High-pile wharf superstructure construction road and mounting and dismounting method

Abstract

The invention relates to the technical field of construction shortcuts, and discloses a high-pile wharf superstructure construction shortcut and a mounting and dismounting method, the high-pile wharf superstructure construction shortcut comprises a plurality of main beams arranged between two adjacent pile caps, a bailey beam group, a plurality of distribution beams and a plurality of panels; an embedded steel plate is arranged at the top end of the pile cap, and the bottom of the main beam is connected with the surface of the embedded steel plate; and the bailey beam group is formed by connecting a plurality of bailey beams in parallel. According to the construction road for the upper structure of the long-piled wharf and the mounting and dismounting method, a stable and reliable passing platform is constructed through a main beam-bailey beam group-distribution beam-panel four-stage force transmission system, a stable and rigid continuous platform is constructed, concentrated loads of construction vehicles and equipment are effectively dispersed and transmitted to a lower pile cap structure, and the construction efficiency is improved. The technical problems that a traditional temporary shortcut is poor in structural integrity, limited in bearing capacity and prone to deformation and instability under heavy loads are solved, and the safety of construction passing operation is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of construction access road technology, specifically to a construction access road for the superstructure of a high-pile wharf and a method for its installation and dismantling. Background Technology

[0002] With the continuous development of port engineering construction, high-pile wharves are widely used in wharf projects under complex geological conditions such as deep-water soft foundations due to their good adaptability and structural stability. During the construction of the superstructure of high-pile wharves, the construction access roads are crucial for material transportation, equipment access, and the safety of workers. However, existing technologies for temporary construction access roads and their installation and dismantling methods during the construction phase of the superstructure of high-pile wharves still have many shortcomings, such as poor structural stability, low dismantling efficiency, significant interference with the main structure, and low reuse rate, which affect the overall construction efficiency and safety.

[0003] A search revealed patent CN109706883B, entitled "Construction Method of High-Gantry Frame for High-Pile Wharf." This patent proposes a construction method that involves erecting and installing supports on the approach bridge deck and hoisting prefabricated portal frame structures to avoid high-altitude formwork operations. However, this solution does not address a temporary construction access road system specifically for the superstructure construction phase. Its support system is primarily used for high-gantry frame installation, lacking versatility. Furthermore, the support erection relies on the already completed approach bridge structure, making it unsuitable for high-pile wharf areas without approach bridges or far from the shoreline. In addition, this method does not consider the need for rapid installation and dismantling of construction access roads, failing to meet the requirements for efficient turnover of temporary access routes during multi-stage, overlapping operations of the high-pile wharf superstructure.

[0004] A search revealed a patent, CN119195055B, entitled "A Method for Erecting Prefabricated Combined High-Pile Wharfs." This patent utilizes specialized integrated beam and slab erection equipment, achieving precise installation of prefabricated components through shore-side erection, track layout, and a lifting trolley, effectively reducing the impact of waves on the installation process. While this method has advantages in prefabricated component hoisting, its core focus is on prefabricated component transportation and installation equipment, failing to provide a temporary construction access road system for construction personnel and small machinery. Furthermore, the equipment is bulky, relies on a track system, and is difficult to flexibly adapt to the construction needs of high-pile wharf superstructures of different spans or non-standard sections. It also lacks the modular and detachable features of a access road, making it unsuitable for use as a general-purpose construction access road. However, a dedicated construction access road system that is structurally stable, easy to install, reusable, and easily disassembled is lacking during the superstructure construction phase. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a construction access road for the superstructure of a high-pile wharf and a method for its installation and dismantling, thus solving the problems mentioned in the background.

[0006] The present invention provides the following technical solution: a construction access road for the superstructure of a high-pile wharf, comprising multiple main beams, Bailey beam groups, multiple distribution beams and multiple panels arranged between two adjacent pile caps; The top of the pile cap is provided with a pre-embedded steel plate, and the bottom of the main beam is connected to the surface of the pre-embedded steel plate. The Bailey beam assembly is composed of multiple Bailey beams connected in parallel. The multiple Bailey beams are longitudinally erected between two rows of main beams, and adjacent Bailey beams are connected by Bailey connecting plates. Multiple distribution beams are horizontally mounted on the Bailey beam assembly, and multiple panels are fully laid on the distribution beams. Adjacent panels are welded and fixed together, and guardrails are provided at both ends of the distribution beams.

[0007] Preferably, the main beam is made of double-I-beams, and the bearing length of the main beam on the pile cap is greater than 600mm.

[0008] Preferably, the size of the embedded steel plate at the top of the pile cap is 400mm×300mm×12mm, the lower end of the embedded steel plate is welded with anchoring steel bars, and the surface of the embedded steel plate is welded to the surface of the main beam.

[0009] Preferably, the number of Bailey beams is five, and the Bailey connecting plate is fixedly connected to the Bailey beams by bolts. The Bailey connecting plate is made of channel steel.

[0010] Preferably, the distribution beam is made of I-beams, and the spacing between two adjacent distribution beams is 300mm.

[0011] Preferably, an L-shaped stop is provided between the Bailey beam and the main beam, and the height of the L-shaped stop is 150mm; The distribution beam and the Bailey beam are fixedly connected by a U-shaped buckle.

[0012] Preferably, the panel is a steel plate with a thickness of 10mm, and adjacent panels are connected by spaced welds with a spacing of 1m and a single weld length of 0.15m.

[0013] Preferably, the guardrail posts are made of channel steel, and the height of the guardrail posts is 1.2m. The distance between two adjacent guardrail posts is 2m. Multiple parallel horizontal bars are provided between two adjacent guardrail posts, and a flashing light is installed on the top of the posts.

[0014] A method for installing and dismantling a construction access road for the superstructure of a high-pile wharf includes the following steps: Step S1: Construction of steel plate pre-embedded in pile cap, pre-embedding steel plate before pouring concrete for pile cap; Step S2: Main beam installation. After the pile cap concrete reaches the design strength, the main beam is hoisted onto the embedded steel plate and welded in place. Step S3: Bailey beam assembly; Step S4: Bailey beam assembly installation. Hoist the assembled Bailey beams between the two rows of main beams and install and fix them in place. Install the Bailey connecting plates and L-shaped blocks in sequence. Step S5: Install the distribution beams. Hoist the distribution beams onto the Bailey beam assembly at the specified intervals and secure them with U-shaped clips. Step S6: Panel installation, hoist the steel plate onto the distribution beam and weld it in place; Step S7: Installation of guardrails and ancillary facilities; Step S8: Dismantle the access road. After construction is completed, dismantle it in the reverse order of installation.

[0015] Preferably, in step S8, the sidewalk is dismantled in units of single spans, and is carried out by retreating span by span from the far end to the starting point; The dismantling of the Bailey beam assembly includes: first removing the limiting device, then removing the Bailey connecting plate, and finally hoisting and unloading the individual Bailey beams; The dismantling of the main beam includes: first cutting the weld between the main beam and the embedded steel plate, and then lifting and unloading it.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention constructs a stable and reliable passage platform through a four-level force transmission system of main beam-Bailey beam group-distribution beam-panel, creating a stable and rigid continuous platform that effectively disperses and transfers the concentrated loads of construction vehicles and equipment to the lower pile cap structure. This solves the technical problems of poor overall structure, limited load-bearing capacity, and easy deformation and instability under heavy loads in traditional temporary access roads, significantly improving the safety of construction and passage operations. 2. This invention designs the construction access road as a modular, prefabricated system composed of standard main beams, Bailey beams, distribution beams, and panels, and provides a clear "bottom-up" installation and "reverse span-by-span" dismantling process. This enables the entire access road to be quickly assembled and orderly disassembled, greatly reducing dependence on and interference with the permanent structure of the wharf. It solves the technical problems of existing temporary support systems, such as cumbersome construction, difficult dismantling, low turnover efficiency, and difficulty in adapting to the flexible deployment requirements of high-pile wharves with different spans and isolated working areas. It is suitable for flexible deployment in isolated high-pile wharves, variable span sections, and non-standard areas. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the process of the present invention.

[0018] In the diagram: 1. Main beam; 2. Bailey beam; 3. Distribution beam; 4. Panel; 5. Embedded steel plate; 6. Bailey connecting plate; 7. Guardrail; 8. Pile cap; 9. Anchor reinforcement. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-3 A construction access road for the superstructure of a high-pile wharf includes multiple main beams 1, Bailey beam groups, multiple distribution beams 3 and multiple panels 4, which are set between two adjacent pile caps 8. The top of the pile cap 8 is provided with a pre-embedded steel plate 5, and the bottom of the main beam 1 is connected to the surface of the pre-embedded steel plate 5. The Bailey beam assembly is composed of multiple Bailey beams 2 connected in parallel. The multiple Bailey beams 2 are longitudinally erected between two rows of main beams 1, and adjacent Bailey beams 2 are connected by Bailey connecting plates 6. Multiple distribution beams 3 are horizontally erected on the Bailey beam assembly, and multiple panels 4 are fully laid on the distribution beams 3. Adjacent panels 4 are welded and fixed together, and guardrails 7 are installed at both ends of the distribution beams 3.

[0021] The main beam 1 is made of double-I-beams, and the bearing length of the main beam 1 on the pile cap 8 is greater than 600mm.

[0022] The top of the pile cap 8 has a pre-embedded steel plate 5 with dimensions of 400mm×300mm×12mm. An anchoring steel bar 9 is welded to the lower end of the pre-embedded steel plate 5. The surface of the pre-embedded steel plate 5 is welded to the surface of the main beam 1.

[0023] There are five Bailey beams 2. The Bailey connecting plate 6 is fixedly connected to the Bailey beams 2 by bolts. The Bailey connecting plate 6 is made of channel steel.

[0024] The distribution beam 3 is made of I-beams, and the spacing between two adjacent distribution beams 3 is 300mm.

[0025] An L-shaped stop is provided between Bailey beam 2 and main beam 1, and the height of the L-shaped stop is 150mm; A U-shaped buckle is used to fix the distribution beam 3 and the Bailey beam 2.

[0026] Panel 4 is made of steel plate and has a thickness of 10mm. Adjacent panels 4 are connected by intermittent welds with a weld spacing of 1m and a single weld length of 0.15m.

[0027] The posts of guardrail 7 are made of channel steel and are 1.2m high. The distance between two adjacent posts of guardrail 7 is 2m. There are multiple parallel horizontal bars between two adjacent posts of guardrail 7. A flashing light is installed on the top of the post.

[0028] A method for installing and dismantling a construction access road for the superstructure of a high-pile wharf, characterized by comprising the following steps: Step S1: Construction of steel plate 5 embedded in pile cap 8, steel plate 5 is embedded before the concrete is poured into pile cap 8; Step S2: Install the main beam 1. After the concrete of the pile cap 8 reaches the design strength, hoist the main beam 1 onto the embedded steel plate 5 and weld it in place. Step S3: Bailey beam assembly; Step S4: Bailey beam assembly installation. Hoist the assembled multiple Bailey beams 2 between the two rows of main beams 1 and install and fix them in place. Install the Bailey connecting plates 6 and L-shaped blocks in sequence. Step S5: Install the distribution beam 3. Hoist the distribution beam 3 onto the Bailey beam assembly at the specified intervals and secure it with U-shaped clips. Step S6: Panel 4 installation: Hoist the steel plate onto the distribution beam 3 and weld it in place; Step S7: Installation of guardrail 7 and ancillary facilities; Step S8: Dismantle the access road. After construction is completed, dismantle it in the reverse order of installation.

[0029] In step S8, the sidewalk is dismantled in units of single spans, proceeding from the far end to the starting point by moving backwards span by span; The dismantling of the Bailey beam assembly includes: first removing the U-shaped clips, then removing the Bailey connecting plate 6, and finally hoisting and unloading the single Bailey beam 2; The dismantling of the main beam 1 includes: first cutting the weld between the main beam 1 and the embedded steel plate 5, and then lifting and unloading it.

[0030] In a specific implementation. Please refer to Figure 1-2 A construction access road for the superstructure of a high-pile wharf, the structure of which, from bottom to top, includes a main beam (1), a Bailey beam (2) group, a distribution beam (3), a panel (4) and a guardrail (7).

[0031] The main beam (1) is constructed by splicing two standard hot-rolled I-beams side by side. It is preferred to use I-beams with larger cross-sectional specifications to provide sufficient bending stiffness, such as double-splitting 40a I-beams. The main beam (1) is erected laterally, and its two ends are supported on the top surfaces of two adjacent laterally arranged pile caps (8). Before the concrete is poured into the pile caps (8), the design position of the top surface has been set with embedded steel plates (5). The bottom flange of the main beam (1) and the embedded steel plates (5) are welded and fixed by a full-circumference continuous fillet weld. The weld height is greater than 8mm, which ensures reliable force transmission between the main beam (1) and the substructure. The actual bearing length of the main beam (1) on the pile caps (8) is determined by calculation and must meet the structural stress requirements. At the same time, in order to ensure stability, the actual bearing length of the main beam (1) is greater than 600mm. The length × width × thickness of the embedded steel plate (5) is 400mm × 300mm × 12mm, and the material is Q345B to improve the local bearing capacity. The bottom of the embedded steel plate (5) is welded with 6 HRB400 grade anchoring steel bars (9) with a diameter of 16mm and an anchoring length of 350mm. The anchoring steel bars (9) are reliably connected to the internal steel mesh when the pile cap (8) is poured to ensure that the embedded steel plate (5) is not pulled out. The Bailey beam (2) group is erected longitudinally, that is, along the passage direction of the access road, located between two rows of parallel main beams (1). The Bailey beam (2) group is composed of multiple Bailey beams (2), such as Bailey beams (2) of type 321. In this embodiment, five Bailey beams (2) are arranged in a single layer in parallel to provide sufficient lateral width, usually greater than 3.5m to meet two-way passage. Each Bailey beam (2) is composed of several standard Bailey pieces connected by pins and assembled on land. The two adjacent Bailey beams (2) are connected at the vertical support frame by Bailey connecting plates (6) 22 made of channel steel and high-strength bolts to form a Bailey beam (2) group that bears the load as a whole. The channel steel is made of existing materials, such as No. 7 channel steel. To prevent the Bailey beam (2) group from lateral slippage during use, an L-shaped stop is welded on the outer side of the upper flange of the main beam (1) at the end node position of the Bailey beam (2) as a limiting structure. The L-shaped stop is about 150mm high and is set at intervals along the length of the main beam (1). The distribution beam (3) is made of I-beams with small cross-sectional dimensions, preferably No. 20a I-beams. The distribution beam (3) is laid horizontally, that is, perpendicular to the passage direction of the sidewalk. On the top surface of the Bailey beam (2) group, the distribution spacing of the distribution beam (3) is set according to the thickness of the panel (4) and the load requirements to ensure that the panel (4) has sufficient support rigidity and prevent excessive local deformation. To prevent the distribution beam (3) from moving laterally on the upper chord of the Bailey beam (2), a U-shaped buckle is provided at the contact point between each distribution beam (3) and the upper chord of the Bailey beam (2). The U-shaped buckle locks the upper chord of the Bailey beam (2), and its two flanges are fastened to the web of the distribution beam (3) by bolts.

[0032] The panel (4) is cut from a 10mm thick Q235B steel plate and is fully laid on the upper surface of the distribution beam (3) to form a flat road surface. In order to adapt to temperature deformation and avoid the edge of the steel plate from curling due to heavy vehicle rolling, the adjacent steel plates are connected by intermittent welds instead of full welds. Specifically, the welds are arranged at intervals of 1m along the direction of the plate seam, and each weld segment is 150mm long. The edge of the panel (4) and the base of the guardrail (7) post are sealed with continuous fillet welds to prevent rainwater from seeping in and corroding the lower steel structure. The guardrail (7) is installed on both sides of the sidewalk. Its posts are made of channel steel, such as #10 channel steel, with a height of 1.2 meters. The bottom is welded and fixed to the top surface of the distribution beam (3) below, and the post spacing is meters. Multiple horizontal bars are installed between the posts. The horizontal bars can be made of scaffolding tubing and connected to the posts via right-angle couplers. All upper horizontal bars should be installed on the same horizontal line to ensure a neat and aesthetically pleasing alignment. A solar-powered flashing light is installed at the top of each post as a warning device for nighttime and foggy weather.

[0033] The installation and dismantling method of the above-mentioned construction access road specifically includes the following steps: Step S1: Construction of the embedded steel plate (5) of the pile cap (8). During the reinforcement binding process of the pile cap (8), the embedded steel plate (5) with the welded anchor steel bars (9) is precisely fixed at the design elevation and plane position by the positioning bracket to ensure that the top surface of the embedded steel plate (5) is horizontal, the elevation deviation is controlled within ±2mm, and the plane position deviation is not greater than 5mm. Then, the concrete of the pile cap (8) is poured and cured to the design strength.

[0034] Step S2: Installation of the main beam (1). After the concrete strength of the pile cap (8) reaches 100% of the design strength, use a crawler crane to lift the double-beam I-beam (1) to the installation position. The two ends of the main beam (1) are accurately placed on the corresponding embedded steel plates (5), and its center line and levelness are adjusted. After checking that the support length meets the requirement of being greater than 600mm, the welder will weld the bottom flange of the main beam (1) to the embedded steel plate (5) 7 with a full-circumference fillet weld. The welding process must meet the specifications and ensure the quality of the weld. Step S3: Bailey beam (2) assembly. Set up a Bailey panel assembly area in the land area behind the dock or in the completed platform area. Use pins to connect the standard Bailey panels into a single Bailey beam (2) of the designed length, and install the vertical and horizontal support frames. Check that the connecting pins are in place and not loose. Step S4: Bailey beam (2) assembly installation. Using a crawler crane, the assembled Bailey beam (2) is hoisted sequentially to the design position between the two rows of main beams (1). After the five single-layer parallel beams are in place, the adjacent Bailey beams (2) are immediately connected with Bailey connecting plates (6) and high-strength bolts to form an integral Bailey beam (2) assembly. After all Bailey beams (2) are installed and connected, L-shaped blocks are welded to the corresponding positions on the upper flange of the main beam (1) to tightly abut the ends of the Bailey beams (2) and complete the lateral limiting. Step S5: Install the distribution beam (3). Use a crawler crane to lift the single I-beam distribution beam (3) and lay it horizontally on the top surface of the Bailey beam (2) group at a spacing of 300mm. After each distribution beam (3) is in place, immediately install the U-shaped buckle and use bolts to fasten it to the upper chord of the Bailey beam (2) and the distribution beam (3) to prevent the distribution beam (3) from shifting. Step S6: Panel (4) installation. The prefabricated steel panel (4) is hoisted onto the distribution beam (3) and laid from one end to the other. The steel panel (4) is aligned with each other and then positioned and welded according to the specifications of 1m interval and 0.15m weld length. After all the panels (4) are laid and welded, a continuous and complete bridge deck is formed. Step S7: Installation of guardrail (7) and ancillary facilities. Mark the position of the posts at 2m intervals on both sides of the sidewalk. Weld the bottom of the guardrail (7) posts to the distribution beam (3) firmly. Then install the upper and lower crossbars and lock them with fasteners. Finally, install solar flashing lights on the top of the posts and connect or adjust the power supply. Step S8: Access Road Dismantling. After the superstructure construction is completed, the access road is dismantled in reverse order, following the principle of "install first, dismantle later" and "install last, dismantle first," with each span as a work unit, moving backward from the furthest point of construction towards the starting point.

[0035] First, remove the flashing lights and the horizontal bar of the guardrail (7), then cut off the weld at the bottom of the post and remove the guardrail (7); Next, use an oxy-fuel cutting tool to cut off the intermittent welds between the panels (4) and lift the panels (4) apart in sections; Next, loosen the U-shaped buckle bolts on all the distribution beams (3) and lift out the distribution beams (3) one by one.

[0036] Then, disassemble the Bailey beam (2) group: first cut or knock off the L-shaped block on the main beam (1), then remove the bolts of the Bailey connecting plate (6) connecting each Bailey beam (2), and use a crawler crane to lift the single Bailey beam (2) off in sequence.

[0037] Finally, the main beam (1) is dismantled: using an oxyacetylene flame, cut along the root of the weld between the main beam (1) and the embedded steel plate (5) to completely separate them. After confirming the separation, the main beam (1) is lifted off the pile cap (8) and transported to the storage site.

[0038] All dismantled components should be classified, numbered, cleaned, and maintained. After passing inspection, they can be stored in the warehouse for reuse in subsequent projects, thus achieving green construction.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction access road for the superstructure of a high-pile wharf, characterized in that, It includes multiple main beams (1), Bailey beam groups, multiple distribution beams (3), and multiple panels (4) set between two adjacent pile caps (8); The top of the pile cap (8) is provided with a pre-embedded steel plate (5), and the bottom of the main beam (1) is connected to the surface of the pre-embedded steel plate (5). The Bailey beam group is composed of multiple Bailey beams (2) connected in parallel. The multiple Bailey beams (2) are longitudinally erected between two rows of main beams (1), and adjacent Bailey beams (2) are connected by Bailey connecting plates (6). Multiple distribution beams (3) are horizontally mounted on the Bailey beam group, and multiple panels (4) are fully laid on the distribution beams (3). Adjacent panels (4) are welded and fixed together, and guardrails (7) are provided at both ends of the distribution beams (3).

2. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, The main beam (1) is made of double-I-beams, and the length of the main beam (1) resting on the pile cap (8) is greater than 600mm.

3. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, The top of the pile cap (8) has a pre-embedded steel plate (5) with dimensions of 400mm×300mm×12mm. An anchoring steel bar (9) is welded to the lower end of the pre-embedded steel plate (5). The surface of the pre-embedded steel plate (5) is welded to the surface of the main beam (1).

4. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, The number of Bailey beams (2) is five, and the Bailey connecting plate (6) is fixedly connected to the Bailey beams (2) by bolts. The Bailey connecting plate (6) is made of channel steel.

5. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, The distribution beam (3) is made of I-beams, and the distance between two adjacent distribution beams (3) is 300mm.

6. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, An L-shaped stop is provided between the Bailey beam (2) and the main beam (1), and the height of the L-shaped stop is 150mm; The distribution beam (3) and the Bailey beam (2) are fixedly connected by a U-shaped buckle.

7. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, The panel (4) is a steel plate with a thickness of 10mm. Adjacent panels (4) are connected by a spaced weld with a spacing of 1m and a single weld length of 0.15m.

8. The construction access road for the superstructure of a high-pile wharf according to claim 1, characterized in that, The posts of the guardrail (7) are made of channel steel, and the height of the posts of the guardrail (7) is 1.2m. The distance between two adjacent posts of the guardrail (7) is 2m. There are multiple parallel horizontal bars between two adjacent posts of the guardrail (7). A flashing light is installed on the top of the posts.

9. A method for installing and dismantling a construction access road for the superstructure of a high-pile wharf, characterized in that, Includes the following steps: Step S1: Construction of steel plate (5) embedded in pile cap (8) Before concrete pouring of pile cap (8); Step S2: Install the main beam (1). After the concrete of the pile cap (8) reaches the design strength, hoist the main beam (1) onto the embedded steel plate (5) and weld it in place. Step S3: Bailey beam assembly; Step S4: Bailey beam assembly installation. The assembled multiple Bailey beams (2) are hoisted between the two rows of main beams (1) and fixed in place. The Bailey connecting plates (6) and L-shaped blocks are installed in sequence. Step S5: Install the distribution beam (3). Hoist the distribution beam (3) onto the Bailey beam assembly at intervals and fix it with U-shaped clips. Step S6: Panel (4) installation: hoist the steel plate onto the distribution beam (3) and weld it in place; Step S7: Installation of guardrail (7) and ancillary facilities; Step S8: Dismantle the access road. After construction is completed, dismantle it in the reverse order of installation.

10. A method for installing and dismantling a construction access road for a high-pile wharf superstructure according to claim 9, characterized in that, In step S8, the sidewalk is dismantled in single spans, proceeding from the far end to the starting point by moving backwards span by span. The dismantling of the Bailey beam assembly includes: first removing the U-shaped clips, then removing the Bailey connecting plate (6), and finally hoisting and unloading the individual Bailey beams (2). The dismantling of the main beam (1) includes: first cutting the weld between the main beam (1) and the embedded steel plate (5), and then lifting and unloading it.

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