CN113323154A - Construction method of single-layer latticed shell structure awning with cantilever structure - Google Patents
Construction method of single-layer latticed shell structure awning with cantilever structure Download PDFInfo
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- CN113323154A CN113323154A CN202110646979.XA CN202110646979A CN113323154A CN 113323154 A CN113323154 A CN 113323154A CN 202110646979 A CN202110646979 A CN 202110646979A CN 113323154 A CN113323154 A CN 113323154A
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- shell structure
- truss
- layer
- annular
- latticed shell
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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
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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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
- E04G21/14—Conveying or assembling building elements
Abstract
The invention discloses a construction method of a single-layer latticed shell structure awning with an overhanging structure, which comprises the steps of firstly constructing a plurality of layers of truss rings in a layering manner to form a stable latticed shell structure, then integrally unloading, and then installing an overhanging truss, so that the characteristics of the original structure are followed, and meanwhile, a large amount of input of temporary support can be reduced. In addition, according to the unloading mode that whole hoop is the uninstallation unit, according to the fan-shaped uninstallation mode that is the unit of tradition, the atress conversion is more reasonable, and deformation control is more scientific, is fully considering structural feature, and the atress conversion process is simpler, has higher security. On the other hand, the temporary support can be repeatedly used for many times, the utilization rate of the temporary support is improved, the construction measure expense is reduced, and the construction cost is saved. The invention solves the problems that a large number of temporary supports need to be erected in the traditional single-layer overhanging latticed shell structure, and the deformation probability of the latticed shell structure is increased due to the fact that the repeated utilization rate of the temporary supports is improved by adopting local unloading during construction and installation.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a single-layer latticed shell structure awning with an overhanging structure.
Background
The common spatial reticulated shell structure has the characteristics of light weight and large span, and the single-layer reticulated shell structure embodies the characteristics to the utmost extent, is lighter and thinner, has larger hollowness, and certainly puts higher requirements on construction. The construction and unloading links of the latticed shell structure are the most important links.
Traditional single-layer overhanging latticed shell construction needs to set up a large amount of lattice type temporary supports, and the support quantity is many, and the repeated difficulty of using is big. On the other hand, a construction side is more inclined to adopt local unloading for pursuing higher turnover rate of the support frame body, less support frame consumption and less crane walking path. In terms of quality, the probability of causing structural deformation is greatly increased, and more safety uncertainty is brought in terms of safety.
Disclosure of Invention
In order to overcome the defects in the prior art, the construction method of the single-layer latticed shell structure awning with the cantilever structure is provided so as to solve the problems that a large number of temporary supports need to be erected in the traditional single-layer cantilever latticed shell structure, and the repeated utilization rate of the temporary supports is improved by adopting local unloading during construction and installation, so that the deformation probability of the latticed shell structure is increased.
In order to achieve the purpose, the construction method of the single-layer latticed shell structure awning with the overhanging structure is provided, the awning cover comprises an annular latticed shell structure, the annular latticed shell structure is provided with an upper ring opening and a lower ring opening, the upper ring opening is used for being installed on a roof structure, an overhanging truss is connected to the inner side of the upper ring opening, and the construction method of the single-layer latticed shell structure awning with the overhanging structure comprises the following steps:
dividing the annular latticed shell structure into a plurality of layers of truss rings along the height direction of the annular latticed shell structure;
installing each layer of truss rings from bottom to top layer by layer to form the annular latticed shell structure, building a circle of first temporary support for supporting each truss ring before installing each layer of truss rings, dismantling a circle of first temporary support corresponding to the truss ring on the n-2 th layer from the first temporary support of the truss ring on the nth layer for circulating the first temporary support of the truss ring on the nth layer, wherein n is a positive integer greater than or equal to 3;
after the annular latticed shell structure is built, unloading all the first temporary supports;
and after the first temporary support is completely unloaded, installing the cantilever truss on the upper ring opening of the annular latticed shell structure.
Further, the outer diameter of the annular latticed shell structure is gradually reduced from the lower ring opening to the upper ring opening.
Further, the outer diameter of the truss ring is gradually reduced from the lower port of the truss ring to the upper port of the truss ring.
Further, the step of installing the cantilever truss on the upper ring opening of the annular latticed shell structure comprises:
erecting a second temporary support on the inner side of the upper ring opening;
installing the overhanging truss on the inner side of the upper annular opening, so that the second temporary support is supported on the overhanging truss;
and unloading the second temporary support.
Furthermore, the number of the cantilever truss is a plurality of, and a plurality of the cantilever truss is used as the axis of the annular latticed shell structure and is arranged in a centrosymmetric manner.
The construction method of the single-layer latticed shell structure awning with the cantilever structure has the advantages that the construction method firstly carries out layered construction on the plurality of layers of truss rings before forming a stable latticed shell structure, then integrally unloads the latticed shell structure, and then installs the cantilever truss, so that the construction method follows the characteristics of the original structure, and simultaneously can reduce a large amount of input of temporary support. In addition, the construction method of the single-layer latticed shell structure awning with the cantilever structure, provided by the invention, adopts an unloading mode of taking the whole ring direction as an unloading unit, and compared with the traditional unloading mode of taking the sector shape as the unit, the stress conversion is more reasonable, the deformation control is more scientific, the structural characteristics are fully considered, the stress conversion process is simpler, and the safety is higher. On the other hand, the construction method of the single-layer latticed shell structure awning with the cantilever structure provided by the invention can repeatedly use the temporary supports, improves the utilization rate of the temporary supports, reduces the construction measure cost and saves the construction cost.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a single-layer reticulated shell structure awning with a cantilever structure according to an embodiment of the present invention.
Fig. 2 is a sectional view of a single-layer reticulated shell structural awning with a cantilever structure according to an embodiment of the present invention.
Fig. 3 to 8 are schematic diagrams illustrating steps of a construction method of a single-layer reticulated shell structure awning with an overhanging structure according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 2, the canopy comprises an annular lattice shell structure 1 and cantilever trusses 2. The annular latticed shell structure is a single-layer latticed shell structure. In particular, the annular reticulated shell structure 1 has opposed upper and lower annular mouths. The lower ring mouth of the annular reticulated shell structure 1 is used for being mounted on the roof structure 5. The inner side of the upper ring opening of the annular latticed shell structure 1 is connected with an overhanging truss 2.
In this embodiment, the outer diameter of the annular reticulated shell structure 1 gradually decreases from the lower annular opening to the upper annular opening.
In a preferred embodiment, the outer diameter of the truss ring 11 is gradually reduced from the lower port of the truss ring 11 to the upper port of the truss ring 11.
Referring to fig. 1 to 8, the invention provides a construction method of a single-layer latticed shell structure awning with an overhanging structure, which comprises the following steps:
s1: the annular reticulated shell structure 1 is divided into a plurality of layers of truss rings 11 along the height direction of the annular reticulated shell structure 1.
S2: install each layer of truss circle 11 in order to form annular latticed shell structure 1 from the successive layer from bottom to top, before installing each layer of truss circle 11, set up earlier that the first interim of a circle supports 3 in order to be used for supporting truss circle 11, from the first interim support 3 of setting up truss circle 11 on nth layer, demolish the corresponding round of truss circle 11 on n-2 layer first interim support 3 is used for the first interim support 3 of setting up truss circle 11 on nth layer with the turnover, and n is more than or equal to 3 positive integer.
In this embodiment, the annular reticulated shell structure of the single-extraction reticulated shell is divided into four layers from bottom to top.
The annular latticed shell structure is constructed in a layered mode, the first lattice type temporary supports are arranged in layered positions, and the single-layer latticed shell is divided into five construction sections by comprehensively considering factors such as lifting equipment, lifting weight and lifting times. The first four construction sections are respectively constructed by four layers (channels) of annular truss rings of an annular latticed shell structure, and the fifth channel is constructed by a crescent overhanging truss.
After the installation of the column foot of the roof structure 5 is completed, a first temporary support of the first layer (course) is set up and a truss ring of the first layer (course) is installed.
After the installation of the truss ring of the first layer (channel) is finished, a first temporary support of the second layer (channel) is set up and the truss ring of the second layer (channel) is installed.
And (4) dismantling the first temporary support after finishing the installation of the truss ring of the second layer (channel) for erecting a third first temporary support.
And after the third temporary support is built, installing a third truss ring. And the using amount of the first temporary support of the first track is larger than that of the third temporary support, so that redundant first temporary supports are transported to an interior field for standby.
And (4) dismantling the first temporary support of the second track, transporting to a site, erecting the first temporary support of the fourth track and starting to install the truss ring of the fourth track.
S3: after the erection of the annular lattice shell structure 1 is completed, all the first temporary supports 3 are unloaded.
And after the fourth truss ring is installed to form the annular latticed shell structure, all the first temporary supports are completely unloaded.
S4: after the first temporary supports 3 are completely unloaded, the cantilever truss 2 is installed on the inner side of the upper ring opening of the annular latticed shell structure 1.
Specifically, step S4 includes:
s41: a second temporary support 4 is erected on the inner side of the upper ring opening;
s42: installing an overhanging truss 2 on the inner side of the upper ring opening, so that a second temporary support 4 is supported on the overhanging truss 2;
s43: the second temporary support 4 is unloaded.
The construction method of the single-layer latticed shell structure awning with the cantilever structure, provided by the invention, comprises the steps of firstly carrying out layered construction on a plurality of layers of truss rings to form a stable latticed shell structure, then integrally unloading, and then installing the cantilever truss, so that the characteristics of the original structure are followed, and meanwhile, a large amount of input of temporary support can be reduced. In addition, the construction method of the single-layer latticed shell structure awning with the cantilever structure, provided by the invention, adopts an unloading mode of taking the whole ring direction as an unloading unit, and compared with the traditional unloading mode of taking the sector shape as the unit, the stress conversion is more reasonable, the deformation control is more scientific, the structural characteristics are fully considered, the stress conversion process is simpler, and the safety is higher. On the other hand, the construction method of the single-layer latticed shell structure awning with the cantilever structure provided by the invention can repeatedly use the temporary supports, improves the utilization rate of the temporary supports, reduces the construction measure cost and saves the construction cost.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (5)
1. The utility model provides a construction method of structure's individual layer latticed shell structure awning is encorbelmented in area, its characterized in that, the canopy cover includes annular latticed shell structure, annular latticed shell structure has relative last collarband and is used for installing in the lower collarband of roofing structure, the inboard of going up the collarband is connected with the truss of encorbelmenting, and the construction method of the structure's individual layer latticed shell structure awning is encorbelmented in area includes following step:
dividing the annular latticed shell structure into a plurality of layers of truss rings along the height direction of the annular latticed shell structure;
installing each layer of truss rings from bottom to top layer by layer to form the annular latticed shell structure, building a circle of first temporary support for supporting each truss ring before installing each layer of truss rings, dismantling a circle of first temporary support corresponding to the truss ring on the n-2 th layer from the first temporary support of the truss ring on the nth layer for circulating the first temporary support of the truss ring on the nth layer, wherein n is a positive integer greater than or equal to 3;
after the annular latticed shell structure is built, unloading all the first temporary supports;
and after the first temporary support is completely unloaded, installing the cantilever truss on the upper ring opening of the annular latticed shell structure.
2. The method for constructing a single-layer reticulated shell structure awning with an overhanging structure, as claimed in claim 1, wherein the outer diameter of the annular reticulated shell structure is gradually reduced from the lower annular opening to the upper annular opening.
3. The method of constructing a single-layer lattice-shell structural awning with an overhanging structure as claimed in claim 2, wherein the outer diameter of said lattice ring is gradually reduced from the lower port of said lattice ring to the upper port of said lattice ring.
4. The method for constructing a single-layer latticed shell structure awning with an overhanging structure as claimed in claim 1, wherein said step of installing said overhanging truss on the upper collar of said annular latticed shell structure comprises:
erecting a second temporary support on the inner side of the upper ring opening;
installing the overhanging truss on the inner side of the upper annular opening, so that the second temporary support is supported on the overhanging truss;
and unloading the second temporary support.
5. The method for constructing a single-layer reticulated shell structural awning with an overhanging structure as claimed in claim 4, wherein the number of the overhanging trusses is plural, and the plurality of overhanging trusses are arranged in central symmetry with the axial center of the annular reticulated shell structure as a symmetry center.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110646979.XA CN113323154A (en) | 2021-06-10 | 2021-06-10 | Construction method of single-layer latticed shell structure awning with cantilever structure |
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| CN202110646979.XA CN113323154A (en) | 2021-06-10 | 2021-06-10 | Construction method of single-layer latticed shell structure awning with cantilever structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199051A (en) * | 2022-07-22 | 2022-10-18 | 中建八局新型建造工程有限公司 | Construction method of football court large-span awning |
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| CN102493360A (en) * | 2011-12-29 | 2012-06-13 | 浙江大东吴集团建设有限公司 | Reinforced concrete arch bridge construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115199051A (en) * | 2022-07-22 | 2022-10-18 | 中建八局新型建造工程有限公司 | Construction method of football court large-span awning |
| CN115199051B (en) * | 2022-07-22 | 2024-04-16 | 中建八局新型建造工程有限公司 | Construction method of football field large-span awning |
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Application publication date: 20210831 |