CN214696077U - High-altitude large-cantilever concrete beam plate structure - Google Patents
High-altitude large-cantilever concrete beam plate structure Download PDFInfo
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- CN214696077U CN214696077U CN202023177424.5U CN202023177424U CN214696077U CN 214696077 U CN214696077 U CN 214696077U CN 202023177424 U CN202023177424 U CN 202023177424U CN 214696077 U CN214696077 U CN 214696077U
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Abstract
The utility model belongs to the building field. The utility model provides a high altitude concrete beam plate structure of encorbelmenting greatly, including cast in situ concrete structural beam and prefabricated superimposed sheet greatly, cast in situ concrete structure beam inside of encorbelmenting greatly is furnished with the atress owner muscle, stirrup and constructional reinforcement, cast in situ concrete structure beam height highly subtracts original design cast in situ structural slab thickness for the effective cross-section height of the structural beam of encorbelmenting greatly, cast in situ concrete structure beam embedded connection reinforcing bar that encorbelments greatly, prefabricated superimposed sheet's anchor reinforcing bar is fixed with cast in situ concrete structure beam embedded connection reinforcing bar connection, prefabricated superimposed sheet is above for cast-in-place superimposed sheet, prefabricated superimposed sheet thickness equals design cast in situ structural slab thickness with cast in situ superimposed sheet thickness sum, form the high altitude concrete beam plate structure of encorbelmenting greatly. The utility model discloses practiced thrift construction cost expenses such as formwork erection and demolition and dropped into, had that high altitude construction is dangerous little, simple process, convenient operation, construction speed are fast, quality standard is high, construction mechanization degree advantage such as high.
Description
Technical Field
The utility model belongs to the building construction field, in particular to high altitude concrete beam slab of encorbelmenting greatly.
Background
With the continuous development of economy, the requirements of people on individuation are continuously improved. In the field of buildings, personalized outstanding building structures and application of various high-altitude large cantilever structures continuously appear, and the uniqueness of the appearance characteristics of the buildings is revealed. The method is characterized in that an outward-expanding overhanging space is arranged on a high-rise building, which is the most common construction mode at present, and the requirements of individual buildings are met by setting the shape of an individual overhanging. The existing common large cantilever concrete beam slab structure mostly adopts a cast-in-place concrete process, for example, Chinese patent 200910115141.7 discloses a construction method of a high-altitude cantilever structure of a high-rise building, a design scheme is given firstly, then a bearing structure and a bearing structure are cast in place successively according to the design scheme, the structure of a support frame structure is complex, a large cantilever operation platform needs to be built on a high-altitude position in a large area, and a plurality of difficulties and inconveniences are brought to construction; the construction period is prolonged, the material investment of the template supporting system is increased, and the construction cost is greatly improved; meanwhile, the safety risk of high-altitude construction is increased, and particularly, safety accidents of high-altitude falling easily occur in the process of erecting and dismantling a high-altitude operation platform by construction operators, so that adverse effects and losses are caused to the society and families.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned a great deal of not enough of traditional cast in situ concrete technique technology of the concrete beam plate structure of encorbelmenting greatly at present high altitude position, provide a concrete beam plate structure of encorbelmenting greatly in high altitude, through innovation and design optimization to the concrete beam plate structure of encorbelmenting greatly, reduced the construction technology degree of difficulty, reduced the danger of high altitude construction, have advantages such as simple process, convenient operation, construction speed are fast, economic benefits is good, construction mechanization and industrialization degree height.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides a high altitude concrete beam plate structure of encorbelmenting greatly, including cast in situ concrete structural beam and prefabricated superimposed sheet greatly, cast in situ concrete structure beam inside of encorbelmenting greatly is furnished with the atress owner muscle, stirrup and constructional reinforcement, cast in situ concrete structure beam height highly subtracts original design cast in situ structural slab thickness for the effective cross-section height of the structural beam of encorbelmenting greatly, cast in situ concrete structure beam embedded connection reinforcing bar that encorbelments greatly, prefabricated superimposed sheet's anchor reinforcing bar is fixed with cast in situ concrete structure beam embedded connection reinforcing bar connection, prefabricated superimposed sheet is above for cast-in-place superimposed sheet, prefabricated superimposed sheet thickness equals design cast in situ structural slab thickness with cast in situ superimposed sheet thickness sum, form the high altitude concrete beam plate structure of encorbelmenting greatly.
The connecting steel bar of the cast-in-place concrete large cantilever structure beam comprises a vertical connecting short steel bar arranged in the middle of the top surface and a horizontal connecting steel bar communicated along the length direction of the beam.
The vertical connecting short steel bars of the cast-in-place concrete large cantilever structure beam are anchored in the cast-in-place concrete large cantilever structure beam, the distance between the vertical connecting short steel bars of the cast-in-place concrete large cantilever structure beam and the vertical connecting short steel bars of the cast-in-place concrete large cantilever structure beam is 200-1000mm along the length direction of the cantilever beam, the exposed length of the cast-in-place concrete large cantilever structure beam is 30-50mm, and the diameter of the steel bars is 8-16 mm.
The horizontal connecting steel bars of the cast-in-place concrete large cantilever structure beam are horizontally communicated along the length direction of the beam and are bound and connected with the vertical connecting short steel bars, and the diameter of each steel bar is 8-16 mm.
Two ends of the prefabricated composite slab are placed on the top surface of the cast-in-place concrete large cantilever structure beam; the cross-sectional shape of superimposed sheet is the rectangle, sets up the overhanging reinforcing bar of level at the position of being connected of prefabricated superimposed sheet and the structure roof beam of encorbelmenting greatly of cast in situ concrete to it is fixed with the ligature of the horizontal connection reinforcing bar of the structure roof beam top surface of encorbelmenting greatly of cast in situ concrete.
The utility model discloses to the high altitude concrete beam slab structure of encorbelmenting greatly carry out technological innovation and design optimization, greatly reduced the construction technology degree of difficulty of high altitude concrete beam slab structure of encorbelmenting greatly, only adopt traditional cast-in-place construction technology to the concrete structure roof beam of encorbelmenting greatly, replace the cast-in-place concrete board of traditional technology with precast concrete superimposed sheet, cancelled the template braced system of the concrete slab of encorbelmenting greatly, practiced thrift construction cost expense input by a wide margin; by optimizing the reinforcing bars of the structural beam, the cast-in-place height of the structural beam is reduced, so that the technical requirements of the large cantilever concrete structural beam on a self template support system are further reduced; the light steel structure shaping combined truss is used as a main stress and force transmission component of the cast-in-place cantilever structure beam formwork supporting system, so that the safety of the formwork supporting system is improved, the cost and investment are low, the installation and the removal are convenient, repeated turnover and use are convenient, and the construction technical difficulty of a high-altitude large cantilever operation platform is greatly reduced; the fabricated concrete composite slab produced by batch prefabrication in a factory has smooth and flat surface, no honeycomb pitted surface and appearance quality far higher than that of a cast-in-place concrete slab.
Drawings
FIG. 1 is a structural view of a high-altitude large cantilever concrete beam structure
FIG. 2 is a sectional view taken along line 2-2 in FIG. 1
FIG. 3 is a front view of a high-altitude large-cantilever cast-in-place concrete structure beam formwork supporting system
FIG. 4 is a top view of a high-altitude large-cantilever cast-in-place concrete structure beam formwork support system
FIG. 5 is a side view of a high altitude large cantilever cast-in-place concrete structure beam formwork support system
FIG. 6 is a side view of the installation of prefabricated composite slabs
FIG. 7 is a top view of the structure for mounting the prefabricated slab
FIG. 8 is a cross-sectional view taken along line 1-1 in FIGS. 6 and 7
FIG. 9 is an enlarged view of a portion 1 of FIG. 5
FIG. 10 is an enlarged view of a portion 2 of FIG. 5
In the figure: 1. cast-in-place concrete large cantilever structural beam; 2. a formwork support system; 3. shaping the combined truss by using a light steel structure; 4. connecting bolts for penetrating beams (walls); 5. connecting and fixing the steel plates; 6. the 2 nd layer of structural beam (shear wall) below the cantilever beam; 7. the 1 st layer of structural beam (shear wall) below the cantilever beam; 8. reserving beam (wall) penetrating bolt holes; 9. the light steel structure is horizontally connected with the beam; 10. a safety guard rail; 11. prefabricating a laminated slab; 12. vertically connecting short steel bars; 13. horizontally connecting the reinforcing steel bars; 14. Horizontally extending the steel bars outwards of the laminated slab; 15. and (5) laminating the layer concrete.
Detailed Description
In order to deepen the understanding of the present invention, the following detailed description is given with reference to the accompanying drawings, which are only used for explaining the present invention and do not constitute a limitation to the protection scope of the present invention.
The utility model discloses the high altitude concrete beam plate structure of encorbelmenting greatly is shown as figure 1-2, and the high altitude cast in situ concrete structure beam mold board braced system's that encorbelments greatly during the construction structure chart is shown as figure 3-5, and the structure chart of prefabricated superimposed sheet installation is shown as figure 6-8 during the construction.
From fig. 1-2 it is visible, the utility model relates to a high altitude concrete beam plate structure of encorbelmenting greatly, including cast in situ concrete structure roof beam and prefabricated superimposed sheet of encorbelmenting greatly, cast in situ concrete structure roof beam inside is furnished with the atress owner muscle, stirrup and constructional reinforcement, cast in situ concrete structure roof beam height of encorbelmenting greatly subtracts former design cast in situ structure board thickness degree for the effective cross-section height of design structure roof beam greatly, cast in situ concrete structure roof beam embedded joint bar that encorbelments greatly, prefabricated superimposed sheet's anchor reinforcement and cast in situ concrete structure roof beam embedded joint bar are fixed, prefabricated superimposed sheet's higher authority is cast-in-place superimposed sheet, prefabricated superimposed sheet thickness equals design cast in situ structure board thickness with cast in situ superimposed sheet thickness sum, form the high altitude concrete beam plate structure of encorbelmenting greatly.
The connecting steel bar of the cast-in-place concrete large cantilever structure beam comprises a vertical connecting short steel bar arranged in the middle of the top surface and a horizontal connecting steel bar communicated along the length direction of the beam.
Two ends of the prefabricated composite slab are placed on the top surface of the cast-in-place concrete large cantilever structure beam; the cross-sectional shape of superimposed sheet is the rectangle, sets up the overhanging reinforcing bar of level at the position of being connected of prefabricated superimposed sheet and the structure roof beam of encorbelmenting greatly of cast in situ concrete to it is fixed with the ligature of the horizontal connection reinforcing bar of the structure roof beam top surface of encorbelmenting greatly of cast in situ concrete.
The utility model discloses a construction process flow as follows:
reducing the section height of the cast-in-place concrete large cantilever structure beam, optimizing and adjusting a reinforcement scheme → calculating and designing a cast-in-place concrete large cantilever structure beam template supporting system → designing and manufacturing a light steel structure sizing combined truss and an auxiliary safety protection facility → installing the light steel structure sizing combined truss and the auxiliary safety protection facility → installing the cast-in-place concrete large cantilever structure beam template supporting system → constructing the cast-in-place concrete large cantilever structure beam → dismantling the template supporting system, the light steel structure sizing combined truss and the auxiliary facility → hoisting a prefabricated composite layer and constructing a composite layer.
S1, cast in situ concrete hangs the structure roof beam greatly:
Section height of cast-in-place concrete large cantilever structure beam is reduced, and reinforcing bar scheme is optimized and adjusted
Subtracting the thickness of the originally designed cast-in-place structural slab from the effective section height of the originally designed large cantilever structural beam to obtain the section height of the cast-in-place concrete large cantilever structural beam 1; and (3) taking the beam slab load of the original design cast-in-place structure, recalculating the reinforcement areas of the stressed main reinforcement, the stirrups and the constructional reinforcements according to the calculated cross-sectional height of the cast-in-place large cantilever structure beam and the original design concrete strength, and adjusting and optimizing the reinforcement of the large cantilever cast-in-place structure beam according to the calculated reinforcement areas (which need to be submitted to an original design unit for examination and approval).
Secondly, calculating and designing a cast-in-place concrete large cantilever structure beam template supporting system
And calculating the requirements of the cast-in-place concrete large cantilever structural beam 1 on the template supporting system 2 according to the optimized cantilever length and section size of the cast-in-place concrete large cantilever structural beam 1, calculating and designing the light steel structure shaping combination truss 3 and the connection and fixing system of the light steel structure shaping combination truss and the main structure according to the requirements, so that the requirements of the cast-in-place concrete large cantilever structural beam on the strength, rigidity and stability of the template supporting system 2 are met, and finally forming a template supporting system design scheme of the cast-in-place concrete large cantilever structural beam.
Designing and manufacturing light steel structure shaping combined truss and attached safety protection facility
According to the design scheme requirements of the template supporting system, manufacturing a light steel structure shaping combined truss 3, a beam (wall) penetrating connecting bolt 4 of a main body structure and a connecting and fixing steel plate 5; in the construction process of the lower 2 layers and the lower 1 layer of main structure of the floor where the cast-in-place concrete large cantilever structural beam 1 is located, beam (wall) penetrating bolt holes 8 are reserved on the 2 nd layer structural beam (shear wall) 6 below the cantilever beam and the 1 st layer structural beam (shear wall) 7 below the cantilever beam at the positions, equal to the two sides of the designed axis, of the cast-in-place concrete large cantilever structural beam 1, and torsion-resistant steel bars are configured on the structural beam (or the shear wall) with the reserved beam (wall) penetrating bolt holes 8 for reinforcement, so that the main structural beam (or the shear wall) at the position meets the strength and deformation requirements necessary for bearing the load transmitted by the light steel structure shaping combination truss 3.
Installing light steel structure shaping combined truss and auxiliary safety protection facility
Before the construction of the cast-in-place concrete large cantilever structure beam 1, according to the design scheme requirement of the template supporting system 2, the light steel structure shaping combination truss 3, the light steel structure horizontal connecting beam 9, the auxiliary safety protection railing 10 and the like are installed by adopting vertical hoisting equipment to form a high-altitude operation platform.
Formwork support system for installing cast-in-place concrete large cantilever structure beam
According to the design scheme of the template support system 2, the template support system 2 is erected on the high-altitude operation platform. The vertical rod bases of the template supporting system 2 are fixed on the light steel structure horizontal connecting beam 9 according to the design interval by bolts, then a template supporting scaffold, a beam bottom template and a beam side template are sequentially erected, and a fixing measure is adopted to form the template supporting system of the cast-in-place concrete large cantilever structure beam.
Construction of cast-in-place concrete large cantilever structure beam
Binding the steel bars of the cast-in-place concrete large cantilever structure beam 1, reserving vertical connecting short steel bars 12 and horizontal connecting steel bars 13 connected with the prefabricated laminated slab 11 on the upper surface of the steel bars, wherein the vertical connecting short steel bars 12 are anchored in the cast-in-place concrete large cantilever structure beam, the distance between the vertical connecting short steel bars 12 and the horizontal connecting steel bars is 200-1000mm along the length direction of the cantilever beam, the exposed length is 30-50mm, and the diameter of the steel bars is 8-16 mm; the horizontal connecting steel bars 13 are horizontally communicated along the length direction of the beam and are bound and connected with the vertical connecting short steel bars, and the diameter of each steel bar is 8-16 mm; and pouring concrete together with the structural beam plate on the same floor and maintaining in time.
Seventhly, dismantling the formwork support system, the light steel structure shaping combination truss and the accessory facilities
After the concrete strength of the cast-in-place concrete large cantilever structure beam 1 reaches 100% or more of the design strength, the beam template supporting system 2, the safety protection railing 10, the light steel structure horizontal connecting beam 9, the beam (wall) penetrating connecting bolt 4, the connecting and fixing steel plate 5, the light steel structure shaping combined truss 3 and the auxiliary components thereof are sequentially removed, and the structural construction of the cast-in-place concrete large cantilever structure beam 1 is completed.
S2, assembling the precast concrete composite slab:
hoisting prefabricated laminated slab
The section of the laminated slab is rectangular, a horizontal overhanging steel bar is arranged at the connecting part of the prefabricated laminated slab and the cast-in-place concrete large cantilever structure beam, the prefabricated concrete laminated slab 11 is hoisted by adopting vertical hoisting equipment, and two ends of the prefabricated laminated slab are placed on the top surface of the cast-in-place concrete large cantilever structure beam; connecting and fixing the horizontal overhanging steel bars 14 of the laminated slab with the horizontal connecting steel bars 13 of the cast-in-place concrete large cantilever structure beam 1, and binding the steel bars of the laminated slab;
second, construction of superposed layers
And pouring concrete on the prefabricated composite slab to form a poured composite layer concrete 15, forming a high-altitude large-cantilever concrete beam slab structure consistent with the original design, and finishing the construction of the high-altitude large-cantilever concrete beam slab structure.
Claims (5)
1. The utility model provides a high altitude concrete beam plate structure of encorbelmenting greatly, a serial communication port, including cast in situ concrete structural beam and prefabricated superimposed sheet of encorbelmenting greatly, cast in situ concrete encorbelmenting greatly inside of structural beam is furnished with the atress owner muscle, stirrup and constructional steel bar, cast in situ concrete encorbelments greatly the effective cross-section height of structural beam for encorbelmenting greatly and subtracts original design cast in situ structural slab thickness for the design, cast in situ concrete encorbelments structural beam embedded connection reinforcing bar greatly, prefabricated superimposed sheet's anchor reinforcing bar and cast in situ concrete encorbelmenting structural beam embedded connection are fixed, prefabricated superimposed sheet's higher authority is cast-in situ superimposed sheet, prefabricated superimposed sheet thickness equals design cast in situ structural slab thickness with cast in situ superimposed sheet thickness sum, form high altitude concrete beam plate structure of encorbelmenting greatly.
2. The high-altitude large-cantilever concrete beam structure according to claim 1, wherein the connecting steel bars of the cast-in-place concrete large-cantilever structure beam comprise vertical connecting short steel bars arranged in the middle of the top surface and horizontal connecting steel bars penetrating along the length direction of the beam.
3. The high-altitude large-cantilever concrete beam structure as claimed in claim 1, wherein the vertical connecting short steel bars of the cast-in-place concrete large-cantilever structure beam are anchored in the cast-in-place concrete large-cantilever structure beam, the distance between the vertical connecting short steel bars and the cast-in-place concrete large-cantilever structure beam is 200 mm and 1000mm along the length direction of the cantilever beam, the exposed length is 30-50mm, and the diameter of the steel bars is 8-16 mm.
4. The high-altitude large-cantilever concrete beam structure according to claim 1, wherein the horizontal connecting steel bars of the cast-in-place concrete large-cantilever structural beam are horizontally communicated along the length direction of the beam and are bound and connected with the vertical connecting short steel bars, and the diameter of the steel bars is 8-16 mm.
5. The high altitude large cantilever concrete beam structure according to claim 1, wherein both ends of the precast composite slab rest on the top surface of the cast-in-place concrete large cantilever structure beam; the cross-sectional shape of superimposed sheet is the rectangle, sets up the overhanging reinforcing bar of level at the position of being connected of prefabricated superimposed sheet and the structure roof beam of encorbelmenting greatly of cast in situ concrete to it is fixed with the ligature of the horizontal connection reinforcing bar of the structure roof beam top surface of encorbelmenting greatly of cast in situ concrete.
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| CN202023177424.5U CN214696077U (en) | 2020-12-25 | 2020-12-25 | High-altitude large-cantilever concrete beam plate structure |
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| CN202023177424.5U CN214696077U (en) | 2020-12-25 | 2020-12-25 | High-altitude large-cantilever concrete beam plate structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215172A (en) * | 2022-01-14 | 2022-03-22 | 中建三局第二建设工程有限责任公司 | Building structure with prefabricated cantilever plate and construction method thereof |
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2020
- 2020-12-25 CN CN202023177424.5U patent/CN214696077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215172A (en) * | 2022-01-14 | 2022-03-22 | 中建三局第二建设工程有限责任公司 | Building structure with prefabricated cantilever plate and construction method thereof |
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