Fabricated connecting structure of tubular pile and bearing platform

Abstract

The utility model relates to an assembly type connecting structure of a tubular pile and a bearing platform, and belongs to the technical field of civil engineering. Comprising a prefabricated pipe pile and a prefabricated bearing platform, an end plate is fixedly connected to the top end of the prefabricated pipe pile, a reinforcement cage is fixedly connected into the prefabricated bearing platform, a bearing platform reserved hole penetrating from top to bottom is formed in the prefabricated bearing platform, a plurality of connecting plates are fixedly connected to the upper surface of the end plate, and anchoring steel bars are fixedly connected to the connecting plates; during assembly, the bearing platform reserved hole is aligned with the anchoring steel bar, and the space formed by the bearing platform reserved hole and the anchoring steel bar is filled with concrete grouting materials. Compared with a heavy excavation foundation and a cast-in-place bearing platform, the influence of construction on the surrounding environment is reduced, the work of on-site formwork erecting, reinforcing steel bar binding, stirring and large-volume concrete pouring is reduced, the time for waiting for curing of large-volume concrete does not exist, and the construction period is shortened to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to an assembled connection structure of a pipe pile and a cap. Background Art

[0002] Pile foundations are deep foundations consisting of pipe piles and a cap. Currently, pile foundation construction sites primarily utilize an excavation-based foundation with on-site concrete pouring. This involves first driving pipe piles vertically into the foundation, and then pouring the cap atop the piles. This method of pile foundation construction requires on-site formwork erection, steel tying, reinforcement for the pile cap, mixing, and large-scale concrete pouring. This method carries disadvantages such as high overall cost, extensive excavation, large pouring volumes, long construction periods, and environmental risks. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an assembled connection structure of a pipe pile and a cap.

[0004] The technical solution of the utility model is as follows:

[0005] A prefabricated connection structure of pipe piles and caps comprises prefabricated pipe piles and prefabricated caps, wherein the top of the prefabricated pipe piles is fixedly connected to an end plate, the interior of the prefabricated caps is fixedly connected to a steel cage, prefabricated caps are provided with cap reserved holes that pass through from top to bottom, a plurality of connecting plates are fixedly connected to the upper surface of the end plates, and anchor steel bars are fixedly connected to the connecting plates. During assembly, the cap reserved holes are aligned with the anchor steel bars, and the space formed by the cap reserved holes and the anchor steel bars is filled with concrete grouting material.

[0006] Optionally, the hole wall of the reserved hole in the foundation is corrugated.

[0007] Optionally, at least one grouting channel is reserved at the bottom of one side of the prefabricated pedestal, and the grouting channel is connected from one side of the prefabricated pedestal to the reserved hole of the pedestal.

[0008] Optionally, a plurality of connecting plates are evenly distributed on the upper surface of the end plate.

[0009] Optionally, the concrete grouting material is UHPC.

[0010] Optionally, the end plate is welded to the connecting plate, and the anchoring steel bar is welded to the connecting plate.

[0011] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations.

[0012] By means of the above solution, the beneficial effects of the present invention are as follows:

[0013] By arranging precast pipe piles and precast pedestals, and opening pedestal pre-holes that run through from top to bottom on the precast pedestal, during assembly, the connecting plate is welded to the end plate at the top of the precast pipe pile, and the anchor steel bar is welded to the connecting plate, and the pedestal pre-holes of the precast pedestal are aligned with the anchor steel bar and then hoisted. After the precast pedestal is installed to the corresponding position, concrete grouting material is filled in the pedestal pre-holes of the precast pedestal, and the assembled connection of the pipe pile and the pedestal is completed. Compared with large excavation foundation and cast-in-place pedestal, the utility model adopts precast pipe piles and precast pedestal, and adopts assembled connection, which reduces the impact of construction on the surrounding environment, reduces the work of on-site formwork, tying steel bars, mixing and large-volume concrete pouring, and also eliminates the time for waiting for large-volume concrete curing, reduces the amount of concrete pouring on site, greatly shortens the construction period, reduces construction costs, and improves the mechanized construction efficiency and foundation quality level of the line foundation.

[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the main view of the present utility model.

[0016] Figure 2 It is a top view of the present utility model.

[0017] The accompanying drawings are:

[0018] 1- reserved holes for the pedestal, 2- precast pedestal, 3- anchoring steel bars, 4- connecting plate, 5- steel cage, 6- grouting channel, 7- end plate, 8- precast pipe piles. DETAILED DESCRIPTION

[0019] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] like Figure 1 and Figure 2 As shown, the assembled connection structure of pipe piles and pedestals provided by the embodiment of the utility model includes a prefabricated pipe pile 8 and a prefabricated pedestal 2, the top of the prefabricated pipe pile 8 is fixedly connected to an end plate 7, the inside of the prefabricated pedestal 2 is fixedly connected to a steel cage 5, the prefabricated pedestal 2 is provided with a pedestal reserved hole 1 that passes through from top to bottom, a plurality of connecting plates 4 are fixedly connected to the upper surface of the end plate 7, and the connecting plates 4 are fixedly connected to the anchor steel bars 3. During assembly, the pedestal reserved holes 1 are aligned with the anchor steel bars 3, and the space formed by the pedestal reserved holes 1 and the anchor steel bars 3 is filled with concrete grouting material.

[0021] Specifically, the end plate 7 is welded to the connecting plate 4, and the anchoring steel bar 3 is welded to the connecting plate 4. The connecting plate 4 serves to connect the end plate 7 and the anchoring steel bar 3. The assembled connection method of the assembled connection structure of the pipe pile and the cap provided in this embodiment includes the following steps:

[0022] A. The prefabrication plant completes the manufacture of prefabricated pipe piles 8 of predetermined dimensions and prefabricated caps 2 with cap pre-holes 1. After the prefabricated components reach the designed strength, they are transported to the site. The pile bodies of the prefabricated pipe piles 8 are treated. After treatment, the prefabricated pipe piles 8 are hoisted and the verticality of the prefabricated pipe piles 8 is checked before being sunk. The prefabricated pipe piles 8 are driven into the ground to the designated location.

[0023] B. Drive the prefabricated pipe pile 8 into the predetermined position in the soil, weld the connecting plate 4 to the end plate 7 at the top of the prefabricated pipe pile 8, and weld the anchor steel bar 3 to the connecting plate 4. At this time, the welding position can be flexibly adjusted according to the pile position in the soil, which can make it easier to connect with the reserved hole 1 of the bearing platform;

[0024] C. After the welding of the connecting plate 4 and the anchoring steel bar 3 is completed, the reserved holes 1 of the prefabricated cap 2 are aligned with the anchoring steel bar 3 and then hoisted. After the prefabricated cap 2 is hoisted to the corresponding position, the reserved holes 1 of the prefabricated cap 2 are filled with concrete grouting material. At this point, the connection between the prefabricated cap 2 and the prefabricated pipe pile 8 is completed.

[0025] In another embodiment, the wall of the reserved hole 1 of the cap is corrugated. By setting the wall of the reserved hole 1 of the cap to be corrugated, the contact area between the concrete grouting material and the prefabricated cap 2 is increased.

[0026] In another embodiment, at least one grouting channel 6 is reserved at the bottom of one side of the precast cap 2, and the grouting channel 6 is connected from one side of the precast cap 2 to the cap reserved hole 1. In this embodiment, when concrete grouting material is filled in the cap reserved hole 1 of the precast cap 2, grouting is performed through the at least one grouting channel 6 to improve the density of the concrete grouting material, as well as improve the bonding strength and stability between the concrete grouting material area, the precast cap 2, and the anchor steel bar 3.

[0027] In another embodiment, a plurality of connecting plates 4 are evenly distributed on the upper surface of the end plate 7 to ensure uniform force.

[0028] In another embodiment, the concrete grouting material is UHPC. UHPC has higher bonding strength and shorter setting time, which improves the stability of the prefabricated connection structure while shortening the construction period.

[0029] In another embodiment, a plurality of reinforcing steel bars are evenly fixedly connected along the circumference of the interior of the prefabricated pipe pile 8. The reinforcing steel bars can improve the overall stability of the prefabricated pipe pile 8.

[0030] In another embodiment, both sides of the prefabricated pipe pile 8 and the prefabricated foundation 2 are fixedly connected with lifting connectors, and are connected to external equipment through the lifting connectors during lifting.

[0031] The assembled connection structure of the pipe pile and the cap provided by the utility model has the following characteristics:

[0032] (1) The use of the corrugated hole wall and UHPC reserved in the prefabricated pedestal not only increases the contact area between the concrete grouting material and the prefabricated pedestal 2, but also UHPC has higher bonding strength and shorter setting time, which improves the stability of the prefabricated connection structure while shortening the construction period.

[0033] (2) The traditional large excavation foundation and cast-in-place pedestal are replaced with prefabricated pipe piles 8 and prefabricated pedestal 2, which reduces the impact of construction on the surrounding environment, reduces the work of on-site formwork, tying steel bars, mixing and large-volume concrete pouring, and eliminates the need to wait for the curing time of large-volume concrete, thus greatly shortening the construction period.

[0034] (3) The use of an assembled connection structure makes the integrity of the structure almost the same as that of a cast-in-place structure. In addition, a larger-sized foundation reserved hole 1 is opened on the prefabricated foundation 2, which greatly reduces the difficulty of hole alignment during construction. While ensuring the stability of the connection, the construction accuracy requirements are low, the on-site construction difficulty is small, and the construction period is further shortened, the construction efficiency is improved, and the construction cost is saved.

[0035] (4) Currently, we have a mature prefabricated component processing technology, which ensures the quality and stability of prefabricated pipe piles 8, prefabricated pedestals 2 and other components prefabricated in the factory, further improving the construction quality.

[0036] (5) The connection joint is designed by welding the connecting plate 4 so that when the connecting plate 4 is welded on the end plate 7 of the prefabricated pipe pile 8 after piling, the position of the welded part can be flexibly changed according to the pile position so as to better dock with the reserved hole 1 of the pedestal on the prefabricated pedestal 2, thereby avoiding the problem that the pipe pile is restrained by the soil and cannot move freely after piling, resulting in the inability to accurately dock with the pedestal hole.

[0037] (6) The utility model has the advantages of high efficiency, speed, convenience and reliability.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An assembled connection structure of a pipe pile and a cap, characterized in that: The invention comprises a prefabricated pipe pile (8) and a prefabricated cap (2), wherein the top of the prefabricated pipe pile (8) is fixedly connected to an end plate (7), the interior of the prefabricated cap (2) is fixedly connected to a steel cage (5), a cap reserved hole (1) which passes through from top to bottom is provided on the prefabricated cap (2), a plurality of connecting plates (4) are fixedly connected to the upper surface of the end plate (7), and anchoring steel bars (3) are fixedly connected to the connecting plates (4), and during assembly, the cap reserved hole (1) is aligned with the anchoring steel bars (3), and the space formed by the cap reserved hole (1) and the anchoring steel bars (3) is filled with concrete grouting material.

2. The assembled connection structure of the pipe pile and the cap according to claim 1, characterized in that: The hole wall of the reserved hole (1) of the support platform is corrugated.

3. The assembled connection structure of the pipe pile and the cap according to claim 1, characterized in that: At least one grouting channel (6) is reserved at the bottom of one side of the prefabricated foundation (2), and the grouting channel (6) is connected from one side of the prefabricated foundation (2) to the reserved hole (1) of the foundation.

4. The assembled connection structure of the pipe pile and the cap according to claim 1, characterized in that: A plurality of connecting plates (4) are evenly distributed on the upper surface of the end plate (7).

5. The assembled connection structure of the pipe pile and the cap according to claim 1, characterized in that: The concrete grouting material is UHPC.

6. The assembled connection structure of the pipe pile and the cap according to claim 1, characterized in that: The end plate (7) is welded to the connecting plate (4), and the anchoring steel bar (3) is welded to the connecting plate (4).

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