Sliding surface protection structure for pre-deflection incremental launching construction of cable saddle of suspension bridge

Abstract

The utility model discloses a sliding surface protection structure for suspension bridge cable saddle pre-deviation pushing construction, the protection structure is provided with a support plate connected to the pushing front end of a pre-deviation cable saddle, and the support plate extends outwards at the pushing front end of the pre-deviation cable saddle and is located above the seat side sliding surface in the pushing advancing direction; the bottom side surface of the supporting plate is higher than the saddle side sliding surface at the bottom of the cable saddle and forms a non-contact spacing fit relationship with the lower saddle side sliding surface in the height direction; the supporting plate is used for a constructor to tread and pass at the pushing front end of the pre-deviation cable saddle in the state that the constructor does not tread on the side sliding face of the seat in pushing construction. According to the cable saddle, covering protection on the pushing sliding friction plate on the base on the front side in the pushing advancing direction is not hindered, a supporting platform for a constructor to movably tread can be built at the pushing front end of the cable saddle, and the protection effect is good.

Description

Technical Field

[0001] The utility model relates to an auxiliary structure for jacking construction of a suspension bridge saddle, in particular to a jacking sliding friction pair protective structure for pre-biased jacking construction of a suspension bridge saddle. Background Art

[0002] During the construction of the suspension bridge structure, in order to ensure that the main tower (or pier, the same below) can always be in a safe stress state during the hoisting process of the stiffening beam, etc., it is necessary to pre-deflect the saddle supporting the main cable on the top of the main tower in the early stage, so that it can be gradually pushed to the designed support position as the bridge construction progresses, so as to achieve the force balance of the main cables on both sides of the main tower. The specific pre-deflection jacking construction process of the saddle is disclosed in the Chinese patent literature, such as "A combined saddle jacking base and a jacking construction method based on the base" (publication number CN 117071454 A, publication date November 17, 2023), "A main cable saddle of a suspension bridge" (publication number CN116537051 A, publication date August 4, 2023) and other technologies.

[0003] In the pre-biased jacking construction of the saddle, in order to ensure the smooth jacking construction of the saddle on the top base of the main tower and reduce the jacking friction resistance, a friction-reducing sliding structure, namely a jacking sliding friction pair, is set between the bottom of the saddle and the top of the base. The jacking sliding friction pair is usually composed of a stainless steel plate fixed to the bottom of the saddle and a polytetrafluoroethylene plate fixed to the top of the base, and the sliding surface precision matching technology of the two is high.

[0004] The process of pushing the saddle on the base is to gradually push the pre-biased saddle to the designed support position. This makes the longitudinal length of the base greater than the longitudinal length of the bottom of the saddle, and the longitudinal length of the top push sliding friction plate (polytetrafluoroethylene plate) of the base is greater than the longitudinal length of the bottom push sliding friction plate (stainless steel plate) of the saddle. In this way, when the saddle is located in the pre-biased position on the base, the push sliding friction plate-polytetrafluoroethylene plate on the front side of the base in the pushing direction is in an empty and exposed state.

[0005] During the construction of the suspension bridge structure, the pre-biased jacking construction period of the cable saddle is long, ranging from several months to several years. During such a long jacking construction period, the exposed jacking sliding friction plate on the front base of the jacking advancing direction will inevitably be corroded and contaminated; in addition, the construction personnel also need to carry out frequent activities on the top of the main tower to ensure the smooth progress of the saddle jacking and main cable erection. Under such working conditions, in order to ensure that the jacking sliding friction plate on the front base of the jacking advancing direction can cooperate with the cable saddle for jacking, it needs to be protected.

[0006] At present, the protection of the jacking sliding friction plate on the front side base of the jacking advancing direction is achieved by covering it with a plurality of pads, which are removed piece by piece during the jacking construction operation as the jacking progresses. However, although these pads provide a covering protection for the jacking sliding friction plate on the front side base of the jacking advancing direction, they should not be stepped on, otherwise the force will be transmitted to the covered jacking sliding friction plate, which may easily cause damage to the covered jacking sliding friction plate. Therefore, the current covering protection structure for the jacking sliding friction plate on the front side base of the jacking advancing direction does not have a support platform for construction workers to move and step on. On the one hand, it is easy to step on it by mistake, which is not conducive to the reliable protection of the jacking sliding friction plate on the front side base of the jacking advancing direction; on the other hand, it is not conducive to the safe movement of construction workers on the top of the main tower, which increases the difficulty of construction.

[0007] In view of this, it is necessary to design a protective structure that does not hinder the covering and protection of the jacking sliding friction plate on the front side of the base in the jacking travel direction, and can form a jacking sliding friction pair (i.e., the jacking sliding friction surface on the base) for construction workers to step on. Utility Model Content

[0008] The technical purpose of the utility model is to provide a protective structure for the sliding surface (the pushing sliding friction surface on the base) used in the pre-biased jacking construction of the suspension bridge saddle in view of the particularity of the pre-biased jacking construction of the suspension bridge saddle and the shortcomings of the existing technology, which does not hinder the covering and protection of the jacking sliding friction plate on the front side of the base in the jacking advancing direction, and can form a protective structure for construction personnel to move and step on, that is, a protective structure for the sliding surface (the pushing sliding friction surface on the base) used in the pre-biased jacking construction of the suspension bridge saddle.

[0009] The technical purpose of the utility model is achieved by the following technical scheme: a sliding surface protection structure for pre-biased jacking construction of a suspension bridge saddle, the protection structure having a support plate connected to the jacking front end of the pre-biased saddle, the support plate extending outward from the jacking front end of the pre-biased saddle and located above the seat side sliding surface in the jacking advancing direction;

[0010] The bottom surface of the support plate is higher than the saddle side sliding surface at the bottom of the cable saddle, and forms a non-contact spacing matching relationship with the lower seat side sliding surface in the height direction;

[0011] During the pushing construction of the cable saddle, the support plate is used for construction workers to step on and pass through the pushing front end of the pre-biased cable saddle without stepping on the side sliding surface of the seat.

[0012] The above technical measures are aimed at the particularity of the pre-biased jacking construction of the suspension bridge saddle. A support plate extending outward is connected to the jacking front end of the saddle to form a clearance fit with the jacking sliding friction plate on the front side base in the jacking direction. The bottom surface of the support plate is spaced and non-contacted with the lower seat side sliding surface in the height direction, thereby reserving a protective operating space for the jacking sliding friction plate on the front side base in the jacking direction, that is, it will not hinder the covering and protection of the jacking sliding friction plate on the front side base in the jacking direction. At the same time, the support plate forms a cantilever extension at the jacking front end of the saddle. The extension structure can be used as a support platform for construction workers to step on, and the construction workers' active stepping force will not be transmitted to the lower seat side sliding surface to be pushed. Therefore, under the premise that the above-mentioned technical measures do not hinder the covering and protection of the pushing sliding friction plate on the front side base of the pushing advancing direction, a supporting platform for construction workers to move and step on is established through the supporting plate at the pushing front end of the saddle. On the one hand, it can effectively avoid the phenomenon of accidental stepping on the side sliding surface of the seat, which is conducive to the reliable protection of the pushing sliding friction plate on the front side base of the pushing advancing direction; on the other hand, it is conducive to the safe movement of construction workers on the supporting platform formed by the supporting plate, thereby ensuring the safety of construction workers and reducing the difficulty of construction technology.

[0013] As one of the preferred solutions, the support plates are two plates arranged at intervals along the transverse width direction of the saddle, and the two support plates are arranged and fixed corresponding to the two side edges of the transverse width direction of the saddle;

[0014] At least one stepping panel for construction workers to walk on is laid between the top sides of the two support plates.

[0015] The above-mentioned technical measures use two support plates as the beam body of the support platform and use the tread panel to ensure that the support platform is completely established. On the one hand, it is conducive to simplifying the connection structure between the support platform and the front end of the cable saddle jacking, which is convenient for connection and forming, and also convenient for later dismantling. On the premise of meeting the use requirements, it has the technical characteristics of simple structure and easy operation; on the other hand, it reduces the interference of the support plate on the jacking sliding friction plate protecting the operating space on the front side base of the jacking advancing direction, that is, the hollow area between the two support plates (on the premise that the tread panel is removed) can be used for laying, covering and removing the protective pads.

[0016] Furthermore, a plurality of tread panels are laid between the top sides of the two support plates, each tread panel is a long strip structure, and the tread panels are laid side by side in close proximity along the outer extension direction of the support plates;

[0017] Each tread panel is a thin steel plate structure and is fixedly connected to the two support plates by detachable screws.

[0018] The treading panel of the above technical measures is conducive to disassembly and removal, that is, it can be flexibly removed piece by piece as the saddle is pushed forward on the base.

[0019] Furthermore, the root width of the support plate is greater than the outer end width, and the contour structure of the support plate in the top view direction is a trapezoid. The support plate of this technical measure, on the one hand, simplifies the connection structure with the front end of the cable saddle push, which is conducive to increasing the connection surface with the front end of the cable saddle push, ensuring the rigidity and stability of its cantilever support structure; on the other hand, through the gradual hollow area between the two support plates, the protection operation space of the push sliding friction plate below is optimized and increased, which is conducive to the laying, covering and removal of the pads.

[0020] As one of the preferred solutions, the support plate is fixedly connected to the push front end of the pre-biased saddle through a plurality of detachable connecting bolts;

[0021] During or after the jacking construction of the saddle, the support plate is removed from the saddle by disassembling the connecting bolts.

[0022] Furthermore, the plurality of connecting bolts are arranged in a rectangular array structure of multiple rows and columns at the connection between the support plate and the saddle.

[0023] Furthermore, the support plate is fixedly connected to the upper plate of the saddle, and the upper part of the pushing front end of the upper plate has a positioning stop with a concave structure;

[0024] The support plate is detachably fixedly connected to the positioning stop of the upper bearing plate by a plurality of connecting bolts;

[0025] A saddle side sliding surface is formed on the bottom surface of the upper deck, and there is a height difference between the saddle side sliding surface and the bottom surface of the support plate.

[0026] The connection structure between the support plate and the front end of the cable saddle push of the above technical measures facilitates the assembly and disassembly of the support plate at the front end of the cable saddle push. Compared with the integral forming structure of the support plate on the upper plate, this split combination structure is conducive to the easy and high-quality processing and forming of the support plate and the upper plate under the premise of ensuring the strength of the forming structure, and is also conducive to transportation and installation at the bottom of the cable saddle, that is, the split forming structure is convenient for processing, transportation, and installation operations, especially the support plate does not participate in the push friction process, and the technical requirements for forming accuracy are low; at the same time, after the push construction is completed, this split combination structure is more conducive to the disassembly and removal of the support plate, reducing the technical difficulty of disassembly and removal.

[0027] As one of the preferred solutions, the saddle side sliding surface at the bottom of the saddle is a stainless steel plate formed structure;

[0028] The seat side sliding surface is a polytetrafluoroethylene plate molding structure.

[0029] As one of the preferred solutions, a plurality of wooden blocks covering the seat side sliding surface are laid on the seat side sliding surface at the pushing front end of the pre-biased saddle, and some or all of these wooden blocks are located under the support plate and can be removed one by one along with the pushing process.

[0030] The beneficial technical effect of the utility model is as follows: the above technical measures are aimed at the particularity of the pre-biased jacking construction work of the suspension bridge saddle, and a support plate extending outward is connected at the jacking front end of the saddle to form a clearance fit with the jacking sliding friction plate on the front side base in the jacking advancing direction. The bottom side surface of the support plate is spaced and non-contacted with the lower seat side sliding surface in the height direction, thereby reserving a protective operating space for the jacking sliding friction plate on the front side base in the jacking advancing direction, that is, it will not hinder the covering and protection of the jacking sliding friction plate on the front side base in the jacking advancing direction. At the same time, the support plate forms a cantilever extension at the jacking front end of the saddle, and the extension structure can be used as a support platform for construction personnel to step on, and the construction personnel's active stepping force will not be transmitted to the lower seat side sliding surface to be pushed. Therefore, under the premise that the above-mentioned technical measures do not hinder the covering and protection of the pushing sliding friction plate on the front side base of the pushing advancing direction, a supporting platform for construction workers to move and step on is established through the supporting plate at the pushing front end of the saddle. On the one hand, it can effectively avoid the phenomenon of accidental stepping on the side sliding surface of the seat, which is conducive to the reliable protection of the pushing sliding friction plate on the front side base of the pushing advancing direction; on the other hand, it is conducive to the safe movement of construction workers on the supporting platform formed by the supporting plate, thereby ensuring the safety of construction workers and reducing the difficulty of construction technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the utility model.

[0032] Figure 2 for Figure 1 Side view of.

[0033] Figure 3 for Figure 2 Cross-sectional view of the local A in the figure.

[0034] Figure 4 for Figure 1 The utility model is shown in a usage state and a structural schematic diagram.

[0035] Figure 5 for Figure 1 The second structural diagram of the utility model in use state is shown.

[0036] Figure 6 This is another structural schematic diagram of the utility model.

[0037] The meaning of the codes in the figure: 1—upper plate; 2—support plate; 3—connecting bolts; 4—stainless steel plate; 5—stepping panel; 6—pads. DETAILED DESCRIPTION

[0038] The utility model relates to an auxiliary structure for the jacking construction of a suspension bridge saddle, specifically a jacking sliding friction pair protection structure for the pre-biased jacking construction of a suspension bridge saddle. The main technical solution of the utility model is described in detail below in combination with multiple embodiments. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The technical solution of the utility model is clearly and in detail explained; Example 2 is combined with the accompanying drawings of the specification - that is, Figure 6 The technical solution of the utility model is clearly and in detail explained; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of embodiment 1 or embodiment 2.

[0039] 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 in the prior art. In addition, the expressions "approximately" and "substantially" in the following text regarding quantity or matching relationship mean that reasonable assembly errors and processing errors in the industry are allowed to exist, and do not literally express absolute quantity or matching relationship.

[0040] Example 1

[0041] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model is a sliding surface (pushing sliding friction surface on the base) protection structure for pre-biased jacking construction of suspension bridge saddles, which includes two support plates 2 connected to the jacking front end of the upper bearing plate 1 at the bottom of the saddle.

[0042] Specifically, the root width of each support plate 2 is greater than the outer end width, and its outline structure in the top view is a right-angle trapezoidal shape. The two support plates 2 are used to be connected to the top push front end of the upper deck 1 in a spacing arrangement structure along the lateral width direction of the saddle, and the connection position of each support plate 2 at the top push front end of the upper deck 1 is close to the corresponding side edge.

[0043] At the upper part of the two side edges of the upper support plate 1 pushing the front end, stepped positioning stoppers are formed with downward concave structures. Six bolt holes are opened in a rectangular array of two rows (corresponding to the longitudinal direction of the saddle) and three columns (corresponding to the transverse direction of the saddle) on each positioning stopper.

[0044] The roots of the two support plates 2 are correspondingly located on the positioning stoppers on both sides of the top push front end of the upper panel 1. The support plates 2 that are in place: the outer edges are basically flush with the corresponding side edges of the upper panel 1; the top surface is basically flush with the top surface of the upper panel 1; the bottom surface is higher than the bottom surface of the upper panel 1. Corresponding to the bolt holes opened in the positioning stoppers on the upper panel 1, the roots of the support plates 2 are also provided with six bolt holes that form a one-to-one correspondence with them. The two support plates 2 are detachably fixedly connected to the corresponding positioning stoppers of the upper panel 1 by six connecting bolts 3, and extend outward at the top push front end of the upper panel 1.

[0045] Based on the right-angled trapezoidal structure of the two support plates 2 and the spacing arrangement structure at the top pushing front end of the upper deck 1, the two support plates 2 form an approximately eight-shaped hollow space at the top pushing front end of the upper deck 1. The bottom of the upper deck 1 is connected with a stainless steel plate 4, and the bottom surface of the stainless steel plate 4 is used as the saddle side sliding surface of the bottom of the cable saddle to cooperate with the base for top pushing displacement. Therefore, there is a height difference between the stainless steel saddle side sliding surface at the bottom of the upper deck 1 and the bottom side surface of the support plate 2.

[0046] During the saddle push construction, the saddle is located at the pre-biased position of the base at the top of the main tower, and needs to be pushed toward the designed support position of the base. At this time, the support plate 2 forms an extension at the front end of the pre-biased saddle, and the extension is located above the seat side sliding surface (the push sliding friction plate on the base - polytetrafluoroethylene plate) in the push travel direction. Since the bottom surface of the support plate 2 is higher than the saddle side sliding surface at the bottom of the saddle, it forms a non-contact spacing matching relationship with the lower seat side sliding surface in the height direction. Within this matching spacing, multiple blocks of wood 6 covering the seat side sliding surface are laid out. Of course, multiple blocks of wood 6 covering the seat side sliding surface are also laid out on the seat side sliding surface at the front end of the support plate 2, so that the multiple blocks of wood 6 on the seat side sliding surface are partially located below the support plate 2; these wood 6 can be removed piece by piece as the saddle is pushed on the base.

[0047] The two cantilever support plates 2 of the above structure are used to establish a support platform at the front end of the saddle during the saddle pushing construction, so that construction workers can step on it in the pushing direction to avoid stepping on the side sliding surface of the seat below, that is, step on it at the front end of the pre-biased saddle without stepping on the side sliding surface of the seat through the support platform. Based on the spacing arrangement structure of the two support plates 2, in order to ensure that the support platform is fully formed, a plurality of tread panels 5 of thin steel plate structure are laid between the top sides of the two support plates 2. Each tread panel 5 is a long strip structure. These tread panels 5 are laid side by side in close proximity along the outer extension direction of the support plate 2. The two ends of each tread panel 5 are fixedly connected to the two support plates 2 by detachable screws. These tread panels 5 can be removed one by one as the saddle is pushed on the base.

[0048] The two support plates 2, or the support platform built on the two support plates 2, are removed from the upper deck 1 by disassembling the connecting bolts 3 during or after the saddle is pushed (usually after completion), which is easier and more convenient than overall cutting.

[0049] Example 2

[0050] See also Figure 6 As shown, the utility model is a sliding surface (pushing sliding friction surface on the base) protection structure for pre-biased jacking construction of suspension bridge saddles, which includes two support plates 2 formed at the jacking front end of the upper support plate 1 at the bottom of the saddle in an integrally formed structure.

[0051] Specifically, the root width of each support plate 2 is greater than the outer end width, and its outline structure in the top view direction is a right-angled trapezoid. The molding position of each support plate 2 at the front end of the upper plate 1 is close to the corresponding side edge.

[0052] In the integrally formed structure of the two support plates 2 and the upper deck 1, the outer edges are substantially flush with the corresponding side edges of the upper deck 1; the top surface is substantially flush with the top surface of the upper deck 1; and the bottom surface is higher than the bottom surface of the upper deck 1. The two support plates 2 extend outward at the top push front end of the upper deck 1.

[0053] Based on the right-angled trapezoidal structure of the two support plates 2 and the spacing arrangement structure at the top pushing front end of the upper deck 1, the two support plates 2 form an approximately eight-shaped hollow space at the top pushing front end of the upper deck 1. The bottom of the upper deck 1 is connected with a stainless steel plate 4, and the bottom surface of the stainless steel plate 4 is used as the saddle side sliding surface of the bottom of the cable saddle to cooperate with the base for top pushing displacement. Therefore, there is a height difference between the stainless steel saddle side sliding surface at the bottom of the upper deck 1 and the bottom side surface of the support plate 2.

[0054] During the saddle push construction, the saddle is located at the pre-biased position of the base at the top of the main tower, and needs to be pushed toward the designed support position of the base. At this time, the support plate 2 forms an extension at the front end of the pre-biased saddle, and the extension is located above the seat side sliding surface (the push sliding friction plate on the base - polytetrafluoroethylene plate) in the push travel direction. Since the bottom surface of the support plate 2 is higher than the saddle side sliding surface at the bottom of the saddle, it forms a non-contact spacing matching relationship with the lower seat side sliding surface in the height direction. Within this matching spacing, multiple blocks of wood covering the seat side sliding surface are laid out. Of course, multiple blocks of wood covering the seat side sliding surface are also laid out on the seat side sliding surface at the front end of the support plate 2, so that the multiple blocks of wood on the seat side sliding surface are partially located below the support plate 2; these wood blocks can be removed piece by piece as the saddle is pushed on the base.

[0055] The two cantilever support plates 2 of the above structure are used to establish a support platform at the front end of the saddle during the saddle pushing construction, so that construction workers can step on it in the pushing direction to avoid stepping on the side sliding surface of the seat below, that is, step on it at the front end of the pre-biased saddle without stepping on the side sliding surface of the seat through the support platform. Based on the spacing arrangement structure of the two support plates 2, in order to ensure that the support platform is fully formed, a plurality of treading panels of thin steel plate structure are laid between the top sides of the two support plates 2. Each treading panel is a long strip structure. These treading panels are laid side by side in close proximity along the outer extension direction of the support plate 2. The two ends of each treading panel are fixedly connected to the two support plates 2 by detachable screws. These treading panels can be removed one by one as the saddle is pushed on the base.

[0056] The two support plates 2, or the support platform built based on the two support plates 2, are removed by integral cutting during or after the jacking construction of the saddle (usually after completion).

[0057] Example 3

[0058] The utility model is a sliding surface (pushing sliding friction surface on a base) protection structure for pre-biased jacking construction of a suspension bridge saddle, which comprises two supporting plates formed at the jacking front end of an upper bearing plate at the bottom of the saddle by a welding structure.

[0059] Specifically, the root width of each support plate is greater than the outer end width, and its outline structure in the top view is a right-angle trapezoidal shape. The two support plates are used to be connected to the top push front end of the upper deck in a spacing arrangement structure along the lateral width direction of the saddle, and the connection position of each support plate at the top push front end of the upper deck is close to the corresponding side edge.

[0060] At the upper part of the two side edges of the front end of the upper deck, there are stepped positioning stops formed with a downward concave structure. The roots of the above two support plates are correspondingly located on the positioning stops on both sides of the front end of the upper deck. The support plates that are in place: the outer edges are basically flush with the corresponding side edges of the upper deck; the top side surface is basically flush with the top side surface of the upper deck; the bottom side surface is higher than the bottom side surface of the upper deck. The two support plates are fixedly connected to the corresponding positioning stops of the upper deck by welding, and the two support plates extend outward at the front end of the upper deck.

[0061] Based on the right-angle trapezoidal structure of the two support plates and the spacing arrangement structure at the top push front end of the upper deck, the two support plates form an approximately figure-eight hollow space at the top push front end of the upper deck. A stainless steel plate is connected to the bottom of the upper deck, and the bottom surface of the stainless steel plate is used as the saddle side sliding surface for the bottom of the cable saddle to cooperate with the base for top push displacement. Therefore, there is a height difference between the stainless steel saddle side sliding surface at the bottom of the upper deck and the bottom side surface of the support plate.

[0062] During the saddle push construction, the saddle is located at the pre-biased position of the base at the top of the main tower, and needs to be pushed toward the designed support position of the base. At this time, the support plate forms an extension at the front end of the pre-biased saddle, and the extension is above the seat side sliding surface (the push sliding friction plate on the base - polytetrafluoroethylene plate) in the push direction. Since the bottom surface of the support plate is higher than the saddle side sliding surface at the bottom of the saddle, it forms a non-contact spacing matching relationship with the lower seat side sliding surface in the height direction. Within this matching spacing, multiple blocks of wood covering the seat side sliding surface are laid out. Of course, multiple blocks of wood covering the seat side sliding surface are also laid out on the seat side sliding surface at the front end of the support plate, so that the multiple blocks of wood on the seat side sliding surface are partially located below the support plate; these blocks of wood can be removed piece by piece as the saddle is pushed on the base.

[0063] The two cantilever support plates of the above structure are used to establish a support platform at the front end of the saddle during the saddle pushing construction, so that construction workers can step on it in the pushing direction to avoid stepping on the side sliding surface of the seat below, that is, step on it at the front end of the pre-biased saddle without stepping on the side sliding surface of the seat through the support platform. Based on the spacing arrangement structure of the two support plates, in order to ensure that the support platform is fully formed, a plurality of tread panels of thin steel plate structure are laid between the top sides of the two support plates. Each tread panel is a long strip structure. These tread panels are laid side by side in close proximity along the outer extension direction of the support plates. The two ends of each tread panel are fixedly connected to the two support plates by detachable screws. These tread panels can be removed one by one as the saddle is pushed on the base.

[0064] The two support plates, or the support platform built based on the two support plates, are removed by integral cutting during or after the jacking construction of the saddle (usually after completion).

[0065] Example 4

[0066] The utility model is a sliding surface (pushing sliding friction surface on a base) protection structure for pre-biased jacking construction of a suspension bridge saddle, which comprises a supporting plate connected to the jacking front end of an upper bearing plate at the bottom of the saddle.

[0067] Specifically, the support plate is an isosceles trapezoidal structure with a root width greater than an outer end width.

[0068] At the upper part of the middle area of ​​the front end of the upper support plate, a stepped positioning stop is formed with a downward concave structure, and thirty bolt holes are opened on the positioning stop in a rectangular array of ten rows (corresponding to the longitudinal direction of the saddle) and three columns (corresponding to the transverse direction of the saddle).

[0069] The root of the support plate corresponds to the positioning stop at the front end of the upper deck. The support plate that is in place has: the outer edge is located inside the corresponding side edge of the upper deck; the top surface is basically flush with the top surface of the upper deck; the bottom surface is higher than the bottom surface of the upper deck. Corresponding to the bolt holes opened in the positioning stop on the upper deck, the root of the support plate is also provided with thirty bolt holes that form a one-to-one correspondence with them.

[0070] The support plate is detachably fixed to the positioning stop of the upper plate by thirty connecting bolts, and extends outward at the top push front end of the upper plate. The bottom of the upper plate is connected with a stainless steel plate, and the bottom surface of the stainless steel plate is used as the saddle side sliding surface of the cable saddle bottom to cooperate with the base for top push displacement. Therefore, there is a height difference between the stainless steel saddle side sliding surface at the bottom of the upper plate and the bottom surface of the support plate.

[0071] During the saddle push construction, the saddle is located at the pre-biased position of the base at the top of the main tower, and needs to be pushed toward the designed support position of the base. At this time, the support plate forms an extension at the front end of the pre-biased saddle, and the extension is above the seat side sliding surface (the push sliding friction plate on the base - polytetrafluoroethylene plate) in the push direction. Since the bottom surface of the support plate is higher than the saddle side sliding surface at the bottom of the saddle, it forms a non-contact spacing matching relationship with the lower seat side sliding surface in the height direction. Within this matching spacing, multiple blocks of wood covering the seat side sliding surface are laid out. Of course, multiple blocks of wood covering the seat side sliding surface are also laid out on the seat side sliding surface at the front end of the support plate, so that the multiple blocks of wood on the seat side sliding surface are partially located below the support plate; these blocks of wood can be removed piece by piece as the saddle is pushed on the base.

[0072] The cantilever support plate of the above structure is used to establish a support platform at the front end of the saddle during the saddle pushing construction, so that construction workers can step on it in the pushing direction to avoid stepping on the side sliding surface of the seat below, that is, through the support platform, they can step on the front end of the pre-biased saddle without stepping on the side sliding surface of the seat.

[0073] The support plate is removed from the upper deck by disassembling the connecting bolts on the upper deck during or after the saddle is pushed (usually after completion), which is easier and more convenient than overall cutting.

[0074] Example 5

[0075] The other contents of this embodiment are the same as those of Embodiment 1, 2, 3 or 4, except that:

[0076] The support plate is a long rectangular structure.

[0077] The above embodiments are only used to illustrate the present invention, but not to limit it.

[0078] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the above embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. For example, the push sliding friction plate on the base may be a copper-based composite slide plate (SF-I), an ultra-high performance polytetrafluoroethylene slide plate (UHPF), a modified ultra-high molecular weight polyethylene slide plate (M-UHMWPE), a modified polytetrafluoroethylene slide plate (M-PTFE), etc. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. A sliding surface protection structure for pre-biased jacking construction of a suspension bridge saddle, characterized in that: The protective structure comprises a support plate (2) connected to the pushing front end of the pre-biased cable saddle, the support plate (2) extending outward from the pushing front end of the pre-biased cable saddle and located above the seat side sliding surface in the pushing travel direction; The bottom surface of the support plate (2) is higher than the saddle side sliding surface at the bottom of the cable saddle, and forms a non-contact spacing matching relationship with the lower seat side sliding surface in the height direction; The support plate (2) is used during the saddle pushing construction to allow construction workers to step on and pass through the pushing front end of the pre-biased saddle without stepping on the seat side sliding surface.

2. According to claim 1, the sliding surface protection structure for the pre-biased jacking construction of the suspension bridge saddle is characterized by: The support plates (2) are two plates arranged at intervals along the transverse width direction of the saddle, and the two support plates (2) are arranged and fixed corresponding to the two side edges of the transverse width direction of the saddle; At least one stepping panel (5) for construction workers to walk on is laid between the top sides of the two support plates (2).

3. The sliding surface protection structure for the pre-biased jacking construction of the suspension bridge saddle according to claim 2 is characterized by: A plurality of tread panels (5) are laid between the top sides of the two support plates (2), each tread panel (5) being a long strip structure, and the tread panels (5) are laid side by side in close proximity along the outer extension direction of the support plates (2); Each tread panel (5) is a thin steel plate structure and is fixedly connected to the two support plates (2) by means of detachable screws.

4. The sliding surface protection structure for the pre-biased jacking construction of the suspension bridge saddle according to claim 2 is characterized by: The width of the root of the support plate (2) is greater than the width of the outer end, and the outline structure of the support plate (2) in a top view is a trapezoidal shape.

5. The sliding surface protection structure for the pre-biased jacking construction of the suspension bridge saddle according to claim 1, 2 or 4, characterized in that: The support plate (2) is fixedly connected to the push front end of the pre-biased cable saddle via a plurality of detachable connecting bolts (3); During or after the jacking construction of the cable saddle is completed, the support plate (2) is removed from the cable saddle by disassembling the connecting bolts (3).

6. The sliding surface protection structure for the pre-biased jacking construction of the suspension bridge saddle according to claim 5 is characterized by: The plurality of connection bolts (3) are arranged in a rectangular array structure of multiple rows and columns at the connection between the support plate (2) and the saddle.

7. The sliding surface protection structure for the pre-biased jacking construction of the suspension bridge saddle according to claim 5 is characterized by: The support plate (2) is fixedly connected to the upper support plate (1) of the saddle, and the upper part of the pushing front end of the upper support plate (1) has a positioning stop with a concave structure; The support plate (2) is detachably fixedly connected to the positioning stop of the upper bearing plate (1) via a plurality of connecting bolts (3); A saddle side sliding surface is formed on the bottom surface of the upper bearing plate (1), and there is a height difference between the saddle side sliding surface and the bottom surface of the support plate (2).

8. The sliding surface protection structure for the pre-biased jacking construction of a suspension bridge saddle according to claim 1 is characterized by: The saddle side sliding surface at the bottom of the cable saddle is a stainless steel plate (4) formed structure; The seat side sliding surface is a polytetrafluoroethylene plate molding structure.

9. The sliding surface protection structure for the pre-biased jacking construction of a suspension bridge saddle according to claim 1, characterized in that: A plurality of pads (6) covering the seat side sliding surface are laid on the seat side sliding surface at the pushing front end of the pre-biased saddle, and these pads (6) are partially or completely located below the support plate (2) and can be removed piece by piece as the pushing progresses.

Images