Concrete structure and pouring method of basement wall column node

Abstract

The present invention provides a concrete structure and pouring method for a basement wall-column node, comprising: a foundation slab, an exterior wall located above the foundation slab, a column, and a closing structure; wherein the closing structure is located at the intersection of the exterior wall and the column; and the column partially overlaps with the exterior wall along its length. The concrete pouring method for a basement wall-column node provided by the present invention decomposes the wall and column at the wall-column node, defining the intersection and overlap of the wall and the structural column as the wall. At the wall-column interface, a closing structure is used to intercept concrete of different strength grades in the wall column. The concrete is poured in two steps, front and back. This ensures that the wall-column node is free of cold joints and cracks, reduces the probability of water seepage in the exterior wall, and ensures that the concrete strength grade meets the requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a concrete structure of a basement wall column node and a pouring method thereof. Background Art

[0002] In the field of construction engineering, basement cast-in-place concrete wall columns often use concrete of different strength grades. In this case, double wire mesh or quick-closing mesh is often used to intercept the concrete of different strength grades at the junction of the wall and column. Usually, cracks are prone to occur here, causing water seepage in the basement wall, resulting in the use of additional water-stopping measures in the later stage, causing large economic losses. Summary of the Invention

[0003] In view of this, the present invention proposes a concrete structure and casting method for basement wall column nodes, aiming to solve the problem that when pouring concrete wall columns of different strength grades, the steel wire mesh or quick-closing net used to isolate concrete of different strength grades easily causes wall cracking and leads to water seepage.

[0004] The present invention proposes a concrete pouring structure for a basement wall column node, comprising: a foundation slab and an outer wall, a column and a closing structure located above the foundation slab; wherein,

[0005] The closing structure is located at the junction of the outer wall and the column;

[0006] The column partially overlaps with the outer wall along the length direction.

[0007] Furthermore, in the concrete pouring structure of the basement wall column node, the closing structure includes: post-cast steel plate mesh and bidirectional shear reinforcement; wherein,

[0008] Each steel bar in the bidirectional shear reinforcement is arranged in the post-casting strip steel mesh along the X direction and the Y direction respectively.

[0009] The concrete pouring structure of the basement wall column node provided in this embodiment defines the overlapping part of the wall column intersection as the wall body by dividing the wall column interface, and uses a closing structure to intercept the concrete of different strength grades of the wall column at the wall column interface, thereby avoiding the need to set isolation measures inside the exterior wall, thereby ensuring the integrity of the exterior wall during pouring, and eliminating the risk of leakage caused by cracking of the isolation measure section from the source.

[0010] The present invention provides a method for pouring a concrete structure of a basement wall column node, comprising the following steps:

[0011] Step 1: After the basement floor is poured, the steel bars of the basement exterior walls and columns are tied according to the design requirements;

[0012] Step 2: When setting out the column stirrups at the wall column node, the column stirrups are disconnected at the interface between the exterior wall and the column body, and the welded sections of the column stirrups are embedded in the exterior wall;

[0013] Step 3: After the outer wall and column reinforcement are tied, the interface between the outer wall and the column is sealed with an inner mold using a post-cast steel plate mesh, and bidirectional shear reinforcement is arranged on the post-cast steel plate mesh;

[0014] Step 4, sealing the remaining parts of the exterior wall, and reinforcing the wooden formwork and the post-casting strip steel mesh;

[0015] Step 5: After the wooden formwork and the post-casting steel mesh are reinforced, low-strength concrete for the exterior wall can be poured;

[0016] Step 6: After the low-strength concrete of the exterior wall has initially set, the post-cast steel mesh at the junction of the wall and column can be removed, and the column stirrup welding section embedded in the exterior wall is welded to the column stirrup on the column side;

[0017] Step 7: After tying and connecting the column reinforcement, seal and reinforce the column formwork; finally, pour high-strength concrete inside the column.

[0018] Furthermore, in the above-mentioned concrete pouring method for basement wall column nodes, in step 2, the

[0019] When tying, bend the welded section of the column stirrups into the exterior wall at the interface between the wall and the column.

[0020] Furthermore, in the above-mentioned concrete pouring method for basement wall column nodes, in step 2, the length of the welded section of the column stirrup is greater than or equal to 10 times the diameter of the stirrup.

[0021] Furthermore, in the above-mentioned concrete pouring method for basement wall column nodes, in step 4, the wooden formwork and the post-casting strip steel mesh are reinforced separately.

[0022] Furthermore, in the above-mentioned concrete pouring method for basement wall column nodes, in step 4, wooden planks are used to reinforce the wooden formwork; and steel pipes are used to reinforce the steel mesh of the post-casting strip.

[0023] The present invention provides a method for pouring concrete at a basement wall-column node. By decomposing the wall and column at the wall-column node, the overlapping portion where the wall and the structural column meet is defined as the wall. Concrete of different strength grades of the wall column is intercepted at the wall-column interface using a closing structure. The concrete is poured in two steps, front and back. This ensures that the wall-column node is free of cold joints and cracks, reduces the probability of water seepage in the exterior wall, and ensures that the concrete strength grade meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 A basement wall column node diagram provided by an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Cross-sectional view at point 1-1. DETAILED DESCRIPTION

[0027] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] See Figure 1 and Figure 2 The concrete structure of the basement wall-column node of the embodiment of the present invention includes: a foundation slab 1 and an outer wall 2, a column 3 and a closing structure 4 located above the foundation slab 1; wherein the closing structure is located at the junction of the outer wall and the column; the column partially overlaps with the outer wall along the length direction.

[0029] Specifically, different grades of concrete are poured into the foundation slab 1, the exterior wall 2, and the column 3. Low-strength concrete is poured into the exterior wall, and high-strength concrete is poured into the column.

[0030] The closing structure 4 includes: a post-cast strip steel mesh 41 and bidirectional shear reinforcement bars 42; wherein, each steel bar in the bidirectional shear reinforcement bars 42 is respectively arranged in the post-cast strip steel mesh along the X direction and the Y direction.

[0031] In practice, the bidirectional shear reinforcement is 16 mm in diameter and 150 mm apart in both the X and Y directions.

[0032] Figure 1 Where h1 is the width of the exterior wall; h2 is the length of the column; b is the width of the column. The length of the column h2 covers the exterior wall 2 with a width of h1, that is, the intersection and overlap of the exterior wall and the column can be defined as the wall.

[0033] It can be clearly concluded from the above that the concrete pouring structure of the basement wall column node provided in this embodiment defines the overlapping part of the wall column intersection as the wall body by dividing the wall column interface, and uses a closing structure to intercept the concrete of different strength grades of the wall column at the wall column interface, thereby avoiding setting the isolation measures inside the outer wall, and then ensuring the integrity of the outer wall during pouring, and eliminating the risk of leakage caused by cracking of the isolation measure section from the source.

[0034] Continue to combine Figure 1 and Figure 2 The present invention also provides a method for pouring a concrete structure of a basement wall column node, comprising the following steps:

[0035] Step 1: After the basement foundation slab is poured, tie the reinforcement for the basement exterior walls and columns according to the design requirements. In practice, waterstop steel plates are embedded in the foundation slab casting structure. Column main stirrups are used to tie the vertical main reinforcement for the exterior walls and columns.

[0036] Step 2: When setting out the column stirrups at the wall-column joint, the column stirrups are disconnected at the interface between the exterior wall and the column body, and the welded sections of the column stirrups are embedded in the exterior wall.

[0037] During binding, the welded section of the column stirrups is bent into the exterior wall at the wall-column interface. The length of the welded section of the column stirrups is greater than or equal to 10 times the diameter of the stirrups.

[0038] Step 3: After the outer wall and column reinforcement are tied, the interface between the outer wall and the column is sealed with an inner mold using a post-cast steel plate mesh, and bidirectional shear reinforcement is set on the post-cast steel plate mesh.

[0039] Specifically, the bidirectional shear reinforcement is a steel bar with a diameter of 16 mm and a spacing of 150 mm in both the X and Y directions.

[0040] Step 4: seal the remaining parts of the exterior wall and reinforce the wooden formwork and the post-casting strip steel mesh.

[0041] During specific implementation, wooden formwork is used to seal the sides of the exterior wall except for the interface with the column.

[0042] Step 5: After the wooden formwork and the post-casting strip steel mesh are reinforced, low-strength concrete for the exterior wall can be poured.

[0043] Specifically, wooden planks are used to reinforce the wooden formwork, and steel pipes are used to reinforce the steel mesh of the post-casting strip. The wooden formwork and the steel mesh of the post-casting strip are reinforced separately to avoid affecting each other during subsequent dismantling.

[0044] Step 6: After the low-strength concrete of the exterior wall has initially set, the post-cast steel mesh at the junction of the wall and column can be removed, and the column stirrup welding section embedded in the exterior wall is welded to the column stirrup on the column side.

[0045] Specifically, when welding the column stirrup welding section embedded in the exterior wall to the column stirrup on the column side, the joint percentage can be 100%, and the welding length should meet the requirements of 10d for single-sided welding and 5d for double-sided welding, where d is the stirrup diameter.

[0046] Step 7: After tying and connecting the column reinforcement, seal and reinforce the column formwork; finally, pour high-strength concrete inside the column.

[0047] Specifically, after welding the pre-buried column stirrup welding section in the exterior wall to the column stirrup on the column side, the welded column stirrup is tied to the column steel bar, the column steel bar is sealed with a wooden formwork, and then the wooden formwork of the column steel bar is reinforced with wooden planks.

[0048] The relevant parts of the method embodiment and the above-mentioned structural embodiment can be referenced to each other and will not be repeated here.

[0049] In summary, the method for casting the concrete structure of the basement wall-column node provided by the present invention decomposes the wall and column at the wall-column node, defines the overlapping part of the wall and the structural column as the wall, and uses a closing structure to intercept concrete of different strength grades of the wall column at the wall-column interface. The concrete is cast in two steps, which can ensure that the wall-column node has no cold joints and cracks, reduce the probability of water seepage in the exterior wall, and ensure that the concrete strength grade meets the requirements.

[0050] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for pouring a concrete structure of a basement wall column node, characterized in that: The following steps are involved: Step 1: After the basement floor is poured, the steel bars of the basement exterior walls and columns are tied according to the design requirements; Step 2: When setting out the column stirrups at the wall column joint, disconnect the column stirrups at the interface between the exterior wall and the column, and The welded section of the embedded column stirrups in the exterior wall; Step 3: After the outer wall and column reinforcement are tied, the outer wall and column interface is first cast with post-cast steel plate mesh. Sealing the inner mold and setting bidirectional shear reinforcement on the post-casting strip steel plate mesh; Step 4, sealing the remaining parts of the exterior wall, and reinforcing the wooden formwork and the post-casting strip steel mesh; Step 5: After the wooden formwork and the post-casting steel mesh are reinforced, the low-strength concrete of the exterior wall can be poured. earth; Step 6: After the low-strength concrete of the exterior wall has initially set, the post-cast steel plate at the junction of the wall and column can be removed. The mesh is used to weld the column stirrup welding section embedded in the exterior wall to the column stirrup on the column side; Step 7: After tying and connecting the column reinforcement, seal and reinforce the column formwork; finally, perform high-strength grade steelwork inside the column. pouring of concrete; The concrete casting structure of the basement wall-column node includes: a foundation slab and an outer wall, a column and a closing structure located above the foundation slab; wherein, the closing structure is located at the junction of the outer wall and the column; the column partially overlaps with the outer wall along the length direction; the closing structure includes: a post-cast strip steel mesh and bidirectional shear reinforcement; wherein, each steel bar of the bidirectional shear reinforcement is arranged in the post-cast strip steel mesh along the X direction and the Y direction respectively.

2. The method for pouring the concrete structure of the basement wall column node according to claim 1, characterized in that: In step 2, during binding, the welded section of the column stirrup is bent into the exterior wall at the wall-column interface.

3. The method for pouring the concrete structure of the basement wall column node according to claim 1, characterized in that: In step 2, the length of the welded section of the column stirrup is greater than or equal to 10 times the diameter of the stirrup.

4. The method for pouring the concrete structure of the basement wall column node according to claim 1, characterized in that: In the step 4, the wooden formwork and the post-casting strip steel mesh are reinforced separately.

5. The method for pouring the concrete structure of the basement wall column node according to claim 1, characterized in that: In the step 4, wooden planks are used to reinforce the wooden formwork; and steel pipes are used to reinforce the steel mesh of the post-casting strip.

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