Span-by-span type bored pile construction method and construction platform

Abstract

The invention provides a span-by-span type bored pile construction method which comprises the following steps: S1, measuring and positioning, applying and driving a first row of steel casings, and constructing bored piles; s2, a steel casing accessory is installed on the steel casing, and the steel casing is connected with a main beam; s3, secondary beams are erected on the main beams; s4, beam upper panels are laid on the secondary beams, and a working platform is formed; s5, the construction equipment moves forwards in the laying direction of the working platform, and construction of the next row of steel casings is completed; and S6, the steps S2-S5 are repeated till all the drilled piles are constructed. According to the span-by-span type bored pile construction method and the construction platform, auxiliary piles and auxiliary platforms do not need to be additionally arranged, an overwater workboat does not need to be used either, the span-by-span type construction mode is adopted, the construction efficiency and convenience of overwater hole rotating piles are reserved, and fording bored pile construction which is difficult to enter a site and small in scale is facilitated; the prefabricated platform structure is adopted, building and dismantling are more convenient, different building requirements are met, and efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of bored pile construction, and in particular to a span-by-span bored pile construction method and a construction platform. Background Art

[0002] With the vigorous promotion of my country's infrastructure, the port and waterway industry has been vigorously developed, and port construction technology has become increasingly mature. In order to ensure the operation of the port, various types of buildings, such as bridges, will be constructed in the port, which makes the frequency of use of water bored piles in port projects higher.

[0003] In traditional construction, a fixed working platform is usually set up to assist the construction of bored piles on water. That is, the auxiliary working platform is first set up with the auxiliary piles as the foundation, and then the rotating piles are constructed with equipment, or the rotating piles are constructed directly on the water surface using a construction ship. In the process of bored pile construction, usually mechanical drilling is used first, and then concrete is injected to form the pile foundation. In water construction, steel casing is also required, and then the hole is bored and concrete is injected to form the pile foundation.

[0004] However, in the prior art, the work platform uses auxiliary piles as the foundation, and the bored pile steel casing is often injected after the construction is completed. The cost of erecting a large-area fixed platform is high, the construction operation is cumbersome, the work efficiency is low, and it is difficult to dismantle after the construction is completed. The construction cost of practical construction vessels is also high, and construction vessels are not suitable for small-scale wading bored pile construction that is difficult to access. Summary of the invention

[0005] The main purpose of the present invention is to provide a span-by-span bored pile construction method and a construction platform to solve the problems of high cost and low efficiency in existing overwater bored pile construction.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A span-by-span bored pile construction method comprises the following steps: S1. Measure and locate, inject the first row of steel casing, and construct bored piles; S2. Install the steel casing accessories on the steel casing and connect the main beam; S3. Build a secondary beam on the main beam; S4. Lay the upper beam panel on the secondary beam to form a working platform; S5. The construction equipment moves forward along the laying direction of the working platform to complete the next row of steel casing; S6. Repeat steps S2 to S5 until all bored piles are constructed.

[0007] In a preferred solution, the first row of steel casings is close to the shore, and the first row of steel casings is connected to the shore through a main beam, a secondary beam and a beam upper panel; Both the main beam and the secondary beam are made of I-beam or H-steel.

[0008] In the preferred solution, in S3 and S4, the secondary beams and the upper beam panels are modularly designed; the upper beam panels are connected in pairs in a movable manner and folded in half before installation, with the two upper beam panels located in the middle and the secondary beams located on both sides; during laying: S31, placing the modular secondary beam and the beam upper panel on the main beam; S32, adjust the position so that the upper panel of the beam is close to the edge of the installation position; S33, rotating the connected secondary beams and the upper beam panels to unfold the upper beam panels so that the secondary beams are all placed on the main beams; S34, placing another modular secondary beam and a beam upper panel on the main beam; S35, repeat S32-S34 until the laying is completed; The panel structure is quickly laid through the above steps; The connection structure between the upper panels of the beam is a hinge, chain, hinge or connecting belt.

[0009] A span-by-span bored pile construction platform includes accessories, wherein the accessories are used to connect a steel casing; A first main beam is provided between two adjacent steel casings, and the first main beam is connected to the accessories; A plurality of secondary beams are provided on top of the first main beam; A panel structure is provided on top of the secondary beam.

[0010] In a preferred solution, the secondary beam is a primary beam, a panel is provided on the top of the primary beam, and the panel structure is a panel; or The panel structure is a first cover plate and a second cover plate, and the secondary beams are a second beam and a third beam; A second main beam is provided in a direction perpendicular to the first main beam, and the second main beam is connected to the steel casing through accessories; Two first cover plates form a group, a plurality of connection blocks are hinged between the two first cover plates in the same group, and the first cover plates are connected to the secondary beams; Two second cover plates form a group, and a plurality of connecting blocks are hinged between the two second cover plates in the same group; one of the two second cover plates in the same group is connected to the secondary beam, and the other second cover plate is connected to the tertiary beam, and the tertiary beam connection is located at the top of the second main beam; The third beam is arranged perpendicularly to the second beam.

[0011] In the preferred solution, the accessories include a curved plate connected to the steel casing, the curved plate is provided with three auxiliary plates, and the auxiliary plates are connected to a straight plate; the first main beam and the second main beam are located on the top of the curved plate and the straight plate; the top surfaces of the curved plate and the straight plate are in the same plane.

[0012] The same attachment connects two first main beams or two second main beams; Top ends of the three auxiliary plates exceed the curved plate and the straight plate to form two installation grooves, and the first main beam is located inside the installation grooves.

[0013] In the preferred solution, two connecting sleeves are arranged outside the steel casing, the two connecting sleeves are arc-shaped, and the two connecting sleeves are arranged opposite to each other; connecting plates are arranged at both ends of the connecting sleeves, and a plurality of bolts are arranged between two connecting plates located in different connecting sleeves and adjacent to each other, the bolts pass through the two connecting plates, and the bolts are connected with nuts; The two connecting plates are combined to hold the steel casing tightly; The steel casing is provided with a plurality of positioning holes, and a positioning block is provided on the inner side of the connecting sleeve, and the positioning block is located in the positioning hole; The curved panel is connected to the connecting sleeve; Multiple accessories are connected to the same connecting sleeve.

[0014] In the preferred solution, a connection groove is provided at one corner of the panel, and the connection groove is in the shape of a quarter circle; a circular plate is provided at the top of the steel casing, and the circular plate is adapted to the connection groove; A plurality of connecting rods are arranged at the bottom of the panel, and the connecting rods are connected with positioning rods; the positioning rods are arc-shaped, and the positioning rods are close to the steel casing.

[0015] In a preferred solution, a partition is provided on the top of the attachment, and a plurality of positioning plates are provided on the top of the partition, and the positioning plates are located on the top of the first main beam; Positioning grooves are provided between the positioning plates, and the positioning grooves are used to position the secondary beams.

[0016] In a preferred solution, a support plate is provided at the bottom of the first main beam, a support rod is provided at the bottom of the support plate, and the support rod is connected to the guide plate via a hinge shaft; A fixing sleeve is provided on the outside of the steel casing, and a guide plate is located on the top of the fixing sleeve; The guide plate is located on top of the fixed sleeve; A plurality of plugging holes are arranged in the fixing sleeve, and a plugging column is arranged at the bottom of the guide plate, and the plugging column is matched with the plugging holes.

[0017] The present invention provides a span-by-span bored pile construction method and a construction platform. By adopting the above scheme, the following beneficial effects are achieved: 1. There is no need to set up auxiliary piles and auxiliary platforms, nor is there a need to use water construction ships. The bored piles are directly used as the foundation piles and a span-by-span construction method is adopted, which ensures the construction efficiency and convenience of the bored piles on the water.

[0018] 2. There is no need to use water construction equipment such as water construction ships. The construction can be completed using only shore construction equipment, which is lower in cost and more convenient to operate.

[0019] 3. It uses a simple structure to build, which makes the operation easier and does not require a large crane. A small crane can complete the operation, which is lower in cost.

[0020] 4. The use of prefabricated platform structure and construction method makes it more convenient to build and dismantle, and can adapt to different construction needs with higher efficiency.

[0021] 5. It is convenient for small-scale water-borne bored pile construction where access to the site is difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of a span-by-span bored pile construction platform of the present invention; Figure 2 It is a top view of a span-by-span bored pile construction platform of the present invention; Figure 3 It is a front view of a span-by-span bored pile construction platform of the present invention; Figure 4 is an enlarged structural schematic diagram of the accessory of the present invention; Figure 5 It is a schematic structural diagram of an embodiment of a span-by-span bored pile construction platform of the present invention; Figure 6 is an enlarged structural schematic diagram of the partition of the present invention; Figure 7 It is a schematic structural diagram of the connection between the circular plate and the panel of the present invention; Figure 8 It is a schematic structural diagram of an embodiment of a span-by-span bored pile construction platform of the present invention; Fig. 9 It is a schematic structural diagram of an embodiment of a span-by-span bored pile construction platform of the present invention; Fig.10 It is an enlarged structural schematic diagram of an embodiment of a span-by-span bored pile construction platform of the present invention; Fig.11 It is a schematic structural diagram of an embodiment of a span-by-span bored pile construction platform of the present invention; Fig.12 is a cross-sectional view of the guide plate of the present invention; Fig.13 It is a schematic diagram of the structure of the first cover plate and the second beam after folding of the present invention.

[0023] In the figure: Steel casing 1, accessory 2, curved panel 201, auxiliary plate 202, straight plate 203, connecting sleeve 211, positioning hole 212, positioning block 213, connecting plate 214, bolt 215, nut 216, first main beam 3, second main beam 31, partition 301, positioning plate 302, positioning groove 303, first primary beam 4, panel 5, circular plate 501, connecting groove 502, positioning rod 503, connecting rod 504, first cover plate 601, second secondary beam 602, connecting block 603, second cover plate 604, third tertiary beam 605, support plate 701, support rod 702, fixing sleeve 703, guide plate 704, hinge shaft 705, plug-in hole 706, plug-in column 707. DETAILED DESCRIPTION

[0024] Embodiment 1: A span-by-span bored pile construction method comprises the following steps: S1. Measure and locate to determine the location of the steel casing, then inject the first row of steel casing and construct bored piles; The steel casing was constructed using existing onshore construction equipment, and the bored pile construction was also carried out using onshore construction equipment; S2. Steel casing accessories are installed on the steel casing. The steel casing accessories can be connected to the outer wall of the steel casing and the main beam by welding. Both ends of the main beam are placed on the top of the steel casing accessories; S3. Build a secondary beam on the main beam; the secondary beam is at least located on the top of two main beams, and both ends of the secondary beam need to be supported by the main beam; A positioning structure may be provided on the main beam; the positioning structure may be a metal block welded to position the secondary beam, or a plurality of screw holes may be preset on the main beam and then connected with screws to position the secondary beam; There are gaps between adjacent secondary beams to accommodate structural deformation and adjustment needs during construction.

[0025] S4. The beam upper panels are laid on the secondary beam to form a working platform; the beam upper panels are all prefabricated steel plates, and the joints of the beam upper panels are in close contact; the beam upper panels can be infinitely combined in theory; The bottom surface of the upper beam panel is flat, or a plug-in block is provided, and the plug-in block is inserted into the gap between adjacent secondary beams to complete positioning and stability. S5. The construction equipment moves forward along the laying direction of the working platform to complete the next row of steel casing injection and bored pile construction; S6. Repeat steps S2 to S5 until all bored piles are constructed.

[0026] Through the above construction method, the present application can carry out span-by-span construction along the construction direction of bored piles without the need for auxiliary piles or construction ships, which greatly simplifies the construction operation process, significantly improves the construction efficiency, and greatly reduces the construction cost; In addition, the present application only uses the main beam and the secondary beam for assembly, and does not require the use of large support frames and lifting equipment, which further reduces costs and is more convenient during assembly and subsequent dismantling, and is convenient for small-scale wading bored pile construction with difficult access.

[0027] In the preferred scheme, since the supporting point of the present application is the steel casing, after the steel casing is injected, the connection of the main beam and the secondary beam can be carried out simultaneously with the construction of the bored piles, and a position for the steel casing is reserved when laying the upper panel of the beam. After the corresponding bored piles are completed, the upper panel of the beam on the steel casing is laid. The operation is simple and the construction efficiency is higher.

[0028] In the preferred scheme, the first row of steel casings is close to the shore, and the first row of steel casings is connected to the shore through main beams, secondary beams and beam upper panels; platforms or side guards and other structures are set up on the shore at the construction location according to existing methods. After the first main beam 3 is erected between the first row of steel casings, one end of the first main beam 3 can be directly placed on the casing accessories and the other end can be placed on the shore as needed. The shore is reinforced with concrete, and then secondary beams and beam upper panels are erected. A concrete slope is set at the connection between the beam upper panel and the shore to facilitate the passage of construction equipment.

[0029] Both the main beam and the secondary beam are made of I-beam or H-steel, which have a simple structure and high strength, and can effectively meet the load-bearing requirements during the construction process.

[0030] Embodiment 2: In S3 and S4, the secondary beams and the upper beam panels are modularly designed. The modular design is conducive to the rapid installation and disassembly of the panels, increases efficiency, and reduces construction difficulty. The upper beam panel referred to in this embodiment is rectangular, with a length not less than the length of the secondary beam and a width not less than the sum of the widths of the two secondary beams. There is a gap between adjacent secondary beams, and the upper beam panel can completely cover the connected secondary beams.

[0031] The secondary beam and the upper panel of the beam are fixedly connected, preferably by welding. The upper panels of the beams are connected in pairs in a movable manner and folded in half before installation. The two upper panels of the beams are located in the middle and the secondary beams are located on both sides. After folding in half, the occupied area during transportation and storage can be reduced, and it is also easier to lift and reduce the difficulty of construction. The connection structure between the upper panels of the beams is a hinge, chain, hinge or connecting belt, which is determined according to actual use requirements, and it is sufficient to ensure that the upper panels of the two beams can be folded normally; When laying: S31, placing the modular secondary beam and the upper beam panel on the main beam, and using the existing crane for lifting; S32, adjust the position so that the upper panel of the beam is close to the edge of the installation position; During adjustment, the non-folding side should be close to the edge, while the folding side should be away from the edge, so as to facilitate the subsequent flipping. The so-called non-folding side refers to the edge of the upper panel of the beam after unfolding, and the folding side refers to the side where the connecting structure is located; S33, rotating the connected secondary beams and the upper beam panels to unfold the upper beam panels so that the secondary beams are all placed on the main beams; Adjust the position, and now the installation of a set of modular secondary beams and beam upper panels is completed, which is simple to operate; S34, placing another modular secondary beam and a beam upper panel on the main beam; S35, repeat S32-S34 until the laying is completed; The panel structure is quickly laid through the above steps; Through modular installation, the efficiency is higher and the operation is more convenient, which increases the construction efficiency and reduces the construction difficulty; Moreover, the method of installing the secondary beam first and then the upper panel of the beam requires waiting for the upper panel of the beam to be installed after the secondary beam is installed. However, the modular installation method can be used immediately after installing a secondary beam and the upper panel of the beam. There is no need to wait until the secondary beam and the upper panel of the beam are fully installed before using it. There is a larger operating space and better adaptability.

[0032] Embodiment 3: like Figure 1 , 2 As shown in 3 , a span-by-span bored pile construction platform includes an accessory 2 , wherein the accessory 2 is used to connect a steel casing 1 ; A first main beam 3 is provided between two adjacent steel casings 1, and the first main beam 3 is connected to the attachment 2; A plurality of secondary beams are arranged on the top of the first main beam 3; the first main beam 3 and the secondary beams are both made of H-steel or I-steel structures, and the secondary beams provide a support frame for the laying of subsequent panel structures; A panel structure is provided on top of the secondary beam.

[0033] The present application connects the steel casing 1 through a simple structure and constructs a construction platform based on bored piles. It is no longer necessary to set up an auxiliary pile layout construction platform. Instead, span-by-span construction is more efficient and less costly. It also does not require the use of a construction ship, making it convenient for small-scale wading bored pile construction that is difficult to access.

[0034] In the preferred scheme, the secondary beam is the first beam 4, and a panel 5 is provided on the top of the first beam 4. The panel structure is panel 5. During construction, the first beam 4 is first placed on the top of the first main beam 3, and then the panel 5 is laid. The panel 5 is a large-area plate, which can effectively reduce the splicing gap, improve the integrity and stability of the working platform, and provide a more stable and reliable working surface for the operation of construction equipment and construction operations.

[0035] Embodiment 4: like Figure 5 and 7 As shown, a connection groove 502 is provided at one corner of the panel 5, and the connection groove 502 is a quarter circle; a circular plate 501 is provided at the top of the steel casing 1, and the circular plate 501 is adapted to the connection groove 502, and the diameter of the circular plate 501 is larger than the diameter of the steel casing 1; A plurality of connecting rods 504 are provided at the bottom of the panel 5 , and the connecting rods 504 are connected to positioning rods 503 ; the positioning rods 503 are arc-shaped, and the positioning rods 503 are closely attached to the steel casing 1 .

[0036] During installation, the panel 5 is installed first, and then the panel 5 is moved so that the positioning rod 503 is close to the steel casing 1, and the connecting rod 504 is close to the secondary beam. When the four panels 5 on the steel casing 1 are connected, a circular hole will be formed on the steel casing 1, and the circular plate 501 is placed in the circular hole. Therefore, when it is necessary to further construct bored piles in the steel casing 1, the circular plate 501 can be picked up for operation without affecting the panels 5 in other positions. This can meet the needs of constructing bored piles while connecting the panels, and the construction efficiency is higher, which is also convenient for the subsequent maintenance of the bored piles.

[0037] Embodiment 5: like Figure 8 , 9 , 10 and 13, the panel structure is a first cover plate 601 and a second cover plate 604, and the secondary beams are a second secondary beam 602 and a third tertiary beam 605; A second main beam 31 is provided in a direction perpendicular to the first main beam 3, and the second main beam 31 is connected to the steel casing 1 through an attachment 2; the second main beam 31 is an I-beam or H-steel structure; Two first cover plates 601 form a group. A plurality of connecting blocks 603 are hinged between the two first cover plates 601 in the same group. The first cover plates 601 are connected to the secondary beams 602. This is a prefabricated structure used for laying the panel of the middle section. When laying, it is initially in a folded state. First, the secondary beams 602 are placed on the first main beams 3, and then the first cover plates 601 are rotated to unfold the first cover plates 601. The secondary beams 602 are all located on the first main beams 3, forming a structure as shown in FIG. Figure 8 The status shown means the connection is successful, otherwise it can be disassembled; like Fig.13 It is in a folded state, and can be easily moved and transported after being folded.

[0038] Two second cover plates 604 form a group, and a plurality of connecting blocks 603 are hinged between the two second cover plates 604 in the same group; one of the two second cover plates 604 in the same group is connected to the secondary beam 602, and the other second cover plate 604 is connected to the tertiary beam 605, and the tertiary beam 605 is connected to the top of the second main beam 31; The third beam 605 is disposed perpendicular to the second beam 602 .

[0039] The second cover plate 604 is a prefabricated structure used near the bored pile 1. When laying, it is initially in a folded state. First, the secondary beam 602 is placed on the first main beam 3, and then the second cover plate 604 is rotated to drive the tertiary beam 605 to rotate until it is placed on the top of the second main beam 31. Figure 8 The connection is completed when the state is shown, otherwise it can be disassembled.

[0040] This embodiment adopts prefabricated panels and secondary beam structures, which are more convenient during disassembly and assembly. During construction, once a set of secondary beams and beam upper panel modules are completed, they can be used immediately without waiting for the secondary beams and beam upper panels to be fully installed before use. The operating space is larger, the adaptability is better, and it is also more convenient during disassembly.

[0041] Embodiment 6: like Figure 1 , 2 , 3, 4, 5, 7, 8, 9 and 10, this embodiment can be used in any of the above embodiments; specifically, the accessory 2 includes a curved panel 201 connected to the steel casing 1, and the curved panel 201 is welded to the steel casing 1; the curved panel 201 is provided with three auxiliary plates 202, which are connected by welding, and the auxiliary plates 202 are connected to the straight plates 203, which are connected by welding; the first main beam 3 and the second main beam 31 are located on the top of the curved panel 201 and the straight plate 203; the top surfaces of the curved panel 201 and the straight plate 203 are in the same plane, so as to facilitate the placement of the first main beam 3 and the second main beam 31.

[0042] The same attachment 2 connects two first main beams 3 or two second main beams 31 to ensure sufficient supporting beams; one or more may also be provided as required.

[0043] The top ends of the three auxiliary plates 202 extend beyond the curved plate 201 and the straight plate 203 to form two installation grooves. The first main beam 3 or the second main beam 31 is located inside the installation grooves. The installation grooves can not only locate the installation positions of the first main beam 3 and the second main beam 31, but also limit the first main beam 3 and the second main beam 31 to prevent the first main beam 3 and the second main beam 31 from shaking at will.

[0044] In a further preferred embodiment, since it is inconvenient to weld the curved panel 201 at high altitude after the construction of the steel casing 1 is completed, and the welding is prone to instability, the curved panel 201 is not directly connected to the steel casing 1. Specifically, two connecting sleeves 211 are provided outside the steel casing 1, and the two connecting sleeves 211 are arc-shaped and arranged opposite to each other; connecting plates 214 are provided at both ends of the connecting sleeve 211, and a plurality of bolts 215 are provided between two adjacent connecting plates 214 located in different connecting sleeves 211, and the bolts 215 pass through the two connecting plates 214, and the bolts 215 are connected with nuts 216; The two connecting plates 214 are combined to hold the steel casing 1 tightly; A plurality of positioning holes 212 are provided on the steel casing 1, and a positioning block 213 is provided on the inner side of the connecting sleeve 211, and the positioning block 213 is located in the positioning hole 212; Before the connecting plate 214 is connected to the steel casing 1, the curved plate 201 is first connected to the connecting sleeve 211. Preferably, the curved plate 201 is welded to the connecting sleeve 211. The same connecting sleeve 211 is connected to multiple accessories 2, and the specific number of accessories 2 is determined according to actual conditions and needs.

[0045] After the steel casing 1 is injected, the two connecting plates 214 are combined and sleeved on the outside of the steel casing 1, and the positioning block 213 is inserted into the inside of the positioning hole 212, and then the nut 216 is tightened so that the two connecting plates 214 are combined to tightly embrace the steel casing 1, and the fixation is completed, thereby completing the connection of the accessory 2. The operation is simple and the connection is convenient. Compared with the welding method of the accessory 2 and the steel casing 1, the method of this embodiment is simpler to operate, the connection is more secure, and it is more convenient for the user to connect the accessory 2.

[0046] Embodiment 7: like Figure 1 , 5 , 6, 8 and 10, this embodiment can be used in any of the above embodiments; a partition 301 is provided on the top of the attachment 2, and a plurality of positioning plates 302 are provided on the top of the partition 301, and the positioning plates 302 are located on the top of the first main beam 3; similarly, the positioning plates 302 can also be arranged on the top of the second main beam 31.

[0047] Positioning grooves 303 are provided between the positioning plates 302 , and the positioning grooves 303 are used to locate the placement position of the secondary beam. The spacing between the positioning plates 302 is determined according to actual needs.

[0048] Before connecting the secondary beam, the partition 301 can be placed first, and then the placement position of the secondary beam can be positioned by the positioning plate 302 above the partition 301, and then the secondary beam can be placed. The operation is simple, the positioning is convenient, and the stability of the placement of the secondary beam is ensured; As required, the height of the partition plate 301 may exceed the first main beam 3 to limit the end position of the secondary beam; or be equal to the first main beam 3, so as not to affect the placement of the secondary beam while positioning the secondary beam by the positioning plate 302; Embodiment 8: like Fig.11 and 12 As shown, at the same time, this embodiment can be used in any of the above embodiments; a support plate 701 is provided at the bottom of the first main beam 3, a support rod 702 is provided at the bottom of the support plate 701, and the support rod 702 is connected to a guide plate 704 through a hinge shaft 705; A fixing sleeve 703 is provided outside the steel casing 1, and a guide plate 704 is located on the top of the fixing sleeve 703; The guide plate 704 is located on the top of the fixing sleeve 703; A plurality of plug-in holes 706 are provided in the fixing sleeve 703 , and a plug-in column 707 is provided at the bottom of the guide plate 704 , and the plug-in column 707 is matched with the plug-in hole 706 .

[0049] Before connecting the first main beam 3, first put down the support plate 701, and the support plate 701 drives the support rod 702 and the guide plate 704 to move downward until the plug-in column 707 completely enters the plug-in hole 706, and then put the first main beam 3 (the second main beam 31 can be installed in the same way), and the installation is completed. The support plate 701 and the support rod 702 can provide certain support to the first main beam 3 and the second main beam 31, further increasing the stability; The top of the support plate 701 is grooved, and the groove is adapted to the first main beam 3 and the second main beam 31 .

[0050] As needed, the present application may also adopt other methods to reinforce and support the first main beam 3, such as setting a double-layer attachment 2 and the first main beam 3.

[0051] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A span-by-span bored pile construction method, characterized in that: The steps include: S1. Measure and locate, inject the first row of steel casing, and construct bored piles; S2. Install the steel casing accessories on the steel casing and connect the main beam; S3. Build a secondary beam on the main beam; S4. Lay the upper beam panel on the secondary beam to form a working platform; S5. The construction equipment moves forward along the laying direction of the working platform to complete the next row of steel casing; S6. Repeat steps S2 to S5 until all bored piles are constructed.

2. A span-by-span bored pile construction method according to claim 1, characterized in that: The first row of steel casings is close to the shore, and the first row of steel casings is connected to the shore through the main beam, the secondary beam and the upper panel of the beam; Both the main beam and the secondary beam are made of I-beam or H-steel.

3. A span-by-span bored pile construction method according to claim 1, characterized in that: In S3 and S4, the secondary beams and beam upper panels are modularly designed; the beam upper panels are connected in pairs in a movable manner and folded in half before installation, with the two beam upper panels located in the middle and the secondary beams located on both sides; during laying: S31, placing the modular secondary beam and the beam upper panel on the main beam; S32, adjust the position so that the upper panel of the beam is close to the edge of the installation position; S33, rotating the connected secondary beams and the upper beam panels to unfold the upper beam panels so that the secondary beams are all placed on the main beams; S34, placing another modular secondary beam and a beam upper panel on the main beam; S35, repeat S32-S34 until the laying is completed; The panel structure is quickly laid through the above steps; The connection structure between the upper panels of the beam is a hinge, chain, hinge or connecting belt.

4. A span-by-span bored pile construction platform, characterized by: The invention comprises an accessory (2), wherein the accessory (2) is used for connecting the steel casing (1); A first main beam (3) is provided between two adjacent steel casings (1), and the first main beam (3) is connected to the attachment (2); A plurality of secondary beams are provided on the top of the first main beam (3); A panel structure is provided on top of the secondary beam.

5. The span-by-span bored pile construction platform according to claim 4, characterized in that: The secondary beam is a first beam (4), a panel (5) is provided on the top of the first beam (4), and the panel structure is a panel (5); or The panel structure includes a first cover plate (601) and a second cover plate (604), and the secondary beams include a second secondary beam (602) and a third tertiary beam (605); A second main beam (31) is provided in a direction horizontally and vertically to the first main beam (3), and the second main beam (31) is connected to the steel casing (1) via an accessory (2); Two first cover plates (601) form a group, a plurality of connection blocks (603) are hinged between the two first cover plates (601) in the same group, and the first cover plates (601) are connected to the secondary beam (602); Two second cover plates (604) form a group, and a plurality of connection blocks (603) are hinged between the two second cover plates (604) in the same group; among the two second cover plates (604) in the same group, one second cover plate (604) is connected to the secondary beam (602), and the other second cover plate (604) is connected to the tertiary beam (605), and the tertiary beam (605) is connected to the top of the second main beam (31); The third beam (605) is arranged perpendicularly to the second beam (602).

6. The step-by-step bored pile construction platform according to claim 5 is characterized by: The accessory (2) comprises a curved panel (201) connected to the steel casing (1); the curved panel (201) is provided with three auxiliary panels (202); the auxiliary panels (202) are connected to straight panels (203); the first main beam (3) and the second main beam (31) are located on the top of the curved panel (201) and the straight panels (203); the top surfaces of the curved panel (201) and the straight panels (203) are in the same plane; The same attachment (2) connects two first main beams (3) or two second main beams (31); The top ends of the three auxiliary plates (202) extend beyond the curved plate (201) and the straight plate (203) to form two installation grooves, and the first main beam (3) is located inside the installation grooves.

7. The span-by-span bored pile construction platform according to claim 6 is characterized by: Two connecting sleeves (211) are provided outside the steel casing (1), the two connecting sleeves (211) are arc-shaped, and the two connecting sleeves (211) are arranged opposite to each other; connecting plates (214) are provided at both ends of the connecting sleeves (211), and a plurality of bolts (215) are provided between two adjacent connecting plates (214) located in different connecting sleeves (211), the bolts (215) pass through the two connecting plates (214), and nuts (216) are connected to the bolts (215); The two connecting plates (214) are combined to hold the steel casing (1); A plurality of positioning holes (212) are provided on the steel casing (1), a positioning block (213) is provided on the inner side of the connecting sleeve (211), and the positioning block (213) is located in the positioning hole (212); The curved panel (201) is connected to the connecting sleeve (211); The same connecting sleeve (211) is connected to a plurality of accessories (2).

8. The step-by-step bored pile construction platform according to claim 5 is characterized by: A connecting groove (502) is provided at one corner of the panel (5), and the connecting groove (502) is in the shape of a quarter circle; a circular plate (501) is provided at the top of the steel casing (1), and the circular plate (501) is adapted to the connecting groove (502); A plurality of connecting rods (504) are provided at the bottom of the panel (5), and the connecting rods (504) are connected to positioning rods (503); the positioning rods (503) are arc-shaped, and the positioning rods (503) are closely attached to the steel casing (1).

9. A span-by-span bored pile construction platform according to any one of claims 4 to 8, characterized in that: A partition plate (301) is provided on the top of the attachment (2), a plurality of positioning plates (302) are provided on the top of the partition plate (301), and the positioning plates (302) are located on the top of the first main beam (3); Positioning grooves (303) are provided between the positioning plates (302), and the positioning grooves (303) are used to locate the placement position of the secondary beam.

10. The span-by-span bored pile construction platform according to claim 9, characterized in that: A support plate (701) is provided at the bottom of the first main beam (3), a support rod (702) is provided at the bottom of the support plate (701), and the support rod (702) is connected to a guide plate (704) via a hinge shaft (705); A fixing sleeve (703) is provided outside the steel casing (1), and a guide plate (704) is located on the top of the fixing sleeve (703); The guide plate (704) is located on the top of the fixing sleeve (703); A plurality of plugging holes (706) are provided in the fixing sleeve (703), and a plugging column (707) is provided at the bottom of the guide plate (704), wherein the plugging column (707) is matched with the plugging hole (706).

Images