Construction system for vertical rotation of arch rib through rigid jacking

Abstract

The utility model provides a construction system utilizing rigid jacking to vertically rotate an arch rib, which is characterized in that a first rotating hinge is arranged between an arch foot and the arch rib, a moving trolley is arranged on a main beam, one end of a rigid supporting rod is connected with a second rotating hinge on the arch rib, the other end of the rigid supporting rod is connected with the moving trolley, and the moving trolley and the first rotating hinge are connected through a steel strand. And the first rotating hinge is connected with the tower top guide wheel, the ground guide wheel and the traction system and is finally anchored to the anchoring system. The vertical projection length of the rigid supporting rod is changed by sliding the moving trolley, so that jacking of the arch rib is achieved, vertical rotation of the arch rib is achieved by jacking the arch rib, and sliding of the moving trolley achieves traction of the moving trolley through the connecting position of the bottom end of the arch rib and an arch foot and a guiding system, a traction system and an anchoring system on the short tower. According to the utility model, the tower height of the short tower is greatly reduced while the vertical rotation construction of the arch rib is realized, so that the high-altitude construction risk is reduced, and the construction cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of methods or equipment specifically used for erecting or assembling bridges, and in particular to a construction system for vertically rotating arch ribs using rigid jacking. Background Art

[0002] During the construction process of vertical rotation of the arch rib, the existing construction scheme needs to set up a tower as a support point, use a buckle cable to pull the arch rib 50 upward to perform vertical rotation, and finally close and lock the arch rib 50. This method is disclosed in the patent with publication number CN100582372C. The specific operation steps are as follows:

[0003] S1, sequentially install the main beam support 10, the arch foot 20, the main beam 30, the arch rib support 40, the arch rib 50, and set the arch foot rotating hinge 60 (such as Figure 1 shown);

[0004] S2, install the high tower 70, anchor system 80, traction system 90 and guide system 100 (such as Figure 2 shown);

[0005] S3, the traction system 90 tensions the steel strand 110 to vertically rotate the arch rib 50 to the closing height and temporarily lock it (such as Figure 3 shown);

[0006] S4, weld the closed section and close the arch foot rotating hinge 60, then install the arch rib hanger 120 and tension it, and finally remove the temporary supporting structures such as the main beam support 10, arch rib support 40, high tower 70 (such as Figure 4 shown).

[0007] The above construction scheme has the following disadvantages:

[0008] (1) It is necessary to erect a high tower, and the risk of high-altitude construction is high; Reason: When the arch rib is lifted and rotated vertically, a high fulcrum is required to facilitate the arch rib lifting construction.

[0009] (2) High towers consume a lot of materials and have relatively high construction costs. Reason: erecting high towers requires more corresponding steel pipe materials, labor costs and large lifting equipment.

[0010] In order to reduce the safety risks of high-altitude operations and lower construction costs, the applicant proposed a new solution. Utility Model Content

[0011] The utility model aims to solve at least one of the technical problems existing in the prior art, reduce the safety risk of high-altitude operations, and reduce construction costs. To this end, the utility model proposes a construction system for vertical rotation of arch ribs using rigid jacking, and the technical solutions adopted include:

[0012] A construction system for vertically rotating an arch rib by rigid jacking, comprising a main beam support, a main beam, an arch foot, an arch rib support and a pair of arch ribs, and also comprising an anchoring system, a traction system, a rotating hinge system, a mobile traction system and a rigid support system; the anchoring system and the traction system are arranged on both sides of the main beam support; the rotating hinge system comprises a first rotating hinge connecting the arch rib and the arch foot, and a second rotating hinge arranged in the middle of the arch rib; the mobile traction system comprises a pair of mobile trolleys arranged on the main beam and a traction rope connected to the mobile trolley, the pair of mobile trolleys are respectively arranged on the main beams below the arch ribs on both sides, the rigid support system connects the mobile trolley on the corresponding side and the second rotating hinge of the arch rib, one end of the traction rope is fixed on the mobile trolley, and the other end is connected to the traction system after passing through the first rotating hinge, and finally anchored to the anchoring system, the mobile trolley is in the middle section of the main beam in the initial state, and can slide on the main beam towards the arch foot on its side under the traction of the traction rope.

[0013] According to a construction system for vertically rotating an arch rib by rigid jacking according to an embodiment of the utility model, short towers are respectively provided on both sides of the main beam support, and a guide system is provided on the short towers.

[0014] According to a construction system for vertically rotating an arch rib using rigid jacking according to an embodiment of the utility model, the rigid support is a rigid strut.

[0015] According to a construction system for vertically rotating an arch rib using rigid jacking according to an embodiment of the utility model, the guide system is a tower top guide wheel.

[0016] According to a construction system for vertically rotating an arch rib by using rigid jacking in an embodiment of the utility model, a ground guide wheel is provided between the short tower and the traction system.

[0017] According to a construction system for vertically rotating an arch rib using rigid jacking according to an embodiment of the utility model, the traction rope is a steel strand.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] In this method, a first rotating hinge is arranged between the arch foot and the arch rib, a moving trolley is arranged on the main beam, one end of the rigid support rod is connected to the second rotating hinge on the arch rib, and the other end is connected to the moving trolley, a steel wire rope is used to connect the moving trolley and the first rotating hinge, and the tower top guide wheel, the ground guide wheel and the traction system are connected through the first rotating hinge, and finally the trolley is anchored to the anchoring system. The utility model arranges a rigid support rod under the arch rib, and a movable trolley is arranged under the rigid support rod. The vertical projection length of the rigid support rod is changed by sliding the movable trolley, thereby realizing the jacking of the arch rib, and utilizing the jacking arch rib to realize the vertical rotation of the arch rib. The sliding of the movable trolley realizes the pulling of the movable trolley through the guide system, traction system and anchoring system on the connection between the bottom end of the arch rib and the arch foot, and the short tower frame. The method utilizes rigid support to jack up the arch rib, and only needs to set a short tower frame of a certain height according to the height of the arch foot. Even if the height of the arch foot is relatively low, the short tower frame may not be provided. The utility model greatly reduces the tower height of the short tower frame while realizing the vertical rotation construction of the arch rib, thereby reducing the risk of high-altitude construction and saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of the steps of the arch rib vertical rotation construction method in the prior art Figure 1 ;

[0022] Figure 2 Schematic diagram of the steps of the arch rib vertical rotation construction method in the prior art Figure 2 ;

[0023] Figure 3 Schematic diagram of the steps of the arch rib vertical rotation construction method in the prior art Figure 3 ;

[0024] Figure 4 Schematic diagram of the steps of the arch rib vertical rotation construction method in the prior art Figure 4 ;

[0025] Figure 5 The utility model application embodiment of the arch rib vertical rotation construction method schematic diagram Figure 1 ;

[0026] Figure 6 The utility model application embodiment of the arch rib vertical rotation construction method schematic diagram Figure 2 ;

[0027] Figure 7 The utility model application embodiment of the arch rib vertical rotation construction method schematic diagram Figure 3 ;

[0028] Figure 8 The utility model application embodiment of the arch rib vertical rotation construction method schematic diagram Figure 4 .

[0029] Description of main component symbols:

[0030] 10. Main beam support; 20. Arch foot; 30. Main beam; 40. Arch rib support; 50. Arch rib; 60. Arch foot rotating hinge; 70. High tower; 80. Anchoring system; 90. Traction system; 100. Guide system; 110. Steel strand; 120. Arch rib hanger; 130. Low tower; 140. Ground guide wheel; 150. First rotating hinge; 160. Second rotating hinge; 170. Moving trolley; 180. Rigid support rod. DETAILED DESCRIPTION

[0031] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0032] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0035] The utility model provides a construction system for vertical rotation of arch ribs by using rigid jacking, such as Figure 5 , 6As shown in , 7 and 8, it includes a main beam support, a main beam, an arch foot, an arch rib support and a pair of arch ribs, and also includes an anchoring system, a traction system, a rotating hinge system, a mobile pulling system, a rigid strut system and a short tower; the anchoring system and the traction system are arranged on both sides of the main beam support; short towers are respectively arranged on both sides of the main beam support, and tower top guide wheels are arranged on the short towers; ground guide wheels are arranged between the short towers and the traction system; the rotating hinge system includes a first rotating hinge connecting the arch rib and the arch foot, and a second rotating hinge arranged in the middle of the arch rib; The mobile traction system includes a pair of mobile trolleys arranged on the main beam and steel strands connected to the mobile trolleys. The pair of mobile trolleys are respectively arranged on the main beams under the arch ribs on both sides. The rigid strut system connects the mobile trolley on the corresponding side and the second rotating hinge of the arch rib. One end of the steel strand is fixed to the mobile trolley, and the other end is connected to the traction system after passing through the first rotating hinge, and finally anchored to the anchoring system. The mobile trolley is in the middle section of the main beam in the initial state, and can slide on the main beam toward the arch foot on its side under the traction of the traction system and the steel strand.

[0036] The specific construction steps are as follows:

[0037] S1, sequentially install the main beam support 10, the main beam 30, the arch foot 20 and the arch rib support 40;

[0038] S2, assembling the short towers 130 on both sides, wherein the height of the highest point of the short towers 130 does not exceed the height of the highest point of the arch foot 20; setting a guide system 100 on the towers on both sides, wherein the guide system 100 is a tower top guide wheel; installing an anchoring system 80 and a traction system 90 on both sides respectively; and setting a ground guide wheel 140 between the short tower 130 and the traction system 90;

[0039] S3, hoisting the arch rib 50, placing a pair of arch ribs 50 on the arch rib bracket 40 on the side respectively; each arch rib 50 is rotatably connected to the arch foot 20 at one end thereof close to the arch foot 20 on the side; specifically, firstly setting a mobile door crane, lifting the arch rib 50 by the mobile door crane, adjusting the angle, gradually lowering the arch rib 50, placing the top end of the arch rib 50 on the arch rib bracket 40, and then connecting the bottom end of the arch rib 50 to the arch foot 20 through the first rotating hinge 150;

[0040] S4, installing a second rotating hinge 160 at the middle of each arch rib 50;

[0041] S5. A pair of moving trolleys 170 are arranged on the main beam 30. Each moving trolley 170 is located in the middle of the main beam 30 in the initial stage. The pair of moving trolleys 170 can move on the main beam 30 from the middle of the main beam 30 to the arch feet 20 on both sides under the action of external force.

[0042] S6. Each mobile trolley 170 is provided with a rigid support rod 180 between the second rotating hinges 160 on the arch rib 50 on the side thereof;

[0043] S7, steel strands 110 are respectively arranged on both sides, one end of the steel strand 110 is fixed on the moving trolley 170, and the other end passes through the first rotating hinge 150, and is sequentially connected to the tower top guide wheel, the ground guide wheel 140, and the traction system 90, and finally anchored on the anchor system 80;

[0044] S8, the traction systems 90 on both sides respectively tension the traction ropes to move the moving trolley 170 on the main beam 30 toward the arch foot 20 on the side where it is located, so that the rigid support lifts the arch rib 50 to the designed elevation;

[0045] S9, welding the closed sections of the two arch ribs 50 and closing the rotating portion at the arch foot 20;

[0046] S10, dismantling the steel strand 110, the rigid support rod 180, the second rotary hinge 160, the mobile trolley 170, the anchoring system 80 and the traction system 90;

[0047] S11, installing the arch rib hanger 120 and tensioning it;

[0048] S12, dismantling the temporary supporting structure, including dismantling the main beam support 10, the arch rib support 40 and the short tower 130.

[0049] In this method, a first rotating hinge 150 is set between the arch foot 20 and the arch rib 50, and a moving trolley 170 is set on the main beam 30. One end of the rigid support rod 180 is connected to the second rotating hinge 160 on the arch rib 50, and the other end is connected to the moving trolley 170. The moving trolley 170 and the first rotating hinge 150 are connected by a steel wire rope 110, and are connected to the tower top guide wheel, the ground guide wheel 140, and the traction system 90 through the first rotating hinge 150, and finally anchored to the anchoring system 80. The utility model sets a rigid support rod 180 under the arch rib 50, and a moving trolley 170 is set under the rigid support rod 180. The vertical projection length of the rigid support rod 180 is changed by sliding the moving trolley 170, so as to realize the jacking of the arch rib 50, and the vertical rotation of the arch rib 50 is realized by using the jacking arch rib 50. The sliding of the moving trolley 170 realizes the pulling of the moving trolley 170 through the guide system 100, the traction system 90 and the anchoring system 80 on the short tower 130 at the connection between the bottom end of the arch rib 50 and the arch foot 20. The method uses rigid support to jack up the arch rib 50, and only needs to set a short tower 130 of a certain height according to the height of the arch foot 20. Even if the height of the arch foot 20 is relatively low, the short tower 130 may not be set. The utility model greatly reduces the tower height of the short tower 130 while realizing the vertical rotation construction of the arch rib 50, thereby reducing the risk of high-altitude construction and saving construction costs.

[0050] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A construction system for vertically rotating an arch rib using rigid jacking, comprising a main beam support (10), a main beam (30), an arch foot (20), an arch rib support (40) and a pair of arch ribs (50), characterized in that: The invention also includes an anchoring system (80), a traction system (90), a rotating hinge system, a mobile pulling system and a rigid support system; the anchoring system (80) and the traction system (90) are arranged on both sides of the main beam support (10); the rotating hinge system includes a first rotating hinge (150) connecting the arch rib (50) and the arch foot (20), and a second rotating hinge (160) arranged in the middle of the arch rib (50); the mobile pulling system includes a pair of mobile trolleys (170) arranged on the main beam (30) and a traction rope connected to the mobile trolley (170); the pair of mobile trolleys (170) are connected to the main beam (30); The first and second swivel hinges (160) of the first and second swivel hinges (150) are connected to the main beam (30) below the arch ribs (50) on both sides, respectively. The rigid support system is connected to the movable trolley (170) on the corresponding side and the second swivel hinge (160) on the arch rib (50). One end of the traction rope is fixed to the movable trolley (170), and the other end is connected to the traction system (90) after passing through the first swivel hinge (150), and finally anchored to the anchor system (80). The movable trolley (170) is located in the middle section of the main beam (30) in the initial state, and can slide on the main beam (30) and approach the arch foot (20) on its side under the traction of the traction rope.

2. A construction system for vertical rotation of arch ribs using rigid jacking according to claim 1, characterized in that: Short towers (130) are respectively arranged on both sides of the main beam support (10), and a guide system is arranged on the short towers (130).

3. A construction system for vertical rotation of arch ribs using rigid jacking according to claim 1, characterized in that: The rigid support is a rigid support rod (180).

4. A construction system for vertical rotation of arch ribs using rigid jacking according to claim 2, characterized in that: The guide system (100) is a tower top guide wheel.

5. The construction system for vertical rotation of arch ribs using rigid jacking according to claim 2, characterized in that: A ground guide wheel (140) is provided between the short tower (130) and the traction system (90).

6. The construction system for vertical rotation of arch ribs using rigid jacking according to claim 1, characterized in that: The traction rope is a steel strand (110).

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