CN113585769A - Method for installing closed space of assembled bare concrete horizontal component - Google Patents
Method for installing closed space of assembled bare concrete horizontal component Download PDFInfo
- Publication number
- CN113585769A CN113585769A CN202110995795.4A CN202110995795A CN113585769A CN 113585769 A CN113585769 A CN 113585769A CN 202110995795 A CN202110995795 A CN 202110995795A CN 113585769 A CN113585769 A CN 113585769A
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- concrete horizontal
- horizontal prefabricated
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- hoisting
- bare concrete
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- 239000004567 concrete Substances 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 238000009434 installation Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 4
- 210000003205 muscle Anatomy 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- -1 tile sticking Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a method for installing an enclosed space of an assembled bare concrete horizontal prefabricated part, which comprises the following steps: (1) arranging an embedded part; (2) setting a hoisting point; (3) hoisting bare concrete; (4) the main body structure is connected with the screw rod; (5) the main structure connecting screw is connected with the bare concrete horizontal prefabricated component; (6) the connection point mortar plugging adopts the technical means, solves the problem of connection between the fair-faced concrete horizontal prefabricated component and the main structure, solves the hoisting problem by utilizing the connection point, avoids the repeated arrangement of hoisting rings or hoisting holes and the workload of later repair treatment, and ensures the appearance effect of the fair-faced concrete horizontal prefabricated component.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a method for installing an enclosed space of an assembled bare concrete horizontal member.
Background
In the current modern construction of China, a building assembly type is an important measure for promoting the building construction level and the building quality and driving the transformation upgrading and the high-quality development of the building industry, as the bare concrete prefabricated component is used as an assembly type building component, the original forming effect of concrete is directly shown as the concrete surface does not have any material such as coating, tile sticking, stone sticking and the like, the natural and simple aesthetic feeling of a building is shown and is more and more generally accepted, but the problems that the assembly type bare concrete horizontal component is hoisted to ensure the protection of a component finished product and the bare concrete horizontal component is installed in a closed space become problems which are urgently needed to be solved in the application and popularization of the assembly type bare concrete.
Disclosure of Invention
In order to solve the technical problem, the invention discloses a method for installing an enclosed space of an assembled bare concrete horizontal member.
The invention is implemented by the following technical scheme:
the invention provides a method for installing an enclosed space of an assembled fair-faced concrete horizontal component, which comprises the following steps:
the first step is as follows: the method comprises the steps of arranging an embedded part, welding the embedded part and tie bars to form a whole, arranging threads on the inner side of an embedded part hole, embedding the embedded part into the fair-faced concrete horizontal prefabricated part according to the size of the fair-faced concrete horizontal prefabricated part, wherein the embedded part is accurate, fixed firmly and totally four, distributed at the four corners of the end part of the fair-faced concrete horizontal prefabricated part, and pouring after the completion of the embedding of the fair-faced concrete horizontal prefabricated part.
The second step is that: and screwing the bare concrete horizontal member hoisting ring into the screw hole on the inner side of the embedded part for hoisting the bare concrete horizontal prefabricated member. The lifting adopts a steel frame to set lifting lugs, adopts a steel wire rope up and down, and is connected with a lifting ring and a lifting hook.
The third step: the upper portion of the main steel structure beam is provided with a bare concrete fixing screw, the bare concrete fixing screw is positioned according to the position of the bare concrete horizontal prefabricated part embedded part, the bare concrete horizontal prefabricated part embedded part is welded on the main steel structure beam after the positioning is finished, and the bare concrete horizontal prefabricated part fixing screw is arranged on the main steel beam according to the position of the embedded part.
The fourth step: the lower part of the fixing screw rod of the bare concrete prefabricated part is provided with gaskets of different specifications, and the thickness of each end gasket is adjusted by using a level gauge, so that each end gasket is ensured to be at the same elevation.
The fifth step: and hoisting the bare concrete horizontal prefabricated part by using the hoisting ring, and after the hollow area of the hoisting rod in the hoisting ring is aligned with the fixing screw rod of the bare concrete prefabricated part, putting down the bare concrete horizontal prefabricated part to support the bare concrete horizontal prefabricated part on the gasket.
And a sixth step: and taking down the hoisting ring of the bare concrete horizontal prefabricated component, and sealing the gap between the embedded part and the fixing screw rod of the bare concrete horizontal prefabricated component tightly by adopting mortar.
The seventh step: and after the gasket is arranged again, the nut matched with the fixing screw rod of the bare concrete horizontal prefabricated part is screwed into the fixing screw rod, so that the main steel structure beams of the bare concrete horizontal prefabricated part are connected into a whole.
Eighth step: and after the seven steps are finished, the bell mouth is sealed by adopting mortar.
According to the further technical scheme, the height of the embedded part is 1/2 of the thickness of the bare concrete member, the embedded part is arranged at each of the four corner ends of the bare concrete horizontal prefabricated member, and the distance between the embedded part and the edge of the bare concrete horizontal prefabricated member is 200 mm.
According to the further technical scheme, the tie bars are round steel, the ends of the tie bars are hooks of 180 degrees, the tie bars are welded with embedded parts, and four tie bars are arranged.
According to the further technical scheme, a horn mouth is formed in the end part of the embedded part of the bare concrete horizontal prefabricated part, and the angle of the horn mouth is 45 degrees with the horizontal direction.
According to the technical scheme, the upper portion of the hoisting ring of the member is an arc hoisting point, the lower portion of the hoisting ring is a hoisting rod which is hollow, the height of a hollow area is higher than the thickness of the fair-faced concrete horizontal prefabricated member, the outer side of the hollow area is a thread which is matched with the thread on the inner side of the embedded part, and the depth of the hoisting ring screwed into the embedded part cannot exceed the bottom of the fair-faced concrete horizontal prefabricated member.
According to the further technical scheme, the total length of the bare concrete fixing screw is equal to the thickness of the bare concrete horizontal prefabricated component.
In a further technical scheme, the nut connected with the fixing screw rod adopts double nuts.
According to a further technical scheme, the appearance color of the formed mortar is consistent with that of the assembled bare concrete horizontal member.
The invention has the beneficial effects that:
the method is characterized in that the bare concrete horizontal prefabricated part is produced, reserved and embedded in a closed space area of the bare concrete horizontal prefabricated part, hoisting construction is carried out, and installation is finished in a closed space of a steel structure beam.
Description of the drawings:
FIG. 1 is a schematic diagram of installation and hoisting of an embedded part of a horizontal precast concrete component according to the invention.
Fig. 2 is a schematic diagram of hoisting a horizontal precast member in bare concrete according to the invention.
Fig. 3 is a schematic diagram of reinforcement and plugging after the installation of the horizontal bare concrete prefabricated part according to the invention.
Reference numerals: 1-embedded parts; 2-tie the tendon; 3-fixing the screw rod; 4-hoisting rings; 5-horizontal precast member of fair-faced concrete; 6-main steel structure beam; 7-a gasket; 8-a nut; 9-mortar; 10-a steel wire rope; 11-hoisting the steel frame; 12-a lifting lug; 13-hook.
Detailed Description
The invention is further illustrated by the following examples:
as shown in fig. 1 to 3, example 1: the invention provides an installation method of a closed space of an assembled fair-faced concrete horizontal member, which comprises two parts, namely a prefabricated fair-faced concrete horizontal prefabricated member 5 and a main steel structural beam 6, wherein the size and the shape of the main steel structural beam 6 are the same as those of the prefabricated fair-faced concrete horizontal prefabricated member 5, the prefabricated fair-faced concrete horizontal prefabricated member 5 is rectangular or square, embedded parts 1 are arranged at more than three corners, the embedded parts 1 are arranged at four corners, the number of the corners of the embedded parts 1 is the same and are distributed at the end parts of the four corners of the fair-faced concrete horizontal prefabricated member 5, the embedded parts 1 are convenient to hoist in parallel, four embedded parts 1 are arranged around the embedded parts 1 to hoist in parallel, and the installation of the fair-faced concrete horizontal prefabricated member 5 on the main steel structural beam 6 is completed by pouring.
The bare concrete horizontal prefabricated part 5 comprises an embedded part 1 tie bar 2 and a hoisting ring 4, the embedded part 1 and the tie bar 2 are welded to form a whole body to enhance the stability of the embedded part 1, threads are arranged on the inner side of the embedded part 1 hole, the hoisting ring 4 and external threads are screwed into screw holes in the inner side of the embedded part 1 and used for hoisting the bare concrete horizontal prefabricated part 5, the hoisting bare concrete horizontal prefabricated part 5 adopts a hoisting steel frame 11 to set a lifting lug 12, a steel wire rope 10 is vertically adopted and is connected with the hoisting ring 4 and a lifting hook 13, the hoisting steel frame 11 is arranged above three corners, the hoisting steel frame 11 is arranged at four corners, and the hoisting steel frame 11 is matched with the embedded part 1.
The main body steel structure beam comprises a main body steel structure beam 6, a fixing screw rod 3 and a gasket 7, wherein the fixing screw rod 3 is arranged on the upper portion of the main body steel structure beam 6, the position of an embedded part 1 of the fair-faced concrete horizontal prefabricated component 5 is positioned, the fair-faced concrete horizontal prefabricated component is welded on the main body steel structure beam 6 after the positioning is completed, the fixing screw rod 3 of the fair-faced concrete horizontal prefabricated component is arranged on the main body steel beam 6 according to the positioning of the embedded part 1, the gaskets 7 of different specifications are arranged on the lower portion of the fixing screw rod 3, the thickness of each end gasket 7 is adjusted by a level gauge, and the condition that the fair-faced concrete horizontal prefabricated component 5 is installed on the same horizontal plane is guaranteed.
When the bare concrete horizontal prefabricated component is hoisted, the bare concrete horizontal prefabricated component 5 is hoisted by the hoisting ring 4, the hoisting steel frame 11 is adopted for hoisting the bare concrete horizontal prefabricated component 5 to form the lifting lug 12, the steel wire rope 10 is vertically adopted to be connected with the hoisting ring 4 and the lifting hook 13, and the parallel hoisting operation of the bare concrete horizontal prefabricated component 5 is achieved.
The bare concrete horizontal prefabricated part 5 is hoisted by utilizing the hoisting ring 4, in the hoisting ring 4, after the hollow area of the hoisting rod is aligned with the bare concrete horizontal prefabricated part fixing screw rod 3, the bare concrete horizontal prefabricated part 5 is put down to be supported on the gasket 7, after the gasket 7 is arranged again, the nut 8 matched with the bare concrete horizontal prefabricated part fixing screw rod 3 is screwed into the fixing screw rod 3, so that the main steel structure beam 6 of the bare concrete horizontal prefabricated part 5 is connected into a whole, then the bare concrete horizontal prefabricated part hoisting ring 4 is taken down, the gap between the embedded part 1 and the bare concrete horizontal prefabricated part fixing screw rod 3 is tightly plugged by adopting mortar 9, and then the horn mouth is plugged by adopting the mortar 9 to complete the whole installation process.
As shown in fig. 1 to 3, example 2: an installation method of an enclosed space of an assembly type bare concrete horizontal prefabricated part comprises the following steps: the first step is as follows: arranging embedded parts 1, welding the embedded parts 1 and tie bars 2 to form a whole, arranging threads on the inner sides of holes of the embedded parts 1, prefabricating the size and shape of a fair-faced concrete horizontal prefabricated part 5 according to the size and shape of a main steel structure beam 6, wherein the prefabricated fair-faced concrete horizontal prefabricated part 5 is rectangular or square, arranging more than three embedded parts 1 around the embedded parts 1 to facilitate parallel hoisting, arranging four embedded parts 1 around the embedded parts 1 to facilitate parallel hoisting, embedding the embedded parts 1 into the fair-faced concrete horizontal prefabricated part 5, accurately embedding according to the main steel structure beam 6, fixing firmly through the tie bars 2, arranging the embedded parts 1 at more than three corners, arranging the embedded parts 1 at four corners, arranging the tie bars 2 at the same number as the embedded parts 1 and distributing at the four corner ends of the fair-faced concrete horizontal prefabricated part 5, and pouring the bare concrete horizontal prefabricated part 5 after the completion.
The second step is that: the bare concrete horizontal member hoisting ring 4 is screwed into the screw hole on the inner side of the embedded part 1 through external threads and is used for hoisting the bare concrete horizontal prefabricated member 5, a hoisting steel frame 11 is used for hoisting to form a lifting lug 12, a steel wire rope 10 is vertically adopted and is connected with the hoisting ring 4 and a lifting hook 13, and the parallel hoisting operation of the bare concrete horizontal prefabricated member (5) is achieved.
The third step: the fourth step: the fifth step: hoisting the bare concrete horizontal prefabricated part 5 by using the hoisting ring 4, and putting down the bare concrete horizontal prefabricated part 5 after aligning the hollow area of the hoisting rod in the hoisting ring 4 with the bare concrete prefabricated part fixing screw rod 3 so as to support the bare concrete horizontal prefabricated part on the gasket 7.
And a sixth step: and taking down the hoisting ring 4 of the bare concrete horizontal prefabricated component, and plugging and compacting a gap between the embedded part 1 and the fixing screw rod 3 of the bare concrete horizontal prefabricated component by adopting mortar 9.
The seventh step: and after the gasket 7 is arranged again, the nut 8 matched with the fixing screw rod 3 of the bare concrete horizontal prefabricated part is screwed into the fixing screw rod 3, so that the main steel structure beam 6 of the bare concrete horizontal prefabricated part 5 is connected into a whole.
Eighth step: and after the seventh step is finished, the bell mouth is sealed by adopting mortar 9.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an assembled clear water concrete horizontal prefabricated component, its characterized in that, constitutes including prefabricated clear water concrete horizontal prefabricated component (5) and main part steel structure roof beam (6), clear water concrete horizontal prefabricated component (5) include built-in fitting (1) drawknot muscle (2) and hoisting ring (4), built-in fitting (1) and drawknot muscle (2) are fixed to form wholly, the downthehole side of built-in fitting (1) sets up the screw thread, and the external screw thread twists in the inboard screw of built-in fitting (1), hoisting ring (4) are the screw thread for the cavity inboard outside for the hoist and mount of clear water concrete horizontal prefabricated component (5) and fixed with main part steel structure roof beam (6) on the clamping screw, realize hoist and mount ring hoist and fixed purpose.
2. The assembled bare concrete horizontal prefabricated part according to claim 1, wherein the upper part of the hoisting ring (4) is an arc hoisting point, the lower part of the hoisting ring is a hoisting rod, the hoisting rod is hollow, the height of the hollow area is higher than the thickness of the bare concrete horizontal prefabricated part (5), the outer side of the hollow area is a thread, the thread is matched with the inner side thread of the embedded part (1), and the depth of the hoisting ring (4) screwed into the embedded part (1) does not exceed the bottom of the bare concrete horizontal prefabricated part (5).
3. The assembly type bare concrete horizontal prefabricated component according to claim 1, wherein the main steel structural beam (6), the fixing screw (3) and the gasket (7) are formed, the fixing screw (3) is arranged at the upper part of the main steel structural beam (6), and the installation purpose is achieved by positioning and fixing the embedded part (1) and the fixing screw (3) of the bare concrete horizontal prefabricated component (5).
4. The fabricated fair-faced concrete horizontal prefabricated part according to the claim 2, wherein the thickness of each end gasket (7) of the gasket (7) is adjusted by a level gauge to ensure that the fair-faced concrete horizontal prefabricated part (5) is on the same horizontal plane after being installed.
5. The assembly type bare concrete horizontal prefabricated part according to the claim 1, wherein the embedded part (1) is arranged at more than three angles, the tie bar (2) is welded with the corresponding embedded part (1) at the angle, the tie bar (2) is round steel, and the end is hooked by 180 degrees.
6. The fabricated fair-faced concrete horizontal precast element according to claim 1 or 4, wherein the nut (8) connected with the fixing screw (3) adopts a double nut.
7. The assembled bare concrete horizontal prefabricated part according to the claim 1 or 4, wherein the height of the embedded part (1) is lower than the thickness of the bare concrete horizontal prefabricated part (1), and the embedded part (1) is arranged at the four corners of the bare concrete horizontal prefabricated part (5) respectively and is in contact with the edge position of the bare concrete horizontal prefabricated part (5).
8. The assembled bare concrete horizontal precast element according to claim 1 or 4, wherein the bare concrete horizontal precast element (5) is provided with a bell mouth at the end part of the embedded part (1), and the angle is 45 degrees with the horizontal.
9. The method for installing the closed space of the fabricated fair-faced concrete horizontal prefabricated part according to any one of claims 1 to 8, wherein the steps of the method for installing the closed space are as follows:
the first step is as follows: arranging embedded parts (1), welding the embedded parts (1) and the tie bars (2) to form a whole, arranging threads on the inner side of a hole of the embedded parts (1), embedding the embedded parts (1) into the fair-faced concrete horizontal prefabricated part (5) according to the size of the fair-faced concrete horizontal prefabricated part (5), wherein the embedded parts are distributed at the four corner ends of the fair-faced concrete horizontal prefabricated part (5) and are accurate, fixed and firm, and pouring is finished after the completion of the embedding of the fair-faced concrete horizontal prefabricated part (5);
the second step is that: screwing the bare concrete horizontal member hoisting ring (4) into a screw hole on the inner side of the embedded part (1) for hoisting the bare concrete horizontal prefabricated member (5), wherein the hoisting adopts a steel frame (11) to arrange a lifting lug (12), and adopts a steel wire rope (10) up and down to be connected with the hoisting ring (4) and a lifting hook (13);
the third step: the upper part of the main steel structure beam (6) is provided with a fair-faced concrete fixing screw rod (3), the fair-faced concrete fixing screw rod is positioned according to the position of the embedded part (1) of the fair-faced concrete horizontal prefabricated part (5), the fair-faced concrete horizontal prefabricated part is welded on the main steel structure beam (6) after the positioning is finished, and the fair-faced concrete horizontal prefabricated part fixing screw rod (3) is arranged on the main steel beam (6) according to the positioning of the embedded part (1);
the fourth step: arranging gaskets (7) with different specifications at the lower part of the fixing screw rod (3) of the bare concrete prefabricated part, and adjusting the thickness of each end gasket (7) by using a level gauge to ensure that each end gasket (7) is at the same elevation;
the fifth step: hoisting the bare concrete horizontal prefabricated part (5) by using the hoisting ring (4), and putting down the bare concrete horizontal prefabricated part (5) after aligning the hollow area of the hoisting rod in the hoisting ring (4) with the bare concrete prefabricated part fixing screw (3) so as to support the bare concrete horizontal prefabricated part on the gasket (7);
and a sixth step: taking down the hoisting ring (4) of the fair-faced concrete horizontal prefabricated component, and plugging and compacting a gap between the embedded part (1) and the fixing screw rod (3) of the fair-faced concrete horizontal prefabricated component by adopting mortar (9);
the seventh step: after the gasket (7) is arranged again, a nut (8) matched with the fixing screw (3) of the bare concrete horizontal prefabricated component is screwed into the fixing screw (3), so that the main steel structure beam (6) of the bare concrete horizontal prefabricated component (5) is connected into a whole;
eighth step: and after the seventh step is finished, the bell mouth is blocked by adopting mortar (9).
10. The method for installing an enclosed space of assembled bare concrete horizontal prefabricated parts according to claim 9, wherein the total length of the fixing screw (3) is equal to the thickness of the bare concrete horizontal prefabricated part (5).
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115233882A (en) * | 2022-07-05 | 2022-10-25 | 重庆大学 | Close piece together and exempt from to support coincide floor based on additional rigidity piece of bottom drop-down spring |
CN115354758A (en) * | 2022-09-23 | 2022-11-18 | 南通砼星建筑科技有限公司 | Prefabricated part connecting piece and connecting mode thereof |
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CN110469039A (en) * | 2019-09-02 | 2019-11-19 | 中电建(洛阳)装配式建筑科技有限公司 | A kind of pre-buried lifting seat of concrete component with grouting function |
CN211891352U (en) * | 2019-12-12 | 2020-11-10 | 孟凡林 | Precast concrete stair section with multipurpose hole utensil |
JP6852935B1 (en) * | 2020-01-03 | 2021-03-31 | ▲広▼州大学 | Connection structure and mounting method of concrete slab and steel beam |
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CN204238395U (en) * | 2014-11-06 | 2015-04-01 | 安徽湖滨建设集团有限公司 | A kind of prefabricated pair of thin plate cassette ceiling structure |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN115233882A (en) * | 2022-07-05 | 2022-10-25 | 重庆大学 | Close piece together and exempt from to support coincide floor based on additional rigidity piece of bottom drop-down spring |
CN115354758A (en) * | 2022-09-23 | 2022-11-18 | 南通砼星建筑科技有限公司 | Prefabricated part connecting piece and connecting mode thereof |
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