A reinforced concrete cast-in-place pile foundation

Abstract

The present invention is applicable to the technical field of cast-in-place pile foundations, and provides a reinforced concrete cast-in-place pile foundation, which includes main reinforcement bars, outer stirrups and inner stirrups, and further includes: a fixing mechanism and a connecting component. The fixing mechanism includes an outer fixing component and an inner fixing component. The inner fixing component is located inside the main reinforcement bars, and the outer fixing component is located outside the main reinforcement bars. Both ends of the outer fixing component are provided with elbows, and the connecting component is respectively connected to the outer fixing component and the inner fixing component. In the reinforced concrete cast-in-place pile foundation of the present invention, through the connecting component, the outer fixing component and the inner fixing component, the rapid connection of the main reinforcement bars, the outer stirrups and the inner stirrups can be realized, replacing the traditional manual fixing method of tying wire. It not only simplifies the construction process, speeds up the project progress, reduces the labor intensity and the possibility of artificial misalignment, realizes the function of cost reduction and efficiency increase, but also facilitates the orderly classification removal and recycling of the outer stirrups, main reinforcement bars and inner stirrups during future maintenance or renovation.

Description

Technical Field

[0001] The present invention belongs to the technical field of cast-in-place pile foundations, and particularly relates to a reinforced concrete cast-in-place pile foundation. Background Art

[0002] Reinforced concrete cast-in-place piles are a type of foundation widely used in modern buildings and bridge projects. They are formed by drilling or excavating holes in the soil and then placing a steel reinforcement cage and pouring concrete. Before the construction of reinforced concrete cast-in-place piles, it is necessary to first construct and establish their pile foundations, and the steel reinforcement cage is a part of the pile foundation.

[0003] For the main reinforcement bars and stirrups of the existing reinforced concrete cast-in-place pile foundation, a plurality of the main reinforcement bars are uniformly arranged along the circumferential direction of the stirrup. The stirrup includes an inner stirrup and an outer stirrup. The inner stirrup and the outer stirrup are respectively arranged on the inner and outer sides of the main reinforcement bars and are fixed into an integral structure by binding wires.

[0004] Although the stirrups and main reinforcement bars in the existing reinforced concrete cast-in-place pile foundation are connected into an integral body by binding wires, in the actual construction process, due to the large number of connection points between the stirrups and the main reinforcement bars, manual binding of the binding wires is required, which not only increases the labor intensity but also easily causes the phenomenon of missed binding or less binding, resulting in a reduction in the connection strength between the stirrups and the main reinforcement bars.

[0005] Therefore, in view of the above current situation, there is an urgent need to develop a reinforced concrete cast-in-place pile foundation to overcome the deficiencies in the current practical applications. Summary of the Invention

[0006] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the present invention is to provide a reinforced concrete cast-in-place pile foundation to solve the problems in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A reinforced concrete cast-in-place pile foundation includes main reinforcement bars, an outer stirrup, and an inner stirrup. The main reinforcement bars are arranged in a circular pattern at equal intervals, and two main reinforcement bars on the same vertical plane are connected into an integral body through a connecting sleeve. The inner stirrup is located inside the main reinforcement bars, and the inner stirrup is a circular ring-shaped column with a circular cross-section. The outer stirrup is located outside the main reinforcement bars, and the outer stirrup is a spiral stirrup. It further includes:

[0009] A fixing mechanism, the fixing mechanism comprising an external fixing component and an internal fixing component, the internal fixing component is located on the inner side of the main reinforcement and connected to the inner stirrup, the external fixing component is located on the outer side of the main reinforcement and connected to the outer stirrup, and the distribution quantity and distribution position of the internal fixing component and the external fixing component are consistent with the distribution quantity and distribution position of the main reinforcement, both ends of the external fixing component are provided with elbows, the elbows are bent in a direction close to the outer stirrup, and the bending width of the elbows is less than the diameter of the outer stirrup;

[0010] A connecting assembly, wherein the connecting assembly is circumferentially distributed on the outside of the outer stirrup, one end of the connecting assembly is fixed to the outer wall of the middle part of the outer fixing assembly by a top screw, the other end of the connecting assembly passes through the outer stirrup and is respectively connected to the main reinforcement and the inner fixing assembly, the other end of the connecting assembly is frictionally connected to the outer walls on both sides of the main reinforcement, the other end of the connecting assembly is connected to the inner fixing assembly by a connecting bolt, and second connecting holes matching with the connecting bolts are distributed on both sides of one end of the inner fixing assembly;

[0011] Adjust the position of the elbows at both ends of the external fixing component and move them to a position close to the connecting sleeve. The two elbows constrain the outer stirrups distributed between the two connecting sleeves. The connecting component connects the inner fixing component and the outer fixing component as a whole and connects the outer stirrups and the inner stirrups as a whole by cooperating with the top screw and the connecting bolt. The connecting component drives the outer stirrups and the main reinforcement to move and tightly contacts the outer stirrups, the main reinforcement and the inner stirrups by adjusting the connection position of the connecting bolt and the second connecting hole.

[0012] As a further technical solution of the present invention, the connection assembly includes:

[0013] A connector circumferentially distributed on the outside of the outer stirrup, wherein the connector is provided with a first groove and a second groove in sequence from the outside to the inside, wherein the first groove matches with the outer wall of the middle portion of the outer fixing component, and the second groove matches with the outer wall of the main reinforcement, wherein one end of the connector is connected to the outer fixing component via a top screw, and the other end of the connector is set as an open structure, and the other end of the connector extends to the inner side of the main reinforcement; and

[0014] The connecting columns are fixed on both sides of one end of the connecting piece opening, the connecting columns are located on one side of the inner fixing assembly, and the connecting columns are provided with first connecting holes matched with the connecting bolts.

[0015] As a further technical solution of the present invention, the connecting piece adopts an X-shaped sheet structure, and the connecting piece is made of a material with good elasticity, corrosion resistance and high temperature resistance.

[0016] As a further technical solution of the present invention, the external fixation assembly comprises:

[0017] Mounting columns distributed on the outside of the main reinforcement bars. An installation groove is provided on one side of the mounting column. A vertical strip groove, a horizontal strip groove, a limiting hole, and a locking hole are successively provided on the other side of the mounting column. Both the vertical strip groove and the horizontal strip groove communicate with the installation groove. The horizontal strip grooves are equidistantly distributed on one side of the vertical strip groove and all communicate with it. The limiting holes are equidistantly distributed on both sides of the vertical strip groove. The locking hole is matched with a setscrew;

[0018] A fixing member slidably installed in the installation groove. One end of the fixing member is provided with an elbow;

[0019] A sliding column fixed to the other end of the fixing member. The sliding column is slidably matched with the horizontal strip groove and the vertical strip groove respectively; and

[0020] A limiting member matched with the limiting hole. The limiting member intermittently abuts against the sliding column.

[0021] As a further technical solution of the present invention, the mounting column adopts a columnar structure with a crescent-shaped cross-section. The installation groove is eccentric with the mounting column. The outer wall of one side of the fixing member protrudes outside the mounting column and effectively abuts against the outer stirrup. The fixing member adopts an L-shaped columnar structure with a circular cross-section. The limiting member adopts a U-shaped strip structure. The diameters of both ends of the limiting member are smaller than the diameter of the limiting hole. The middle part of the limiting member is provided with an arc structure, and its radian is the same as the radian of the outer wall of the mounting column.

[0022] As a further technical solution of the present invention, the inner fixing assembly includes:

[0023] Fixing cylinders circumferentially distributed on the outside of the inner stirrup. One side of the fixing cylinder is open. A fixing groove connected to the inner stirrup is provided inside the fixing cylinder; and

[0024] Fixing wing plates fixed at the upper and lower ends of the open side of the fixing cylinder. Second connection holes matched with connection bolts are distributed at both ends of the fixing wing plate. A third groove that abuts against the outer wall of the main reinforcement bar is provided in the middle of the fixing wing plate. The distance between the two fixing wing plates is greater than the height of the connecting column.

[0025] As a further technical solution of the present invention, the fixing cylinder adopts an arc-shaped cylindrical structure, and the radian of the fixing cylinder is the same as the radian of the inner stirrup. The radian of the fixing groove is also the same as the radian of the inner stirrup. The third groove completes the three-point clamping and positioning of the main reinforcement bar by cooperating with the second groove.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] Adjust the positions of the elbows on both ends of the external fixing assembly so that both elbows are moved to positions close to the connecting sleeves, and constrain the external stirrups distributed between the two connecting sleeves between the two elbows. This not only limits the position of the external stirrups between the two connecting sleeves, so that they are stably located outside the main reinforcement while meeting the number of distribution turns, thereby ensuring the structural strength of the cast-in-place pile, but also facilitates the extrusion of the external stirrups between the two connecting sleeves so that they fully and effectively collide with the outer wall of the main reinforcement, thereby supporting the main reinforcement and improving the structural strength of the cast-in-place pile.

[0028] The connecting component can not only connect the inner fixing component and the outer fixing component as a whole by cooperating with the top screw and the connecting bolt, thereby connecting the outer stirrups and the inner stirrups as a whole, but also drive the outer stirrups and the main reinforcement to move by adjusting the connection position of the connecting bolt and the second connecting hole, so that the outer stirrups, the main reinforcement and the inner stirrups are closely in contact with each other, thereby increasing the friction between each other, thereby improving the connection stability between the outer stirrups, the main reinforcement and the inner stirrups. This method of fixing the outer stirrups, the main reinforcement and the inner stirrups replaces the traditional manual fixing method of binding wire, which not only simplifies the construction process, speeds up the progress of the project, reduces labor intensity and the possibility of human dislocation, and realizes the function of reducing costs and increasing efficiency, but also facilitates the orderly classification, dismantling and recycling of the outer stirrups, the main reinforcement and the inner stirrups during future maintenance or renovation, which is in line with the concept of sustainable development and reduces resource waste and environmental pollution.

[0029] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a reinforced concrete cast-in-place pile foundation provided in an embodiment of the present invention.

[0031] Figure 2 A structural front view of a reinforced concrete cast-in-place pile foundation provided by an embodiment of the present invention.

[0032] Figure 3 A top view of the structure of a reinforced concrete cast-in-place pile foundation provided by an embodiment of the present invention.

[0033] Figure 4 for Figure 3 An enlarged view of the structure of the middle connection component and the internal fixation component.

[0034] Figure 5 for Figure 4 Structural exploded view of the connecting component and the internal fixation component.

[0035] Figure 6 for Figure 2Enlarged view of the structure of the local Chinese and foreign fixing components.

[0036] Figure 7 is Figure 1 An enlarged view of the structure at location A in

[0037] Figure 8 is Figure 2 An enlarged view of the structure at location B in

[0038] Reference numerals: 100 - main reinforcement, 200 - outer stirrup, 300 - inner stirrup, 400 - connecting component, 410 - connecting piece, 420 - first groove, 430 - second groove, 440 - connecting column, 450 - first connection hole, 500 - outer fixing component, 510 - mounting column, 520 - mounting groove, 530 - vertical strip groove, 540 - horizontal strip groove, 550 - limiting hole, 560 - locking hole, 570 - limiting piece, 580 - fixing piece, 590 - sliding column, 600 - inner fixing component, 610 - fixing cylinder, 620 - fixing groove, 630 - fixing wing plate, 640 - second connection hole, 650 - third groove, 700 - connecting sleeve, 800 - connecting bolt. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0041] As Figures 1 to 8 shown, as a reinforced concrete cast-in-place pile foundation provided by an embodiment of the present invention, it includes a main reinforcement 100, an outer stirrup 200 and an inner stirrup 300. The main reinforcements 100 are arranged in a circular pattern at equal intervals, and two main reinforcements 100 on the same vertical plane are connected into a whole through a connecting sleeve 700. The inner stirrup 300 is located inside the main reinforcement 100. The inner stirrup 300 preferably adopts an annular column with a circular cross-section. The outer stirrup 200 is located outside the main reinforcement 100, and the outer stirrup 200 preferably adopts a spiral stirrup. It further includes:

[0042] A fixing mechanism, the fixing mechanism comprising an external fixing assembly 500 and an internal fixing assembly 600, the internal fixing assembly 600 is located on the inner side of the main reinforcement 100 and connected to the inner stirrup 300, the external fixing assembly 500 is located on the outer side of the main reinforcement 100 and connected to the outer stirrup 200, and the distribution quantity and distribution position of the internal fixing assembly 600 and the external fixing assembly 500 are consistent with the distribution quantity and distribution position of the main reinforcement 100, both ends of the external fixing assembly 500 are provided with elbows, the elbows are bent in a direction close to the outer stirrup 200, and the bending width of the elbows is slightly smaller than the diameter of the outer stirrup 200;

[0043] A connecting assembly 400, wherein the connecting assembly 400 is circumferentially distributed on the outside of the outer stirrup 200, one end of the connecting assembly 400 is fixed to the outer wall of the middle part of the outer fixing assembly 500 by a top screw, the other end of the connecting assembly 400 passes through the outer stirrup 200 and is respectively connected to the main reinforcement 100 and the inner fixing assembly 600, the other end of the connecting assembly 400 is frictionally connected to the outer walls on both sides of the main reinforcement 100, the other end of the connecting assembly 400 is connected to the inner fixing assembly 600 by a connecting bolt 800, and second connecting holes 640 matching with the connecting bolt 800 are distributed on both sides of one end of the inner fixing assembly 600;

[0044] Adjust the positions of the elbows on both ends of the external fixing assembly 500 so that both elbows are moved to positions close to the connecting sleeves 700, and constrain the outer stirrups 200 distributed between the two connecting sleeves 700 between the two elbows. This not only limits the position of the outer stirrups 200 between the two connecting sleeves 700, so that they are stably located outside the main reinforcement 100 while meeting the number of distribution turns, thereby ensuring the structural strength of the cast-in-place pile, but also facilitates the extrusion of the outer stirrups 200 between the two connecting sleeves 700, so that they fully and effectively collide with the outer wall of the main reinforcement 100, thereby playing a role in supporting the main reinforcement 100 and improving the structural strength of the cast-in-place pile.

[0045] The connecting component 400, by cooperating with the setscrew and the connecting bolt 800, can not only connect the inner fixing component 600 and the outer fixing component 500 into a whole, thereby connecting the outer stirrup 200 and the inner stirrup 300 into a whole, but also drive the outer stirrup 200 and the main reinforcement 100 to move by adjusting the connection position between the connecting bolt 800 and the second connection hole 640, so that the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300 are tightly abutted against each other, increasing the friction force between them, thereby improving the connection stability among the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300. This way of fixing the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300 replaces the traditional manual tying method with binding wire. It not only simplifies the construction process, speeds up the project progress, reduces the labor intensity and the possibility of human dislocation, realizes the function of cost reduction and efficiency increase, but also facilitates the orderly classified demolition and recycling of the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300 during future maintenance or renovation, conforms to the concept of sustainable development, and reduces resource waste and environmental pollution.

[0046] In this embodiment, the diameters of the main reinforcements 100 are all larger than the diameters of the outer stirrups 200 and the inner stirrups 300, and the diameters of the outer stirrups 200 and the inner stirrups 300 can be the same or different.

[0047] As Figures 3 to 5 shown, as a preferred embodiment of the present invention, the connecting component 400 includes a connecting piece 410, a first groove 420, a second groove 430, a connecting column 440 and a first connection hole 450. The connecting pieces 410 are circumferentially distributed on the outer side of the outer stirrup 200. The first groove 420 and the second groove 430 are sequentially arranged on the connecting piece 410 from outside to inside. The first groove 420 cooperates with the outer wall of the middle part of the outer fixing component 500, and the second groove 430 cooperates with the outer wall of the main reinforcement 100. One end of the connecting piece 410 is connected to the outer fixing component 500 through a setscrew. The other end of the connecting piece 410 is an open structure, and the other end of the connecting piece 410 extends to the inner side of the main reinforcement 100. Connecting columns 440 are fixed on both sides of the open end of the connecting piece 410. The connecting columns 440 are located on one side of the inner fixing component 600. The connecting columns 440 are provided with first connection holes 450 that cooperate with the connecting bolts 800.

[0048] As Figures 3 to 5 shown, as a preferred embodiment of the present invention, the connecting piece 410 preferably adopts a U-shaped sheet structure, and the connecting piece 410 is preferably made of a material with good elasticity, corrosion resistance and high temperature resistance.

[0049] As Figures 3 to 5As shown, as a preferred embodiment of the present invention, the diameter of the second groove 430 is greater than that of the first groove 420. During the process of the connecting column 440 cooperating with the second connection holes 640 at different positions, although the diameters of both the first groove 420 and the second groove 430 will change, it can still ensure that the first groove 420 and the second groove 430 can always clamp the main reinforcement 100, making it stable within the connecting member 410, thereby ensuring the connection stability among the main reinforcement 100, the outer stirrup 200, and the inner stirrup 300.

[0050] In this embodiment, the unopened end of the connecting member 410 is locked to the outer fixing assembly 500 by a setscrew. The connecting column 440 is connected to the second connection holes 640 on the inner fixing assembly 600 through the first connection holes 450 and the connecting bolts 800, thereby locking the opened end of the connecting member 410 to the inner fixing assembly 600, connecting the outer stirrup 200 and the inner stirrup 300 into a whole, and at the same time ensuring that the main reinforcement 100 is located within the connecting member 410 and is in frictional connection with the second groove 430;

[0051] By cooperating with the second connection holes 640 at different positions, the connecting bolts 800 can expand the opened end of the connecting member 410, reducing the distance between the unopened end and the opened end of the connecting member 410. Since the position of the inner fixing assembly 600 remains unchanged all the time, the position of the opened end of the connecting member 410 remains unchanged, while the unopened end of the connecting member 410 will drive the outer fixing assembly 500 and the main reinforcement 100 to move towards the direction close to the inner stirrup 300. The outer fixing assembly 500 drives the outer stirrup 200 to move, so that the outer stirrup 200, the main reinforcement 100, and the inner stirrup 300 are tightly abutted against each other, increasing the friction force between them, thereby improving the connection stability among the outer stirrup 200, the main reinforcement 100, and the inner stirrup 300. This way of fixing the outer stirrup 200, the main reinforcement 100, and the inner stirrup 300 replaces the traditional manual bundling and tying method. It not only simplifies the construction process, speeds up the project progress, reduces the labor intensity and the possibility of human dislocation, realizes the function of cost reduction and efficiency increase, but also facilitates the orderly classified demolition and recycling of the outer stirrup 200, the main reinforcement 100, and the inner stirrup 300 during future maintenance or renovation, conforms to the concept of sustainable development, and reduces resource waste and environmental pollution.

[0052] In a preferred embodiment, the connecting member 410, the connecting column 440, and the first connection holes 450 all preferably adopt an integrally formed manufacturing method, which can ensure the connection strength between the connecting member 410 and the connecting column 440, thereby improving the structural strength of the cast-in-place pile foundation.

[0053] As Figures 2 to 8As shown, as a preferred embodiment of the present invention, the external fixing assembly 500 includes a mounting post 510, a mounting groove 520, a vertical strip groove 530, a horizontal strip groove 540, a limiting hole 550, a locking hole 560, a limiting member 570, a fixing member 580 and a sliding column 590. The mounting posts 510 are distributed on the outer side of the main reinforcement 100. An installation groove 520 for slidably installing the fixing member 580 is formed on one side of the mounting post 510. A vertical strip groove 530, a horizontal strip groove 540, a limiting hole 550 and a locking hole 560 are successively formed on the other side of the mounting post 510. Both the vertical strip groove 530 and the horizontal strip groove 540 communicate with the mounting groove 520. The horizontal strip grooves 540 are equidistantly distributed on one side of the vertical strip groove 530 and all communicate with it. Both the horizontal strip groove 540 and the vertical strip groove 530 are slidably engaged with a sliding column 590 fixed to one end of the fixing member 580. The limiting holes 550 are equidistantly distributed on both sides of the vertical strip groove 530. The limiting holes 550 cooperate with the limiting members 570. The limiting members 570 intermittently abut against the sliding column 590. The locking holes 560 cooperate with the set screws.

[0054] As Figures 2 to 8 As shown, as a preferred embodiment of the present invention, the mounting post 510 preferably adopts a columnar structure with a crescent cross-section. The mounting groove 520 is eccentric with respect to the mounting post 510, so as to ensure that the outer wall of one side of the fixing member 580 protrudes outside the mounting post 510 and effectively abuts against the outer stirrup 200. The fixing member 580 preferably adopts a columnar structure with a circular cross-section and an L shape. One end of the fixing member 580 is provided with an elbow. The limiting member 570 preferably adopts a U-shaped strip structure. The diameters of both ends of the limiting member 570 are slightly smaller than the diameter of the limiting hole 550, so as to ensure that the limiting member 570 can be stably placed in the limiting hole 550, thereby completing the limiting function. The middle part of the limiting member 570 is set as an arc structure, and its radian is the same as the radian of the outer wall of the mounting post 510, so as to ensure that the limiting member 570 closely adheres to the outer wall of the mounting post 510, further increasing the stability of the limiting member 570 in the limiting hole 550, and thus improving the stability and durability of the fixing member 580 in restraining the outer stirrup 200.

[0055] In this embodiment, the connecting member 410 can be connected to the mounting post 510 as a whole through a setscrew and the locking hole 560 on the mounting post 510. The fixing member 580 can adjust the position of its elbows by moving in the vertical strip groove 530, so that both elbows move to a position close to the connecting sleeve 700, and the outer stirrup 200 distributed between the two connecting sleeves 700 is constrained between the two elbows. In this way, not only can the position of the outer stirrup 200 between the two connecting sleeves 700 be restricted, so that it is stably located outside the main reinforcement 100 while meeting the distribution turns, ensuring the structural strength of the cast-in-place pile, but also it is convenient to extrude the outer stirrup 200 between the two connecting sleeves 700, so that it fully and effectively abuts against the outer wall of the main reinforcement 100, thereby playing a role in supporting the main reinforcement 100 and improving the structural strength of the cast-in-place pile;

[0056] After the position of the elbows is adjusted, the sliding column 590 is moved into the transverse strip groove 540 at a specified height. The transverse strip groove 540 can temporarily limit the fixing member 580 by cooperating with the sliding column 590 to ensure that it will not shift temporarily. Then, the two limiting members 570 are respectively connected to the limiting holes 550 distributed at the upper and lower ends of the transverse strip groove 540 at a specified height, so as to block the vertical strip groove 530 at the specified height position, so that the sliding column 590 cannot move vertically normally, thereby ensuring that the fixing member 580 can be stable at the specified height, so that the outer stirrup 200 in the fixing member 580 is stably located outside the main reinforcement 100 while meeting the distribution turns, ensuring the structural strength of the cast-in-place pile.

[0057] As Figures 2 to 5 shown, as a preferred embodiment of the present invention, the internal fixing assembly 600 includes a fixing cylinder 610, a fixing groove 620, fixing wing plates 630 and a third groove 650. The fixing cylinder 610 is circumferentially distributed outside the inner stirrup 300. One side of the fixing cylinder 610 is open. A fixing groove 620 connected to the inner stirrup 300 is opened inside the fixing cylinder 610. Fixing wing plates 630 are fixed at both the upper and lower ends of the open side of the fixing cylinder 610. Second connection holes 640 cooperating with the connecting bolts 800 are distributed at both ends of the fixing wing plate 630, and a third groove 650 abutting against the outer wall of the main reinforcement 100 is opened in the middle of the fixing wing plate 630. The distance between the two fixing wing plates 630 is greater than the height of the connecting column 440, ensuring that the connecting column 440 can quickly and fully enter between the two fixing wing plates 630 and increasing its connection area with the fixing wing plates 630.

[0058] As Figures 2 to 5As shown, as a preferred embodiment of the present invention, the fixing tube 610 preferably adopts an arc-shaped cylindrical structure, and the curvature of the fixing tube 610 is consistent with the curvature of the inner hoop 300. Similarly, the fixing groove 620 is also a groove body with a curvature, and its curvature is also consistent with the curvature of the inner hoop 300. The third groove 650 can complete the three-point clamping and positioning of the main reinforcement 100 by cooperating with the second groove 430, ensuring that the main reinforcement 100 in the cast-in-place pile is evenly distributed, improving the structural strength of the cast-in-place pile foundation, and further improving the structural strength of the cast-in-place pile.

[0059] In this embodiment, when the connecting bolt 800 is matched with the second connecting hole 640 at different positions, the connecting bolt 800 can squeeze the two fixing wing plates 630, causing them to deform to a certain extent and collide with the upper and lower ends of the connecting column 440, thereby increasing the connection area between the connecting column 440 and the connecting member 410, thereby improving the connection stability of the inner stirrup 300 and the outer stirrup 200;

[0060] At the same time, since the inner hoop reinforcement 300 is a closed annular structure and can ensure that the horizontal positions of the fixed tube 610 and the fixed wing plate 630 remain unchanged, when the connecting bolt 800 cooperates with the second connecting hole 640 at a different position, the connecting bolt 800 can only apply an external force to the connecting piece 410 and drive one end of it to move, thereby driving the main reinforcement 100 and the outer hoop reinforcement 200 to move toward the inner hoop reinforcement 300, and then completing the connection between the main reinforcement 100, the outer hoop reinforcement 200 and the inner hoop reinforcement 300, thereby improving the structural strength of the cast-in-place pile foundation.

[0061] In a preferred embodiment, the fixing cylinder 610 , the fixing wing plate 630 , the fixing groove 620 , the second connecting hole 640 and the third groove 650 may be manufactured in an integrally formed manner.

[0062] The working principle of the present invention is:

[0063] The connecting piece 410 can be connected to the mounting post 510 as a whole through a setscrew and a locking hole 560 on the mounting post 510. The fixing piece 580 can adjust the position of its elbow by moving in the vertical strip groove 530, so that both elbows move to a position close to the connecting sleeve 700, and the outer stirrup 200 distributed between the two connecting sleeves 700 is constrained between the two elbows. In this way, not only can the position of the outer stirrup 200 between the two connecting sleeves 700 be restricted, so that it is stably located outside the main reinforcement 100 while meeting the distribution turns, ensuring the structural strength of the cast-in-place pile, but also it is convenient to extrude the outer stirrup 200 between the two connecting sleeves 700, so that it fully and effectively abuts against the outer wall of the main reinforcement 100, thereby playing a role in supporting the main reinforcement 100 and improving the structural strength of the cast-in-place pile;

[0064] After the position of the elbow is adjusted, the sliding column 590 is moved into the transverse strip groove 540 at a specified height. The transverse strip groove 540 can temporarily limit the fixing piece 580 by cooperating with the sliding column 590 to ensure that it will not shift briefly. Then, the two limiting pieces 570 are respectively connected to the limiting holes 550 distributed at the upper and lower ends of the transverse strip groove 540 at a specified height, so as to block the vertical strip groove 530 at the specified height position, so that the sliding column 590 cannot move vertically normally, thereby ensuring that the fixing piece 580 can be stable at the specified height, so that the outer stirrup 200 in the fixing piece 580 is stably located outside the main reinforcement 100 while meeting the distribution turns;

[0065] The non-open end of the connecting piece 410 is locked on the mounting post 510 through a setscrew. The connecting column 440 is connected to the second connecting hole 640 on the fixed wing plate 630 through the first connecting hole 450 and the connecting bolt 800, so as to lock the open end of the connecting piece 410 on the fixed wing plate 630, thereby connecting the outer stirrup 200 and the inner stirrup 300 as a whole, and at the same time ensuring that the main reinforcement 100 is located inside the connecting piece 410 and is frictionally connected to the second groove 430;

[0066] By means of the connection bolt 800 cooperating with the second connection holes 640 at different positions, the open end of the connecting member 410 can be expanded, so that the distance between the non-open end and the open end of the connecting member 410 is reduced. Since the inner stirrup 300 is a closed ring structure and can ensure that the horizontal positions of the fixing cylinder 610 and the fixing wing plate 630 remain unchanged all the time, the position of the open end of the connecting member 410 remains unchanged all the time, while the non-open end of the connecting member 410 will drive the outer fixing assembly 500 and the main reinforcement 100 to move towards the direction close to the inner stirrup 300. The outer fixing assembly 500 drives the outer stirrup 200 to move, so that the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300 are tightly abutted against each other, increasing the friction force between them, thereby improving the connection stability among the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300. This way of fixing the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300 replaces the traditional manual way of tying wire, which not only simplifies the construction process, speeds up the project progress, reduces the labor intensity and the possibility of human dislocation, realizes the function of cost reduction and efficiency increase, but also facilitates the orderly classified demolition and recycling of the outer stirrup 200, the main reinforcement 100 and the inner stirrup 300 during future maintenance or renovation, conforms to the concept of sustainable development, and reduces resource waste and environmental pollution;

[0067] The above is the working principle of the reinforced concrete cast-in-place pile foundation.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A reinforced concrete cast-in-place pile foundation, comprising main reinforcement bars, outer stirrups and inner stirrups. The main reinforcement bars are arranged in a circular pattern at equal intervals, and two main reinforcement bars on the same vertical plane are connected as a whole through a connecting sleeve. The inner stirrups are located inside the main reinforcement bars, and the inner stirrups are an annular cylinder with a circular cross-section. The outer stirrups are located outside the main reinforcement bars, and the outer stirrups are a spiral stirrup. It is characterized in that, Further comprising: A fixing mechanism, the fixing mechanism includes an outer fixing component and an inner fixing component. The inner fixing component is located inside the main reinforcement bars and is connected to the inner stirrups. The outer fixing component is located outside the main reinforcement bars and is connected to the outer stirrups. And the distribution quantity and distribution position of the inner fixing component and the outer fixing component are both consistent with those of the main reinforcement bars. Both ends of the outer fixing component are provided with elbows, and the elbows are bent towards the direction close to the outer stirrups. The bending width of the elbows is smaller than the diameter of the outer stirrups; A connecting component, the connecting component is circumferentially distributed outside the outer stirrups. One end of the connecting component is fixed on the outer wall of the middle part of the outer fixing component through a setscrew. The other end of the connecting component passes through the outer stirrups and is respectively connected to the main reinforcement bars and the inner fixing component. The other end of the connecting component is in frictional connection with the outer walls on both sides of the main reinforcement bars. The other end of the connecting component is connected to the inner fixing component through a connecting bolt. And on both sides of one end of the inner fixing component, there are second connecting holes that cooperate with the connecting bolts; Adjust the positions of the elbows at both ends of the outer fixing component and move them to a position close to the connecting sleeve. The two elbows restrain the outer stirrups distributed between the two connecting sleeves. The connecting component connects the inner fixing component and the outer fixing component into a whole and connects the outer stirrups and the inner stirrups into a whole by cooperating with the setscrew and the connecting bolt. The connecting component drives the outer stirrups and the main reinforcement bars to move and makes the outer stirrups, the main reinforcement bars and the inner stirrups tightly abut against each other by adjusting the connecting position of the connecting bolt and the second connecting hole; The connecting component includes: Connecting pieces circumferentially distributed outside the outer stirrups. On the connecting pieces, there are a first groove and a second groove arranged from outside to inside in sequence. The first groove cooperates with the outer wall of the middle part of the outer fixing component. The second groove cooperates with the outer wall of the main reinforcement bars. One end of the connecting piece is connected to the outer fixing component through a setscrew. The other end of the connecting piece is of an open structure, and the other end of the connecting piece extends to the inside of the main reinforcement bars; and Connecting columns fixed on both sides of the open end of the connecting piece. The connecting columns are located on one side of the inner fixing component. On the connecting columns, there are first connecting holes that cooperate with the connecting bolts; The outer fixing component includes: Mounting columns distributed outside the main reinforcement bars. On one side of the mounting columns, there are mounting grooves. On the other side of the mounting columns, there are a vertical strip groove, a horizontal strip groove, a limiting hole and a locking hole arranged in sequence. The vertical strip groove and the horizontal strip groove are both communicated with the mounting groove. The horizontal strip grooves are equidistantly distributed on one side of the vertical strip groove and are all communicated with it. The limiting holes are equidistantly distributed on both sides of the vertical strip groove. The locking hole cooperates with the setscrew; A fixing piece slidably mounted in the mounting groove. One end of the fixing piece is provided with an elbow; A sliding column fixed on the other end of the fixing piece. The sliding column is slidably matched with the horizontal strip groove and the vertical strip groove respectively; and A limiting piece that cooperates with the limiting hole. The limiting piece intermittently abuts against the sliding column; The installation column adopts a columnar structure with a crescent-shaped cross-section. The installation groove is eccentric with the installation column. The outer wall of one side of the fixing piece protrudes outside the installation column and effectively abuts against the outer stirrup. The fixing piece adopts an L-shaped columnar structure with a circular cross-section. The limiting piece adopts a U-shaped strip structure. The diameters of both ends of the limiting piece are smaller than the diameter of the limiting hole. The middle part of the limiting piece is set as an arc structure, and its radian is consistent with the radian of the outer wall of the installation column.

2. The reinforced concrete cast-in-place pile foundation according to claim 1, characterized in that, The connecting piece adopts a sheet structure in the shape of a capital "J", and the connecting piece is made of a material with good elasticity, corrosion resistance and high temperature resistance.

3. The cast-in-place reinforced concrete pile foundation according to claim 1, wherein The inner fixing assembly includes: A fixing cylinder circumferentially distributed outside the inner stirrup. One side of the fixing cylinder is open. A fixing groove connected to the inner stirrup is opened inside the fixing cylinder; and Fixing wing plates fixed at the upper and lower ends of the open side of the fixing cylinder. Second connection holes matched with the connecting bolts are distributed at both ends of the fixing wing plate. A third groove abutting against the outer wall of the main reinforcement is opened in the middle of the fixing wing plate. The distance between the two fixing wing plates is greater than the height of the connecting column.

4. The cast-in-place reinforced concrete pile foundation according to claim 3, characterized in that, The fixing cylinder adopts an arc-shaped cylindrical structure, and the radian of the fixing cylinder is consistent with the radian of the inner stirrup. The radian of the fixing groove is also consistent with the radian of the inner stirrup. The third groove completes the three-point clamping and positioning of the main reinforcement by cooperating with the second groove.

Images