Steel pipe structure column piles based on engineering pipe piles

Abstract

The present invention discloses a steel pipe structure column pile based on an engineering pipe pile, comprising an engineering pipe pile, the end of which is screwed into a pipe pile anchor bar; a column pipe pile, located above the engineering pipe pile; a load-bearing composite member and a top corbel structure, connected to the upper end of the column pipe pile; a steel support beam, connected to the column pipe pile through a top corbel mechanism, and the top corbel structures on adjacent column pipe piles jointly support one or more steel support beams; a combined steel support unit, grafted on the top of the steel support beam; a locking portion, arranged on the steel support beam, used to fix the combined steel support unit and limit the displacement of the combined steel support unit. The present invention does not need to leave holes on the bottom plate for later filling, and the bottom plate can be poured in place at one time during construction, effectively reducing the risk of water seepage on the bottom plate, while simplifying the processing method of the junction node between the bottom plate and the column pile, making the construction convenient, and effectively speeding up the construction progress.

Description

Technical Field

[0001] The invention relates to the field of column pile construction of an internal support system in foundation pit support, and in particular to a steel pipe structure column pile based on an engineering pipe pile. Background Art

[0002] In the support structure of deep foundation pit engineering, internal support systems such as angle braces and butt braces are generally used. This type of support system generally requires column piles to provide fulcrums for the support system to prevent serious deflection and deformation caused by the large span of the support system. When the engineering piles are pipe piles, the traditional column pile construction process is to inject three-axis deep mixing + lattice columns. This form requires additional three-axis deep mixing piles, which is costly; or the top elevation of the engineering pipe piles is constructed to the bottom of the support beam and used as column piles. When pouring the bottom plate, post-casting holes need to be left at the column pile position. After the internal support is removed, the pile cutting and bottom plate pouring can be carried out. This construction method will increase the risk of bottom plate leakage, and the process takes a long time, affecting the construction progress.

[0003] So further research and innovation are needed. Summary of the invention

[0004] The purpose of the present invention is to provide a steel pipe structure column pile based on an engineering pipe pile to solve the problems existing in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steel pipe structure column pile based on an engineering pipe pile, comprising an engineering pipe pile for being pressed into the soil, the end of the engineering pipe pile being screwed into the pipe pile anchoring bar; a column pipe pile located above the engineering pipe pile; a load-bearing composite member connected between the engineering pipe pile and the column pipe pile; a top corbel structure connected to the upper end of the column pipe pile; a steel support beam connected to the column pipe pile through a top corbel mechanism, the top corbel structures on adjacent column pipe piles jointly supporting one or more steel support beams; a combined steel support unit grafted on the top of the steel support beam; a locking portion arranged on the steel support beam for fixing the combined steel support unit to limit the displacement of the combined steel support unit.

[0006] As a preferred embodiment of the present invention: the top corbel structure includes a curved steel plate, which is used to be connected to the outer wall of the column pipe pile by welding; a stiffening rib plate, which is connected between the bottom of the curved steel plate and the column pipe pile to support the curved steel plate, and a steel support beam is connected to the curved steel plate.

[0007] As a preferred embodiment of the present invention: the locking portion includes a first clip for connecting to the top of the combined steel support unit; a second clip for connecting to the top of the steel beam; a third clip for connecting to the bottom of the steel beam; a connecting rod and a nut are used to fix the first clip, the second clip and the third clip to fix the combined steel support unit on the steel beam.

[0008] As a preferred embodiment of the present invention: each clamping part is composed of two groups of L-shaped plates, and the two L-shaped plates on the top of the steel support beam are clamped on the two ends of the combined steel support unit. The L-shaped plate is provided with a through hole, and a connecting rod is inserted into the through hole. The connecting rod is provided with threaded sections at the three groups of through holes, and a nut for locking is provided on each threaded section.

[0009] As a preferred embodiment of the present invention: the column pipe pile includes a first column pipe pile, which is connected to the engineering pipe pile through a load-bearing composite component; a second column pipe pile, which is detachably connected to the top of the first column pipe pile; and a pipe pile splicing assembly, which is connected between the first column pipe pile and the second column pipe pile to realize the assembly or disassembly of the first column pipe pile and the second column pipe pile.

[0010] As a preferred embodiment of the present invention: the pipe pile splicing assembly includes a second connecting plate connected to the top of the first column pipe pile; a first connecting plate connected to the bottom of the second column pipe pile; wherein the first connecting plate and the second connecting plate are fixed by a connecting piece.

[0011] As a preferred embodiment of the present invention: a conical plug plate is provided at the bottom of the second column pipe pile, and a conical socket matching the conical plug plate is provided at the top of the first column pipe pile. After the first column pipe pile is connected to the second column pipe pile, the conical plug plate is inserted into the conical socket for fixation.

[0012] As a preferred embodiment of the present invention: the conical insert plate is a body of revolution or a pyramidal structure.

[0013] As a preferred embodiment of the present invention: a protective plate is provided at the bottom of the conical plug plate, and the protective plate is used to seal and protect the gap between the first column pipe pile and the second column pipe pile.

[0014] As a preferred embodiment of the present invention: a first cavity and a second cavity are provided in the first column pipe pile, the second cavity is loaded with hydraulic oil, the first cavity and the second cavity are located at the first connecting plate, an oil filling hole for filling the second cavity with oil is provided on the first connecting plate, a piston is sealingly and slidingly provided in the second cavity, a push rod is connected to the top of the piston, the push rod passes upward through the first cavity and extends to the outside, a baffle is provided in the first cavity, the baffle is fixed to the push rod, a spring connected between the baffle and the bottom wall of the first cavity is sleeved on the push rod, in a natural state, The baffle moves upward under the action of the spring force, thereby driving the push rod and the piston to move upward. A limit groove is provided on the inner wall of the tapered socket at the top of the first column pipe pile, and the cross-section of the limit groove is trapezoidal, and a tapered hole is provided on the inner wall of the tapered plug plate at the limit groove, and a movable limit ball is clamped in the tapered hole. When the limit ball is clamped in the limit groove, the first column pipe pile and the second column pipe pile are inseparable. A deformation component is provided on the inner wall of the tapered hole. When the piston moves downward, hydraulic oil enters the deformation component through the channel, and the deformation component provides support force for the limit ball due to expansion.

[0015] As a preferred embodiment of the present invention: the deformation component is a sealing bag, and the sealing bag is connected to the second cavity through a channel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention innovatively invents a steel pipe structure column pile based on an engineering pipe pile, and directly fixes the column pile on the engineering pipe pile. First, there is no need to leave holes for post-casting on the bottom plate like in the traditional construction process, and the bottom plate can be cast at one time, which reduces the risk of leakage, simplifies the construction process, and speeds up the construction progress; second, the steel pipe structure column pile can be used 2 to 3 times, and has a certain turnover efficiency. At the same time, the steel is treated as waste materials, and the recycling value is also high, which can further reduce the construction cost. During construction, there is no need to leave holes on the bottom plate for post-filling like in the traditional engineering pipe piles and column pipe piles. The bottom plate can be cast in place at one time during construction, which effectively reduces the risk of water seepage in the bottom plate. At the same time, the processing method of the handover node between the bottom plate and the column pipe pile is simplified, so that the construction is convenient and the construction progress can be effectively accelerated. At the same time, after the base plate construction is completed, when the column pipe piles are removed, they are cut directly at the top of the base plate. The remaining column pipe piles can continue to be circulated to projects with smaller basement heights. It is estimated that they can be circulated 2 to 3 times. When they can no longer be circulated, the column pipe piles will be recycled as waste materials to further reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 1 .

[0019] Figure 2 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 2 .

[0020] Figure 3 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 3 .

[0021] Figure 4 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 4 .

[0022] Figure 5 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 5 .

[0023] Figure 6 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 6 .

[0024] Figure 7 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 7 .

[0025] Figure 8 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 8 .

[0026] Fig. 9 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 9 .

[0027] Fig.10 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 10 .

[0028] Fig.11 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 10 one.

[0029] Fig.12 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 10 two.

[0030] Fig.13 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 10 three.

[0031] Fig.14 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 10 Four.

[0032] Fig.15 The structure of the steel pipe structure column pile based on the engineering pipe pile of the present invention is schematically shown. Figure 10 five.

[0033] Fig.16 The invention is a steel pipe structure column pile based on an engineering pipe pile. Fig.15 Schematic diagram of the structure of part A.

[0034] Fig.17 The invention is a steel pipe structure column pile based on an engineering pipe pile. Fig.16 Schematic diagram of the structure of part B.

[0035] In the figure: 100, engineering pipe pile; 200, column pipe pile; 2001, first column pipe pile; 2002, second column pipe pile; 202, curved steel plate; 201, stiffening rib plate; 203, steel joist; 2031, first clamping piece; 2032, second clamping piece; 2033, third clamping piece; 2034, connecting rod; 2035, nut; 204, combined steel support unit ; 300, load-bearing composite member; 301, steel pipe a; 3011, steel pipe b; 3013, slot a; 3014, slot b; 3015, protrusion b; 3016, protrusion a; 302, water stop plate; 303, wing plate; 304, pipe pile anchor bar; 305, annular plate; 400, bottom plate fixing assembly; 402, first group of bottom plate steel bars; 403, first steel bar body; 40 4. Second steel bar body; 405. Third steel bar body; 406. Fourth steel bar body; 407. Fifth steel bar body; 408. Second group of bottom plate steel bars; 409. Third group of bottom plate steel bars; 410. Fourth group of bottom plate steel bars; 411. Fifth group of bottom plate steel bars; 500. Reinforcement assembly; 501. Steel bar cage; 502. Reinforcement steel bars; 600. Pipe pile splicing assembly; 601. First connecting plate; 602. Second connecting plate; 603. Connector; 604. First cavity; 605. Push rod; 606. Baffle; 607. Spring; 608. Piston; 609. Channel; 610. Conical plug plate; 6101. Conical socket; 611. Protective plate; 612. Deformation assembly; 613. Conical hole; 614. Limiting ball; 615. Limiting groove; 616. Second cavity. Implementation

[0036] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be understood that the terms "include / comprise", "consist of..." or any other variations are intended to cover non-exclusive inclusion, so that a product, device, process or method that includes a series of elements includes not only those elements, but also may include other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of more restrictions, the elements defined by the sentence "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method that includes the elements.

[0038] It is also necessary to understand that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device, component or structure must have a specific direction, be constructed or operate in a specific direction, and should not be understood as a limitation on the present invention.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] like Figures 1 to 17The present invention discloses a steel pipe structure column pile based on an engineering pipe pile 100, including an engineering pipe pile 100, the engineering pipe pile 100 is used to be pressed into the soil, the end of the engineering pipe pile 100 is screwed into the pipe pile anchoring bar 304, the pipe pile anchoring bar 304 is used to connect the column pipe pile 200 through a load-bearing composite component 300, and adopts such a scheme, firstly, the load-bearing composite component 300 is sleeved outside the pipe pile anchoring bar 304, the load-bearing composite component 300 can be fixed on the engineering pipe pile 100 by welding, and then the pipe pile anchoring bars 304 are welded to the inner wall of the load-bearing composite component 300 one by one.

[0042] In one embodiment, the upper end of the column pipe pile 200 has a top corbel structure, and the top corbel structure includes a curved steel plate 202, which is used to be connected to the outer wall of the column pipe pile 200 and can be connected to the column pipe pile 200 by welding. The bottom of the curved steel plate 202 is connected to the column pipe pile 200 through a stiffening rib plate 201. The provision of the stiffening rib plate 201 can improve the supporting force of the curved steel plate 202. The top of the curved steel plate 202 is connected with a steel support beam 203. The curved steel plates 202 on adjacent column pipe piles 200 jointly support one or more steel support beams 203. The top of the steel support beam 203 is grafted with a combined steel support unit 204. The size and combination method of the combined steel support unit 204 can be determined according to the size and shape of the foundation pit. A locking portion for fixing the combined steel support unit 204 is provided on the steel support beam 203. The presence of the locking portion is used to limit the displacement of the combined steel support unit 204.

[0043] By adopting such a solution, it is not necessary to leave holes on the bottom plate for later filling when the traditional engineering pipe piles 100 are shared with the column pipe piles. The bottom plate can be poured in place at one time during construction, effectively reducing the risk of water seepage in the bottom plate. At the same time, the processing method of the intersection between the bottom plate and the column pipe piles 200 is simplified, making the construction convenient and effectively speeding up the construction progress. At the same time, after the bottom plate construction is completed, when the column pipe piles 200 are removed, they are directly cut off at the top of the bottom plate. The remaining column pipe piles 200 can continue to be used in projects with smaller basement heights. It is expected that they can be turned over 2 to 3 times. When they cannot be turned over in the end, the column pipe piles 200 are recycled as waste materials to further reduce costs.

[0044] You can choose, for example Fig.13As shown, the locking portion includes a first clip 2031, a second clip 2032 and a third clip 2033, each of which is composed of two groups of L-shaped plates, wherein the first clip 2031 is used to connect to the top of the combined steel support unit 204, the second clip 2032 is used to connect to the top of the steel beam 203 and the two L-shaped plates are clamped at both ends of the combined steel support unit 204, and the third clip 2033 is connected to the bottom of the steel beam 203; through holes are provided on the first clip 2031, the second clip 2032 and the third clip 2033, a connecting rod 2034 is inserted into the through hole, the connecting rod 2034 is provided with threaded sections at the three groups of through holes, and a nut 2035 for locking is provided on each threaded section.

[0045] By adopting such a scheme, only a few structures are needed to fix the combined steel support unit 204, and the structures can be quickly installed or disassembled. During installation, first install the nut 2035 located at the second clip 2032 in the middle part of the connecting rod 2034, and then place the second clip 2032 on both sides of the bottom edge of the combined steel support unit 204, and then put the first clip 2031 on the top of the connecting rod 2034 and lock it with the nut 2035, and then put the third clip 2033 on the bottom of the connecting rod 2034 and lock it with the nut 2035.

[0046] In one embodiment, if Fig.15 As shown, the column pipe pile 200 includes a first column pipe pile 2001 and a second column pipe pile 2002. The first column pipe pile 2001 and the second column pipe pile 2002 are connected by a pipe pile splicing assembly 600. In order to improve the stability of the connection between the first column pipe pile 2001 and the second column pipe pile 2002, in this embodiment:

[0047] The pipe pile splicing assembly 600 includes a second connecting plate 602 connected to the top of the first column pipe pile 2001 and a first connecting plate 601 connected to the bottom of the second column pipe pile 2002. The first connecting plate 601 and the second connecting plate 602 are fixed by a connecting member 603. The connecting member 603 is composed of bolts, nuts and washers. A conical plug plate 610 is provided at the bottom of the second column pipe pile 2002, and a conical socket 6101 matched with the conical plug plate 610 is provided at the top of the first column pipe pile 2001. After the first column pipe pile 2001 is connected to the second column pipe pile 2002, the conical plug plate 610 is inserted into the conical socket 6101 to achieve fixation.

[0048] Optionally, the conical plug plate 610 is a rotating body structure, and of course, it can also be set to a pyramidal structure. When set to a pyramidal structure, it can prevent the first column pipe pile 2001 and the second column pipe pile 2002 from rotating, and has the effect of strengthening fixation.

[0049] In one embodiment, if Figure 15-17 As shown, in order to further improve the connection strength between the first column pipe pile 2001 and the second column pipe pile 2002, a first cavity 604 and a second cavity 616 are provided in the first column pipe pile 2001, and the second cavity 616 is loaded with hydraulic oil. The first cavity 604 and the second cavity 616 are located at the first connecting plate 601, and an oil filling hole (not shown in the figure) for filling the second cavity 616 with oil is provided on the first connecting plate 601. A sealing sliding is provided in the second cavity 616. The piston 608 has a push rod 605 connected to the top of the piston 608. The push rod 605 passes through the first cavity 604 upward and extends to the outside. A baffle 606 is arranged in the first cavity 604. The baffle 606 is fixed to the push rod 605. A spring 607 connected between the baffle 606 and the bottom wall of the first cavity 604 is sleeved on the push rod 605. In a natural state, the baffle 606 moves upward under the action of the elastic force of the spring 607, thereby driving the push rod 605 and the piston 608 to move upward. Fig.17 As shown, a limiting groove 615 is provided on the inner wall of the tapered socket 6101 at the top of the first column pipe pile 2001, and the cross-section of the limiting groove 615 is trapezoidal, and a tapered hole 613 is provided on the inner wall of the tapered plug plate 610 at the limiting groove 615, and a movable limiting ball 614 is clamped in the tapered hole 613. When the limiting ball 614 is clamped in the limiting groove 615, the first column pipe pile 2001 and the second column pipe pile 2002 are inseparable. In this embodiment, a deformation component 612 is provided on the inner wall of the tapered hole 613. The deformation component 612 can be specifically a sealing bag, which is connected to the second cavity 616 through a channel 609. When the piston 608 moves downward, the hydraulic oil enters the deformation component 612 through the channel 609. The deformation component 612 provides support force to the limiting ball 614 due to expansion, and drives the limiting ball 614 to be clamped in the limiting groove 615.

[0050] By adopting such a solution, the anti-loosening effect between the first column pipe pile 2001 and the second column pipe pile 2002 can be improved, so that the first column pipe pile 2001 and the second column pipe pile 2002 have better connection strength after assembly. When the first connecting plate 601 and the second connecting plate 602 are connected by the connecting piece 603, the push rod 605 can be pushed downward synchronously, which has the advantages of easy operation and high connection strength.

[0051] Alternatively, a protective plate 611 is provided at the bottom of the conical insert plate 610 , and the protective plate 611 plays a role in sealing and protecting the gap between the first column pipe pile 2001 and the second column pipe pile 2002 .

[0052] In order to improve the connection between the engineering pipe pile 100 and the column pipe pile 200, the present application also discloses a common connection node between the engineering pipe pile 100 and the column pipe pile 200, the node includes a load-bearing composite component 300 connected between the engineering pipe pile 100 and the column pipe pile 200, the load-bearing composite component 300 includes an annular plate 305 for connecting to the top of the engineering pipe pile 100 and the bottom of the column pipe pile 200, the annular plate 305 can be cast or welded on the pipe pile anchor rib 304, a supporting component is sleeved between the two annular plates 305, the supporting component is used to connect and support the engineering pipe pile 100 and the column pipe pile 200, a water stop plate 302 is provided on the outside of the supporting component, and a wing plate 303 is provided at the bottom of the water stop plate 302, the water stop plate 302 and the wing plate 303 can withstand the pressure and buoyancy of the bottom plate and play a water stopping role at the same time.

[0053] Optionally, the supporting component is preferably a rotating body structure, and the water stop plate 302 is specifically an annular plate 305 and is sleeved on the outside of the supporting component. In this embodiment, the annular plate 305 is parallel to the ground, and the cross-section of the wing plate 303 is a right-angled triangle, which is in multiple groups and welded between the annular plate 305 and the outside of the supporting component.

[0054] By adopting the above-mentioned solution, during construction, there is no need to leave holes on the base plate for later filling as in the case of traditional engineering pipe piles 100 and column piles. The base plate can be poured in place at one time during construction, effectively reducing the risk of water seepage in the base plate. At the same time, the handling method of the junction between the base plate and the column piles is simplified, making the construction more convenient and effectively speeding up the construction progress.

[0055] like Figure 1-Figure 3 This embodiment discloses a first implementation of the supporting component, which includes a steel pipe a301, which is used to be sleeved on the outside of multiple pipe pile anchor ribs 304, each pipe pile anchor rib 304 is welded and fixed to the steel pipe a301, and the water stop plate 302 is connected to the outside of the steel pipe a301, and one right-angle side of the wing plate 303 is welded to the steel pipe a301, and the other right-angle side is welded to the bottom of the water stop plate 302.

[0056] In this scheme, the engineering pipe pile 100 is first pressed into the soil to a certain depth, and then the pipe pile anchoring bar 304 is screwed into the end of the engineering pipe pile 100, and the load-bearing composite component 300 is sleeved outside the pipe pile anchoring bar 304, and the load-bearing composite component 300 is fixed to the engineering pipe pile 100 by welding, and then the pipe pile anchoring bar 304 is welded to the inner wall of the load-bearing composite component 300 one by one. Then, the column pipe pile 200 is docked, and the column pipe pile 200 and the load-bearing composite component 300 are also fixed together by welding, and finally the pipe pile is sent into the ground as a whole to ensure that the load-bearing composite component 300 is located within the elevation range of the cap.

[0057] like Figure 4-Figure 6As shown, this embodiment discloses a second implementation of the supporting component, which includes a steel pipe a301. The difference from the first embodiment is that this embodiment also includes a steel pipe b3011. The diameter of the steel pipe b3011 is smaller than the diameter of the steel pipe a301. During installation, the steel pipe b3011 is embedded in the inner side of multiple pipe pile anchor ribs 304 and fixed by welding. The adoption of such a scheme can further improve the supporting strength of the load-bearing composite component 300.

[0058] like Figure 7 As shown, this embodiment discloses a third implementation method of supporting various components, which also includes a steel pipe a301 and a steel pipe b3011. The difference from the second embodiment is that in this embodiment, a groove a3013 is provided on the inner side of the steel pipe a301, and the number of the grooves a3013 is the same as the number of the pipe pile anchor ribs 304. The pipe pile anchor ribs 304 are inserted into the grooves a3013 and welded to the pipe pile anchor ribs 304 at the openings of the grooves a3013. A plurality of grooves b3014 are provided on the inner wall of the steel pipe a301. The grooves b3014 are multiple and circumferentially distributed between two adjacent grooves a3013. A protrusion a3016 is provided on the outer side of the steel pipe b3011. The protrusion a3016 is used to be engaged in the groove a3013. A protrusion b3015 is also provided on the outer side of the steel pipe b3011. The protrusion b3015 is used to be engaged in the groove b3014.

[0059] Such a solution can, on the one hand, prevent the pipe pile anchor bar 304 from being de-welded from the steel pipe a301, and on the other hand, improve the torsional resistance between the engineering pipe pile 100 and the column pipe pile 200.

[0060] In one embodiment, a reinforcement assembly 500 is provided between the engineering pipe pile 100 and the column pipe pile 200 , and the reinforcement assembly 500 includes a steel cage 501 and reinforcement steel bars 502 .

[0061] like Fig. 9 , Fig.10 As shown, the present application also includes a bottom plate fixing assembly 400, and the bottom plate reinforcing assembly 500 is mainly used to connect the bottom plate and the load-bearing composite member 300 as a whole, so as to facilitate the force transmission of the bottom plate. The bottom plate fixing assembly 400 is described in detail as follows:

[0062] like Fig. 9As shown, a first implementation manner of the bottom plate fixing assembly 400 is shown: in this embodiment, the bottom plate fixing assembly 400 includes a first group of bottom plate steel bars 402 and a second group of bottom plate steel bars 408, the first group of bottom plate steel bars 402 and the second group of bottom plate steel bars 408 are arranged perpendicular to each other, each group of bottom plate steel bars consists of two steel bars, each steel bar consists of a first steel bar body 403, a second steel bar body 404, a third steel bar body 405, a fourth steel bar body 406 and a fifth steel bar body 407, wherein the axes of the first steel bar body 403 and the fifth steel bar body 407 coincide, the second steel bar body 404 and the fourth steel bar body 406 are bent and connected to the third steel bar body 405, so that the steel bar is bent and passes through the pipe pile through the cooperation of the second steel bar body 404, the third steel bar body 405, the fourth steel bar body 406 and the outside of the pipe pile.

[0063] like Fig.10 As shown, a second implementation of the bottom plate fixing assembly 400 is shown: in this embodiment, the bottom plate fixing assembly 400 includes a third group of bottom plate steel bars 409, a fourth group of bottom plate steel bars 410 and a fifth group of bottom plate steel bars 411, and the third group of bottom plate steel bars 409, the fourth group of bottom plate steel bars 410 and the fifth group of bottom plate steel bars 411 are arranged equidistantly in a circle around the pipe pile, and each group of bottom plate steel bars consists of two steel bars, and each steel bar consists of a first steel bar body 403, a second steel bar body 404, a third steel bar body 405, a fourth steel bar body 406 and a fifth steel bar body 407, wherein the axes of the first steel bar body 403 and the fifth steel bar body 407 coincide, and the second steel bar body 404 and the fourth steel bar body 406 are bent and connected to the third steel bar body 405, so that the steel bar is bent and passes through the pipe pile through the cooperation of the second steel bar body 404, the third steel bar body 405, the fourth steel bar body 406 and the outside of the pipe pile.

[0064] During the pipe pile construction, one end of the pipe pile anchor bar 304 is threaded and screwed into the threaded hole in the end plate of the engineering pipe pile 100, and the load-bearing composite component 300 is welded between the engineering pipe pile 100 and the column pipe pile 200. At the same time, the pipe pile anchor bar 304 is fully welded inside the load-bearing composite component 300, and then the load-bearing composite component 300 is sent to the foundation elevation through a static pressure machine to ensure that the load-bearing composite component 300 is located within the foundation range.

[0065] Before the bottom plate is constructed, a wing plate 303 is welded to the load-bearing composite member 300 to strengthen the load-bearing performance of the load-bearing composite member 300, and the base steel bars and the bottom plate steel bars are welded to the load-bearing composite member 300 to form a whole.

[0066] After the bottom slab concrete pouring is completed and the supporting structure is formed and replaced, the column pipe piles 200 are cut off by ring cutting, and the pipe piles are cored according to the design and specification requirements.

[0067] During the construction of the bottom plate, the wing plate 303 and the water stop plate 302 are welded on the load-bearing composite component 300 to bear the pressure and anti-floating force of the bottom plate and to stop water at the same time. When the bottom plate fixing assembly 400 is tied, the steel bar is bent and passed when it encounters the load-bearing composite component 300. At the same time, the first steel bar body 403 and the fifth steel bar body 407 form a reinforcing rib, and the reinforcing rib must meet the anchorage and lap length required by the specification, and the other parts of the steel bar and the reinforcing rib are welded to the load-bearing composite component 300, so that the bottom plate and the load-bearing composite component 300 are connected as a whole, which is convenient for the force transmission of the bottom plate.

[0068] After dismantling the support, the column pipe pile 200 is cut off to the top elevation of the bottom plate by means of circular cutting, and then the steel cage 501 is lowered and the core is filled with micro-expansive concrete.

[0069] By dividing the column pipe pile 200 into the first column pipe pile 2001 and the second column pipe pile 2002, the upper part can be directly dismantled through the pipe pile splicing assembly 600, and only a smaller part of the column pipe pile 200 needs to be cut off, thereby increasing the number of recycling times.

[0070] The present invention based on the above conception does not need to leave holes on the bottom plate for later filling during construction as in the case of traditional engineering pipe piles 100 and column pipe piles 200. The bottom plate can be poured in place at one time during construction, effectively reducing the risk of water seepage in the bottom plate. At the same time, the processing method of the junction between the bottom plate and the column piles is simplified, making the construction more convenient and effectively speeding up the construction progress.

[0071] In summary, the present application invents a load-bearing composite component, which is sandwiched between two sections of engineering pipe piles. During construction, the component is delivered to the range of the foundation. After the bottom plate concrete is poured, the component can effectively transfer the force of the bottom plate to the engineering piles. Therefore, even if the engineering piles are used as column piles, the bottom plate can be closed in advance during the bottom plate construction. After the support is removed, the column piles are cut off and the core filling construction is carried out. The load-bearing composite component can effectively speed up the construction progress, facilitate the treatment measures of the nodes between the column piles and the bottom plate, and improve the construction production efficiency.

[0072] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A steel pipe structure column pile based on an engineering pipe pile, characterized in that: include The engineering pipe pile (100) is used to be pressed into the soil, and the end of the engineering pipe pile (100) is screwed into the pipe pile anchoring bar (304); A column pipe pile (200) is located above the engineering pipe pile (100); A load-bearing composite component (300) is connected between the engineering pipe pile (100) and the column pipe pile (200); A top corbel structure connected to the upper end of the column pipe pile (200); A steel joist (203) is connected to the column pipe pile (200) via a top corbel mechanism, and the top corbel structures on adjacent column pipe piles (200) jointly support one or more steel joists (203); A combined steel support unit (204) is grafted onto the top of the steel joist (203); A locking portion, arranged on the steel support beam (203) and used for fixing the combined steel support unit (204) to limit the combined steel support unit (204) from displacement; The column pipe pile (200) comprises: The first column pipe pile (2001) is connected to the engineering pipe pile (100) via a load-bearing composite component (300); A second column pipe pile (2002) is detachably connected to the top of the first column pipe pile (2001); A pipe pile splicing assembly (600) is connected between the first column pipe pile (2001) and the second column pipe pile (2002) to realize the assembly or disassembly of the first column pipe pile (2001) and the second column pipe pile (2002); The pipe pile splicing assembly (600) comprises: A second connecting plate (602) connected to the top of the first column pipe pile (2001); A first connecting plate (601) connected to the bottom of the second column pipe pile (2002); Wherein, the first connecting plate (601) and the second connecting plate (602) are fixed by a connecting member (603); The bottom of the second column pipe pile (2002) is provided with a conical plug plate (610), and the top of the first column pipe pile (2001) is provided with a conical socket (6101) matched with the conical plug plate (610). After the first column pipe pile (2001) is connected to the second column pipe pile (2002), the conical plug plate (610) is inserted into the conical socket (6101) to achieve fixation; The first column pipe pile (2001) is provided with a first cavity (604) and a second cavity (616), the second cavity (616) is loaded with hydraulic oil, the first cavity (604) and the second cavity (616) are located at the first connecting plate (601), an oil injection hole for injecting oil into the second cavity (616) is provided on the first connecting plate (601), a piston (608) is sealed and slidably arranged in the second cavity (616), and the piston ( A push rod (605) is connected to the top of the first cavity (608), and the push rod (605) passes through the first cavity (604) upward and extends to the outside. A baffle (606) is arranged in the first cavity (604), and the baffle (606) is fixed to the push rod (605). A spring (607) connected between the baffle (606) and the bottom wall of the first cavity (604) is sleeved on the push rod (605). In a natural state, the baffle (606) is in the spring (607). 07) moves upward under the action of the elastic force, thereby driving the push rod (605) and the piston (608) to move upward. The inner wall of the conical socket (6101) at the top of the first column pipe pile (2001) is provided with a limit groove (615), the cross section of the limit groove (615) is trapezoidal, and the inner side wall of the conical plug plate (610) is provided at the limit groove (615), and a movable The limiting ball (614) is inserted into the limiting groove (615), so that the first column pipe pile (2001) and the second column pipe pile (2002) are inseparable. A deformation component (612) is arranged on the inner wall of the conical hole (613). When the piston (608) moves downward, the hydraulic oil enters the deformation component (612) through the channel (609), and the deformation component (612) provides support force to the limiting ball (614) due to expansion.

2. The steel pipe structure column pile based on the engineering pipe pile as claimed in claim 1, characterized in that: The top corbel structure comprises: The arc-shaped steel plate (202) is used to be connected to the outer wall of the column pipe pile (200) by welding to the column pipe pile (200); The stiffening rib plate (201) is connected between the bottom of the arc-shaped steel plate (202) and the column pipe pile (200) and is used to support the arc-shaped steel plate (202). The steel support beam (203) is connected to the arc-shaped steel plate (202).

3. The steel pipe structure column pile based on the engineering pipe pile as claimed in claim 1 or 2, characterized in that: The locking portion comprises: A first clamping member (2031) is used to be connected to the top of the combined steel support unit (204); A second clamping member (2032) is used to be connected to the top of the steel joist (203); A third clamping member (2033) is used to be connected to the bottom of the steel support beam (203); The connecting rod (2034) and the nut (2035) are used to fix the first clamping member (2031), the second clamping member (2032) and the third clamping member (2033), so that the combined steel support unit (204) is fixed on the steel support beam (203).

4. The steel pipe structure column pile based on the engineering pipe pile as claimed in claim 3, characterized in that: Each clamping member is composed of two groups of L-shaped plates. The two L-shaped plates at the top of the steel support beam (203) are clamped at the two ends of the combined steel support unit (204). The L-shaped plates are provided with through holes, and a connecting rod (2034) is inserted into the through holes. The connecting rod (2034) is provided with threaded sections corresponding to the three groups of through holes, and a nut (2035) for locking is provided on each threaded section.

5. The steel pipe structure column pile based on the engineering pipe pile as claimed in claim 1, characterized in that: The conical insert plate (610) is a body of revolution or a pyramidal structure; A protective plate (611) is provided at the bottom of the conical plug plate (610), and the protective plate (611) is used to seal and protect the gap between the first column pipe pile (2001) and the second column pipe pile (2002).

6. The steel pipe structure column pile based on the engineering pipe pile as claimed in claim 1, characterized in that: The deformation component (612) is a sealing bag, and the sealing bag is connected to the second cavity (616) through a channel (609).

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