Smoke exhaust flue structure floor hole retention and construction method thereof

Abstract

According to the smoke exhaust flue structure floor hole retention and construction method, a flue floor support is completed at a time when a main body structure is constructed, the support and the structure are integrally cast in situ, the section size of a support area is smaller than that of a surrounding floor, and a formed hole is slightly smaller than the inner diameter of a smoke exhaust flue; when the smoke exhaust flue is installed, it is only needed to conduct bed mortar leveling in the bearing area, and pits in the bearing area can be leveled layer by layer in the follow-up decoration process so that the leakproofness and stability of the smoke exhaust flue can be enhanced. By means of the method, the problems that in an existing smoke exhaust flue structure floor hole reserving scheme, the number of pre-installation procedures is large, labor and materials are wasted, cost is high, and environmental protection is not achieved can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and more specifically, to a smoke exhaust duct structure floor opening retention and a construction method thereof. Background Art

[0002] At present, the structural floor openings for smoke exhaust duct installation in housing construction projects are larger than the size of the smoke exhaust duct. It is necessary to embed steel plates in the side walls of the openings and weld angle steels to make flue floor supports, or to plant reinforcement in the openings of the structural floor in the later stage of construction to make floor flue supports. The steel plates, angle steels or steel bars used need to be treated with anti-corrosion, and the gap between the smoke exhaust duct and the structural opening needs to be sealed with a hanging mold. During the entire construction process, welding and painting have high requirements for construction operators, and there are many pre-installation processes and labor and material costs, which are costly and not environmentally friendly.

[0003] Therefore, there is an urgent need for a simpler and more environmentally friendly solution for retaining the openings in the floor slabs of the smoke exhaust duct structure. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide a smoke exhaust duct structure floor opening retention and a construction method thereof, so as to solve the problems existing in the existing smoke exhaust duct structure floor opening retention scheme, such as many pre-installation steps, labor and material consumption, high cost and environmental pollution.

[0005] The smoke exhaust duct structure floor opening retention provided by the present invention comprises a smoke duct floor support and an opening template fitted and buckled on the smoke duct floor support; wherein,

[0006] The flue floor support is an integral cast-in-place structure, which is constructed at the same time as the main structure of the building;

[0007] The cross-sectional dimensions of the supporting area of ​​the flue floor support are smaller than the cross-sectional dimensions of the surrounding floor slabs, and the opening formed is smaller than the inner diameter of the exhaust flue;

[0008] The opening template includes a snap-fitting portion and a supporting portion; wherein the snap-fitting portion is in contact with the flue floor support and the building structure connected to the flue floor support, and the supporting portion is perpendicular to the side wall of the flue floor support and is fixedly connected to the downwardly extending end of the vertical plate of the side wall that the snap-fitting portion is in contact with, and is in contact with the floor bottom template.

[0009] In addition, an optional solution is that the hole template is a standardized template made by welding angle steel according to the size of the hole.

[0010] In addition, an optional solution is to provide an air inlet hole on the vertical plate where the buckling portion is in contact with the side wall, and the air inlet hole is used to inflate when removing the hole template so as to utilize air pressure for demoulding.

[0011] In addition, an optional solution is to provide a template fixing hole on the supporting part, and the template fixing hole is used to fix the supporting part on the floor bottom formwork.

[0012] In addition, an optional solution is that the buckling portion further includes an upper horizontal plate, a lower horizontal plate, an upper side plate, and a lower side plate; wherein,

[0013] The vertical plate is vertically arranged between the upper horizontal plate and the lower horizontal plate;

[0014] The upper side plate is vertically arranged on a side of the upper horizontal plate away from the vertical plate;

[0015] The lower side plate is vertically arranged on a side of the lower horizontal plate away from the vertical plate.

[0016] In addition, an optional solution is that the top end of the upper side plate is higher than the ground decoration layer of the main structure of the building by a preset distance.

[0017] In addition, the present invention also provides a construction method for retaining a smoke exhaust duct structure floor opening, which is used to construct the smoke exhaust duct structure floor opening retention as described above; the method comprises:

[0018] When constructing the main structure of the building, the flue floor support is constructed at the structural floor opening at the same time;

[0019] A hole template is made according to the size of the hole formed by the flue floor support.

[0020] In addition, an optional solution is to cover the hole formed by the flue floor support with a steel mesh before installing the smoke exhaust duct, and then pour concrete on the steel mesh to form a concrete cover plate to seal the hole.

[0021] In addition, an optional solution is that before the smoke exhaust duct is installed, a plugging template of a preset size is cut and placed on the hole formed by the floor support of the smoke duct.

[0022] In addition, an optional solution is that when installing the smoke exhaust duct, the bottom base of the smoke exhaust duct is placed into the recessed supporting area of ​​the smoke duct floor support to adjust the verticality; the recessed supporting area around the smoke exhaust duct is leveled layer by layer during the subsequent decoration process.

[0023] The above-mentioned smoke exhaust duct structure floor opening retention and construction method provided by the present invention do not require pre-embedded steel plates and welded angle steels, or embedded steel bars for floor support when retaining the smoke exhaust duct structure floor opening, and also do not require anti-corrosion painting operations on steel plates, angle steels or steel bars; there is no upper and lower gap between the smoke exhaust duct and the structure, that is, no hanging mold is required for sealing. The entire exhaust duct construction process does not require welding operations, drilling operations, or painting operations, which can effectively reduce pollution and is conducive to environmental protection management. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0025] Figure 1 A schematic diagram of a hole template structure reserved for a floor hole of a smoke exhaust duct structure according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the floor opening of the smoke exhaust duct structure according to an embodiment of the present invention;

[0027] Figure 3 It is a schematic plan view of a hole with shear walls on both sides according to the first embodiment of the present invention;

[0028] Figure 4 for Figure 3 Schematic diagram of the structure of section 1-1;

[0029] Figure 5 1-1 is a schematic diagram of the cross-sectional structure of the hole template according to the first embodiment of the present invention;

[0030] Figure 6 This is a schematic plan view of a shear wall on one side of an opening according to the second embodiment of the present invention;

[0031] Figure 7 for Figure 6 The structure of the section 2-2 is shown in the figure;

[0032] Figure 8 This is a schematic diagram of the cross-sectional structure of the 2-2 opening template of the second embodiment of the present invention;

[0033] Fig. 9 Schematic diagram of a plan view of a three-opening with no shear walls on four sides according to an embodiment of the present invention.

[0034] The reference numerals therein include: flue floor support 1, opening formwork 2, floor bottom formwork 21, snap-fit ​​portion 22, air inlet 221, supporting portion 23, formwork fixing hole 231, building main structure 10, shear wall 101, floor 102, etc.

[0035] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0036] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0037] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In order to solve the problems of many pre-processes, labor and material costs, high costs and environmental non-environmental problems existing in the construction process of smoke exhaust ducts in existing housing construction projects, the present invention provides a smoke exhaust duct structure floor opening retention and construction method thereof, through the flue floor support of the cast-in-place structure completed at the same time as the main structure of the building, and the opening template that is fitted and buckled on the flue floor support, the retention of the smoke exhaust duct structure floor opening is completed together, when the smoke exhaust duct is installed, it is only necessary to level the support area with mortar, and the depression of the support area can be filled layer by layer in the subsequent decoration process to enhance the airtightness and stability of the smoke exhaust duct. The entire construction process does not require pre-embedded steel plates and welded angle steels when retaining the smoke exhaust duct structure floor opening, or embedded steel bars for floor support, and there is no need for anti-corrosion coating of steel plates, angle steels or steel bars; there is no upper and lower gap between the smoke exhaust duct and the structure, that is, there is no need for hanging molds to seal, welding operations, drilling operations, coating operations, etc., so as to effectively reduce pollution.

[0039] In order to describe in detail the smoke exhaust duct structure floor opening retention and construction method of the present invention, the specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0040] Figures 1 to 9 The implementation scheme of retaining the floor opening of the smoke exhaust duct structure according to the embodiment of the present invention is shown from different angles.

[0041] like Figures 1 to 9 As shown together, the floor opening retention of the smoke exhaust duct structure of the embodiment of the present invention mainly includes a smoke duct floor support 1 and an opening template 2 fitted and buckled on the smoke duct floor support 1; wherein the smoke duct floor support 1 is an integral cast-in-place structure, which is constructed at the same time as the main building structure 10; the cross-sectional size of the supporting area of ​​the smoke duct floor support 1 is smaller than the cross-sectional size of the surrounding floor, and the formed opening is smaller than the inner diameter of the exhaust duct;

[0042] The opening template 2 includes a snap-fit ​​portion 22 and a supporting portion 23; wherein the snap-fit ​​portion is in contact with the flue floor support 1 and the building structure connected to the flue floor support, and the supporting portion is perpendicular to the side wall of the flue floor support and is fixedly connected to the downwardly extending end of the vertical plate of the side wall that the snap-fit ​​portion is in contact with, and is in contact with the floor bottom template.

[0043] The smoke exhaust duct structural floor opening retention provided by the embodiment of the present invention can be constructed in various structural floor openings, such as a structural floor opening with shear walls on both sides of the opening, a structural floor opening with a shear wall on one side of the opening, and a structural floor opening with no shear walls around the opening. The smoke exhaust duct structural floor opening retention scheme of the present invention will be described in detail below using these three structural openings as examples.

[0044] Example 1: Situation where both sides of the structural floor opening are shear walls

[0045] Figure 3 The floor structure plan with shear walls on both sides of the structural floor opening is shown. Figure 4 for Figure 3 1-1 cross-sectional view, Figure 5 for Figure 3 1-1 template cross-section diagram.

[0046] like Figures 3 to 5 As shown together, in the present embodiment, the opening template 2 is made of angle steel to make a shaping template according to the size of the opening, and is made of angle steel welding. The template welding should be seamless, and a template fixing hole 231 is provided at the bottom support of the template (i.e., on the supporting template 23) for fixing the supporting part 23 on the floor bottom template 21, and an air inlet hole 221 is provided on the vertical plate of the side wall of the flue floor support where the snap-fit ​​part 22 is attached. The air inlet hole 221 is preferably provided in the middle position of the vertical plate, and is used to inflate the air inlet hole 221 with an air pump when the opening template 2 is removed, and to utilize air pressure for demolding.

[0047] When installing the smoke exhaust duct, place the bottom base mortar into the recessed supporting area and adjust the verticality. The recessed supporting area around the smoke exhaust duct will be leveled layer by layer during the subsequent decoration process to further enhance the airtightness and stability of the smoke exhaust duct.

[0048] Recombination Figure 1 As shown, the buckle part 22 includes an upper horizontal plate, a lower horizontal plate, an upper side plate, and a lower side plate; wherein the vertical plate is vertically arranged between the upper horizontal plate and the lower horizontal plate; the upper side plate is vertically arranged on the side of the upper horizontal plate away from the vertical plate; and the lower side plate is vertically arranged on the side of the lower horizontal plate away from the vertical plate. In other words, the buckle part 22 is closely attached to the integrally cast flue floor support and the template of the connected building structure, so that the opening template 2 is buckled on the flue floor support and the connected building structure.

[0049] During construction, the upper part of the template can be increased to increase the height difference between the supporting area and the surrounding structure floor, so that the top of the upper side plate is higher than the ground decoration layer of the main structure of the building by a preset distance, so as to facilitate the pouring of the concrete cover plate in the later stage. This opening template is easy to make and can be used for a long time.

[0050] Before installing the exhaust duct, you only need to cut a template of appropriate size and place it on the hole formed by the flue floor support. Or when pouring concrete, use the hole to add a steel mesh and directly seal the hole with concrete to form a concrete cover. After removing the mold, place the concrete cover on the hole to form protection for the hole. When installing the exhaust duct, this cover can be used to cover the exposed earthwork in the site or pave the road. This process requires the air inlet of the template to be sealed inside and outside.

[0051] In addition, when installing the smoke exhaust duct, the bottom base of the smoke exhaust duct is placed into the recessed supporting area of ​​the smoke duct floor support to adjust the verticality; the recessed supporting area around the smoke exhaust duct is leveled layer by layer during the subsequent decoration process to further enhance the airtightness and stability of the smoke exhaust duct.

[0052] Example 2: The case where one side of the structural floor opening is a shear wall

[0053] Figure 6 The floor structure plan view shows a floor with a shear wall on one side of the structural floor opening. Figure 7 for Figure 6 The 2-2 cross-sectional view, Figure 8 for Figure 6 The 2-2 template section view, Figure 6 1-1 cross-sectional view and 1-1 template cross-sectional view and embodiment 1 Figure 3 1-1 cross-section diagram (i.e. Figure 4 ) and 1-1 template cross-section (i.e. Figure 5 )same.

[0054] like Figure 4 , Figure 5 , Figures 6 to 8 As shown together, in the present embodiment, the hole template is made of angle steel to make a shaping template according to the hole size, the welding of the hole template should be seamless, and a template fixing hole 231 is provided at the bottom support of the template (i.e., on the supporting template 23) for fixing the supporting part 23 on the floor bottom template 21, and an air inlet hole 221 is provided on the vertical plate of the side wall of the flue floor support where the snap-fit ​​part 22 is attached. The air inlet hole 221 is preferably provided in the middle position of the vertical plate, and is used to inflate the air inlet hole 221 with an air pump when the hole template 2 is removed, so as to utilize air pressure for demolding.

[0055] The buckle part also includes an upper horizontal plate, a lower horizontal plate, an upper side plate, and a lower side plate; wherein the vertical plate is vertically arranged between the upper horizontal plate and the lower horizontal plate; the upper side plate is vertically arranged on the side of the upper horizontal plate away from the vertical plate; and the lower side plate is vertically arranged on the side of the lower horizontal plate away from the vertical plate. That is, the buckle part 22 is closely attached to the integrally cast flue floor support and the template of the connected building structure, so that the opening template 2 is buckled on the flue floor support and the connected building structure.

[0056] During construction, the upper height of the formwork can also be increased to increase the height difference between the supporting area and the surrounding structural floor, so that the top of the upper side plate is higher than the ground decoration layer of the main structure of the building by a preset distance to facilitate the subsequent pouring of the concrete cover plate.

[0057] When installing the smoke exhaust duct, you can put the bottom base mortar into the recessed supporting area and adjust the verticality. The recessed supporting area around the smoke exhaust duct will be leveled layer by layer during the subsequent decoration process to further enhance the airtightness and stability of the smoke exhaust duct.

[0058] Before installing the exhaust duct, the hole only needs to be cut into a template of appropriate size and placed on it. Or when pouring concrete, add a steel mesh to the hole and directly seal the hole with concrete to form a concrete cover. After removing the formwork, place the concrete cover on the hole to protect the hole. When installing the exhaust duct, this cover can be used to cover the exposed earthwork in the site or pave the road. In this process, the air inlet of the template needs to be sealed inside and outside.

[0059] Example 3: There are no shear walls around the structural floor opening

[0060] Fig. 9 The floor structure plan with shear walls on both sides of the structural floor opening is shown. Fig. 9 3-3 cross-sectional view and 3-3 template cross-sectional view and embodiment 2 Figure 6 The 2-2 cross-section diagram (i.e. Figure 7 ) and 2-2 template cross-section (i.e. Figure 8 )same.

[0061] The structure of the opening template in this embodiment is the same as that of the opening template in Embodiment 1 and Embodiment 2, and will not be described in detail here.

[0062] The construction method for retaining the floor opening of the smoke exhaust duct structure comprises the following steps:

[0063] S120: When constructing the main structure of the building, the flue floor support is constructed at the structural floor opening at the same time;

[0064] S140: making a hole template according to the size of the hole formed by the flue floor support.

[0065] More specifically, in a specific embodiment of the present invention, before the smoke exhaust duct is installed, a steel mesh can be covered on the hole formed by the flue floor support, and then concrete is poured on the steel mesh to form a concrete cover plate for sealing the hole; or a sealing template of a preset size can be pre-cut and placed on the hole formed by the flue floor support.

[0066] When installing the smoke exhaust duct, the bottom base mortar of the smoke exhaust duct is placed into the concave supporting area of ​​the smoke duct floor support to adjust the verticality; the concave supporting area around the smoke exhaust duct is leveled layer by layer during the subsequent decoration process.

[0067] A more specific implementation of the construction method for leaving a hole in the floor slab of the above-mentioned smoke exhaust duct structure can refer to the above-mentioned embodiment of leaving a hole in the floor slab of the smoke exhaust duct structure.

[0068] It can be seen from the above embodiments that the smoke exhaust duct structure floor opening retention and construction method provided by the present invention can complete the smoke duct floor support at one time during the construction of the main structure. The smoke duct floor support and the main structure of the building are cast-in-place as a whole. The cross-sectional size of the supporting area is smaller than the cross-sectional size of the surrounding floor. The formed opening is slightly smaller than the inner diameter of the smoke exhaust duct. When installing the smoke exhaust duct, it is only necessary to level the supporting area with mortar. The depression in the supporting area can be filled layer by layer in the subsequent decoration process to enhance the airtightness and stability of the smoke exhaust duct.

[0069] The present invention solves the problem that a pre-buried steel plate is required when leaving the opening of the exhaust duct structure floor and that angle steel needs to be welded for floor support during the later installation of the exhaust duct, solves the problem that steel bars need to be planted for floor support during the later installation of the exhaust duct at the opening of the exhaust duct structure floor, solves the problem of anti-corrosion coating of steel plates, angle steels or steel bars, solves the problem that the gap between the exhaust duct and the reserved opening of the structure needs to be sealed with a hanging mold, enhances the safety protection effect before the installation of the exhaust duct at the reserved opening of the structure, and improves the effectiveness of the airtight installation of the exhaust duct. At the same time, the installation process does not involve welding, drilling, or painting operations, which can reduce pollution and is conducive to environmental protection.

[0070] As described above, the smoke exhaust duct structure floor opening retention and the construction method thereof according to the present invention are described by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the smoke exhaust duct structure floor opening retention and the construction method thereof proposed in the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A smoke exhaust duct structure floor opening retention, characterized in that: It includes a flue floor support and a hole template that is fitted and buckled on the flue floor support; wherein, The flue floor support is an integral cast-in-place structure, which is constructed at the same time as the main structure of the building; The cross-sectional dimensions of the supporting area of ​​the flue floor support are smaller than the cross-sectional dimensions of the surrounding floor slabs, and the opening formed is smaller than the inner diameter of the exhaust flue; The opening template includes a snap-fitting portion and a supporting portion; wherein the snap-fitting portion is in contact with the flue floor support and the building structure connected to the flue floor support; the supporting portion is perpendicular to the side wall of the flue floor support and is fixedly connected to the downwardly extending end of the vertical plate of the side wall that the snap-fitting portion is in contact with, and is in contact with the floor bottom template.

2. The smoke exhaust duct structure floor opening retention according to claim 1 is characterized in that: The opening template is a standardized template made by welding angle steel according to the size of the opening.

3. The smoke exhaust duct structure floor opening retention according to claim 1 is characterized in that: An air inlet hole is arranged on the vertical plate where the buckling part is attached to the side wall, and the air inlet hole is used to inflate when the hole template is removed so as to utilize air pressure for demoulding.

4. The smoke exhaust duct structure floor opening retention according to claim 1 is characterized in that: A template fixing hole is arranged on the supporting part, and the template fixing hole is used to fix the supporting part on the floor bottom formwork.

5. The smoke exhaust duct structure floor opening retention according to any one of claims 1 to 4, characterized in that: The buckling part also includes an upper horizontal plate, a lower horizontal plate, an upper side plate, and a lower side plate; wherein, The vertical plate is vertically arranged between the upper horizontal plate and the lower horizontal plate; The upper side plate is vertically arranged on a side of the upper horizontal plate away from the vertical plate; The lower side plate is vertically arranged on a side of the lower horizontal plate away from the vertical plate.

6. The smoke exhaust duct structure floor opening retention according to claim 5 is characterized in that: The top end of the upper side plate is higher than the ground decoration layer of the main structure of the building by a preset distance.

7. A construction method for retaining a floor opening of a smoke exhaust duct structure, characterized in that: Used for constructing the floor opening retention of the smoke exhaust duct structure as claimed in any one of claims 1 to 6; the method comprises: When constructing the main structure of the building, the flue floor support is constructed at the structural floor opening at the same time; A hole template is made according to the size of the hole formed by the flue floor support.

8. The construction method for retaining a floor opening of a smoke exhaust duct structure according to claim 7 is characterized in that: Before the smoke exhaust duct is installed, a steel mesh is covered on the opening formed by the floor support of the smoke duct, and then concrete is poured on the steel mesh to form a concrete cover plate for sealing the opening.

9. The construction method for retaining a floor opening of a smoke exhaust duct structure according to claim 8 is characterized in that: Before the smoke exhaust duct is installed, a plugging template of a preset size is cut and placed on the hole formed by the floor support of the smoke duct.

10. The construction method for retaining a floor opening of a smoke exhaust duct structure according to claim 8, characterized in that: When installing the smoke exhaust duct, the bottom base mortar of the smoke exhaust duct is placed into the concave supporting area of ​​the smoke duct floor support to adjust the verticality; the concave supporting area around the smoke exhaust duct is leveled layer by layer during the subsequent decoration process.

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