CN108756034B - Overhead structure terrace and construction method thereof - Google Patents
Overhead structure terrace and construction method thereof Download PDFInfo
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- CN108756034B CN108756034B CN201810448264.1A CN201810448264A CN108756034B CN 108756034 B CN108756034 B CN 108756034B CN 201810448264 A CN201810448264 A CN 201810448264A CN 108756034 B CN108756034 B CN 108756034B
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- overhead
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to an overhead structure terrace and a construction method thereof, wherein the overhead structure terrace comprises a cushion layer paved on an undisturbed soil layer, and a plurality of girder steel bars are arranged on the cushion layer; the construction grid is internally connected with a plurality of rib beam steel bars which are crisscrossed and form a plurality of sub-construction grids, the sub-construction grids are internally provided with prefabricated overhead mould shells, the lower surfaces of the overhead mould shells are abutted with the cushion layers, and the lower surfaces of the overhead mould shells are provided with concave overhead cavities; the construction grid is also internally connected with a reinforcing mesh, the reinforcing mesh is connected with the upper ends of the rib beam reinforcing steel bars in the construction grid, and concrete slurry is poured between and above the overhead shuttering. The invention has high structural stability, is beneficial to improving and ensuring the construction efficiency and quality, does not need to be erected for supporting other frame bodies during construction by using the overhead shuttering, simplifies the construction process, saves materials, further improves the construction efficiency, and can well meet the functional requirements of terrace vibration reduction, noise reduction, moisture prevention and the like.
Description
Technical Field
The invention belongs to the technical field of general building construction in a building, and particularly relates to an overhead structure terrace and a construction method thereof.
Background
The terrace is the part where the bottom room contacts with the soil layer, bears the load of the bottom room, and is required to have certain strength and rigidity, and has the performances of moisture resistance, water resistance, heat preservation and wear resistance; conventional terrace layer includes plain soil ramming layer, bed course, structural layer and surface course from bottom to top, and conventional overhead construction terrace and construction thereof need to increase support body support (such as scaffold, template etc.) in structural layer, and construction speed is slow, and construction quality is difficult to obtain better assurance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the terrace with the overhead structure and the construction method thereof, which avoid the problems of complex construction, low construction efficiency and difficult guarantee of terrace quality, obtain the functional requirements of terrace vibration reduction, noise reduction and moisture prevention, facilitate construction and provide the effects of construction efficiency and quality.
In order to solve the technical problems, the invention adopts the following technical scheme:
The overhead structure terrace comprises a cushion layer paved on an undisturbed soil layer, wherein a plurality of girder steel bars are arranged on the cushion layer; the construction grid is internally connected with a plurality of rib beam steel bars which are crisscrossed to divide the construction grid into a plurality of sub-construction grids, the sub-construction grids are internally provided with prefabricated overhead formworks, the lower surfaces of the overhead formworks are abutted with the cushion layer, and the lower surfaces of the overhead formworks are provided with concave overhead cavities;
The construction grid is internally connected with a reinforcing mesh, and the reinforcing mesh is connected with the upper ends of the rib beam reinforcing steel bars in the construction grid and is positioned above the overhead shuttering.
In the construction process of the terrace, the main girder steel bars are bound on the cushion layer and are crisscrossed to form a plurality of construction grids, the construction of the overhead structural terrace is divided into corresponding small modules, the small modules are internally connected with the rib girder steel bars, the steel bar meshes, the overhead formwork and other structural constructions, the structural stability is high, the construction progress and the quality among the small modules are not affected, the independent construction and the monitoring are convenient, and the improvement and the guarantee of the construction efficiency and the quality are facilitated; the overhead shuttering is a prefabricated forming part, the quality is convenient to control, the overhead shuttering is directly paved on a cushion layer during construction, other frame body supports are not required to be erected, the construction process is simplified, materials are saved, the construction efficiency is further improved, and the functional requirements of terrace vibration reduction, noise reduction, moisture prevention and the like can be well met.
Further perfecting the technical scheme, the number of the built-in overhead shuttering in each sub-construction grid is one, and the overhead shuttering is a quadrangular frustum-shaped thin-wall piece.
Thus, the appearance of the overhead shuttering can be corresponding to the square sub-construction grid, and the overhead space is increased; the rib beam steel bars are arranged in the rib beam grooves formed between the side walls of the adjacent overhead formworks, so that the rib beam steel bars and the overhead formworks are positioned mutually, the construction space is fully utilized, the rib beam grooves are widened gradually from bottom to top, and the structural strength is facilitated; the hollow quadrangular frustum-shaped thin-wall part is convenient for overlapping stacking when the overhead shuttering is not used for floor construction and laying, and the problem that a large-area stacking space is required in the prefabricating and stacking process is solved.
Further, the adjacent side surfaces of the overhead shuttering and all the side surfaces and the top surface are in arc transition connection.
Thus, the strength of the overhead shuttering is increased, the bearing capacity of the overhead shuttering is improved, and the overhead shuttering is prevented from being damaged due to stress concentration during bearing; the load which can be born on the overhead shuttering is controlled to be more than 2.5 KN/square meter, and the weight of constructors, reinforcing steel meshes and concrete slurry poured in the later stage can be born in the construction process.
Further, the lower edge of the side face of the overhead shuttering continues to extend outwards horizontally to form a flanging and the outer contour of the lower surface of the overhead shuttering is square.
Therefore, the overhead shuttering is placed on the cushion layer more stably, the area of the lower surface of the overhead shuttering, which is abutted against the cushion layer, is larger, and seepage into the overhead cavity during concrete slurry pouring can be better prevented; in addition, when the overhead shuttering is not used for terrace construction and laying and is in an overlapped stacking state, the flanging part is convenient to serve as an acting point, and the overlapped and stacked overhead shuttering is convenient to separate.
Further, the overhead shuttering is an integrated concrete mold.
Therefore, the manufacturing is simple, the integrity is good, the strength of the overhead shuttering is improved to meet the design requirement that the bearing capacity should be controlled to be more than 2.5 KN/square meter, the sealing performance is good, the forming consistency is high, and the construction size control and stacking are convenient.
And further, the concrete slurry poured between and above the overhead formworks is further included so as to connect the girder steel bars, the rib girder steel bars and the steel bar meshes into a whole after solidification.
Thus, the integral structure is formed, and the concrete slurry can be uniformly cast in situ in a large area during concrete construction, and can be constructed in a mode of cast-in-situ and then post-connection by small modules.
The invention also relates to a construction method of the overhead structure terrace, which comprises the following construction steps:
S1, leveling an undisturbed soil layer;
S2, pouring a cushion layer, and polishing the primary slurry on the upper surface of the cushion layer;
S3, marking the positions of the longitudinal and transverse girder steel bars and the positions of the longitudinal and transverse rib girder steel bars on the cushion layer according to the design and arrangement requirements of the steel bars, wherein the positions of the longitudinal and transverse rib girder steel bars are the placement positions of the overhead shuttering;
s4, paving girder steel bars according to the identification positions and forming a plurality of construction grids;
s5, paving all corresponding overhead formworks in the construction grid;
s6, paving rib beam steel bars between the overhead formworks in the construction grid, wherein the upper ends of the rib beam steel bars are higher than the overhead formworks;
S7, paving a reinforcing mesh in the construction grid, wherein the reinforcing mesh is connected with the upper ends of the rib beam reinforcing steel bars in the construction grid and is positioned above the overhead shuttering;
S8, pouring concrete slurry; and pouring concrete slurry between and above the overhead formworks to connect the girder steel bars, the rib girder steel bars and the steel bar meshes into a whole after solidification.
Further perfecting the method, in step S3, the method for marking the positions of the longitudinal and transverse main beam steel bars and the positions of the longitudinal and transverse rib beam steel bars on the cushion layer is to use carpenter's line marker to pop ink lines on the cushion layer for marking.
Thus, the identification of the vertical and horizontal straight line identification lines is convenient, and the method is simple and reliable.
Further, two ends of the rib beam steel bars are connected with the corresponding main beam steel bars; the periphery of the reinforcing mesh is connected with the corresponding girder reinforcing steel bars.
Therefore, the terrace has better integrity and higher structural stability.
Compared with the prior art, the invention has the following beneficial effects:
1. According to the invention, the construction of the overhead structure terrace is divided into small modules through the main beam steel bars, and the small modules are internally connected with the rib beam steel bars, the steel bar net sheets, the overhead shuttering and other structure constructions, so that the structural stability is high; the construction progress and quality among the small modules are not affected, so that independent construction and monitoring are facilitated, and improvement and guarantee of construction efficiency and quality are facilitated.
2. The overhead shuttering is an integrally prefabricated molding piece, has high strength and good sealing performance, is convenient to control the quality, can be directly paved on a cushion layer during construction, does not need to be erected for supporting other frame bodies, simplifies the construction process, saves materials, further improves the construction efficiency, and can well meet the functional requirements of terrace vibration reduction, noise reduction, moisture prevention and the like.
3. The rib beam steel bars and the overhead shuttering are mutually limited and positioned, the construction space is fully utilized, and the rib beam grooves are gradually widened from bottom to top, thereby being beneficial to the structural strength.
4. The overhead shuttering is convenient for stacking when not used for floor construction and laying, and is convenient for separation after overlapping stacking.
Drawings
Fig. 1-schematic top view of an overhead structure terrace of the present invention (for convenience of illustration, reinforcing steel meshes and concrete slurry are omitted);
FIG. 2-schematic cross-sectional view of an overhead structural floor of the present invention;
The concrete slab comprises an undisturbed soil layer 1, a bedding layer 2, main girder steel bars 3, a construction grid 31, rib girder steel bars 4, sub construction grids 41, an overhead formwork 5, a frame cavity 51, an arc transition 52, a flange 53, a rib girder groove 54, a steel bar net sheet 6 and concrete grout 7.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Referring to fig. 1 and 2, an overhead structure terrace of a specific embodiment includes a bedding layer 2 laid on an undisturbed soil layer 1, a plurality of girder steel bars 3 are arranged on the bedding layer 2, and the girder steel bars 3 are erected on the bedding layer 2 through a plurality of cushion blocks (not shown in the figure); the girder steel bars 3 are crisscrossed to form a plurality of construction grids 31, a plurality of rib steel bars 4 which are crisscrossed and form a plurality of sub construction grids 41 are connected in the construction grids 31, and the rib steel bars 4 are also erected on the cushion layer 2 through a plurality of cushion blocks (not shown in the figure); in fig. 1, a construction grid 31 surrounded by girder steel bars 3 in this embodiment is illustrated, and thirty sub-construction grids 41 are provided in the construction grid 31.
The sub construction grid 41 is internally provided with a prefabricated overhead mould shell 5 correspondingly, the lower surface of the overhead mould shell 5 is abutted against the cushion layer 2, and the lower surface of the overhead mould shell 5 is provided with a concave overhead cavity 51; in this embodiment, the overhead shuttering 5 is a rectangular frustum-shaped thin wall member and is an integrally formed concrete mold, a rib beam groove 54 is formed between the side walls of adjacent overhead shuttering 5, and the rib beam steel bars 4 are correspondingly arranged in the rib beam groove 54, so that the rib beam steel bars 4 and the overhead shuttering 5 are mutually limited and positioned; the two ends of the rib beam steel bars 4 are bound and connected or welded with the corresponding main beam steel bars 3; the construction grid 31 is internally connected with a reinforcing mesh 6, and the reinforcing mesh 6 is connected with the upper ends of all rib beam reinforcing steel bars 4 in the construction grid 31 in a binding way or welded and is positioned above the overhead shuttering 5 in the construction grid 31; the periphery of the reinforcing mesh 6 is bound and connected or welded with the corresponding girder reinforcing steel 3. Concrete slurry 7 is poured between and above the overhead shuttering 5, and the pouring level of the concrete slurry 7 is higher than that of each steel bar to connect the girder steel bars 3, the rib beam steel bars 4 and the steel bar net 6 into a whole after solidification. In the construction process of the terrace of the specific embodiment, each construction grid 31 is a small construction module, the construction progress and quality among the construction grids 31 are not affected, independent construction and monitoring are convenient, and improvement and guarantee of construction efficiency and quality are facilitated; the overhead shuttering 5 is simple in manufacture, good in integrity, simple in construction process, capable of reducing construction equipment, further improving construction efficiency and capable of well meeting functional requirements of terrace vibration reduction, noise reduction, moisture prevention and the like.
Wherein, the adjacent side surfaces of the overhead shuttering 5 and all the side surfaces and the top surface are connected by arc transition 52; the lower edge of the side surface of the overhead mould shell 5 continues to extend outwards horizontally to form a flanging 53 and the outer contour of the lower surface of the overhead mould shell 5 is square. Thus, the strength of the overhead shuttering 5 can be increased, the bearing capacity of the overhead shuttering 5 can be improved, and the overhead shuttering 5 is prevented from being damaged due to stress concentration during bearing; the overhead shuttering 5 is arranged on the cushion layer 2 more stably, the area of the lower surface of the overhead shuttering is larger than the area of the cushion layer 2, the seepage into the overhead cavity 51 can be prevented better when the concrete slurry 7 is poured, and the tightness is good.
The construction method of the overhead structure terrace comprises the following construction steps:
1) Leveling an undisturbed soil layer 1; compacting or tamping the undisturbed soil to ensure that the compactness meets the design requirement, and simultaneously carrying out fine leveling to the bottom elevation of the cushion layer 2;
2) Pouring a cushion layer 2; when the C20 concrete cushion layer 2 with the thickness of 10cm is fully hit and the primary pulp on the upper surface is polished, the flatness requirement of the structural terrace is higher, if the cushion layer 2 is not polished by primary pulp, the flatness can not meet the requirement, and the flatness and elevation of the structural terrace and the thickness of the protective layer at the bottom of the beam can be influenced;
3) According to the design and arrangement requirements of the steel bars, carpenter's line marker and elastic wires are placed on the cushion layer 2, the positions of the longitudinal and transverse girder steel bars 3 are marked by the ink wires, the positions of the longitudinal and transverse rib girder steel bars 4 are marked, and the placement positions of the overhead shuttering 5 are arranged between the positions of the longitudinal and transverse rib girder steel bars 4;
4) Paving and binding girder steel bars 3 according to the marked positions of the longitudinal and transverse girder steel bars 3 to form a plurality of construction grids 31;
5) Paving all overhead formworks 5 at the positions which are marked in advance in step 3) in each construction grid 31 by taking the construction grid 31 as a unit;
6) The construction grid 31 is taken as a unit, and rib steel bars 4 are paved and bound in criss-cross rib beam grooves 54 formed after all overhead formworks 5 are paved; the upper ends of the rib beam steel bars 4 are higher than the overhead shuttering 5; the two ends of the rib beam steel bars 4 are bound and connected or welded with the corresponding main beam steel bars 3;
7) Paving and binding a reinforcing steel bar net sheet 6; a piece of reinforcing mesh 6 is paved in each construction grid 31, the reinforcing mesh 6 is positioned above the rib beam reinforcing steel bars 4 and the overhead shuttering 5, and the reinforcing mesh 6 is bound and connected or welded with the upper ends of the rib beam reinforcing steel bars 4 in the construction grids 31; the periphery of the reinforcing mesh 6 is bound and connected or welded with the corresponding girder reinforcing steel bars 3;
When in implementation, steel bars with the diameters of fourteen millimeters and below are bound between the steel bar joints, and welding is adopted for the steel bars with the diameters of more than fourteen; when binding, steel bars with the diameters of fourteen millimeters and below are bound by thin iron wires, and steel bars with the diameters of more than fourteen are bound by thick iron wires;
8) Paving an embedded pipeline; pre-burying a water wire pipe according to a design drawing, and rechecking before concrete pouring;
9) Pouring concrete slurry 7 and vibrating; the casting elevation is higher than that of each steel bar, the concrete pump pipe and the spreader cannot be directly placed on the steel bar net sheet 6 above the overhead mould shell 5, and when the concrete slurry 7 is cast, the vibrating rod is prevented from contacting the overhead mould shell 5 to vibrate.
When the concrete pouring method is implemented, pouring of the concrete slurry 7 is carried out according to the designed area, wherein the area can be a plurality of adjacent construction grids 31, or can be a whole structure terrace, and corresponding templates are correspondingly inserted or placed around the designed pouring area so as to limit the flow of the concrete slurry 7.
Since the above steps 5) to 7) are independently performed in each construction grid 31, the operators can be divided into several groups, and several groups are simultaneously constructed in different construction grids 31, so that the construction efficiency can be greatly improved, which is why each construction grid 31 is further subdivided by the rib beam steel bars 4 after forming several construction grids 31 by the main beam steel bars 3.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. The overhead structure terrace comprises a cushion layer (2) paved on an undisturbed soil layer (1), wherein a plurality of girder steel bars (3) are arranged on the cushion layer (2); the method is characterized in that: the construction method comprises the steps that a plurality of construction grids (31) are formed by crisscross of the girder steel bars (3), each construction grid (31) is connected with a plurality of rib girder steel bars (4) which are crisscross to divide the construction grids (31) into a plurality of sub construction grids (41), a prefabricated overhead formwork (5) is arranged in each sub construction grid (41), the lower surface of each overhead formwork (5) is abutted to the cushion layer (2), and a concave overhead cavity (51) is formed in the lower surface of each overhead formwork (5);
The construction grid (31) is internally connected with a reinforcing mesh (6), and the reinforcing mesh (6) is connected with the upper ends of the rib beam reinforcing steel bars (4) in the construction grid (31) and is positioned above the overhead shuttering (5);
The number of the overhead shuttering (5) is one in each sub construction grid (41), and the overhead shuttering (5) is a quadrangular frustum-shaped thin-wall piece;
the lower edge of the side surface of the overhead mould shell (5) continues to extend outwards horizontally to form a flanging (53) and the outer contour of the lower surface of the overhead mould shell (5) is square;
and rib beam grooves (54) are formed between the side walls of adjacent overhead formworks (5), the rib beam steel bars (4) are correspondingly arranged in the rib beam grooves (54), and the rib beam grooves (54) are gradually widened from bottom to top.
2. The overhead structural terrace according to claim 1, wherein: and the adjacent side surfaces of the overhead shuttering (5) and all the side surfaces and the top surface are connected by arc transition (52).
3. The overhead structural terrace according to claim 1 or 2, characterized in that: the overhead shuttering (5) is an integrated concrete mold.
4. An overhead structural terrace according to claim 3, characterized in that: the concrete grouting device further comprises concrete grout (7) which is poured between and above the overhead formworks (5) to connect the girder steel bars (3), the rib beam steel bars (4) and the steel bar meshes (6) into a whole after solidification.
5. A construction method of an overhead structure terrace is characterized by comprising the following steps: the overhead structure terrace constructed by the method is the overhead structure terrace according to any one of claims 1 to 4, and comprises the following construction steps:
S1, leveling an undisturbed soil layer (1);
s2, pouring the cushion layer (2) and polishing primary pulp on the upper surface of the cushion layer (2);
s3, marking the positions of the longitudinal and transverse girder steel bars (3) and the positions of the longitudinal and transverse rib steel bars (4) on the cushion layer (2) according to the design and arrangement requirements of the steel bars, wherein the positions of the longitudinal and transverse rib steel bars (4) are the placement positions of the overhead shuttering (5);
S4, paving all girder steel bars (3) according to the identification positions and forming a plurality of construction grids (31);
S5, paving all corresponding overhead formworks (5) in the construction grid (31);
s6, paving rib beam steel bars (4) between the overhead formworks (5) in the construction grid (31), wherein the upper ends of the rib beam steel bars (4) are higher than the overhead formworks (5);
s7, paving a reinforcing mesh (6) in the construction grid (31), wherein the reinforcing mesh (6) is connected with the upper end of the rib beam reinforcing steel bar (4) in the construction grid (31) and is positioned above the overhead shuttering (5);
S8, pouring concrete slurry (7); and pouring concrete slurry (7) between and above the overhead formworks (5).
6. The construction method of the overhead structure terrace according to claim 5, wherein the construction method comprises the following steps: in step S3, the method of marking the positions of the girder steel bars (3) in the longitudinal and the transverse directions and the positions of the rib steel bars (4) in the longitudinal and the transverse directions on the cushion layer (2) is to use carpenter's line marker to pop out ink lines on the cushion layer (2) for marking.
7. The construction method of the overhead structure terrace according to claim 5, wherein the construction method comprises the following steps: the two ends of the rib beam steel bars (4) are connected with the corresponding main beam steel bars (3).
8. The construction method of the overhead structure terrace according to claim 5, wherein the construction method comprises the following steps: the periphery of the reinforcing mesh (6) is connected with the corresponding girder reinforcing steel bars (3).
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| CN201810448264.1A CN108756034B (en) | 2018-05-11 | 2018-05-11 | Overhead structure terrace and construction method thereof |
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| CN201810448264.1A CN108756034B (en) | 2018-05-11 | 2018-05-11 | Overhead structure terrace and construction method thereof |
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| CN108756034A CN108756034A (en) | 2018-11-06 |
| CN108756034B true CN108756034B (en) | 2024-06-18 |
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| CN113622452A (en) * | 2021-08-13 | 2021-11-09 | 浙江省建工集团有限责任公司 | Construction method of refrigeration house terrace and refrigeration house terrace |
| CN114592632B (en) * | 2022-01-20 | 2024-06-11 | 山东神亿源环境科技有限公司 | Hollow floor system supported by steel net-shaped body combination |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631677A (en) * | 2015-01-21 | 2015-05-20 | 广东省建筑工程集团有限公司 | Construction technology for hollow super-thick concrete terrace |
| CN208168088U (en) * | 2018-05-11 | 2018-11-30 | 中冶建工集团有限公司 | Aerial construction terrace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08189125A (en) * | 1994-12-29 | 1996-07-23 | Yaguchi Kenzai Kako Kk | Slab structure and construction method thereof |
| CN203270890U (en) * | 2013-04-27 | 2013-11-06 | 杨众 | Heavy-load superposed overhead terrace |
| CN103233537B (en) * | 2013-04-27 | 2016-12-28 | 杨众 | Heavy load overlapping overhead terrace and construction method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631677A (en) * | 2015-01-21 | 2015-05-20 | 广东省建筑工程集团有限公司 | Construction technology for hollow super-thick concrete terrace |
| CN208168088U (en) * | 2018-05-11 | 2018-11-30 | 中冶建工集团有限公司 | Aerial construction terrace |
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