An inclined column installation node and its construction method

Abstract

This invention discloses an inclined column installation node and its construction method, belonging to the field of building engineering technology. The key technical points are: an upper column inclinedly inserted into an upper beam slab, a lower column inclinedly inserted into a lower beam slab and coaxial with the upper column, and an intermediate column coaxially connected between the upper and lower columns; connecting plates are provided at both ends of the upper, lower, and intermediate columns; a cap and a threaded column are embedded between the connecting plate at the end of the intermediate column and the connecting plate at the end of the upper or lower column, with a threaded hole at the center of the cap, and multiple arc-shaped waist holes arranged in a ring around the threaded hole on the cap, the threaded hole and the threaded column being threadedly engaged. The purpose of this invention is to provide an inclined column installation node and its construction method to solve the problems of poor energy dissipation performance, difficult post-earthquake maintenance, and difficulty in coordinating installation due to processing errors in existing steel-concrete frame structure slab-column nodes.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to an inclined column installation node and its construction method. Background Technology

[0002] With continuous economic development and rapid urbanization, the increasing density of urban populations has led to a growing scarcity of land in core urban areas. Establishing multi-level underground integrated transportation hubs has become one solution to this problem. Inclined column structures, due to their novel architectural facade design and unique visual impact, have been applied in underground integrated transportation hub projects. However, in underground engineering, the inclined columns are relatively long and heavy, and construction conditions limit their installation, making it impossible to install them in one go. Temporary support systems are necessary to assist in construction. Furthermore, due to the large span of the structure, the stress transfer cannot be completed in one go and must be carried out in batches. This presents the challenge of installation inconsistencies caused by processing errors during the stress transfer process of the inclined column assembly.

[0003] Underground integrated transportation hubs, due to their large size and high population density, are particularly vulnerable to damage under unconventional loads such as earthquakes, resulting in significant economic losses, casualties, and social impacts. Based on past earthquake damage patterns, it has been found that structural failure often occurs at the joints of connecting nodes. Therefore, ensuring the seismic performance of inclined column structural systems at their joints and their rapid post-earthquake recovery is a pressing issue that needs to be addressed. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an inclined column installation node and its construction method, so as to solve the problems of poor node energy dissipation performance, difficulty in post-earthquake maintenance, and difficulty in coordinating installation due to processing errors in the existing steel-concrete inclined column structure inter-slab column nodes.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a slanted column installation node, including an upper column slantedly inserted into an upper beam plate, a lower column slantedly inserted into a lower beam plate and coaxial with the upper column, and an intermediate column coaxially connected between the upper column and the lower column;

[0006] The upper column, lower column, and middle column are all equipped with connecting plates at both ends;

[0007] A cap and a threaded post are embedded between the connecting plate at the end of the intermediate post and the connecting plate at the end of the upper post or lower post. A threaded hole is opened at the center of the cap, and multiple arc-shaped waist holes are opened in a ring array around the threaded hole on the cap. The threaded hole is threadedly engaged with the threaded post.

[0008] The cap and threaded post are sandwiched between two connecting plates. Multiple screws are installed through the two connecting plates. Each screw passes through one of the arc-shaped waist holes and is arranged in a circular array around the threaded post. Each screw has multiple nuts. The nuts closer to the inside are tightened towards the two ends of the screw, while the nuts on the outside are tightened towards the middle of the screw. This cooperation is used to install the connecting plate and the cap, and the connecting plate and the threaded post together.

[0009] In some embodiments, the connecting plate has a disc-shaped structure with an outer diameter larger than that of the upper column, lower column, and middle column. Multiple axial through holes are arranged in a ring array at the edge of the connecting plate, and each of the through holes is penetrated by one of the screws.

[0010] In some embodiments, one end of the threaded hole is flared outward in a trumpet shape.

[0011] In some embodiments, one end of the threaded post is provided with a mounting seat, and the threaded post is mounted on the connecting plate through the mounting seat. The connecting plate and the mounting seat are both penetrated by the screw and are installed together by tightening a plurality of nuts.

[0012] In some embodiments, an energy-dissipating rod is embedded on the screw at a position between the screw cap and the mounting base.

[0013] A construction method for an inclined column installation node includes the following steps:

[0014] Construct the aforementioned upper beam slab, upper column, lower beam slab, lower column, and intermediate column;

[0015] The intermediate column is lifted between the upper and lower columns;

[0016] The cap and threaded post are screwed together, and the integral structure formed by the two is then embedded between the connecting plate at the end of the middle post and the connecting plates at the ends of the upper and lower posts.

[0017] Tighten the cap until the middle post is locked between the upper and lower posts;

[0018] Install each of the screws in sequence and tighten each of the nuts until the cap is installed together with the connecting plate on the upper or lower column, and the threaded column is installed together with the connecting plate on the middle column.

[0019] In some embodiments, the steps for manufacturing the upper beam slab, upper column, lower beam slab, lower column, and intermediate column are as follows:

[0020] The connecting plates are welded to both ends of the upper column, lower column, and middle column frame;

[0021] The upper beam slab, upper column, lower beam slab, lower column, and intermediate column are cast using molds. After the cast material has solidified and formed, all molds are removed.

[0022] In some embodiments, the connecting plate serves as part of the mold.

[0023] In summary, the present invention has the following beneficial effects:

[0024] This type of inclined column installation node and its construction method, the threaded column and the multiple screws surrounding the threaded column play a multiple supporting and connecting role. The threaded column is located at the center of the node between columns, playing a central supporting and connecting role, while the multiple screws are distributed in a ring array at the edge of the node, playing a surrounding supporting and connecting role, making the node structure firm and reliable.

[0025] The screw of this invention is equipped with energy-dissipating rods, which can pre-bear the breaking force and vibration, making the joint more earthquake-resistant. During an earthquake, they can dissipate energy and control the damage to the joint on the energy-dissipating rods when subjected to seismic loads, thereby protecting the inter-column joint and improving its seismic performance. Furthermore, since each component on the joint of this invention is a separate and detachable structure, it is easier to replace damaged components and repair them compared to integrally connected joints (such as welded or integrally cast joints).

[0026] During installation, the length of the screw cap and threaded column structure can be adjusted by screwing the cap, ensuring that both ends of the middle column firmly abut against the upper and lower columns, thus providing compensating support. This connection method effectively solves connection errors that are prone to occur during construction, addressing the problems of existing nodes requiring cutting or filling and being difficult to assemble when connection errors occur. Moreover, after all components on the node are installed, the arc-shaped waist hole on the cap allows it to still rotate in any direction within a certain range, further correcting assembly errors. This solves the problem of being unable to correct assembly errors after all components are installed. Furthermore, when the node is damaged, the loosening caused by the damage can be corrected by rotating the cap, thus providing excellent emergency response capabilities.

[0027] The present invention has connecting plates at both ends of the upper column, lower column and middle column. Compared with the existing direct connection of column frame sections, the present invention has lower connection accuracy requirements and lower connection difficulty. The connecting plates can act as templates during casting, making construction more convenient, thereby effectively improving the connection efficiency of nodes and greatly shortening the construction time. Attached Figure Description

[0028] Figure 1This is an overall structural diagram of the node of the present invention;

[0029] Figure 2 for Figure 1 A magnified view of point A;

[0030] Figure 3 This is a diagram showing the split structure of the nodes in this invention;

[0031] Figure 4 This is a detailed structural diagram of the screw cap of the node of the present invention;

[0032] Figure 5 This is a detailed structural diagram of the threaded post of the node of the present invention;

[0033] Figure 6 This is a detailed structural diagram of the screw of the node of the present invention.

[0034] In the diagram: 1 Upper beam plate 2 Upper column 3 Lower beam plate 4 Lower column 5 Intermediate column 6 Connecting plate 7 Screw cap 701 Threaded hole 702 Arc-shaped waist hole 8 Threaded column 801 Mounting seat 9 Screw 10 Energy dissipation rod 11 Nut. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] like Figure 1-6 As shown, this invention provides a slanted column installation node, which effectively solves the problems of poor energy dissipation performance, difficult post-earthquake maintenance, and installation errors in existing steel-concrete frame structure slab-column joints. Figure 1 As shown, the node includes an upper column 2 that is obliquely inserted into the upper beam plate 1, a lower column 4 that is obliquely inserted into the lower beam plate 3 and coaxial with the upper column 2, and an intermediate column 5 that is coaxially connected between the upper column 2 and the lower column 4. The upper column 2 and the upper beam plate 1 are fixedly installed together, the lower column 4 and the lower beam plate 3 are fixedly installed together, and the intermediate column 5 is used to connect the upper column 2 and the lower column 4.

[0040] like Figure 2 and Figure 3 As shown, the upper column 2, lower column 4, and middle column 5 are all equipped with connecting plates 6 at both ends. The connecting plates 6 can reduce the connection accuracy requirements of the nodes, making the node connection easier and the construction more convenient, thereby effectively improving the connection efficiency of the nodes and greatly shortening the construction time. At the same time, the connecting plates 6 also serve as part of the casting mold, which facilitates the casting and production of the upper beam slab 1, upper column 2, lower beam slab 3, lower column 4, and middle column 5.

[0041] like Figure 3 As shown, a cap 7 and a threaded post 8 are embedded between the connecting plate 6 at the end of the intermediate column 5 and the connecting plate 6 at the end of the upper column 2 or the lower column 4. The cap 7 and the threaded post 8 form an integral structure with an adjustable length, which can effectively compensate for connection errors that may occur during construction, and can also correct loosening caused by damage after an earthquake, thereby improving the emergency response capability of the joint.

[0042] like Figure 4 As shown, a threaded hole 701 is provided at the axis of the screw cap 7, and multiple arc-shaped waist holes 702 are provided in a ring array around the threaded hole 701 on the screw cap 7. The threaded hole 701 is threadedly engaged with the threaded post 8.

[0043] like Figure 2As shown, the cap 7 and the threaded post 8 are sandwiched between two connecting plates 6. Multiple screws 9 are threaded through the two connecting plates 6, each screw 9 passing through an arc-shaped hole 702 and arranged in a circular array around the threaded post 8. Each screw 9 has multiple nuts 11, which are tightened to secure the connecting plates 6 and cap 7, and the connecting plates 6 and threaded post 8 together. The screws 9 and nuts 11 provide fixation and reinforcement, and also generate energy dissipation during earthquakes.

[0044] like Figure 2 and Figure 6 As shown, in this embodiment, an energy-dissipating rod 10 is also embedded on the screw 9 at the position between the screw cap 7 and the mounting base 801. The energy-dissipating rod 10 can pre-bear the breaking force and vibration, so that the node has strong seismic resistance. When an earthquake occurs, it can dissipate energy, and when subjected to seismic loads, the damage to the node is controlled on the energy-dissipating rod 10, thereby protecting the inter-column node and improving the seismic performance of the node.

[0045] The energy dissipation bar 10 is an energy-dissipating device made using the properties of shape memory alloy (SMA), which can be used for purposes such as earthquake resistance, vibration reduction, and self-resetting in civil engineering. SMA is a new type of functional material with unique damping properties, shape memory effect, and superelastic effect.

[0046] The principle of the energy dissipation bar 10 is to utilize the hysteresis phenomenon generated during the phase transition of SMA under different temperatures and stresses to dissipate the energy of structural vibration. The energy dissipation bar 10 can be categorized into wire devices, rod devices, and composite devices based on the form of the SMA material. Different types of energy dissipation bars 10 have different structures and performance characteristics, and can be designed and optimized according to engineering needs.

[0047] Energy dissipation bars 10 have broad application prospects in civil engineering. They can improve the ductility and energy dissipation capacity of structures, reduce residual deformation, and achieve sustainable use and full life-cycle considerations for structures. Currently, some research and practice at home and abroad have proven the effectiveness and feasibility of energy dissipation bars 10 in frame structures, beam-column joints, bridge structures, etc.

[0048] like Figure 2 and Figure 3 As shown, in this embodiment, the connecting plate 6 has a disc-shaped structure, and its outer diameter is larger than that of the upper column 2, the lower column 4, and the middle column 5. Multiple axial through holes are arranged in a ring array along the edge of the connecting plate 6, and each through hole is pierced by a screw 9. The disc-shaped structure of the connecting plate 6 increases the contact area and stability of the nodes, and also facilitates installation and disassembly.

[0049] like Figure 4 As shown, in this embodiment, one end of the threaded hole 701 is flared outward in a trumpet shape. This facilitates the quick alignment of the threaded post 8 with the threaded hole 701, enabling rapid assembly of the two.

[0050] like Figure 5 As shown, in this embodiment, one end of the threaded post 8 is provided with a mounting base 801. The threaded post 8 is mounted on the connecting plate 6 through the mounting base 801. The connecting plate 6 and the mounting base 801 are both penetrated by the screw 9 and are installed together by tightening multiple nuts 11. The mounting base 801 can increase the connection strength and stability between the threaded post 8 and the connecting plate 6, and also facilitates installation and disassembly.

[0051] This invention also provides a construction method for inclined column installation joints, which effectively simplifies the construction process, improves construction efficiency and quality, and ensures the structural performance and seismic performance of the joint. The method includes the following steps:

[0052] S1. Construct the upper beam slab 1, upper column 2, lower beam slab 3, lower column 4, and middle column 5;

[0053] S2. Lift the middle column 5 between the upper column 2 and the lower column 4;

[0054] S3. Screw the cap 7 and the threaded post 8 together, and then embed the integral structure formed by the two into the connecting plate 6 at the end of the middle post 5 and the connecting plate 6 at the end of the upper post 2 and the lower post 4.

[0055] S4. Twist the cap 7 until the middle post 5 is stuck between the upper post 2 and the lower post 4.

[0056] S5. Install each screw 9 in sequence and tighten each nut 11 until the cap 7 is installed together with the connecting plate 6 on the upper column 2 or lower column 4, and the threaded column 8 is installed together with the connecting plate 6 on the middle column 5.

[0057] In this embodiment, in the steps of manufacturing the upper beam plate 1, upper column 2, lower beam plate 3, lower column 4, and intermediate column 5, each connecting plate 6 is first welded to both ends of the frame of the upper column 2, lower column 4, and intermediate column 5. Then, the upper beam plate 1, upper column 2, lower beam plate 3, lower column 4, and intermediate column 5 are cast using molds. After the cast material has solidified and formed, all molds are removed.

[0058] In this embodiment, the connecting plate 6 serves as part of the mold, which reduces the amount and cost of molds used, while also ensuring the connection quality and accuracy between the upper beam plate 1, upper column 2, lower beam plate 3, lower column 4, intermediate column 5 and the connecting plate 6.

[0059] Furthermore, due to the structural characteristics of the node of the present invention, it is possible to achieve oblique insertion installation. That is, the upper column 2, which is obliquely inserted on the upper beam plate 1, and the lower column 4, which is obliquely inserted on the lower beam plate 3 and coaxial with the upper column 2, are pre-cast on the upper beam plate 1 and the lower beam plate 3, respectively. Then, the intermediate column 5, which is coaxially connected between the upper column 2 and the lower column 4, is lifted between the upper column 2 and the lower column 4. This saves the construction and installation time when the temporary support system is replaced with the connection form of this node, simplifies the construction process, and improves the construction efficiency.

[0060] In the step of lifting the intermediate column 5 between the upper column 2 and the lower column 4, the cap 7 and the threaded column 8 are first screwed together. Then, the integrated structure formed by the two is embedded between the connecting plate 6 at the end of the intermediate column 5 and the connecting plate 6 at the ends of the upper and lower columns 2 and 4. Finally, the cap 7 is screwed on until the intermediate column 5 is secured between the upper and lower columns 2 and 4. This step can effectively compensate for connection errors that may occur during construction, and can also correct loosening caused by damage after an earthquake, improving the emergency response capability of the joint.

[0061] In the steps of sequentially installing each screw rod 9 and tightening each nut 11 until the cap 7 is connected to the connecting plate 6 on the upper column 2 or lower column 4, and the threaded column 8 is connected to the connecting plate 6 on the intermediate column 5, each screw rod 9 is first passed through each arc-shaped waist hole 702 and arranged in a circular array around the threaded column 8. Then, each nut 11 is tightened, so that the cap 7 and the threaded column 8 are clamped between the two connecting plates 6 and firmly connected to them. This step can further enhance the structural strength and stability of the node, and can also generate an energy dissipation effect during earthquakes.

[0062] In this type of inclined column installation node and its construction method, the threaded column 8 and the multiple screw rods 9 surrounding the threaded column 8 play multiple supporting and connecting roles. The threaded column 8 is located at the center of the node between columns, playing a central supporting and connecting role, while the multiple screw rods 9 are distributed in a ring array at the edge of the node, playing a surrounding supporting and connecting role, making the node structure firm and reliable.

[0063] The screw 9 of the present invention is provided with energy dissipation rods 10. These energy dissipation rods 10 can pre-bear the breaking force and vibration, so that the node has strong seismic resistance. When an earthquake occurs, it can dissipate energy and control the damage to the node on the energy dissipation rods 10 when bearing seismic load, thereby protecting the inter-column node and improving the seismic performance of the node. Since the components on the node of the present invention are all separate and detachable structures, it is easier to replace damaged components and repair them compared to nodes with integrated connections (such as welded or cast-in-place nodes).

[0064] During installation, the length of the entire structure of the screw cap 7 and threaded column 8 can be adjusted by screwing the screw cap 7, so that the two ends of the middle column 5 firmly abut against the upper column 2 and the lower column 4, playing a compensating support role. This connection method can effectively solve the connection errors that are easy to occur during construction. It solves the problem that existing nodes need to be cut off or filled when connection errors occur, and are not easy to assemble. Moreover, after all the components on the node are installed, due to the existence of the arc-shaped waist hole 702 on the screw cap 7, the screw cap 7 can still rotate in any direction within a certain range to further correct assembly errors. It solves the problem that assembly errors cannot be corrected after all components are installed. In addition, when the node is damaged, the loosening caused by the damage can also be corrected by rotating the screw cap 7, thus having a good emergency capability.

[0065] The present invention provides connecting plates 6 at both ends of the upper column 2, the lower column 4, and the middle column 5. Compared with the existing direct connection of column frame sections, the present invention has lower connection accuracy requirements, lower connection difficulty, and more convenient construction, thereby effectively improving the connection efficiency of nodes and greatly shortening the construction time.

[0066] In summary, the inclined column installation node and its construction method of the present invention, through the adoption of technical features such as adjustable length screw caps 7 and threaded columns 8, annular array of screws 9 and nuts 11, and screws 9 embedded with energy dissipation bars 10, achieve beneficial effects such as structural robustness and reliability, excellent seismic performance, correctable installation errors, and convenient maintenance. At the same time, it simplifies the construction process, improves construction efficiency and quality, and provides a new technical solution for the design and construction of inclined column structural systems in underground integrated transportation hub projects.

[0067] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A type of inclined column installation node, characterized in that: Includes an upper column (2) that is obliquely inserted into the upper beam plate (1), a lower column (4) that is obliquely inserted into the lower beam plate (3) and coaxial with the upper column (2), and an intermediate column (5) that is coaxially connected between the upper column (2) and the lower column (4). The upper column (2), lower column (4), and middle column (5) are all provided with connecting plates (6) at both ends. A cap (7) and a threaded post (8) are embedded between the connecting plate (6) at the end of the intermediate post (5) and the connecting plate (6) at the end of the upper post (2) or the lower post (4). A threaded hole (701) is provided at the center of the cap (7). Multiple arc-shaped waist holes (702) are provided on the cap (7) in a ring array around the threaded hole (701). The threaded hole (701) is threadedly engaged with the threaded post (8). The cap (7) and threaded post (8) are sandwiched between two connecting plates (6). Multiple screws (9) are provided through the two connecting plates (6). Each screw (9) passes through each of the arc-shaped waist holes (702) and is arranged in a ring array around the threaded post (8). Each screw (9) is provided with multiple nuts (11). The connecting plates (6) and cap (7), and the connecting plates (6) and threaded post (8) are installed together by tightening the nuts (11). The connecting plate (6) has a disc-shaped structure, and its outer diameter is larger than that of the upper column (2), lower column (4), and middle column (5). Multiple axial through holes are arranged in a ring array at the edge of the connecting plate (6), and each of the through holes is penetrated by each of the screws (9).

2. The inclined column installation node according to claim 1, characterized in that: One end of the threaded hole (701) is flared outward in a trumpet shape.

3. The inclined column installation node according to claim 1, characterized in that: One end of the threaded post (8) is provided with a mounting seat (801). The threaded post (8) is mounted on the connecting plate (6) through the mounting seat (801). The connecting plate (6) and the mounting seat (801) are simultaneously penetrated by the screw (9) and installed together by tightening multiple nuts (11).

4. The inclined column installation node according to claim 3, characterized in that: An energy-dissipating rod (10) is embedded on the screw (9) at a position between the screw cap (7) and the mounting base (801).

5. A construction method for an inclined column installation node, used to construct the inclined column installation node according to any one of claims 1-4, characterized in that, Includes the following steps: Construct the upper beam slab (1), upper column (2), lower beam slab (3), lower column (4), and intermediate column (5); The intermediate column (5) is lifted between the upper column (2) and the lower column (4); The cap (7) and the threaded post (8) are screwed together, and the integral structure formed by the two is then embedded between the connecting plate (6) at the end of the middle post (5) and the connecting plate (6) at the end of the upper post (2) and the lower post (4). Tighten the cap (7) until the middle post (5) is locked between the upper post (2) and the lower post (4); Install each of the screws (9) in sequence, passing the screws (9) through the through holes arranged in a ring at the edge of the connecting plate (6) and the arc-shaped waist hole (702) on the cap (7); and tighten each of the nuts (11) until the cap (7) is installed together with the connecting plate (6) on the upper column (2) or the lower column (4), and the threaded column (8) is installed together with the connecting plate (6) on the intermediate column (5).

6. The construction method for an inclined column installation node according to claim 5, characterized in that: The steps for constructing the upper beam slab (1), upper column (2), lower beam slab (3), lower column (4), and intermediate column (5) are as follows: The connecting plates (6) are welded to both ends of the upper column (2), lower column (4), and middle column (5) frame; The upper beam slab (1), upper column (2), lower beam slab (3), lower column (4), and middle column (5) are cast using molds. After the cast material has solidified, all molds are removed.

7. The construction method for an inclined column installation node according to claim 6, characterized in that: The connecting plate (6) serves as part of the mold.

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