CN111910927A - Construction method of concrete spreader supporting structure on hollow floor - Google Patents
Construction method of concrete spreader supporting structure on hollow floor Download PDFInfo
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- CN111910927A CN111910927A CN202010813533.7A CN202010813533A CN111910927A CN 111910927 A CN111910927 A CN 111910927A CN 202010813533 A CN202010813533 A CN 202010813533A CN 111910927 A CN111910927 A CN 111910927A
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- concrete
- construction method
- spreader
- hollow floor
- concrete spreader
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- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0427—Devices for both conveying and distributing with distribution hose on a static support, e.g. crane
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- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a construction method of a supporting structure of a concrete spreader on a hollow floor, and belongs to the technical field of cast-in-place concrete hollow floor construction. The construction method comprises the following steps of (1) determining a concrete pouring scheme and determining each set position of a concrete spreader; (2) accurately paying off the floor bottom template, and binding bottom steel bars; (3) placing the concrete cushion block A, the concrete cushion block B and the gypsum mold box on a floor bottom template; (4) binding surface layer reinforcing steel bars; (5) according to the stabilizer blade position of concrete spreader, set up four stabilizer blade support frames, the stabilizer blade support frame is placed on concrete cushion A, and the gypsum mould box is installed to the inboard of stabilizer blade support frame. The construction method can ensure that the concrete spreader can be normally installed, effectively protects the gypsum mould box, is beneficial to accelerating the construction progress, is beneficial to ensuring the construction quality and is beneficial to reducing the construction cost.
Description
Technical Field
The invention relates to a construction method of a concrete spreader supporting structure on a hollow floor, and belongs to the technical field of cast-in-place concrete hollow floor construction.
Background
In order to reduce the amount and cutting loss of the templates of the hollow floor system and the floor slab and improve the performances of the hollow floor system and the floor slab, such as fire resistance, sound insulation, heat insulation, vibration resistance, interference resistance and the like, the gypsum mold box is widely used for the construction of cast-in-place concrete hollow floor systems and floor slabs. The distributing machine is a novel construction machine matched with a concrete delivery pump for use, is matched equipment of the concrete delivery pump, is connected with the concrete delivery pump, enlarges the concrete pumping range, and has the function of conveying pumped concrete into a template of a member to be poured through a pipeline. The concrete spreader can improve the construction efficiency and reduce the labor intensity of frequently connecting and dismantling pipes in the concrete pouring process of the cast-in-place concrete plaster mold box hollow floor system.
Chinese patent publication No. CN205012658U discloses a fixing device for concrete spreader, including two wooden springboards for supporting four telescopic leg feet of concrete spreader, the position that four telescopic leg feet of lower part concrete spreader of wooden springboard correspond sets up the square timber, the position that every telescopic leg foot corresponds sets up four square timbers, four square timbers enclose into a square, leave the gap that can put into the roof reinforcing bar between square timber and the square timber, the square timber is placed at roof template upper surface, the position that the square timber corresponds under the roof template sets up the backup pad, set up the bull silk under the backup pad, set up the pole setting under the bull silk. The position that every telescopic leg foot of concrete spreader corresponds sets up four lumps of square timbers and can avoid the roof reinforcing bar, and the roof reinforcing bar does not receive concrete spreader's disturbance completely.
However, when the fixing device is used for the construction of hollow floors or hollow floors, the four upright posts cannot be placed into the mounting gaps between the gypsum mold boxes every time, and if the upright posts interfere with the gypsum mold boxes, the fixing device cannot be normally mounted; the top plate template is placed on the gypsum mould box, and the gypsum mould box can be damaged under the repeated loading action of the material distributor; if remove the gypsum diaphragm capsule of roof template downside or pole setting downside earlier, after peripheral concrete placement finishes, install the gypsum diaphragm capsule that is removed again and mend the concrete, secondary concrete placement and gypsum diaphragm capsule secondary installation can influence construction progress and construction quality, increase construction cost.
Disclosure of Invention
In order to solve the technical problem, the invention provides a construction method of a concrete spreader supporting structure on a hollow floor.
The invention is realized by the following technical scheme:
a construction method of a concrete spreader supporting structure on a hollow floor comprises the following steps:
(1) determining a concrete pouring scheme and determining each set position of a concrete spreader;
(2) accurately paying off the floor bottom template, and binding bottom steel bars;
(3) placing the concrete cushion block A, the concrete cushion block B and the gypsum mold box on a floor bottom template;
(4) binding surface layer reinforcing steel bars;
(5) according to the position of the support legs of the concrete spreader, four support leg support frames are erected and placed on the concrete cushion block A, and a gypsum mold box is installed on the inner side of each support leg support frame;
(6) mounting a concrete spreader to enable support legs of the concrete spreader to be respectively fixedly mounted on four support leg support frames;
(7) and finishing concrete pouring, moving the concrete spreader and the support leg support frame to the next construction area, supplementing concrete into the pores at the original installation positions of the support leg support frame, and leveling the concrete.
And (3) reserving an installation space matched with the sizes of the concrete cushion block A, the concrete cushion block B and the gypsum mould box in the process of binding the bottom layer reinforcing steel bars in the step (2).
If the concrete cushion block A is placed at the position of the multi-ribbed beam in the step (3), a plurality of steel bar clamping grooves are formed in the bottom of the concrete cushion block A side by side, the number of the steel bar clamping grooves is the same as the number of longitudinal bars at the bottom of the multi-ribbed beam, and the transverse size of each steel bar clamping groove is not smaller than that of the longitudinal bars.
And (4) marking the placing position of the support leg support frame in the process of tying the support leg support frame to the surface layer steel bar.
The supporting leg supporting frame comprises a horizontal steel pipe frame and square wood cushion blocks, four upright posts are arranged on the horizontal steel pipe frame, and the square wood cushion blocks are arranged on the horizontal steel pipe frame.
The horizontal steel pipe frame is located 100-200 mm above the forming surface of the hollow floor.
The upright post is connected with the horizontal steel pipe frame through the cross fastener.
The top of the concrete cushion A is provided with a limiting blind hole, and the diameter of the limiting blind hole is 1-3 mm larger than that of the stand column.
The length and width of the square wood cushion block are 200-300 mm smaller than those of the gypsum mold box.
The floor bottom formwork is characterized in that a plurality of supporting vertical rods are arranged at the bottom of the floor bottom formwork side by side below the set position of each concrete distributor, and the distance between every two adjacent supporting vertical rods is smaller than the distance between every two adjacent stand columns and smaller than 500 mm.
The invention has the beneficial effects that:
1. the stabilizer blade support frame is located the outside of a certain gypsum mold box, does not take place to interfere with the gypsum mold box, ensures that concrete spreader can normally install.
2. The floor bottom template supports the concrete spreader through the concrete cushion block A and the support leg support frame, so that repeated load or impact of the concrete spreader is effectively prevented from being transmitted to the gypsum mold box, and the gypsum mold box is effectively protected.
3. Need not take out the gypsum diaphragm capsule of concrete spreader below, can accomplish a concrete placement construction, reduced the secondary concrete volume of subsiding, help accelerating the construction progress, help guaranteeing construction quality, help reducing construction cost.
4. Concrete cushion A is spacing fixed through the vertical muscle in ligature reinforcing bar and the close rib roof beam, and the stand in the stabilizer blade support frame is spacing through spacing blind hole on the concrete cushion A, has good stability after making the installation of concrete spreader.
Drawings
FIG. 1 is a construction flow chart of the present invention;
FIG. 2 is a plan view of a concrete spreader arrangement of the present invention;
fig. 3 is a schematic view of a concrete spreader supporting structure of the present invention;
FIG. 4 is a schematic cross-sectional view taken along A-A of FIG. 3;
FIG. 5 is a schematic structural view of a concrete pad A of the present invention;
fig. 6 is a schematic structural view of a concrete pad a placed at a multi-ribbed beam in the present invention.
In the figure: 1-floor bottom formwork, 2-concrete cushion blocks A, 20-reinforcing steel bar clamping grooves, 3-stand columns, 4-gypsum mold boxes, 5-horizontal steel pipe frames, 6-fasteners, 7-square wood cushion blocks, 8-horizontal cross rods, 9-supporting upright rods, 10-concrete cushion blocks B, 11-supporting feet and 12-supporting legs.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 to 6, the construction method of the concrete spreader support structure on the hollow floor slab of the present invention includes the following steps:
(1) and determining a concrete pouring scheme and determining each set position of the concrete spreader. Because the distribution range of the concrete distributor is limited, when the area of the hollow floor is large, a plurality of concrete distributor mounting positions need to be selected on the floor bottom template 1.
(2) And precisely paying off the floor bottom template 1, and binding bottom steel bars. Through accurate unwrapping wire, ensure that the reinforcement is accurate, ensure concrete cushion A2, concrete cushion B10, gypsum mold box 4's installation accuracy to can just right with the stabilizer blade 11 on the concrete spreader after guaranteeing the installation of stabilizer blade support frame.
(3) And placing the concrete cushion A2, the concrete cushion B10 and the gypsum mold box 4 on the floor bottom template 1. In use, the four corners of the plaster box 4 are respectively placed on the floor base formwork 1 through the concrete pads B10. The external dimensions and concrete strength of the concrete pad B10 were the same as those of the concrete pad a 2.
(4) And binding surface layer reinforcing steel bars.
(5) According to the support leg 11 position of concrete spreader, set up four support leg support frames, the support leg support frame is placed on concrete cushion A2, and gypsum mold box 4 is installed to the inboard of support leg support frame. When in use, the supporting leg 12 of the concrete spreader is in a cross shape or an X shape, and the end parts of the supporting leg 12 are provided with supporting legs 11. Four stabilizer blade support frames respectively with four stabilizer blades 11 one-to-one, the stabilizer blade support frame is located the outside of a certain gypsum mold box 4, does not take place to interfere with gypsum mold box 4, and superstructure bottom form 1 passes through concrete cushion A2, and the concrete spreader is supported to the stabilizer blade support frame, effectively avoids the concrete spreader will load or strike the transmission repeatedly and give gypsum mold box 4, effectively protects gypsum mold box 4.
(6) The concrete spreader is installed, so that the support legs 11 are respectively installed and fixed on the four support leg support frames.
(7) And finishing concrete pouring, moving the concrete spreader and the support leg support frame to the next construction area, supplementing concrete into the pores at the original installation positions of the support leg support frame, and leveling the concrete. When using, need not take out gypsum mold box 4 of concrete spreader below, can accomplish a concrete placement construction, reduced the secondary concrete volume of subsiding, help accelerating the construction progress, help guaranteeing construction quality, help reducing construction cost.
In the process of binding the bottom layer steel bars in the step (2), an installation space matched with the sizes of the concrete cushion block A2, the concrete cushion block B10 and the gypsum mold box 4 needs to be reserved. When the concrete cushion block A2, the concrete cushion block B10 and the gypsum mold box 4 are used, the concrete cushion block A2, the concrete cushion block B10 and the gypsum mold box 4 can be just placed into a reserved installation space, and the concrete cushion block A2, the concrete cushion block B10 and the gypsum mold box 4 are limited in length and width directions through bound steel bars.
In the step (3), if the concrete cushion block A2 is placed at the multi-ribbed beam, a plurality of steel bar clamping grooves 20 are formed in the bottom of the concrete cushion block A2 side by side, the number of the steel bar clamping grooves 20 is the same as that of longitudinal bars at the bottom of the multi-ribbed beam, and the transverse size of each steel bar clamping groove 20 is not smaller than that of each longitudinal bar. When the steel bar protecting cover is used, the width of the steel bar clamping groove 20 is larger than the diameter of the longitudinal bar, and the depth meets the design requirement of the longitudinal bar protecting layer. And each longitudinal bar at the bottom of the multi-ribbed beam is correspondingly clamped into the steel bar clamping groove 20 on the concrete cushion A2, so that the concrete cushion A2 is prevented from shifting. The concrete cushion A2 helps to ensure the stability of the concrete spreader after installation by limiting and fixing the binding steel bars and the longitudinal bars in the multi-ribbed beam.
And (4) marking the placing position of the support leg support frame in the process of tying the support leg support frame to the surface layer steel bar. The placing position of the upright post 3 is prevented from being covered by the steel bar.
The supporting leg supporting frame comprises a horizontal steel pipe frame 5 and a square wood cushion block 7, four upright posts 3 are arranged on the horizontal steel pipe frame 5, and the square wood cushion block 7 is fixedly installed on the horizontal steel pipe frame 5. The erection process of the supporting leg supporting frame is as follows: four steel pipes with the thickness of 50mm are used as upright posts 3 to be respectively inserted into the limiting blind holes of the concrete cushion A2, and then the horizontal pipes are connected with the upright posts 3 through cross fasteners 6; the horizontal pipe is positioned at the position of 100-200 mm above the concrete forming top surface of the hollow floor; and finally fixing the 200X 200mm square wood cushion blocks 7 on the horizontal steel pipe frame 5.
The horizontal steel pipe frame 5 is located 100-200 mm above the forming surface of the hollow floor. And the concrete pouring construction is convenient.
The upright post 3 is connected with a horizontal steel pipe frame 5 through a cross fastener 6.
The top of concrete pad A2 is equipped with spacing blind hole (not drawn in the picture), and the diameter of spacing blind hole is 1 ~ 3mm bigger than the diameter of stand 3. So as to limit the radial direction of the upright post 3 through the limit blind holes.
The length and the width of the square wood cushion blocks 7 are 200-300 mm smaller than those of the gypsum mold boxes 4. Whether the upright post 3 is aligned with the limiting blind hole on the concrete cushion block A2 is convenient to observe.
The bottom of the floor bottom formwork 1 is provided with a plurality of supporting upright rods 9 below the set position of each concrete distributor side by side, and the distance between every two adjacent supporting upright rods 9 is smaller than the distance between every two adjacent upright posts 3 and is smaller than 500 mm. So as to ensure the support reliability of the floor bottom template 1, the concrete spreader and the like. The horizontal cross bar 8 connects a plurality of supporting upright bars 9 together through fasteners.
In summary, compared with the prior art, the construction method of the concrete spreader supporting structure on the hollow floor provided by the invention has the following technical effects:
1. the stabilizer blade support frame is located the outside of certain gypsum mold box 4, does not take place to interfere with gypsum mold box 4, ensures that concrete spreader can normally install.
2. Floor bottom form 1 supports concrete spreader through concrete cushion A2, stabilizer blade support frame, effectively avoids concrete spreader to give gypsum mold box 4 with load or impact transmission repeatedly, effectively protects gypsum mold box 4.
3. Need not take out the gypsum mold box 4 of concrete spreader below, can accomplish a concrete placement construction, reduced the secondary concrete volume of subsiding, help accelerating the construction progress, help guaranteeing construction quality, help reducing construction cost.
4. Concrete cushion A2 is spacing fixed through the vertical muscle of ligature reinforcing bar and among the close rib beam, and stand 3 in the stabilizer blade support frame is spacing through spacing blind hole on the concrete cushion A2, has good stability after making the installation of concrete spreader.
Claims (10)
1. A construction method of a concrete spreader supporting structure on a hollow floor is characterized in that: the construction method comprises the following steps:
(1) determining a concrete pouring scheme and determining each set position of a concrete spreader;
(2) accurately paying off the floor bottom template (1) and binding bottom layer steel bars;
(3) placing the concrete cushion block A (2), the concrete cushion block B (10) and the gypsum mold box (4) on the floor bottom template (1);
(4) binding surface layer reinforcing steel bars;
(5) according to the position of the support leg (11) of the concrete spreader, four support leg support frames are erected and placed on the concrete cushion block A (2), and a gypsum mold box (4) is installed on the inner side of each support leg support frame;
(6) mounting a concrete spreader to ensure that the support legs (11) are respectively fixedly mounted on the four support leg support frames;
(7) and finishing concrete pouring, moving the concrete spreader and the support leg support frame to the next construction area, supplementing concrete into the pores at the original installation positions of the support leg support frame, and leveling the concrete.
2. The construction method of a concrete spreader support structure on a hollow floor according to claim 1, wherein: in the step (2), in the process of binding the bottom layer reinforcing steel bars, installation spaces matched with the sizes of the concrete cushion block A (2), the concrete cushion block B (10) and the gypsum mold box (4) need to be reserved.
3. The construction method of a concrete spreader support structure on a hollow floor according to claim 1, wherein: if the concrete cushion A (2) is placed at the position of the multi-ribbed beam in the step (3), a plurality of steel bar clamping grooves (20) are formed in the bottom of the concrete cushion A (2) side by side, the number of the steel bar clamping grooves (20) is the same as the number of longitudinal bars at the bottom of the multi-ribbed beam, and the transverse size of each steel bar clamping groove (20) is not smaller than that of the longitudinal bars.
4. The construction method of a concrete spreader support structure on a hollow floor according to claim 1, wherein: and (4) marking the placing position of the support leg support frame in the process of tying the support leg support frame to the surface layer steel bar.
5. The construction method of a concrete spreader support structure on a hollow floor according to claim 1, wherein: the supporting leg supporting frame comprises a horizontal steel pipe frame (5) and square wood cushion blocks (7), four upright posts (3) are arranged on the horizontal steel pipe frame (5), and the square wood cushion blocks (7) are arranged on the horizontal steel pipe frame (5).
6. The construction method of a concrete spreader support structure on a hollow floor according to claim 5, wherein: the horizontal steel pipe frame (5) is located 100-200 mm above the forming surface of the hollow floor.
7. The construction method of a concrete spreader support structure on a hollow floor according to claim 5, wherein: the upright post (3) is connected with the horizontal steel pipe frame (5) through a cross fastener (6).
8. The construction method of a concrete spreader support structure on a hollow floor according to claim 5, wherein: the top of concrete cushion A (2) is equipped with spacing blind hole, and the diameter of spacing blind hole is 1 ~ 3mm bigger than the diameter of stand (3).
9. The construction method of a concrete spreader support structure on a hollow floor according to claim 5, wherein: the length and the width of the square wood cushion block (7) are 200-300 mm smaller than those of the gypsum mold box (4).
10. The construction method of a concrete spreader support structure on a hollow floor according to claim 5, wherein: the floor bottom formwork (1) is provided with a plurality of supporting upright rods (9) below the set position of each concrete distributor side by side, and the distance between two adjacent supporting upright rods (9) is smaller than the distance between two adjacent upright columns (3) and is smaller than 500 mm.
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| CN202010813533.7A CN111910927B (en) | 2020-08-13 | 2020-08-13 | Construction method of concrete spreader supporting structure on hollow floor |
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| CN202010813533.7A CN111910927B (en) | 2020-08-13 | 2020-08-13 | Construction method of concrete spreader supporting structure on hollow floor |
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| CN111910927A true CN111910927A (en) | 2020-11-10 |
| CN111910927B CN111910927B (en) | 2022-03-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390777A (en) * | 1989-09-01 | 1991-04-16 | Taisei Corp | Concrete placement method and device |
| CN101725201A (en) * | 2008-10-21 | 2010-06-09 | 韩忠民 | Method for constructing reinforced concrete cast-in-situ hollow floor plate cabinet inner module and construction cushion block |
| CN205012658U (en) * | 2015-09-07 | 2016-02-03 | 中铁城建集团第一工程有限公司 | Fixing device for concrete spreader |
| CN206468015U (en) * | 2017-02-17 | 2017-09-05 | 江苏省华建建设股份有限公司 | A kind of concrete spreader foot support instrument |
| CN111379366A (en) * | 2020-03-19 | 2020-07-07 | 中国建筑一局(集团)有限公司 | Hollow floor construction method adopting gypsum mold box and hollow floor structure |
-
2020
- 2020-08-13 CN CN202010813533.7A patent/CN111910927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0390777A (en) * | 1989-09-01 | 1991-04-16 | Taisei Corp | Concrete placement method and device |
| CN101725201A (en) * | 2008-10-21 | 2010-06-09 | 韩忠民 | Method for constructing reinforced concrete cast-in-situ hollow floor plate cabinet inner module and construction cushion block |
| CN205012658U (en) * | 2015-09-07 | 2016-02-03 | 中铁城建集团第一工程有限公司 | Fixing device for concrete spreader |
| CN206468015U (en) * | 2017-02-17 | 2017-09-05 | 江苏省华建建设股份有限公司 | A kind of concrete spreader foot support instrument |
| CN111379366A (en) * | 2020-03-19 | 2020-07-07 | 中国建筑一局(集团)有限公司 | Hollow floor construction method adopting gypsum mold box and hollow floor structure |
Non-Patent Citations (1)
| Title |
|---|
| 怡诗梦617: "《布料机支撑脚下模板加固处理方案》", 18 April 2014 * |
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