Device and method for quickly positioning cable saddles for cable-stayed bridges

Abstract

The present invention relates to the technical field of bridge construction, and in particular to a device and method for quickly positioning a split-wire saddle for a cable-stayed bridge. The device comprises three layers of steel plates, steel bars, baffles, hinges, jacks, and support devices. The middle and lower steel plates are consolidated into a whole. The upper steel plate is hinged to the middle steel plate. The baffle is welded to the upper steel plate. The lower jack is placed on the lower steel plate and connected to the upper steel plate. The middle jack is placed in the longitudinal and transverse grooves of the middle steel plate. The top of the middle jack is connected to the support device, and the support device consists of a ball joint and a limit block. The present invention places the cable tower segment on the upper steel plate, adjusts the lifting and lowering of the lower jack to simulate any inclination angle of the cable tower segment in the actual cable tower, fixes the split-wire saddle through the support device of the middle jack, adjusts the lifting and position of the middle jack to achieve precise positioning of different types of cable saddles in the cable tower segment and quickly determine the spatial position of the saddle exit point, with a high reuse rate.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a device and method for quickly positioning a cable-stayed bridge saddle. Background Art

[0002] Cable saddles are essential support devices for cable-stayed bridges as they pass through towers. Tower construction involves first assembling the tower segments, followed by pouring concrete within the segments. Cable saddles are pre-buried and installed within the tower segments and are non-replaceable components. To accommodate the landscape and meet design requirements, cable-stayed bridge towers come in a variety of shapes, and the spatial relative positions of towers and cable saddles differ significantly. Even within the same tower, the length and curvature of the cable saddles vary, and the relative spatial positions of the tower and each cable saddle naturally vary. Any deviation between the actual installation position of the cable saddles and the design will inevitably affect the stress on the cables and the entire bridge, and may even severely shorten the service life of the cables and accelerate the degradation of the overall bridge's service life.

[0003] At present, the main method for positioning the split cable saddle in a cable tower segment is to first erect a rigid steel skeleton in the cable tower segment on the ground, then hoist and splice the cable tower segment, and finally hoist the split cable saddle into the cable tower segment for positioning and installation. This method is difficult to operate at high altitude, and the position adjustment of the split cable saddle in the cable tower segment is extremely inconvenient and the positioning accuracy is not high. In addition, if the split cable saddle is first positioned and installed in the cable tower steel shell on the ground, and then the split cable saddle and the cable tower segment are hoisted and spliced as a whole, this operation method will require cumbersome spatial coordinate conversion of the coordinates of each position of the split cable saddle due to the different inclination angles between the cable tower steel shell and the actual installation position. At the same time, the split cable saddle will be cut more frequently at the exit point of the cable tower segment, seriously affecting the appearance and integrity of the cable tower segment. Summary of the Invention

[0004] The present invention aims to at least improve one of the technical problems existing in the prior art. To this end, the present invention provides a device and method for quickly positioning a split-wire saddle for a cable-stayed bridge.

[0005] According to the first embodiment of the present invention, a quick positioning device for a cable-stayed bridge split cable saddle comprises:

[0006] An upper steel plate, a middle steel plate and a lower steel plate are sequentially arranged, wherein the middle steel plate and the lower steel plate are consolidated into a whole by steel bars, and the upper steel plate and the middle steel plate are movably connected by hinges, wherein the upper steel plate is a U-shaped plate after cutting the middle rectangle, and the middle steel plate is reserved with cross-intersecting transverse grooves and longitudinal grooves;

[0007] a baffle fixedly mounted on the inner edge of the upper steel plate near the hinge connection;

[0008] A lower jack, wherein the lower jack is arranged on the upper surface of the lower steel plate and the piston rod of the lower jack is connected to the upper steel plate;

[0009] A plurality of middle-layer jacks, wherein the middle-layer jacks are arranged in the transverse grooves and the longitudinal grooves of the middle-layer steel plate;

[0010] A supporting device, the supporting device comprising a limit block and a spherical joint movably connected, the spherical joint base being connected to the piston rod of the middle jack;

[0011] A wire splitting saddle, the wire splitting saddle is placed in the limiting block to adjust and limit the position;

[0012] The steel shell of the cable tower is placed on the upper steel plate. By adjusting the lifting and lowering of the lower jack, the angle between the upper steel plate and the middle steel plate is adjusted to simulate the inclination angle of the cable tower segment in the actual cable tower. By adjusting the position of the middle jack in the longitudinal groove and the transverse groove, the precise positioning of the wire saddle in the steel shell of the cable tower is achieved.

[0013] According to an embodiment of the present invention, a rapid positioning device for a cable-stayed bridge split-wire saddle is implemented by placing the steel shell of a cable tower on an upper steel plate, adjusting the lifting and lowering of the lower-layer jack to simulate the arbitrary inclination angle of a cable tower segment in an actual cable tower, fixing the split-wire saddle via a support device of a middle-layer jack, and adjusting the lifting and position of the middle-layer jack to achieve precise positioning of different types of saddles within the cable tower segment and quickly determine the spatial position of the saddle exit point. The rapid positioning device for a cable-stayed bridge split-wire saddle according to an embodiment of the present invention has a simple structure, is fast and efficient, has a high reuse rate, and is suitable for spatial positioning of saddles within different types of cable towers, thus having broad application prospects in actual engineering.

[0014] In a possible implementation of the first aspect, the baffle is vertically welded to the upper steel plate, and the baffle is parallel to the axis of the hinge installation position, which is used to prevent the steel shell of the cable tower from sliding down and affecting the positioning effect.

[0015] In a possible implementation manner of the first aspect, the transverse groove of the middle steel plate is perpendicular to the baffle, and the longitudinal groove of the middle steel plate is parallel to the baffle.

[0016] In a possible implementation of the first aspect, the number of middle-layer jacks located in the transverse groove of the middle-layer steel plate is not less than 1, and the number of middle-layer jacks located in the longitudinal groove of the middle-layer steel plate is not less than 2, so as to facilitate the precise positioning of different types of wire saddles in the cable tower segment by adjusting the positions of the middle-layer jacks in the longitudinal groove and the transverse groove.

[0017] In a possible implementation manner of the first aspect, the midpoint of the boundary line between the upper steel plate and the baffle is located on the center line of the transverse groove of the middle steel plate.

[0018] In a possible implementation of the first aspect, an angle measuring device is provided at the connection between the upper steel plate and the middle steel plate, so that the inclination angle can be measured in time when adjusting the inclination angle of the simulated steel cable tower segment in the actual cable tower.

[0019] In a possible implementation of the first aspect, the area of the middle steel plate is smaller than that of the upper steel plate, so that the lower jack can connect the upper and lower steel plates to simulate the adjustment of the inclination angle of the steel tower segment in the actual tower.

[0020] In a possible implementation of the first aspect, the total number of the lower layer jacks is three, and they are all respectively arranged at the edge of the lower layer steel plate away from the hinge end, so as to facilitate uniform force application and more accurate positioning of the wire saddle.

[0021] In a possible implementation of the first aspect, the steel bars are distributed in a matrix, so as to facilitate more uniform connection between the middle steel plate and the lower steel plate.

[0022] According to the second embodiment of the present invention, a method for quickly positioning a cable-stayed bridge saddle includes:

[0023] Step S100: construct a fast positioning scene for the cable-stayed bridge cable saddle, and define the midpoint coordinates of the lower edge of the inner side of the steel shell of any cable tower as ( x 0, y 0, z 0);

[0024] Step S200: Establish the midpoint of the intersection of the upper steel plate and the baffle as the reference point, place the cable tower steel shell on the upper steel plate, adjust the midpoint of the bottom side of the cable tower steel shell to align with the reference point, and adjust the angle between the upper steel plate and the middle steel plate by adjusting the lifting and lowering of the lower jack to simulate the inclination angle of the cable tower segment in the actual cable tower;

[0025] Step S300, the arc top vertex of the split wire saddle is placed in the middle jack support device of the middle steel plate transverse groove. At this time, the reference point is located on the center line of the middle steel plate transverse groove. The theoretical coordinates of the arc top vertex of the split wire saddle are known to be ( x 3. y 3. z 3), then the position of the middle jack base in the transverse groove of the middle steel plate is from the reference point to | x 3- x 0|, the top of the middle jack needs to rise to | z 3- z0|height;

[0026] Step S400, place the two ends of the split wire saddle in the two middle jack support devices of the longitudinal groove of the middle steel plate, and fix the split wire saddle by the limit blocks of the middle jack support device, wherein the longitudinal groove is parallel to the baffle and the spacing is L , it is known that when x = L The theoretical coordinates of the clamping points at both ends of the time-sharing saddle are ( L , y 1, z 1) and ( L ,- y 1, z 2), then the two middle jack bases in the longitudinal groove are placed at ( L , y 1), ( L ,- y 1) The distance between the two middle jacks in the longitudinal groove is 2 y 1. The tops need to rise to | z 1- z 0| and| z 2- z 0|height;

[0027] Step S500: After adjusting the positions and lifting heights of the various jacks, the split cable saddle is positioned within the steel tower shell. A steel frame is welded inside the steel tower shell to secure the split cable saddle to the tower shell. The outer corners of the tower shell are cut to expose the two ends of the split cable saddle, forming the exit point of the split cable saddle from the tower.

[0028] In step S600, the cable saddle and the steel shell of the cable tower are welded and positioned with each other and then transported to the construction site for hoisting and splicing, thus completing the rapid positioning process of the cable saddle of the cable-stayed bridge.

[0029] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 2 is a schematic structural diagram of a quick positioning device for a cable-stayed bridge split cable saddle according to an embodiment of the present invention;

[0032] Figure 2 2. It is a schematic diagram of a cable tower segment of a cable-stayed bridge split cable saddle rapid positioning device according to an embodiment of the present invention;

[0033] Figure 3 2. It is a schematic diagram of the installation of the steel shell of the cable tower of the cable-stayed bridge wire saddle rapid positioning device according to an embodiment of the present invention;

[0034] Figure 4 2. It is a schematic diagram of positioning and installing a split cable saddle of a cable-stayed bridge split cable saddle quick positioning device according to an embodiment of the present invention;

[0035] Figure 5 2 is a schematic structural diagram of positioning of a split cable saddle tower exit point of a cable-stayed bridge split cable saddle rapid positioning device according to an embodiment of the present invention;

[0036] Figure 6 2. It is a schematic diagram of the ball joint structure of the quick positioning device for the split cable saddle of a cable-stayed bridge according to an embodiment of the present invention;

[0037] Figure 7 2. It is a schematic diagram of the hinge structure of the quick positioning device for the split cable saddle of a cable-stayed bridge according to an embodiment of the present invention;

[0038] Figure 8 Schematic diagram of a jack of a quick positioning device for a cable-stayed bridge wire saddle according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] Upper steel plate 1, lower jack 2, support device 3, baffle 4, hinge 5, middle steel plate 6, middle jack 7, lower steel plate 8, steel bar 9, wire saddle 10, cable tower steel shell 11;

[0041] Limiting block 31 and ball joint 32. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Example 1

[0046] See Figures 1 to 8 As shown, this embodiment provides a cable-stayed bridge split cable saddle rapid positioning device, which includes:

[0047] An upper steel plate 1, a middle steel plate 6 and a lower steel plate 8 are sequentially arranged, wherein the middle steel plate 6 and the lower steel plate 8 are consolidated into a whole by a steel bar 9, and the upper steel plate 1 and the middle steel plate 6 are movably connected by a hinge 5, wherein the upper steel plate 1 is a U-shaped plate after cutting the middle rectangle, and the middle steel plate 6 is reserved with cross-intersecting transverse grooves and longitudinal grooves;

[0048] A baffle 4 is fixedly mounted on the inner edge of the upper steel plate 1 near the connection point of the hinge 5;

[0049] The lower jack 2 is arranged on the upper surface of the lower steel plate 8 and the piston rod of the lower jack 2 is connected to the upper steel plate 1;

[0050] A plurality of middle-layer jacks 7, wherein the middle-layer jacks 7 are arranged in the transverse grooves and the longitudinal grooves of the middle-layer steel plate 6;

[0051] A support device 3, comprising a limit block 31 and a spherical joint 32 movably connected, wherein the base of the spherical joint 32 is connected to the piston rod of the middle jack 7;

[0052] The splitting cable saddle 10 is placed in the limiting block 31 for position adjustment and limitation;

[0053] The steel shell 11 of the cable tower is placed on the upper steel plate 1. By adjusting the lifting and lowering of the lower jack 2, the angle between the upper steel plate 1 and the middle steel plate 6 is adjusted to simulate the inclination angle of the cable tower segment in the actual cable tower. By adjusting the position of the middle jack 7 in the longitudinal groove and the transverse groove, the precise positioning of the wire saddle 10 in the steel shell 11 of the cable tower is achieved.

[0054] According to an embodiment of the present invention, a rapid positioning device for a cable-stayed bridge split-wire saddle is implemented by placing the steel shell of a cable tower on an upper steel plate, adjusting the lifting and lowering of the lower-layer jack to simulate the arbitrary inclination angle of a cable tower segment in an actual cable tower, fixing the split-wire saddle via a support device of a middle-layer jack, and adjusting the lifting and position of the middle-layer jack to achieve precise positioning of different types of saddles within the cable tower segment and quickly determine the spatial position of the saddle exit point. The rapid positioning device for a cable-stayed bridge split-wire saddle according to an embodiment of the present invention has a simple structure, is fast and efficient, has a high reuse rate, and is suitable for spatial positioning of saddles within different types of cable towers, thus having broad application prospects in actual engineering.

[0055] It should be noted that the baffle 4 is vertically welded to the upper steel plate 1 and is parallel to the axis where the hinge 5 is installed, so as to prevent the steel shell 11 of the cable tower from sliding down and affecting the positioning effect.

[0056] It should be noted that the transverse groove of the middle steel plate 6 is perpendicular to the baffle 4 , and the longitudinal groove of the middle steel plate 6 is parallel to the baffle 4 .

[0057] It should be noted that the number of middle-layer jacks 7 located in the transverse groove of the middle-layer steel plate 6 is not less than one, and the number of middle-layer jacks 7 located in the longitudinal groove of the middle-layer steel plate 6 is not less than two. This facilitates the precise positioning of different types of wire saddles 10 in the cable tower segment by adjusting the positions of the middle-layer jacks 7 in the longitudinal groove and the transverse groove.

[0058] It should be noted that the midpoint of the intersection line between the upper steel plate 1 and the baffle 4 is located on the center line of the transverse groove of the middle steel plate 6 .

[0059] It should be noted that an angle measuring device is provided at the connection between the upper steel plate 1 and the middle steel plate 6, so that the inclination angle can be measured in time when adjusting the inclination angle of the simulated steel cable tower segment in the actual cable tower.

[0060] It should be noted that the area of the middle steel plate 6 is smaller than that of the upper steel plate 1, which makes it easier for the lower jack 2 to connect the upper steel plate 1 and the lower steel plate 8, and simulates the adjustment of the inclination angle of the steel tower segment in the actual tower.

[0061] It should be noted that there are three lower jacks 2 in total, which are respectively arranged at the edge of the lower steel plate 8 away from the hinge 5 end, so as to facilitate uniform force application and more accurate positioning of the wire saddle.

[0062] It should be noted that the steel bars 9 are distributed in a matrix, so that the middle steel plate 6 and the lower steel plate 8 are connected more evenly.

[0063] Example 2

[0064] This embodiment provides a method for quickly positioning a cable-stayed bridge saddle, which includes:

[0065] Step S100: construct a fast positioning scene for the cable-stayed bridge cable saddle, and define the midpoint coordinates of the lower edge of the inner side of the steel shell of any cable tower as ( x 0, y 0, z 0);

[0066] Step S200: Establish the midpoint of the intersection of the upper steel plate and the baffle as the reference point, place the cable tower steel shell on the upper steel plate, adjust the midpoint of the bottom side of the cable tower steel shell to align with the reference point, and adjust the angle between the upper steel plate and the middle steel plate by adjusting the lifting and lowering of the lower jack to simulate the inclination angle of the cable tower segment in the actual cable tower;

[0067] Step S300: Place the arc top vertex of the split wire saddle in the middle jack support device of the transverse groove of the middle steel plate. The transverse groove is perpendicular to the baffle, and the reference point is located on the center line of the transverse groove of the middle steel plate. The theoretical coordinates of the arc top vertex of the split wire saddle are known to be ( x 3. y 3. z 3), then the position of the middle jack base in the transverse groove of the middle steel plate is from the reference point to | x 3- x 0|, the top of the middle jack needs to rise to | z 3- z 0|height;

[0068] Step S400, place the two ends of the split wire saddle in the two middle jack support devices of the longitudinal groove of the middle steel plate, and fix the split wire saddle by the limit blocks of the middle jack support device, wherein the longitudinal groove is parallel to the baffle and the spacing is L , it is known that when x = L The theoretical coordinates of the clamping points at both ends of the time-sharing saddle are ( L , y 1, z 1) and ( L ,- y 1, z 2), then the two middle jack bases in the longitudinal groove are placed at ( L , y 1), ( L ,- y 1) The distance between the two middle jacks in the longitudinal groove is 2 y 1. The tops need to rise to | z 1- z 0| and| z 2- z0|height;

[0069] Step S500: After adjusting the positions and lifting heights of the various jacks, the split cable saddle is positioned within the steel tower shell. A steel frame is welded inside the steel tower shell to secure the split cable saddle to the tower shell. The outer corners of the tower shell are cut to expose the two ends of the split cable saddle, forming the exit point of the split cable saddle from the tower.

[0070] In step S600, after the split cable saddle and the steel tower steel shell are welded and positioned to each other, the two can be transported as a whole to the construction site for hoisting and splicing, completing the rapid positioning process of the split cable saddle of the cable-stayed bridge.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to the invention.

[0072] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0073] Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Mentioning "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present embodiment application. The appearance of this phrase in various positions in the specification does not necessarily mean that they are all the same embodiments, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. It can be understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0074] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A quick positioning device for a cable-stayed bridge cable saddle, characterized in that: include: An upper steel plate (1), a middle steel plate (6) and a lower steel plate (8) are sequentially arranged, wherein the middle steel plate (6) and the lower steel plate (8) are consolidated into a whole by a steel bar (9), and the upper steel plate (1) and the middle steel plate (6) are movably connected by a hinge (5), wherein the upper steel plate (1) is a U-shaped plate after cutting the middle rectangle, and the middle steel plate (6) is reserved with a cross-shaped transverse groove and a longitudinal groove; a baffle (4), the baffle (4) being fixedly mounted on the inner edge of the upper steel plate (1) near the connection point of the hinge (5); A lower jack (2), wherein the lower jack (2) is arranged on the upper surface of the lower steel plate (8) and the piston rod of the lower jack (2) is connected to the upper steel plate (1); a plurality of middle-layer jacks (7), wherein the middle-layer jacks (7) are arranged in the transverse grooves and the longitudinal grooves of the middle-layer steel plate (6); A support device (3), the support device (3) comprising a limit block (31) and a spherical joint (32) movably connected, the base of the spherical joint (32) being connected to the piston rod of the middle jack (7); A wire splitting saddle (10), the wire splitting saddle (10) is placed in the limiting block (31) for position adjustment and limitation; The steel shell (11) of the cable tower is placed on the upper steel plate (1), and the angle between the upper steel plate (1) and the middle steel plate (6) is adjusted by adjusting the lifting and lowering of the lower jack (2) to simulate the inclination angle of the cable tower segment in the actual cable tower. The positioning of the wire saddle (10) in the steel shell (11) of the cable tower is achieved by adjusting the position of the middle jack (7) in the longitudinal groove and the transverse groove.

2. The cable-stayed bridge wire saddle rapid positioning device according to claim 1, characterized in that: The baffle (4) is vertically welded to the upper steel plate (1), and the baffle (4) is parallel to the axis of the hinge (5) installation position.

3. The cable-stayed bridge wire saddle rapid positioning device according to claim 1, characterized in that: The transverse groove of the middle steel plate (6) is perpendicular to the baffle (4), and the longitudinal groove of the middle steel plate (6) is parallel to the baffle (4).

4. The cable-stayed bridge wire saddle rapid positioning device according to claim 1, characterized in that: The number of the middle layer jacks (7) located in the transverse groove of the middle layer steel plate (6) is not less than one, and the number of the middle layer jacks (7) located in the longitudinal groove of the middle layer steel plate (6) is not less than two.

5. The cable-stayed bridge wire saddle rapid positioning device according to claim 1, characterized in that: The midpoint of the boundary line between the upper steel plate (1) and the baffle (4) is located on the center line of the transverse groove of the middle steel plate (6).

6. The cable-stayed bridge wire saddle rapid positioning device according to claim 5, characterized in that: An angle measuring device is provided at the connection between the upper steel plate (1) and the middle steel plate (6).

7. The cable-stayed bridge wire saddle rapid positioning device according to claim 6, characterized in that: The area of the middle steel plate (6) is smaller than the area of the upper steel plate (1).

8. The cable-stayed bridge split cable saddle rapid positioning device according to claim 1, characterized in that: The total number of the lower layer jacks (2) is three, and each of them is respectively arranged at the edge of the lower layer steel plate (8) away from the hinge (5) end.

9. The cable-stayed bridge split cable saddle rapid positioning device according to claim 1, characterized in that: The steel bars (9) are distributed in a matrix.

10. A method for quickly positioning a cable-stayed bridge cable saddle, characterized in that: Positioning is performed using the cable-stayed bridge split cable saddle rapid positioning device according to any one of claims 1 to 9, characterized in that it comprises: Step S100: construct a fast positioning scene for the cable-stayed bridge cable saddle, and define the midpoint coordinates of the lower edge of the inner side of the steel shell of any cable tower as ( x 0, y 0, z 0); Step S200: Establish the midpoint of the intersection of the upper steel plate and the baffle as the reference point, place the cable tower steel shell on the upper steel plate, adjust the midpoint of the bottom side of the cable tower steel shell to align with the reference point, and adjust the angle between the upper steel plate and the middle steel plate by adjusting the lifting and lowering of the lower jack to simulate the inclination angle of the cable tower segment in the actual cable tower; Step S300, the arc top vertex of the split wire saddle is placed in the middle jack support device of the middle steel plate transverse groove. At this time, the reference point is located on the center line of the middle steel plate transverse groove. The theoretical coordinates of the arc top vertex of the split wire saddle are known to be ( x 3. y 3. z 3), then the position of the middle jack base in the transverse groove of the middle steel plate is from the reference point to | x 3- x 0|, the top of the middle jack needs to rise to | z 3- z 0|height; Step S400, place the two ends of the split wire saddle in the middle jack support device of the longitudinal groove of the middle steel plate, and fix the split wire saddle by the limit block of the middle jack support device, wherein the longitudinal groove is parallel to the baffle and the spacing is L , it is known that when x = L The theoretical coordinates of the clamping points at both ends of the time-sharing saddle are ( L , y 1, z 1) and ( L ,- y 1, z 2), then the two middle jack bases in the longitudinal groove are placed at ( L , y 1), ( L ,- y 1) The distance between the two middle jacks in the longitudinal groove is 2 y 1. The tops need to rise to | z 1- z 0| and| z 2- z 0|height; Step S500: After adjusting the positions and lifting heights of the various jacks, the split cable saddle is positioned within the steel tower shell. A steel frame is welded inside the steel tower shell to secure the split cable saddle to the tower shell. The outer corners of the tower shell are cut to expose the two ends of the split cable saddle, forming the exit point of the split cable saddle from the tower. In step S600, the cable saddle and the steel shell of the cable tower are welded and positioned with each other and then transported to the construction site for hoisting and splicing, thus completing the rapid positioning process of the cable saddle of the cable-stayed bridge.

Images