CN214573256U - Arch rib side turning opposite pulling erecting device - Google Patents
Arch rib side turning opposite pulling erecting device Download PDFInfo
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- CN214573256U CN214573256U CN202120384099.5U CN202120384099U CN214573256U CN 214573256 U CN214573256 U CN 214573256U CN 202120384099 U CN202120384099 U CN 202120384099U CN 214573256 U CN214573256 U CN 214573256U
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Abstract
本发明提供了一种拱肋侧向转体对拉架设装置，包括对拉拉索、连续张拉千斤顶、用于安装拱肋的台座，拱肋沿桥长方向设置有两根，两根拱肋对称布置在桥梁轴线左右两侧，台座位于拱肋端部，拱肋端部经临时转动铰与台座相连接，对拉架设前拱肋处于侧卧状态，所述侧卧状态是指拱肋外摆且与水平面之间的夹角为0‑10度，拱肋上沿其轴向间隔安装有若干连续张拉千斤顶，两根拱肋上的连续张拉千斤顶一一对应设置，两根拱肋上相对应设置的两个连续张拉千斤顶经对拉拉索相连接，本装置结构简单，设计合理，适用于各种跨径的拱桥施工，施工便捷，对于大跨度拱桥，无需设置较高的临时施工塔架，工程造价低,有着良好的实用价值和经济效益。
The invention provides an arch rib lateral swivel opposite tension erection device, which includes a pair of stay cables, a continuous tension jack, and a pedestal for installing the arch rib. Two arch ribs are arranged along the length direction of the bridge. The ribs are symmetrically arranged on the left and right sides of the bridge axis, the pedestal is located at the end of the arch rib, and the end of the arch rib is connected with the pedestal through a temporary rotating hinge. Swing outward and the included angle with the horizontal plane is 0-10 degrees. Several continuous tensioning jacks are installed on the arch rib at intervals along its axial direction. The two continuous tensioning jacks correspondingly arranged on the rib are connected by a pair of stay cables. The device has a simple structure and a reasonable design. It is suitable for the construction of arch bridges of various spans, and the construction is convenient. The temporary construction tower has low engineering cost and good practical value and economic benefit.
Description
Technical Field
The invention relates to an arch rib lateral turning split erection device.
Background
With the increasing development of national infrastructure construction, the span of an arch bridge is gradually increased, and the construction of an arch rib is the technical problem to be solved firstly. The common construction methods of the existing arch rib comprise two types of construction with a bracket method and construction without the bracket method: the construction of the support method is commonly used for masonry arch bridges, but usually a large number of arch frames are needed as temporary supports, the removal process of the arch frames is complex, the construction cost is high, and the support method is difficult to be suitable for complex terrains such as deep valleys; the construction of the bracket-free method is divided into a turning construction method and a cantilever construction method, wherein the turning construction method is most applied by a flat turning method, but when the span of an arch bridge is increased, arch ribs are too long, and the rotation is not easy to control; the cantilever construction method comprises the steps of constructing two half arches from arch springing positions to arch crown cantilevers, closing the arches, hoisting the arches in a segmented mode by a large crane in the cantilever construction process, assembling the arches at high altitude, and therefore the construction period is long, a large amount of high-altitude operation is needed, and great safety risks exist.
At present, for a large-span arch bridge, a cable-stayed cantilever method is most widely applied, wherein temporary construction towers are firstly erected on two sides of the bridge, a main arch rib is constructed from arch feet to a vault cantilever in stages, and the arch rib of the cantilever is pulled on the temporary construction towers by using a stay cable. However, the height of the temporary construction tower is often far higher than the height of the arch rib, and a large number of cable cranes are needed, which results in higher construction cost, and the development of the arch bridge is limited because of no economy of the cable-stayed bridge.
Disclosure of Invention
In view of the above, the present invention provides a device for erecting an arch rib by means of lateral turning and opposite pulling.
The invention is realized by adopting the following scheme: the utility model provides an arch rib side direction is turned and is drawn erection equipment to one side, includes to drawing cable, continuous stretch-draw jack, is used for installing the pedestal of arch rib, and the arch rib is provided with two along the bridge length direction, and two arch rib symmetric arrangement are in the bridge axis left and right sides, and the pedestal is located the arch rib tip, and the arch rib tip is connected with the pedestal through interim rotation hinge, and the arch rib is in the state of lying on one side before drawing the erection, the state of lying on one side means the arch rib outward swing and with the horizontal plane between contained angle be 0-10 degrees, install a plurality of continuous stretch-draw jacks along its axial interval on the arch rib, continuous stretch-draw jack one-to-one on two arch ribs sets up, two continuous stretch-draw jacks that correspond on two arch ribs and set up are connected through drawing the cable to one.
The arch rib horizontal type lifting device further comprises a transverse support rod, the arch ribs are laterally turned from the outer side to the inner side to be located at a reinforcing position before planes of the two arch ribs are parallel, the reinforcing position means that the arch ribs are swung outwards and the included angle between the arch ribs and a vertical plane is 0-5 degrees, when the arch ribs are located at the reinforcing position, the two arch ribs are connected with the transverse support rod which is arranged at intervals along the axial direction of the two arch ribs, a hydraulic cylinder which is parallel to the transverse support rod is installed at the end part of the transverse support rod, and the tail end of a piston rod of the hydraulic cylinder is hinged with the arch ribs on the same side.
Furthermore, a plurality of temporary buttresses are arranged at intervals at the lower side of the arch rib along the bridge length direction, and when the arch rib is in a side lying state, the arch rib is erected on the temporary buttresses.
Furthermore, a temporary tower is arranged below the middle part of the opposite-pulling inhaul cable, and a saddle for erecting the opposite-pulling inhaul cable is installed on the upper top surface of the temporary tower.
Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design is applicable to the arched bridge construction of various strides, and it is convenient to be under construction, to the large-span arched bridge, need not to set up higher interim construction pylon, and engineering cost is low, has good practical value and economic benefits.
Drawings
Fig. 1 is a structural schematic diagram of the arch rib in a lateral lying state.
Fig. 2 is a schematic view of a support structure of the arch rib in a lateral lying state.
Fig. 3 is a schematic view of a connection structure of the arch rib and the counter-pull cable.
Fig. 4 is a schematic view of the connection structure of the counter pull cable and the temporary tower when the height of the temporary tower is lower than the designed elevation of the arch rib.
Fig. 5 is a schematic view of a connection structure of a counter-pull cable when a temporary tower is not provided.
Fig. 6 is a schematic view of the connection structure of the bracing cable and the temporary tower when the height of the temporary tower is higher than the designed elevation of the arch rib.
Fig. 7 is a schematic view of a connection structure of a counter-pull cable and a continuous jack.
Fig. 8 is a schematic structural view of the transverse supporting rod.
In the figure: 1-a rib; 2-pulling the inhaul cable oppositely; 3, temporary rotary hinging; 4-a continuous jack; 5-a pedestal; 6-temporary buttress; 7-a temporary tower; 8-a fixed pulley; 9-transverse support bars; 10-a hydraulic cylinder; 11-a piston rod; 12-the place where the piston rod is hinged with the arch rib.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1-8, a device for erecting an arch rib by means of lateral turning and counter-pulling comprises counter-pulling cables 2, continuous tensioning jacks 4 and pedestals 5 for installing the arch rib 1, wherein two arch ribs are arranged along the bridge length direction, the two arch ribs are symmetrically arranged on the left side and the right side of the axis of a bridge, the pedestals are located at the end portions of the arch ribs, the end portions of the arch ribs are connected with the pedestals through temporary rotating hinges 3, the arch ribs are in a side-lying state before counter-pulling erection, the side-lying state means that the arch ribs swing outwards and the included angle between the arch ribs and the horizontal plane is 0-10 degrees, a plurality of continuous tensioning jacks are installed on the arch ribs at intervals along the axial direction of the arch ribs, the continuous tensioning jacks on the two arch ribs are arranged in one-to-one correspondence, and the two continuous tensioning jacks correspondingly arranged on the two arch ribs are connected through the counter-pulling cables.
In this embodiment, the continuous tensioning jack is installed on the outer side surface or the inner side surface of the arch rib, the fixed pulley 8 for the counter-pulling cable to pass around is installed on the inner side surface of the arch rib, and the upper wheel rim of the fixed pulley is always located at the center shaft of the continuous tensioning jack, so that the counter-pulling cable is perpendicular to the end plane of the continuous tensioning jack.
In this embodiment, the arch rib horizontal type connecting device further comprises a transverse support rod 9, the arch rib is laterally turned from the outer side to the inner side to a position where the two arch rib planes are parallel to each other and located at a reinforcing position, the reinforcing position refers to that the arch rib is swung outward and an included angle between the arch rib and a vertical plane is 0-5 degrees, when the arch rib is located at the reinforcing position, the two arch ribs are connected with the plurality of transverse support rods arranged at intervals along the axial direction of the arch rib, a hydraulic cylinder 10 parallel to the transverse support rod is installed at the end of the transverse support rod, and the tail end of a piston rod 11 of the hydraulic cylinder is hinged to the arch rib on the same side.
In this embodiment, a plurality of temporary buttresses 6 are arranged at intervals along the bridge length direction at the lower side of the arch rib, and when the arch rib is in a side-lying state, the arch rib is erected on the temporary buttresses.
In this embodiment, a temporary tower 7 is arranged below the middle of the counter-pulling cable, a saddle for erecting the counter-pulling cable is mounted on the upper top surface of the temporary tower, and the counter-pulling cable passes through the saddle, so that the counter-pulling cable has a large vertical lifting component force when the counter-pulling cable is pulled.
In the embodiment, the height of the temporary tower is lower than the designed elevation of the arch rib and is simultaneously higher than the height of the arch rib in the lateral lying state, when the arch rib is lifted from the lateral lying state to be parallel to the height of the temporary tower in a laterally rotating manner, the counter-pull guy cable is separated from the temporary tower, and in the process that the arch rib is lifted from the lateral lying state to the designed position in the bridge-forming state in the laterally rotating manner, the temporary tower only plays a role in supporting the counter-pull guy cable when the lifting height of the arch rib in the lateral rotating manner is not higher than the height of the tower; or, in the process that the arch rib is laterally lifted to the designed position of the bridge-forming state from the lateral lying state, a temporary tower frame is not arranged below the middle part of the opposite pulling inhaul cable; or the height of the temporary tower is higher than the designed elevation of the arch rib, and the opposite pulling cables are always supported on the temporary tower in the process that the arch rib is laterally lifted to the designed position of the bridge-forming state from the lateral lying state.
The construction steps of the arch rib lateral turning split erection are as follows:
the method comprises the following steps: erecting a plurality of temporary towers and temporary buttresses in the designed span of the arch rib;
step two: erecting the arch rib on a temporary buttress, and installing a temporary rotary hinge at the joint of the pedestal and the arch rib;
step three: a plurality of continuous tensioning jacks are axially installed at intervals along the arch rib, and two continuous tensioning jacks correspondingly arranged on the two arch ribs are connected through opposite-pulling cables;
step four: synchronously tensioning the pulling cables by a continuous tensioning jack to enable the arch ribs to laterally swivel from the outer side to the inner side to a reinforcing position from a lateral lying state, and then arranging a transverse support rod between the two arch ribs to hinge the tail end of a piston rod of a hydraulic cylinder at the end part of the transverse support rod with the arch ribs on the same side;
step five: continuously and synchronously tensioning the stay cables through a continuous tensioning jack, and simultaneously axially contracting through a hydraulic cylinder to control the side rotation angle of the arch rib during side rotation until the arch rib reaches a parallel or inward inclined design position;
step six: and dismantling the guy cable connected with the arch rib, the temporary tower and the temporary buttress, and completely solidifying the temporary rotating hinge to enable the arch rib and the pedestal to form a whole, thereby completing construction of erecting the opposite-pulling side rotating body of the arch rib.
In this embodiment, the transverse support bar can be used as a permanent transverse support or a temporary transverse support; for example, as a temporary lateral support, the rib is removed after reaching the design position to install a permanent lateral support.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using a bolt or screw connection) can also be understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a device is erected to turning to drawing in opposite directions to arch rib side direction which characterized in that: including to drawing cable, continuous tensioning jack, being used for installing the pedestal of arch rib, the arch rib is provided with two along the bridge length direction, and two arch rib symmetric arrangement are in the bridge axis left and right sides, and the pedestal is located the arch rib tip, and the arch rib tip is connected with the pedestal through interim rotation hinge, and the arch rib is in the state of lying on one's side before erecting to drawing, the state of lying on one's side means the arch rib outward swing and with the horizontal plane between contained angle be 0-10 degrees, install a plurality of continuous tensioning jack along its axial interval on the arch rib, continuous tensioning jack one-to-one on two arch ribs sets up, two continuous tensioning jack that correspond on two arch ribs and set up are connected the tensioning through drawing cable.
2. A rib side swivel split mounting apparatus according to claim 1, wherein: the horizontal type arch rib horizontal turning device is characterized by further comprising a horizontal supporting rod, the arch ribs are in a horizontal state and are laterally turned from the outer side to the inner side to be located at a reinforcing position before planes of the two arch ribs are parallel, the reinforcing position refers to that the arch ribs are outward swung, an included angle between the arch ribs and a vertical plane is 0-5 degrees, when the arch ribs are located at the reinforcing position, the two arch ribs are connected with the horizontal supporting rod which is arranged at intervals along the axial direction of the two arch ribs, a hydraulic cylinder which is parallel to the horizontal supporting rod is installed at the end portion of the horizontal supporting rod, and the tail end of a piston rod of the hydraulic cylinder is hinged to the arch ribs on the same side.
3. A rib side swivel split mounting apparatus according to claim 2, wherein: and a plurality of temporary buttresses are arranged at intervals at the lower side of the arch rib along the bridge length direction, and when the arch rib is in a side-lying state, the arch rib is erected on the temporary buttresses.
4. A rib side swivel split mounting apparatus according to claim 3, wherein: a temporary tower is arranged below the middle part of the counter-pulling stay cable, and a saddle for erecting the counter-pulling stay cable is mounted on the upper top surface of the temporary tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120384099.5U CN214573256U (en) | 2021-02-22 | 2021-02-22 | Arch rib side turning opposite pulling erecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120384099.5U CN214573256U (en) | 2021-02-22 | 2021-02-22 | Arch rib side turning opposite pulling erecting device |
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| CN214573256U true CN214573256U (en) | 2021-11-02 |
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| CN202120384099.5U Active CN214573256U (en) | 2021-02-22 | 2021-02-22 | Arch rib side turning opposite pulling erecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647406A (en) * | 2021-02-22 | 2021-04-13 | 福州大学 | Arch rib lateral turning opposite-pulling erecting device and construction method |
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2021
- 2021-02-22 CN CN202120384099.5U patent/CN214573256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647406A (en) * | 2021-02-22 | 2021-04-13 | 福州大学 | Arch rib lateral turning opposite-pulling erecting device and construction method |
| CN112647406B (en) * | 2021-02-22 | 2025-01-28 | 福州大学 | Arch rib lateral rotation tension erection device and construction method |
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