Overwater pedestrian trestle lifting device for immersed tube joint construction

Abstract

The invention discloses an overwater pedestrian trestle lifting device for immersed tube joint construction, and relates to the technical field of overwater construction. The device comprises a fixed support, a trestle, a movable roller and a guardrail, one end of the fixed support is connected with one end of the trestle through a pin shaft, the other end of the fixed support is fixedly connected with an immersed tube, the movable roller is connected with the other end of the trestle through a pin shaft, and the guardrail is connected with the trestle through a guardrail sleeve and a bolt; stairs convenient for constructors to go up and down the trestle are connected to two ends of the trestle, and the stairs comprise a first stair and a second stair. According to the overwater pedestrian trestle bridge lifting device for immersed tube joint construction, the deformation and damage of a pedestrian trestle bridge caused by tide fluctuation can be effectively reduced, and the comfort level and safety of personnel passing are improved; the device is simple in structural form, high in adaptability, high in safety and stability, short in construction period, easy and convenient to operate and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of water construction, and in particular to a water pedestrian trestle lifting device used for immersed tube section construction. Background Art

[0002] The prefabrication of the immersed tube tunnel segments cannot be completed in one go due to the water depth of the existing dry dock (ship dock), and needs to be prefabricated in stages. Only the bottom plate, side wall, part of the top plate and the middle partition wall can be cast in the dry dock (ship dock). After being winched out of the dock and floated to the storage area for the segment casting, the remaining top plate and middle partition wall concrete need to be cast at the dock. The immersed tube segment is 16m away from the dock, and a 1.25m wide pedestrian bridge on the water needs to be built to connect the segment with the dock to facilitate the construction workers to go up and down. The tide of the Pearl River in Guangzhou is an irregular semi-diurnal tide, with two high tides and two low tides every day, and the maximum tidal range is about 250cm. Because the segment floats and is stored in the Pearl River, a lifting device that changes with the tide needs to be installed on the pedestrian bridge. Summary of the invention

[0003] The purpose of the present invention is to provide a water pedestrian trestle lifting device for immersed tube section construction to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides an above-water pedestrian trestle lifting device for immersed tube section construction, comprising a fixed support, a trestle, a movable roller and a guardrail, one end of the fixed support is connected to one end of the trestle through a pin shaft, the other end of the fixed support is fixedly connected to the immersed tube, the movable roller is connected to the other end of the trestle through a pin shaft, and the guardrail is connected to the trestle through a guardrail sleeve and bolts.

[0005] Preferably, both ends of the pier are connected with stairs, and the stairs include a first staircase and a second staircase, one end of the first staircase is connected to the pier through a pin, and the other end of the first staircase is connected to the concrete surface of the shore, one end of the second staircase is connected to the pier through a pin, and the other end of the second staircase is connected to the immersed tube.

[0006] Preferably, the movable roller is placed on the concrete surface of the shore to achieve automatic adjustment of the position of the pier as the immersed tube floats up and down.

[0007] Preferably, the trestle comprises a plurality of bridge bodies extending along the longitudinal direction of the bridge, two adjacent bridge bodies are arranged at intervals, and two adjacent bridge bodies are connected by a shear plate.

[0008] Preferably, the bridge body includes a plurality of main beams spaced apart along the transverse direction of the bridge, each of the main beams extends along the longitudinal direction of the bridge, and each of the main beams is connected by a patterned plate.

[0009] Preferably, the horizontal height difference between the movable drum and the fixed support is less than 4.5m.

[0010] Preferably, the bridge body is sprayed with peacock blue anti-rust paint, and the fixed support, the guardrail, the first staircase and the second staircase are all sprayed with engineering yellow anti-rust paint.

[0011] The beneficial effects of the present invention are: ① During construction at the top of the pipe section, this device can be used to ensure 24-hour uninterrupted passage for personnel, greatly improving safety and construction efficiency. This device has the characteristics of strong bearing capacity, high rigidity and good stability, so that the trestle bridge is not affected by tidal changes during pipe section construction, and construction personnel can pass continuously and safely for 24 hours; ② The beam adopts modular and standardized structure, which can be assembled quickly; ③ The main beam adopts steel structure to meet the safety requirements of personnel passage and essentially eliminate the hidden danger of drowning; ④ The trestle is equipped with fixed ends and sliding ends, which can realize longitudinal and lateral movement to meet the height changes of the trestle caused by tidal changes; ⑤It can replace water transportation and achieve good economic benefits.

[0012] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of an embodiment of a water pedestrian trestle lifting device for immersed tube section construction of the present invention; Figure 2 A top view of an embodiment of a water pedestrian trestle lifting device for immersed tube section construction according to the present invention; Figure 3 This is a schematic diagram of the trestle status at high tide; Figure 4 This is a schematic diagram of the trestle state at low tide; Figure 5 for Figure 1 Middle AA section view; Figure 6 for Figure 1 Middle BB section view; Figure 7 for Figure 1 Middle CC section view; Figure 8 for Figure 1 Middle DD section view.

[0014] Among them, 1. guardrail; 2. second staircase; 3. fixed support; 4. pier; 5. shear plate; 6. movable roller; 7. first staircase; 8. immersed tube; 9. shore concrete surface; 10. bridge body; 101. main beam; 102. patterned plate; 11. guardrail sleeve; 12. bolts. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0018] Example like Figure 1-8 As shown, a water pedestrian trestle lifting device for immersed tube section construction includes a fixed support 3, a trestle 4, a movable roller 6 and a guardrail 1. One end of the fixed support 3 is connected to one end of the trestle 4 through a pin shaft, so that the trestle 4 can be turned up and down. The other end of the fixed support 3 is fixedly connected to the immersed tube 8 to play a limiting and positioning role. The movable roller 6 is connected to the other end of the trestle 4 through a pin shaft. The guardrail 1 is detachably connected to the trestle 4 through a guardrail sleeve 11 and a bolt 12.

[0019] Both ends of the pier 4 are connected with stairs for construction workers to go up and down the pier 4. The stairs include a first staircase 7 and a second staircase 2. One end of the first staircase 7 is connected to the pier 4 through a pin shaft, and the other end of the first staircase 7 is connected to the shore concrete surface 9. One end of the second staircase 2 is connected to the pier 4 through a pin shaft, and the other end of the second staircase 2 is connected to the immersed tube 8.

[0020] The movable roller 6 is placed on the concrete surface 9 of the shore, and is used to realize automatic adjustment of the position of the pier 4 as the immersed tube 8 floats up and down; the pier 4 includes multiple bridge bodies 10 extending along the longitudinal bridge direction, and two adjacent bridge bodies 10 are arranged at intervals, and the two adjacent bridge bodies 10 are connected by a shear plate 5, and the bridge body 10 is 8m long.

[0021] The bridge body 10 includes a plurality of main beams 101 spaced apart along the transverse direction of the bridge. The main beams 101 adopt standard sections, which improve the quality, precision, efficiency and deflection of the processing of the main beams 101 and facilitate processing, manufacturing and transportation. Each main beam 101 extends along the longitudinal direction of the bridge, and each main beam 101 is connected by a patterned plate 102; the horizontal height difference between the movable roller 6 and the fixed support 3 is less than 4.5m; the bridge body 10 is sprayed with peacock blue anti-rust paint, and the fixed support 3, the guardrail 1, the first staircase 7 and the second staircase 2 are sprayed with engineering yellow anti-rust paint.

[0022] This device is processed and manufactured in the factory, and then the processed parts are transported to the site for assembly. The total length of the device is 24m, the width is 1.25m, and the height is 1.7m. The main beam 101 adopts the standard segment of 8m, which improves the quality, accuracy, efficiency and deflection of the main beam 101 processing, and is convenient for processing and transportation. First, the bridge body 10 is connected with the shear plate 5, and then the guardrail 1, the first staircase 7, the second staircase 2, the movable roller 6 and the fixed support 3 are installed. After the installation is completed, the device is hoisted to the specified position by a lifting vehicle. One end of the fixed support 3 is connected to the pre-buried steel bar on the top of the immersed tube 8 pipe section, which plays a role in limiting and positioning. The trestle 4 and the fixed support 3 are connected by a pin shaft, and can be turned up and down according to the ebb and flow of the tide. One end of the movable roller 6 is placed on the concrete surface 9 of the shore, and can automatically adjust its position with the ups and downs of the immersed tube 8, thereby preventing damage to the trestle 4.

[0023] Therefore, the present invention adopts a water pedestrian trestle lifting device with the above-mentioned structure for the construction of immersed tube sections, which can effectively reduce the deformation and damage of the pedestrian trestle caused by the fluctuations of the tides, improve the comfort and safety of people passing through, and the device has a simple structure, strong adaptability, high safety and stability, short construction period, easy operation and low cost.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A water pedestrian trestle lifting device for immersed tube section construction, characterized in that: It includes a fixed support, a pier, a movable roller and a guardrail, one end of the fixed support is connected to one end of the pier through a pin shaft, the other end of the fixed support is fixedly connected to the immersed tube, the movable roller is connected to the other end of the pier through a pin shaft, and the guardrail is connected to the pier through a guardrail sleeve and bolts.

2. The water pedestrian trestle lifting device for immersed tube section construction according to claim 1 is characterized by: Both ends of the pier are connected with stairs, and the stairs include a first staircase and a second staircase. One end of the first staircase is connected to the pier through a pin shaft, and the other end of the first staircase is connected to the concrete surface of the shore. One end of the second staircase is connected to the pier through a pin shaft, and the other end of the second staircase is connected to the immersed tube.

3. The water pedestrian trestle lifting device for immersed tube section construction according to claim 2 is characterized by: The movable roller is placed on the concrete surface of the shore and is used to realize automatic adjustment of the position of the trestle as the immersed tube floats up and down.

4. The water pedestrian trestle lifting device for immersed tube section construction according to claim 3 is characterized by: The trestle comprises a plurality of bridge bodies extending along the longitudinal direction of the bridge, two adjacent bridge bodies are arranged at intervals, and two adjacent bridge bodies are connected by a shear plate.

5. The water pedestrian trestle lifting device for immersed tube section construction according to claim 4 is characterized by: The bridge body comprises a plurality of main beams spaced apart along the transverse direction of the bridge, each of the main beams extends along the longitudinal direction of the bridge, and each of the main beams is connected by a patterned plate.

6. The water pedestrian trestle lifting device for immersed tube section construction according to claim 5 is characterized by: The horizontal height difference between the movable drum and the fixed support is less than 4.5m.

7. The water pedestrian trestle lifting device for immersed tube section construction according to claim 6 is characterized by: The bridge body is sprayed with peacock blue anti-rust paint, and the fixed support, the guardrail, the first staircase and the second staircase are all sprayed with engineering yellow anti-rust paint.

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