Tongue-and-groove type expansion joint building construction structure

Abstract

The utility model discloses a tongue-and-groove type expansion joint building construction structure, and relates to an improvement technology of a pouring structure wall expansion joint structure between two columns. Comprising building columns (1) and a structural wall body arranged between the two building columns, the structural wall body is divided into three sections by two vertical tongue-and-groove expansion joints (4), and the three sections of structural wall bodies comprise two side concrete walls (2) which are arranged on the two sides and are integrally poured with the building columns and a middle section concrete wall (3) which is independently poured; the transverse section of the tongue-and-groove expansion joint is in a Z shape formed by connecting three straight line sections, the straight line sections at the two ends are staggered and perpendicular to the surface of a structural wall, and the straight line section in the middle is perpendicular to the straight line sections at the two ends. The steel bars of the concrete walls on the two sides and the concrete wall in the middle section are broken at the tongue-and-groove expansion joints; and an extruded sheet (5) is filled in the tongue-and-groove expansion joint. The problems that according to an existing construction technology for pouring a structural wall expansion joint between two columns, operation is tedious, cost is high, and the wall concrete joint forming quality cannot be guaranteed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints of building column casting walls, in particular to an improved technology of the expansion joint structure of a casting structure wall between two columns. Background Art

[0002] Regulations for expansion joints: If the plane size of a building is too long, due to thermal expansion and contraction, it may cause excessive temperature stress in the structure. It is necessary to set a joint at a certain length of the structure to divide the building into several parts. This joint is the expansion joint. The distance between expansion joints is different for different structural systems. Article 8.1 of the "Code for Design of Concrete Structures" GB50010-2010 has special regulations for this. The expansion joints on the walls of buildings are mostly located at the joints between two units. The method of column and wall expansion joints: reserve gaps at a certain distance along the length of the building wall and divide it into two independent parts, so that it can be horizontally expanded and contracted along the length.

[0003] The expansion joint of the wall between two building columns is a structural joint set vertically along the building wall to avoid cracks or damage to the wall structure, so that the building wall can be horizontally expanded in the long direction. The existing technology uses steel wire mesh and quick-shrink mesh to cover the joint and leave the expansion joint. However, it is very easy to expand the mold during the pouring of wall concrete, and the construction operation is cumbersome, and the quality and geometric dimensions of the wall concrete joint cannot be guaranteed.

[0004] Chinese patent document CN202222434791 provides a prefabricated component for expansion joints of buildings, which effectively combines a cover plate with an external insulation layer, and two insertion grooves that are staggered and interspersed with each other are extended opposite to the expansion joint. When the external insulation layer undergoes a certain deformation under the action of temperature difference, there can be a certain relative displacement between the two insertion grooves of the two sub-cover plates to effectively cooperate with the deformation of the external insulation layer, protect the stability of the overall structure, and ensure the waterproof and thermal insulation performance at the expansion joint.

[0005] The above patented technology can only be applied to exterior walls with insulation layers. The above patent and prior art methods for constructing expansion joints in structural walls between two columns have the problems of cumbersome operation, high cost, and failure to guarantee the quality of the wall concrete joints.

[0006] In view of this, this utility model is applied for. Utility Model Content

[0007] The utility model provides a tongue-and-groove expansion joint construction structure to solve the problems of complicated operation, high cost and failure to ensure the quality of wall concrete expansion joints in the existing construction technology of pouring structural wall expansion joints between two columns.

[0008] To solve the above problems, the present utility model provides a construction structure of a tongue-and-groove expansion joint for buildings, which includes building columns 1 and a structural wall disposed between two building columns 1. The structural wall is divided into three sections by two vertical tongue-and-groove expansion joints 4. The three sections of the structural wall include two side concrete walls 2 integrally cast with the building columns 1 on both sides and an intermediate section concrete wall 3 cast separately; the transverse section of the tongue-and-groove expansion joint 4 is in a Z shape formed by connecting three straight line segments. The straight line segments at both ends are offset and perpendicular to the surface of the structural wall, and the middle straight line segment is perpendicular to the straight line segments at both ends; the steel bars of the two side concrete walls 2 and the intermediate section concrete wall 3 are disconnected at the position of the tongue-and-groove expansion joint 4; an extruded polystyrene board 5 is filled in the tongue-and-groove expansion joint 4.

[0009] Further, a construction structure of a tongue-and-groove expansion joint for buildings of the present utility model also has the following characteristics: vertical reinforcement bars 6 are vertically disposed in the tongue-and-groove expansion joint 4.

[0010] The vertical reinforcement bars 6 are respectively located at the right-angle corner positions and both sides of the wall surface ports in the tongue-and-groove expansion joint 4.

[0011] The technical effects of the present utility model are as follows:

[0012] 1. During the construction of the structural wall between the above-ground building columns, due to the design of the tongue-and-groove expansion joint, the width of the expansion joint is 20 mm, and an extruded polystyrene board is filled in the tongue-and-groove expansion joint. Therefore, when the wall is poured and bulges, the extruded polystyrene board will be compressed, and no cracks will appear on the wall surface, which simplifies the construction operation, reduces the project cost, and ensures the joint quality and geometric dimensions of the wall concrete.

[0013] 2. During construction, the intermediate section of the wall can be poured first. After demolding, a 20-mm-thick extruded polystyrene board is used to fill the gap, and then the columns and walls on both sides are poured. The overall construction effect is good and can meet the design requirements of the tongue-and-groove expansion joint.

[0014] 3. A tongue-and-groove expansion joint with a Z-shaped cross-section formed by connecting three straight line segments is provided between the three sections of the structural wall. Compared with a straight expansion joint, this tongue-and-groove expansion joint can ensure the structural stability of the intermediate section concrete wall. At the same time, vertical reinforcement bars are provided in the tongue-and-groove expansion joint to reinforce the intermediate section concrete wall. Description of the Drawings

[0015] Figure 1 is the transverse sectional view of the present utility model;

[0016] Figure 2 is Figure 1 the partial view in the K direction of

[0017] Figure 3 is Figure 1 the partial enlarged view at I of

[0018] Description of symbols in the figure: Building column 1, concrete walls 2 on both sides, middle-section concrete wall 3, tongue-and-groove expansion joint 4, extruded polystyrene board 5, vertical reinforcement 6. Specific implementation mode

[0019] The following uses the best embodiments to describe the present invention in detail.

[0020] As Figures 1-3 shown, a building construction structure with a tongue-and-groove expansion joint includes a building column 1 and a structural wall arranged between two building columns 1. The structural wall is divided into three sections by two vertical tongue-and-groove expansion joints 4. The three-section structural wall includes two side concrete walls 2 integrally cast with the building column 1 on both sides and a middle-section concrete wall 3 cast separately; the transverse section of the tongue-and-groove expansion joint 4 is a Z shape formed by connecting three straight line segments. The straight line segments at both ends are offset and perpendicular to the surface of the structural wall, and the middle straight line segment is perpendicular to the straight line segments at both ends; the gap width of the tongue-and-groove expansion joint 4 is 20 mm, and the steel bars of the two side concrete walls 2 and the middle-section concrete wall 3 are disconnected at the position of the tongue-and-groove expansion joint 4; an extruded polystyrene board 5 is filled in the tongue-and-groove expansion joint 4, and the extruded polystyrene board 5 uses a 20-mm-thick extruded polystyrene board.

[0021] Preferably: vertical reinforcement 6 is arranged vertically in the tongue-and-groove expansion joint 4, and the vertical reinforcement 6 is respectively located at the right-angle corner position inside the tongue-and-groove expansion joint 4 and on both sides of the wall surface port. The vertical reinforcement 6 is tied to the two side concrete walls 2 and the middle-section concrete wall 3, or the vertical reinforcement 6 is tied to the extruded polystyrene board. The vertical reinforcement 6 plays a role in strengthening the wall expansion joint, and the vertical reinforcement 6 uses steel bars with a diameter of 3 mm.

[0022] I. Wall construction steps:

[0023] 1. Disconnect the wall steel bars at the expansion joint according to the design requirements.

[0024] 2. First formwork the middle-section concrete wall formwork.

[0025] 3. Pour the concrete of the middle-section concrete wall.

[0026] 4. After the formwork of the middle-section concrete wall is removed, fill the two sides with 20-mm-thick extruded polystyrene boards to form an expansion joint, and set vertical reinforcement.

[0027] 5. Formwork on both sides of the middle-section concrete wall and pour the concrete of the two side concrete walls.

[0028] 6. Do not remove the extruded polystyrene board and use it as the middle filling material.

[0029] II. Key technologies:

[0030] 1. After the formwork of the middle-section wall concrete is removed, clean the concrete slag on the side surface.

[0031] 2. Check the perpendicularity of the tongue-and-groove at the side of the middle section.

[0032] 3. After the formwork of the walls on both sides of the middle section is assembled, ensure that they are on the same straight line as the middle section.

[0033] III. Scope of application:

[0034] It is applicable to the construction technology of setting expansion joints for structural walls between two building columns above ground.

[0035] IV. Innovative highlights:

[0036] Simple operation, safe and reliable, cost-saving.

Claims

1. A tongue-and-groove expansion joint building construction structure, comprising a building column (1) and a structural wall arranged between two building columns (1), characterized in that: The structural wall is divided into three sections by two vertical tongue-and-groove expansion joints (4), and the three sections of the structural wall include two side concrete walls (2) cast integrally with the building column (1) and a separately cast middle section concrete wall (3); the transverse section of the tongue-and-groove expansion joint (4) is a Z-shape formed by connecting three straight segments, the straight segments at the two ends are offset and perpendicular to the surface of the structural wall, and the middle straight segment is perpendicular to the straight segments at the two ends; the steel bars of the two side concrete walls (2) and the middle section concrete wall (3) are disconnected at the tongue-and-groove expansion joint (4); and the tongue-and-groove expansion joint (4) is filled with an extruded board (5).

2. A tongue-and-groove expansion joint building construction structure as claimed in claim 1, characterized in that: Vertical ribs (6) are vertically arranged in the tongue-and-groove expansion joint (4).

3. A tongue-and-groove expansion joint construction structure as claimed in claim 1, characterized in that: The vertical ribs (6) are respectively located at the right-angle corners inside the tongue-and-groove expansion joint (4) and at the two sides of the wall surface end.

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