Auxiliary connector for connecting steel pipe piles and cofferdams and construction method for steel pipe pile retaining wall

Abstract

The present invention relates to an auxiliary connector for connecting a steel pipe pile and a waling and a construction method for a steel pipe pile retaining wall, belonging to the technical field of steel pipe pile retaining wall construction. The auxiliary connector for connecting the steel pipe pile and the waling includes a suspension beam and two relatively arranged waling connectors; the suspension beam is connected between fixed objects on both sides of the to-be-constructed steel pipe pile retaining wall, and its installation height is higher than the designed top elevation of the to-be-constructed steel pipe pile retaining wall so as to span above the to-be-constructed steel pipe pile retaining wall; the two waling connectors are respectively located on both sides of the to-be-constructed steel pipe pile retaining wall, the upper ends of the waling connectors are connected to the suspension beam, and the lower ends are used for connecting the waling; the lower ends of the two waling connectors are respectively used for connecting two relatively arranged walings, and a spacing is left between the lower ends of the two waling connectors. The auxiliary connector for connecting the steel pipe pile and the waling can realize the underwater quick connection between the steel pipe pile and the waling and is applicable to the construction of a steel pipe pile retaining wall with a designed top elevation near the sea level.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel pipe pile retaining wall construction, and particularly relates to an auxiliary connector for connecting a steel pipe pile and a waling and a construction method of a steel pipe pile retaining wall. Background Art

[0002] In some offshore construction projects, it is sometimes necessary to build a steel pipe pile retaining wall to ensure the safety of offshore construction. At present, the conventional construction process of a steel pipe pile retaining wall is as follows: guiding and positioning with a pile driving guide frame erected in the sea, driving steel pipe piles one by one. When driving the steel pipe piles, the steel pipe piles are arranged in a row to form a retaining wall. After the steel pipe piles are driven, a waling is welded to the row of steel pipe piles to connect the row of steel pipe piles into a whole, so as to play a supporting role and ensure the construction safety. Among them, the welding of the waling and the steel pipe pile needs to be carried out in a dry operation environment. When the designed top elevation of the steel pipe pile retaining wall is near the sea level, the time for the steel pipe pile to expose above the water surface is extremely short, and it is difficult to quickly complete the connection between the steel pipe pile and the waling within a limited time. Therefore, how to achieve the underwater rapid connection between the steel pipe pile and the waling is a technical problem that needs to be solved urgently at present. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides an auxiliary connector for connecting a steel pipe pile and a waling and a construction method of a steel pipe pile retaining wall. The auxiliary connector for connecting a steel pipe pile and a waling can achieve the underwater rapid connection between the steel pipe pile and the waling and is applicable to building a steel pipe pile retaining wall with a designed top elevation near the sea level.

[0004] The present invention provides an auxiliary connector for connecting a steel pipe pile and a waling, including:

[0005] A suspension beam, which is connected between fixed objects on both sides of the to-be-built steel pipe pile retaining wall, and its installation height is higher than the designed top elevation of the to-be-built steel pipe pile retaining wall so as to span above the to-be-built steel pipe pile retaining wall;

[0006] Two relatively arranged waling connectors, which are respectively located on both sides of the to-be-built steel pipe pile retaining wall. The upper ends of the waling connectors are connected to the suspension beam, and the lower ends are used for connecting the waling; the vertical distance between the lower ends of the waling connectors and the suspension beam is greater than the difference between the installation height of the suspension beam and the designed top elevation of the to-be-built steel pipe pile retaining wall; the lower ends of the two waling connectors are respectively used for connecting two relatively arranged walings, and there is a spacing between the lower ends of the two waling connectors. The spacing between the two waling connectors meets the following conditions: after connecting two walings to the lower ends of the two waling connectors respectively, the spacing between the two walings is equal to the outer diameter of the steel pipe pile used to build the to-be-built steel pipe pile retaining wall.

[0007] In some embodiments, a welding surface for connecting the waling is formed on the side of the lower end of the waling connector facing the to-be-built steel pipe pile retaining wall.

[0008] In some of these embodiments, the cofferdam connectors include vertical connectors and diagonal connectors; the vertical connectors are arranged vertically, with their upper ends connected to the suspension beams and their lower ends for connecting to the cofferdams; the diagonal connectors are connected between the lower ends of the vertical connectors and the suspension beams, and the diagonal connectors, vertical connectors, and suspension beams enclose a triangle; in the auxiliary connector, the vertical connectors of the two cofferdam connectors are arranged close to each other, and the diagonal connectors are arranged away from each other.

[0009] In some of these embodiments, the cofferdam connectors further include diagonal reinforcement connectors connected between the middle parts of the vertical connectors and the cofferdams, and the vertical connectors, diagonal reinforcement connectors, and cofferdams enclose a triangle.

[0010] In some of these embodiments, the auxiliary connector further includes a cross brace connected between the two cofferdam connectors, and the cross brace is arranged close to the lower ends of the cofferdam connectors.

[0011] In addition, the present invention also provides a construction method for a steel pipe pile retaining wall, which uses the auxiliary connector for connecting the steel pipe piles and the cofferdams described in any one of the above technical solutions for construction, including the following steps:

[0012] Determine the installation positions of the auxiliary connectors: In the construction direction of the steel pipe pile retaining wall to be built, determine the installation positions for at least two auxiliary connectors; when determining the installation positions, select the fixtures for installing the auxiliary connectors according to the relative position relationship of the existing fixtures on both sides of the steel pipe pile retaining wall to be built, so as to determine the installation positions of the auxiliary connectors;

[0013] Connect the cofferdams and the auxiliary connectors: According to the relative position relationship between the determined installation positions of the multiple auxiliary connectors and the construction positions of the steel pipe pile retaining wall to be built, connect the multiple auxiliary connectors to the corresponding positions of a pair of cofferdams used for building the steel pipe pile retaining wall to be built; when connecting, among the multiple auxiliary connectors, the cofferdam connectors on the same side of the steel pipe pile retaining wall to be built are connected to the same cofferdam;

[0014] Fix the auxiliary connectors: Install each auxiliary connector at its installation position so that the connected cofferdams are suspended at the construction position of the steel pipe pile retaining wall to be built;

[0015] Drive the steel pipe piles: Loft the pile positions of the steel pipe piles in the space between a pair of cofferdams connected by the auxiliary connectors, and vibrate and sink the steel pipe piles at the lofted pile positions;

[0016] Connect the steel pipe piles and the cofferdams: Pass the tie rods through between two adjacent steel pipe piles, and use the tie rods to tightly connect a pair of cofferdams located on both sides of the steel pipe piles, so as to clamp the steel pipe piles with a pair of cofferdams and complete the connection between the cofferdams and the steel pipe piles.

[0017] In some of these embodiments, in the step of determining the installation positions of the auxiliary connectors, the installation positions of the multiple auxiliary connectors are distributed at intervals in the construction direction of the steel pipe pile retaining wall to be constructed.

[0018] In some of these embodiments, in the step of driving the steel pipe piles, when the pile position of the steel pipe pile to be driven is directly below the suspension beam of the auxiliary connector, the part of the suspension beam of the auxiliary connector located between the two waling connectors is cut off.

[0019] In some of these embodiments, in the step of driving the steel pipe piles, the specific steps of vibrating and sinking the steel pipe piles are as follows: install a pile sinking guide frame at the pile position obtained by lofting, lift and place the steel pipe pile to be driven into the pile sinking guide frame, use the pile sinking guide frame to control the sinking direction of the steel pipe pile, and use a vibrating hammer to vibrate and sink the steel pipe pile.

[0020] In some of these embodiments, the waling includes two parallel and vertically opposite waling beams, and connecting plates for connecting the two waling beams; both ends of the connecting plates are respectively connected to the two waling beams, there are multiple connecting plates, and the multiple connecting plates are arranged at intervals along the extending direction of the waling; a space is reserved between the two waling beams for the tie rods to pass through; in the step of connecting the steel pipe piles and the waling, the tie rods pass through between the two waling beams of the waling, and by threadedly connecting fastening nuts at both ends of the tie rods and making the fastening nuts abut against the two waling beams, the fastening connection of the waling on both sides of the steel pipe pile is completed.

[0021] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0022] 1. For the auxiliary connector for connecting the steel pipe piles and the waling provided by the present invention, its suspension beam is installed between the fixed objects on both sides of the steel pipe pile retaining wall to be constructed, and the two opposite waling connectors below the suspension beam connect the two opposite waling, so that the waling is suspended at the construction position of the steel pipe pile retaining wall to be constructed. Therefore, when the designed top elevation of the steel pipe pile retaining wall to be constructed is near the sea level, through the suspension connection of the auxiliary connector for connecting the steel pipe piles and the waling, the waling can extend into the water. Then, drive the steel pipe piles between the two suspended waling, and clamp the steel pipe piles by the two waling suspended by the auxiliary connector, and the underwater rapid connection between the steel pipe piles and the waling can be quickly realized, and it can be applied to the construction of steel pipe pile retaining walls with a designed top elevation near the sea level;

[0023] 2. For the auxiliary connector for connecting the steel pipe piles and the waling provided by the present invention, the two opposite waling are connected by the two waling connectors. Therefore, during the process of driving the steel pipe piles, the sinking direction of the steel pipe piles can be restricted by the two waling. When used in cooperation with the pile sinking guide frame, the verticality of the steel pipe piles can be controlled, and the construction accuracy and construction efficiency of the steel pipe pile sinking can be improved;

[0024] 3. The auxiliary connector for connecting a steel pipe pile and a waling provided by the present invention has a simple structure and low manufacturing cost. Its popularization and application in the construction of a steel pipe pile retaining wall can achieve good economic benefits.

[0025] 4. For the construction method of a steel pipe pile retaining wall provided by the present invention, first, use the auxiliary connector for connecting a steel pipe pile and a waling to suspend the waling at the construction position of the to-be-built steel pipe pile retaining wall. Then, drive steel pipe piles in the space between the two suspended walings. After the steel pipe piles are driven, use tie rods to tightly connect the two walings, so that the two walings can clamp the steel pipe piles, completing the rapid connection between the steel pipe piles and the walings. Among them, when the designed top elevation of the to-be-built steel pipe pile retaining wall is near the sea level, the waling can extend into the water through the hanging connection of the auxiliary connector, and the tie rods are connected underwater, thus realizing the rapid underwater connection between the steel pipe piles and the walings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0027] Figure 1 is the front view of the auxiliary connector for connecting a steel pipe pile and a waling provided by an embodiment of the present invention in a state of being connected to the waling and a fixed object;

[0028] Figure 2 is the side view of the auxiliary connector for connecting a steel pipe pile and a waling provided by an embodiment of the present invention in a state of being connected to the waling;

[0029] Figure 3 is the flow chart of the construction method of a steel pipe pile retaining wall provided by an embodiment of the present invention;

[0030] Figure 4 is the top view of the construction method of a steel pipe pile retaining wall provided by an embodiment of the present invention after the auxiliary connector is installed in place;

[0031] Figure 5 is the top view of the construction method of a steel pipe pile retaining wall provided by an embodiment of the present invention after the steel pipe piles are driven;

[0032] Figure 6 is the top view of the construction method of a steel pipe pile retaining wall provided by an embodiment of the present invention using tie rods to connect the walings on both sides of the steel pipe pile;

[0033] Figure 7 is the side view of the construction method of a steel pipe pile retaining wall provided by an embodiment of the present invention using tie rods to connect the walings on both sides of the steel pipe pile.

[0034] In the figures:

[0035] 1. Auxiliary connector; 2. Steel pipe pile retaining wall; 3. Fixing object;

[0036] 11. Suspension beam; 12. Cofferdam connector; 121. Vertical connector; 122. Diagonal connector; 123. Diagonal reinforcement connector; 13. Cross brace;

[0037] 21. Cofferdam; 211. Cofferdam beam; 212. Connecting plate; 22. Steel pipe pile; 23. Tie rod; 24. Fastening nut. Specific implementation manner

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] As shown in the atta Figure 1 - Figure 2As shown, in a schematic embodiment of the auxiliary connector 1 for connecting a steel pipe pile and a waling in the present invention, the auxiliary connector 1 for connecting a steel pipe pile and a waling includes a suspension beam 11 and two relatively arranged waling connectors 12; the suspension beam 11 is connected between fixtures 3 on both sides of the steel pipe pile retaining wall 2 to be constructed, and its installation height is higher than the designed top elevation of the steel pipe pile retaining wall 2 to be constructed, so as to span above the steel pipe pile retaining wall 2 to be constructed; the two waling connectors 12 are respectively located on both sides of the steel pipe pile retaining wall 2 to be constructed, the upper end of the waling connector 12 is connected to the suspension beam 11, and the lower end is used for connecting the waling 21; the vertical distance between the lower end of the waling connector 12 and the suspension beam 11 is greater than the difference between the installation height of the suspension beam 11 and the designed top elevation of the steel pipe pile retaining wall 2 to be constructed; the lower ends of the two waling connectors 12 are respectively used for connecting two relatively arranged walings 21, and there is a spacing between the lower ends of the two waling connectors 12, and the spacing between the two waling connectors 12 satisfies the following condition: after connecting two walings 21 to the lower ends of the two waling connectors 12 respectively, the spacing between the two walings 21 is equal to the outer diameter of the steel pipe pile 22 used for constructing the steel pipe pile retaining wall 2 to be constructed.

[0042] For the above-mentioned auxiliary connector 1 for connecting a steel pipe pile and a waling, its suspension beam 11 is installed between fixtures 3 on both sides of the steel pipe pile retaining wall 2 to be constructed, and two relatively arranged waling connectors 12 under the suspension beam 11 are used to connect two opposite walings 21, so that the waling 21 is suspended at the construction position of the steel pipe pile retaining wall 2 to be constructed. Therefore, when the designed top elevation of the steel pipe pile retaining wall 2 to be constructed is near the sea level, through the suspension connection of the auxiliary connector 1 for connecting a steel pipe pile and a waling, the waling 21 can extend into the water, and then the steel pipe pile 22 is driven between the two suspended walings 21, and the two walings 21 connected by the auxiliary connector 1 clamp the steel pipe pile 22, so that the underwater rapid connection between the steel pipe pile 22 and the waling 21 can be quickly realized, and it can be applied to the construction of the steel pipe pile retaining wall 2 with a designed top elevation near the sea level. Moreover, for the above-mentioned auxiliary connector 1 for connecting a steel pipe pile and a waling, two opposite walings 21 are connected by two waling connectors 12. Thus, during the driving process of the steel pipe pile 22, the driving direction of the steel pipe pile 22 can be restricted by the two walings 21, and when used in cooperation with a pile driving guide frame, the verticality of the steel pipe pile 22 can be controlled, and the pile driving construction accuracy and construction efficiency of the steel pipe pile 22 can be improved. In addition, the above-mentioned auxiliary connector 1 for connecting a steel pipe pile and a waling has a simple structure and low manufacturing cost, and its popularization and application in the construction of the steel pipe pile retaining wall 2 can achieve good economic benefits.

[0043] As Figure 1 shown, a welding surface for connecting the waling 21 is formed on the side of the lower end face of the waling connector 12 facing the steel pipe pile retaining wall 2 to be constructed. By providing the welding surface, the waling 21 can be connected by welding, which is convenient for the connection between the auxiliary connector 1 and the waling 21.

[0044] As Figure 1 shown, the cofferdam connector 12 includes a vertical connector 121 and an inclined connector 122; the vertical connector 121 is arranged vertically, its upper end is connected to the suspension beam 11, and its lower end is used to connect to the cofferdam 21; the inclined connector 122 is connected between the lower end of the vertical connector 121 and the suspension beam 11, and the inclined connector 122, the vertical connector 121 and the suspension beam 11 enclose a triangle; in the auxiliary connector, the vertical connectors 121 of the two cofferdam connectors 12 are arranged close to each other, and the inclined connectors 122 are arranged away from each other. In this cofferdam connector 12, the vertical connector 121 plays a role in connecting the cofferdam 21, and the inclined connector 122 can strengthen the connection strength between the vertical connector 121 and the suspension beam 11, with high structural stability. Moreover, this cofferdam connector 12 has a simple structure, is easy to manufacture, and has a low manufacturing cost. It should be noted that in this embodiment, the suspension beam 11, the vertical connector 121 and the inclined connector 122 can all be made of steel pipes, and the three can be connected by welding.

[0045] Furthermore, as Figure 2 shown, the cofferdam connector 12 further includes an inclined reinforcement connector 123 connected between the middle of the vertical connector 121 and the cofferdam 21, and the vertical connector 121, the inclined reinforcement connector 123 and the cofferdam 21 enclose a triangle. In this embodiment, by providing the inclined reinforcement connector 123, the connection between the cofferdam 21 and the auxiliary connector 1 can be ensured to be firm. Preferably, there are two inclined reinforcement connectors 123, and the two inclined reinforcement connectors 123 are symmetrically arranged with respect to the vertical connector 121, so as to strengthen the connection with the cofferdam 21 on both sides of the connection point between the vertical connector 121 and the cofferdam 21.

[0046] In addition, as Figure 1 shown, the auxiliary connector 1 further includes a cross brace 13 connected between the two cofferdam connectors 12, and the cross brace 13 is arranged close to the lower end of the cofferdam connector 12. By providing the cross brace 13, it can support the lower ends of the two cofferdam connectors 12, ensure that the distance between the lower ends of the two cofferdam connectors 12 remains unchanged, prevent the cofferdam connector 12 from deforming, and thus ensure that the distance between the two cofferdams 21 connected by the two cofferdam connectors 12 remains unchanged. Specifically, in this embodiment, the cross brace 13 is connected between the vertical connectors 121 of the two cofferdam connectors 12.

[0047] As Figure 3 - Figure 7 shown, based on the above-mentioned auxiliary connector 1 for connecting steel pipe piles and cofferdams, the present invention also provides a construction method for a steel pipe pile retaining wall. Using the above-mentioned auxiliary connector 1 for connecting steel pipe piles and cofferdams for construction, it includes the following steps:

[0048] S1 Determine the installation positions of the auxiliary connectors: In the construction direction of the steel pipe pile retaining wall 2 to be constructed, determine the installation positions for at least two auxiliary connectors 1; when determining the installation positions, select the fixture 3 for installing the auxiliary connector 1 according to the relative position relationship of the existing fixtures 3 on both sides of the steel pipe pile retaining wall 2 to be constructed, so as to determine the installation positions of the auxiliary connectors 1; in this step, it should be noted that in order to construct the steel pipe pile retaining wall 2, a construction platform is usually pre-built. Therefore, the pile foundation of the construction platform built on both sides of the steel pipe pile retaining wall 2 to be constructed can be selected as the fixture 3 for installing the auxiliary connector 1; it should also be noted that the suspension beam 11 of the auxiliary connector 1 can be installed perpendicular to the construction direction of the steel pipe pile retaining wall 2 to be constructed, or can be installed obliquely relative to the construction direction of the steel pipe pile retaining wall 2 to be constructed. Therefore, when selecting the fixture 3 for installing the auxiliary connector 1, as long as the fixture 3 is on both sides of the steel pipe pile retaining wall 2 to be constructed and is relatively close.

[0049] S2 Connect the waling and the auxiliary connectors: According to the relative position relationship between the installation positions of the determined multiple auxiliary connectors 1 and the construction position of the steel pipe pile retaining wall 2 to be constructed, connect the multiple auxiliary connectors 1 to the corresponding positions of a pair of walings 21 used for constructing the steel pipe pile retaining wall 2 to be constructed; when connecting, among the multiple auxiliary connectors 1, the waling connectors 12 on the same side of the steel pipe pile retaining wall 2 to be constructed are connected to the same waling 21; in this step, according to the relative position relationship between the installation position of the auxiliary connector 1 and the construction position of the steel pipe pile retaining wall 2 to be constructed, the connection points of each auxiliary connector 1 and the waling 21 can be determined, so as to ensure that after the waling 21 is connected to each auxiliary connector 1, the auxiliary connector 1 can be installed according to the installation position determined in step S1; it should be noted that when the length of the steel pipe pile retaining wall 2 is relatively long, the waling 21 can be divided into multiple sections, and at least two auxiliary connectors 1 are correspondingly connected to each section of the waling 21.

[0050] S3 Fix the auxiliary connectors: Install each auxiliary connector 1 at its installation position so that the connected waling 21 is suspended at the construction position of the steel pipe pile retaining wall 2 to be constructed; in this step, it should be noted that the method of installing the auxiliary connector 1 at its installation position is specifically: fix the two ends of the suspension beam 11 of the auxiliary connector 1 to the two fixtures 3 correspondingly selected for this auxiliary connector 1 respectively, so that the connected waling 21 is located at a position below the designed top elevation of the steel pipe pile retaining wall 2 to be constructed; it should also be noted that when the designed top elevation of the steel pipe pile retaining wall 2 to be constructed is underwater, when the waling 21 is suspended by the auxiliary connector 1, the waling 21 can be extended into the water; in addition, it should also be noted that the connection between the suspension beam 11 and the fixture 3 can be made by welding, or other connection methods such as bolt connection.

[0051] S4 Driving steel pipe piles: Loft the pile positions of the steel pipe piles 22 in the space between a pair of waling beams 21 connected by the auxiliary connector 1, and vibrate and sink the steel pipe piles 22 at the lofted pile positions; in this step, it should be noted that after the steel pipe piles 22 are vibrated and sunk, medium-coarse sand needs to be poured into the steel pipe piles 22 to the mud surface inside the piles, then concrete is poured from the mud surface to the designed top elevation of the steel pipe pile retaining wall 2, and then the pile heads exceeding the designed top elevation are cut off;

[0052] S5 Connecting the steel pipe piles and the waling beams: Pass the tie rods 23 through the space between two adjacent steel pipe piles 22, and use the tie rods 23 to tightly connect a pair of waling beams 21 located on both sides of the steel pipe piles 22, so as to clamp the steel pipe piles 22 with a pair of waling beams 21 and complete the connection between the waling beams 21 and the steel pipe piles 22; in this step, it should be noted that the connection of the tie rods 23 can be carried out underwater without a dry operation environment.

[0053] For the above construction method of the steel pipe pile retaining wall, first use the auxiliary connector 1 for connecting the steel pipe piles and the waling beams to suspend the waling beams 21 at the construction position of the to-be-built steel pipe pile retaining wall 2, then drive the steel pipe piles 22 in the space between the two suspended waling beams 21. After the steel pipe piles 22 are driven, the two waling beams 21 are tightly connected by the tie rods 23, so that the two waling beams 21 can clamp the steel pipe piles 22 to complete the rapid connection between the steel pipe piles 22 and the waling beams 21. Among them, when the designed top elevation of the to-be-built steel pipe pile retaining wall 2 is near the sea level, the waling beams 21 can extend into the water through the suspension connection of the auxiliary connector 1, and the connection of the tie rods 23 is carried out underwater, so as to realize the rapid underwater connection between the steel pipe piles 22 and the waling beams 21.

[0054] In some embodiments, as Figure 4 shown, in the step S1 of determining the installation positions of the auxiliary connectors, the installation positions of multiple auxiliary connectors 1 are distributed at intervals in the construction direction of the to-be-built steel pipe pile retaining wall 2.

[0055] In some embodiments, as Figure 5 shown, in the step S4 of driving the steel pipe piles, when the pile position of the to-be-driven steel pipe pile 22 is directly below the suspension beam 11 of the auxiliary connector 1, the part of the suspension beam 11 of the auxiliary connector 1 located between the two waling connectors 12 is cut off to avoid affecting the construction of the steel pipe piles 22.

[0056] In some of these embodiments, in the step S4 of driving steel pipe piles, the specific steps of vibrating and sinking the steel pipe piles 22 are as follows: Install a pile sinking guide frame at the pile position obtained by lofting, lift the steel pipe pile 22 to be driven into the pile sinking guide frame, use the pile sinking guide frame to control the sinking direction of the steel pipe pile 22, and use a vibratory hammer to vibrate and sink the steel pipe pile 22. During the process of driving the steel pipe pile 22, the sinking direction of the steel pipe pile 22 is restricted by two waling beams 21 connected by an auxiliary connector 1. In cooperation with the pile sinking guide frame, the verticality of the steel pipe pile 22 can be controlled, and the construction accuracy and efficiency of driving the steel pipe pile 22 can be improved.

[0057] In some of these embodiments, as Figure 6 and Figure 7 shown, the waling beam 21 includes two parallel and vertically opposite waling beams 211, and a connecting plate 212 for connecting the two waling beams 211; both ends of the connecting plate 212 are respectively connected to the two waling beams 211, and there are multiple connecting plates 212, which are arranged at intervals along the extending direction of the waling beam 21; a space is reserved between the two waling beams 211 for the tie rod 23 to pass through; in the step S5 of connecting the steel pipe pile and the waling beam, the tie rod 23 passes through between the two waling beams 211 of the waling beam 21, and fastening nuts 24 are threadedly connected to both ends of the tie rod 23, and the fastening nuts 24 are abutted against the two waling beams 211 to complete the fastening connection of the waling beams 21 on both sides of the steel pipe pile 22. The waling beam 21 with the above structure adopted in this embodiment facilitates the quick connection of the two waling beams 21 underwater through the tie rod 23.

[0058] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and the key points of each embodiment are the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. An auxiliary connector for connecting a steel pipe pile and a waling, characterized in that, Comprising: A suspension beam, which is connected between fixtures located on both sides of the steel pipe pile retaining wall to be constructed, and its installation height is higher than the designed top elevation of the steel pipe pile retaining wall to be constructed, so as to span above the steel pipe pile retaining wall to be constructed; Two opposite waling connectors, the two waling connectors are respectively located on both sides of the steel pipe pile retaining wall to be constructed, the upper end of the waling connector is connected to the suspension beam, and the lower end is used to connect the waling; the vertical distance between the lower end of the waling connector and the suspension beam is greater than the difference between the installation height of the suspension beam and the designed top elevation of the steel pipe pile retaining wall to be constructed; the lower ends of the two waling connectors are respectively used to connect two opposite walings, and there is a spacing between the lower ends of the two waling connectors, and the spacing between the two waling connectors satisfies the following condition: after the two walings are respectively connected to the lower ends of the two waling connectors, the spacing between the two walings is equal to the outer diameter of the steel pipe pile used to construct the steel pipe pile retaining wall to be constructed.

2. The auxiliary connector for connecting a steel pipe pile and a waling according to claim 1, wherein A welding surface for connecting the waling is formed on one side of the lower end surface of the waling connector facing the steel pipe pile retaining wall to be constructed.

3. The auxiliary connector for connecting a steel pipe pile and a waling according to claim 1 or 2, characterized in that, The waling connector includes a vertical connector and an inclined connector; the vertical connector is arranged vertically, its upper end is connected to the suspension beam, and its lower end is used to connect the waling; the inclined connector is connected between the lower end of the vertical connector and the suspension beam, and the inclined connector, the vertical connector and the suspension beam enclose a triangle; among the auxiliary connectors, the vertical connectors of the two waling connectors are arranged close to each other, and the inclined connectors are arranged away from each other.

4. The auxiliary connector for connecting the steel pipe pile and the waling according to claim 3, wherein, The waling connector further includes an inclined reinforcement connector connected between the middle of the vertical connector and the waling, and the vertical connector, the inclined reinforcement connector and the waling enclose a triangle.

5. The auxiliary connector for connecting a steel pipe pile and a waling according to claim 3, wherein The auxiliary connector further includes a cross brace connected between the two waling connectors, and the cross brace is arranged close to the lower end of the waling connector.

6. Construction method of steel pipe pile retaining wall, characterized in that, Applying the auxiliary connector for connecting the steel pipe pile and the waling according to any one of claims 1-5 in construction, including the following steps: Determining the installation position of the auxiliary connector: determining the installation positions for at least two of the auxiliary connectors in the construction direction of the steel pipe pile retaining wall to be constructed; when determining the installation positions, select the fixtures for installing the auxiliary connectors according to the relative position relationship of the existing fixtures on both sides of the steel pipe pile retaining wall to be constructed, so as to determine the installation positions of the auxiliary connectors; Connecting the waling and the auxiliary connector: according to the relative position relationship between the determined installation positions of the multiple auxiliary connectors and the construction position of the steel pipe pile retaining wall to be constructed, connecting the multiple auxiliary connectors to the corresponding positions of a pair of walings used to construct the steel pipe pile retaining wall to be constructed; when connecting, among the multiple auxiliary connectors, the waling connectors located on the same side of the steel pipe pile retaining wall to be constructed are connected to the same waling; Fixing the auxiliary connector: installing each of the auxiliary connectors at its installation position so that the waling connected thereto is suspended at the construction position of the steel pipe pile retaining wall to be constructed; Driving steel pipe piles: Loft the pile positions of the steel pipe piles in the space between a pair of the wales connected by the auxiliary connectors, and vibrate and sink the steel pipe piles at the lofted pile positions. Connecting the steel pipe piles and the wales: Pass the tie rods through between two adjacent steel pipe piles, and use the tie rods to tightly connect a pair of the wales located on both sides of the steel pipe piles, so as to clamp the steel pipe piles by the pair of wales and complete the connection between the wales and the steel pipe piles.

7. The construction method of the steel pipe pile retaining wall according to claim 6, characterized in that, In the step of determining the installation positions of the auxiliary connectors, the installation positions of the multiple auxiliary connectors are spaced apart in the construction direction of the to-be-constructed steel pipe pile retaining wall.

8. The construction method of the steel pipe pile retaining wall according to claim 6, characterized in that, In the step of driving the steel pipe piles, when the pile position of the to-be-driven steel pipe pile is directly below the suspension beam of the auxiliary connector, cut off the part of the suspension beam of the auxiliary connector located between the two wale connectors.

9. The construction method of the steel pipe pile retaining wall according to claim 6, characterized in that In the step of driving the steel pipe piles, the specific steps of vibrating and sinking the steel pipe piles are as follows: Install a pile sinking guide frame at the lofted pile position, lift and place the to-be-driven steel pipe pile into the pile sinking guide frame, use the pile sinking guide frame to control the sinking direction of the steel pipe pile, and use a vibration hammer to vibrate and sink the steel pipe pile.

10. The construction method of the steel pipe pile retaining wall according to claim 6, characterized in that, The wale includes two wale beams arranged parallel and opposite to each other up and down, and connecting plates for connecting the two wale beams; both ends of the connecting plate are respectively connected to the two wale beams, there are multiple connecting plates, and the multiple connecting plates are arranged at intervals along the extending direction of the wale; a spacing is reserved between the two wale beams for the tie rods to pass through; in the step of connecting the steel pipe piles and the wales, the tie rods pass through between the two wale beams of the wale, and fastening nuts are threadedly connected to both ends of the tie rods, and the fastening nuts are abutted against the two wale beams to complete the tight connection of the wales on both sides of the steel pipe pile.

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