CN115387655B - Accumulator roof structure and construction method - Google Patents
Accumulator roof structure and construction method Download PDFInfo
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- CN115387655B CN115387655B CN202210944765.5A CN202210944765A CN115387655B CN 115387655 B CN115387655 B CN 115387655B CN 202210944765 A CN202210944765 A CN 202210944765A CN 115387655 B CN115387655 B CN 115387655B
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- bottom plate
- prefabricated bottom
- layer
- post
- steel bars
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
-
- 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
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
-
- 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
- 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
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The application discloses a storage pool top plate structure and a construction method, wherein the storage pool top plate structure comprises at least two prefabricated bottom plates, one end of any prefabricated bottom plate, which is close to the other prefabricated bottom plate, is provided with grouting grooves, the grouting grooves of the two adjacent prefabricated bottom plates are spliced with each other to form a connecting area, a plurality of bending steel bars are arranged in any prefabricated bottom plate in a parallel splicing manner, each bending steel bar is arranged in a protruding grouting groove and is bent upwards along the vertical direction, a UHPC layer is poured in the connecting area, and a reinforcing module is arranged on the prefabricated bottom plate and is positioned on one side, close to the bending direction of the bending steel bars, of the prefabricated bottom plate.
Description
Technical Field
The application relates to the field of building engineering construction, in particular to a top plate structure of a storage pool and a construction method.
Background
According to the construction requirements of JGJ1-2014 about the integral joint at the side of the two-way laminated slab in the technical regulations of assembled concrete structure, the joint can be in the form of a post-cast strip, and the post-cast strip width is not suitable to be less than 200mm; the longitudinal stress steel bars at the bottoms of the two side plates of the post-cast strip can be welded, lapped, connected and bent and anchored in the post-cast strip.
In the related art, a bottom template and a support are required to be arranged at a plate bottom joint in the construction process of the two-way laminated plate side integral joint, and then concrete can be poured. The integral joint needs to be provided with a bottom template and a support, so that the construction is troublesome in the prefabricated concrete structure. And the prefabricated assembled roof of the storage pool can be subjected to the hogging moment caused by hydraulic pressure, and the performance of the integral joint under the hogging moment is not tested, so that the improvement exists.
Disclosure of Invention
In order to reduce the influence of hogging moment on a roof supporting structure, the application provides a storage pool roof structure and a construction method.
The application provides a top plate structure of a storage pool and a construction method thereof, which adopts the following technical scheme:
The utility model provides a saving pool roof structure, includes two at least prefabricated bottom plates, arbitrary prefabricated bottom plate is close to the one end of another prefabricated bottom plate and has all been seted up the grout groove, and the grout groove of two adjacent prefabricated bottom plates splices each other and forms the junction area, arbitrary equal parallel grafting is provided with a plurality of bending steel bars in the prefabricated bottom plate, arbitrary bending steel bar all is outstanding grout groove setting and upwards buckles along vertical direction, UHPC layer has been pour in the junction area, be provided with the reinforcement module on the prefabricated bottom plate, the reinforcement module is located the prefabricated bottom plate and is close to one side of bending steel bar direction of buckling.
Through adopting above-mentioned technical scheme, strengthening module and prefabricated bottom plate can bear the positive moment of flexure effect that gravity factors such as upper portion earthing aroused after accomplishing the assembly, and through the setting of bending bar, can be when the negative moment of flexure effect is aroused to accumulator hydraulic pressure, through the fixing of bending bar in the UHPC layer, the intensity of prefabricated bottom plate has been improved, thereby utilize bending bar's deformation to offset the negative moment, make this roof structure can both play better elimination effect to positive moment and negative moment, prevent that it from taking place bending deformation, the life of this roof structure has been prolonged.
Preferably, the reinforcement module comprises a post-cast layer, and steel bars in the post-cast layer are penetrated.
By adopting the technical scheme, the post-cast layer and the in-layer steel bars concretely realize the elimination mode of the action of the reinforcing module on the positive bending moment, and are beneficial to improving the structural strength of the post-cast layer.
Preferably, the inner reinforcement comprises a plurality of first transverse reinforcements and second transverse reinforcements, and the first transverse reinforcements and the second transverse reinforcements are arranged in a staggered manner.
Through adopting above-mentioned technical scheme, the in-situ reinforcement that crisscross setting can improve the back-cast layer support strength of each direction, on the one hand can improve its cancellation effect of correcting moment, on the other hand, the first horizontal reinforcement that crisscross setting and the horizontal reinforcement of second can improve the joint strength between in-situ reinforcement and the back-cast layer, are favorable to improving the bulk strength on back-cast layer.
Preferably, shear stool ribs are arranged between the post-pouring layer and the prefabricated bottom plate, a plurality of shear stool ribs are arranged, and any shear stool rib is vertically arranged and is inserted into the prefabricated bottom plate.
Through adopting above-mentioned technical scheme, the setting of shear bench muscle can prevent to take place relative slip between prefabricated bottom plate and the post-cast layer, has improved this roof structure's wholeness, simultaneously, because shear bench muscle is fixed in prefabricated bottom plate, after the post-cast layer is pour and is accomplished and solidification, can make post-cast layer and prefabricated bottom plate when receiving positive moment or hogging moment, can wholly atress to offset positive and negative moment under the integral action of in-layer reinforcing bar and bending steel bar, further reduced the influence of positive and negative moment to roof bearing structure.
Preferably, a reinforcing mesh is arranged on one side of the prefabricated bottom plate, which is close to the post-pouring layer.
By adopting the technical scheme, the reinforcing steel bar meshes are compared with reinforcing steel bars arranged in a traditional middle overlapping manner, so that the engineering quality can be further improved, the construction speed is accelerated, the crack resistance of the post-pouring layer is improved, and the integration of the top plate structure is further improved by matching with the shearing-resistant stool bars.
Preferably, one side of the prefabricated bottom plate far away from the post-pouring layer is inserted and provided with supporting bars, the length direction of the supporting bars is perpendicular to the length direction of the bending steel bars, and the supporting bars are provided with a plurality of supporting bars and are arranged at intervals along the length direction array of the bending steel bars.
By adopting the technical scheme, the supporting reinforcing steel bars can support the bending reinforcing steel bars, and meanwhile, the supporting reinforcing steel bars and the bending reinforcing steel bars can form a structure similar to a reinforcing steel bar net sheet in the prefabricated bottom plate, so that the cracking resistance of the prefabricated bottom plate is enhanced.
The application also provides a construction method of the storage pool top plate, which comprises the following steps:
s1, manufacturing a prefabricated bottom plate;
s2, mounting a bottom plate, and arranging side templates on two sides of the bottom plate;
S3, pouring UHPC into the connection area and curing until the UHPC layer reaches the design strength;
S4, placing a reinforcing mesh on the prefabricated bottom plate;
S5, fixing the steel bars in the post-pouring layer, pouring and maintaining the post-pouring layer until the post-pouring layer reaches the design strength.
Preferably, in the step S1, both the bending steel bar and the shear stool bar are pre-fixed at the pouring position of the prefabricated bottom plate.
Through adopting above-mentioned technical scheme, fix in advance in pouring position department can fix a position bending steel bar and shear bench muscle in advance, avoided bending steel bar and shear bench muscle loaded down with trivial details when pouring the back and inserting, can improve bending steel bar and shear bench muscle's bonding compactness simultaneously.
Preferably, in the step S3, a test block should be reserved in the UHPC layer during pouring; in the step S5, the post-cast layer is also reserved with test blocks during casting.
By adopting the technical scheme, the mode of reserving the test blocks can estimate the structural strength of the UHPC layer and the post-cast layer by estimating the structural strength of the two test blocks under the same maintenance condition, so that the situation that the surfaces of the UHPC layer and the post-cast layer are damaged due to strength detection when the UHPC layer and the post-cast layer are not fully hardened is prevented.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the bending steel bars bent in the connecting area are utilized, when negative bending moment of the top plate structure is caused by hydraulic pressure in the storage pool, the negative bending moment can be counteracted through the strength and deformation of the bending steel bars, meanwhile, the reinforcing module and the prefabricated bottom plate can resist positive bending moment caused by gravity factors, so that the top plate can have better elimination effect on the positive bending moment and the negative bending moment, and the service life of the top plate structure is prolonged;
2. By means of the arrangement of the shearing-resistant stool ribs and the reinforcing steel bar meshes, the integrity of the roof structure after pouring of the post-pouring layer can be improved, meanwhile, when the roof structure bears positive and negative bending moments, the integral stress of the post-pouring layer and the prefabricated bottom plate can be realized, the positive and negative bending moments are counteracted under the integral action of the reinforcing steel bars and the bending steel bars in the layer, and the influence of the positive and negative bending moments on the roof supporting structure is further reduced;
3. by reserving the test blocks during pouring of the UHPC layer and the post-pouring layer, the structural strength of the UHPC layer and the post-pouring layer can be estimated by estimating the structural strength of the two test blocks under the same maintenance condition.
Drawings
FIG. 1 is an isometric view of a reservoir roof structure embodying aspects of the present application;
FIG. 2 is an exploded view of the interior of a reservoir roof structure embodying the principles of the present application;
Fig. 3 is a schematic view of an internal reinforcement structure of a top plate structure of a reservoir according to an embodiment of the present application;
Fig. 4 is a schematic flow chart of a construction method for a top plate structure of a reservoir according to an embodiment of the present application.
Reference numerals: 1. prefabricating a bottom plate; 11. grouting grooves; 12. supporting the reinforcing steel bars; 2. a connection region; 21. UHPC layer; 3. bending steel bars; 4. a reinforcement module; 41. post-pouring layer; 42. a first transverse bar; 43. a second transverse bar; 44. reinforcing steel bar meshes; 45. and a shear stool rib.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a top plate structure of a storage pool.
Referring to fig. 1 and 2, a top plate structure of a storage pool includes at least two prefabricated bottom plates 1, in this embodiment, two prefabricated bottom plates 1 are provided, grouting grooves 11 are formed along a length direction of a contact edge on one side, which is close to each other, of the two prefabricated bottom plates 1, and the two grouting grooves 11 form a connection area 2 after the two prefabricated bottom plates 1 are spliced, and since structures of the two prefabricated bottom plates 1 are identical, description will be made by taking one of the prefabricated bottom plates 1 as an example.
Referring to fig. 1 and 2, a plurality of bending steel bars 3 are inserted into the prefabricated bottom plate 1, the length directions of all bending steel bars 3 are parallel to and perpendicular to the length direction of the grouting groove 11, one end of any bending steel bar 3 is located in the prefabricated bottom plate 1, the other end of any bending steel bar 3 is arranged to protrude out of the grouting groove 11 and is bent upwards along the vertical direction, a UHPC layer 21 is poured in the connecting area 2, one side, far away from the bending direction, of all bending steel bars 3 in the prefabricated bottom plate 1 is buried with a plurality of supporting steel bars 12, the length directions of any supporting steel bars 12 are perpendicular to the length directions of the bending steel bars 3 and are abutted to all bending steel bars 3, when a negative bending moment caused by reservoir hydraulic pressure is born, one end of the bending steel bar 3 is inserted into the prefabricated bottom plate 1, one end of the bending steel bar 3 is upwarp and is located in the UHPC layer 21, deformation of the negative bending moment structure can be prevented under the influence of the negative bending moment, and simultaneously, the supporting steel bars 12 and the bending moment 3 are staggered, the prefabricated bottom plate 1 can be prevented from being cracked, and the service life of the prefabricated bottom plate can be prolonged.
Referring to fig. 2 and 3, a reinforcing module 4 is arranged on the prefabricated bottom plate 1, the reinforcing module 4 comprises a post-cast layer 41, a plurality of first transverse steel bars 42 and second transverse steel bars 43 which are arranged in a staggered manner are arranged in the post-cast layer 41 in a penetrating manner, the length direction of any one first transverse steel bar 42 is perpendicular to the length direction of the second transverse steel bar 43, the supporting strength of each direction in the post-cast layer 41 is improved, and when the support is subjected to positive bending moment caused by gravity factors such as upper soil covering, the support can be counteracted, meanwhile, the overall strength of the post-cast layer 41 can be improved, and cracking of the post-cast layer 41 is prevented; still be provided with reinforcing bar net piece 44 and a plurality of shear bench muscle 45 between post-cast layer 41 and the prefabricated bottom plate 1, arbitrary shear bench muscle 45 cross-section all is the setting of reverse U font, and the open end of arbitrary shear bench muscle 45 all pegs graft in prefabricated bottom plate 1, the closed end of arbitrary shear bench muscle 45 all is located post-cast layer 41, reinforcing bar net piece 44 and shear bench muscle 45 are favorable to improving this roof structure's wholeness, prevent to take place relative slip between prefabricated bottom plate 1 and the post-cast layer 41, further this roof structure's wholeness has been improved, simultaneously can make two layer structures of post-cast layer 41 and prefabricated bottom plate 1 that are not coherent are when bearing positive moment and hogging moment, and offset positive moment and negative moment under the integral action of in-layer reinforcing bar and bending steel bar 3, thereby further reduced the influence of positive moment and negative moment to roof bearing structure.
As shown in fig. 4, the application further provides a construction method of the top plate of the storage pool, which comprises the following steps:
S1, manufacturing a prefabricated bottom plate 1 according to requirements, and pre-fixing the bending steel bars 3 and the shear stool ribs 45 at pouring positions when manufacturing the prefabricated bottom plate 1, so that the bending steel bars 3 and the shear stool ribs 45 can be more tightly combined with the prefabricated bottom plate 1 when being molded, and the trouble of inserting the bending steel bars 3 and the shear stool ribs 45 after grouting is avoided;
S2, mounting a bottom plate, and arranging side templates at two ends of the connecting area 2 in the length direction, so that the follow-up pouring of the UHPC layer 21 and the post-pouring layer 41 is facilitated;
s3, pouring the UHPC layer 21 into the connection area 2 for curing, reserving a UHPC test block, curing the UHPC layer 21 under the same condition until the UHPC layer 21 reaches the design strength, and accurately estimating the strength of the UHPC layer 21 by estimating the strength of the UHPC test block when the strength test is performed by reserving the UHPC test block, so that the UHPC layer 21 is prevented from being damaged due to incomplete hardening when the strength test is directly performed on the UHPC layer 21.
S4, placing a reinforcing mesh 44 on the prefabricated bottom plate 1;
S5, arranging and pre-fixing the first transverse steel bars 42 and the second transverse steel bars 43 in the post-cast layer 41, then pouring and curing the post-cast layer 41, reserving test blocks, curing the first transverse steel bars and the second transverse steel bars under the same condition until the post-cast layer 41 reaches the design strength, and accurately estimating the strength of the post-cast layer 41 by estimating the strength of the post-cast test blocks when the post-cast test blocks are reserved, so that the surface is prevented from being damaged due to incomplete hardening of the post-cast layer 41 when the strength of the post-cast layer 41 is directly tested.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. A reservoir roof structure, characterized by: the novel prefabricated bottom plate comprises at least two prefabricated bottom plates (1), grouting grooves (11) are formed in one end, close to the other prefabricated bottom plate (1), of each prefabricated bottom plate (1), the grouting grooves (11) of the two adjacent prefabricated bottom plates (1) are spliced with each other to form a connecting area (2), a plurality of bending steel bars (3) are arranged in each prefabricated bottom plate (1) in a parallel splicing mode, each bending steel bar (3) is arranged to protrude out of the grouting groove (11) and is bent upwards in the vertical direction, a UHPC layer (21) is poured in the connecting area (2), a reinforcing module (4) is arranged on the prefabricated bottom plate (1), and the reinforcing module (4) is located on one side, close to the bending direction of the bending steel bars (3), of the prefabricated bottom plate (1).
The reinforcing module (4) comprises a post-pouring layer (41), shear-resistant stool ribs (45) are arranged between the post-pouring layer (41) and the prefabricated bottom plate (1), and a reinforcing mesh (44) is arranged on one side, close to the post-pouring layer (41), of the prefabricated bottom plate (1).
2. A reservoir roof structure as defined in claim 1, wherein: and steel bars in the post-pouring layer (41) are penetrated in the post-pouring layer.
3. A reservoir roof structure as defined in claim 2, wherein: the inner layer steel bars comprise a plurality of first transverse steel bars (42) and second transverse steel bars (43), and the first transverse steel bars (42) and the second transverse steel bars (43) are arranged in a staggered mode.
4. A reservoir roof structure as defined in claim 3, wherein: the shear stool ribs (45) are arranged in a plurality, and any shear stool rib (45) is vertically arranged and is inserted in the prefabricated bottom plate (1).
5. A reservoir roof structure as defined in claim 1, wherein: one side of the prefabricated bottom plate (1) far away from the post-pouring layer (41) is inserted and provided with supporting bars (12), the length direction of the supporting bars (12) is perpendicular to the length direction of the bending bars (3), and the supporting bars (12) are provided with a plurality of supporting bars and are arranged at intervals along the length direction array of the bending bars (3).
6. A method of constructing a reservoir roof as defined in any one of claims 1-5, comprising the steps of:
S1, manufacturing a prefabricated bottom plate (1);
s2, mounting a bottom plate, and arranging side templates on two sides of the bottom plate;
s3, pouring UHPC into the connecting area (2) and curing until the UHPC layer (21) reaches the design strength;
s4, placing a reinforcing mesh (44) on the prefabricated bottom plate (1);
S5, fixing the steel bars in the post-cast layer (41), pouring and curing the post-cast layer (41) until the post-cast layer (41) reaches the design strength.
7. The method of constructing a reservoir roof of claim 6, wherein: in the S1, the bending steel bars (3) and the shear stool bars (45) are both pre-fixed at the pouring position of the prefabricated bottom plate (1).
8. The method of constructing a reservoir roof of claim 6, wherein: in the step S3, a test block is reserved in the UHPC layer (21) during pouring; in the step S5, the post-cast layer (41) is also reserved with test blocks during casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210944765.5A CN115387655B (en) | 2022-08-08 | 2022-08-08 | Accumulator roof structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210944765.5A CN115387655B (en) | 2022-08-08 | 2022-08-08 | Accumulator roof structure and construction method |
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| Publication Number | Publication Date |
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| CN115387655A CN115387655A (en) | 2022-11-25 |
| CN115387655B true CN115387655B (en) | 2024-05-24 |
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| CN115387655A (en) | 2022-11-25 |
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