Tensioning platform hanging bracket suitable for pi-shaped pier

Abstract

The utility model discloses a tensioning platform hanging bracket suitable for Pi-shaped piers, which comprises a frame, a stand column, an upper frame, a reinforcing inclined strut, a guardrail, a top support, a ladder stand, a bottom plate, a stiffening plate and a safety net, the lower frame comprises a lower long rod, an edge lower short rod, a middle lower short rod and a bottom short rod, and the upper frame comprises an upper long rod, an upper short rod, a connecting cross rod and a lifting lug. The guardrail is composed of guardrail vertical rods and guardrail inclined rods. The jacking is composed of a large base plate, a small base plate, a bolt and an adjustable lead screw. After being assembled and welded through a crane, the device is installed on the pi-shaped pier cross beam, the occupied space is small, extra land is not needed, and the space applicability is wide; the safety is effectively guaranteed, meanwhile, the structure is firm, disassembly is convenient, installation is rapid, stress is definite, the working efficiency is further improved, the construction progress can be effectively accelerated, the construction quality is guaranteed, and time, manpower and construction cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, and in particular to a tensioning platform hanger suitable for π-shaped piers. Background Technology

[0002] As the supporting structure of the bridge beams, the construction quality of bridge piers is of paramount importance. There are various types of bridge pier designs. Currently, most municipal bridges and bridges that combine road and rail use the π-shaped pier structure, which means that the horizontal beams of the pier have cantilevered sections extending from both ends, forming an overall π shape. π-shaped piers usually have a prestressed structure inside, with the prestressing material arranged laterally within the horizontal beams of the π-shaped pier. After the concrete construction is completed, the prestressing material needs to be tensioned.

[0003] Traditionally, tensioning of π-shaped piers requires the erection of tensioning supports at the bottom of the cantilever section. Construction workers then tension the prestress on the cantilever sections at both ends of the crossbeam using these supports. However, the manufacturing of tensioning supports requires a significant amount of steel, resulting in high costs. Furthermore, the erection of tensioning supports is complex and time-consuming. Additionally, some projects have access roads next to the piers for the passage of materials, equipment, and personnel, making it impossible to erect tensioning supports for construction. Summary of the Invention

[0004] The purpose of this utility model is to provide a tensioning platform hanger suitable for π-shaped piers. It is made of welded material, which effectively ensures safety while being structurally robust, easy to disassemble, and quick to install, thereby improving work efficiency, accelerating construction progress, ensuring construction quality, and saving construction costs.

[0005] The purpose of this utility model is achieved as follows:

[0006] A tensioning platform hanger suitable for π-shaped piers is characterized by comprising a lower frame, columns, an upper frame, reinforcing diagonal braces, guardrails, top supports, ladders, a base plate, and a safety net. The lower and upper frames, which are both rectangular and placed parallel to each other, are connected together by six vertical columns. Reinforcing diagonal braces are arranged between the upper frame and the columns, and between the lower frame and the columns. Ladders connecting the lower and upper frames are provided on the right side of the lower frame and the right side of the upper frame. Guardrails are provided on the top of the lower frame and the top of the upper frame. A top support for supporting the side of the crossbeam is provided in the middle of each column. A base plate is provided on the top of the lower frame, at the top of the ladder where it is suspended from the edge of the pier, and at the bottom of the ladder. A safety net is installed at the bottom of the ladder.

[0007] Furthermore, the lower frame consists of lower long rods, edge lower short rods, middle lower short rods, and bottom short rods. The lower long rods are double channel steel with interlocking ends, and are arranged below the ends of the crossbeams of the π-shaped pier, with two rods symmetrically arranged around the central axis of the side of the crossbeams of the π-shaped pier. The edge lower short rods are channel steel, and there are two edge lower short rods in total. The two ends of each edge lower short rod are welded to the same side ends of the two lower long rods to form a rectangular structure. The middle lower short rods are evenly arranged longitudinally in the middle of the rectangular structure formed by the edge lower short rods and the lower long rods, connecting the two lower long rods. The bottom short rods are connected between the middle lower short rods and the edge lower short rods, or between two adjacent middle lower short rods, with a spacing of 50m, and are evenly arranged in parallel.

[0008] Furthermore, the columns are double-channel steel interlocking, with six columns symmetrically arranged around the central axis of the side of the π-shaped pier. The horizontal distance from the edge of the π-shaped pier is at least 30m to the left and right. Two of the columns are located at the corners of the lower frame near the center of the π-shaped pier, and the positions of the remaining four columns are determined according to the actual position of the π-shaped pier's pad stone. The longitudinal distance from the pad stone is at least 20m to the left and right.

[0009] Furthermore, the upper frame consists of upper long rods, upper short rods, connecting crossbars, and lifting lugs. The upper long rods are double-channel steel with interlocking ends, and two upper long rods are arranged symmetrically parallel to each other with the side centerline of the π-shaped pier as the center. The upper short rods are also double-channel steel with interlocking ends, and two are arranged in total. The two ends of each upper short rod are welded to the same side ends of the two upper long rods to form a rectangular structure. The connecting crossbars are made of I-beams, and two connecting crossbars are arranged symmetrically with the side centerline of the π-shaped pier as the center, 20m away from the edge of the pier top. The lifting lugs are composed of multiple sets of 10mm steel plates, and the lifting lugs are arranged symmetrically with the side centerline of the π-shaped pier at the upper short rods, with two lifting lugs on each upper short rod. The spacing ratio of the lifting lugs on the upper short rods is 1:5:4.

[0010] Furthermore, reinforced diagonal bracing is arranged between the upper frame and the columns, and between the lower frame and the columns. The reinforced diagonal bracing is symmetrically arranged and is made of channel steel.

[0011] Furthermore, the guardrail consists of straight guardrail bars and diagonal guardrail bars, with a height of 1.2m. The two ends of the guardrail are welded to the posts; a safety net is laid behind the guardrail.

[0012] Furthermore, the top support consists of a large pad, a small pad, bolts, and an adjustable threaded rod. The top support is arranged on the column, with four symmetrically arranged around the central axis of the π-shaped pier.

[0013] Furthermore, the base plate is a 3 mm patterned steel plate, which is placed on the lower frame as a whole, at the top of the ladder where it is suspended from the edge of the pier, and at the short bar at the bottom of the ladder.

[0014] Furthermore, stiffening plates are arranged at the connection points between the column and the lower long rod, and between the column and the upper short rod, and the stiffening plates are 10mm steel plates.

[0015] Furthermore, the length of the upper pole must be greater than the width of the π-shaped pier by 40m to ensure sufficient space for construction operations.

[0016] Furthermore, after the lower long rod is placed behind the π-shaped pier, the length of the cantilever protruding from the π-shaped pier in the horizontal direction must be 1m.

[0017] Furthermore, the lower long pole, upper long pole, upper short pole, and upright are all double channel steel interlocking structures; the middle lower short pole is made of I-beams; and the edge lower short poles, reinforcing diagonal braces, and ladder uprights are made of channel steel.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. After being assembled and welded by a crane, it is installed on the crossbeam of the π-shaped pier. It occupies little space, does not require construction access roads or additional land, has a wide range of spatial applicability, can effectively speed up the construction progress, ensure construction quality, and improve work efficiency.

[0020] 2. The steel section is assembled and welded, making installation simple and quick, disassembly convenient, reducing steel input, and saving construction time, manpower and construction costs;

[0021] 3. The structure is robust, easy to operate, safe and reliable, and the force distribution is clearly defined;

[0022] 4. Guardrails and safety nets are provided to ensure construction safety. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a side view of the lower frame and the guardrail;

[0025] Figure 3 for Figure 1 A cross-sectional view of the top support position on the left side of the middle section;

[0026] Figure 4 for Figure 1 A cross-sectional view of the top support position on the right side of the middle section;

[0027] Figure 5 for Figure 1 Cross-sectional diagram of the middle ladder;

[0028] Figure 6 for Figure 1 Top view of the upper middle frame;

[0029] Figure 7 for Figure 1 Top view of the lower middle frame;

[0030] Figure 8 This is a side view of the top support according to an embodiment of the present utility model;

[0031] Figure 9 This is a top view diagram of the top support according to an embodiment of the present utility model;

[0032] Figure 10 for Figure 1 Rear view;

[0033] Figure 11 This is an elevation view of the ladder;

[0034] Figure 12 This is a frontal view of an embodiment of the present utility model.

[0035] Attached reference numerals: A, π-shaped pier; B, crossbeam; C, pad stone; cavity; 1, lower frame; 2, column; 3, upper frame; 4, reinforcing diagonal brace; 5, guardrail; 6, top support; 7, ladder; 8, base plate; 9, stiffening plate; 10, safety net; 11, lower long pole; 12, edge lower short pole; 13, middle lower short pole; 14, short pole; 31, upper long pole; 32, upper short pole; 33, connecting crossbar; 34, lifting lug; 51, guardrail straight pole; 52, guardrail diagonal pole; 61, large pad; 62, small pad; 63, bolt; 64, adjustable threaded rod; 71, upright; 72, bottom crossbar; 73, bottom short pole; 74, protective short pole; 75, ladder short pole. Detailed Implementation

[0036] The present utility model patent will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] A tensioning platform hanger suitable for π-shaped piers includes a lower frame 1, columns 2, an upper frame 3, reinforcing diagonal braces 4, guardrails 5, top supports 6, ladders 7, a base plate 8, and a safety net 10. The lower frame 1 and upper frame 3, which are both rectangular and placed parallel to each other, are connected together by six vertical columns 2. The reinforcing diagonal braces 4 are arranged between the upper frame 3 and the columns 2, and between the lower frame 1 and the columns 2. A ladder 7 connecting the lower frame 1 and the upper frame 3 is provided on the right side of the lower frame 1 and the right side of the upper frame 3. Guardrails 5 are provided on the top of the lower frame 1 and the top of the upper frame 3, respectively. A top support 6 is provided in the middle of each column 2 to support the side of the crossbeam B. A base plate 8 is provided on the top of the lower frame 1, at the top of the ladder 7 where it is suspended from the edge of the pier, and at the bottom of the ladder 7. A safety net 10 is installed at the bottom of the ladder 7.

[0038] The lower frame 1 consists of a lower long rod 11, an edge lower short rod 12, a middle lower short rod 13, and a bottom short rod 14. The lower long rod 11 is a double channel steel with interlocking. The lower long rod 11 is arranged below the end of the crossbeam B of the π-shaped pier A, with two rods symmetrically arranged around the central axis of the side of the crossbeam B of the π-shaped pier A. The edge lower short rod 12 is a channel steel, with two rods arranged in total. The two ends of each edge lower short rod 12 are welded to the same side ends of the two lower long rods 11 to form a rectangular structure. The middle lower short rod 13 is evenly arranged longitudinally in the middle of the rectangular structure formed by the edge lower short rod 12 and the lower long rod 11, connecting the two lower long rods 11. The bottom short rod 14 is connected between the middle lower short rod 13 and the edge lower short rod 12, or between two adjacent middle lower short rods 13, with a spacing of 50cm, and is evenly arranged in parallel.

[0039] The column 2 is a double-channel steel interlocking structure. Six columns 2 are symmetrically arranged with the side centerline of the π-shaped pier A as the center. The horizontal distance from the edge of the π-shaped pier A is at least 30cm on each side. Two of the columns 2 are located at the corners of the lower frame 1 near the center of the π-shaped pier A. The positions of the other four columns 2 are determined according to the actual position of the pad stone C of the π-shaped pier A. The longitudinal distance from the pad stone C is at least 20cm on each side.

[0040] The upper frame 3 consists of upper long rods 31, upper short rods 32, connecting crossbars 33, and lifting lugs 34. The upper long rods 31 are double-channel steel with interlocking ends, and two upper long rods 31 are arranged symmetrically parallel to each other around the central axis of the side of the π-shaped pier A. The upper short rods 32 are also double-channel steel with interlocking ends, and two are arranged in total. The two ends of each upper short rod 32 are welded to the same side ends of the two upper long rods 31, forming a rectangular structure. The connecting crossbars 33 are made of I-beams and are arranged transversely along the bridge direction in a π-shaped pattern. With the central axis of pier A as the center, two symmetrically arranged supports are placed 20cm from the edge of the pier top near pier A; the lifting lugs 34 are composed of multiple sets of 10mm steel plates. The lifting lugs 34 are symmetrically arranged on the upper short rods 32 with the central axis of the side of pier A as the center, and two lifting lugs 34 are arranged on each upper short rod 32; the specific positions of the lifting lugs 34 are symmetrically arranged according to the calculated center of gravity of the overall structure, and the spacing ratio of the lifting lugs 34 on the upper short rods 32 is 1:5:4.

[0041] The reinforcing diagonal braces 4 are arranged between the upper frame 3 and the column 2, and between the lower frame 1 and the column 2. The reinforcing diagonal braces 4 are arranged symmetrically and are made of channel steel.

[0042] The guardrail 5 consists of straight guardrail bars 51 and diagonal guardrail bars 52, which are connected by welding. The height of the guardrail 5 is 1.2m. Both ends of the guardrail 5 are welded to the posts 2. A safety net 10 is laid behind the guardrail 5 to ensure construction safety. After installation, the top support 6 is used to support the side of the crossbeam B to ensure the stability of the construction.

[0043] The top support 6 consists of a large pad 61, a small pad 62, a bolt 63, and an adjustable threaded rod 64. The top support 6 is arranged on the column 2, with four of them symmetrically arranged around the central axis of the π-shaped pier A.

[0044] The base plate 8 is a 3 mm patterned steel plate. The base plate 8 is located at the bottom frame 1, the top of the ladder 7 at the edge of the pier, and the short bar 73 at the bottom of the ladder 7.

[0045] The stiffening plate 9 is a 10mm steel plate. The stiffening plate 9 needs to be cut. The stiffening plate 9 is arranged at the connection between the column 2 and the lower long rod 11, and between the column 2 and the upper short rod 32.

[0046] The length of the upper pole 21 must be greater than the width of the π-shaped pier A by 40cm to ensure sufficient space for construction operations.

[0047] After the lower long rod 11 is placed after the π-shaped pier A, the length of the cantilever protruding from the π-shaped pier A in the horizontal direction must be 1m.

[0048] The lower long pole 11, upper long pole 31, upper short pole 32, and column 2 are all double channel steel interlocking structures; the middle lower short pole 13 is made of I-beams; the edge lower short pole 12, reinforcing diagonal brace 4, and ladder upright 71 are all made of channel steel.

[0049] Assembly process:

[0050] During assembly, first weld the ends of the long rod 11 to the same side of the short rod 12 at the edge to form a rectangular structure. Then, weld the middle short rod 13 at equal intervals in the middle of the rectangular structure, followed by short rod 14. Connect the short rods at equal intervals to form the lower frame 1. Weld the ends of the upper short rod 32 to the same side of the upper long rod 31 to form a rectangular structure. Then, weld the horizontal rod 33 in the middle, symmetrically arranging two near the edge of the pier. Then, arrange the lifting lugs 34 on the upper short rod 32, with the specific positions symmetrically arranged according to the calculated center of gravity of the overall structure, to form the upper frame 3. Weld a base plate 8 onto the lower frame 1, and then weld six columns 2 at appropriate positions. The spacing between the two rows in the transverse direction represents the structural width of the ladder 7. Then, weld them to the upper frame 3, and reinforce the connection with stiffening plates 9. Finally, reinforce the connection between the columns 2 and the upper and lower frames 1 with reinforcing diagonal braces 4. The bottom horizontal bar 72 is connected to the lower frame 1, and then a bottom short bar 73 is welded into it. A base plate 8 is then placed, followed by the welding of uprights 71. The connections between uprights 71 and posts 2, between uprights 71 and each other, and between posts 2 are made using protective short bars 74. After that, a safety net 10 is laid. Ladder short bars 75 are arranged parallel and evenly between one side of the posts 2 and uprights 71, with a spacing of 300mm. The guardrail 5 short bars are formed by welding guardrail straight bars 51 and guardrail diagonal bars 52. Guardrail 5 is placed around the lower frame 1, on three sides of the upper frame 3, and at the top of the ladder 5 up to the edge of the pier.

[0051] Installation process:

[0052] During installation, a crane is used to lift the tensioning platform hanger at four points to raise it to a suitable height. Then, the distance between the tensioning platform hanger and the crossbeam B of the π-shaped pier A is adjusted. The tensioning platform hanger is then inserted from the side of the π-shaped pier A so that the upper frame 3 sits on the crossbeam of the π-shaped pier A. Attention should be paid to the position of the pad stone C to avoid pressing on it. After installation, the hanger needs to be fixed with the top support 6.

[0053] Demolition process:

[0054] During dismantling, first remove the top support 6, and then use a crane to lift the tensioning platform frame directly out.

[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A tensioning platform hanger suitable for π-shaped piers, characterized in that: The structure includes a lower frame, columns, an upper frame, reinforcing braces, guardrails, top supports, ladders, a base plate, and a safety net. The lower and upper frames, which are both rectangular and placed parallel to each other, are connected by six vertical columns. Reinforcing braces are arranged between the upper frame and the columns, and between the lower frame and the columns. Ladders connecting the lower and upper frames are located on the right side of the lower frame and the right side of the upper frame. Guardrails are located on the top of the lower frame and the top of the upper frame. A top support is located in the middle of each column to support the side of the crossbeam. A base plate is located on the top of the lower frame, at the top of the ladder where it is suspended from the edge of the pier, and at the bottom of the ladder. A safety net is installed at the bottom of the ladder.

2. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The lower frame consists of lower long bars, edge lower short bars, middle lower short bars, and bottom short bars. The lower long bars are double channel steel with interlocking ends, and are arranged below the ends of the crossbeams of the π-shaped pier, with two bars symmetrically arranged around the central axis of the side of the crossbeams of the π-shaped pier. The edge lower short bars are channel steel, and there are two edge lower short bars. The two ends of each edge lower short bar are welded to the same side ends of the two lower long bars to form a rectangular structure. The middle lower short bars are evenly arranged longitudinally in the middle of the rectangular structure formed by the edge lower short bars and the lower long bars, connecting the two lower long bars. The bottom short bars connect the middle lower short bars and the edge lower short bars, or between two adjacent middle lower short bars, with a spacing of 50m, and are evenly arranged in parallel.

3. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The columns are double-channel steel with interlocking. Six columns are symmetrically arranged with the side centerline of the π-shaped pier as the center. The horizontal distance from the edge of the π-shaped pier is at least 30m to the left and right. Two of the columns are located at the corners of the lower frame near the center of the π-shaped pier. The positions of the remaining four columns are determined according to the actual position of the π-shaped pier's pad stone. The longitudinal distance from the pad stone is at least 20m to the left and right.

4. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The upper frame consists of upper long poles, upper short poles, connecting crossbars, and lifting lugs. The upper long poles are double-channel steel with interlocking ends, and two upper long poles are arranged symmetrically parallel to each other with the side centerline of the π-shaped pier as the center. The upper short poles are also double-channel steel with interlocking ends, and two are arranged in total. The two ends of each upper short pole are welded to the ends of the two upper long poles on the same side, forming a rectangular structure. The connecting crossbars are made of I-beams, and two connecting crossbars are arranged symmetrically with the side centerline of the π-shaped pier as the center, 20m away from the edge of the pier top. The lifting lugs are composed of multiple sets of 10mm steel plates, and the lifting lugs are arranged symmetrically with the side centerline of the π-shaped pier at the upper short poles, with two lifting lugs on each upper short pole. The spacing ratio of the lifting lugs on the upper short poles is 1:5:

4.

5. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The reinforcing diagonal bracing is arranged between the upper frame and the column, and between the lower frame and the column. The reinforcing diagonal bracing is symmetrically arranged and is made of channel steel.

6. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The guardrail consists of straight bars and diagonal bars, with a height of 1.2m. Both ends of the guardrail are welded to the posts; a safety net is laid behind the guardrail.

7. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The top support consists of a large pad, a small pad, bolts, and an adjustable threaded rod. The top supports are arranged on the column, with four symmetrically arranged around the central axis of the π-shaped pier.

8. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The base plate is a 3mm patterned steel plate, which is placed on the lower frame as a whole, at the top of the ladder where it is suspended from the edge of the pier, and at the short bar at the bottom of the ladder.

9. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: Stiffening plates are placed at the connection points between the column and the lower long bar, and between the column and the upper short bar. The stiffening plates are made of 10mm steel plates.

10. The tensioning platform hanger for π-shaped piers according to claim 1, characterized in that: The length of the upper long pole must be greater than the width of the π-shaped pier by 40m; the lower long pole is placed behind the π-shaped pier, and the length of the cantilever protruding from the π-shaped pier in the horizontal direction must be 1m; the lower long pole, upper long pole, upper short pole, and column are all double channel steel interlocking structures; the middle lower short pole is made of I-beams; the edge lower short poles, reinforcing diagonal braces, and ladder uprights are made of channel steel.

Images