A node connecting structure and a connecting method for anchoring a concrete column and a concrete beam

Abstract

The application relates to a node connecting structure and connecting method for anchoring of a concrete column and a concrete beam, and belongs to the technical field of bridge construction. The node connecting structure and connecting method for anchoring of the concrete column and the concrete beam comprise a beam body embedded part, the beam body embedded part is used for strengthening local force of a support point of a beam body, a pile top temporary support, the top of the pile top temporary support is connected with the beam body embedded part, and the pile top temporary support is used for quickly releasing the beam body during construction. The application can ensure that local force of the support point does not cause damage to the beam body through a steel mesh, the stress intensity is improved, the pile top temporary support, the beam body embedded part and the steel pipe concrete column are connected through bolts, damage to a main body structure is avoided in the dismantling work, unnecessary appearance beautification work is effectively reduced, and the investment cost is reduced.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a joint connection structure and connection method for anchoring concrete columns and concrete beams. Background Technology

[0002] Concrete-filled steel tube structures are a new type of structural component composed of steel tubes and concrete materials. They fully utilize the advantages of high tensile strength and good plasticity of steel and good compressive strength of concrete. However, the structural form of combining concrete-filled steel tube columns with cast-in-place reinforced concrete beams or slabs requires solving the connection problem of beam-column joints. The traditional connection joint forms of steel tube columns and reinforced concrete beams mainly include: 1-reinforced ring joint, 2-through corbel ring beam joint, 3-well-type double beam joint, 4-ring beam joint, 5-through single beam joint, etc.

[0003] However, there are many drawbacks:

[0004] 1. The force transmission method at the nodes is not ideal. Existing nodes mainly rely on reinforcing rings, steel brackets, etc. to transmit bending moment, and shear force is transmitted by components such as bracket shear rings. This will cause the steel pipe to be stressed alone, which may lead to premature yielding of the steel pipe and reduce the bearing capacity of the steel pipe column.

[0005] 2. The node structure is complex and construction is inconvenient. When reinforcing rings and steel brackets are used, the amount of steel used is large. When the column cross-section is small, the internal transverse diaphragms are not easy to weld. When the small opening for reinforcement connection is used, the reinforcement is inconvenient to bend and construction is difficult.

[0006] 3. The large node size affects the functional layout of the building.

[0007] 4. Difficulty in removing nodes: If construction requires the removal of connection nodes, the above methods are difficult to operate and may easily damage the remaining beam.

[0008] Therefore, it is necessary to develop a joint connection method between steel-concrete composite columns and concrete beams that can be quickly disconnected while meeting the stress requirements. Summary of the Invention

[0009] This application provides a node connection structure and method for anchoring concrete columns and concrete beams, in order to solve the problem that the node connection methods in the prior art are not convenient for quick release while meeting the stress requirements.

[0010] The first aspect of this application provides a node connection structure for anchoring concrete columns and concrete beams, including...

[0011] Beam embedded parts, which are used to strengthen the local stress at the support points of the beam;

[0012] A temporary support at the top of the pile is connected at its top to an embedded part in the beam. The temporary support at the top of the pile can be quickly disconnected from the beam during construction.

[0013] In some embodiments, the embedded beam components include embedded reinforcing bars and embedded steel plates.

[0014] In some embodiments, the embedded steel plate has a first bolt hole.

[0015] In some embodiments, the temporary pile top support includes an upper top plate, a cylindrical wall, a lower bottom plate, and a stiffening plate.

[0016] In some embodiments, a second bolt hole is provided between the upper top plate and the lower bottom plate, which can correspond to each other.

[0017] In some embodiments, the upper top plate is a ring plate structure with a central opening, and the central opening of the upper top plate is connected and communicates with the cylinder wall.

[0018] In some embodiments, a pre-embedded steel mesh is used, which is pre-embedded in the pre-embedded part area of ​​the concrete beam to improve the local stress strength.

[0019] In some embodiments, the embedded parts of the beam are connected to the temporary support at the top of the pile by bolts.

[0020] In some embodiments, the temporary support at the top of the pile is bolted to the concrete-filled steel pipe column.

[0021] The second aspect of this application provides a method for anchoring concrete columns and concrete beams at joints, including the following steps:

[0022] First, determine the location of the steel-concrete composite column, then hoist the temporary support at the top of the pile to the top of the pile cap and connect it to the pile cap, and then connect the top of the temporary support at the top of the pile to the embedded parts of the beam.

[0023] During the beam pouring construction, the concrete of the temporary support at the top of the pile is poured simultaneously to make the temporary support at the top of the pile and the beam form an integral part, and then construction continues.

[0024] After the beam construction is completed, first disconnect the connection between the temporary support at the top of the pile and the pile cap of the steel pipe concrete pile, remove the lower steel pipe concrete column, then disconnect the connection between the temporary support at the top of the pile and the embedded parts of the beam, remove the outer steel structure of the temporary support at the top of the pile in a vertical downward direction, cut off the concrete inside the temporary support at the top of the pile, grind the beam surface, and the connection removal is completed.

[0025] This application provides a node connection structure and method for anchoring concrete columns and concrete beams. By disconnecting the connection between the temporary support at the top of the pile and the pile cap of the steel pipe concrete pile, removing the lower steel pipe concrete column, and then disconnecting the connection between the temporary support at the top of the pile and the embedded parts of the beam, the outer steel structure of the temporary support at the top of the pile is removed in a vertically downward direction, the inner concrete of the temporary support at the top of the pile is cut off, and the beam surface is ground, the connection removal is completed.

[0026] The use of steel mesh ensures that local stress at the support points will not damage the beam, thus increasing its strength. The use of bolted temporary supports at the top of the piles, embedded parts in the beam, and steel-concrete composite columns avoids damage to the main structure during demolition, effectively reducing unnecessary aesthetic work and lowering costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure provided for an embodiment of this application;

[0029] Figure 2 A top view structural diagram of the temporary support at the top of the pile in this application;

[0030] Figure 3 A schematic diagram of the main structural view provided for the temporary support at the top of the pile in this application;

[0031] Figure 4 A schematic diagram of the main structural view of the embedded parts of the beam in this application;

[0032] Figure 5 This is a top view of the embedded parts of the beam in this application.

[0033] 1. Concrete beam; 2. Beam embedded parts; 21. First bolt hole; 22. Embedded reinforcement; 23. Embedded steel plate; 3. Embedded steel mesh; 4. Steel pipe concrete column; 5. Temporary support at the pile top; 51. Upper top plate; 52. Cylinder wall; 53. Lower bottom plate; 54. Second bolt hole; 55. Stiffening plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] This application provides a node connection structure and method for anchoring concrete columns and concrete beams, which can solve the problem that the node connection method in the prior art is not convenient to quickly release while meeting the stress requirements.

[0036] See Figure 1 As shown, the first aspect of this application provides a node connection structure for anchoring a concrete column and a concrete beam, including...

[0037] 2. Embedded parts in the beam and 5. Temporary supports at the top of the pile.

[0038] Among them, the pre-embedded part 2 of the beam is used to strengthen the local stress at the support point of the beam.

[0039] The top of the temporary support 5 at the pile top is connected to the embedded part 2 of the beam.

[0040] In this embodiment, the beam embedded part 2 and the temporary support 5 at the top of the pile are connected by bolts.

[0041] In this embodiment, the temporary support 5 at the top of the pile is connected to the steel-concrete composite column 4 by bolts.

[0042] In some alternative embodiments, see Figure 1-5 As shown, the beam embedded part 2 includes embedded bar 22 and embedded steel plate 23. One end of the embedded bar 22 is inserted into the concrete beam 1 and connected to it, and the other end of the embedded bar 22 is vertically connected to the embedded steel plate 23.

[0043] The bottom surface of the pre-embedded steel plate 23 is aligned with the bottom surface of the beam in terms of elevation and alignment, so as to facilitate the aesthetic construction of the beam after demolition.

[0044] In this embodiment, a first bolt hole 21 is provided on the embedded steel plate 23, and the embedded steel plate 23 is bolted to the upper top plate 51 of the temporary support 5 at the pile top through the first bolt hole 21.

[0045] In some alternative embodiments, see Figure 1-3 As shown, the temporary support 5 at the top of the pile includes an upper top plate 51, a cylinder wall 52, a lower bottom plate 53, and a stiffening plate 55.

[0046] The upper top plate 51 connects the temporary support 5 at the top of the pile with the embedded part 2 of the beam. The stiffening plate 55 is connected to the lower steel bottom plate 53 to strengthen the rigidity of the component and ensure local stability. The lower bottom plate 53 is used as the lower end sealing plate of the cylinder wall 52 and is bolted to the steel pipe concrete column 4.

[0047] The cylindrical wall 52 can be determined to be circular, square, or other cross-sectional shapes depending on the production constraints, material procurement situation, and the size of the support end area.

[0048] The concrete poured into the temporary support 5 at the top of the pile uses the same strength grade as the beam. Depending on the actual force applied at the support point on site, the concrete in the cavity of the temporary support 5 at the top of the pile can be changed to filler materials such as sand and gravel, but it must be ensured that the filling is dense and the bearing capacity meets the construction design requirements.

[0049] In this embodiment, the upper top plate 51 has a ring plate structure with a central opening. The central opening of the upper top plate 51 is connected to the cylinder wall 52 and communicates with the inner cavity.

[0050] In some alternative embodiments, see Figure 1 As shown, it also includes a pre-embedded steel mesh 3, which is pre-embedded in the area of ​​the pre-embedded part 2 in the concrete beam 1 to improve the local stress strength.

[0051] The number of layers and the number of bars per layer of the pre-embedded steel mesh 3 should be calculated based on the actual force applied at the support points to ensure that the local stress at the support points will not damage the beam.

[0052] See Figure 1-5 As shown, a second aspect of this application provides a node connection structure for anchoring a concrete column and a concrete beam, comprising the following steps:

[0053] First, determine the location of the steel pipe concrete column 4, install the pile cap on the pile top, then hoist the temporary support 5 on the pile top to the pile cap and connect it to it, and then connect the top of the temporary support 5 on the pile top to the beam embedded part 2.

[0054] The second step is to pour concrete for the temporary support 5 at the top of the pile simultaneously during the beam pouring process, so that the temporary support 5 at the top of the pile and the beam form an integral whole, and then continue construction.

[0055] The third step, after the beam construction is completed, is to first disconnect the connection between the temporary support 5 at the top of the pile and the pile cap of the steel pipe concrete pile, remove the lower steel pipe concrete column, then disconnect the connection between the temporary support 5 at the top of the pile and the embedded part 2 of the beam, remove the outer steel structure of the temporary support 5 at the top of the pile in a vertical downward direction, cut off the concrete inside the temporary support 5 at the top of the pile, grind the beam surface, and the connection removal is completed.

[0056] The working principle and process of this application:

[0057] First, determine the location of the steel-concrete composite column 4, install the pile cap on the pile top, then hoist the temporary support 5 on the pile top to the pile cap and connect it to it, and then connect the top of the temporary support 5 on the pile top to the embedded part 2 of the beam.

[0058] During the beam pouring construction, the concrete of the temporary support 5 at the top of the pile is poured simultaneously to make the temporary support 5 at the top of the pile and the beam form an integral whole, and then construction continues.

[0059] After the beam construction is completed, first disconnect the connection between the temporary support 5 at the top of the pile and the pile cap of the steel pipe concrete pile, remove the lower steel pipe concrete column, then disconnect the connection between the temporary support 5 at the top of the pile and the embedded part 2 of the beam, remove the outer steel structure of the temporary support 5 at the top of the pile in a vertical downward direction, cut off the inner concrete of the temporary support 5 at the top of the pile, grind the beam surface, and the connection removal is completed.

[0060] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0061] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for joint connection of concrete columns and concrete beams for anchorage, characterized in that, include: A joint connection structure for anchoring concrete columns and concrete beams, comprising: Beam body embedded part (2), the beam body embedded part (2) is used to strengthen the local stress of the support point of the beam body; The top of the temporary support (5) is connected to the embedded part (2) of the beam body. The temporary support (5) can be quickly disconnected from the beam body during construction. The beam embedded parts (2) include embedded bars (22) and embedded steel plates (23); The embedded steel plate (23) has a first bolt hole (21); The temporary support (5) at the top of the pile includes an upper top plate (51), a cylinder wall (52), a lower bottom plate (53), and a stiffening plate (55); The upper top plate (51) and the lower bottom plate (53) are provided with corresponding second bolt holes (54). The upper top plate (51) is a ring plate structure with a central opening, and the central opening of the upper top plate (51) is connected and communicates with the cylinder wall (52); It also includes a pre-embedded steel mesh (3), which is pre-embedded in the area of ​​the pre-embedded parts (2) of the concrete beam (1) to improve the local stress strength; The beam embedded part (2) and the temporary support at the top of the pile (5) are connected by bolts; The temporary support (5) at the top of the pile is bolted to the steel-concrete composite column (4); The node connection method includes the following steps: First, determine the position of the steel pipe concrete column (4), then hoist the temporary support (5) to the top of the pile cap and connect it to it, and then connect the top of the temporary support (5) to the embedded part (2) of the beam. During the beam pouring construction, the concrete of the temporary support (5) at the top of the pile is poured simultaneously, so that the temporary support (5) at the top of the pile and the beam form an integral whole, and then the construction continues; After the beam construction is completed, first disconnect the connection between the temporary support (5) at the top of the pile and the pile cap of the steel pipe concrete pile, remove the lower steel pipe concrete column, then disconnect the connection between the temporary support (5) at the top of the pile and the embedded part (2) of the beam, remove the outer steel structure of the temporary support (5) at the top of the pile in a vertical downward direction, cut off the concrete inside the temporary support (5) at the top of the pile, grind the beam surface, and the connection removal is completed.

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