Main cable saddle for space cable suspension bridge and main cable saddle mounting foundation construction method

Abstract

The invention relates to the technical field of suspension bridges, and particularly discloses a main cable saddle for a space cable suspension bridge and a main cable saddle mounting foundation construction method. The main cable saddle comprises a saddle body, a left saddle head and a right saddle head, wherein the left saddle head and the right saddle head correspond to the transverse bridge direction of the suspension bridge and are arranged on the saddle body in a left-right mode. 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 being compact in structure, relatively clear in stress system and excellent in stress stability, and the design technical difficulty of the main cable saddle and the suspension bridge can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of suspension bridges, in particular to a main cable saddle for a space cable suspension bridge, and a method for constructing a foundation for installing the main cable saddle. Background Art

[0002] For a space cable suspension bridge, in addition to parabolic turning of the main cable in the vertical direction (i.e. the height direction of the suspension bridge - the vertical bridge is upward), it is also necessary to make a certain amount of arc-shaped offset turning in the horizontal direction (i.e. the width direction of the suspension bridge - the transverse bridge is upward), so that the two main cables supported and turned by the main tower are non-parallel, and 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 an important load-bearing component for the main tower to support and steer the main cable. Based on the particularity of the main cable arrangement direction in the three dimensions of length, height and width of the space cable suspension bridge, the main cable saddle is required to be able to guide and steer the main cable in the three dimensions of length, height and width. This requires that the saddle groove on the saddle head of the main cable saddle should not only guide the main cable in the length direction of the suspension bridge (i.e. the longitudinal direction of the bridge), but also steer the main cable in the height direction of the suspension bridge (i.e. the vertical direction of the bridge), and also steer the main cable in the width direction of the suspension bridge (i.e. the transverse direction of the bridge).

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

[0005] For example, Chinese patent documents disclose technologies named "a main cable saddle for a space cable suspension bridge", publication number CN210066490 U, and publication date February 14, 2020, and technologies named "a main cable saddle for a space cable", publication number CN220538404 U, and publication date February 27, 2024. This type of technology is to arrange two saddle heads on the same saddle body in the left and right positions upward from the cross bridge of the suspension bridge, and the center lines of the saddle groove width of the two saddle heads form an acute angle matching relationship at the upper end extension, and share the flat bottom plate of the same saddle body. The extension line of the center line of the saddle groove width of each saddle head is matched with the bottom plate in a non-vertical relationship. However, on the one hand, this type of technology has a complex force system, which increases the technical difficulty of designing the main cable saddle and the suspension bridge; on the other hand, the arrangement space requirements of the two saddle heads on the same saddle body are high, which is not conducive to the compactness of the overall structure.

[0006] Another example is the technology disclosed in the Chinese patent document named "Saddle for Space Cable Suspension Bridge", with the publication number CN204151677 U and the publication date of February 11, 2015. This technology is to arrange two main cable saddles with two-dimensional saddle grooves (i.e. conventional main cable saddles) at the top of the main tower in an inclined manner with a set angle, so that the saddle groove of each cable saddle is formed to bear force at the bottom and form a three-dimensional arrangement and steering function for the main cable. However, this technology has a dispersed structure and high requirements for the arrangement space of the cable saddles on the main tower; on the other hand, the two main cable saddles form a relatively independent force system on the main tower, which cannot balance the force on each other, making its force load relatively limited and the force stability poor. It needs to be balanced through a complex suspension bridge force system design, which increases the technical difficulty of suspension bridge design. Summary of the invention

[0007] The technical purpose of the present invention is to provide a main cable saddle for a space cable suspension bridge with a compact structure, a relatively clear force system and excellent force stability, as well as a method for installing a foundation for the main cable saddle in view of the particularity of the above-mentioned space cable suspension bridge and the deficiencies of the prior art.

[0008] The technical purpose of the present invention is achieved by the following technical solution: a main cable saddle for a space cable suspension bridge, comprising a saddle body and a left saddle head and a right saddle head arranged on the saddle body in left and right positions corresponding to the transverse direction of the suspension bridge; The center line 1 of the saddle groove width of the left saddle head and the center line 2 of the saddle groove width of the right saddle head form an acute angle matching relationship at the extended part of the upper end; The saddle body has a left bottom plate and a right bottom plate which are matched at an obtuse angle; The left bottom plate has a left longitudinal main rib which is perpendicular to the left bottom plate and has a thickness center corresponding to the saddle groove width center of the left pommel, and the left longitudinal main rib is arranged along the length direction of the left pommel; The right bottom plate is provided with a right longitudinal main rib which is perpendicular to the right bottom plate and has a thickness center corresponding to the width center of the saddle groove of the right pommel. The right longitudinal main rib is arranged along the length direction of the right pommel.

[0009] The above technical measures aim at the particularity of the above-mentioned space cable suspension bridge, and the same saddle body with two saddle heads is formed into two bottom plates with an angled matching relationship. Each saddle head forms a vertical match with the corresponding bottom plate through the corresponding main reinforcement, so that the force in the suspension bridge system is simple and clear. Moreover, the two saddle heads are arranged on the same saddle body in an inclined structure, and their force directions have vertically corresponding matching bottom plates, so that the forces of the two saddle heads in the suspension bridge system form a relatively clear mutual balance, which is beneficial to increase the force load, and can reliably improve the force stability, and is also beneficial to the compact arrangement of the overall structure. Therefore, the main cable saddle of the above technical measures has the technical characteristics of compact structure, relatively clear force system, and excellent force stability, which is beneficial to reduce the design technical difficulty of the main cable saddle and the suspension bridge.

[0010] As one of the preferred technical solutions, the saddle body is a steel plate welded structure; The saddle body has a plurality of transverse rib plates arranged at the left and right sides of the left longitudinal main rib corresponding to the transverse direction of the suspension bridge, and a plurality of transverse rib plates arranged at the left and right sides of the right longitudinal main rib corresponding to the transverse direction of the suspension bridge, each transverse rib plate is arranged along the width direction of the corresponding saddle head, each transverse rib plate is matched with the corresponding main rib and the bottom plate in a vertical relationship, and each transverse rib plate at the right longitudinal main rib is in a one-to-one matching relationship with each transverse rib plate at the left longitudinal main rib; In the one-to-one matching relationship, the transverse reinforcement plate at the left side of the right longitudinal main reinforcement and the transverse reinforcement plate at the right side of the left longitudinal main reinforcement form a whole plate structure.

[0011] Alternatively, the saddle body is a steel plate welded structure; The saddle body has a plurality of transverse rib plates arranged at the left and right sides of the left longitudinal main rib corresponding to the transverse direction of the suspension bridge, and a plurality of transverse rib plates arranged at the left and right sides of the right longitudinal main rib corresponding to the transverse direction of the suspension bridge, each transverse rib plate is arranged along the width direction of the corresponding saddle head, each transverse rib plate is matched with the corresponding main rib and the bottom plate in a vertical relationship, and each transverse rib plate at the right longitudinal main rib is in a one-to-one matching relationship with each transverse rib plate at the left longitudinal main rib; In the one-to-one matching relationship, the transverse reinforcement plate at the left side of the right longitudinal main reinforcement and the transverse reinforcement plate at the right side of the left longitudinal main reinforcement are a split combined connection structure; The split combined connection structure has a transition plate arranged in a corresponding matching relationship with the transverse rib plates at the forward and rear sides of the longitudinal bridge of the suspension bridge. The transition plate is staggered to block the joints of the transverse rib plates in the corresponding matching relationship. The transition plate is respectively connected to the transverse rib plates in the corresponding matching relationship through a plurality of locking bolts.

[0012] The saddle body of the above technical measures has good integrity while arranging two saddle heads. This is especially true for the transverse rib plate at the left side of the right longitudinal main reinforcement and the transverse rib plate at the right side of the left longitudinal main reinforcement as the whole plate structure. The forces in the suspension bridge system can be reliably balanced with each other, which is beneficial to improving the force load and force stability, and is also beneficial to the compactness of the overall structural arrangement.

[0013] Furthermore, the saddle body has a plurality of flat rib plates arranged at the left and right sides of the left longitudinal main rib corresponding to the height direction of the main cable saddle, and a plurality of flat rib plates arranged at the left and right sides of the right longitudinal main rib corresponding to the height direction of the main cable saddle, each flat rib plate is arranged along the width direction of the corresponding saddle head and matched with the corresponding bottom plate in parallel, and each flat rib plate is matched with the corresponding main rib and transverse rib plate in a vertical relationship. This technical measure can reliably improve the structural rigidity of the corresponding main rib, thereby effectively improving the stress stability of the entire saddle body.

[0014] As one of the preferred technical solutions, the left bottom plate and the right bottom plate of the saddle body are integrally formed by full penetration welding at the angle. This technical measure enables the two bottom plates of the saddle body that are matched at an angle to form an integral structure after the product is finished, thereby ensuring the rigidity of the entire saddle body structure and effectively improving the stress stability of the entire saddle body.

[0015] As one of the preferred technical solutions, an upper bearing plate matching the left grille assembly is connected to the bottom of the left bottom plate of the saddle body; An upper bearing plate matching the right grille assembly is connected to the bottom of the right bottom plate of the saddle body; The upper bearing plate and the push friction structure at the bottom of the left bottom plate and the upper bearing plate and the push friction structure at the bottom of the right bottom plate are formed as independent structures.

[0016] The above technical measures are designed to adapt to the pre-biased jacking construction when the main cable saddle is installed on the main tower. While meeting the technical requirements of the pre-biased jacking construction, they can effectively reduce the technical difficulty and are easy to form.

[0017] Furthermore, the left grille assembly matched with the left bottom plate of the saddle body and the right grille assembly matched with the right bottom plate of the saddle body are independent structures. This technical measure is aimed at the particularity of using the grille assembly as the bearing foundation when the main cable saddle is installed on the main tower. The grille assembly matched with the two bottom plates is formed in a split structure, which is not only easy to manufacture, but also easy to transport and construct.

[0018] As one of the preferred technical solutions, the acute angle formed by the center line 1 of the saddle groove width of the left saddle head and the center line 2 of the saddle groove width of the right saddle head at the upper end extension is ≤45°. This technical measure can avoid the main cable saddle from forming an excessively large horizontal component force upward in the transverse bridge while meeting the technical requirements for the installation of space cables (of course, the specific angle needs to be determined within this limit in combination with the design of the space cable suspension bridge), thereby effectively reducing the technical requirements for the force performance of the saddle body and ensuring that the saddle body is reliably and stably stressed.

[0019] A method for installing a main cable saddle, the method comprising the following steps: S1. Build the main tower according to the construction design; According to the design structure of the main cable saddle, a left grille assembly and a right grille assembly with independent structures are manufactured respectively; At the bottom of the left grille assembly, there are multiple groups of support feet for positioning and supporting the left grille assembly at a designed tilt angle upward from the cross bridge of the suspension bridge, and the bottom surfaces of the support feet of each group are matched in a parallel relationship; At the bottom of the right grille assembly, there are multiple groups of support feet for positioning and supporting the right grille assembly at a designed tilt angle upward from the cross bridge of the suspension bridge, and the bottom surfaces of the groups of support feet are matched in a parallel relationship; An angle shaping device is manufactured, wherein the angle shaping device has two shaping surfaces matching the matching angle between the left bottom plate and the right bottom plate of the designed main cable saddle, and a positioning pin insertion structure and a bolt insertion structure are arranged on each shaping surface; S2. A pre-buried cavity for the grille with a concave structure is reserved on the main tower to be constructed; The grid pre-embedded cavity is in the left bottom surface area of ​​the suspension bridge in the transverse direction, and multiple groups of left grid positioning pads are pre-embedded in a high-low matching relationship, and the arrangement position of each group of left grid positioning pads corresponds to each group of supporting feet at the bottom of the left grid assembly, and the top surfaces of each group of left grid positioning pads are matched in a parallel relationship; The grid pre-embedded cavity is in the right bottom surface area of ​​the suspension bridge in the transverse direction, and multiple groups of right grid positioning pads are pre-embedded in a high-low matching relationship, and the arrangement position of each group of right grid positioning pads corresponds to each group of supporting feet at the bottom of the right grid assembly, and the top surfaces of each group of right grid positioning pads are matched in a parallel relationship; The connection surface formed by the positioning points of each group of left grille positioning pads on the transverse bridge upwards and the connection surface formed by the positioning points of each group of right grille positioning pads on the transverse bridge upwards form an obtuse angle matching relationship, and the matching angle of the matching relationship corresponds to the matching angle between the left bottom plate and the right bottom plate of the designed main cable saddle; S3. The left grille assembly in step S1 is hoisted to the left area of ​​the grille pre-embedded cavity in step S2, so that each set of support feet of the left grille assembly is in a plane matching relationship and is located on the corresponding left grille positioning pad in the left area of ​​the grille pre-embedded cavity; The right grille assembly in step S1 is hoisted to the right area of ​​the grille pre-embedded cavity in step S2, so that each group of support legs of the right grille assembly is located on the corresponding right grille positioning pad in the right area of ​​the grille pre-embedded cavity in a plane matching relationship; The positioned right grille assembly and the left grille assembly form a V-shaped support surface capable of covering the left bottom plate and the right bottom plate of the designed main saddle; S4. The angle shaping device in step S1 is connected between the top surface of the left grille assembly and the top surface of the right grille assembly in step S3 by means of a positioning pin combined with a locking bolt, so that the two shaping surfaces of the angle shaping device are in surface contact with the top surface of the left grille assembly and the top surface of the right grille assembly, respectively; S5. Pouring concrete in the pre-embedded cavity of the grille; The solidified concrete anchors the left grille assembly and the right grille assembly in the grille pre-embedded cavity; S6. Remove the angle shaping device from the anchored left grille assembly and the right grille assembly; S7. Install the structure that matches the designed main cable saddle jacking construction on the left grid assembly and the right grid assembly respectively; Complete the installation foundation construction.

[0020] The above-mentioned installation foundation construction method is aimed at the main cable saddle with the saddle bottom plate as an angle structure, so that two relatively independent specific structure grid components can achieve stable tilt positioning support through the corresponding grid positioning pads on the main tower, and under the action of the angle shaping device, they can accurately fit the saddle bottom plate structure of the main cable saddle to achieve reliable anchoring in the concrete pouring structure of the main tower. It can be seen that the above-mentioned installation foundation construction method is aimed at the special structure of the main cable saddle of the above-mentioned space cable, so that the grid component as a special-shaped component on the main tower is easy to accurately shape, and can form a reliable fit with the main cable saddle structure to meet the pre-biased jacking construction and stable support of the main cable saddle.

[0021] Furthermore, the grid pre-embedded cavity in step S2 has a left bottom surface of the cavity and a right bottom surface of the cavity that match at an obtuse angle upward from the cross bridge of the suspension bridge, and the matching angle between the left bottom surface of the cavity and the right bottom surface of the cavity corresponds to the matching angle between the left bottom plate and the right bottom plate of the designed main cable saddle; Each group of left grid positioning pads arranged upward on the cross bridge of the suspension bridge is embedded in the left bottom surface of the cavity in a high-low matching relationship; Each group of right-side grid positioning pads arranged upward on the cross bridge of the suspension bridge is embedded in the right bottom surface of the cavity in a high-low matching relationship.

[0022] The grille pre-embedded cavity of the above-mentioned technical measures forms a cavity bottom surface basically corresponding to the bottom plate structure of the main cable saddle, so that the corresponding grille component can be stably positioned and supported by the grille positioning pad anchored therein. On the one hand, it can effectively ensure that the grille positioning pad is stably formed on the corresponding cavity bottom surface, and on the other hand, it is conducive to ensuring that the grille positioning pad on the corresponding cavity bottom surface is accurately arranged upward on the cross bridge, thereby ensuring that the positioned and supported grille component is arranged at an inclination angle that meets the design requirements, and has good adaptability.

[0023] Furthermore, in step S4, each set of support legs in a planar matching relationship and the corresponding grille positioning pad are temporarily fixed by spot welding and / or bolt connection. This technical measure enables the positioned supported grille assembly to form a stable positioning support on the corresponding grille positioning pad, thereby improving the safety of the grille assembly pre-assembly.

[0024] The beneficial technical effect of the present invention is that the main cable saddle of the above technical measures, in view of the particularity of the above space cable suspension bridge, forms two bottom plates with an angled matching relationship on the same saddle body where two saddle heads are arranged, and each saddle head forms a vertical match with the corresponding bottom plate through the corresponding main reinforcement, so that the force in the suspension bridge system is simple and clear. Moreover, the two saddle heads are arranged on the same saddle body in an inclined structure, and the force direction thereof has a vertically corresponding matching bottom plate, so that the forces of the two saddle heads in the suspension bridge system form a relatively clear mutual balance, which is not only conducive to increasing the force load, but also can reliably improve the force stability, and is also conducive to the compact arrangement of the overall structure.

[0025] The installation foundation construction method of the above-mentioned technical measures is aimed at the main cable saddle of the above-mentioned specific structure, so that two relatively independent specific structure grid assemblies can achieve stable inclined positioning support through the corresponding grid positioning pads on the main tower, and under the action of the angle shaping device, they can accurately fit the bottom plate structure of the main cable saddle to achieve reliable anchoring in the concrete casting structure of the main tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the main cable saddle of the present invention.

[0027] Figure 2 Schematic diagram of the structure of the grille pre-embedded cavity on the main tower during the construction of the main cable saddle installation foundation.

[0028] Figure 3 Schematic diagram of the structure in which the left grille assembly is supported in the grille embedded cavity during the construction of the main cable saddle installation foundation.

[0029] Figure 4It is a structural schematic diagram of the left grille assembly and the right grille assembly supported in the grille embedded cavity during the construction of the main cable saddle installation foundation.

[0030] Figure 5 It is a structural schematic diagram of the angle shaping device for shaping the angles of the left grille assembly and the right grille assembly during the construction of the main cable saddle installation foundation.

[0031] Figure 6 Schematic diagram of the structure in which the left grille assembly and the right grille assembly are anchored in the grille embedded cavity during the construction of the main cable saddle installation foundation.

[0032] Figure 7 for Figure 1 The main saddle shown is Figure 6 Schematic diagram of the structure of the grille assembly shown.

[0033] Meaning of the codes in the figure: 1—saddle body; 11—left longitudinal main rib; 12—right longitudinal main rib; 13—left bottom plate; 14—right bottom plate; 15—transverse rib plate; 16—flat rib plate; 2—left side saddle head; 21—center line of saddle groove width; 3—right side saddle head; 31—center line 2 of saddle groove width; 4—left grille assembly; 41—first support leg of left grille; 42—second support leg of left grille; 5—right grille assembly; 51—first support leg of the right grille; 52—second support leg of the right grille; 6—main tower; 61—pre-buried grille cavity; 62—first positioning pad of the left grille; 63—second positioning pad of the left grille; 64—first positioning pad of the right grille; 65—second positioning pad of the right grille; 66—bottom surface of the left side of the cavity; 67—bottom surface of the right side of the cavity; 7—Angle shaping device; α—angle one; β—Angle 2. DETAILED DESCRIPTION

[0034] The present invention relates to the technical field of suspension bridges, and in particular to a main cable saddle for a space cable suspension bridge, and a method for installing a base for the main cable saddle. The main technical solution of the present invention is described in detail below in conjunction with a plurality of embodiments. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The technical solution of the present invention is explained clearly and in detail; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of embodiment 1.

[0035] It should be noted that the drawings of the present invention are schematic, and unnecessary details have been simplified to clarify the technical purpose of the present invention, so as to avoid blurring the technical solution of the present invention that contributes to the prior art. In addition, the expressions "approximately", "substantially" and the like regarding quantity or matching relationship in the following text mean that reasonable assembly errors and processing errors in the industry are allowed to exist, and do not literally express absolute quantities or matching relationships.

[0036] Example 1 See also Figure 1 As shown, the cable saddle of the present invention is a main cable saddle for a space cable suspension bridge, which includes a saddle body 1 of a steel plate welded structure and two cast structure pommels arranged on the saddle body 1 - a left pommel 2 and a right pommel 3.

[0037] Specifically, the saddle body 1 of the steel plate welded structure has at least two longitudinal main ribs (i.e., left longitudinal main ribs 11 and right longitudinal main ribs 12 ), two bottom plates (i.e., left bottom plate 13 and right bottom plate 14 ), a plurality of transverse ribs 15 , and a plurality of flat ribs 16 .

[0038] In order to adapt to the three-dimensional support of the main cable by the space cable suspension bridge, the left saddle head 2 and the right saddle head 3 correspond to the transverse direction of the suspension bridge, and are arranged in a left-right position and welded obliquely on 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 saddle groove width center line 21 of the left saddle head 2 and the saddle groove width center line 231 of the right saddle head 3 form an acute angle matching relationship at the upper end extension, that is, forming an angle α, and the value of the angle α is required to be no more than 45°, that is, the acute angle formed by the saddle groove width center line 21 of the left saddle head 2 and the saddle groove width center line 231 of the right saddle head 3 at the upper end extension is ≤45°. The specific value depends on the design requirements of the space cable suspension bridge, such as 45°, 40° or 30°.

[0039] In the structural system of a suspension bridge, the force of the main cable supported by the pommel is mainly concentrated in the center direction of the saddle groove width of the pommel. Therefore, in order to adapt to 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 pommel 2, that is, the thickness center of the left longitudinal main reinforcement 11 corresponds to the center of the saddle groove width of the left pommel 2, and the length direction of the left longitudinal main reinforcement 11 is arranged along the length direction of the left pommel 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 pommel 3, that is, the thickness center of the right longitudinal main reinforcement 12 corresponds to the center of the saddle groove width of the right pommel 3, and the length direction of the right longitudinal main reinforcement 12 is arranged along the length direction of the right pommel 3. In this way, the left longitudinal main rib 11 of the saddle body 1 basically forms an extension line of the saddle groove width center line 1 21 of the left pommel 2, and the right longitudinal main rib 12 of the saddle body 1 basically forms an extension line of the saddle groove width center line 2 31 of the right pommel 3. The left longitudinal main rib 11 and the right longitudinal main rib 12 form an inclined arrangement in the welding structure of the saddle body 1, and the two are similar to a figure eight fit.

[0040] In order to adapt to the inclined arrangement of the left longitudinal main rib 11 of the saddle body 1 and form a simple and clear load and transfer of its force, the left bottom plate 13 of the saddle body 1 is vertically welded to the bottom end of the left longitudinal main rib 11. Similarly, in order to adapt to the inclined arrangement of the right longitudinal main rib 12 of the saddle body 1 and form a simple and clear load and transfer of its force, the right bottom plate 14 of the saddle body 1 is vertically welded to the bottom end of the right longitudinal main rib 12. In this way, the left bottom plate 13 and the right bottom plate 14 of the saddle body 1 are arranged obliquely relative to the horizontal direction, and are not in the same plane, and an obtuse angle matching relationship is formed between the two - that is, an angle β is formed, and the value of the angle β is determined by the value of the above-mentioned angle α.

[0041] From the above-mentioned structure of the saddle body 1, it can be seen that the saddle body 1 has a left bottom plate 13 and a right bottom plate 14 that are matched at an obtuse angle; the left bottom plate 13 has a left longitudinal main rib 11 that is perpendicular to the left bottom plate 13 and whose thickness center corresponds to the saddle groove width center of the left pommel 2; the right bottom plate 14 has a right longitudinal main rib 12 that is perpendicular to the right bottom plate 14 and whose thickness center corresponds to the saddle groove width center of the right pommel 3.

[0042] In order to ensure the stability and force rigidity of the formed structure of the saddle body 1, multiple transverse rib 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, and each transverse rib plate 15 is arranged vertically along the height direction of the left longitudinal main reinforcement 11, that is, each transverse rib plate 15 is arranged along the width direction of the left saddle head 2 in the transverse direction. Multiple transverse rib 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 rib plates 15 on both sides of the left longitudinal main reinforcement 11 are in a one-to-one corresponding matching relationship. In the top view direction, the left longitudinal main reinforcement 11 and the transverse rib plates 15 on the left and right sides are in a cross-shaped matching relationship. Similarly, multiple transverse rib 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, and each transverse rib plate 15 is arranged vertically along the height direction of the right longitudinal main reinforcement 12, that is, each transverse rib plate 15 is arranged along the width direction of the right saddle head 3 in the transverse direction. Multiple transverse rib 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 rib plates 15 on both sides of the right longitudinal main reinforcement 12 are in a one-to-one corresponding matching relationship. In the top view direction, the right longitudinal main reinforcement 12 and the transverse rib plates 15 on the left and right sides are in a cross-shaped matching relationship. The transverse ribs 15 at the right longitudinal main ribs 12 and the transverse ribs 15 at the left longitudinal main ribs 11 are also in a one-to-one matching relationship, and in this one-to-one matching relationship, the transverse ribs 15 at the left side of the right longitudinal main ribs 12 and the transverse ribs 15 at the right side of the left longitudinal main ribs 11 are a whole plate structure, that is, each transverse rib 15 between the right longitudinal main ribs 12 and the left longitudinal main ribs 11 is the same. Each transverse rib 15 in the aforementioned assembly structure is matched with the corresponding main ribs and the corresponding bottom plate in a vertical relationship, and is welded and fixed.

[0043] In order to ensure the stability and force rigidity of the formed structure of the saddle body 1, a plurality of flat rib plates 16 are arranged on the left and right sides of the left longitudinal main rib 11 respectively corresponding to the height direction of the main cable saddle. Each flat rib plate 16 is arranged in the horizontal direction (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 rib plates 16 on the same side are arranged at intervals in the height direction. The flat rib plates 16 on both sides of the left longitudinal main rib 11 are in a one-to-one corresponding matching relationship. In the vertical section direction, the left longitudinal main rib 11 and the flat rib plates 16 on the left and right sides are in a cross-shaped matching relationship. Based on the position interference of the flat rib plates 16 and the transverse rib plates 15, the flat rib plates 16 on the same side of the left longitudinal main rib 11 are divided into multiple groups in the length direction, and each group corresponds to the gap between adjacent transverse rib plates 15 at the left longitudinal main rib 11. Similarly, multiple flat rib plates 16 are arranged on the left and right sides of the right longitudinal main rib 12 corresponding to the height direction of the main cable saddle. Each flat rib plate 16 is arranged in the horizontal direction (inclined to the theoretical horizontal line) along the width direction of the right saddle head 3 and is parallel to the right bottom plate 14. Adjacent flat rib plates 16 on the same side are arranged at intervals in the height direction. The flat rib plates 16 on both sides of the right longitudinal main rib 12 are in a one-to-one matching relationship. In the vertical section direction, the right longitudinal main rib 12 and the flat rib plates 16 on the left and right sides are in a cross-shaped matching relationship. Based on the position interference of the flat rib plates 16 and the transverse rib plates 15, the flat rib plates 16 on the same side of the right longitudinal main rib 12 are divided into multiple groups in the length direction, and each group corresponds to the gap between the adjacent transverse rib plates 15 at the right longitudinal main rib 12. Each flat rib plate 16 in the aforementioned assembly structure is matched with the corresponding main rib and the corresponding transverse rib plate 15 in a vertical relationship and welded and fixed. In the aforementioned assembly structure, the flat rib plate 16 at the left side of the right longitudinal main rib 12 is disconnected from the flat rib plate 16 at the right side of the left longitudinal main rib 11 and is relatively independent.

[0044] Based on the above-mentioned that the left side structure and the right side structure of the saddle body 1 are an inseparable whole, and the left side bottom plate 13 and the right side bottom plate 14 of the saddle body 1 are composed of two plates and are not an integral whole, in order to improve the structural rigidity, the left side bottom plate 13 and the right side bottom plate 14 are formed as a whole by a full penetration welding structure at the corner fitting.

[0045] The bottom of the left bottom plate 13 of the saddle body 1 is connected to an upper plate matching the left grille assembly 4, and a corresponding push friction structure, such as a stainless steel plate, is connected to the upper plate; the bottom of the right bottom plate 14 is connected to an upper plate matching the right grille assembly 5, and a corresponding push friction structure, such as a stainless steel plate, is connected to the upper plate. Based on the angle matching relationship between the left bottom plate 13 and the right bottom plate 14, the upper plate and the push friction structure at the bottom of the left bottom plate 13 and the upper plate and the push friction structure at the bottom of the right bottom plate 14 are formed as relatively independent structures.

[0046] 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 side bottom plate 13 of the saddle body 1 has a matching left side grille assembly 4, and the right side bottom plate 14 of the saddle body 1 has a matching right side grille assembly 5, and the left side grille assembly 4 matched with the left side bottom plate 13 and the right side grille assembly 5 matched with the right side bottom plate 14 are relatively independent structures.

[0047] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the installation foundation of the main cable saddle on the main tower 6 is built according to the construction method of the following process steps: S1. Construct the main tower 6 according to the construction design; According to the design structure of the main cable saddle, a left grid assembly 4 and a right grid assembly 5 with independent structures 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. The main structure of the left grille component 4 is the same as that of a conventional grille component, and the special part is its bottom. At the bottom of the left grille component 4, multiple groups of supporting feet with wedge-shaped structures are connected. These supporting feet are arranged in the longitudinal direction and the transverse direction of the left grille component 4, respectively, and correspond to the transverse direction of the suspension bridge. The bottom of the left grille component 4 near the outer edge is the left grille first supporting foot 41, and the bottom of the left grille component 4 near the inner edge is the left grille second supporting foot 42. The bottom surfaces of the left grille first supporting foot 41 and the left grille second supporting foot 42 are basically matched in a parallel relationship. In this way, at the bottom of the left grille component 4, multiple groups of supporting feet are formed that can position and support the left grille component 4 at a designed inclination angle in the transverse direction of the suspension bridge. Similarly, the main structure of the right grille component 5 is the same as that of a conventional grille component, and the special part is its bottom. At the bottom of the right grille component 5, multiple groups of supporting feet with wedge-shaped structures are connected. These supporting feet are arranged in the longitudinal direction and the transverse direction of the right grille component 5, respectively, and correspond to the transverse direction of the suspension bridge. The bottom of the right grille component 5 close to the outer edge is the right grille first supporting foot 51, and the bottom of the right grille component 5 close to the inner edge is the right grille second supporting foot 52. The bottom surfaces of the right grille first supporting foot 51 and the right grille second supporting foot 52 are basically matched in a parallel relationship. In this way, at the bottom of the right grille component 5, multiple groups of supporting feet are formed that can position and support the right grille component 5 at a designed inclination angle in the transverse direction of the suspension bridge. An angle shaping device 7 is manufactured. The angle shaping device 7 is a rigid structure having two shaping surfaces. The angle between the two shaping surfaces of the angle shaping device 7 matches the left bottom plate 13 and the right bottom plate 14 of the above-mentioned main cable saddle, that is, the angle shaping device 7 has two shaping surfaces that match the matching angle between the left bottom plate 13 and the right bottom plate 14 of the designed main cable saddle; in order to enable the angle shaping 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 shaping surface of the angle shaping device 7; S2. On the main tower 6 constructed, a recessed structure of the grid is reserved for the embedded cavity 61; In order to form a stable support for the anchoring of the grid assembly and facilitate the construction operation, the grid pre-embedded cavity 61 has a cavity left bottom surface 66 and a cavity right bottom surface 67 that match at an obtuse angle upward from the cross bridge of the suspension bridge, and the matching angle between the cavity left bottom surface 66 and the cavity right bottom surface 67 basically corresponds to the matching angle between the left bottom plate 13 and the right bottom plate 14 of the designed main cable saddle, and no high precision requirement is made for this matching angle; On the left bottom surface 66 of the grid pre-embedded cavity 61, multiple groups of left grid positioning pads of wedge-shaped structures are anchored and arranged, and the arrangement positions of these left grid positioning pads correspond to the arrangement positions of the groups of supporting feet at the bottom of the above-mentioned left grid assembly 4; thus, corresponding to the transverse direction of the suspension bridge, two groups of left grid positioning pads are pre-embedded in the left bottom surface 66 of the cavity in a high-low matching relationship - namely, the left grid first positioning pad 62 close to the outside, and the left grid second positioning pad 63 close to the inside, and the left grid first positioning pad 62 and the left grid second positioning pad 63 are matched in a parallel relationship on the top surface of the suspension bridge facing upward in the transverse direction; On the right bottom surface 67 of the cavity 61 of the grid pre-embedded cavity, multiple groups of right grid positioning pads of wedge-shaped structure are anchored and arranged, and the arrangement positions of these right grid positioning pads correspond to the arrangement positions of the groups of supporting feet at the bottom of the above-mentioned right grid assembly 5; thus, corresponding to the transverse direction of the suspension bridge, two groups of right grid positioning pads are pre-embedded in the right bottom surface 67 of the cavity in a high-low matching relationship - namely, the right grid first positioning pad 64 close to the outside, and the right grid second positioning pad 65 close to the inside, and the right grid first positioning pad 64 and the right grid second positioning pad 65 are matched in a parallel relationship on the top surface of the suspension bridge facing upward in the transverse direction; In the matching structure of the left bottom surface 66 of the cavity and the right bottom surface 67 of the cavity in the above-mentioned grid pre-embedded cavity 61, the matching accuracy of the angle between the left bottom surface 66 of the cavity and the right bottom surface 67 of the cavity is not too high, and of course the higher the better; however, it is required that the connection surface formed by the first positioning pad 62 of the left grid and the second positioning pad 63 of the left grid on the left bottom surface 66 of the cavity with the positioning point upward on the cross bridge of the suspension bridge, and the connection surface formed by the first positioning pad 64 of the right grid and the second positioning pad 65 of the right grid on the right bottom surface 67 of the cavity with the positioning point upward on the cross bridge of the suspension bridge, form an obtuse angle matching relationship, and the matching angle of the matching relationship corresponds to the matching angle between the left bottom plate 13 and the right bottom plate 14 of the designed main saddle with high accuracy as much as possible; Of course, requiring the connection surface formed by the anchoring grid positioning pad of the left bottom surface 66 of the cavity and the right bottom surface 67 of the cavity to be accurately matched with the left bottom plate 13 and the right bottom plate 14 of the main cable saddle will inevitably increase the technical difficulty of the construction operation. Therefore, no high technical requirements are temporarily made; S3. The left grille assembly 4 in step S1 is hoisted to the left area of ​​the grille pre-embedded cavity 61 in step S2, so that each set of support legs of the left grille assembly 4 is located on the corresponding left grille positioning pad in the left area of ​​the grille pre-embedded cavity 61 in a plane matching relationship, that is, the left grille first support leg 41 at the bottom of the left grille assembly 4 is located on the left grille first positioning pad 62 on the left bottom surface 66 of the cavity, and the left grille second support leg 42 at the bottom of the left grille assembly is located on the left grille second positioning pad 63 on the left bottom surface 66 of the cavity; The right grille assembly 5 in step S1 is hoisted to the right area of ​​the grille pre-embedded cavity 61 in step S2, so that each group of support legs of the right grille assembly 5 is located on the corresponding right grille positioning pad in the right area of ​​the grille pre-embedded cavity 61 in a plane matching relationship, that is, the right grille first support leg 51 at the bottom of the right grille assembly 5 is located on the right grille first positioning pad 64 on the right bottom surface 67 of the cavity, and the right grille second support leg 52 at the bottom of the right grille assembly is located on the right grille second positioning pad 65 on the right bottom surface 67 of the cavity; The positioned right grille assembly 5 and left grille assembly 4 form a V-shaped support surface capable of covering the left bottom plate 13 and the right bottom plate 14 of the designed main saddle; S4. The angle shaping device 7 in step S1 is hoisted to the top corners of the left grille assembly 4 and the right grille assembly 5, so that the two shaping surfaces of the angle shaping device 7 correspond to the top surface of the left grille assembly 4 and the top surface of the right grille assembly 5; The angle shaping device 7 is connected between the top surface of the left grille component 4 and the top surface of the right grille component 5 in step S3 by means of a connection method of a positioning pin combined with a locking bolt. Based on the support shaping of the angle shaping device 7, the left grille component 4 is finely adjusted on the support structure of the left bottom surface 66 of the cavity, and the right grille component 5 is finely adjusted on the support structure of the right bottom surface 67 of the cavity, so that the two shaping surfaces of the angle shaping device 7 form surface contact with the top surface of the left grille component 4 and the top surface of the right grille component 5 respectively; After completing the support fine-tuning operation, temporarily fix each set of support feet and corresponding grid positioning pads in a plane matching relationship by spot welding and / or bolt connection to ensure stability; S5. Pouring concrete in the grid embedded cavity 61, preferably micro-expansion compensation shrinkage concrete; Carry out maintenance in time during the solidification process of concrete; The solidified concrete anchors the left grid assembly 4 and the right grid assembly 5 in the grid pre-embedded cavity 61; S6. Remove the angle shaping device 7 from the anchored left grille assembly 4 and the right grille assembly 5; S7. On the left grille assembly 4 and the right grille assembly 5, respectively, the main cable saddle push construction structure designed to cooperate with the installation - such as the lower bearing plate, the mounting plate on the lower bearing plate, the polytetrafluoroethylene plate on the mounting plate, and another example of the mounting plate, the polytetrafluoroethylene plate on the mounting plate, etc.; After the installation foundation construction is completed, the main cable saddle of the above structure will be pre-biased and pushed during the construction of the suspension bridge.

[0048] Example 2 The other contents of this embodiment are the same as those of Embodiment 1, except that: The transverse rib plate on the right side of the left longitudinal main rib of the saddle body and the transverse rib plate on the left side of the right longitudinal main rib of the saddle body are disconnected independent structures and need to be connected by a split combination structure to form a whole; The split combined connection structure has transition plates arranged in a one-to-one corresponding relationship at the front and rear sides of the longitudinal bridge of the suspension bridge. The transition plates on each side are offset to block the joints of the transverse rib plates in a one-to-one corresponding relationship. The transition plates on both sides are respectively connected to the transverse rib plates in a one-to-one corresponding relationship through a plurality of locking bolts.

[0049] Although the saddle body is formed into an integral structure in this embodiment, due to the combined performance of the left and right side structures of the saddle body, the manufacturing workload will be increased on the one hand, and the stress bearing performance will be affected on the other hand.

[0050] Example 3 The other contents of this embodiment are the same as those of Embodiment 1, except that: The corner fitting portion between the left bottom plate 13 and the right bottom plate 14 of the saddle body 1 is not welded.

[0051] Example 4 The other contents of this embodiment are the same as those of Embodiment 1, except that: The grille pre-buried cavity on the main tower is a flat bottom structure; The left grille positioning pad is formed in a high and low position on the left bottom surface area of ​​the grille pre-embedded cavity; the right grille positioning pad is formed in a high and low position on the right bottom surface area of ​​the grille pre-embedded cavity; The grille positioning pads at the outermost side of each side are at a high position and are supported and formed by a rigid supporting structure.

[0052] The above embodiments are only used to illustrate the present invention, but not to limit it.

[0053] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A main cable saddle for a space 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 left and right positions corresponding to the transverse direction of the suspension bridge; The saddle groove width centerline 1 (21) of the left saddle head (2) and the saddle groove width centerline 2 (31) of the right saddle head (3) form an acute angle matching relationship at the extended portion of the upper end; Features: The saddle body (1) comprises a left bottom plate (13) and a right bottom plate (14) which are matched at an obtuse angle. The left bottom plate (13) has a left longitudinal main rib (11) which is perpendicular to the left bottom plate (13) and has a thickness center corresponding to a saddle groove width center of the left saddle head (2), and the left longitudinal main rib (11) is arranged along the length direction of the left saddle head (2); The right bottom plate (14) has a right longitudinal main rib (12) which is perpendicular to the right bottom plate (14) and has a thickness center corresponding to the width center of the saddle groove of the right pommel (3); the right longitudinal main rib (12) is arranged along the length direction of the right pommel (3).

2. The main saddle for a space cable suspension bridge according to claim 1, characterized in that: The saddle body (1) is a steel plate welded structure; The saddle body (1) comprises a plurality of transverse rib plates (15) arranged at left and right sides of the left longitudinal main rib (11) corresponding to the transverse direction of the suspension bridge, and a plurality of transverse rib plates (15) arranged at left and right sides of the right longitudinal main rib (12) corresponding to the transverse direction of the suspension bridge, each transverse rib plate (15) being arranged along the width direction of the corresponding saddle head, each transverse rib plate (15) being matched with the corresponding main rib and the bottom plate in a vertical relationship, and each transverse rib plate (15) at the right longitudinal main rib (12) being matched with each transverse rib plate (15) at the left longitudinal main rib (11) in a one-to-one corresponding relationship; In the one-to-one matching relationship, the transverse rib plate (15) on the left side of the right longitudinal main rib (12) and the transverse rib plate (15) on the right side of the left longitudinal main rib (11) form 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 steel plate welded structure; The saddle body (1) comprises a plurality of transverse rib plates (15) arranged at left and right sides of the left longitudinal main rib (11) corresponding to the transverse direction of the suspension bridge, and a plurality of transverse rib plates (15) arranged at left and right sides of the right longitudinal main rib (12) corresponding to the transverse direction of the suspension bridge, each transverse rib plate (15) being arranged along the width direction of the corresponding saddle head, each transverse rib plate (15) being matched with the corresponding main rib and the bottom plate in a vertical relationship, and each transverse rib plate (15) at the right longitudinal main rib (12) being matched with each transverse rib plate (15) at the left longitudinal main rib (11) in a one-to-one corresponding relationship; In the one-to-one matching relationship, the transverse reinforcement plate (15) on the left side of the right longitudinal main reinforcement (12) and the transverse reinforcement plate (15) on the right side of the left longitudinal main reinforcement (11) are a split combined connection structure; The split combined connection structure has a transition plate arranged in a corresponding matching relationship with the transverse rib plates at the forward and rear sides of the longitudinal bridge of the suspension bridge. The transition plate is staggered to block the joints of the transverse rib plates in the corresponding matching relationship. The transition plate is respectively connected to the transverse rib plates in the corresponding matching relationship through a plurality of locking bolts.

4. The main saddle for a space cable suspension bridge according to claim 2 or 3, characterized in that: The saddle body (1) comprises a plurality of flat rib plates (16) arranged on the left and right sides of the left longitudinal main rib (11) corresponding to the height direction of the main cable saddle, and a plurality of flat rib plates (16) arranged on the left and right sides of the right longitudinal main rib (12) corresponding to the height direction of the main cable saddle. Each flat rib plate (16) is arranged along the width direction of the corresponding saddle head and matched in parallel with the corresponding bottom plate. Each flat rib plate (16) is matched with the corresponding main rib and transverse rib plate (15) in a vertical relationship.

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 through-welding structure at the corner fitting positions.

6. The main saddle for a space cable suspension bridge according to claim 1 or 5, characterized in that: An upper support plate that matches the left grille assembly (4) is connected to the bottom of the left bottom plate (13) of the saddle body (1); An upper support plate that matches the right grille assembly (5) is connected to the bottom of the right bottom plate (14) of the saddle body (1); The upper bearing plate and the push-pushing friction structure at the bottom of the left bottom plate (13) and the upper bearing plate and the push-pushing friction structure at the bottom of the right bottom 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 grille assembly (4) matched with the left bottom plate (13) of the saddle body (1) and the right grille assembly (5) matched with the right 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 by the saddle groove width center line 1 (21) of the left saddle head (2) and the saddle groove width center line 2 (31) of the right saddle head (3) at the extended upper end is ≤45°.

9. A method for installing a main cable saddle according to any one of claims 1 to 8, characterized in that: The installation foundation construction method comprises the following process steps: S1. Construct the main tower (6) according to the construction design; According to the design structure of the main cable saddle, a left grille assembly (4) and a right grille assembly (5) having structures independent of each other are manufactured respectively; At the bottom of the left grille component (4), there are a plurality of groups of support feet for positioning and supporting the left grille component (4) at a designed tilt angle upward from the cross bridge of the suspension bridge, and the bottom surfaces of the groups of support feet are matched in a parallel relationship; At the bottom of the right grille assembly (5), there are a plurality of groups of supporting feet for positioning and supporting the right grille assembly (5) at a designed tilt angle upward from the cross bridge of the suspension bridge, and the bottom surfaces of the groups of supporting feet are matched in a parallel relationship; An angle shaping device (7) is manufactured, wherein the angle shaping device (7) has two shaping surfaces that match the matching angle between the left bottom plate (13) and the right bottom plate (14) of the designed main cable saddle, and a positioning pin insertion structure and a bolt insertion structure are arranged on each shaping surface; S2. A grid pre-embedded cavity (61) is reserved for a concave structure on the main tower (6) being constructed; The grille pre-embedded cavity (61) is pre-embedded with a plurality of groups of left grille positioning pads in a high-low matching relationship in the left bottom surface area of ​​the suspension bridge in the transverse direction, and the arrangement position of each group of left grille positioning pads corresponds to each group of supporting feet at the bottom of the left grille assembly (4), and the top surfaces of each group of left grille positioning pads are matched in a parallel relationship; The grid pre-embedded cavity (61) is pre-embedded with a plurality of groups of right grid positioning pads in a high-low matching relationship in the right bottom surface area of ​​the suspension bridge in the transverse direction, and the arrangement position of each group of right grid positioning pads corresponds to each group of supporting feet at the bottom of the right grid assembly (5), and the top surfaces of each group of right grid positioning pads are matched in a parallel relationship; The connection surfaces formed by the positioning points of each group of left grille positioning pads on the transverse bridge upwards and the connection surfaces formed by the positioning points of each group of right grille positioning pads on the transverse bridge upwards form an obtuse angle matching relationship, and the matching angle of the matching relationship corresponds to the matching angle between the left bottom plate (13) and the right bottom plate (14) of the designed main cable saddle; S3. The left grille assembly (4) in step S1 is hoisted to the left region of the grille pre-embedded cavity (61) in step S2, so that each set of support legs of the left grille assembly (4) is located on the corresponding left grille positioning pad in the left region of the grille pre-embedded cavity (61) in a plane matching relationship; The right grille assembly (5) in step S1 is hoisted into the right area of ​​the grille pre-embedded cavity (61) in step S2, so that each group of supporting feet of the right grille assembly (5) is located on the corresponding right grille positioning pad in the right area of ​​the grille pre-embedded cavity (61) in a planar matching relationship; The positioned right grille assembly (5) and left grille assembly (4) form a V-shaped support surface capable of covering the left bottom plate (13) and the right bottom plate (14) of the designed main saddle; S4. The angle shaping device (7) in step S1 is connected between the top surface of the left grille component (4) and the top surface of the right grille component (5) in step S3 by means of a positioning pin combined with a locking bolt, so that the two shaping surfaces of the angle shaping device (7) are in surface contact with the top surface of the left grille component (4) and the top surface of the right grille component (5), respectively; S5. Pouring concrete in the grille pre-embedded cavity (61); The solidified concrete anchors the left grille assembly (4) and the right grille assembly (5) in the grille pre-embedded cavity (61); S6. Remove the angle shaping device (7) from the anchored left grille assembly (4) and the right grille assembly (5); S7. On the left grille assembly (4) and the right grille assembly (5), respectively, a structure for installing the main cable saddle push construction in coordination with the design; Complete the installation foundation construction.

10. The main cable saddle installation foundation construction method according to claim 9, characterized in that: The grid pre-embedded cavity (61) in step S2 has a cavity left bottom surface (66) and a cavity right bottom surface (67) that match at an obtuse angle upward from the cross bridge of the suspension bridge, and the matching angle between the cavity left bottom surface (66) and the cavity right bottom surface (67) corresponds to the matching angle between the left bottom plate (13) and the right bottom plate (14) of the designed main cable saddle; Each group of left grid positioning pads arranged upward on the cross bridge of the suspension bridge is pre-buried on the left bottom surface (66) of the cavity in a high-low matching relationship; Each group of right side grid positioning pads arranged upward on the cross bridge of the suspension bridge is pre-buried on the right side bottom surface (67) of the cavity in a high-low matching relationship.

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