of the saddle body 1 and to ensure a simple and clear load-bearing and force transfer, the right bottom plate 14 of the saddle body 1 is vertically welded to the bottom end of the right longitudinal main reinforcement 12. Thus, the left bottom plate 13 and the right bottom plate 14 of the saddle body 1 are inclined relative to the horizontal direction and are not on the same plane, forming an obtuse angle relationship—that is, forming an included angle β. The value of this included angle β is determined by the value of the included angle α mentioned above.

[0081] As can be seen from the above structure of saddle body 1, saddle body 1 has a left base plate 13 and a right base plate 14 that are fitted at an obtuse angle; the left base plate 13 has a left longitudinal main rib 11 that is perpendicular to the left base plate 13 and whose thickness center corresponds to the center of the saddle groove width of the left saddle head 2; the right base plate 14 has a right longitudinal main rib 12 that is perpendicular to the right base plate 14 and whose thickness center corresponds to the center of the saddle groove width of the right saddle head 3.

[0082] To ensure the stability and rigidity of the saddle body 1 forming structure, multiple transverse stiffening plates 15 are arranged on the left and right sides of the left longitudinal main reinforcement 11, corresponding to the transverse direction of the suspension bridge. Each transverse stiffening plate 15 is arranged vertically along the height direction of the left longitudinal main reinforcement 11, that is, each transverse stiffening plate 15 is arranged in the transverse direction along the width direction of the left saddle head 2. The multiple transverse stiffening plates 15 on each side of the left longitudinal main reinforcement 11 are arranged at intervals along the length direction of the left longitudinal main reinforcement 11. The transverse stiffening plates 15 on both sides of the left longitudinal main reinforcement 11 are in a one-to-one correspondence relationship. In the top view, the left longitudinal main reinforcement 11 and the transverse stiffening plates 15 on the left and right sides are in a cross-shaped correspondence relationship. Similarly, multiple transverse stiffener plates 15 are arranged on the left and right sides of the right longitudinal main reinforcement 12, corresponding to the transverse direction of the suspension bridge. Each transverse stiffener plate 15 is arranged vertically along the height direction of the right longitudinal main reinforcement 12, that is, each transverse stiffener plate 15 is arranged in the transverse direction along the width direction of the right saddle 3. The multiple transverse stiffener plates 15 on each side of the right longitudinal main reinforcement 12 are arranged at intervals along the length direction of the right longitudinal main reinforcement 12. The transverse stiffener plates 15 on both sides of the right longitudinal main reinforcement 12 are in a one-to-one correspondence relationship. In the top view, the right longitudinal main reinforcement 12 and the transverse stiffener plates 15 on the left and right sides are in a cross-shaped correspondence relationship. The transverse stiffening plates 15 at the aforementioned right longitudinal main reinforcement 12 and the transverse stiffening plates 15 at the left longitudinal main reinforcement 11 also have a one-to-one correspondence. In this one-to-one correspondence, the transverse stiffening plates 15 on the left side of the right longitudinal main reinforcement 12 and the transverse stiffening plates 15 on the right side of the left longitudinal main reinforcement 11 are a single plate structure, that is, each transverse stiffening plate 15 between the right longitudinal main reinforcement 12 and the left longitudinal main reinforcement 11 is the same piece. Each transverse stiffening plate 15 in the aforementioned assembled structure is perpendicularly connected to the corresponding main reinforcement and the corresponding base plate, and is welded and fixed.

[0083] To ensure the stability and rigidity of the saddle body 1 forming structure, multiple flat stiffening plates 16 are arranged on the left and right sides of the left longitudinal main stiffening plate 11, corresponding to the height direction of the main cable saddle. Each flat stiffening plate 16 is arranged horizontally (inclined to the theoretical horizontal line) along the width direction of the left saddle head 2 and is parallel to the left bottom plate 13. Adjacent flat stiffening plates 16 on the same side are spaced apart in the height direction. The flat stiffening plates 16 on both sides of the left longitudinal main stiffening plate 11 are in a one-to-one correspondence. In the vertical cross-section direction, the left longitudinal main stiffening plate 11 and the flat stiffening plates 16 on the left and right sides are in a cross-shaped correspondence. Based on the positional interference between the flat stiffening plates 16 and the transverse stiffening plates 15, the flat stiffening plates 16 on the same side of the left longitudinal main stiffening plate 11 are divided into multiple groups in the length direction. Each group corresponds to the gap between the adjacent transverse stiffening plates 15 at the left longitudinal main stiffening plate 11. Similarly, multiple flat stiffening plates 16 are arranged on the left and right sides of the right longitudinal main stiffener 12, corresponding to the height direction of the main cable saddle. Each flat stiffening plate 16 is arranged horizontally (inclined to the theoretical horizontal line) along the width direction of the right saddle head 3 and parallel to the right bottom plate 14. Adjacent flat stiffening plates 16 on the same side are spaced apart in the height direction. The flat stiffening plates 16 on both sides of the right longitudinal main stiffener 12 have a one-to-one corresponding relationship. In the vertical cross-sectional direction, the right longitudinal main stiffener 12 and the flat stiffening plates 16 on the left and right sides have a cross-shaped relationship. Based on the positional interference between the flat stiffening plates 16 and the transverse stiffening plates 15, the flat stiffening plates 16 on the same side of the right longitudinal main stiffener 12 are divided into multiple groups in the length direction. Each group corresponds to the gap between adjacent transverse stiffening plates 15 at the right longitudinal main stiffener 12. Each flat stiffening plate 16 in the aforementioned assembly structure is vertically connected to the corresponding main stiffener and the corresponding transverse stiffening plate 15 and is welded and fixed. In the aforementioned assembly structure, the flat reinforcing plate 16 on the left side of the right longitudinal main reinforcement 12 is disconnected from and relatively independent of the flat reinforcing plate 16 on the right side of the left longitudinal main reinforcement 11.

[0084] Based on the fact that the left and right structures of the saddle body 1 are an inseparable whole, while the left bottom plate 13 and the right bottom plate 14 of the saddle body 1 are composed of two plates and are not a whole, in order to improve the structural rigidity, the left bottom plate 13 and the right bottom plate 14 are formed into a whole by a fusion welding structure at the corner joint.

[0085] At the bottom of the left base plate 13 of the aforementioned saddle body 1, an upper support plate is connected to cooperate with the left grid assembly 4. This upper support plate is connected to a corresponding pushing friction structure—such as a stainless steel plate. At the bottom of the right base plate 14, an upper support plate is connected to cooperate with the right grid assembly 5. This upper support plate is also connected to a corresponding pushing friction structure—such as a stainless steel plate. Based on the angled fit between the left base plate 13 and the right base plate 14, the upper support plate and pushing friction structure at the bottom of the left base plate 13, and the upper support plate and pushing friction structure at the bottom of the right base plate 14, are formed as relatively independent structures.

[0086] like Figure 7As shown, when the main cable saddle of the above structure is installed at the set position of the main tower 6, the left bottom plate 13 of the saddle body 1 has a matching left grid assembly 4, and the right bottom plate 14 of the saddle body 1 has a matching right grid assembly 5. The left grid assembly 4 matching the left bottom plate 13 and the right grid assembly 5 matching the right bottom plate 14 are relatively independent structures.

[0087] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the installation foundation for the main cable saddle on the main tower 6 was constructed according to the following construction steps:

[0088] S1. Construct the main tower 6 according to the construction design;

[0089] According to the design structure of the main cable saddle, the left grid assembly 4 and the right grid assembly 5, which are structurally independent, are manufactured respectively. The structure of the left grid assembly 4 is adapted to the left bottom plate 13 of the main cable saddle, and the structure of the right grid assembly 5 is adapted to the right bottom plate 14 of the main cable saddle.

[0090] The main structure of the left-side grille assembly 4 is no different from that of a conventional grille assembly, except for its bottom. At the bottom of the left-side grille assembly 4, there are multiple sets of wedge-shaped support feet. These support feet are arranged in the longitudinal and transverse directions of the left-side grille assembly 4, respectively, and correspond to the transverse direction of the suspension bridge. The first support foot 41 is located near the outer edge of the bottom of the left-side grille assembly 4, and the second support foot 42 is located near the inner edge of the bottom of the left-side grille assembly 4. The bottom surfaces of the first support foot 41 and the second support foot 42 are basically parallel. In this way, multiple sets of support feet are formed at the bottom of the left-side grille assembly 4, which can position and support the left-side grille assembly 4 at a designed tilt angle in the transverse direction of the suspension bridge.

[0091] Similarly, the main structure of the right-side grille assembly 5 is no different from that of a conventional grille assembly, except for its bottom. At the bottom of the right-side grille assembly 5, there are multiple sets of wedge-shaped support feet. These support feet are arranged in the longitudinal and transverse directions of the right-side grille assembly 5, respectively. Corresponding to the transverse direction of the suspension bridge, the right-side grille assembly 5 has a first support foot 51 near the outer edge and a second support foot 52 near the inner edge. The bottom surfaces of the first support foot 51 and the second support foot 52 are basically parallel. Thus, at the bottom of the right-side grille assembly 5, multiple sets of support feet are formed to position and support the right-side grille assembly 5 at a designed tilt angle in the transverse direction of the suspension bridge.

[0092] An angle-fixing device 7 is manufactured. This angle-fixing device 7 is a rigid structure with two fixing surfaces. The included angle between the two fixing surfaces of the angle-fixing device 7 matches the left bottom plate 13 and the right bottom plate 14 of the main cable saddle. That is, the angle-fixing device 7 has two fixing surfaces that match the matching angle between the left bottom plate 13 and the right bottom plate 14 of the main cable saddle. In order to enable the angle-fixing device 7 to be positioned and connected with the left grid assembly 4 and the right grid assembly 5, a positioning pin insertion structure and a bolt insertion structure are provided on each fixing surface of the angle-fixing device 7.

[0093] S2. On the main tower 6 under construction, a pre-embedded cavity 61 with a recessed grid structure is reserved;

[0094] In order to provide stable support for the anchoring of the grid assembly and facilitate construction operations, the grid pre-embedded cavity 61 has a left bottom surface 66 and a right bottom surface 67 that are fitted together at an obtuse angle in the transverse direction of the suspension bridge. The fitting angle between the left bottom surface 66 and the right bottom surface 67 basically corresponds to the fitting angle between the left bottom plate 13 and the right bottom plate 14 of the main cable saddle. High precision is not required for this fitting angle.

[0095] On the bottom left side surface 66 of the pre-embedded cavity 61 of the grid, multiple sets of wedge-shaped left grid positioning pads are anchored and arranged. The arrangement of these left grid positioning pads corresponds to the arrangement of each set of support feet at the bottom of the left grid assembly 4. Thus, corresponding to the transverse direction of the suspension bridge, two sets of left grid positioning pads are pre-embedded on the bottom left side surface 66 of the cavity in a high-low position relationship - namely, the first left grid positioning pad 62 near the outer side and the second left grid positioning pad 63 near the inner side. The first left grid positioning pad 62 and the second left grid positioning pad 63 are aligned in a parallel relationship on the top surface of the transverse direction of the suspension bridge.

[0096] On the bottom right side surface 67 of the pre-embedded cavity 61 of the grid, multiple sets of wedge-shaped right grid positioning pads are anchored and arranged. The arrangement of these right grid positioning pads corresponds to the arrangement of each set of support feet at the bottom of the right grid assembly 5. Thus, corresponding to the transverse direction of the suspension bridge, two sets of right grid positioning pads are pre-embedded on the bottom right side surface 67 of the cavity in a high-low position relationship - namely, the right grid first positioning pad 64 near the outer side and the right grid second positioning pad 65 near the inner side. The right grid first positioning pad 64 and the right grid second positioning pad 65 are aligned in a parallel relationship on the top surface of the transverse direction of the suspension bridge.

[0097] In the mating structure of the left bottom surface 66 and the right bottom surface 67 of the pre-embedded cavity 61 of the above-mentioned grid, the accuracy of the included angle between the left bottom surface 66 and the right bottom surface 67 of the cavity is not required to be too high, although the higher the better. However, it is required that the connecting surface formed by the left first positioning pad 62 and the left second positioning pad 63 of the left bottom surface 66 of the cavity at the positioning point in the transverse direction of the suspension bridge, and the connecting surface formed by the right first positioning pad 64 and the right second positioning pad 65 of the right bottom surface 67 of the cavity at the positioning point in the transverse direction of the suspension bridge, form an obtuse angle mating relationship. Moreover, the mating angle of this mating relationship should correspond as accurately as possible to the mating angle between the left bottom plate 13 and the right bottom plate 14 of the designed main cable saddle.

[0098] Of course, requiring the anchoring grid positioning pads formed by the bottom surface 66 on the left side of the cavity and the bottom surface 67 on the right side of the cavity to fit precisely with the bottom plate 13 on the left side and the bottom plate 14 on the right side of the main cable saddle will inevitably increase the technical difficulty of construction operations. Therefore, we will not make excessively high technical requirements for the time being.

[0099] S3. Hoist the left grid assembly 4 from step S1 to the left area of ​​the grid pre-embedded cavity 61 in step S2, so that each set of support feet of the left grid assembly 4 is in planar fit relationship and sits on the corresponding left grid positioning pad in the left area of ​​the grid pre-embedded cavity 61. That is, the left grid first support foot 41 at the bottom of the left grid assembly 4 sits on the left grid first positioning pad 62 on the left bottom surface 66 of the cavity, and the left grid second support foot 42 at the bottom of the left grid assembly sits on the left grid second positioning pad 63 on the left bottom surface 66 of the cavity.

[0100] The right grid assembly 5 in step S1 is hoisted to the right area of ​​the grid pre-embedded cavity 61 in step S2, so that each set of support feet of the right grid assembly 5 is located on the corresponding right grid positioning pad in the right area of ​​the grid pre-embedded cavity 61 in a planar fit relationship. That is, the right grid first support foot 51 at the bottom of the right grid assembly 5 is located on the right grid first positioning pad 64 on the right bottom surface 67 of the cavity, and the right grid second support foot 52 at the bottom of the right grid assembly is located on the right grid second positioning pad 65 on the right bottom surface 67 of the cavity.

[0101] The positioned right grid assembly 5 and left grid assembly 4 form a V-shaped support surface that can cover the left bottom plate 13 and right bottom plate 14 of the main cable saddle.

[0102] S4. Hoist the angle shaping device 7 from step S1 to the top corner of the left grid assembly 4 and the right grid assembly 5, so that the two shaping surfaces of the angle shaping device 7 correspond and match the top surfaces of the left grid assembly 4 and the right grid assembly 5.

[0103] By using a combination of positioning pins and locking bolts, the angle shaping device 7 is connected between the top surface of the left grille assembly 4 and the top surface of the right grille assembly 5 in step S3. Based on the support and shaping of the angle shaping device 7, the support structure of the left grille assembly 4 on the left bottom surface 66 of the cavity is finely adjusted, and the support structure of the right grille assembly 5 on the right bottom surface 67 of the cavity is finely adjusted, so that the two shaping surfaces of the angle shaping device 7 form surface contact fits with the top surfaces of the left grille assembly 4 and the right grille assembly 5 respectively.

[0104] After completing the support fine-tuning operation, the support feet and corresponding grid positioning pads of each set of planar mating relationships are temporarily fixed by spot welding and / or bolt connection to ensure stability;

[0105] S5. Concrete is poured into the pre-embedded cavity 61 of the grid, preferably micro-expansion compensating shrinkage concrete;

[0106] Timely curing treatment should be carried out during the concrete setting process;

[0107] The solidified concrete anchors the left grid assembly 4 and the right grid assembly 5 within the grid pre-embedded cavity 61;

[0108] S6. Remove the angle shaping device 7 from the already anchored left grid assembly 4 and right grid assembly 5;

[0109] S7. On the left grid assembly 4 and the right grid assembly 5, install structures that are designed to cooperate with the main cable saddle jacking construction, such as a lower bearing plate, an mounting plate on the lower bearing plate, a polytetrafluoroethylene plate on the mounting plate, or an mounting plate and a polytetrafluoroethylene plate on the mounting plate, etc.

[0110] After the foundation construction is completed, the main cable saddle of the above-mentioned structure will undergo pre-offset jacking construction during the construction process of the suspension bridge.

[0111] Example 2

[0112] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0113] The transverse stiffening plate on the right side of the left longitudinal main reinforcement of the saddle body and the transverse stiffening plate on the left side of the right longitudinal main reinforcement of the saddle body are separate independent structures and need to be connected by separate components to form a whole.

[0114] The split-assembly connection structure has a transition plate on the front and rear sides of the longitudinal section of the suspension bridge, where the transverse stiffeners are arranged in a one-to-one matching relationship. The transition plate on each side is staggered to block the butt joint of the transverse stiffeners in a one-to-one matching relationship. The transition plates on both sides are connected to the transverse stiffeners in a one-to-one matching relationship by several locking bolts.

[0115] Although this embodiment makes the saddle body an integral structure, the combined performance of the structures on the left and right sides of the saddle body will increase the amount of manufacturing work and affect the stress performance.

[0116] Example 3

[0117] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0118] The angled joint between the left base plate 13 and the right base plate 14 of the saddle body 1 is not welded.

[0119] Example 4

[0120] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0121] The grid on the main tower has a pre-embedded cavity and a flat-bottomed structure;

[0122] The left-side grid positioning pad is formed at a high and low position on the bottom left side of the grid pre-embedded cavity; the right-side grid positioning pad is formed at a high and low position on the bottom right side of the grid pre-embedded cavity.

[0123] The outermost high-positioned grid positioning pad on each side is supported and shaped by a rigid support structure.

[0124] The above embodiments are only used to illustrate the present invention and are not intended to limit it.

[0125] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications can still be made to the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A main cable saddle for a spatial cable suspension bridge, comprising a saddle body (1) and a left saddle head (2) and a right saddle head (3) arranged on the saddle body (1) in a left-right position corresponding to the transverse direction of the suspension bridge. The center line 1 (21) of the saddle groove width of the left saddle head (2) and the center line 2 (31) of the saddle groove width of the right saddle head (3) form an acute angle fit at the upper extension. Its features are: The saddle body (1) has a left bottom plate (13) and a right bottom plate (14) that are fitted at an obtuse angle. The left base plate (13) has a left longitudinal main rib (11) that is perpendicular to the left base plate (13) and whose thickness center corresponds to the center of the saddle groove width of the left saddle head (2). The left longitudinal main rib (11) is arranged along the length direction of the left saddle head (2). The right base plate (14) has a right longitudinal main rib (12) that is perpendicular to the right base plate (14) and whose thickness center corresponds to the center of the saddle groove width of the right saddle head (3). The right longitudinal main rib (12) is arranged along the length direction of the right saddle head (3).

2. The main cable saddle for a space cable suspension bridge according to claim 1, characterized in that: The saddle body (1) is a welded steel plate structure; The saddle body (1) has multiple transverse stiffener plates (15) arranged on the left and right sides of the left longitudinal main bar (11) corresponding to the transverse direction of the suspension bridge, and multiple transverse stiffener plates (15) arranged on the right and left sides of the right longitudinal main bar (12) corresponding to the transverse direction of the suspension bridge. Each transverse stiffener plate (15) is arranged along the width direction of the corresponding saddle head. Each transverse stiffener plate (15) is vertically connected to the corresponding main bar and the bottom plate. The transverse stiffener plates (15) at the right longitudinal main bar (12) and the transverse stiffener plates (15) at the left longitudinal main bar (11) are in a one-to-one correspondence. In the one-to-one correspondence relationship, the transverse stiffening plate (15) on the left side of the right longitudinal main reinforcement (12) and the transverse stiffening plate (15) on the right side of the left longitudinal main reinforcement (11) are a whole plate structure.

3. The main cable saddle for a space cable suspension bridge according to claim 1, characterized in that: The saddle body (1) is a welded steel plate structure; The saddle body (1) has multiple transverse stiffener plates (15) arranged on the left and right sides of the left longitudinal main bar (11) corresponding to the transverse direction of the suspension bridge, and multiple transverse stiffener plates (15) arranged on the right and left sides of the right longitudinal main bar (12) corresponding to the transverse direction of the suspension bridge. Each transverse stiffener plate (15) is arranged along the width direction of the corresponding saddle head. Each transverse stiffener plate (15) is vertically connected to the corresponding main bar and the bottom plate. The transverse stiffener plates (15) at the right longitudinal main bar (12) and the transverse stiffener plates (15) at the left longitudinal main bar (11) are in a one-to-one correspondence. In the one-to-one correspondence relationship, the transverse stiffening plate (15) on the left side of the right longitudinal main bar (12) and the transverse stiffening plate (15) on the right side of the left longitudinal main bar (11) are a separate combined connection structure; The split-assembly connection structure has a transition plate on the front and rear sides of the longitudinal section of the suspension bridge corresponding to the transverse stiffeners arranged in the corresponding mating relationship. The transition plate is offset to cover the butt joint of the transverse stiffeners in the corresponding mating relationship. The transition plate is connected to the transverse stiffeners in the corresponding mating relationship by a number of locking bolts.

4. The main cable saddle for a spatial cable suspension bridge according to claim 2 or 3, characterized in that: The saddle body (1) has multiple flat reinforcing plates (16) arranged on the left and right sides of the left longitudinal main bar (11) corresponding to the height direction of the main cable saddle, and multiple flat reinforcing plates (16) arranged on the right and left sides of the right longitudinal main bar (12) corresponding to the height direction of the main cable saddle. Each flat reinforcing plate (16) is arranged along the width direction of the corresponding saddle head and is parallel to the corresponding bottom plate. Each flat reinforcing plate (16) is perpendicular to the corresponding main bar and transverse reinforcing plate (15).

5. The main cable saddle for a space cable suspension bridge according to claim 1, characterized in that: The left bottom plate (13) and the right bottom plate (14) of the saddle body (1) are integrally formed by a fusion welding structure at the corner joint.

6. The main cable saddle for a space cable suspension bridge according to claim 1 or 5, characterized in that: At the bottom of the left side base plate (13) of the saddle body (1), there is an upper support plate that matches the left side grille assembly (4); At the bottom of the right side base plate (14) of the saddle body (1), there is an upper support plate that matches the right side grille assembly (5); The upper support plate and pushing friction structure at the bottom of the left base plate (13) and the upper support plate and pushing friction structure at the bottom of the right base plate (14) are formed as independent structures.

7. The main cable saddle for a space cable suspension bridge according to claim 6, characterized in that: The left-side grille assembly (4) that is fitted to the left-side bottom plate (13) of the saddle body (1) and the right-side grille assembly (5) that is fitted to the right-side bottom plate (14) of the saddle body (1) are independent structures.

8. The main cable saddle for a space cable suspension bridge according to claim 1, characterized in that: The acute angle formed at the upper extension of the center line of the saddle groove width of the left saddle head (2) (21) and the center line of the saddle groove width of the right saddle head (3) (31) is ≤45°.

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