Connecting joint of prefabricated pile and prefabricated stand column
By welding the end plates of the pile body and the column body, and using components such as steel cages and anchor steel bars to achieve anchor connections, the problems of complex and high cost of existing connection nodes are solved, and the reliability of the connection and simplicity of construction are improved.
Patent Information
- Application Number
- CN202420852532.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The connection nodes between existing prefabricated piles and prefabricated columns are complex in production, with many construction processes, high project cost, and excessive stress.
It provides a connection node between prefabricated piles and prefabricated columns. By welding the top end plate of the pile body to the bottom of the column body, and by setting up a steel cage and/or anchoring steel bars and fillers, the synergistic effect of the two connection methods of welding and anchoring are achieved.
It simplifies the production and construction process of connecting nodes, reduces the project cost, improves the reliability of connecting nodes, reduces the setting of mechanical joints, and makes the operation easier and faster.
Smart Images
Figure CN222822540U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of civil engineering construction, in particular to a connection node between a prefabricated pile and a prefabricated column. Background Art
[0002] The existing connection nodes between precast piles and precast columns can meet the force requirements of the foundation pit engineering column system and solve the force problem of the column system, but all connections and forces rely on the end plates of the precast piles to bear and transmit, and the force is too concentrated; at the same time, it was found in engineering tests and engineering applications that the production and construction of these connection nodes are relatively complicated, with many construction processes and high project costs.
[0003] Based on this, how to simplify the connection nodes to make the construction more convenient and the cost lower has become a technical problem that technical personnel in this field need to solve. Utility Model Content
[0004] The utility model aims to provide a connection node between a precast pile and a precast column, so as to solve the problems that the existing connection node is only subjected to force at one point of the precast pile end plate, is complicated to manufacture, has many construction steps and has high engineering cost.
[0005] In order to achieve the above-mentioned object, the utility model provides a connection node between a prefabricated pile and a prefabricated column, comprising: a pile body, a column body and a connection unit;
[0006] The top end plate of the pile body is welded to the bottom of the column body, and the pile body is anchored to the column body through the connection unit, wherein the connection unit includes a steel cage and / or anchor steel bars and fillers;
[0007] The steel cage is partially located inside the pile body and partially located inside the column body, and the filler is at least filled in the portion of the steel cage located inside the pile body and the portion of the steel cage located inside the column body.
[0008] Optionally, the connection unit includes the steel cage and the filler;
[0009] The steel cage is arranged along the axial direction of the pile body, with one end located inside the pile body and the other end located inside the column body.
[0010] Optionally, the steel cage is connected to the top end plate of the pile body to limit the axial position of the steel cage.
[0011] Optionally, the steel cage further comprises a support plate;
[0012] The supporting plate is arranged at one end located inside the pile body, and the diameter of the supporting plate is matched with the inner diameter of the pile body.
[0013] Optionally, the column body includes a precast hollow concrete steel pipe pile column, the precast hollow concrete steel pipe pile column is coaxially arranged with the pile body, and the outer diameter of the precast hollow concrete steel pipe pile column is matched with the outer diameter of the pile body.
[0014] Optionally, the connection unit includes the steel cage, the anchor steel bars and the filler;
[0015] The steel cage is arranged along the axial direction of the pile body, with one end located inside the pile body and the other end located inside the column body;
[0016] The anchor steel bar is arranged at the connection position between the pile body and the column body, and one end is connected to the top end plate of the pile body, and the other end is anchored in the filler inside the column body.
[0017] Optionally, the anchoring steel bars are arranged along the axial direction of the pile body.
[0018] Optionally, the column body includes a steel pipe, the steel pipe is coaxially arranged with the pile body, and the outer diameter of the steel pipe is matched with the outer diameter of the pile body.
[0019] Compared with the existing connection nodes between prefabricated piles and prefabricated columns, the connection nodes between prefabricated piles and prefabricated columns provided in the present application have the following advantages:
[0020] The connection node between the precast pile and the precast column provided in the present application is achieved by welding the top end plate of the pile body to the bottom of the column body, and by setting a steel cage and / or anchoring steel bars and pouring core concrete to achieve an anchor connection between the pile body and the column body, thereby achieving a synergistic effect of the two connection methods of welding and anchoring, and ensuring the reliability of the connection node; at the same time, the existing connection node between the precast pile and the precast column, by setting a sealing plate at the connection position of the precast pile and the column, and passing the anchor bolts through the sealing plate, although partial anchoring is achieved, the force points are relatively concentrated on the precast pile end plate. Compared with the existing technology, the connection node provided in this embodiment can reduce the setting of mechanical joints, simplify the process, reduce production costs, make the operation simpler and faster, and at the same time make the force reliability of the connection node between the precast pile and the precast column higher. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 A schematic diagram of the structure of a connection node between a first prefabricated pile and a prefabricated column provided in an embodiment of the utility model;
[0022] Figure 2A schematic diagram of the structure of a connection node between a second prefabricated pile and a prefabricated column provided in an embodiment of the utility model;
[0023] Figure 3 A schematic structural diagram of a third connection node between a prefabricated pile and a prefabricated column provided in an embodiment of the utility model;
[0024] Figure 4 A flow chart of a construction method for a connection node between a prefabricated pile and a prefabricated column provided in an embodiment of the utility model;
[0025] Figure 5 A schematic diagram of step S1 in the construction method of the connection node between the precast pile and the precast column provided in an embodiment of the utility model;
[0026] Figure 6 A schematic diagram of step S2 in the construction method of the connection node between the precast pile and the precast column provided in an embodiment of the utility model;
[0027] Figure 7 A schematic diagram of step S3 in the construction method of the connection node between the precast pile and the precast column provided in an embodiment of the utility model;
[0028] Figure 8 A schematic diagram of step S4 in the construction method of the connection node between the precast pile and the precast column provided in an embodiment of the utility model;
[0029] Fig. 9 A schematic diagram of step S5 in the construction method of the connection node between the precast pile and the precast column provided in an embodiment of the utility model;
[0030] The description of each reference numeral is as follows:
[0031] 10-pile body; 101-top end plate;
[0032] 20-column body;
[0033] 30-connection unit; 301-reinforcement cage; 302-anchoring reinforcement; 303-sealing plate; 3011-longitudinal main reinforcement; 3012-annular stirrups; 3013-support plate;
[0034] 40-filler;
[0035] X is the axial direction of the pile body; Y is the radial direction of the pile body. DETAILED DESCRIPTION
[0036] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.
[0037] As used in this specification, the singular forms "a", "an" and "the" include plural objects, the term "or" is generally used to include the meaning of "and / or", the term "several" is generally used to include the meaning of "at least one", and the term "at least two" is generally used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "the proximal end" and "the distal end" generally refer to two corresponding parts, which include not only the endpoints, and the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in this specification, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through an intermediate element, and it cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element may be in any orientation such as inside, outside, above, below or on one side of another element, unless the content clearly indicates otherwise. The terms "upper", "lower", "top" and "bottom" are generally relative position relationships arranged in the direction of gravity; the terms "vertical, vertical direction" generally refer to the direction of gravity, which is generally perpendicular to the ground, and "horizontal, horizontal plane direction" generally refers to the direction parallel to the ground; for ordinary technicians in this field, the specific meanings of the above terms in this specification can be understood according to specific circumstances.
[0038] The utility model aims to provide a connection node between a prefabricated pile and a prefabricated column, so as to solve the problems of complicated manufacturing of the existing connection node, many construction processes and high engineering cost.
[0039] In the existing connection nodes between prefabricated piles and steel pipe columns, a sealing plate is provided at the bottom of the column, and anchor holes and connection holes are provided on the sealing plate. Anchor bolts are inserted into the anchor holes, and the anchor connection between the column and the prefabricated pile is achieved in combination with fillers. At the same time, fasteners are inserted into the connection holes and used in conjunction with mechanical joints to improve the tensile performance of the connection joint. At the same time, the sealing plate is welded to the top end plate of the prefabricated pile, so that the connection joint has both compression resistance, shear resistance and tensile resistance. However, during the use of the above-mentioned connection node, the end plate often deforms during welding, and the mechanical joint is often affected by excessive pressure. Assembly is affected. Based on this, the present application provides a connection node between a prefabricated pile and a prefabricated column, which can simplify the existing connection node, reduce the construction process, and also reduce the project cost.
[0040] The following description is given with reference to the accompanying drawings.
[0041] Please refer to Figures 1 to 3 The utility model provides a connection node between a prefabricated pile and a prefabricated column, comprising: a pile body 10, a column body 20 and a connection unit 30; the top end plate 101 of the pile body 10 is welded to the bottom of the column body 20, and the pile body 10 and the column body 20 are anchored and connected through the connection unit 30, wherein the connection unit 30 comprises a steel cage 301 and / or anchor steel bars 302, and a filler 40; wherein the steel cage 301 is partially located inside the pile body 10 and partially located inside the column body 20, and the filler 40 is at least filled in the part of the steel cage 301 located inside the pile body 10 and the part of the steel cage 301 located inside the column body. It should be noted that the filler 40 can be concrete, which is anchored to the steel cage 301, and the bonding effect of the concrete itself can further improve the bearing capacity of the connection node. With such configuration, this embodiment achieves the synergistic effect of the two connection methods by directly welding the top end plate 101 of the pile body 10 to the bottom of the column body 20. At the same time, the pile body 10 and the column body 20 are connected by a connection unit 30, and a core-cast steel cage 301 is combined with a welding connection to ensure the reliability of the connection node. Compared with the prior art, the use of mechanical joints is reduced, the construction process is simplified, and the production cost is reduced.
[0042] Furthermore, regarding the connection unit 30, this embodiment provides three configuration schemes.
[0043] The first option: Please refer to Figure 1, the connection unit 30 only includes a steel cage 301 and a filler 40; the steel cage 301 includes a longitudinal main bar 3011 and an annular hoop 3012, and the steel cage 301 is arranged along the axial direction X of the pile body, one end of which is located inside the pile body 10, and the other end of which is located inside the column body 20. Further, the steel cage 301 is connected to the top end plate 101 of the pile body 10 to limit the axial position of the steel cage 301. As an optional embodiment, a limiting member (not shown in the figure) is arranged on the top end plate 101 of the pile body 10, and the limiting member extends inward along the radial direction Y of the pile body, and the steel cage 301 extends into the interior of the pile body 10 along the axial direction X of the pile body, and the side wall of the steel cage 301 is engaged with the limiting member. Further, the steel cage 301 also includes a support plate 3013; the support plate 3013 is arranged at one end of the steel cage 301 located inside the pile body 10, and the diameter of the support plate 3013 is adapted to the inner diameter of the pile body 10. Those skilled in the art can understand that the steel cage 301 is a complete grid-like component formed by a combination of steel bars, which is conducive to constraining concrete, improving the integrity of concrete components, and enabling it to withstand certain horizontal forces. The compressive bearing capacity of concrete is very high, but the tensile bearing capacity is relatively low. The steel cage 301 can play a tensile role like the longitudinal bars of the column. After pouring concrete, the connection unit 30 forms a solid cross-section, which further improves the bearing performance of the connection node. It should be noted that the longitudinal main reinforcement 3011 is arranged along the axial direction X of the pile body, and the annular hoop reinforcement 3012 is arranged along the circumferential direction of the pile body. In addition to filling the position where the steel cage 301 is located, the filler 40 can also continue to fill a distance upward inside the column body 20 to enhance the bonding effect between the steel cage 301 and the filler 40, thereby enhancing the bearing capacity of the connection node. As a preferred embodiment, the column body 20 includes a precast hollow concrete steel pipe pile column, which is coaxially arranged with the pile body 10, and the outer diameter of the precast hollow concrete steel pipe pile column is adapted to the outer diameter of the pile body. Figure 1 In the illustrated example, the inner diameter of the precast hollow concrete steel pipe pile column is matched with the inner diameter of the pile body 10. In other embodiments, the inner diameter of the precast hollow concrete steel pipe pile column may also be larger or smaller than the inner diameter of the pile body 10. Those skilled in the art may configure this according to actual conditions. With such configuration, the wall thickness of the precast hollow concrete steel pipe pile column is increased, further improving the bearing capacity of the column body 20. Compared with the connection node in the prior art, this solution can take into account the compressive, tensile and shear bearing capacities by replacing the anchor bolts and mechanical joints with the steel cage 301 and the core concrete, and simplifies the structure of the connection node, optimizes the construction process, and reduces the construction cost.
[0044] The second option: Please refer to Figure 2The connection unit 30 includes a steel cage 301, anchoring steel bars 302 and fillers 40; the steel cage 301 includes longitudinal main bars 3011 and annular stirrups 3012, the steel cage 301 is arranged along the axial direction X of the pile body, one end of which is located inside the pile body 10, and the other end of which is located inside the column body 20; the anchoring steel bar 302 is arranged at the connection portion between the pile body 10 and the column body 20, and one end is connected to the top end plate 101 of the pile body 10, and the other end is anchored in the filler 40 inside the column body 20. Further, the column body 20 includes a steel pipe, which is coaxially arranged with the pile body 10, and the outer diameter of the steel pipe is adapted to the outer diameter of the pile body 10. Figure 2 In the embodiment, the inner diameter of the steel tube is larger than the inner diameter of the pile body 10. In other embodiments, concrete may be poured into the steel tube to form a solid steel tube concrete column. Those skilled in the art may configure this according to actual conditions. Figure 2 In the illustrated example, the extension direction of the anchoring steel bar 302 is arranged parallel to the axial direction X of the pile body. Among them, a support plate 3013 is also arranged at one end of the steel cage 301 located inside the pile body 10. The diameter of the support plate 3013 is adapted to the inner diameter of the pile body 10. After being placed inside the pile body 10, it can prevent the filler 40 from filling the entire pile body 10. On the one hand, the filler 40 is filled inside the column body 20 and the part where the steel cage 301 extends into the pile body 10 to meet the bearing requirements of the connection node; on the other hand, the existing construction method usually divides the pile body 10 into several sections, and the steel cage 301 is only placed inside the last section of the pile body 10. Therefore, not setting the support plate 3013 will also cause waste of the filler 40 and increase the construction cost. The anchoring steel bar 302 is connected to the top end plate 101 of the pile body 10. This solution can reduce the setting of the bottom end plate of the column body 20, avoiding the problem of end plate deformation affecting the quality; at the same time, the pile body 10 and the column body 20 are connected by a connecting unit 30, and the anchoring connection is achieved by setting a core steel cage 301, anchor steel bars 302 and fillers 40. Combined with the welding connection, the synergistic effect of the two connection methods is achieved, which ensures the reliability of the connection node. Compared with the existing technology, the use of end plates and mechanical joints is reduced, the construction process is simplified, and the production cost is reduced.
[0045] The third option: Please refer to Figure 3 The connection unit 30 includes an anchoring steel bar 302 and a filler 40; the anchoring steel bar 302 is disposed at the connection portion between the pile body 10 and the column body 20, and one end of the anchoring steel bar 302 is connected to the top end plate 101 of the pile body 10, and the other end is anchored in the filler 40. Further, the connection unit 30 also includes a sealing plate 303; the sealing plate 303 is disposed at the connection portion between the pile body 10 and the column body 20, and is connected to the top end plate 101 of the pile body 10. Furthermore, the filler 40 is filled in the interior of the column body 20. It should be noted that in Figure 3 In the illustrated example, the extension direction of the anchoring steel bar 302 is arranged parallel to the axial direction X of the pile body. In other embodiments, the extension direction of the anchoring steel bar 302 can also be arranged at an angle to the axial direction X of the pile body. Those skilled in the art can configure this according to actual conditions. At the same time, one end of the anchoring steel bar 302 is installed on the top end plate 101 of the pile body 10; the sealing plate 303 is welded to the top end plate 101 of the pile body 10. Compared with the connection node in the prior art, this solution installs the anchoring steel bar 302 and the sealing plate 303 on the top end plate 101 of the pile body 10, cancels the end sealing plate and mechanical joint below the column body 20, simplifies the connection node, reduces the construction difficulty, and reduces the production cost.
[0046] In another embodiment, please refer to Figures 4 to 9 The utility model also provides a construction method for a connection node between a prefabricated pile and a prefabricated column, which is used to realize the connection node between the prefabricated pile and the prefabricated column as above, comprising:
[0047] Step S1: Sink the pile body 10 to a preset elevation (see Figure 5 );
[0048] Step S2: Install the steel cage 301 inside the pile body 10 and connect it to the top end plate 101 of the pile body 10; if necessary, anchor steel bars 302 may be arranged on the top end plate 101 of the pile body 10 (see Figure 6 );
[0049] Step S3: Weld the bottom of the column body 20 to the top end plate 101 of the pile body 10 (see Figure 7 );
[0050] Step S4: After the pile body 10 and the column body 20 are connected, they are sunk together to a preset elevation, and a temporary sealing plate (not shown in the figure) is set on the top of the column body 20, and then sunk together to a preset elevation; (Please refer to Figure 8 )
[0051] Step S5: After the excavation is completed to expose the top of the column body 20, the temporary sealing plate provided on the top of the column body 20 is removed, and the filler 40 is poured into the interior of the column body 20 and the interior of the pile body 10 (see Fig. 9 ).
[0052] It should be noted that Figures 5 to 9In the illustrated example, the connection unit 30 includes a steel cage 301 and anchoring steel bars 302. In other embodiments, the connection unit 30 may also include only the steel cage 301 or the anchoring steel bars 302, which is not limited in this embodiment. In step S1 and step S4, the preset elevation is near the ground; the temporary sealing plate is set so that the steel cage and the anchoring steel bars will not be affected by other materials during the pile sinking process. In step S2, it can be determined whether to set the anchoring steel bars 302 on the top end plate 101 of the pile body 10 according to the design requirements and the actual bearing capacity requirements. Figure 6 The situation shown in FIG. 4 is that the steel cage and the anchor steel bars are set at the same time. In step S5, the filler 40 may be concrete.
[0053] With such configuration, by setting the steel cage 301 and / or the anchor steel bars 302, the setting of the bottom end plate of the column body 20 is reduced, thereby avoiding the problem of deformation of the bottom end plate due to large force during welding, which affects the construction quality; at the same time, the steel cage 301 is installed inside the pile body 10, and / or the anchor steel bars 302 and the sealing plate 303 are both installed on the top end plate 101 of the pile body 10, which simplifies the construction process and reduces the construction difficulty; in addition, the use of the connection unit 30 instead of the anchor bolts and the mechanical head also reduces the construction cost.
[0054] In summary, a connection node between a prefabricated pile and a prefabricated column provided in an embodiment of the utility model includes: a pile body, a column body and a connection unit; the top end plate of the pile body is welded to the bottom of the column body, and the pile body and the column body are anchored and connected by the connection unit, wherein the connection unit includes a steel cage and a filler; wherein the steel cage is partially located inside the pile body and partially located inside the column body, and the filler is filled in at least the part of the steel cage located inside the pile body and the part of the steel cage located inside the column body.
[0055] With such configuration, the connection node between the precast pile and the precast column provided in the present application is achieved by welding the top end plate of the pile body to the bottom of the column body, and by setting a steel cage and / or anchoring steel bars and pouring core concrete to achieve an anchor connection between the pile body and the column body, thereby achieving a synergistic effect of the two connection methods of welding and anchoring, and ensuring the reliability of the connection node; at the same time, the existing connection node between the precast pile and the precast column, by setting a sealing plate at the connection position of the precast pile and the column, and passing the anchor bolts through the sealing plate, although partial anchoring is achieved, the force points are relatively concentrated on the end plate of the precast pile. Compared with the existing technology, the connection node provided in this embodiment can reduce the setting of mechanical joints, simplify the process, reduce production costs, make the operation simpler and faster, and at the same time make the force reliability of the connection node between the precast pile and the precast column higher.
[0056] Furthermore, the construction method of the connection node between the precast pile and the precast column provided in the present application is achieved by setting a steel cage and / or anchoring steel bars and pouring concrete. The pouring concrete covers the joint between the precast pile and the column, making the force more reliable. At the same time, the steel cage is installed inside the pile body, and / or the anchoring steel bars and the sealing plate are installed on the top end plate of the pile body, which simplifies the construction process and reduces the construction difficulty. In addition, the use of connection units instead of anchor bolts and mechanical heads also reduces the construction cost.
[0057] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. A connection node between a prefabricated pile and a prefabricated column, characterized in that: include: Pile body, column body and connection unit; The top end plate of the pile body is welded to the bottom of the column body, and the pile body is anchored to the column body through the connection unit, wherein the connection unit includes a steel cage and / or anchor steel bars and fillers; The steel cage is partially located inside the pile body and partially located inside the column body, and the filler is at least filled in the portion of the steel cage located inside the pile body and the portion of the steel cage located inside the column body.
2. The connection node between the precast pile and the precast column according to claim 1, characterized in that: The connection unit includes the steel cage and the filler; The steel cage is arranged along the axial direction of the pile body, with one end located inside the pile body and the other end located inside the column body.
3. The connection node between the precast pile and the precast column according to claim 2, characterized in that: The steel cage is connected to the top end plate of the pile body to limit the axial position of the steel cage.
4. The connection node between the precast pile and the precast column according to claim 2, characterized in that: The steel cage also includes a support plate; The supporting plate is arranged at one end of the steel cage located inside the pile body, and the diameter of the supporting plate is matched with the inner diameter of the pile body.
5. The connection node between the precast pile and the precast column according to claim 2, characterized in that: The column body comprises a prefabricated hollow concrete steel pipe pile column, which is coaxially arranged with the pile body, and the outer diameter of the prefabricated hollow concrete steel pipe pile column matches the outer diameter of the pile body.
6. The connection node between the precast pile and the precast column according to claim 1, characterized in that: The connection unit includes the steel cage, the anchor steel bars and the filler; The steel cage is arranged along the axial direction of the pile body, with one end located inside the pile body and the other end located inside the column body; The anchor steel bar is arranged at the connection position between the pile body and the column body, and one end of the anchor steel bar is connected to the top end plate of the pile body, and the other end is anchored in the filler inside the column body.
7. The connection node between the precast pile and the precast column according to claim 6, characterized in that: The anchoring steel bars are arranged along the axial direction of the pile body.
8. The connection node between the precast pile and the precast column according to claim 6, characterized in that: The column body comprises a steel pipe, the steel pipe is coaxially arranged with the pile body, and the outer diameter of the steel pipe is matched with the outer diameter of the pile body.