Modular catwalk and method of use

Abstract

The application provides an assembled operation walkway and a use method thereof. A plurality of steel frames are used to form an operation platform in a mouth-shaped structure. A plurality of horizontal flat beam are arranged on the upper middle part of the operation platform. The two ends of the flat beam are connected with the operation platform through suspension beams to form an operation walkway structure. The operation platform is arranged on the top of the supporting pier through the flat beam. The application overcomes the shortcomings and defects of the traditional construction platform, such as heavy, large space occupation, inconvenience in carrying, difficulty in installation and disassembly, and influence on construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of walkway construction, and in particular to a prefabricated operating walkway and its usage method. Background Technology

[0002] With the continuous development of construction technology, the requirements for safe and civilized construction are becoming increasingly stringent, and the engineering field is paying more and more attention to the standardization and modular management of temporary facilities. To ensure construction safety during high-altitude operations on the pier top, such as concrete pouring for the bearing pad, installation of supports, and grouting of supports, it is necessary to set up operating walkways on the pier top. The operating walkways must not only meet the space requirements for construction operations on the pier top, but also serve as high-altitude edge protection.

[0003] Traditional pier-top operating walkways are divided into corbel bracket type and ground-supported scaffold type. Corbel bracket type operating walkways require a large number of embedded parts on the pier body or cap beam, which is not only difficult to install and dismantle, but also requires repair of the holes of the embedded parts on the pier body or cap beam after the operating platform is removed, which has a certain impact on the main structure and its appearance. Ground-supported scaffold type operating walkways have limited use conditions, have high requirements for the foundation, are time-consuming to install and dismantle, and have a low safety factor.

[0004] If a device and method could be adopted that both satisfies the operational space requirements for pier top construction and saves construction costs, successfully achieving prefabricated construction and effectively ensuring construction safety, this invention is based on the above-mentioned ideas. Summary of the Invention

[0005] The main objective of this invention is to provide a prefabricated operating walkway and its usage method, solving the problems of traditional pier-top operating walkways, which are either corbel-braced or ground-supported scaffolding. Corbel-braced operating walkways require a large number of embedded parts on the pier body or cap beam, which not only makes installation and dismantling difficult, but also requires repair of the holes in the embedded parts on the pier body or cap beam after the operating platform is removed.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a prefabricated operating walkway, an operating platform with a U-shaped structure composed of multiple steel frames, multiple horizontally arranged spreader beams provided above the middle of the operating platform, and the two ends of the spreader beams connected to the operating platform through suspension beams to form an operating walkway structure. The operating platform is set at the top of the support pier through the spreader beams.

[0007] In the preferred embodiment, the two ends of the suspension beam are connected to the spreader beam and the operating platform by multiple bolts or welds, respectively. The spreader beam is also provided with diagonal braces on both sides, and the two ends of the diagonal braces are connected to the spreader beam and the operating platform by multiple bolts or welds.

[0008] In the preferred embodiment, the operating platform is also equipped with protective railings around its outer edge.

[0009] In the preferred embodiment, one end of the operating platform is also equipped with an extended support plate, on which a tower crane is mounted.

[0010] In the preferred embodiment, one end of the bearing plate is connected to the operating platform, and the other end is connected to the suspension beam and / or diagonal bracing via multiple guy wires.

[0011] In the preferred embodiment, the tower crane support frame is provided with mounting feet at the lower end, which are slidably connected to the bearing plate. The tower crane support frame is provided with a lifting arm, one end of which is provided with a counterweight structure, and the other end is provided with lifting equipment.

[0012] In the preferred embodiment, a counterweight is also provided on the lower surface of the other end of the operating platform.

[0013] In the preferred embodiment, a lifting beam is also provided between the two spreader beams, and a winch is provided on the lifting beam. Multiple lifting ropes of the winch are connected to the two ends of the operating platform from the guide wheels on both sides of the support pier.

[0014] In the preferred embodiment, a portal frame assembly rack is also provided, and the steel frame is set on the assembly rack to assemble the entire operating platform.

[0015] The method includes:

[0016] S1. Install at least two spreader beams on the top of the support pier, install a lifting beam between the spreader beams, and then install suspension beams at both ends of the spreader beams;

[0017] S2. Assemble a portal frame according to the terrain. Multiple assembly frames are connected by connecting beams to stabilize the structure. Assemble a steel frame on the assembly frame. The steel frames are welded or threaded together to form an operating platform. The middle of the operating platform is hollow and has the same shape as the support pier.

[0018] S3. Install a bearing plate on the side of the operating platform. The bottom of the bearing plate is connected to the steel frame by multiple I-beams. Two-thirds of the I-beams are inserted into the bottom of the operating platform, and the remaining part of the I-beams protrudes from the surface. The bearing plate is installed on the surface of the I-beams, and the steel rails are installed on the bearing plate.

[0019] S4. Install mounting feet on the rails, install tower crane support frames on the mounting feet, install crane booms on the tower crane support frames, and install fixing nuts on the mounting feet. The fixing nuts pass through the mounting feet and are threadedly connected to the bearing plate to stabilize the position of the mounting feet.

[0020] S5. Control the rotation of the lifting arm so that the lifting arm is perpendicular to the support pier and will not interfere with the support pier when the entire operating platform is raised.

[0021] S6. The winch at the top of the lifting beam has at least four lifting ropes that go around the guide wheels at both ends of the support pier and are connected to the four corners of the operating platform. The winch lifts the entire operating platform to the top of the support pier, with the surface of the operating platform close to the lower end of the suspension beam.

[0022] S7. Connect the operating platform to the lower end of the suspension beam with multiple bolts. After connection, install the diagonal brace. The two ends of the diagonal brace are assembled and connected to the suspension beam and the operating platform with multiple bolts.

[0023] S8. One end of multiple diagonal tie wires is connected to the suspension beam and / or diagonal brace, and the other end of multiple diagonal tie wires is connected to the I-beam on the lower surface of the bearing plate.

[0024] S9. Disassemble the entire winch and use the boom of the tower crane to lift the winch away. Install a counterweight on the other end of the operating platform, or install a power generation device above the counterweight to provide power to the tower crane.

[0025] S10. When dismantling the entire operating platform, the bridge deck construction at the top of the support pier is completed. Winches are installed on both sides of the support pier. The winches are installed on both sides of the support pier through expansion nuts. The winch ropes are connected to the operating platform. The suspension beams and diagonal braces on the operating platform are removed. The diagonal braces, spreader beams and suspension beams are placed on the operating platform. The operating platform is lowered onto the assembly frame using the winch. Then, the tower crane on the operating platform is used to dismantle the winch and lower it to a safe position. Finally, the tower crane and operating platform are dismantled to complete the dismantling of the entire structure.

[0026] This invention provides a prefabricated operating walkway and its usage method. This invention solves the problems of poor anti-overturning performance, complex installation components, and numerous construction hazards during the installation process of traditional construction platforms. This invention overcomes the shortcomings and deficiencies of traditional construction platforms, such as their bulky size, large space occupation, inconvenience in transportation, difficulty in installation and dismantling, and impact on construction efficiency. This invention is simple to manufacture, convenient to install and dismantle, requires no additional embedded parts, has minimal impact on the main structure, saves construction costs, and ensures construction safety. This invention and its working method can be well applied to pier top construction, with few limitations and strong applicability. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a front view structural diagram of the operating corridor of the present invention;

[0029] Figure 2 This is a left-side view of the operating walkway structure of the present invention;

[0030] Figure 3 This is a structural diagram of the tower crane installation in the operating walkway of the present invention;

[0031] Figure 4 This is a diagram of the splicing structure of the operating walkway of the present invention;

[0032] Figure 5This is a diagram showing the installation structure of the spreader beam and suspension beam of this invention;

[0033] Figure 6 This is a top view of the operating platform of the present invention;

[0034] Figure 7 This is a diagram of the diagonal brace installation structure of the present invention.

[0035] In the diagram: 1. Spreader beam; 2. Suspension beam; 3. Diagonal brace; 4. Operating platform; 401. Steel frame; 5. Guardrail; 6. Load-bearing plate; 7. Installation foot; 8. Tie wire; 9. Tower crane support frame; 901. Lifting boom; 10. Counterweight; 11. Assembly frame; 12. Winch; 13. Lifting rope; 14. Guide wheel; 15. Lifting beam. Detailed Implementation

[0036] Example 1

[0037] like Figures 1-7 As shown, a prefabricated operating walkway comprises an operating platform 4 with a U-shaped structure composed of multiple steel frames 401. Multiple horizontally arranged spreader beams 1 are located above the center of the operating platform 4. The two ends of the spreader beams 1 are connected to the operating platform 4 via suspension beams 2, forming the operating walkway structure. The operating platform 4 is positioned at the top of the supporting pier via the spreader beams 1. The spreader beams 1, installed on the pier top, are fabricated from high-strength steel sections and other components. The spreader beams 1 are the main load-bearing structure of the entire structure, forming a unified whole with the operating platform 4 via suspension beams 2 and diagonal braces 3. The length of the spreader beams 1 depends on the longitudinal length of the pier top and the space required for the operating platform 4. The main structure of the spreader beams 1 is welded from two high-strength steel sections of the same type, reinforced by welding steel plates at areas of high stress. The spreader beams 1 possess high rigidity, capable of bearing the self-weight of the entire system and the additional loads during pier top operations.

[0038] In the preferred embodiment, the two ends of the suspension beam 2 are connected to the spreader beam 1 and the operating platform 4 respectively by multiple bolts or welds. The spreader beam 1 also has diagonal braces 3 on both sides, with their ends connected to the spreader beam 1 and the operating platform 4 by multiple bolts or welds. The suspension beam 2 is connected below the spreader beam 1 and serves as the hub connecting the spreader beam 1 and the operating platform 4. Four suspension beams are installed under each spreader beam 1. The suspension beam 2 is welded from two identical channel steels. The length of the suspension beam 2 can be adjusted according to the required operating space on the pier top. The top of the suspension beam 2 is welded to the spreader beam 1 or connected by bolts, and the bottom of the suspension beam 2 is welded to the frame of the operating platform 4 and connected by bolts. The suspension beam 2 mainly bears tensile stress in the entire system. The suspension beam 2 has high rigidity and can withstand the self-weight of the operating platform 4 and the additional load during operation on the pier top.

[0039] The diagonal brace 3 is connected to the spreader beam 1 and the operating platform 4. The diagonal brace 3 helps reduce the amount of work required for the spreader beam 1 and the suspension beam 2, enhancing the stability and load-bearing capacity of the entire structural system. The diagonal brace 3 extends the transverse length of the operating walkway, making the overall structural design more rational and providing sufficient operating space to meet construction requirements. The diagonal brace 3 is welded from two identical channel steels. The top of the diagonal brace 3 is connected to both the spreader beam 1 and the suspension beam 2, while the bottom is connected to the operating platform 4. The rigid connection between the diagonal brace 3, the spreader beam 1, and the suspension beam 2 enhances overall stability, and welded steel plates are used to increase structural strength at areas of high stress.

[0040] The operating platform 4 consists of a main load-bearing frame and patterned steel plates. The main load-bearing frame is welded from high-strength channel steel and is rigidly connected to the suspension beam 2 and diagonal braces 3 after being welded as a whole. A layer of patterned steel plates is welded to the top surface of the main load-bearing frame of the operating platform 4. The whole structure consisting of the main load-bearing frame and the patterned steel plates directly bears the load during the construction of the pier top, and the load is transferred to the spreader beam 1 through the suspension beam 2 and diagonal braces 3.

[0041] In the preferred embodiment, the operating platform 4 is also equipped with a protective railing 5 around its outer edge. The protective railing 5 is composed of a steel mesh frame and wire mesh panels. The steel mesh frame is welded longitudinally to the operating platform 4 at certain intervals. Two transverse sections of the steel mesh frame, together with the wire mesh panels, serve a protective function.

[0042] In the preferred embodiment, one end of the operating platform 4 is also provided with an extended bearing plate 6, on which a tower crane is mounted. The bearing plate 6 is installed on the side of the operating platform 4, and the bottom of the bearing plate 6 is connected to the steel frame 401 by multiple I-beams. Two-thirds of the I-beams are inserted into the bottom of the operating platform 4, and the remaining part of the I-beams extends out of the surface. The bearing plate 6 is installed on the surface of the I-beams, and steel rails are installed on the bearing plate 6.

[0043] In the preferred embodiment, one end of the bearing plate 6 is connected to the operating platform 4, and the other end is connected to the suspension beam 2 and / or the diagonal brace 3 via multiple inclined guy wires 8. This increases the stability of the end of the bearing plate 6.

[0044] In the preferred embodiment, the tower crane support frame 9 of the tower crane is provided with mounting feet 7 at the lower end, the mounting feet 7 are slidably connected to the bearing plate 6, the tower crane support frame 9 is provided with a lifting arm 901, one end of the lifting arm 901 is provided with a counterweight structure, and the other end is provided with a lifting device.

[0045] In the preferred embodiment, a counterweight 10 is also provided on the lower surface of the other end of the operating platform 4. The counterweight 10 plays a good balancing role.

[0046] In the preferred embodiment, a lifting beam 15 is also provided between the two spreader beams 1, and a winch 12 is installed on the lifting beam 15. Multiple lifting ropes 13 of the winch 12 are connected to both ends of the operating platform 4 from the guide wheels 14 on both sides of the support pier. The winch 12 is used for installing and dismantling the operating platform 4.

[0047] In the preferred embodiment, a portal frame assembly frame 11 is also provided, on which a steel frame 401 is mounted and assembled to form the entire operating platform 4. The assembly frame 11 is used to assemble the operating platform 4.

[0048] Example 2

[0049] Further explanation in conjunction with Example 1, such as Figure 1-7 As shown in the structure, S1, at least two spreader beams 1 are installed on the top of the support pier, a lifting beam 15 is installed between the spreader beams 1, and a suspension beam 2 is installed at both ends of the spreader beams 1.

[0050] S2. Assemble the assembly frame 11 with a gate-shaped structure according to the terrain. Multiple assembly frames 11 are connected by connecting beams to stabilize the structure. Assemble steel frames 401 on the assembly frame 11. The steel frames 401 are welded or threaded together to form an operating platform 4. The operating platform 4 has a hollow center and the same shape as the support pier.

[0051] S3. Install a bearing plate 6 on the side of the operating platform 4. The bottom of the bearing plate 6 is connected to the steel frame 401 by multiple I-beams. Two-thirds of the I-beams are inserted into the bottom of the operating platform 4, and the remaining part of the I-beams extends out of the surface. The bearing plate 6 is installed on the surface of the I-beams, and steel rails are installed on the bearing plate 6.

[0052] S4. Install mounting feet 7 on the rail, install tower crane support frame 9 on mounting feet 7, install crane boom 901 on tower crane support frame 9, and install fixing nuts on mounting feet 7. The fixing nuts pass through mounting feet 7 and are threaded to the bearing plate 6 to stabilize the position of mounting feet 7.

[0053] S5. Control the rotation of the lifting boom 901 so that the lifting boom 901 is perpendicular to the support pier and the lifting boom 901 will not interfere with the support pier when the entire operating platform 4 is raised.

[0054] S6. The winch 12 at the top of the lifting beam 15 has at least four lifting ropes 13 that go around the guide wheels 14 at both ends of the support pier and are connected to the four corners of the operating platform 4. The winch 12 lifts the entire operating platform 4 to the top of the support pier, and the surface of the operating platform 4 is close to the lower end of the suspension beam 2.

[0055] S7. Connect the operating platform 4 to the lower end of the suspension beam 2 with multiple bolts. After connection, install the diagonal brace 3. The two ends of the diagonal brace 3 are assembled and connected to the suspension beam 2 and the operating platform 4 with multiple bolts.

[0056] S8. One end of multiple inclined wires 8 is connected to the suspension beam 2 and / or the diagonal brace 3, and the other end of multiple inclined wires 8 is connected to the I-beam on the lower surface of the bearing plate 6.

[0057] S9. Disassemble the entire winch 12 and use the boom 901 of the tower crane to lift the winch 12 away. Install the counterweight 10 at the other end of the operating platform 4, or install a power generation device above the counterweight 10. The power generation device provides power to the tower crane.

[0058] S10. When dismantling the entire operating platform 4, the bridge deck construction at the top of the support pier is completed. Winches are installed on both sides of the support pier. The winches are installed on both sides of the support pier through expansion nuts. The winch ropes are used to connect to the operating platform 4. The suspension beam 2 and diagonal brace 3 on the operating platform 4 are removed. The diagonal brace 3, the spreader beam 1 and the suspension beam 2 are placed on the operating platform 4. The operating platform 4 is lowered onto the assembly frame 11 using the winch. The tower crane on the operating platform 4 is then used to dismantle the winch and lower it to a safe position. The tower crane and the operating platform 4 are then dismantled to complete the dismantling of the entire structure.

[0059] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A method of using a prefabricated operating walkway, characterized in that: Multiple steel frames (401) form a square-shaped operating platform (4). Multiple horizontally arranged flat beams (1) are provided above the middle of the operating platform (4). The two ends of the flat beams (1) are connected to the operating platform (4) through suspension beams (2) to form an operating walkway structure. The operating platform (4) is set at the top of the support pier through the flat beams (1). The two ends of the suspension beam (2) are connected to the spreader beam (1) and the operating platform (4) respectively by multiple bolts or welding. The spreader beam (1) is also provided with diagonal braces (3) on both sides. The two ends of the diagonal braces (3) are connected to the spreader beam (1) and the operating platform (4) respectively by multiple bolts or welding. A lifting beam (15) is also provided between the two spreader beams (1), and a winch (12) is provided on the lifting beam (15). Multiple lifting ropes (13) of the winch (12) are connected from the guide wheels (14) on both sides of the support pier to the two ends of the operating platform (4). It also has a portal frame assembly rack (11), and a steel frame (401) is set on the assembly rack (11) to assemble the entire operating platform (4). The method includes: S1. Install at least two spreader beams (1) on the top of the support pier, install a lifting beam (15) between the spreader beams (1), and then install suspension beams (2) at both ends of the spreader beams (1). S2. Assemble the assembly frame (11) according to the terrain. Multiple assembly frames (11) are connected by connecting beams to stabilize the structure. Assemble the steel frame (401) on the assembly frame (11). The steel frames (401) are welded or threaded together to form the operating platform (4). The operating platform (4) has a hollow center and the same shape as the support pier. S3. Install a bearing plate (6) on the side of the operating platform (4). The bottom of the bearing plate (6) is connected to the steel frame (401) by multiple I-beams. Two-thirds of the I-beams are inserted into the bottom of the operating platform (4), and the remaining part of the I-beams extends out of the surface. The bearing plate (6) is installed on the surface of the I-beams, and the steel rails are installed on the bearing plate (6). S4. Install foot (7) on the rail, install tower crane support frame (9) on foot (7), install crane boom (901) on tower crane support frame (9), and install fixing nut on foot (7). The fixing nut passes through foot (7) and is threaded to load plate (6) to stabilize the position of foot (7). S5. Control the rotation of the lifting arm (901). The lifting arm (901) is perpendicular to the support pier. The lifting arm (901) will not interfere with the support pier when the entire operating platform (4) is raised. S6. The winch (12) at the top of the lifting beam (15) has at least four lifting ropes (13) that go around the guide wheels (14) at both ends of the support pier and connect to the four corners of the operating platform (4). The winch (12) lifts the entire operating platform (4) to the top of the support pier, and the surface of the operating platform (4) is close to the lower end of the suspension beam (2). S7. Connect the operating platform (4) to the lower end of the suspension beam (2) with multiple bolts. After connection, install the diagonal brace (3). The two ends of the diagonal brace (3) are assembled and connected to the suspension beam (2) and the operating platform (4) respectively with multiple bolts. S8. One end of multiple tie wires (8) is connected to the suspension beam (2) and / or the diagonal brace (3), and the other end of multiple tie wires (8) is connected to the I-beam on the lower surface of the bearing plate (6). S9. Disassemble the entire winch (12), use the boom (901) of the tower crane to lift the winch (12) away, install a counterweight (10) at the other end of the operating platform (4), or install a power generation device above the counterweight (10), and the power generation device provides power to the tower crane. S10. When dismantling the entire operating platform (4), the bridge deck construction at the top of the support pier is completed. Winches are installed on both sides of the support pier. The winches are installed on both sides of the support pier through expansion nuts. The winch rope is used to connect with the operating platform (4). The suspension beam (2) and diagonal brace (3) on the operating platform (4) are removed. The diagonal brace (3), the spread beam (1) and the suspension beam (2) are placed on the operating platform (4). The operating platform (4) is lowered to the assembly frame (11) using the winch. The winch is then dismantled using the tower crane on the operating platform (4). The winch is lowered to a safe position. The tower crane and the operating platform (4) are then dismantled to complete the dismantling of the entire structure.

2. The method of using the prefabricated operating walkway according to claim 1, characterized in that: The operating platform (4) is also equipped with a protective railing (5) on its outer ring.

3. The method of using the prefabricated operating walkway according to claim 1, characterized in that: The operating platform (4) is also provided with an extended bearing plate (6) at one end, and a tower crane is provided on the bearing plate (6).

4. The method of using the prefabricated operating walkway according to claim 3, characterized in that: One end of the bearing plate (6) is connected to the operating platform (4), and the other end is connected to the suspension beam (2) and / or the diagonal brace (3) through multiple diagonal lines (8).

5. The method of using the prefabricated operating walkway according to claim 3, characterized in that: The tower crane support frame (9) of the tower crane is provided with mounting feet (7) at the lower end. The mounting feet (7) are slidably connected to the bearing plate (6). The tower crane support frame (9) is provided with a lifting arm (901). One end of the lifting arm (901) is provided with a counterweight structure, and the other end is provided with a lifting device.

6. The method of using the prefabricated operating walkway according to claim 3, characterized in that: The lower surface of the other end of the operating platform (4) is also provided with a counterweight (10).

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