Suspender installation structure and method for a through arch bridge

Abstract

The application discloses a through-arch bridge suspender mounting structure and method, which comprises a suspender composed of an upper anchor point, a suspender body and a lower anchor point, and a plurality of constraint structures. The suspender body is folded in half, and the area close to the lower anchor point is fixed to the area close to the upper anchor point by the constraint structure. The suspender body is coiled into multiple turns, and a plurality of constraint structures are arranged between the adjacent turns to connect the suspender body into a disc-shaped structure. The constraint structure adopts an electric control switch, and the switch adopts current remote control. The application not only omits the subsequent cumbersome construction steps of installing the suspenders one by one through hoisting equipment, but also realizes one-time hoisting of the steel arch rib and the suspender, saves the cost of measures such as hanging baskets and inverted chains during the separate installation of the suspender, and saves the construction period. Moreover, the installation process of the suspender on the arch rib is carried out on the ground, the high-altitude operation time of the construction workers in the suspender installation stage is shortened, and the construction safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge high-efficiency energy-saving industry, in particular to a through arch bridge suspender installation structure and method. BACKGROUND

[0002] The existing through arch bridge suspender construction generally adopts a method of synchronously installing the through arch bridge suspender and the main beam. However, this method has the following defects:

[0003] ①The suspender upper anchor point installation needs to set a hanging basket operation platform on the arch rib, and the operation platform needs to be customized; the anchor point installation needs to be completed by manual cooperation with hoisting equipment, and the construction workers have a long high-altitude operation time and a large safety risk;

[0004] ②The suspender needs to be separately hoisted to the installation position by using a cable crane and other hoisting equipment, thereby reducing the hoisting efficiency of the hoisting equipment. SUMMARY

[0005] In view of the above defects of the prior art, a through arch bridge suspender installation structure and method are provided to reduce the installation cost and time, improve the construction safety, and achieve the purpose of high efficiency and energy saving.

[0006] The technical scheme adopted by the present application to solve the above technical problems is:

[0007] The through arch bridge suspender installation structure comprises a suspender, which is composed of an upper anchor point, a suspender body, and a lower anchor point; and is characterized in that: it further comprises a plurality of constraint structures; the suspender body is folded in half, and the region of the suspender body close to the lower anchor point is fixed at the region of the suspender body close to the upper anchor point by the constraint structure; the suspender body is coiled into multiple turns, and a plurality of constraint structures are arranged at intervals between adjacent turns to connect the suspender body into a disc-shaped structure by the constraint structures; the constraint structure adopts an electric control switch, and the switch adopts current remote control.

[0008] According to the above technical scheme, at least one constraint structure is arranged between adjacent turns.

[0009] According to the above technical scheme, the suspender body is coiled into a corresponding number of turns according to the space available for the disc-shaped structure to pass during the construction process.

[0010] According to the above technical scheme, the suspender body is coiled into three turns, which are a left turn, a middle turn, and a right turn; three constraint structures are arranged, a first constraint structure is connected between the left turn and the middle turn, a second constraint structure is connected between the middle turn and the right turn, and a third constraint structure is connected between the region of the suspender body close to the lower anchor point and the region of the suspender body close to the upper anchor point; and the three constraint structures are arranged at equal intervals on the disc-shaped structure.

[0011] According to the above technical solution, the constraint structure includes a first ring hoop and a second ring hoop that are fixedly connected; both the first ring hoop and the second ring hoop are composed of three arc segments connected together, one end of the first arc and the second arc are respectively hinged to the two ends of the third arc, and the three form a ring structure; the two third arcs are fixedly connected, and the central angle of the third arc is not greater than 180°.

[0012] In the first ring hoop, the other end of the first arc and the other end of the second arc are connected by bolts;

[0013] In the second ring, the other end of the first arc and the other end of the second arc are connected by an existing electromagnetic connection structure; the current on / off switch in the existing electromagnetic connection structure is remotely controlled by the current.

[0014] This invention also provides a method for installing hangers in a bottom-bearing arch bridge.

[0015] The suspension rods are coiled on the ground by a constraint structure to form a lower-bearing arch bridge suspension rod installation structure;

[0016] The upper anchor points are installed on the arch ribs on the ground, and both are simultaneously hoisted onto the bridge.

[0017] After the main beam is installed, select a hanger at one end and connect the lower anchor point of the hanger to the hook of the hoisting equipment; release the restraint structure synchronously to the lower hook and fix the lower anchor point to the main beam, and then tension the hanger;

[0018] Connect the lower anchor points of adjacent booms to the hook, and repeat the above operation until all booms are tensioned.

[0019] According to the above technical solution, before the process of coiling the suspenders into the suspender installation structure of the under-bearing arch bridge, it is necessary to determine the number of coiling turns of the suspender body, as well as the number and placement position of the constraint structure between two adjacent turns.

[0020] According to the above technical solution, the process of releasing the constraint structure is as follows:

[0021] First, release the constraint structure connecting the area of ​​the pole near the lower anchor point and the area of ​​the pole near the upper anchor point;

[0022] Secondly, using the following anchor points as reference points, release the constraint structure one by one from near to far.

[0023] According to the above technical solution, the process of releasing the constraint structure is as follows:

[0024] First, release the constraint structure connecting the area of ​​the pole near the lower anchor point and the area of ​​the pole near the upper anchor point;

[0025] Secondly, using the following anchor points as reference points, the constraint structure is released ring by ring from near to far, with the constraint structure on adjacent rings being released simultaneously.

[0026] According to the technical scheme, the process of releasing the constraint structure is as follows:

[0027] First, the constraint structure is released one by one or in turns from the near to the far, with the anchor point as the reference point, and the constraint structures on the adjacent two turns are released synchronously.

[0028] Second, the constraint structure between the area near the lower anchor point of the rod body and the area near the upper anchor point of the rod body is released.

[0029] The present application has the following beneficial effects:

[0030] The hanger rods are coiled into a disc-shaped structure, and multiple constraint structures are used to solidify the disc-shaped structure. Then, on the ground, the hanger rods of the disc-shaped structure are installed on the arch rib. During the installation of the arch rib on the bridge structure, all the hanger rods are installed synchronously, and the hanger rods coiled into the disc-shaped structure occupy less space and have less impact on the subsequent bridge construction. After the main beam is installed, the hook of the external hoisting equipment is connected with the lower anchor head, and then the constraint structure is released, so that the hanger rods are switched from the disc-shaped structure to the vertical state. During the process, the connection of the hook avoids the swinging of the hanger rods during the release of the constraint structure. After the release of the constraint structure is completed, the lower anchor head is installed on the main beam, and the tensioning operation is completed.

[0031] Based on the above structure, not only the cumbersome construction steps of installing the hanger rods one by one by hoisting equipment are omitted, but also the steel arch rib and the hanger rods can be hoisted at one time, which saves the cost of measures such as hanging baskets and inverted chains during the installation of the hanger rods, and also saves the construction period. Moreover, the installation of the hanger rods on the arch rib is carried out on the ground, which shortens the high-altitude operation time of the construction personnel during the installation of the hanger rods and improves the construction safety.

[0032] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application and to implement the content of the description, the following will describe the preferred embodiments of the present application in detail with reference to the accompanying drawings. The specific embodiments of the present application are described in detail by the following examples and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application.

[0034] Fig. 1 is the working condition one of the embodiments provided by the present application;

[0035] Fig. 2 is the working condition two of the embodiments provided by the present application;

[0036] Fig. 3 is a working condition three provided by the embodiment of the present application;

[0037] Fig. 4 is a schematic diagram of a constraint structure provided by the embodiment of the present application

[0038] In the figure, 1, upper anchor point; 2, shaft; 3, lower anchor point; 4, constraint structure; 5, first constraint structure; 6, second constraint structure; 7, third constraint structure; 7a, first ring hoop; 7b, second ring hoop; 7-1, first circular arc; 7-2, second circular arc; 7-3, third circular arc; 7-4, bolt; 7-5, existing electromagnetic connection structure; 7-6, rotating shaft. DETAILED DESCRIPTION

[0039] The following detailed description is provided to understand the principles and features of the present application, and the examples are only used to explain the present application, and are not used to limit the scope of the present application. In the following paragraphs, the present application is described in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present application will be more apparent from the following description and claims. It should be noted that the drawings are very simplified and use non-precise proportions, only to facilitate, clearly assist in the purpose of explaining the embodiments of the present application. Figs. 1-4 It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0041] Reference will now be made to the drawings

[0042] As shown, the present application provides a suspender installation structure of a through arch bridge. Figs. 1-4 Embodiment 1

[0043]

[0044] ​The derrick comprises an upper anchor point 1, a rod body 2, and a lower anchor point 3; further comprises a plurality of constraint structures; the derrick is folded in half, and the area of the rod body close to the lower anchor point is fixed at the area of the rod body close to the upper anchor point through the constraint structure; the rod body is coiled into multiple turns, and a plurality of constraint structures 4 are arranged at intervals between adjacent two turns, and the rod body is connected into a disc structure by the constraint structures; the constraint structure adopts an electric control switch, and the switch adopts current remote control.

[0045] In embodiment 1, according to the space available for the disc structure to pass during construction, the rod body is coiled into corresponding turns. The rod body is coiled into n turns, which are a first turn, a second turn, …, and an n-th turn; n constraint structures are arranged, a first constraint structure is connected between the first turn and the second turn, a second constraint structure is connected between the second turn and the third turn, …, an n-1 constraint structure is connected between the n-1 turn and the n turn, and an n constraint structure is connected between the area of the rod body close to the lower anchor point and the area of the rod body close to the upper anchor point.

[0046] In embodiment 1, preferably, at least one constraint structure is arranged between adjacent two turns.

[0047] Embodiment 2

[0048] The structure and principle of embodiment 2 are similar to those of embodiment 1, and the difference lies in that a preferred coiling form of the rod body is given; the rod body is coiled into three turns, which are a left turn, a middle turn, and a right turn; three constraint structures are arranged, a first constraint structure 5 is connected between the left turn and the middle turn, a second constraint structure 6 is connected between the middle turn and the right turn, and a third constraint structure 7 is connected between the area of the rod body close to the lower anchor point and the area of the rod body close to the upper anchor point; and the three constraint structures are arranged at equal intervals on the disc structure. The control method and the constraint device structure form of the first constraint structure, the second constraint structure, and the third constraint structure are consistent.

[0049] Embodiment 3

[0050] The structure and principle of embodiment 3 are similar to those of embodiments 1 and 2, and the difference lies in that a preferred structure form of the constraint structure is given. The constraint structure comprises a first hoop 7a and a second hoop 7b fixedly connected; the first hoop and the second hoop are both composed of three circular arc segments, one end of a first circular arc 7-1 and one end of a second circular arc 7-2 are hingedly connected to two ends of a third circular arc 7-3 through shafts 7-6, and the three form a circular ring structure; the two third circular arcs are fixedly connected, and the central angle of the third circular arc is not greater than 180°.

[0051] In the first hoop, the other end of the first circular arc and the other end of the second circular arc are connected through a bolt 7-4.

[0052] In the second hoop, the other end of the first circular arc and the other end of the second circular arc are connected by the existing electromagnetic connection structure 7-5; the current on-off switch in the existing electromagnetic connection structure adopts current remote control.

[0053] In the embodiment, the first hoop and the second hoop are simultaneously connected at a certain position of the rod body, the on-off of the existing electromagnetic connection structure is controlled remotely, the second hoop is separated from the rod body, and the state of the contact rod body is coiled; in addition, the first hoop is sleeved on the rod body by the bolt, after the second hoop is separated from the rod body, only the first hoop is sleeved on the rod body, all the constraint structures are slid to the lower anchor point, and the recovery of the constraint structure is facilitated.

[0054] Two hoops can also be fixed on the rod body, and the existing electromagnetic connection structure is connected between the two hoops, and the current on-off switch in the existing electromagnetic connection structure adopts current remote control. The effect of the structure is the same as that of the above structure.

[0055] The application also provides a method for installing a lower bearing type arch bridge suspender.

[0056] Embodiment 1

[0057] The suspender is coiled on the ground into a lower bearing type arch bridge suspender installation structure by the constraint structure; before the process of coiling the suspender into the lower bearing type arch bridge suspender installation structure, the number of coiling turns of the rod body and the number and placement position of the constraint structure between adjacent two turns need to be determined.

[0058] The upper anchor point is installed on the arch rib on the ground, and the upper anchor point and the arch rib are synchronously hoisted to the bridge;

[0059] After the main beam is installed, the suspender at one side end is selected, the lower anchor point of the suspender is connected to the hook of the hoisting device, the constraint structure is released, the lower anchor point is fixed on the main beam, and then the suspender is tensioned;

[0060] The lower anchor points of adjacent suspenders are connected to the hook, and the above operation is repeated until all the suspenders are tensioned.

[0061] In embodiment 1, the process of releasing the constraint structure is as follows:

[0062] Firstly, the constraint structure connected between the region close to the lower anchor point of the rod body and the region close to the upper anchor point of the rod body is released;

[0063] Secondly, taking the lower anchor point as a reference point, the constraint structure is released one by one from near to far.

[0064] In the embodiment, the hangers are tied into a disc-shaped structure, and a plurality of constraint structures are used to solidify the disc-shaped structure. Then, on the ground, the hangers of the disc-shaped structure are installed on the arch ribs, and in the process of installing the hangers on the arch ribs, all the hangers are installed synchronously, and the hangers tied into the disc-shaped structure occupy less space and have less impact on the subsequent bridge construction. After the main girder is installed, the hangers are switched from the disc-shaped structure to the vertical state by connecting the hooks of external hoisting equipment with the lower anchor heads and then releasing the constraint structures, and in this process, the connection of the hooks avoids the swinging of the hangers during the release of the constraint structures. After the release of the constraint structures is completed, the lower anchor heads are installed on the main girder, and the tensioning operation is completed.

[0065] Based on the above structure, not only the cumbersome construction steps of installing the hangers one by one by hoisting equipment are omitted, but also the steel arch ribs and the hangers can be hoisted at one time, the measure cost of the hanging basket, the chain and other devices during the installation of the hangers is saved, and the construction period is saved. Moreover, the installation of the hangers on the arch ribs is carried out on the ground, the high-altitude operation time of the construction workers during the installation of the hangers is shortened, and the construction safety is improved.

[0066] Embodiment 2

[0067] The steps and methods of Embodiment 2 are similar to those of Embodiment 1, and the difference lies in that the process of releasing the constraint structures is as follows:

[0068] First, the constraint structures connected between the region close to the lower anchor point and the region close to the upper anchor point of the rod body are released.

[0069] Second, the constraint structures are released from near to far in turns, taking the lower anchor point as the reference point, and the constraint structures on adjacent turns are released synchronously.

[0070] Embodiment 3

[0071] The steps and methods of Embodiment 3 are similar to those of Embodiment 1, and the difference lies in that as shown in the figure (only the case of arranging one constraint structure between adjacent turns is shown), the process of releasing the constraint structures is as follows: Figs. 1-3

[0072] First, the constraint structures are released from near to far in turns, taking the upper anchor point as the reference point, and the constraint structures on adjacent turns are released synchronously.

[0073] Second, the constraint structures connected between the region close to the lower anchor point and the region close to the upper anchor point of the rod body are released.

[0074] ​The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can easily implement the present application according to the drawings and the above description; however, any person skilled in the art can make some changes, modifications and equivalent changes within the scope of the technical solutions of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical solutions of the present application.

Claims

1. A suspension rod installation structure for a bottom-bearing arch bridge, comprising a suspension rod, which is composed of an upper anchor point, a rod body, and a lower anchor point; characterized in that: It also includes various constraint structures; the boom is folded in half, and the area of ​​the boom near the lower anchor point is fixed to the area of ​​the boom near the upper anchor point through the constraint structure; the boom is coiled into multiple rings, and multiple constraint structures are spaced between adjacent rings, and the constraint structures connect the boom into a disc-shaped structure; the constraint structure uses an electric control switch, and the switch is remotely controlled by current.

2. The under-bearing arch bridge suspension rod installation structure according to claim 1, characterized in that: At least one constraint structure must be provided between two adjacent rings.

3. The under-bearing arch bridge hanger installation structure according to claim 1, characterized in that: Based on the space available for the coiled structure to pass through during construction, the pole is coiled into the corresponding number of turns.

4. The under-bearing arch bridge hanger installation structure according to claim 1, characterized in that: The pole is coiled into three concentric circles: a left circle, a middle circle, and a right circle. It has three constraint structures: the first constraint structure connects the left and middle circles, the second constraint structure connects the middle and right circles, and the third constraint structure connects the area of ​​the pole near the lower anchor point and the area of ​​the pole near the upper anchor point. The three constraint structures are evenly spaced on the disc-shaped structure.

5. The under-bearing arch bridge suspension rod installation structure according to any one of claims 1-4, characterized in that: The constraint structure includes a first ring hoop and a second ring hoop that are fixedly connected; both the first ring hoop and the second ring hoop are composed of three arc segments connected together, with one end of the first arc and the second arc respectively hinged to the two ends of the third arc, forming a ring structure; the two third arcs are fixedly connected, and the central angle of the third arc is not greater than 180°. In the first ring hoop, the other end of the first arc and the other end of the second arc are connected by bolts; In the second ring, the other end of the first arc and the other end of the second arc are connected by an existing electromagnetic connection structure; the current on / off switch in the existing electromagnetic connection structure is remotely controlled by the current.

6. A method for installing hangers on a bottom-bearing arch bridge, characterized in that: The suspension rods are coiled on the ground by a constraint structure to form a lower-bearing arch bridge suspension rod installation structure; The upper anchor points are installed on the arch ribs on the ground, and both are simultaneously hoisted onto the bridge. After the main beam is installed, select a hanger at one end and connect the lower anchor point of the hanger to the hook of the hoisting equipment; release the restraint structure and lower the hook simultaneously, and fix the lower anchor point on the main beam, then tension the hanger; Connect the lower anchor points of adjacent booms to the hook, and repeat the above operation until all booms are tensioned.

7. The method for installing the hangers of a bottom-bearing arch bridge according to claim 6, characterized in that: Before the process of coiling the suspenders into the suspender installation structure of the under-bearing arch bridge, it is necessary to determine the number of coils in the suspender body, as well as the number and placement of the restraint structures between adjacent coils.

8. The method for installing the hangers of a bottom-bearing arch bridge according to claim 6, characterized in that: The process of releasing the constraint structure is as follows: First, release the constraint structure connecting the area of ​​the pole near the lower anchor point and the area of ​​the pole near the upper anchor point; Secondly, using the following anchor points as reference points, release the constraint structure one by one from near to far.

9. The method for installing the hangers of a bottom-bearing arch bridge according to claim 6, characterized in that: The process of releasing the constraint structure is as follows: First, release the constraint structure connecting the area of ​​the pole near the lower anchor point and the area of ​​the pole near the upper anchor point; Secondly, using the following anchor points as reference points, the constraint structure is released ring by ring from near to far, with the constraint structure on adjacent rings being released simultaneously.

10. The method for installing the hangers of a bottom-bearing arch bridge according to claim 6, characterized in that: The process of releasing the constraint structure is as follows: First, using the above anchor points as reference points, release the constraint structures one by one or circle by circle from near to far, with the constraint structures on adjacent circles released synchronously. Secondly, release the constraint structure connecting the area of ​​the pole near the lower anchor point and the area of ​​the pole near the upper anchor point.

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