Temporary steel trestle steel pipe pile inserting and driving guide frame for water spanning tower construction and construction method

Abstract

The invention discloses a temporary steel trestle steel pipe pile inserting and driving guide frame for underwater spanning tower construction and a construction method, and relates to the technical field of steel trestle construction. Most existing guide frames are bailey beam modified frames, have the problems that steel pipe piles need to be lengthened for multiple times, a distribution beam construction platform cannot be provided and the like due to the fact that the existing guide frames are low in rigidity and located on the upper portions of bailey beams, and influence construction quality, efficiency and safety. The guide frame comprises an upper cross beam, vertical rods, a lower cross beam and a fence, and the upper cross beam and the lower cross beam are connected through the vertical rods to form a sunken operation platform; the lower cross beam exceeds the upper cross beam in length, a guide hole is formed in the extending part of the lower cross beam, and the guide frame is used for completing operations such as steel pipe pile positioning, inserting and driving, lengthening, pile top opening and distribution beam installation. Through the design of the sinking type platform, the length of a single-time hoisting pile is increased, the lengthening frequency is reduced, the sinking type platform does not need to additionally erect a platform, multi-procedure continuous operation is achieved, the construction efficiency, quality and safety are remarkably improved, and the construction cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of steel trestle construction technology, and in particular to a steel pipe pile driving guide frame and construction method for a temporary steel trestle for underwater crossing tower construction. Background Technology

[0002] In the construction of the 500 kV power line crossing tower in the river, the erection of the temporary steel trestle bridge is a crucial step, and the steel pipe pile driving guide frame plays a key role in ensuring the smooth progress of construction. The guide frame guides the steel pipe piles to be accurately inserted into the predetermined position, ensuring their verticality and planar positioning accuracy, which is the foundation for ensuring the stability and load-bearing capacity of the steel trestle bridge.

[0003] Currently, in related projects, existing guide frames mostly utilize modified Bailey beams to achieve the guiding function. This type of guide frame has many drawbacks. First, its rigidity is low, and it is prone to deformation when subjected to the impact force and various external forces during the driving of steel pipe piles, making it difficult to guarantee the positioning accuracy of the steel pipe piles, thereby affecting the stability and safety of the entire steel trestle bridge structure.

[0004] Secondly, the existing guide frames are generally located at the top of the Bailey bridge. In this project, due to the influence of the main design, the steel pipe piles of the substructure of the steel trestle bridge are quite long. If the existing guide frames are used for construction, the steel pipe piles will need to be spliced ​​multiple times. Multiple splicing not only increases the complexity of the construction process and construction time, but also greatly increases the possibility of problems with the verticality and connection strength of the steel pipe pile segments. For example, if the welding quality is poor during segment connection, loosening and cracking may occur at the joints under load and environmental factors during subsequent use, thus threatening the safe use of the steel trestle bridge.

[0005] Furthermore, the existing guide frame cannot provide a working platform for the installation of the distribution beam. The installation of the distribution beam is a crucial step in steel trestle bridge construction. The lack of a dedicated working platform restricts the operating space for workers, leading to low construction efficiency and increased safety risks. For example, without a stable working platform, workers are prone to falls when installing distribution beams at heights.

[0006] In summary, existing guide frames utilizing modified Bailey beams suffer from drawbacks such as low stiffness, unsuitable height and positioning, increased problems with steel pipe pile extension, and the inability to provide a platform for distributing beam construction, severely impacting construction efficiency, quality, and safety. Therefore, a new guide frame is urgently needed to address these issues and meet the requirements for driving steel pipe piles for temporary steel trestle bridges during the construction of underwater crossing towers in 500 kV power line projects. Summary of the Invention

[0007] The technical problem to be solved and the technical task proposed by this invention is to improve and refine existing technical solutions, and to provide a guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction, in order to improve construction efficiency and safety and reduce construction costs. To this end, this invention adopts the following technical solution.

[0008] A guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction is characterized by: the guide frame having a symmetrical structure, including an upper crossbeam, vertical rods, a lower crossbeam, and a railing; the upper crossbeam is connected to the lower crossbeam via vertical rods set on its left and right sides at its bottom; the left and right length of the lower crossbeam is greater than that of the upper crossbeam, and its two ends extend symmetrically outward to form a working area; platform support rods perpendicular to the lower crossbeam are horizontally set on the outer sides of the front and rear sides of the lower crossbeam, and the upper part of the lower crossbeam and the platform support rods together form a working platform, and the railing is set on the outer side of the working platform; the left and right outward cantilevered portions of the lower crossbeam are provided with guide holes for guiding the driving of steel pipe piles; when the guide frame is connected to the Bailey bridge beam of the steel trestle bridge, the upper crossbeam is fixedly connected to the Bailey bridge beam, and the working platform and the railing are both located below the Bailey bridge beam. This method utilizes a sunken platform design, with the working platform located beneath the Bailey bridge, effectively realizing a low-elevation working space. It solves the problem that existing steel trestle bridge construction is only suitable for hoisting and driving relatively short steel pipe pile segments, allowing for the hoisting of longer steel pipe pile segments in a single operation. This reduces the number of steel pipe pile segments required for connection, ensures accurate positioning of the steel pipe piles, eliminates the need for pile cutting, improves construction efficiency, and reduces construction costs. The lower crossbeams extending to both sides provide a spacious working area and integrate a guiding function for driving the steel pipe piles. The fence installation ensures construction safety.

[0009] As a preferred technical approach: the upper crossbeam comprises two parallel horizontal main beams, each made of double-I-beams, connected by a connecting beam; the vertical members comprise two parallel vertical main members, each made of double-I-beams, connected by a connecting beam; the lower crossbeam comprises two parallel horizontal main beams, each made of double-I-beams, connected by a connecting beam; and each connecting beam used in each structural component is at least a single I-beam. The use of double-I-beams in all major structural components significantly enhances the overall rigidity and load-bearing capacity of the guide frame. The connecting beams ensure the integrity and stability of the structure, and the standardized steel profiles facilitate procurement, processing, and installation.

[0010] As a preferred technical approach, the connecting beams located between the front and rear horizontal main beams of the lower crossbeam on both the left and right sides of each guide hole are made of double-span I-beams. The use of double-span connecting beams around the guide holes specifically strengthens the structural strength of the guiding area, ensuring that the guiding device does not deform during repeated driving of the steel pipe piles, thus improving the accuracy and stability of the steel pipe pile positioning.

[0011] As a preferred technical approach, the platform support rods are made of single I-beams, arranged at equal intervals of 5 to 8 groups along the length of the lower crossbeam. The evenly spaced platform support rods rationally distribute the load, and the use of single I-beams ensures strength while controlling the structural weight, providing a reliable support foundation for the work platform.

[0012] As a preferred technical means, the fence is constructed using steel pipes with an outer diameter of 45mm to 50mm, connected by welding and / or bolting. The materials and connection methods of the fence ensure its sturdiness while balancing ease of installation and structural reliability, providing necessary safety protection for high-altitude operations.

[0013] As a preferred technical approach: the vertical height of the guide frame is 3300mm to 3600mm; the length of the upper crossbeam is 3900mm to 4100mm; the length of the lower crossbeam is 5900mm to 6200mm; and the front-to-back width of the upper and lower crossbeams is 1050mm to 1250mm. This optimized dimensional proportion strikes a balance between structural strength and ease of construction. The vertical height ensures that the upper part can be connected to the Bailey bridge, while the lower working platform and railing are lower than the bottom of the Bailey bridge, providing greater convenience during steel pipe pile driving.

[0014] As a preferred technical means, the diameter of the guide hole is 680mm to 720mm. This can effectively guide the insertion of steel pipe piles with a diameter of about 630mm. The reasonable matching between the diameter of the guide hole and the diameter of the steel pipe pile ensures both guiding accuracy and leaves an appropriate gap, facilitating the smooth insertion of the steel pipe pile while effectively controlling deviation.

[0015] Another technical solution of the present invention is: a construction method for driving steel pipe piles and guide frames for a temporary steel trestle bridge for underwater crossing tower construction.

[0016] A construction method for a temporary steel trestle bridge with steel pipe pile driving guide frame for underwater tower construction uses the aforementioned guide frame, and the method includes the following steps: Install the guide frame at the front end of the completed trestle bridge; The guide holes of the guide frame are used for positioning and driving of steel pipe piles; The distribution beam at the top of the steel pipe pile is installed using the working platform of the guide frame.

[0017] As a preferred technical means, the positioning and driving of the steel pipe piles includes the following steps: S1: Secure the upper crossbeam of the guide frame to the Bailey beam of the previous span of the steel trestle bridge that has been installed using U-bolts; S2: Construction workers enter the work platform to prepare for work; S3: Hoist the steel pipe pile and pass it from top to bottom through the guide hole on the lower crossbeam; S4: After the steel pipe pile is inserted, it is temporarily fixed to the pre-laid design pile position using an adjustable positioning clamp, and then driven in using a pile hammer; during the driving process, the distance between the steel pipe pile and the adjustable positioning clamp is monitored in real time to ensure that the pile position is consistent with the design position; S5: After the first section of steel pipe pile is driven to the predetermined depth, the second section of steel pipe pile is lifted and aligned with the top of the first section of steel pipe pile that has been driven in. S6: Adjust the verticality of the second section of steel pipe pile, use connecting clamps to temporarily fix it to the first section of steel pipe pile, and then complete the equal strength connection between the pile sections; S7: Continue using the pile hammer to drive the connected steel pipe pile to the design elevation. This effectively utilizes the guide frame and facilitates the steel pipe pile driving process. The sunken work platform allows construction personnel to easily operate the docking section, improving the efficiency of the docking operation and effectively optimizing the standardized process of steel pipe pile driving and docking.

[0018] As a preferred technical approach, the aforementioned pile top-related operations include the following steps: T1: After the steel pipe piles are driven to the design elevation, the construction workers use the work platform to make openings or cuts on the top of the piles; T2: Construction workers use a work platform to weld reinforcing ring plates or stiffening ribs around the opening to compensate for the stiffness loss caused by the opening. T3: The crane lifts a single distribution beam and slowly lowers it. The distribution beam is usually a double-I-beam. Construction workers stand on the working platform of the guide frame to help guide the distribution beam so that it falls accurately into the pre-cut opening or the set support plate on the top of the steel pipe pile. T4: Construction workers use tools on the platform to fine-tune the plane position and elevation of the distribution beam to make it fully meet the design requirements. After adjustment, they use temporary clamps or spot welding to fix it to the top of the pile. T5: After confirming the location is correct, construction workers perform comprehensive welding on the connection nodes between the distribution beam and the top of the steel pipe pile on the platform to form a stable connection. By directly utilizing the sunken working platform of the guide frame, the cumbersome procedures, time, and costs of separately erecting and dismantling high-altitude working platforms are avoided. This provides a safe, stable, and easily accessible working environment for the pile top. High-altitude operations such as the installation, adjustment, and welding of the distribution beam can be completed on a safe and standardized platform. This avoids the risks workers face on the pile top or temporary facilities without reliable protection, as is done in traditional operations. This ensures safety while improving installation efficiency and connection quality.

[0019] Beneficial effects: 1. By lowering the work platform below the Bailey beam, a low-elevation work space is created, which effectively increases the length of the steel pipe pile segment hoisted in a single operation, greatly reducing the risks of verticality deviation and welding quality caused by multiple extensions.

[0020] 2. The guide frame adopts a full double-span I-beam structure, which has high rigidity and good stability. The guide hole is specially reinforced to ensure accurate positioning of the steel pipe pile. The integrated design allows multiple processes such as positioning, driving, splicing, and pile top treatment to be completed on the same platform, reducing equipment adjustment and process changeover time.

[0021] 3. The sturdy fence and spacious work platform provide a safe and reliable working environment for construction workers; the structure has high stability and can withstand the vibration and impact during the piling process.

[0022] 4. Reducing the number of times steel pipe piles are spliced ​​saves welding materials and labor costs; improved construction accuracy avoids rework and material waste caused by misalignment.

[0023] 5. It can be directly applied to the cantilever propulsion method (fishing method) construction process. By directly utilizing the sunken working platform of the guide frame, the cumbersome procedures, time and cost of separately setting up and dismantling the high-altitude working platform are avoided. It provides a safe, stable and easily accessible working environment for the pile top. High-altitude operations such as the installation, adjustment and welding of the distribution beam can be completed on a safe and standardized platform. This avoids the risky work of workers on the pile top or temporary facilities without reliable protection in traditional operations, which not only ensures safety but also improves installation efficiency and connection quality. Attached Figure Description

[0024] Figure 1 This is a front view schematic diagram of the guide frame structure of the present invention.

[0025] Figure 2 This is a side view schematic diagram of the guide frame structure of the present invention.

[0026] Figure 3 This is the present invention. Figure 1 Schematic diagram of the line of sight from AA.

[0027] Figure 4 This is the present invention. Figure 1 Schematic diagram of the view from the middle BB.

[0028] Figure 5 This is a schematic diagram of the installation position of the guide frame of the present invention during construction.

[0029] In the diagram: 1. Upper crossbeam; 2. Vertical rod; 3. Lower crossbeam; 4. Platform support rod; 5. Guide hole; 6. Connecting beam; 7. Working platform; 8. Fence; 9. Steel pipe pile; 10. Distribution beam; 11. Crane. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] like Figures 1-5 As shown in the figure, this embodiment is a guide frame for driving steel pipe piles for a temporary steel trestle bridge during the construction of a 500 kV transmission line tower in water. The guide frame has a symmetrical structure, including an upper crossbeam 1, vertical rods 2, a lower crossbeam 3, and a railing 8. The upper crossbeam 1 is connected to the lower crossbeam 3 below it through vertical rods 2 set vertically on the left and right sides of its bottom. The left and right length of the lower crossbeam 3 is 6000 mm, the left and right length of the upper crossbeam 1 is 4000 mm, and the left and right lengths of the lower crossbeam 3 are each 1000 mm longer than the left and right lengths of the upper crossbeam 1. The vertical height of the guide frame is 3400 mm. The upper crossbeam 1, The vertical rod 2 and the lower crossbeam 3 have a front-to-back width of 1100mm. Five horizontal platform support rods 4, perpendicular to the lower crossbeam 3, are arranged at equal intervals along the length of the outer sides of the front and back sides of the lower crossbeam 3. The platform support rods 4 are 500mm long. The working platform 7 is laid on the lower crossbeam 3 and the platform support rods 4. The outer side of the working platform 7 is equipped with a fence 8. The left and right extensions of the lower crossbeam 3 are provided with guide holes 5 for guiding the driving of steel pipe piles 9. When the guide frame is connected to the Bailey beam of the steel trestle bridge, the upper crossbeam 1 is fixedly connected to the Bailey beam, and the working platform 7 and the fence 8 are both located below the Bailey beam.

[0032] To enhance the overall rigidity and load-bearing capacity of the guide frame, the upper crossbeam 1 comprises two parallel horizontal main beams made of double-jointed No. 20 I-beams; the vertical rods 2 comprise two parallel vertical main rods made of double-jointed No. 20 I-beams, connected by two connecting beams 6 at the top and middle; the lower crossbeam 3 comprises two parallel horizontal lower main beams made of double-jointed No. 20 I-beams, connected by four connecting beams 6; the platform support rod 4 is made of a single No. 10 I-beam. The use of double-jointed No. 20 I-beams for all major structural components significantly enhances the overall rigidity and load-bearing capacity of the guide frame. The connecting beams 6 ensure the integrity and stability of the structure, and the uniform steel type facilitates procurement, processing, and installation.

[0033] To enhance the structural strength of the guiding area, the connecting beams 6 on both sides of each guiding hole 5, located between the front and rear horizontal main beams of the lower crossbeam 3, are made of No. 20 double-beam H-beams. The remaining connecting beams 6 in each structural component are made of No. 20 single-beam H-beams. The use of double-beam connecting beams 6 around the guiding holes 5 specifically strengthens the structural strength of the guiding area, ensuring that the guiding device does not deform during repeated driving of the steel pipe piles 9, and improving the positioning accuracy and stability of the steel pipe piles 9.

[0034] In this embodiment, the fence 8 is constructed using steel pipes with an outer diameter of 48mm, connected by welding and / or bolting. The materials and connection methods of the fence 8 ensure the sturdiness of the guardrail, while also considering ease of installation and structural reliability, providing necessary safety protection for high-altitude operations.

[0035] In this embodiment, the diameter of the guide hole 5 is 700mm, and the guide hole 5 can be welded and fixed to the lower crossbeam 3 by a circular steel ring. This can effectively guide the insertion of steel pipe piles 9 with a diameter of 630mm. The reasonable matching between the diameter of the guide hole 5 and the diameter of the steel pipe pile 9 ensures both guiding accuracy and leaves an appropriate gap, facilitating the smooth insertion of the steel pipe pile 9 while effectively controlling deviation.

[0036] Through the sunken platform design, the working platform 7 is located below the Bailey beam, effectively realizing a low-elevation working space. This solves the problem that existing steel trestle bridge construction is only suitable for hoisting and driving relatively short segments of steel pipe piles 9, allowing for the hoisting of longer segments of steel pipe piles 9 in a single operation. This reduces the number of steel pipe pile 9 segments to be joined. In this embodiment, the length of the hoistable steel pipe pile 9 segments has increased from the traditional 27m to 30m. The total length of the steel pipe in this embodiment is 60m, requiring only two segments of steel pipe pile 9 and two hoisting operations, eliminating the need for pile cutting. The guide hole 5 ensures accurate positioning of the steel pipe pile 9, improving construction efficiency and reducing construction costs. The lower crossbeams extending to both sides provide a spacious working area and integrate the guiding function for driving the steel pipe pile 9. The fence 8 ensures construction safety.

[0037] A construction method for a temporary steel trestle bridge for underwater tower construction using a guide frame for driving steel pipe piles is proposed. The guide frame is applied to the cantilever advancement method (fishing method) construction process. During the span-by-span advancement construction, the guide frame is used to complete the positioning, driving, and pile top related operations of the steel pipe piles 9.

[0038] The positioning and driving of steel pipe pile 9 includes the following steps: S1: At the front end of the completed "starting span" trestle, the guide frame of the present invention is securely fixed to the end of the Bailey beam of the previous span using U-bolts via its upper crossbeam 1. At this time, the lower crossbeam 3 of the guide frame and its working platform 7 are located below the Bailey beam, and the working platform 7 is about 1.5m below the bottom of the Bailey beam; S2: Construction workers enter work platform 7 to prepare for work; S3: Use crane 11 to lift the first section of steel pipe pile 9, which is 30 meters long, and lower it vertically and slowly through the guide hole 5 with a diameter of 700 mm on the lower crossbeam of the guide frame; S4: During the lowering process, the pile body is always constrained by the guide hole 5, which initially ensures the verticality. When the pile tip touches the riverbed, the construction personnel stand on the working platform 7 and use the pile position that has been marked out on the platform in advance to accurately fix the bottom of the steel pipe pile 9 in the design position through the adjustable positioning clamp (triangle plate). After fixing, the pile hammer is started and the driving begins. During the entire driving process, the construction personnel stand on the stable working platform 7 and can easily observe the gap between the steel pipe pile 9 and the adjustable positioning clamp (triangle plate), monitor in real time and ensure that the pile body does not deviate until the first pile section is driven to the predetermined depth. S5: After the first section of steel pipe pile 9 is driven to the predetermined depth, the top of the first section of steel pipe pile 9 is located in a construction position that is convenient for construction personnel to operate on the working platform 7. The crane 11 lifts the second section of 30-meter-long steel pipe pile 9 and lowers it through the guide hole 5 to align it with the top of the first section of pile that has been driven in. The alignment operation is relatively convenient. S6: On the work platform 7, the construction workers use a theodolite or plumb bob to check the verticality of the second pile section. After confirming that there is no error, the interface of the two pile sections is temporarily spot welded and fixed with a "connecting clamp (horse plate)". Then, the construction workers perform circumferential welding at the pile section joint on the spacious work platform 7 to complete the equal strength connection. Since the joint position is located on the work platform 7, it is in a convenient position for the construction workers on the work platform 7, which can reduce the difficulty of construction work and improve the convenience of jointing. S7: After the weld has cooled and passed inspection, remove the connecting clamp (horse plate) and continue to use the pile hammer to drive the connected steel pipe pile 9 to the design elevation.

[0039] The work related to the top of the pile includes the following steps: T1: After the steel pipe pile 9 is driven to the design elevation, its top is located about 1.7m above the guide frame working platform 7. Construction personnel do not need to erect an additional suspended platform or scaffolding. Using the working platform 7, construction personnel can easily approach the top of the steel pipe pile 9. According to the design drawings, they can accurately measure and mark the designated position on the top of the steel pipe pile 9, marking the shape and size of the opening to be cut. Construction personnel use a plasma cutter or oxy-acetylene flame cutting equipment, standing on the stable working platform 7, to cut the wall of the steel pipe pile 9 along the marked line. The working platform 7 provides a stable foothold and enough space to place equipment, ensuring the flatness and accuracy of the cut surface. T2: After the cutting is completed, the workers immediately grind and clean the cut on the platform, and according to the design requirements, use the work platform 7 to weld reinforcing ring plates or stiffening ribs around the opening to compensate for the stiffness loss caused by the opening. T3: After the steel pipe piles 9 are driven and the pile tops are treated at the two guide holes 5 of the guide frame, the guide frame and its working platform 7 remain fixed in place, providing an ideal construction base for the installation of the distribution beam 10. When the distribution beam 10 is installed, the crane 11 lifts up a single distribution beam 10 and slowly lowers it. The distribution beam 10 is usually made of double-jointed I-beams. The construction workers stand on the working platform 7 of the guide frame to assist in guiding the distribution beam 10 so that it accurately falls into the pre-cut opening or the set support plate on the top of the steel pipe pile 9. T4: Construction workers use tools such as jacks and crowbars on the platform to fine-tune the plane position and elevation of the distribution beam 10 to make it fully meet the design requirements. After adjustment, they use temporary clamps or spot welding to fix it to the top of the pile. T5: After confirming that the position is correct, the construction workers carried out a comprehensive welding operation on the connection node between the distribution beam 10 and the top of the steel pipe pile 9 on the platform to form a stable connection.

[0040] Construction is carried out by directly utilizing the sunken working platform 7 of the guide frame, providing a safe, stable and easily accessible working environment for the pile top. High-altitude operations such as driving, connecting, and treating the pile top of the steel pipe pile 9, and installing, adjusting, and welding the distribution beam 10 can be completed on a safe and standardized platform. This avoids the risky work that workers would have to do on the pile top without reliable protection or on temporary facilities during traditional operations. This not only ensures safety but also improves installation efficiency and connection quality, and avoids the cumbersome procedures, time, and costs of setting up and dismantling the high-altitude working platform 7.

[0041] The specific embodiments shown above demonstrate the outstanding substantive features and significant progress of the present invention. Based on the actual needs of use, equivalent modifications in shape, structure, etc., can be made to them under the guidance of the present invention, and all such modifications are within the scope of protection of this solution.

Claims

1. A guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction, characterized in that: The guide frame is a symmetrical structure, including an upper crossbeam, vertical rods, a lower crossbeam, and a railing. The upper crossbeam is connected to the lower crossbeam via vertical rods on its bottom left and right sides. The lower crossbeam has a longer left and right length than the upper crossbeam, and its two ends extend symmetrically outward to form a working area. Platform support rods perpendicular to the lower crossbeam are horizontally arranged on the outer sides of the front and rear sides of the lower crossbeam. The lower crossbeam and the platform support rods together form a working platform, and the railing is installed on the outer side of the working platform. The left and right cantilevered portions of the lower crossbeam are provided with guide holes for guiding the driving of steel pipe piles. When the guide frame is connected to the Bailey bridge beam of the steel trestle, the upper crossbeam is fixedly connected to the Bailey bridge beam, and the working platform and the railing are both located below the Bailey bridge beam.

2. The guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction as described in claim 1, characterized in that: The upper crossbeam includes two horizontal main beams arranged parallel to each other, each horizontal main beam being made of double-I-beams, and the two horizontal main beams are connected by a connecting beam; the vertical rod includes two vertical main rods arranged parallel to each other, each vertical main rod being made of double-I-beams, and the two vertical main rods are connected by a connecting beam; the lower crossbeam includes two horizontal main beams arranged parallel to each other, each horizontal main beam being made of double-I-beams, and the two horizontal main beams are connected by a connecting beam; the connecting beam used in each structural component is at least a single I-beam.

3. The guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction as described in claim 2, characterized in that: On the left and right sides of each of the guide holes, the connecting beams located between the front and rear horizontal main beams of the lower crossbeam are made of double-I-beams.

4. The guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction as described in claim 3, characterized in that: The platform support rods are made of single I-beams and are arranged in 5 to 8 groups at equal intervals along the length of the lower crossbeam.

5. The guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction as described in claim 4, characterized in that: The fence is constructed using steel pipes with an outer diameter of 45mm to 50mm, connected by welding and / or bolting.

6. The guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction as described in claim 5, characterized in that: The vertical height of the guide frame is 3300mm to 3600mm; the length of the upper crossbeam is 3900mm to 4100mm; the length of the lower crossbeam is 5900mm to 6200mm; and the front-to-back width of the upper and lower crossbeams is 1050mm to 1250mm.

7. The guide frame for driving steel pipe piles for a temporary steel trestle bridge during underwater tower construction as described in claim 6, characterized in that: The diameter of the guide hole is 680mm to 720mm.

8. A construction method for driving steel pipe piles and guiding frames for a temporary steel trestle bridge during underwater tower construction, characterized in that: The method of using a temporary steel trestle bridge for underwater crossing tower construction, as described in any one of claims 1-7, comprises the following steps: Install the guide frame at the front end of the completed trestle bridge; The guide holes of the guide frame are used for positioning and driving of steel pipe piles; The distribution beam at the top of the steel pipe pile is installed using the working platform of the guide frame.

9. The construction method for driving steel pipe piles and guiding frames for a temporary steel trestle bridge for underwater crossing tower construction according to claim 8, characterized in that: The positioning and driving of the steel pipe piles Includes the following steps: S1: Secure the upper crossbeam of the guide frame to the Bailey beam of the previous span of the steel trestle bridge that has been installed using U-bolts; S2: Construction workers enter the work platform to prepare for work; S3: Hoist the steel pipe pile and pass it from top to bottom through the guide hole on the lower crossbeam; S4: After the steel pipe pile is inserted, it is temporarily fixed to the pre-laid design pile position using an adjustable positioning clamp, and then driven in using a pile hammer; during the driving process, the distance between the steel pipe pile and the adjustable positioning clamp is monitored in real time to ensure that the pile position is consistent with the design position; S5: After the first section of steel pipe pile is driven to the predetermined depth, the second section of steel pipe pile is lifted and aligned with the top of the first section of steel pipe pile that has been driven in. S6: Adjust the verticality of the second section of steel pipe pile, use connecting clamps to temporarily fix it to the first section of steel pipe pile, and then complete the equal strength connection between the pile sections; S7: Continue to use the pile driver to drive the connected steel pipe pile to the design elevation.

10. The construction method for a temporary steel trestle bridge with steel pipe pile driving guide frame for underwater crossing tower construction according to claim 8, characterized in that: The installation of the distribution beam at the top of the pile includes the following steps: T1: After the steel pipe piles are driven to the design elevation, the construction workers use the work platform to make openings or cuts on the top of the piles; T2: Construction workers use a work platform to weld reinforcing ring plates or stiffening ribs around the opening to compensate for the stiffness loss caused by the opening. T3: The crane lifts a single distribution beam and slowly lowers it. The distribution beam is usually a double-I-beam. Construction workers stand on the working platform of the guide frame to help guide the distribution beam so that it falls accurately into the pre-cut opening or the set support plate on the top of the steel pipe pile. T4: Construction workers use tools on the platform to fine-tune the plane position and elevation of the distribution beam to make it fully meet the design requirements. After adjustment, they use temporary clamps or spot welding to fix it to the top of the pile. T5: After confirming that the position is correct, the construction workers carry out a comprehensive welding operation on the platform to connect the distribution beam and the top of the steel pipe pile, forming a stable connection.

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