CN117432147A - Annular multi-curved prismatic table type bare concrete cornice structure and construction method thereof - Google Patents
Annular multi-curved prismatic table type bare concrete cornice structure and construction method thereof Download PDFInfo
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- CN117432147A CN117432147A CN202310272613.XA CN202310272613A CN117432147A CN 117432147 A CN117432147 A CN 117432147A CN 202310272613 A CN202310272613 A CN 202310272613A CN 117432147 A CN117432147 A CN 117432147A
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- 239000004567 concrete Substances 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 56
- 239000010959 steel Substances 0.000 claims description 56
- 238000007667 floating Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 238000010009 beating Methods 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000011150 reinforced concrete Substances 0.000 abstract description 3
- 239000002023 wood Substances 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 238000009415 formwork Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000002519 antifouling agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The invention discloses an annular multi-curved prismatic table type bare concrete cornice structure and a construction method thereof. The reinforced concrete floor slabs are respectively arranged on the upper part and the lower part of the cavity surrounded by the cantilever beam and the boundary beam, the cavity is filled with a supporting core mould, and a vibrating hole is formed in the supporting core mould, so that blanking and vibrating are facilitated. The bottom of the outermost side beam of the annular multi-curved prismatic table type bare concrete cornice structure perfectly realizes the modeling requirement and the water interception and drainage requirement of building design by adopting the unique water interception measures of triple water interception of the hawk mouth, the water baffle and the notch. The invention solves the problem that the construction of the wide bare concrete cornice by adopting the traditional loose-fitting wood template is difficult to meet the requirements of quality and construction period.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an annular multi-curved-prismatic-table type bare concrete cornice structure and a construction method thereof.
Background
The condition of building annular modeling bare concrete cornices can be met on the outer sides of some building structures. The bare concrete cornice has the specificity of building requirements, and when the width of the bare concrete cornice is large (more than 1.5 m), the bare concrete cornice structure is constructed by adopting the traditional loose-fit wood templates, so that the requirements of quality and construction period are difficult to meet, and the construction cost is greatly improved.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, an annular multi-curved-prismatic-table type bare concrete cornice structure and a construction method thereof are provided at present, so that the problem that the quality and construction period requirements are difficult to meet when the wide bare concrete cornice is constructed by adopting a traditional loose-fit wood template is solved.
In order to achieve the above object, a ring-shaped multi-curved prismatic table type bare concrete cornice structure is provided, comprising:
the annular multi-curved prismatic table type bare concrete cornice structure has the beneficial effects that the annular multi-curved prismatic table type bare concrete cornice structure mainly comprises a cantilever beam with a variable cross section and three annular side beams. The cavity that cantilever beam and boundary beam enclose is added respectively from top to bottom establishes reinforced concrete floor, and upper plate thickness is 100mm generally, and lower plate thickness is 80mm generally, and the cavity intussuseption is filled with and is supported the mandrel, sets up the vibrating hole in supporting the mandrel, is convenient for blanking and vibrate. The bottom of the outermost side beam of the annular multi-curved prismatic table type bare concrete cornice structure perfectly realizes the modeling requirement and the water interception and drainage requirement of building design by adopting the unique water interception measures of triple water interception of the hawk mouth, the water baffle and the notch. The annular multi-curved-frustum-shaped bare concrete cornice structure is matched with a full steel mould for pouring, and the formed annular multi-curved-frustum-shaped bare concrete cornice structure is stable in structure and can meet the requirements of quality and construction period.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 is a schematic structural view of an annular multi-curved-prismatic-table bare concrete cornice structure according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an annular multi-curved-prismatic-mesa bare concrete cornice structure according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a support chip according to an embodiment of the invention.
Fig. 4 is a schematic structural view of a supporting frame according to an embodiment of the invention.
Fig. 5 is a schematic structural view of an outermost side rail according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 5, the present invention provides an annular multi-curved-prism-shaped bare concrete cornice structure, comprising: a plurality of cantilever beams 1, at least three side beams 2 and a hollow cornice 3.
Wherein, multichannel cantilever beam 1 pours in the outside of building structure. The multi-channel cantilever beams 1 are arranged at intervals along the circumferential direction of the building structure. The cantilever beam 1 has opposite first and second ends. The first end of the cantilever beam 1 is connected to the building structure. The cross section of the cantilever beam 1 tapers from a first end of the cantilever beam 1 to a second end of the cantilever beam 1. The bottom surface of the cantilever beam 1 is arranged obliquely upwards and outwards.
In this embodiment, the side rail has three rails. The side beam 2 is annular. The side beam 2 is provided with a circle along the circumferential direction of the building structure. The side beams 2 are connected to a plurality of cantilever beams 1.
Referring to fig. 3 and 5, a drip 20 is formed at the bottom of the side sill 2 of the outermost layer. The bottom of the side sill 2 of the outermost layer is formed with a hawk part 21 extending downward. The eagle mouth is arranged on one side of the drip groove far away from the building structure. The bottom of the side beam 2 of the outermost layer is buried with a water baffle. The water deflector 22 extends along an inner wall of the drip well remote from the building structure to below the side sill 2.
The hollow cornice 3 is connected between the plurality of cantilever beams 1 and the plurality of boundary beams 2. The hollow cornice 3, the cantilever beam 1 and the boundary beam 2 are integrally formed, and a supporting core mold 4 is filled in an inner cavity of the hollow cornice 3.
As a preferred embodiment, the number of side beams 2 is three. The three side beams 2 are respectively connected with the first end, the second end and the middle part of the cantilever beam 1.
The cantilever beam is a variable cross-section beam. The bottom of cantilever beam forms the bottom slope of slope setting. The bottom slope is arranged upwards to the outer side of the building structure. The top of the cantilever beam forms a top slope. The top slope is arranged downwards to the outer side of the building structure. The slope of the top slope was 2%.
With continued reference to fig. 3, the support mandrel 4 is provided with vertically disposed pouring through holes. The anti-floating steel bar is penetrated in the supporting core mould 4. The end parts of the anti-floating steel bars are connected with the steel bars of the side beams 2 and the steel bars of the cantilever beam 1.
In this embodiment, the support core 4 is a polystyrene plate.
The invention provides a construction method of an annular multi-curved-prismatic-table type bare concrete cornice structure, which comprises the following steps:
s1: the support frame 7 is arranged on the outer side of the building structure in a beating mode, and the support frame 7 is arranged along the circumferential direction of the building structure.
Referring to FIG. 4, the supporting frame is made of steel pipes with phi 48 multiplied by 3.0mm, the step distance is 1500mm, the distance between the middle road edge beam and the inner radial upright posts is within 500mm, the distance between the annular upright posts is within 600mm, and the distance between the outer radial direction of the middle road edge beam and the annular upright posts is within 700 mm. The uppermost layer is provided with a horizontal rod along the direction of the bevel of the cornice, and the horizontal rod is connected with the vertical rod by adopting double fasteners. The vertical direction in the middle and around the scaffold all sets up the stull in vertically and horizontally, and vertical stull radially separates to stride to arrange in parallel the circumference, and the plane position of every three-layer vertical horizontal pole of horizontal stull sets up one, and the stull all is connected with crossing pole setting with the corner fastener. In order to resist horizontal component force generated by the bottom die part of the pure steel die due to curved surface modeling and other factors, an inclined support is additionally arranged on the bottom die part.
S2: providing a plurality of fan-shaped bottom steel dies 5, splicing the plurality of bottom steel dies 5 to form an annular bottom die, and paving the annular bottom die on a support frame 7.
S3: and a lateral steel mould 6 is supported on the outer edge of the bottom mould, so that the lateral steel mould 6, the bottom mould and the building structure are enclosed to form a pouring space.
The bottom die and the side steel die are spliced to form a pure steel die bottom die, the elevation and the position of four corners of the cornice and the straight section of the bottom are rechecked by a hanging hammer according to the cornice side line drawn before, the upright rod position of the support frame is synchronously adjusted in the installation process to be matched with the main rib, the splice flatness is adjusted one by one, and limiting measures are taken with the bent frame to prevent the pure steel die from moving sideways. After one circle of splicing, the drip is installed, and then the upper panel is spliced.
After the bottom die of the cornice is installed, the side steel die is installed, and a water interception tank node is required to be arranged on the side steel die in the outdoor area. The water-intercepting tank adopts stainless steel with the diameter of 80mm multiplied by 5mm as a water baffle. A notch is reserved on the embedded 25mm multiplied by 35mm square. The water baffle and the battens are required to be fed and lofted in advance to form the same radian as that of the template. When the water baffle is placed, the bottom of the ground is required to be deviated outwards by 2-3 mm, so that the problem that the formwork collides with the water baffle to break the end concrete and the like is avoided when the formwork is disassembled.
S4: binding the reinforcing steel bars of the side beam 2 and the reinforcing steel bars of the cantilever beam 1 respectively, and installing a support core mold 4 between the reinforcing steel bars of the side beam 2 and the reinforcing steel bars of the cantilever beam 1.
The steel bar binding sequence of cornice is that first ligature slab bottom steel bar, later ligature cantilever beam steel bar, later ligature boundary beam steel bar, last ligature slab top steel bar, wherein must use clear water test piece cushion when ligature slab bottom steel bar, the tight control is at a distance between bottom muscle and the steel mould, avoids leaking appearance of muscle, shadow muscle scheduling problem.
When binding the cantilever beam and the side beam steel bars, the steel bars need to be installed strictly according to the placed line positions so as to prevent all the deflection of the steel bars which are subsequently overlapped after one section of steel bars are deflected, and the distance between the steel bars and the upper and lower plate bars is controlled.
Because the top surface of cornice is also required to be clear water effect, the elevation when so top surface reinforcing bar ligature needs to be acted as go-between to check, if the condition such as too high and low all need to calibrate appears, prevents to appear leaking muscle or height inequality phenomenon after pouring.
After the binding of the reinforcing steel bars is completed, the plastic film paved before the cornice is taken out, the partially broken film is manually pulled out of the reinforcing steel bars, and the template cleaning work can be performed after the film is taken out.
S5: and pouring concrete in the pouring space to solidify and form the annular multi-curved prismatic table type bare concrete cornice structure.
The floor edge is formed by splicing a plurality of sections of arcs, the cantilever beams are different in distance, the cornice cavity is irregular in shape, and the cavity sizes are measured one by one after the cantilever beams, the side beams and the bottom sheet steel bars are bound, so that the support core mould is manufactured. The supporting core mould is made by overlapping a plurality of polyphenyl boards and wrapping rubberized fabric on the whole circle outside. And the support core mould is provided with vibrating holes, so that blanking and vibrating are facilitated when concrete is poured, and the vibrating holes are formed according to the width of about 100 mm. The clear distance of the cantilever beam is within 1600mm, one square is arranged in the middle of each square, the distance between each square and the cantilever beam is more than 1600mm, and vibrating holes are formed in each square according to the distance of 800 mm. And (3) taking vibration of the small-interface cantilever beam into consideration, reserving vibration holes at the sides of the beam at corresponding positions, and plugging the vibration holes one by one along with concrete pouring.
And after the processing of the support core mold is finished, the support core mold is placed into the cavity one by one, 4C 14 steel bars which are inserted into the cavity are used as anti-floating steel bars, the anti-floating steel bars are bound with the peripheral beam steel bars to strengthen the core mold, the core mold is prevented from shifting, and anti-floating measures are needed in the installation process.
When pouring concrete, sandbags are used to ballast against floating when there is a significant tendency for the support mandrel 4 to float up.
The invention relates to an annular multi-curved prismatic table type bare concrete cornice structure and a construction method thereof, wherein a bottom steel mould and a side steel mould are all steel moulds which are formed by combining arc small steel plates with the thickness of 80mm multiplied by 6mm, 80mm multiplied by 8mm, channel steel and a 5mm thick curved steel plate are used as main stress systems. The special protective paint is sprayed on the surface of the steel mould, and the template system is utilized to design, so that the clean water concrete facing effect of the annular multi-curved terrace type clean water cornice is successfully realized with high quality.
According to the annular multi-curved-prismatic-table type bare concrete cornice structure and the construction method thereof, the adopted shaping all-steel template system is simple, effective and rapid in bolt connection, the template surfaces are in the form of connecting rabbets, the splicing effect and flatness of the template surfaces are ensured while the template surfaces are convenient to disassemble, the problem that the pouring quality of the clean water is influenced due to dislocation and the like is avoided, the manual operation is convenient, the process is simple, the reliable connection and reinforcement of adjacent templates are facilitated, the auxiliary processing is not needed, the construction quality is improved, the construction progress is greatly accelerated, and the construction period is shortened.
According to the annular multi-curved-pyramid type bare concrete cornice structure and the construction method thereof, the bare concrete cornice is modeled and analyzed by using revit, sketchup and other software in the deepened design stage, and the template system is subjected to aided design and partitioning; the modeling and arrangement form of the cornice steel mould keels is designed according to the model in a targeted manner, and corresponding geometric parameters can be directly determined for the special-shaped components.
The invention relates to an annular multi-curved prismatic table type bare concrete cornice structure which mainly comprises a cantilever beam with a variable cross section and three annular side beams. The cavity that cantilever beam and boundary beam enclose is added respectively from top to bottom establishes reinforced concrete floor, and upper plate thickness is 100mm generally, and lower plate thickness is 80mm generally, and the cavity intussuseption is filled with and is supported the mandrel, sets up the vibrating hole in supporting the mandrel, is convenient for blanking and vibrate.
The annular multi-curved-frustum-shaped bare concrete cornice structure is characterized in that the water-clearing slit is formed on the basis of the aspects of building effect, arc radius, special nodes, structural collision, construction feasibility and the like, and the slit elements are difficult to intuitively embody in the traditional plan view.
The annular multi-curved-frustum-shaped bare concrete cornice structure and the construction method thereof adopt the steel mould spliced seam to be provided with the connecting rabbet, the center position of the connecting rabbet is staggered from the splicing position of the steel mould by 10mm, so that the quality problems of dislocation, dislocation and the like possibly generated in the subsequent construction process are reduced, and the quality of the annular multi-curved-frustum-shaped bare concrete is greatly improved.
The bottom of the outermost side beam of the annular multi-curved prismatic table type bare concrete cornice structure perfectly realizes the modeling requirement and the water interception and drainage requirement of building design by adopting the unique water interception measures of triple water interception of the hawk mouth, the water baffle and the notch.
According to the annular multi-curved prismatic table type bare concrete cornice structure and the construction method thereof, the adopted supporting core mould is accurate in machining size and convenient and firm to install, and the floating resistance of the supporting core mould is enhanced by utilizing the adjusted hollow cornice upper layer plate ribs and concrete pouring control, so that great help is provided for accelerating engineering progress and improving concrete pouring quality.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. Annular multi-curved prismatic table type bare concrete cornice structure, which is characterized by comprising:
the cantilever beams are arranged at intervals along the circumferential direction of the building structure, the cantilever beams are provided with opposite first ends and second ends, the first ends of the cantilever beams are connected with the building structure, the cross section of each cantilever beam is gradually reduced from the first ends of the cantilever beams to the second ends of the cantilever beams, and the bottom surfaces of the cantilever beams are obliquely upwards and outwards arranged;
the side beams are connected to a plurality of cantilever beams, a circle of side beams are arranged along the circumferential direction of the building structure, a drip groove is formed in the bottom of the outermost side beam, a hawk mouth is formed by extending downwards the bottom of the side beam, the hawk mouth is arranged on one side of the drip groove far away from the building structure, a water baffle is buried in the bottom of the side beam, and the water baffle extends to the lower side of the side beam along one inner wall of the drip groove far away from the building structure;
the hollow cornice is connected between the cantilever beams and the edge beams, the hollow cornice and the cantilever beams are integrally formed, and a supporting core mold is filled in an inner cavity of the hollow cornice.
2. The annular multi-curved-frustum-shaped bare concrete cornice structure according to claim 1, wherein the number of edge beams is three, and the three edge beams are respectively connected to the first end, the second end and the middle part of the cantilever beam.
3. The annular multi-curved-frustum-shaped bare concrete cornice structure according to claim 1, wherein the core mold is provided with pouring through holes arranged vertically.
4. The annular multi-curved-frustum-shaped bare concrete cornice structure according to claim 1, wherein anti-floating steel bars are arranged in the supporting core mold in a penetrating mode, and the end portions of the anti-floating steel bars are connected with the steel bars of the side beams and the steel bars of the cantilever beam.
5. The annular multi-curved prismatic table type bare concrete cornice structure according to claim 4, wherein the support core mold is a polystyrene board.
6. A method of constructing an annular multi-curved-frustum-shaped bare concrete cornice structure as defined in any one of claims 1 to 5, comprising the steps of:
a supporting frame is arranged on the outer side of the building structure in a beating mode, and the supporting frame is arranged along the circumferential direction of the building structure;
providing a plurality of fan-shaped bottom steel molds, splicing the plurality of bottom steel molds to form an annular bottom mold, and paving the annular bottom mold on the support frame;
a side steel mould is supported on the outer edge of the bottom mould, so that a pouring space is formed by enclosing the side steel mould, the bottom mould and the building structure;
binding side beam steel bars and cantilever beam steel bars respectively, and installing a support core die between the side beam steel bars and the cantilever beam steel bars;
and pouring concrete in the pouring space to solidify and form the annular multi-curved prismatic table type bare concrete cornice structure.
7. The method of construction according to claim 6, wherein a sandbag ballast is used to resist floating when the support mandrel has a significant tendency to float up when concrete is poured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310272613.XA CN117432147A (en) | 2023-03-20 | 2023-03-20 | Annular multi-curved prismatic table type bare concrete cornice structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310272613.XA CN117432147A (en) | 2023-03-20 | 2023-03-20 | Annular multi-curved prismatic table type bare concrete cornice structure and construction method thereof |
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| CN117432147A true CN117432147A (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310272613.XA Pending CN117432147A (en) | 2023-03-20 | 2023-03-20 | Annular multi-curved prismatic table type bare concrete cornice structure and construction method thereof |
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| Country | Link |
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| CN (1) | CN117432147A (en) |
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- 2023-03-20 CN CN202310272613.XA patent/CN117432147A/en active Pending
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