Deep marine soft soil super-long steel pipe pile steel trestle and construction method

Abstract

The invention relates to a deep marine soft soil super-long steel pipe pile steel trestle and a construction method. The construction method comprises the following steps of setting angle steel sliding rail construction, qualitative steel pipe pile guide frame installation, hanging type safety operation platform installation, transverse connection welding, panel track laying and next section construction. The method has the beneficial effects that the qualitative steel pipe pile guide frame is adopted, accurate positioning of the position of the steel pipe pile can be achieved, and high efficiency and safety in the construction process are ensured; the shaped angle steel sliding rails and the panel rails are ingenious in design and have higher multifunctionality and practical value; the sleeve arranged at the end part of the crawler crane can ensure that the steel pipe pile can be accurately positioned, so that the construction error is reduced, and the safety and the construction efficiency in the driving process are favorably improved; the hanging type safe operation platform can be rapidly installed, the height can be adjusted, and the safety of constructors is guaranteed; the bailey beam combined limiting piece is simple in structure and convenient to construct quickly.

Description

Technical Field

[0001] The invention belongs to the field of civil engineering, and in particular relates to an ultra-long steel pipe pile steel trestle in deep marine soft soil and a construction method thereof. Background Art

[0002] In areas with deep marine soft soil, the application of ultra-long steel pipe piles and steel trestles provides a new structural idea for bridge construction. The geological conditions in this area are complex, the soil is weak and has limited bearing capacity, and the traditional foundation forms face severe tests due to multiple factors such as tides and salt erosion in the marine environment. Therefore, the use of steel pipe piles as the foundation form can not only effectively transfer loads, but also adapt to the special needs of soft soil layers, laying the foundation for the stability of subsequent structures.

[0003] As a temporary structure, the steel trestle construction platform is often located in rivers or coastal environments and is directly affected by natural forces such as water flow and waves. In these high-velocity waters, the construction platform needs to consider a variety of loads, such as water flow force, wave force, and additional loads generated by drilling rigs, transportation machinery, overweight equipment, and cargo loading during the construction process. The superposition of these external forces makes the stability and safety of the construction platform an important issue that needs to be solved in the project.

[0004] Since the safety of the construction platform is directly related to the overall construction process of the bridge project and the safety of the construction personnel, its design and construction must fully consider the various loads and their dynamic effects in the harsh environment. Only by ensuring that the construction platform is always in a stable and reliable state during temporary use can a solid guarantee be provided for the subsequent bridge construction. This requires scientific planning and strict deployment in construction methods and engineering organization to ensure that various construction measures and safety precautions are implemented. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an ultra-long steel pipe pile steel trestle in deep marine soft soil and a construction method thereof.

[0006] This deep marine soft soil ultra-long steel pipe pile steel trestle construction system includes a standardized angle steel slide rail, a crawler crane, a standardized steel pipe pile guide frame, steel pipe piles and a hanging safety operation platform; the standardized angle steel slide rail is fixed on the river bank; the steel pipe piles are supported under the steel trestle, and a panel track is provided on the bridge deck of the steel trestle, the panel track is connected to the standardized angle steel slide rail, the standardized steel pipe pile guide frame is clamped at the front end of the panel track of the constructed section of the steel trestle, and is used for guiding the steel pipe piles of the section to be constructed of the steel trestle; the crawler crane is located on the panel track, and is used for driving the steel pipe piles of the section to be constructed of the steel trestle; the hanging safety operation platform includes a cantilever screw rod, and the hanging safety operation platform is fixed to the side of the steel pipe pile through the cantilever screw rod; and a cross-connection is welded between the steel pipe piles.

[0007] Preferably, anchor rods are inserted into the top of the river bank, and dowel bars are inserted into the sides of the river bank; sockets and slide grooves are symmetrically provided on both sides of the top of the standardized angle steel slide rail, a socket is provided in the center of the top of the standardized angle steel slide rail, and side sockets are provided on the sides of the standardized angle steel slide rail; the anchor rods pass through the sockets and are fastened with fixing nuts, and the dowel bars pass through the side sockets and are fastened with nuts; slide grooves are symmetrically provided on both sides of the top of the panel rail, and a socket is provided in the center of the top, and the slide grooves of the panel rail and the standardized angle steel slide rail are connected.

[0008] Preferably, the crawler crane comprises an operating device, a vertical rod and a support rod; the operating device is located at the top of the crawler crane, and the operating device is connected to a boom; a fixed sleeve is provided at the end of the boom; a sleeve is connected to one end of the support rod, and the other end is connected to the boom through a fixed sleeve; the vertical rod is connected to the support rod through a sleeve; a casing is connected to the bottom end of the vertical rod, and the casing is sleeved on the top of the steel pipe pile; rollers are provided at the bottom of the crawler crane, and crawlers are connected between the rollers; the crawler crane moves on the panel track through the crawlers.

[0009] Preferably, the standardized steel pipe pile guide frame includes a guide frame guide section and a guide frame fixed section; the guide frame guide section includes a positioning plate, several positioning plates are vertically arranged and penetrated with a reserved opening, and the reserved opening is sleeved with a steel pipe pile; vertical connecting plates and fixed strips are fixed on both sides of the positioning plate, and a transverse connecting plate is fixed on the other side of the vertical connecting plate, the transverse connecting plate is connected to a cross bar, the cross bar is connected to a hanging plate, and the guide frame guide section is connected to the guide frame fixed section through the hanging plate; a movable guide frame bottom plate is provided at the bottom of the guide frame fixed section, and a plurality of bolt sockets are provided on the movable guide frame bottom plate, and slide plates are provided at both ends of the bottom of the movable guide frame bottom plate, and the slide plates are clamped in the slide groove of the standardized angle steel slide rail or the panel track.

[0010] Preferably, the guide frame fixed section of the qualitative steel pipe pile guide frame includes an oblique brace and a horizontal plate; the oblique brace and the horizontal plate are connected to the side of the suspension plate of the guide frame guide section, a jack and a lifting rod are connected between the horizontal plate and the bottom plate of the movable guide frame, and the lifting rod is welded to the bottom of the horizontal plate; a transverse plate is connected between the horizontal plates, and a pressure plate is set between the transverse plates; a telescopic jack and a telescopic rod are connected to the center of the bottom of the pressure plate in sequence, a telescopic rod reserved hole is opened horizontally through the lower part of the telescopic rod, a fixed sleeve is set on the lower part of the telescopic rod, and a pin is fixed through the fixed sleeve and the telescopic rod reserved hole. The bolt socket is fixedly connected to the socket of the standardized angle steel slide rail or the socket of the panel track.

[0011] Preferably, the suspended safety operating platform includes a crossbeam, a construction platform and a cantilever screw; a slot is provided on the top of the steel pipe pile, and the crossbeam is fixed in the slot; the cantilever screw passes through the steel pipe pile and the crossbeam, and a pulley is provided on the outer part of the cantilever screw on the steel pipe pile; the pulley is connected to a steel wire rope, and an ear plate and a winch are provided on the top of the construction platform, and the steel wire rope connects the ear plate and the winch.

[0012] Preferably, the steel trestle includes a longitudinal support beam; columns are provided at the bottom of the longitudinal support beam, Bailey trusses are connected between the columns, and longitudinal beams are provided at the bottom of the columns; a cross beam is connected between the longitudinal beam and the steel pipe piles, triangular limit pieces are symmetrically welded at the ends of the cross beam, and a T-shaped limit piece is welded at the center of the top of the cross beam; the triangular limit piece is supported on the side of the outermost longitudinal beam, and the T-shaped limit piece is pressed onto the innermost longitudinal beam.

[0013] The construction method of the ultra-long steel pipe pile steel trestle in deep marine soft soil comprises the following steps:

[0014] Step 1: After fixing the shaped angle steel slide rail and the river bank, assemble the shaped steel pipe pile guide frame and install it on the shaped angle steel slide rail;

[0015] Step 2: Use a crawler crane to insert the steel pipe pile into the qualitative steel pipe pile guide frame and drive it into the deep marine soft soil to the designated position;

[0016] Step 3: hoist the hanging safety operation platform and weld the cross-connections between the steel pipe piles;

[0017] Step 4: construct the steel trestle on the steel pipe piles and lay the panel track above the bridge deck;

[0018] Step 5: Slide the qualitative guide frame and crawler crane forward along the panel track, continue to insert steel pipe piles and construct the steel trestle, and repeat steps 3 to 5 until the construction is completed.

[0019] The beneficial effects of the present invention are:

[0020] 1) The qualitative steel pipe pile guide frame involved in the present invention is exquisitely designed, capable of accurately positioning the steel pipe piles, and quickly adjusting the position of the guide frame according to the on-site conditions, reducing the time for repositioning, and thus improving work efficiency. The verticality of the steel pipe piles is ensured by adopting a multi-layer positioning plate, and screws and pressure plates are equipped to ensure the stability of the structure and prevent overturning during construction. The provided lifting jack enables the guide frame to be raised and lowered quickly, further improving construction efficiency. The invention ensures high efficiency and safety during the construction process by optimizing the positioning, adjustment and lifting functions.

[0021] 2) The present invention adopts standardized angle steel slide rails and panel rails, which are cleverly designed and have multiple functions. The standardized angle steel slide rails not only serve as the fixed base of the steel pipe pile guide frame, but also serve as slide rails to achieve smooth movement of the guide frame. The panel rails can also serve as the fixed base of the steel pipe pile guide frame and as slide rails, further improving the stability and flexibility of the guide frame. In addition, the panel rails can also be used as the walking support plate of the crawler crane to enhance the crane's carrying capacity and walking stability. At the same time, they can also be used as the bridge deck of the trestle, which has higher versatility and practical value.

[0022] 3) The present invention sets a sleeve at the end of the crawler crane, which can effectively improve the accuracy of steel pipe pile driving and avoid deviation. The sleeve provides additional support and guidance, so that the steel pipe pile always maintains a stable vertical direction during the driving process, ensuring that the steel pipe pile can be accurately positioned and reducing construction errors. At the same time, the setting of the sleeve helps to improve the safety and construction efficiency during the driving process, avoid re-construction or positioning adjustment due to deviation, and further optimize the construction process.

[0023] 4) The present invention adopts a hanging safety operation platform with a simple and efficient design. It cleverly uses the steel pipe piles that have been driven as a supporting structure to provide a stable working platform for cross-joint welding construction at different elevations. The hanging platform can be quickly installed and adjusted in height to ensure that workers can perform welding operations in a safe and stable environment. By optimizing the design of the platform, construction workers can complete cross-joint welding more efficiently, greatly improving construction efficiency while reducing the time and resources wasted due to platform construction.

[0024] 5) The present invention adopts a Bailey beam combined limiter, which has a simple structure and is easy to construct quickly. The limiter can effectively control the up and down and horizontal movement of the Bailey beam to ensure that the Bailey beam remains accurately positioned during the installation process. Through this limiter, the Bailey beam can be effectively prevented from being displaced during the construction process, ensuring its stability and safety, thereby further ensuring the stability of the overall structure of the trestle and improving construction efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of an ultra-long steel pipe pile steel trestle in deep marine soft soil;

[0026] Figure 2 It is a three-dimensional schematic diagram of the detailed structure of the standardized angle steel slide rail;

[0027] Figure 3 It is a three-dimensional schematic diagram of the shellfish truss beam construction;

[0028] Figure 4 It is a three-dimensional schematic diagram of the panel track;

[0029] Figure 5 It is a three-dimensional schematic diagram of the Bailey beam combination limiter;

[0030] Figure 6 It is a three-dimensional schematic diagram of the crawler crane structure;

[0031] Figure 7 This is a three-dimensional schematic diagram of the construction of the first section of the steel pipe pile guide frame;

[0032] Figure 8 It is a three-dimensional schematic diagram of the detailed structure of the river bank;

[0033] Fig. 9 It is a three-dimensional schematic diagram of the detailed structure of the qualitative steel pipe pile guide frame;

[0034] Fig.10 It is a three-dimensional schematic diagram of the bottom structure of the qualitative steel pipe pile guide frame;

[0035] Fig.11 It is a three-dimensional schematic diagram of the construction of a suspended safety operating platform;

[0036] Fig.12 It is a three-dimensional schematic diagram of the steel pipe pile cross-connection construction;

[0037] Fig.13 It is a cross-sectional view of the detailed structure of the pressure plate.

[0038] Description of the accompanying drawings: 1-suspension plate, 2-cross bar, 3-cross-connecting plate, 4-vertical connecting plate, 5-positioning plate, 6-fixed strip plate, 7-qualitative steel pipe pile guide frame, 8-reserved opening, 9-casing, 10-vertical bar, 11-sleeve, 12-support rod, 13-fixed sleeve, 14-suspender rod, 15-diagonal support, 16-vertical support, 17-horizontal plate, 18-pressing plate, 19-cross plate, 20-operating device, 21-crawler crane, 22-crawler, 23-roller, 24-panel track, 25-slide, 26-jack, 27-longitudinal support beam, 28-column, 29-Bailey truss, 30-triangular limiter, 31-cross connection, 32-cross beam, 33-longitudinal beam, 34-steel pipe pile , 35-jack, 36-lifting rod, 37-socket, 38-winch, 39-shaped angle steel slide rail, 40-side socket, 41-steel pipe pile socket, 42-river bank, 43-anchor rod, 44-rebar, 45-wire rope, 46-T-shaped limiter, 47-slot, 48-steel pipe hole, 49-fixed sleeve, 50-screw, 51-bolt, 52-nut, 53-bolt socket, 54-fixed nut, 55-construction platform, 56-telescopic rod, 57-ear plate, 58-slide plate, 59-pin, 60-mobile guide frame bottom plate, 61-steel pipe socket, 62-cantilever screw, 63-fastening bolt, 64-pulley, 65-telescopic jack, 66-telescopic rod reserved hole. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for ordinary persons in the art, without departing from the principle of the present invention, the present invention can also be modified in some ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0040] Embodiment 1

[0041] As an example, Figures 1 to 13As shown in the figure, this construction system for a super-long steel pipe pile steel trestle in deep marine soft soil includes a standardized angle steel slide rail 39, a crawler crane 21, a standardized steel pipe pile guide frame 7, a steel pipe pile 34, and a hanging safety operation platform. The standardized angle steel slide rail 39 is fixed on the river embankment 42. The steel pipe pile 34 supports under the steel trestle. There is a panel track 24 on the steel trestle deck. The panel track 24 is connected to the standardized angle steel slide rail 39. The standardized steel pipe pile guide frame 7 is clamped at the front end of the panel track 24 of the constructed section of the steel trestle for guiding the steel pipe pile 34 of the to-be-constructed section of the steel trestle. The crawler crane 21 is located on the panel track 24 for driving in the steel pipe pile 34 of the to-be-constructed section of the steel trestle. The hanging safety operation platform includes a cantilever screw 62, and the hanging safety operation platform is fixed on the side of the steel pipe pile 34 through the cantilever screw 62. The cross braces 31 are welded between the steel pipe piles 34.

[0042] As Figure 2 and Figure 7 As shown in the figure, the standardized angle steel slide rail 39 is used for the fixed installation of the guide frame of the first-section steel pipe pile 34. The standardized angle steel slide rail 39 is fixed on the river embankment 42 through anchor bolts 43 and dowel bars 44. Symmetrically arranged socket openings 37 and sliding grooves 25 are provided on both sides of the top of the standardized angle steel slide rail 39. A jacking hole 26 is provided in the center of the top of the standardized angle steel slide rail 39. A side socket opening 40 is provided on the side of the standardized angle steel slide rail 39.

[0043] As Figure 4 As shown in the figure, the panel track 24 is used for the walking of the crawler crane 21 and the sliding and fixed installation of the standardized steel pipe pile guide frame 7. Symmetrically arranged sliding grooves 25 are provided on both sides of the top of the panel track 24. A jacking hole 26 is provided in the center of the top of the panel track 24.

[0044] As Figure 6 As shown in the figure, the crawler crane 21 is used for driving in the steel pipe pile 34. It includes: a casing 9, a vertical rod 10, a sleeve 11, a support rod 12, a fixed socket head 13, a suspension rod 14, an operating device 20, a crawler crane 21, crawlers 22, rollers 23, and a steel pipe pile jacking hole 41. The casing 9 is arranged below the vertical rod 10. The vertical rod 10 is arranged in the sleeve 11. The sleeve 11 is connected to the support rod 12. The support rod 12 is arranged below the fixed socket head 13. The fixed socket head 13 is arranged at the end of the suspension rod 14. The suspension rod 14 is connected to the operating device 20. Crawlers 22 and rollers 23 are provided at the bottom of the crawler crane 21, and the rollers 23 are connected through the crawlers 22.

[0045] As Figure 7As shown, the qualitative steel pipe pile guide frame 7 is used for positioning the steel pipe pile 34, which includes: a hanging plate 1, a cross bar 2, a cross connecting plate 3, a vertical connecting plate 4, a positioning plate 5, a fixed strip plate 6, a diagonal support 15, a vertical support 16, a horizontal plate 17, a pressure plate 18, a cross plate 19, a jack 35, a lifting rod 36, a fixed sleeve 49, a telescopic rod 56, a slide plate 58, and a movable guide frame bottom plate 60; the qualitative steel pipe pile guide frame 7 includes a guide frame guide section and a guide frame fixed section; the guide frame guide section includes a positioning plate 5, and several positioning plates 5 are arranged vertically and are penetrated with a reserved opening 8, A steel pipe pile 34 is sleeved in the reserved opening 8; vertical connecting plates 4 and fixed strips 6 are respectively fixed on both sides of the positioning plate 5, and a cross connecting plate 3 is fixed on the other side of the vertical connecting plate 4, the cross connecting plate 3 is connected to the cross bar 2, the cross bar 2 is connected to the suspension plate 1, and the guide section of the guide frame is connected to the guide frame fixed section through the suspension plate 1; a movable guide frame bottom plate 60 is provided at the bottom of the guide frame fixed section, and a plurality of bolt sockets 53 are opened on the movable guide frame bottom plate 60, and slide plates 58 are provided at both ends of the bottom of the movable guide frame bottom plate 60, and the slide plate 58 is clamped in the slide groove 25 of the standardized angle steel slide rail 39 or the panel track 24.

[0046] like Fig. 9 and Fig.13 As shown, the guide frame fixed section of the qualitative steel pipe pile guide frame 7 includes an oblique support 15 and a horizontal plate 17; the oblique support 15 and the horizontal plate 17 are connected to the side of the suspension plate 1 of the guide frame guide section, and a jack 35 and a lifting rod 36 are connected between the horizontal plate 17 and the bottom plate 60 of the movable guide frame, and the lifting rod 36 is welded to the bottom of the horizontal plate 17; a transverse plate 19 is connected between the horizontal plates 17, and a pressure plate 18 is set between the transverse plates 19; a telescopic jack 65 and a telescopic rod 56 are connected to the center of the bottom of the pressure plate 18 in sequence, and a telescopic rod reserved hole 66 is opened horizontally through the lower part of the telescopic rod 56, and a fixed sleeve 49 is sleeved on the lower part of the telescopic rod 56, and a pin 59 is fixed through the fixed sleeve 49 and the telescopic rod reserved hole 66. The bolt socket 53 is fixedly connected to the socket 26 of the standardized angle steel slide rail 39 or the socket 26 of the panel track 24.

[0047] In this embodiment, the standardized angle steel slide rail 39 and the panel rail 24 are cleverly designed and have multiple functions. The standardized angle steel slide rail 39 not only serves as the fixed base of the customized steel pipe pile guide frame 7, but also serves as a slide rail to achieve smooth movement of the guide frame. The panel rail can also serve as a fixed base of the customized steel pipe pile guide frame 7 and a slide rail to further enhance the stability and flexibility of the customized steel pipe pile guide frame 7. In addition, the panel rail 24 can also serve as a walking support plate for the crawler crane 21, enhancing the carrying capacity and walking stability of the crawler crane 21. It can also be used as a bridge deck for a steel trestle, which has higher versatility and practical value.

[0048] In this embodiment, a sleeve 9 is provided at the end of the crawler crane 21, which can effectively improve the accuracy of the steel pipe pile 34 and avoid deviation. The sleeve 9 provides additional support and guidance, so that the steel pipe pile 34 always maintains a stable vertical direction during the installation process, ensuring that the steel pipe pile 34 can be accurately positioned and reducing construction errors. At the same time, the provision of the sleeve 9 helps to improve the safety and construction efficiency during the installation process, avoid re-construction or positioning adjustment due to deviation, and further optimize the construction process.

[0049] In this embodiment, the qualitative steel pipe pile guide frame 7 is exquisitely designed, which can realize the precise positioning of the steel pipe pile 34, and quickly adjust the position of the qualitative steel pipe pile guide frame 7 according to the on-site conditions, reducing the time of repositioning, thereby improving the work efficiency. By adopting a multi-layer positioning plate 5, the verticality of the steel pipe pile 34 is ensured, and screws 50 and pressure plates 18 are equipped to ensure the stability of the structure and prevent overturning during construction. The set lifting jack 35 enables the qualitative steel pipe pile guide frame 7 to be raised and lowered quickly, further improving the construction efficiency. The invention ensures the efficiency and safety of the construction process by optimizing the positioning, adjustment and lifting functions.

[0050] Embodiment 2

[0051] As another embodiment, this embodiment 2 proposes, on the basis of embodiment 1, a more specific deep marine soft soil ultra-long steel pipe pile steel trestle construction system.

[0052] like Figure 3 As shown, the steel trestle includes a longitudinal support beam 27; a column 28 is provided at the bottom of the longitudinal support beam 27, a Bailey truss 29 is connected between the columns 28, and a longitudinal beam 33 is provided at the bottom of the column 28; a cross beam 32 is connected between the longitudinal beam 33 and the steel pipe pile 34, and a triangular limit piece 30 is symmetrically welded at the end of the cross beam 32, and a T-shaped limit piece 46 is welded at the center of the top of the cross beam 32; the triangular limit piece 30 is supported on the side of the outermost longitudinal beam 33, and the T-shaped limit piece 46 is pressed and fixed on the innermost longitudinal beam 33.

[0053] like Figure 7 As shown, anchor rods 43 are inserted into the top of the river bank 42, and dowel rods 44 are inserted into the side of the river bank 42; sockets 37 and slide grooves 25 are symmetrically provided on both sides of the top of the standardized angle steel slide rail 39, a socket 26 is provided in the center of the top of the standardized angle steel slide rail 39, and a side socket 40 is provided on the side of the standardized angle steel slide rail 39; the anchor rod 43 passes through the socket 37 and is fastened with a fixing nut 54, and the dowel rod 44 passes through the side socket 40 and is fastened with a nut 52; slide grooves 25 are symmetrically provided on both sides of the top of the panel rail 24, and a socket 26 is provided in the center of the top, and the panel rail 24 is connected to the slide groove 25 of the standardized angle steel slide rail 39.

[0054] like Fig.11As shown in the figure, the hanging safety operation platform is used for the transverse connection 31 welding between steel pipe piles 34, and it includes: cross beam 32, winch 38, steel wire rope 45, construction platform 55, ear plate 57, cantilever screw 62, pulley 64; the cantilever screw 62 sequentially passes through the steel pipe hole 48 on the side of the top of the steel pipe pile 34 and the steel pipe insertion hole 61 on the side of the cross beam 32, and then is fixed with a fastening bolt 63; the cross beam 32 is placed in the card slot 47 on the top of the steel pipe pile 34, and a pulley 64 is provided on the cantilever screw 62; after the steel wire rope 45 passes through the pulley 64, one end of it is connected to the ear plate 57 on the top of the construction platform 55, and the other end is connected to the winch 38 on the top of the construction platform 55.

[0055] In this embodiment, the Bailey beam combined limit member has a simple structure and is convenient for rapid construction; the T-shaped limit member 46 and the triangular limit member 30 can effectively control the up and down and horizontal movement of the Bailey beam, ensuring that the Bailey beam maintains precise positioning during the installation process. Through this limit device, the displacement of the Bailey beam during the construction process can be effectively prevented, ensuring its stability and safety, thereby further ensuring the stability of the overall structure of the steel trestle and improving the construction efficiency and construction quality.

[0056] In this embodiment, the hanging safety operation platform is designed simply and efficiently, and cleverly uses the already driven steel pipe piles 34 as the support structure, providing a stable working platform for the transverse connection 31 welding construction at different elevations. This hanging safety operation platform can be quickly installed and the height can be adjusted to ensure that workers can carry out welding operations in a safe and stable environment. By optimizing the design of the hanging safety operation platform, construction personnel can complete the transverse connection 31 welding more efficiently, greatly improving the construction efficiency, and at the same time reducing the time and resources wasted due to the construction of the hanging safety operation platform.

[0057] It should be noted that the same or similar parts in this embodiment and the first embodiment can be referred to each other, and will not be elaborated in this application.

[0058] Embodiment Three

[0059] As another embodiment, this Embodiment Three is proposed on the basis of Embodiment Two, and a construction method for a super-long steel pipe pile steel trestle in deep marine soft soil is as Figures 1 to 13 shown, and it includes the following steps:

[0060] Step 1: Fix the standardized angle steel slide rail 39 and the river embankment 42 and then assemble the standardized steel pipe pile guide frame 7 and install it on the standardized angle steel slide rail 39;

[0061] Step 2: Use the crawler crane 21 to insert the steel pipe pile 34 into the standardized steel pipe pile guide frame 7 and drive it into the deep marine soft soil to the designated position;

[0062] Step 3: hoist the hanging safety operation platform and weld the cross-joint 31 between the steel pipe piles 34;

[0063] Step 4: construct a steel trestle on the steel pipe piles 34 and lay the panel track 24 above the bridge deck;

[0064] Step 5: Slide the qualitative guide frame 7 and the crawler crane 21 forward along the panel track 24, continue to drive the steel pipe piles 34 and construct the steel trestle, and repeat steps 3 to 5 until the construction is completed.

[0065] In step 1, a customized angle steel slide rail 39, a sleeve 9 of a crawler crane 21, a customized steel pipe pile guide frame 7, a panel rail 24, and a hanging safety operation platform are customized in the factory; specifically, a socket 37 is provided on the top of the customized angle steel slide rail 39, a bolt socket 53 is drilled on the top of the mobile guide frame bottom plate 60 and a fixed sleeve 49 is welded, a reserved opening 8 is drilled on the top of the positioning plate 5, a slide plate 58 is welded on the bottom of the mobile guide frame bottom plate 60, a slide groove 25 and a socket 26 are provided on the top of the panel rail 24 and the customized angle steel slide rail 39, a card slot 47 and a steel pipe hole 48 are provided on the top of the steel pipe pile 34, and a construction platform 5 is provided. 5. Weld the ear plate 57 on the top; after measuring and staking out the position of the first section of the steel pipe pile 34 and the positions of the anchor rod 43 and the dowel 44, drill holes in the river bank 42 at the staking out positions of the anchor rod 43 and the dowel 44, then install the anchor rod 43 and the dowel 44, and then put the standardized angle steel slide rail 39 on the anchor rod 43 and the dowel 44, and then fix it with the nut 52 and the fixing nut 54; install the assembled standardized steel pipe pile guide frame 7 on the standardized angle steel slide rail 39, specifically, put the slide plate 58 on the slide groove 25, and then fix the movable guide frame bottom plate 60 on the standardized angle steel slide rail 39 with the screw rod 50 and the bolt 51.

[0066] It should be noted that the parts in this embodiment that are the same or similar to those in the second embodiment can be referenced to each other and will not be described in detail in this application.

[0067] Embodiment 4

[0068] As another embodiment, this embodiment 4 proposes, on the basis of the embodiment 3, a more specific construction method of an ultra-long steel pipe pile steel trestle in deep marine soft soil.

[0069] In step 2, if Figure 6 As shown, start the jack 35, adjust the lifting rod 36 to the specified height, then adjust the telescopic jack 65 to make the telescopic rod 56 reach the specified position, then fix the telescopic rod 56 and the fixed sleeve 49 with the pin 59, so that the pressure plate 18 is pressed on the center of the cross plate 19 to prevent overturning; install the sleeve 9 under the vertical rod 10 of the crawler crane 21, then insert the steel pipe pile 34 into the reserved opening 8 at the top of the positioning plate 5, then connect the sleeve 9 to the top of the steel pipe pile 34, and then insert and drive until it reaches the specified position.

[0070] In step three, if Fig.11 and Fig.12 As shown, a cross beam 32 is installed on the top of the first section of steel pipe piles 34, and then a cantilever screw 62 is installed on the top of the first section of steel pipe piles 34. Then a pulley 64 is installed on the cantilever screw 62. Then, a construction platform 55 is installed under the cantilever screw 62 using a steel wire rope 45 and a winch 38. Then, the winch 38 is started to lower the construction platform 55 to a suitable position, and then the cross-connection 31 between the steel pipe piles 34 is welded.

[0071] In step 4, if Figure 3 As shown, the suspended safety operating platform is removed, and then the longitudinal beam 33 is laid on the cross beam 32, and the Bailey truss 29 and the longitudinal support beam 27 are installed on the longitudinal beam 33. Then, the triangular limiters 30 are welded on both sides of the top of the cross beam 32 to limit the horizontal movement of the longitudinal beam 33, and the T-shaped limiter 46 is welded in the center of the top of the cross beam 32 to limit the up and down movement of the longitudinal beam 33; the panel track 24 is laid above the longitudinal support beam 27.

[0072] In step five, if Figure 1 As shown, loosen the bolt 51, slide the qualitative guide frame 7 to the next pile position, and then use the screw 50 and bolt 51 to fix the movable guide frame base plate 60 on the panel track 24; at the same time, start the crawler crane 21 to move it to the specified position; repeat steps 5-9 until the construction is completed.

[0073] It should be noted that the parts in this embodiment that are the same or similar to those in Embodiment 3 can be referenced to each other and will not be described in detail in this application.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

Claims

1. A deep marine soft soil ultra-long steel pipe pile steel trestle construction system, characterized in that: include: Standardized angle steel slide rails, crawler cranes, standardized steel pipe pile guide frames, steel pipe piles and hanging safety operation platforms; the standardized angle steel slide rails are fixed on the river bank; the steel pipe piles are supported under the steel trestle, and a panel track is provided on the deck of the steel trestle, the panel track is connected to the standardized angle steel slide rails, and the standardized steel pipe pile guide frame is fixed to the front end of the panel track of the constructed section of the steel trestle, and is used for guiding the steel pipe piles of the section to be constructed of the steel trestle; the crawler crane is located on the panel track, and is used for driving the steel pipe piles of the section to be constructed of the steel trestle; the hanging safety operation platform includes a cantilever screw, and the hanging safety operation platform is fixed to the side of the steel pipe pile by the cantilever screw; cross links are welded between the steel pipe piles.

2. The deep marine soft soil ultra-long steel pipe pile steel trestle construction system according to claim 1 is characterized in that: Anchor rods are inserted into the top of the river bank, and dowel bars are inserted into the sides of the river bank; sockets and slide grooves are symmetrically arranged on both sides of the top of the standardized angle steel slide rail, a socket is arranged in the center of the top of the standardized angle steel slide rail, and side sockets are arranged on the sides of the standardized angle steel slide rail; the anchor rods pass through the sockets and are fastened with fixing nuts, and the dowel bars pass through the side sockets and are fastened with nuts; slide grooves are symmetrically arranged on both sides of the top of the panel rail, and a socket is arranged in the center of the top, and the slide grooves of the panel rail and the standardized angle steel slide rail are connected.

3. The deep marine soft soil ultra-long steel pipe pile steel trestle construction system according to claim 1 is characterized by: The crawler crane comprises an operating device, a vertical rod and a supporting rod; the operating device is located at the top of the crawler crane, and the operating device is connected to a boom; a fixed sleeve is provided at the end of the boom; a sleeve is connected to one end of the supporting rod, and the other end is connected to the boom through a fixed sleeve; the vertical rod is connected to the supporting rod through the sleeve; a casing is connected to the bottom end of the vertical rod, and the casing is sleeved on the top of the steel pipe pile; rollers are provided at the bottom of the crawler crane, and crawlers are connected between the rollers; the crawler crane moves on the panel track through the crawlers.

4. The deep marine soft soil ultra-long steel pipe pile steel trestle construction system according to claim 1 is characterized by: The qualitative steel pipe pile guide frame includes a guide frame guide section and a guide frame fixed section; the guide frame guide section includes a positioning plate, several positioning plates are arranged vertically and are penetrated with a reserved opening, and the reserved opening is sleeved with a steel pipe pile; vertical connecting plates and fixed strips are fixed on both sides of the positioning plate, and a transverse connecting plate is fixed on the other side of the vertical connecting plate, the transverse connecting plate is connected to a cross bar, the cross bar is connected to a hanging plate, and the guide frame guide section is connected to the guide frame fixed section through the hanging plate; a movable guide frame bottom plate is provided at the bottom of the guide frame fixed section, and a plurality of bolt sockets are opened on the movable guide frame bottom plate, and slide plates are provided at both ends of the bottom of the movable guide frame bottom plate, and the slide plates are clamped in the slide groove of the qualitative angle steel slide rail or the panel track.

5. The deep marine soft soil ultra-long steel pipe pile steel trestle construction system according to claim 4 is characterized by: The guide frame fixed section of the qualitative steel pipe pile guide frame includes an oblique brace and a horizontal plate; the oblique brace and the horizontal plate are connected to the side of the suspension plate of the guide frame guide section, a jack and a lifting rod are connected between the horizontal plate and the bottom plate of the movable guide frame, and the lifting rod is welded to the bottom of the horizontal plate; a transverse plate is connected between the horizontal plates, and a pressure plate is set between the transverse plates; the bottom center of the pressure plate is sequentially connected with a telescopic jack and a telescopic rod, a telescopic rod reserved hole is horizontally penetrated through the lower part of the telescopic rod, a fixed sleeve is sleeved on the lower part of the telescopic rod, and a pin is fixed through the fixed sleeve and the telescopic rod reserved hole. The bolt socket is fixedly connected to the socket of the standardized angle steel slide rail or the socket of the panel track.

6. The deep marine soft soil ultra-long steel pipe pile steel trestle construction system according to claim 1 is characterized by: The suspended safety operation platform comprises a crossbeam, a construction platform and a cantilever screw rod; a slot is provided on the top of the steel pipe pile, and the crossbeam is fixed in the slot; the cantilever screw rod passes through the steel pipe pile and the crossbeam, and a pulley is sleeved on the outer part of the cantilever screw rod on the steel pipe pile; the pulley is connected to a steel wire rope, and an ear plate and a winch are provided on the top of the construction platform, and the steel wire rope connects the ear plate and the winch.

7. The ultra-long steel pipe pile steel trestle in deep marine soft soil according to claim 1 is characterized by: The steel trestle includes a longitudinal support beam; a column is provided at the bottom of the longitudinal support beam, a Bailey truss is connected between the columns, and a longitudinal beam is provided at the bottom of the column; a cross beam is connected between the longitudinal beam and the steel pipe pile, triangular limit pieces are symmetrically welded at the ends of the cross beam, and a T-shaped limit piece is welded at the center of the top of the cross beam; the triangular limit piece is supported on the side of the outermost longitudinal beam, and the T-shaped limit piece is pressed and fixed on the innermost longitudinal beam.

8. A construction method for an ultra-long steel pipe pile steel trestle in deep marine soft soil as claimed in claim 1, characterized in that: The following steps are involved: Step 1: After fixing the shaped angle steel slide rail and the river bank, assemble the shaped steel pipe pile guide frame and install it on the shaped angle steel slide rail; Step 2: Use a crawler crane to insert the steel pipe pile into the qualitative steel pipe pile guide frame and drive it into the deep marine soft soil to the designated position; Step 3: hoist the suspended safety operation platform and weld the cross-connections between the steel pipe piles; Step 4: construct the steel trestle on the steel pipe piles and lay the panel track above the bridge deck; Step 5: Slide the qualitative guide frame and crawler crane forward along the panel track, continue to drive steel pipe piles and construct the steel trestle, and repeat steps 3 to 5 until the construction is completed.

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