CN115874747A - Large-span concrete dense-row beam floor - Google Patents
Large-span concrete dense-row beam floor Download PDFInfo
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- CN115874747A CN115874747A CN202211539231.0A CN202211539231A CN115874747A CN 115874747 A CN115874747 A CN 115874747A CN 202211539231 A CN202211539231 A CN 202211539231A CN 115874747 A CN115874747 A CN 115874747A
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- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000000945 filler Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000006260 foam Substances 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
A large-span concrete dense-row beam floor comprises dense-row beams, concrete floors, reinforcing steel bars and connecting beams, wherein the height of the section of each dense-row beam is preferably 1/24-1/18 of the span; the dense beams and the concrete plates on the upper side and the lower side form an I-shaped stress unit; the densely arranged beams are connected into a whole by the connecting beams in series and bear local loads or concentrated loads; through the structural arrangement of the invention, the bending resistance can be enhanced, the section height is effectively reduced by about 30 percent compared with the traditional concrete beam, and the dense beams are connected into a whole in series through the connecting beams and can simultaneously bear local loads or concentrated loads. The invention is preferably made in a concrete cast-in-place mode, and the construction quality control of concrete, steel bars, templates and the like is in accordance with the national relevant standard requirements. For the filler filling the gaps between the dense beams, a material with light weight, such as a foam board, should be used, and the filler is not removed after construction.
Description
Technical Field
The invention belongs to the technical field of buildings, and relates to a large-span concrete dense-row beam floor system.
Background
In a traditional concrete structure, the section size of a densely-arranged beam depends on factors such as span, load size, supporting conditions, building design requirements and the like, and according to engineering experience, in order to meet requirements such as normal use limit state and the like, for example, the deflection of the beam cannot be too large, the densely-arranged beam is subjected to structural design.
In the traditional concrete member, the span of a concrete beam is generally not more than 12-15 meters, the maximum height of the beam section is more than 1.5 meters, and the design requirements cannot be met for a building space with a higher net height requirement, and meanwhile, the conditions of large construction difficulty, difficult control of construction quality, poor economy and the like are caused. The prior floor system adopts multi-ribbed beams, and compared with densely arranged beams, the multi-ribbed beams have the defects of uneven stress, ribbed beams with ribbed ribs and complex structure.
When the design span is more than 18-20 m and above, the steel structure truss, the steel structure roof and the like are often adopted, so that economic waste is caused. At present, when the design span of a building space is between 12 and 20 meters, the economic and reasonable floor system structure forms are few, and for a ribbed floor system or a cross beam floor system with the length-width ratio larger than 1.5, the beam in the long span direction basically does not participate in stress, so that the beam can be properly reduced or even cancelled during the structural design.
The dense-row beam floor system has more advantages in the construction process, and the technical effects of optimizing the dense-row beam floor system structure and achieving the purposes of increasing bending resistance, being more economical in construction and higher in construction efficiency.
Disclosure of Invention
The invention aims to provide a large-span concrete dense-row beam floor system to solve the existing problems.
A large-span concrete dense-row beam floor comprises dense-row beams, an upper concrete floor, a lower concrete floor, reinforcing steel bars and connecting beams, wherein the height h of the section of each dense-row beam is 1/24-1/18 of the span W.
The dense beams, the upper concrete plate and the lower concrete plate form an I-shaped stress unit.
The connecting beams connect the densely arranged beams to form a whole body.
The densely-arranged beams are uniformly distributed, the transverse intervals of the densely-arranged beams are the same, and the transverse interval of the densely-arranged beams is 250-500mm; the connecting beams are uniformly distributed, and the transverse intervals of the connecting beams are 2000-3000mm, so that the stress is uniform.
When one of the thicknesses of the upper concrete floor or the lower concrete floor exceeds 130mm, a double-layer bidirectional reinforcing bar mode is adopted.
The invention is suitable for the design of building floor systems with the structural span of 12-20 meters. When there is reliable computational verification, the application size can be relaxed appropriately.
The beneficial effects of the invention are:
1. the invention provides a novel floor system form, which solves the problems that structural members occupy larger space and cause economic waste when the span of a floor slab is 12-20 meters.
2. All components are stressed uniformly, so that the bending resistance of the concrete floor can be enhanced, and the later-stage cracking condition of the concrete slab is reduced.
3. The floor bottom side is for leveling the structure, compares with traditional beam slab structure, has reduced the template during the construction and has erect the degree of difficulty, has reduced beam side template material and has dropped into.
Drawings
FIG. 1 is a three-dimensional schematic of the present invention;
FIG. 2 is a schematic three-dimensional cross-sectional view of the present invention;
FIG. 3 is a schematic view of a single dense beam of the present invention;
description of the reference numerals:
l is the length direction; w is the span direction; h is the height of the section of the densely arranged beam; a is the transverse spacing of the close-packed beams; b is the transverse distance of the connecting beams; 1. an upper concrete floor; 2. densely arranging beams; 3. a lower concrete floor; 4. and connecting the beams.
Detailed Description
Referring to fig. 1 to 3, the large-span dense-row concrete beam floor according to the present invention is further described, and as shown in fig. 1, the large-span dense-row concrete beam floor includes: dense-row beams 2, an upper concrete floor 1, a lower concrete floor 3, reinforcing steel bars and connecting beams 4, wherein the height h of the section of the dense-row beams is 1/24 to 1/18 of the span W.
The concrete floor is composed of an upper concrete floor 1 and a lower concrete floor 3, and the thickness of the upper concrete floor 1 and the thickness of the lower concrete floor 3 are both 100-150mm;
when one of the thicknesses of the upper concrete floor 1 or the lower concrete floor 3 exceeds 130mm, a double-layer bidirectional reinforcing bar mode is adopted; the preferred embodiment is that the thickness of the upper concrete floor slab 1 and the lower concrete floor slab 3 both exceed 130mm, a double-layer bidirectional reinforcing bar mode is adopted, wherein the double-layer bidirectional reinforcing bar mode is usually adopted for floor slab design in the field of buildings, and the double-layer bidirectional reinforcing bar mode is adopted for enhancing the bearing capacity and the anti-cracking capacity.
The minimum reinforcement of concrete floor adopts phi 8@ 200's rule of arranging to satisfy minimum reinforcement rate, minimum reinforcement rate is that the building engineering structural design standard requires for trade universal requirement about reinforcing bar minimum number configuration, wherein phi 8@200 is general reinforcing bar model in the building engineering. The preferred embodiment is that the upper concrete floor 1 and the lower concrete floor 3 both adopt the arrangement rule of phi 8@200 and meet the minimum reinforcement ratio.
The dense beams and the upper and lower two layers of concrete floor slabs form an I-shaped section which is a main stress unit, a schematic diagram of a single dense beam 2 is shown in figure 3, and the shadow part of figure 3 is the dense beam.
The dense beams 2 and the connecting beams 4 are described in detail with reference to fig. 2, and the dense beams 2 and the connecting beams 4 are described in detail with reference to fig. 2.
The densely-arranged beams 2 are uniformly distributed, the transverse intervals A of the densely-arranged beams 2 are the same, the transverse intervals A of the densely-arranged beams are 250-500mm, the connecting beams 4 are uniformly distributed, and the transverse intervals B of the connecting beams 4 are the same, and are 2000-3000mm, so that the stress is uniform.
The connecting beams 4 connect the connecting dense-arranged beams 1, and the connecting beams 4 play a role in connecting the dense-arranged beams 1, so that the dense-arranged beams are mutually alternated to form a whole and can bear local surface load or point load at the same time;
the steel bar arrangement of the densely arranged beams meets the related requirement of the minimum reinforcement ratio;
a preparation method of a large-span concrete dense-row beam floor comprises the following steps:
preferably, the densely-arranged beam floor is manufactured in a cast-in-place mode;
preferably, before the dense-row beam floor system is cast in place, the bottom side formwork of the floor system is provided with the arching of about 3/1000 according to the specification requirement.
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to the drawings. It should be noted that the drawings provided in this embodiment are only for schematically illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings and not drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of each component in actual implementation may be arbitrarily changed, and the component layout may be more complicated.
The invention is manufactured by firstly selecting a concrete cast-in-place mode, and the construction quality control of concrete, reinforcing steel bars, templates and the like is in accordance with the national relevant standard requirements. For the filler filling the gaps between the dense beams, a material with light weight, such as a foam board, should be used, and the filler is not removed after construction.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a dense row of roof beam of large-span concrete superstructure, includes dense row roof beam (2), goes up concrete floor (1), concrete floor (3), reinforcing bar, tie-beam (4) down, its characterized in that: the height (h) of the section of the dense beam (2) is 1/24 to 1/18 of the span (W).
2. The large-span concrete dense-spaced beam floor system as claimed in claim 1, wherein the dense-spaced beams (2) form an I-shaped stress unit with the upper concrete plate (1) and the lower concrete plate (3).
3. A large span concrete dense-spaced floor system as claimed in claim 1, wherein the connecting beams (4) connect the dense-spaced beams (2) so that the dense-spaced beams (2) are integrated with each other.
4. The large-span concrete dense-row beam floor system according to claim 1, characterized in that: the densely arranged beams (2) are uniformly distributed, the transverse intervals (A) of the densely arranged beams (2) are the same, and the transverse interval (A) of the densely arranged beams is 250-500mm; the connecting beams (4) are uniformly distributed, and the transverse intervals (B) of the connecting beams (4) are the same and are 2000-3000mm, so that the stress is uniform.
5. The large-span dense concrete girder floor system of claim 1, wherein: when the thickness of one concrete floor in the thickness of the upper concrete floor (1) or the lower concrete floor (3) exceeds 130mm, a double-layer bidirectional reinforcing bar mode is adopted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211539231.0A CN115874747A (en) | 2022-12-01 | 2022-12-01 | Large-span concrete dense-row beam floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211539231.0A CN115874747A (en) | 2022-12-01 | 2022-12-01 | Large-span concrete dense-row beam floor |
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| Publication Number | Publication Date |
|---|---|
| CN115874747A true CN115874747A (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211539231.0A Pending CN115874747A (en) | 2022-12-01 | 2022-12-01 | Large-span concrete dense-row beam floor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB721440A (en) * | 1950-05-05 | 1955-01-05 | Belge De Construction D Habita | A process for the production of a hollow-floor structure and elements therefor |
| CN2761758Y (en) * | 2004-12-27 | 2006-03-01 | 付礼协 | Hidden close rib plateless hollow flooring constructed by on-site pouring concrete |
| CN202577703U (en) * | 2012-05-14 | 2012-12-05 | 天津住宅集团建设工程总承包有限公司 | Ribbed cast-in-place concrete floor |
| CN209011399U (en) * | 2018-08-17 | 2019-06-21 | 大连三川建设集团股份有限公司 | Reinforced concrete hollow overlaps two-way ribbed slab floor |
| CN114164978A (en) * | 2021-12-29 | 2022-03-11 | 湖北大成空间科技股份有限公司 | One-way multi-ribbed cavity floor module for steel structure and construction method thereof |
| CN217896921U (en) * | 2021-12-31 | 2022-11-25 | 湖北大成空间科技股份有限公司 | Bidirectional ribbed cavity floor module for steel structure |
-
2022
- 2022-12-01 CN CN202211539231.0A patent/CN115874747A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB721440A (en) * | 1950-05-05 | 1955-01-05 | Belge De Construction D Habita | A process for the production of a hollow-floor structure and elements therefor |
| CN2761758Y (en) * | 2004-12-27 | 2006-03-01 | 付礼协 | Hidden close rib plateless hollow flooring constructed by on-site pouring concrete |
| CN202577703U (en) * | 2012-05-14 | 2012-12-05 | 天津住宅集团建设工程总承包有限公司 | Ribbed cast-in-place concrete floor |
| CN209011399U (en) * | 2018-08-17 | 2019-06-21 | 大连三川建设集团股份有限公司 | Reinforced concrete hollow overlaps two-way ribbed slab floor |
| CN114164978A (en) * | 2021-12-29 | 2022-03-11 | 湖北大成空间科技股份有限公司 | One-way multi-ribbed cavity floor module for steel structure and construction method thereof |
| CN217896921U (en) * | 2021-12-31 | 2022-11-25 | 湖北大成空间科技股份有限公司 | Bidirectional ribbed cavity floor module for steel structure |
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