Construction method for special-shaped rain shelter of three-limbed star-shaped pedestrian landscape bridge

Abstract

The present application discloses a construction method for a special-shaped rain shelter of a three-limbed star-shaped pedestrian landscape bridge. First, a temporary support is erected at the center of the pedestrian landscape bridge, and a plurality of regulators are installed at the top of the temporary support; then the central connection part is hoisted onto the regulators, and then the central connection part is adjusted to the designed installation position through the regulators, and then the central connection part is welded to the arch limb; afterwards, both ends of the central support are connected to one side of the adjacent arch limbs and cross over from above one of the arch limbs, and the central support is connected to the central connection part; taking the central connection part and the end part of the arch limb as the reference benchmarks, the installation position of the arch limb support is determined, and then the arch limb support is installed at the corresponding installation position, and one end of the arch limb support is connected to one side of the arch limb; then the arch limb connection part is installed on the arch limb support, one side of the arch limb connection part is connected to one side of the arch limb, and the adjacent two sections of arch limb connection parts are welded to each other. The present application has the effect of improving the installation efficiency of the rain shelter.

Description

Technical Field

[0001] The present invention relates to the technical field of the construction of a canopy for a pedestrian bridge, and more particularly to a construction method for a special-shaped canopy of a three-limbed star-shaped pedestrian landscape bridge. Background Art

[0002] According to the design requirements, the canopy of the three-limbed star-shaped pedestrian landscape bridge is symmetrically arranged with respect to the center of the three-limbed star-shaped pedestrian landscape bridge. The canopy is installed after the steel beam of the three-limbed star-shaped pedestrian landscape bridge is tensioned prestressed to arch. The prestress tension of the steel beam mainly controls the magnitude of the prestress. When the prestress tension of the steel beam reaches the design requirements, the prestress tension is stopped, and the arch height and arc of the steel beam are not controlled. Therefore, the accuracy of the steel beam after arching is poor. The canopy is prefabricated in segments according to the designed shape. After the steel beam arches, due to the large errors in the height and arc of the steel beam, it may cause misalignment during the installation docking of the canopy, resulting in difficult installation of the canopy and reduced installation efficiency of the canopy. Summary of the Invention

[0003] In order to improve the installation efficiency of the canopy, the present application provides a construction method for a special-shaped canopy of a three-limbed star-shaped pedestrian landscape bridge.

[0004] A construction method for a special-shaped canopy of a three-limbed star-shaped pedestrian landscape bridge provided by the present application adopts the following technical solutions:

[0005] A construction method for a special-shaped canopy of a three-limbed star-shaped pedestrian landscape bridge, the special-shaped canopy includes a central connection part and three arch limb connection parts. The central connection part is arranged above the center of the three-limbed star-shaped pedestrian landscape bridge. The three arch limb connection parts correspond to the three arch limbs of the three-limbed star-shaped pedestrian landscape bridge one by one. The arch limb connection part is arranged above the arch limb. The width of the arch limb connection part gradually increases from the end of the arch limb to the center of the three-limbed star-shaped pedestrian landscape bridge. One side of the arch limb connection part is connected to one side of the arch limb, and the other side of the arch limb connection part is suspended. One end of the arch limb connection part is connected to the central connection part;

[0006] The construction method for the special-shaped canopy includes the following steps:

[0007] Install a temporary support: Set up a temporary support at the center of the pedestrian landscape bridge. A plurality of regulators are installed on the top of the temporary support, and the height of the regulator is higher than the installation height of the designed central connection part;

[0008] Install the central connection part: Lift the central connection part to the regulator, then adjust the central connection part to the designed installation position through the regulator, and then weld the central connection part to the arch limb;

[0009] Install the central support: Both ends of the central support are connected to one side of the adjacent arch limbs and span over one of the arch limbs, and the central support is connected to the central connection part;

[0010] Install the arch limb support: With the central connection part and the end of the arch limb as the reference benchmarks, determine the installation position of the arch limb support, and then install the arch limb support to the corresponding installation position. One end of the arch limb support is connected to one side of the arch limb, and the other end of the arch limb support hangs above the arch limb;

[0011] Install the arch limb connection part: The arch limb connection part is installed in sections. The arch limb connection part is installed on the arch limb support. One side of the arch limb connection part is connected to one side of the arch limb, and the other side of the arch limb connection part extends above the arch limb. Adjacent two sections of the arch limb connection parts are welded to each other.

[0012] By adopting the above technical solutions, the canopy of the present application has an opening on one side at each of the three arch limbs and is supported only on one side, which can improve the light on the landscape bridge while maintaining the stable support of the canopy; since the central support is installed after the central connection part, the installation of the central connection part is not affected by the central support and can be installed according to the designed position. Then, the installation position or structure of the central support is adjusted correspondingly according to the installation situation of the central connection part to meet the function of supporting the central connection part, thereby reducing the influence of the error of the steel beam on the installation of the central connection part; and the installation position of the arch limb support is determined with the central connection part and the end of the arch limb as the reference benchmarks, and the arch limb connection part can be smoothly docked along the arch limb support, which is convenient for the installation of the arch limb connection part and improves the installation efficiency of the arch limb connection part.

[0013] Preferably, after the central connection part is welded to the arch limb, first draw a marking line on the installation position of the central support and measure, and then prefabricate the central support according to the measurement result, and the central support is installed along the marking line.

[0014] By adopting the above technical solutions, the central support is prefabricated according to the measurement result, and the central support can better match the central connection part, and the marking line is convenient for the installation positioning of the central support.

[0015] Preferably, after determining the installation position of the arch limb support, pull multiple strings along the bottom contour of the designed arch limb connection part. When installing the arch limb support, the arch limb support is installed with the assistance of the strings.

[0016] By adopting the above technical solutions, the bottom contour of the designed arch limb connection part is visualized by using the strings, which is convenient for the positioning of the arch limb support.

[0017] Preferably, when pulling the cord, a plurality of special-shaped rods are installed at intervals, each of the special-shaped rods is connected to all the cords, the special-shaped rods are connected to the arch limb through struts, and the special-shaped rods avoid the installation positions of the arch limb brackets.

[0018] By adopting the above technical solution, the special-shaped rod keeps the cord maintaining the bottom contour of the arch limb connecting part, and then changes the height of each cord through the strut, so that the cord presents the bottom contour of the arch limb connecting part.

[0019] Preferably, the method for the cord to assist in the installation of the arch limb bracket is as follows: one end of the arch limb bracket abuts against the installation position on one side of the arch limb, and then the distances between the arch limb bracket and a plurality of the cords are measured respectively; if the distances between the arch limb bracket and a plurality of the cords are all less than the set value, the arch limb bracket and the arch limb are fixedly connected; if the distance between the arch limb bracket and one of the cords is greater than or equal to the set value, the position of the arch limb bracket is adjusted, and the distances between the arch limb bracket and a plurality of the cords are measured again until the distances between the arch limb bracket and a plurality of the cords are all less than the set value.

[0020] By adopting the above technical solution, due to the camber error of the steel beam, after the arch limb bracket is installed on the steel beam, errors are likely to occur accordingly. The conventional method is to use surveying instruments to assist in the positioning of the arch limb bracket. However, the shape of the canopy in this application is special-shaped, and there are many points to be measured when using surveying instruments, resulting in low efficiency. In this application, it is more convenient and fast to measure the distances between the arch limb bracket and a plurality of cords respectively, which can quickly locate the arch limb bracket and improve the installation efficiency of the arch limb bracket.

[0021] Preferably, a measuring rod is used to measure the distance between the arch limb bracket and the cord, and the length of the measuring rod is equal to the set value.

[0022] By adopting the above technical solution, during measurement, the measuring rod is vertically placed between the arch limb bracket and the cord. If the two ends of the measuring rod cannot simultaneously contact the arch limb bracket and the cord, it means that the distance between the arch limb bracket and the cord is less than the set value. If the two ends of the measuring rod simultaneously contact the arch limb bracket and the cord, it means that the distance between the arch limb bracket and the cord is greater than or equal to the set value, which is convenient for measurement.

[0023] Preferably, a positioning plate is connected to the lower end of the measuring rod, the lower end surface of the measuring rod is flush with the lower surface of the positioning plate, and the lower surface of the positioning plate matches the outer wall of the arch limb bracket and can closely adhere to the outer wall of the arch limb bracket.

[0024] By adopting the above technical solution, during measurement, the lower surface of the positioning plate is attached to the outer wall of the arch limb bracket, and the measuring rod can be kept perpendicular to the arch limb bracket, which is convenient for the measurement of the measuring rod.

[0025] Preferably, the arch limb connecting part is constructed simultaneously in two directions, namely from the end of the arch limb towards the central connecting part and from the central connecting part towards the end of the arch limb.

[0026] By adopting the above technical solution, due to the high installation accuracy of the arch limb support and the high installation accuracy of the arch limb connecting part in this application, constructing simultaneously from both ends towards the middle can also ensure the smooth closure of the arch limb connecting part, and constructing simultaneously from both ends towards the middle can improve the construction efficiency.

[0027] In summary, this application at least includes the following beneficial technical effects: First, the central connecting part is assisted in installation by a temporary support, and then, with the central connecting part and the end of the arch limb as the reference benchmarks, the installation position of the arch limb support is determined, thereby reducing the adverse impact of the error of the steel beam on the installation of the canopy, enabling the smooth installation and docking of the arch limb connecting part, and improving the installation efficiency of the canopy. Description of the Drawings

[0028] Figure 1 is the effect diagram after the installation of the special-shaped canopy of the three-limb star-shaped pedestrian landscape bridge in the embodiment of this application is completed.

[0029] Figure 2 is the construction schematic diagram of the special-shaped canopy of the three-limb star-shaped pedestrian landscape bridge in the embodiment of this application.

[0030] Figure 3 is the construction schematic diagram of the arch limb support in the embodiment of this application.

[0031] Figure 4 is the cross-sectional schematic diagram of the measuring rod in the embodiment of this application.

[0032] Description of the Reference Numerals:

[0033] 1. Central connecting part; 2. Arch limb connecting part; 3. Central support; 4. Arch limb support; 5. Temporary support; 6. Bracing rod; 7. String; 8. Special-shaped rod; 9. Positioning plate; 10. Measuring rod. Detailed Description of the Embodiment

[0034] The following further describes this application in detail Figures 1-4 with reference to the attached

[0035] The embodiment of this application discloses a construction method for a special-shaped canopy of a three-limb star-shaped pedestrian landscape bridge.

[0036] Refer to Figure 1, the special-shaped canopy of this embodiment is installed on a three-limbed star-shaped pedestrian landscape bridge. The special-shaped canopy includes a central connection part 1 and three arch connection parts 2. The central connection part 1 is integrally prefabricated and hoisted. The central connection part 1 is arranged above the center of the three-limbed star-shaped pedestrian landscape bridge. The central connection part 1 is fixedly connected to the three arches of the three-limbed star-shaped pedestrian landscape bridge through a central support 3. The central support 3 is arranged below the central connection part 1. The central support 3 is made by bending and cutting a steel pipe. There are three central supports 3. The three central supports 3 respectively correspond to the three sides of the central connection part 1. For the central support 3, both ends of the central support 3 are respectively connected to one side of the adjacent two arches in the clockwise or counterclockwise direction. The central support 3 is closely attached to the lower surface of the central connection part 1 and is fixedly connected to the central connection part 1. The arch connection part 2 is prefabricated in sections and hoisted in sections. The three arch connection parts 2 correspond one by one to the three arches of the three-limbed star-shaped pedestrian landscape bridge. The arch connection part 2 is arranged above the arch. The width of the arch connection part 2 gradually increases from the end of the arch to the center of the three-limbed star-shaped pedestrian landscape bridge. One end of the arch connection part 2 is fixedly welded to the end of the arch. The other end of the arch connection part 2 is butted against the central connection part 1 and is fixedly welded to the central connection part 1. The arch connection part 2 is fixedly welded to one side of the arch through an arch support 4. The other side of the arch connection part 2 is suspended above the arch. The arch support 4 is arranged below the arch connection part 2. The arch support 4 is closely attached to the lower surface of the arch connection part 2 and is fixedly connected to the arch connection part 2. The arch support 4 is made of steel pipe. The number of arch supports 4 is determined according to the actual design requirements. Each section of the arch connection part 2 is connected to at least one arch support 4. The arch support 4 matches the lower surface of the arch connection part 2 at the place where it is closely attached.

[0037] Refer to Figure 1 and Figure 2 , the construction method of the special-shaped canopy of the three-limbed star-shaped pedestrian landscape bridge in the embodiment of the present application includes the following steps:

[0038] Install the temporary support 5: Set up the temporary support 5 at the center of the pedestrian landscape bridge. The temporary support 5 is a scaffold. A plurality of regulators are installed on the top of the temporary support 5. The regulators are three-way jacks. The height of the regulators is higher than the installation height of the designed central connection part 1.

[0039] Install the central connection part 1: Lift the central connection part 1 onto the regulator, and then adjust the height, angle and horizontal position of the central connection part 1 through the regulator so that the three sides of the central connection part 1 respectively abut against one side of the three arches, and then weld and fix the central connection part 1 to the arch.

[0040] Install the central support 3: Mark and measure the installation position of the central support 3, then fabricate the central support 3 according to the measurement results, and then install the central support 3 along the marked line. The central support 3 is fixedly welded to the central connection part 1. Both ends of the central support 3 are connected to one side of the adjacent arch limbs and cross over from above one of the arch limbs, and the central support 3 improves the support stability of the central connection part 1.

[0041] Install the arch limb support 4: Taking the central connection part 1 and the ends of the arch limbs as the reference benchmarks, number the connecting parts 2 of each section of the arch limbs, determine the installation positions of the connecting parts 2 of each section of the arch limbs, and set at least one installation position of the arch limb support 4 at the installation position of each section of the connecting part 2 of the arch limbs. Then install the arch limb support 4 to the corresponding installation position. One end of the arch limb support 4 is connected to one side of the arch limb, and the other end of the arch limb support 4 hangs above the arch limb.

[0042] Install the connecting part 2 of the arch limbs: The connecting part 2 of the arch limbs is installed in sections. The connecting part 2 of the arch limbs is installed on the arch limb support 4. One side of the connecting part 2 of the arch limbs is connected to one side of the arch limb, and the other side of the connecting part 2 of the arch limbs extends above the arch limb. The adjacent two sections of the connecting part 2 of the arch limbs are welded to each other. After all the connecting parts 2 of the three arch limbs are installed, then remove the temporary support 5.

[0043] Refer to Figure 2 and Figure 3 , after determining the installation position of the arch limb support 4, pull multiple wire ropes 7 along the bottom contour of the designed connecting part 2 of the arch limbs, and assist in the installation of the arch limb support 4 through the wire ropes 7. The wire ropes 7 are made of nylon ropes, and the diameter of the wire ropes 7 is less than 0.2 mm. When pulling the wire ropes 7, install multiple special-shaped rods 8 at intervals. Each special-shaped rod 8 is connected to all the wire ropes 7, and use plate straps to bind the wire ropes 7 to the special-shaped rods 8. The special-shaped rods 8 can keep the distance between the wire ropes 7 stable. The special-shaped rods 8 are connected to the arch limbs through the support rods 6. The special-shaped rods 8 avoid the installation positions of the arch limb supports 4. The lower end of the support rod 6 is connected to a sandbag or a water horse, and the support rod 6 is kept stable on the arch limb through the sandbag or the water horse. The height of the special-shaped rod 8 can be changed through the support rod 6, so as to change the height of the wire ropes 7 to match the bottom contour of the connecting part 2 of the arch limbs.

[0044] The method for the wire ropes 7 to assist in the installation of the arch limb support 4 is as follows: One end of the arch limb support 4 abuts against the installation position on one side of the arch limb, and then measure the distances between the arch limb support 4 and multiple wire ropes 7 respectively. If the distances between the arch limb support 4 and multiple wire ropes 7 are all less than 2 mm, then weld and fix the arch limb support 4 and the arch limb; if the distance between the arch limb support 4 and one of the wire ropes 7 is greater than or equal to 2 mm, then adjust the position of the arch limb support 4, and measure the distances between the arch limb support 4 and multiple wire ropes 7 again until the distances between the arch limb support 4 and multiple wire ropes 7 are all less than 2 mm.

[0045] Refer toFigure 4 , use the measuring rod 10 to measure the distance between the arch limb support 4 and the wire rope 7. The length of the measuring rod 10 is 2 mm. A positioning plate 9 is connected to the lower end of the measuring rod 10. The cross-section of the positioning plate 9 is semi-circular. The lower end surface of the measuring rod 10 is flush with the inner wall of the positioning plate 9. The lower surface of the positioning plate 9 is arc-shaped and matches the outer wall of the arch limb support 4. During measurement, the lower surface of the positioning plate 9 is closely attached to the outer wall of the arch limb support 4, and then the positioning plate 9 is rotated along the outer wall of the arch limb support 4. If the measuring rod 10 touches the wire rope 7, it means that the distance between the arch limb support 4 and the wire rope 7 is greater than or equal to 2 mm. If the measuring rod 10 does not touch the wire rope 7, it means that the distance between the arch limb support 4 and the wire rope 7 is less than 2 mm.

[0046] It should be noted that the arch limb connection part 2 of the embodiment of the present application is constructed in two directions simultaneously, from the end of the arch limb to the central connection part 1 and from the central connection part 1 to the end of the arch limb, so as to shorten the construction period of the canopy.

[0047] The implementation principle of the construction method of the special-shaped canopy of a three-limb star-shaped pedestrian landscape bridge in the embodiment of the present application is as follows: Since the central support 3 is installed after the central connection part 1, the installation of the central connection part 1 is not affected by the central support 3 during installation, thereby reducing the influence of the camber height deviation of the steel beam of the pedestrian landscape bridge on the installation of the central connection part 1, so that the central connection part 1 can be installed at the designed position. And the central support 3 has a simple structure and can be manufactured quickly. The later manufactured central support 3 can be changed according to the installation situation of the central connection part 1, so that the central support 3 completely matches the central connection part 1, improving the installation efficiency of the central connection part 1. The installation position of the arch limb support 4 is determined with reference to the central connection part 1 and the end of the arch limb. The arch limb connection part 2 can be smoothly docked along the arch limb support 4, which is convenient for the installation of the arch limb connection part 2 and improves the installation efficiency of the arch limb connection part 2.

[0048] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A construction method for a special-shaped awning of a three-limb star-shaped pedestrian landscape bridge, characterized in that: The special-shaped awning includes a central connection part (1) and three arch limb connection parts (2). The central connection part (1) is arranged above the center of the three-limb star-shaped pedestrian landscape bridge. The three arch limb connection parts (2) correspond to the three arch limbs of the three-limb star-shaped pedestrian landscape bridge one by one. The arch limb connection part (2) is arranged above the arch limb. The width of the arch limb connection part (2) gradually increases from the end of the arch limb to the center of the three-limb star-shaped pedestrian landscape bridge. One side of the arch limb connection part (2) is connected to one side of the arch limb, and the other side of the arch limb connection part (2) is suspended. One end of the arch limb connection part (2) is connected to the central connection part (1); The construction method of the special-shaped awning includes the following steps: Install the temporary support (5): Set up the temporary support (5) at the center of the pedestrian landscape bridge. A plurality of regulators are installed on the top of the temporary support (5), and the height of the regulator is higher than the installation height of the designed central connection part (1); Install the central connection part (1): Lift the central connection part (1) to the regulator, then adjust the central connection part (1) to the designed installation position through the regulator, and then weld the central connection part (1) to the arch limb; Install the central support (3): Both ends of the central support (3) are connected to one side of the adjacent arch limbs and cross over from above one of the arch limbs. The central support (3) is connected to the central connection part (1); Install the arch limb support (4): Taking the central connection part (1) and the end of the arch limb as the reference benchmarks, determine the installation position of the arch limb support (4), and then install the arch limb support (4) to the corresponding installation position. One end of the arch limb support (4) is connected to one side of the arch limb, and the other end of the arch limb support (4) is suspended above the arch limb; Install the arch limb connection part (2): The arch limb connection part (2) is installed in sections. The arch limb connection part (2) is installed on the arch limb support (4). One side of the arch limb connection part (2) is connected to one side of the arch limb, and the other side of the arch limb connection part (2) extends above the arch limb. Adjacent two sections of the arch limb connection part (2) are welded to each other; After determining the installation position of the arch limb support (4), pull multiple wire ropes (7) along the bottom contour of the designed arch limb connection part (2). When installing the arch limb support (4), assist in installing the arch limb support (4) through the wire ropes (7); When pulling the wire ropes (7), install multiple special-shaped rods (8) at intervals. Each special-shaped rod (8) is connected to all the wire ropes (7). The special-shaped rod (8) is connected to the arch limb through a support rod (6). The special-shaped rod (8) avoids the installation position of the arch limb support (4).

2. The construction method for a special-shaped awning of a three-limb star-shaped pedestrian landscape bridge according to claim 1, characterized in that: After the central connection part (1) is welded to the arch limb, first mark the installation position of the central support (3) and measure it, and then prefabricate the central support (3) according to the measurement results. The central support (3) is installed along the marked line.

3. A construction method for a special-shaped awning of a three-limb star-shaped pedestrian landscape bridge according to claim 1, characterized in that the method for the wire rope (7) to assist in the installation of the arch limb support (4) is as follows: one end of the arch limb support (4) abuts against the installation position on one side of the arch limb, and then the distances between the arch limb support (4) and multiple wire ropes (7) are measured respectively; if the distances between the arch limb support (4) and multiple wire ropes (7) are all less than the set value, then fixedly connect the arch limb support (4) and the arch limb; if the distance between the arch limb support (4) and one of the wire ropes (7) is greater than or equal to the set value, then adjust the position of the arch limb support (4), and measure the distances between the arch limb support (4) and multiple wire ropes (7) again until the distances between the arch limb support (4) and multiple wire ropes (7) are all less than the set value.

4. A construction method for a special-shaped awning of a three-limb star-shaped pedestrian landscape bridge according to claim 3, characterized in that: A measuring rod (10) is used to measure the distance between the arch limb support (4) and the wire rope (7), and the length of the measuring rod (10) is equal to the set value.

5. A construction method for a special-shaped awning of a three-limb star-shaped pedestrian landscape bridge according to claim 4, characterized in that: A positioning plate (9) is connected to the lower end of the measuring rod (10), the lower end surface of the measuring rod (10) is flush with the lower surface of the positioning plate (9), and the lower surface of the positioning plate (9) matches the outer wall of the arch limb support (4) and can closely adhere to the outer wall of the arch limb support (4).

6. A construction method for a special-shaped awning of a three-limb star-shaped pedestrian landscape bridge according to claim 3, characterized in that: The arch limb connection part (2) is constructed simultaneously in two directions, from the end of the arch limb to the central connection part (1) and from the central connection part (1) to the end of the arch limb.

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