A tied-arch arch rib segment installation aid

Abstract

The utility model relates to bridge construction technical field, concretely, it is a kind of tied arch rib segment installation auxiliary structure, it includes: wedge-shaped guide plate and at least two arc limit board, the wedge-shaped guide plate is connected with arch foot, for guiding arch rib segment and the arch foot connection;The arc limit board is connected with arch rib support frame, for the installation position of arch rib segment in advance limit;The arch foot is connected with the both ends of bridge surface;The arch rib support frame is installed on bridge surface, for providing support for arch rib segment installation;The wedge-shaped guide plate is at least one edge arc-shaped strip steel plate, its arc-shaped edge and the line shape of the upper mouth of the inner diameter of the arch rib segment to be installed are consistent;The arc limit board is single-leaf hyperboloid steel plate, its curved surface and the shape of the outer diameter of the arch rib segment required to be installed are consistent, located the lower mouth of the both ends of the arch rib segment to be installed.The utility model can assist crane to adjust the position of arch rib segment, ensure installation accuracy, speed up construction speed.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to an auxiliary structure for installing the rib segments of a tied arch. Background Technology

[0002] Steel box girder tied arch bridges have advantages such as large span, light structure, beautiful shape, and material saving, and are widely used in highway engineering projects. Due to their large span characteristics, they need to be processed in sections during construction. The axis of the tied arch rib is a catenary, and the curvature between each section is different. How to control the alignment during fabrication and ensure the quality of the interface between each section is a technical challenge in the construction process.

[0003] In the existing technology, monitoring can only be done with a total station and adjustments can be made slowly with a crane. However, due to the heavy weight of each arch rib, the crane's adjustment accuracy is limited, the position of the cable guide is inaccurate, and the error is large, resulting in uneven cable tension. Consequently, the bridge alignment cannot meet the specifications, affecting the quality of the project. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary structure for the installation of the arch rib segments of a tied arch. Compared with the prior art, the auxiliary structure of this utility model can assist the crane in adjusting the position of the arch ribs, ensuring installation accuracy, making the bridge alignment meet the specifications, speeding up construction, and ensuring the smooth progress of the project.

[0005] The technical solution of this utility model is: an auxiliary structure for installing the arch rib segment of a tie-rod arch, comprising: The bridge deck includes a wedge-shaped guide plate and at least two arc-shaped limiting plates. The wedge-shaped guide plate is connected to the arch foot and is used to guide the arch rib segment to connect with the arch foot. The arc-shaped limiting plates are connected to the arch rib support frame and are used to pre-limit the installation position of the arch rib segment. The arch foot is connected to both ends of the bridge deck. The arch rib support frame is installed on the bridge deck and is used to provide support for the installation of the arch rib segment. The wedge-shaped guide plate is at least one strip steel plate with an arc-shaped edge, and its arc-shaped edge is consistent with the line shape of the upper opening of the inner diameter of the arch rib segment to be installed. The arc-shaped limiting plate is a single-leaf hyperboloid steel plate, the shape of which is consistent with the outer diameter of the arch rib segment to be installed, and is located at the lower ends of both ends of the arch rib segment to be installed.

[0006] According to the auxiliary structure for installing the arch rib segment of the tie-rod arch provided by this utility model, the specific installation positions of the wedge-shaped guide plate and the arc-shaped limiting plate are determined by the linear guidance of the arch rib segment layout using a total station.

[0007] According to the present invention, an auxiliary structure for installing the arch rib segment of a tie-rod arch is provided, wherein the wedge-shaped guide plate and the arch rib segment are made of the same steel plate.

[0008] According to the present invention, an auxiliary structure for installing the arch rib segment of a tie-rod arch is provided, wherein the wedge-shaped guide plate includes one end of an arc-shaped edge connected to the arch foot, and the other end is a wedge-shaped structure used to guide the installation of the arch rib segment.

[0009] According to the present invention, an auxiliary structure for installing the arch rib segment of a tie-rod arch is provided, wherein the arc-shaped limiting plate and the arch rib segment are made of the same steel plate.

[0010] According to the auxiliary structure for installing the rib segment of the tie-rod arch provided by this utility model, the central angle corresponding to the arc-shaped cross section of the arc-shaped limiting plate is between 100° and 150°.

[0011] According to the present invention, an auxiliary structure for installing the rib segment of a tie-rod arch is provided, wherein a cross base is also connected to the rib support frame, the lower end of the cross base is connected to the rib support frame, and the upper end is connected to the arc-shaped limiting plate.

[0012] According to the auxiliary structure for installing the rib section of the tie rod arch provided by this utility model, the upper end of the cross base is milled with a groove, and the groove fits with the arc-shaped limiting plate.

[0013] The advantages of this utility model are: 1. The tie-rod arch rib segment installation auxiliary structure of this utility model can assist the crane in adjusting the position of the arch rib, improve the installation accuracy, ensure that the bridge alignment meets the specifications, speed up the construction, and ensure the smooth progress of the project; 2. The specific installation positions of the wedge-shaped guide plate and the arc-shaped limiting plate of this utility model are determined by layout using a total station, which ensures the accuracy of the specific installation positions of the wedge-shaped guide plate and the arc-shaped limiting plate, and provides a guarantee for the accuracy of the arch rib segment installation; 3. The wedge-shaped guide plate and the arc-shaped limiting plate of this utility model are made of steel plates from the same arch rib segment, which can be used locally and save costs. 4. One end of the wedge-shaped guide plate of this utility model has a wedge-shaped structure, which is conducive to the insertion of the wedge-shaped guide plate into the arch rib segment and facilitates the connection between the arch rib segment and the arch foot. 5. The central angle of the arc-shaped cross section of the arc-shaped limiting plate of this utility model is between 100° and 150°, which is beneficial to improve the limiting ability of the arc-shaped limiting plate and avoid the arc of the arc-shaped limiting plate being too small, thus losing the ability to limit the installation position of the arch rib segment. At the same time, it also avoids the arc of the arc-shaped limiting plate being too large, which would cause the arch rib segment to be unable to fall on the arc-shaped limiting plate during installation. 6. The cross base of this utility model can increase the contact area between the arc-shaped limiting plate and the arch rib support frame, thereby increasing the connection strength between the arc-shaped limiting plate and the arch rib support frame, and ensuring that the arc-shaped limiting plate and the arch rib support frame have sufficient support strength when the arch rib segment is installed. 7. The upper end of the cross base of this utility model is milled with a groove, which fits with the arc-shaped limiting plate, further enhancing the connection strength between the cross base and the arc-shaped limiting plate, and preventing the arc-shaped limiting plate from tipping over and detaching from the cross base when the arch rib segment is installed. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is an overall schematic diagram of the auxiliary structure for installing the tie-rod arch rib segment of this utility model; Figure 2 This is a schematic diagram of the structure of the wedge-shaped guide plate of this utility model; Figure 3 This is a schematic diagram of the arc-shaped limiting plate of this utility model; Figure 4 This is a schematic diagram of the cross-shaped base of this utility model; Wherein: 1-wedge-shaped guide plate; 2-arc-shaped limiting plate; 3-arch foot; 4-arch rib support frame; 41-cross base; 5-arch rib segment. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] This utility model provides an auxiliary structure for the installation of arch rib segments in a tied arch. Compared with the prior art, the auxiliary structure of this utility model can assist the crane in adjusting the position of the arch ribs, ensuring installation accuracy, making the bridge alignment meet the specifications, accelerating the construction speed, and ensuring the smooth progress of the project.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] A tie-arch rib segment installation auxiliary structure, specifically, such as Figure 1 , 2 As shown, it includes: The bridge deck includes a wedge-shaped guide plate 1 and at least two arc-shaped limiting plates 2. The wedge-shaped guide plate 1 is connected to the arch foot 3 and is used to guide the arch rib segment 5 to connect with the arch foot 3. The arc-shaped limiting plates 2 are connected to the arch rib support frame 4 and are used to limit the installation position of the arch rib segment 5 in advance. The arch foot 3 is connected to both ends of the bridge deck. The arch rib support frame 4 is installed on the bridge deck and is used to provide support for the installation of the arch rib segment 5. The wedge-shaped guide plate 1 is at least one strip steel plate with an arc-shaped edge, and its arc-shaped edge is consistent with the line shape of the upper opening of the inner diameter of the arch rib segment 5 to be installed; The arc-shaped limiting plate 2 is a single-leaf hyperboloid steel plate, the shape of which is consistent with the outer diameter of the arch rib segment 5 to be installed, and is located at the lower ends of both ends of the arch rib segment 5 to be installed.

[0022] Specifically, this embodiment is applicable to the installation of the tied arch rib segment 5 of a steel box girder tied arch bridge using an auxiliary crane, such as... Figure 1 As shown, arch feet 3 are installed at both ends of the bridge deck, and a mark is made on the center line of the upper opening of the arch feet 3. The wedge-shaped guide plate 1 is welded to the arch feet 3 according to the mark on the upper opening of the arch feet 3. Two arch rib support frames 4 are also erected on the bridge deck to provide support for the installation of the arch rib segments 5. Each arch rib support frame 4 is welded with an arc-shaped limiting plate 2. In this embodiment, as Figure 2 As shown, the wedge-shaped guide plate 1 is a strip steel plate with an arc-shaped upper edge. The arc-shaped edge is consistent with the line shape of the upper opening of the inner diameter of the arch rib segment 5. During installation, half of the arc-shaped edge is inserted into the arch foot 3 and welded to the upper opening of the arch foot 3. like Figure 3As shown, the arc-shaped limiting plate 2 is a single-leaf hyperboloid steel plate, and the shape of its curved surface is consistent with the lower openings at both ends of the arch rib segment 5. The inner diameter of the cross section of the arc-shaped limiting plate 2 is consistent with the outer diameter of the lower opening of the arch rib segment 5.

[0023] Preferably, in some embodiments, the specific installation positions of the wedge-shaped guide plate 1 and the arc-shaped limiting plate 2 are determined by linear guidance of the arch rib segment 5 laid out using a total station.

[0024] Specifically, the erection position of the arch rib support frame 4 is first determined according to the installation position of each arch rib segment 5 in the tie-rod arch drawing. The arch rib support frame 4 is erected by conventional scaffolding erection method. Then, the specific position of the arc-shaped limiting plate 2 is calculated according to the arch rib line shape, and the position and elevation of the front and rear ends of the arc-shaped limiting plate 2 on the arch rib support frame 4 are laid out by total station. Meanwhile, the center line of the arch rib of the arch foot 3 is laid out and marked using a total station, and then the wedge-shaped guide plate 1 is welded to the center line of the arch rib at the upper opening of the arch foot 3.

[0025] Preferably, in some embodiments, the wedge guide plate 1 and the arch rib segment 5 are made of the same steel plate. When manufacturing the arch rib segment 5, the arc shape of the upper edge of the corresponding wedge guide plate 1 is determined according to the upper edge line shape of the arch rib segment 5. Then, the corresponding wedge guide plate 1 is manufactured according to the determined upper edge arc shape. This not only improves construction efficiency but also saves production costs.

[0026] In some embodiments, the wedge-shaped guide plate 1 on the upper part is optimized, such as... Figure 2 As shown, the wedge-shaped guide plate 1 includes one end of an arc-shaped edge connected to the arch foot 3, and the other end is a wedge-shaped structure used to guide the installation of the arch rib segment 5.

[0027] Specifically, the end of the wedge-shaped guide plate 1 closest to the arch rib segment 5 is wedge-shaped, which reduces the contact area between the arch rib segment 5 and the wedge-shaped guide plate 1 during installation, making it easier for the wedge-shaped guide plate 1 to be inserted into the arch rib segment 5 and guide the arch rib segment 5 to connect with the arch foot 3.

[0028] Preferably, in some embodiments, the arc-shaped limiting plate 2 and the arch rib segment 5 are made of the same steel plate. When manufacturing the arch rib segment 5, the shape of the corresponding arc-shaped limiting plate 2 is determined according to the shape of the lower opening of the arch rib segment 5. Specifically, the outer diameter of the lower opening of the arch rib segment 5 is consistent with the inner diameter of the arc-shaped limiting plate 2, which facilitates the subsequent installation of the arch rib segment 5 with the arc-shaped limiting plate 2 and ensures the installation accuracy of the arch rib segment 5.

[0029] Preferably, in some embodiments, the central angle corresponding to the arc-shaped cross-section of the arc-shaped limiting plate 2 is between 100° and 150°. When the central angle corresponding to the arc-shaped cross-section of the arc-shaped limiting plate 2 is less than 100°, the arc of the arc-shaped limiting plate 2 is too small, which will result in insufficient limiting ability of the arc-shaped limiting plate 2, making it easy for the arch rib segment 5 to deviate in position during installation, and significantly reducing the installation accuracy. When the central angle corresponding to the arc-shaped cross-section of the arc-shaped limiting plate 2 is greater than 150°, the arc of the arc-shaped limiting plate 2 is too large, and at the same time, the upper opening of the arc-shaped limiting plate 2 is reduced, which will cause the arch rib segment 5 to be unable to fit with the arc-shaped limiting plate 2 during installation, hindering construction.

[0030] In some embodiments, the arch rib support frame 4 described above has been optimized, such as... Figure 1 As shown, a cross base 41 is also connected to the arch rib support frame 4. The lower end of the cross base 41 is connected to the arch rib support frame 4, and the upper end is connected to the arc-shaped limiting plate 2.

[0031] Specifically, the cross base 41 consists of two steel plates that intersect in a cross shape. Its lower end is welded to the arch rib support frame 4, and its upper end is welded to the arc-shaped limiting plate 2.

[0032] Preferably, in some embodiments, the upper end of the cross base 41 is milled with a groove that fits into the arc-shaped limiting plate 2.

[0033] Specifically, the tops of the two intersecting steel plates of the cross base 41 are milled according to the curved surface shape of the arc-shaped limiting plate 2 to form a steel plate base with an arc-shaped top and a flat bottom. The arc shape of the cross base 41 allows it to fit better with the arc-shaped limiting plate 2, further increasing the connection area between the cross base 41 and the arc-shaped limiting plate 2 and strengthening the connection strength between the cross base 41 and the arc-shaped limiting plate 2.

[0034] The specific construction of the auxiliary structure for installing the rib segment of a tied arch according to this application includes: Erect arch rib support frame 4. According to the construction drawings of the tied arch, determine the specific position of each arch rib segment 5, and erect arch rib support frame 4 under the corresponding arch rib segment 5. Specifically, according to the installation sequence of the arch rib segments 5, erect arch rib support frame 4 under both ends of each arch rib segment 5 in sequence. The arch rib support frame 4 is constructed according to the conventional scaffolding erection method. The height of the arch rib support frame 4 is determined according to the height of both ends of the arch rib segment 5. Install the arc-shaped limiting plate 2. Calculate the specific position of the arc-shaped limiting plate 2 according to the line shape of the arch rib segment 5. Lay out the position and elevation of the front and rear ends of the arc-shaped limiting plate 2 on the arch rib support frame 4 using a total station. Spot weld the arc-shaped limiting plate 2 to the cross base 41 on the arch rib support frame 4. Then measure the position of the front and rear ends of the arc-shaped limiting plate 2 and adjust the position of the arc-shaped limiting plate 2 until it matches the calculated position of the front and rear ends. After adjusting the position of the arc-shaped limiting plate 2, weld and fix the arc-shaped limiting plate 2 to the cross base 41 on the arch rib support frame 4. Install wedge-shaped guide plate 1, lay out the center line of the arch rib of the arch foot 3 using a total station and mark it, insert half of the wedge-shaped guide plate 1 including the arc edge into the inside of the center line of the arch rib of the arch foot 3, and weld the wedge-shaped guide plate 1 to the arch foot 3. Install the arch rib segment 5. Lift the arch rib segment 5 using a lifting machine, and then bring one end of the arch rib segment 5 close to the wedge-shaped guide plate 1 so that the end of the wedge-shaped guide plate 1, including the wedge structure, is inserted into the arch rib segment 5 until the arch rib segment 5 contacts the arch foot 3. Adjust the position of the arch rib segment 5 so that the lower ends of both ends of the arch rib segment 5 fit with the arc-shaped limiting plate 2. After adjusting the position of the arch rib segment 5, weld the arch rib segment 5 to the arch foot 3. Repeat the above steps until all arch rib segments 5 are installed.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary structure for installing the rib segments of a tied-arch system, characterized in that, include: A wedge-shaped guide plate (1) and at least two arc-shaped limiting plates (2) are provided. The wedge-shaped guide plate (1) is connected to the arch foot (3) to guide the arch rib segment (5) to connect with the arch foot (3). The arc-shaped limiting plates (2) are connected to the arch rib support frame (4) to pre-limit the installation position of the arch rib segment (5). The arch foot (3) is connected to both ends of the bridge deck. The arch rib support frame (4) is installed on the bridge deck to provide support for the installation of the arch rib segment (5). The wedge-shaped guide plate (1) is at least one strip steel plate with an arc-shaped edge, and its arc-shaped edge is consistent with the line shape of the upper opening of the inner diameter of the arch rib segment (5) to be installed. The arc-shaped limiting plate (2) is a single-leaf hyperboloid steel plate, whose curved surface is consistent with the shape of the outer diameter of the arch rib segment (5) to be installed, and is located at the lower ends of the arch rib segment (5) to be installed.

2. The auxiliary structure for installing the rib segment of a tied-arch as described in claim 1, characterized in that, The specific installation positions of the wedge-shaped guide plate (1) and the arc-shaped limiting plate (2) are determined by laying out the arch rib segment (5) linearly using a total station.

3. The auxiliary structure for installing the rib segment of a tied-arch as described in claim 2, characterized in that, The wedge-shaped guide plate (1) and the arch rib segment (5) are made of the same steel plate.

4. The auxiliary structure for installing the rib segment of a tied-arch as described in claim 3, characterized in that, The wedge-shaped guide plate (1) includes one end of an arc-shaped edge connected to the arch foot (3), and the other end is a wedge-shaped structure used to guide the installation of the arch rib segment (5).

5. The auxiliary structure for installing the rib segment of a tied-arch as described in claim 2, characterized in that, The arc-shaped limiting plate (2) and the arch rib segment (5) are made of the same steel plate.

6. The auxiliary structure for installing the rib segment of a tied-arch as described in claim 5, characterized in that, The central angle of the arc-shaped cross section of the arc-shaped limiting plate (2) is between 100° and 150°.

7. The auxiliary structure for installing the rib segment of a tied arch according to claim 1, characterized in that, The arch rib support frame (4) is also connected to a cross base (41), the lower end of which is connected to the arch rib support frame (4), and the upper end is connected to the arc-shaped limiting plate (2).

8. The auxiliary structure for installing the rib segment of a tied arch according to claim 7, characterized in that, The upper end of the cross base (41) is milled with a groove, which fits into the arc-shaped limiting plate (2).

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