CN202208986U - Bidirectional prestressed hollow floor for malting tower - Google Patents
Bidirectional prestressed hollow floor for malting tower Download PDFInfo
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- CN202208986U CN202208986U CN2011202571377U CN201120257137U CN202208986U CN 202208986 U CN202208986 U CN 202208986U CN 2011202571377 U CN2011202571377 U CN 2011202571377U CN 201120257137 U CN201120257137 U CN 201120257137U CN 202208986 U CN202208986 U CN 202208986U
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Abstract
The utility model discloses a bidirectional prestressed hollow floor for a malting tower, prestressed beams and a reinforced concrete ring beam are connected, a prestressed steel bar curve is distributed in the prestressed beams, prestressed steel bar anchoring devices are used at the end parts of the prestressed beams and on the ring beam for anchoring to form prestressed reinforced concrete beams; reinforced concrete prefabricated cavities are fixed on a die plate, the upper and lower parts of the reinforced concrete prefabricated cavities are provided with cast-in-situ reinforced concrete floor slabs, the internals of the floor slabs are provided with steel bars; distribution of the reinforced concrete prefabricated cavities forms the prestressed beams. prestressed steel bars and constructional steel bars distributed in the prestressed beams form the prestressed steel bars, forming the steel bar frame of the prestressed beams. The prestressed steel bars are in a curve arrangement, the prestressed steel bars at the two ends of the prestressed beams are distributed at the upper part, and the prestressed steel bars in the middle section of the prestressed beams are distributed at the lower part. The bidirectional prestressed hollow floor in the utility model is advantaged by more convenient installation, reduction of deadweight of floor slabs, reduction of earthquake effect; good heat insulation sound and insulation performances, reduction of energy consumption, reduction of floor height of structure, and increase of floor utilization space.
Description
Technical field
The invention belongs to construction work light industry field, more specifically relate to a kind of system wheat tower two dimension prestressing hollow building cover, be applicable to system wheat tower internal span big (diameter is more than 18 meters), and the center is not provided with the concrete floor of post.
Background technology
Prestressed concrete technology has been used above 50 years in China.Prestressed concrete can be given full play to reinforcing bar and concrete characteristic separately, can improve rigidity, crack resistance and the durability of reinforced concrete member, can effectively utilize the concrete of high strength cast iron and high strength grade.With compared with normal concrete, have under similarity condition that member section is little, good from heavy and light, quality, material is economized (can practice thrift steel 40%～50%, concrete 20%～40%), and can be enlarged prefabricated assembling degree.Though prestressed concrete construction needs special plant equipment, the technology more complicated, operation is had relatively high expectations, and in the bigger structure of span, its overall economic efficiency is better.In addition, within the specific limits, replace steel work, can practice thrift steel, reduce cost and remove maintenance work from prestressed reinforced concrete construction.
Cast-in-situ hollow building roof is a kind of new technology that recent two decades grows up, and has from the characteristics that heavy and light, materials are economized, bearing capacity is big, attractive in appearance, can reduce geological process, has good heat-and sound-insulating performance.Over past ten years; The advantage that the pre-stress hollow superstructure of the two combination is had collection cassette ceiling and prestressing technique; In using span scope, can alleviate the floor deadweight effectively, practice thrift steel and concrete amount, strengthen structural integrity; Possibly obtain favorable economic benefit and social benefit generally, and obtain function of use preferably.
The pre-stress hollow superstructure is of many uses: be applicable to large span office building, teaching building, exhibit halls, parking building, factory building, warehouse etc., concrete advantage has: span strengthens, and obtains preferable usage space; Can reduce bright beam or adopt mushroom construction, increase the floor clear height to greatest extent; Can alleviate dead load, reduce vertical the support and key dimension; The hollow floor can obtain good sound insulation, effect of heat insulation; The template construction difficulty reduces, and speeds up.
Big diameter multi-layer floor system Mai Tazhong, for reducing the span of beam slab, standing have central post, and the multilayer floor system Mai Ta that central post is not set generally adopts prestressing force or non-prestressed solid slab, causes from great, and bearing capacity is low, the consequence of poor seismic behavior.After adopting the two dimension prestressing hollow building cover, the deadweight that can alleviate superstructure greatly improves the stress performance of structure, strengthens the economy and the safety of structure.
Because system wheat tower two dimension prestressing hollow building cover system is the combination of multiple technologies, multiple material, difficulty of construction can increase than general data, so difficulty of construction is higher, needs the constructor must be through professional training, and needs design and construction to combine closely.
Summary of the invention
The purpose of the utility model is to be to provide a kind of system wheat tower two dimension prestressing hollow building cover, notes getting surely reasonably plate top thickness degree and plate base thickness degree during design, and the intercostal width is controlled rational hollow rate.There are big stress raisers in prestressed cored slab at prestressed reinforcement stretch-draw end and anchored end, reaches the whole cross section of hollowcore slab uniformly for making precharge pressure, enough solid area should be arranged to realize the compressive stress diffusion at stretch-draw end and anchored end.Rib of slab concrete lateral restraint poor performance need be provided with stirrup and form the dark beam of structure.The periphery of hollow building cover and beam, post, wall junction are provided with the solid band of certain width, to improve the local bearing capacity of being cut.
In order to realize above-mentioned purpose, the utility model adopts following technical measures:
A kind of system wheat tower two dimension prestressing hollow building cover; It is made up of prestressed girder, reinforced concrete prefabricated cavity, reinforced concrete circle beam, first distributing bar, prestressed reinforcement, prestressed reinforcement ground tackle, template; It is characterized in that: prestressed girder is connected with reinforced concrete circle beam; The prestressed reinforcement curve distribution in prestressed girder, and on prestressed girder end and reinforced concrete circle beam with the anchoring of prestressed reinforcement ground tackle, form prestressed steel reinforced concrete beam; Reinforced concrete prefabricated cavity is fixed on the template, and reinforced concrete prefabricated cavity has in-situ reinforced concrete slab up and down, lays reinforcing bar in the floor; The distribution of reinforced concrete prefabricated cavity forms prestressed girder.
The distribution prestressed reinforcement and first distributing bar, second distributing bar form prestressed girder in the described prestressed girder, become the cage of reinforcement of prestressed girder.
Described prestressed reinforcement becomes arrangement of curves, and prestressed girder two ends prestressed reinforcement is distributed in top, and prestressed girder stage casing prestressed reinforcement is distributed in the bottom.
Prestressed girder is connected with reinforced concrete circle beam, and its effect is to form the superstructure skeleton system, as the back-up system of superstructure; The prestressed reinforcement curve distribution in prestressed girder, and on prestressed girder end and reinforced concrete circle beam with the anchoring of prestressed reinforcement ground tackle, form prestressed steel reinforced concrete beam; Prestressed girder two ends prestressed reinforcement is distributed in top, and prestressed girder stage casing prestressed reinforcement is distributed in the bottom.Between two-layer cast-in-place plate, be furnished with reinforcing bar in the cast-in-place plate about reinforced concrete prefabricated cavity is fixed on, link to each other with prestressed concrete beam, form complete stress system like this through reinforcing bar.
General sequence is following during construction: nonprestressed reinforcement-girt strip reinforcing bar-preheating embedding line-laying presstressed reinforcing steel at the bottom of preparation of construction-Zhi template-colligation hollowcore slab-fixing-colligation plate face reinforcing bar-prestressed node installs-latent check receipts-concreting-at least 28 day after prestressed stretch-draw-anchoring-end grout sealing.
The utility model compared with prior art has the following advantages and effect:
1) owing to remove central post, make apparatus arrangement more flexible, equipment is easier for installation;
2) plate is a hollowcore slab, has alleviated the floor deadweight, has reduced geological process, can practice thrift cost, increases the safety of structure;
3) have good heat-and sound-insulating performance, can satisfy the substantially invariable requirement of system wheat tower temperature, and cut down the consumption of energy;
4) can reduce the structure floor height, increase floor and utilize the space.Adopt dark beam, attractive in appearance and be easy to the finishing;
Description of drawings
Fig. 1 is a kind of system wheat tower two dimension prestressing hollow building cover plan view.
Fig. 2 is a kind of system wheat tower two dimension prestressing hollow building cover sectional drawing.
Fig. 3 is a kind of prestressed girder partial enlarged drawing.
Fig. 4 is a kind of prestressed reinforcement sketch map
Wherein: 1-prestressed girder, the reinforced concrete prefabricated cavity of 2-, 3-reinforced concrete circle beam, 4-barrel, 5-first distributing bar, the 6-second structure stirrup, 7-prestressed reinforcement, 8-prestressed reinforcement ground tackle, 9-template, 10-in-situ reinforced concrete slab.
The specific embodiment
A kind of system wheat tower two dimension prestressing hollow building cover; It is made up of prestressed girder 1, reinforced concrete prefabricated cavity 2, reinforced concrete circle beam 3, barrel 4, first distributing bar 5, the second structure stirrup 6, prestressed reinforcement 7, prestressed reinforcement ground tackle 8, template 9; Its annexation is: prestressed girder 1 is connected with reinforced concrete circle beam 3, and its effect is to form the superstructure skeleton system; Reinforced concrete prefabricated cavity 2 is placed in the in-situ reinforced concrete slab 10, lays reinforcing bar in the in-situ reinforced concrete slab 10 and is connected with reinforced concrete circle beam 3 with prestressed girder 1, forms whole superstructure jointly; Prefabricated hollow 2 all is fixed on the template 9 with reinforced concrete floor 10 during construction, is supported by the interim support system under the template 9, and in-situ reinforced concrete slab floor 10 is built to finish and reached stripping 9 after the intensity; Prestressed reinforcement 7 curve distribution and are anchored on the barrel 4 with prestressed reinforcement ground tackle 8 on prestressed girder 1 end and reinforced concrete circle beam 3 in prestressed girder 1; The cage of reinforcement of distribution prestressed reinforcement 7 and first distributing bar 5, second distributing bar, 6 formation prestressed girders 1 in the prestressed girder 1, first distributing bar 5, second distributing bar 6 all stretch into barrel 4 and carry out anchoring; Prestressed girder 1 two ends prestressed reinforcement 7 is distributed in top, and prestressed girder 1 stage casing prestressed reinforcement 7 is distributed in the bottom.
A kind of system wheat tower two dimension prestressing hollow building cover the time at first should rationally be confirmed the thickness of superstructure in design, and the thickness of general superstructure is 1/30～1/45 of system wheat tower diameter, and load hour is got low value, gets the high value when big.Superstructure stressedly mainly bear by prestressed girder 1, calculate the internal force of every prestressed girder, confirm the sectional dimension of prestressed reinforcement, the distortion of checking computations prestressing force superstructure makes Deformation control in 30～40mm; Rationally confirm the sectional dimension of reinforced concrete circle beam 3, reinforced concrete circle beam 3 and barrel 4 pressure of opposing prestressed reinforcement that fuses, and being distributed on the ring beam of pressure equalizing of regulating each prestressed reinforcement; Make floor construction template 9; Fixing reinforced concrete prefabricated cavity 2 is on template 9; The construction prestressed reinforcement 7 and first distributing bar 5, second are constructed stirrup 6, template 9, the interior reinforcing bar of ring beam, control the space length and the size of various reinforcing bars, guarantee to reach designing requirement; Concreting, and curing concrete treat that the concrete curing time reaches 28 days post tensioning prestressed reinforcements 7, should the stretch-draw of symmetrical branch during stretch-draw, and prestressed anchorage of reinforcement 8, guarantee that prestressed reinforcement 7 pressure are applied on the barrel 4 equably; Accomplish and split out superstructure template 9 after prestressed reinforcement is installed; Like a kind of system of Fig. 1～Fig. 4 wheat tower two dimension prestressing hollow building cover; It comprises: prestressed girder 1 is connected with reinforced concrete circle beam 3; Prestressed reinforcement 7 curve distribution in prestressed girder 1, and on prestressed girder 1 end and ring beam 3 with 8 anchorings of prestressed reinforcement ground tackle; Reinforced concrete prefabricated oral cavity 2 is fixed on the template 9, and the distribution of reinforced concrete prefabricated cavity 9 forms prestressed girder 1; The distribution prestressed reinforcement 7 and first distributing bar 5, second are constructed stirrup 6 and are formed prestressed girders 1 in the prestressed girder 1; 7 one-tenth arrangement of curves of prestressed reinforcement, prestressed girder 1 two ends prestressed reinforcement 7 is distributed in top, and prestressed girder 1 stage casing prestressed reinforcement 7 is distributed in the bottom.
Claims (3)
1. make wheat tower two dimension prestressing hollow building cover for one kind; It comprises prestressed girder (1), reinforced concrete prefabricated cavity (2), reinforced concrete circle beam (3), prestressed reinforcement (7), prestressed reinforcement ground tackle (8), template (9); It is characterized in that: prestressed girder (1) is connected with reinforced concrete circle beam (3); Prestressed reinforcement (7) curve distribution is in prestressed girder (1); And in prestressed girder (1) end and reinforced concrete circle beam (3) go up with prestressed reinforcement ground tackle (8) anchoring formation prestressed steel reinforced concrete beam (1); Reinforced concrete prefabricated cavity (2) is fixed on the template (9), and reinforced concrete prefabricated cavity (2) has in-situ reinforced concrete slab (10) up and down, lays reinforcing bar in the floor; The distribution of reinforced concrete prefabricated cavity (2) forms prestressed girder (1).
2. a kind of system wheat tower two dimension prestressing hollow building cover according to claim 1; It is characterized in that: interior distribution prestressed reinforcement of described prestressed girder (1) (7) and first distributing bar (5), second distributing bar (6) form prestressed girder (1), become the cage of reinforcement of prestressed girder (1).
3. a kind of system wheat tower two dimension prestressing hollow building cover according to claim 1; It is characterized in that: described prestressed reinforcement (7) becomes arrangement of curves; Prestressed girder (1) two ends prestressed reinforcements (7) are distributed in top, and prestressed girder (1) stage casing prestressed reinforcement (7) is distributed in the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202571377U CN202208986U (en) | 2011-07-20 | 2011-07-20 | Bidirectional prestressed hollow floor for malting tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202571377U CN202208986U (en) | 2011-07-20 | 2011-07-20 | Bidirectional prestressed hollow floor for malting tower |
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| Publication Number | Publication Date |
|---|---|
| CN202208986U true CN202208986U (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202571377U Expired - Lifetime CN202208986U (en) | 2011-07-20 | 2011-07-20 | Bidirectional prestressed hollow floor for malting tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790577A (en) * | 2015-04-20 | 2015-07-22 | 中国民航大学 | Boundary beam solidification type large-bay prestressed concrete floor structure |
| CN105569243A (en) * | 2014-11-06 | 2016-05-11 | 齐齐哈尔大学 | Self-supporting pre-stress combination beam lightweight aggregate concrete composite slab |
| CN109707089A (en) * | 2019-02-24 | 2019-05-03 | 东北石油大学 | The floor system and its construction method that GRC hollow box body compoboard is constituted |
| CN110107007A (en) * | 2019-06-05 | 2019-08-09 | 江西联保工程咨询有限公司 | A kind of prefabricated hidden beam parts of two dimension prestressing prefabricated reinforced concrete cassette ceiling |
-
2011
- 2011-07-20 CN CN2011202571377U patent/CN202208986U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569243A (en) * | 2014-11-06 | 2016-05-11 | 齐齐哈尔大学 | Self-supporting pre-stress combination beam lightweight aggregate concrete composite slab |
| CN104790577A (en) * | 2015-04-20 | 2015-07-22 | 中国民航大学 | Boundary beam solidification type large-bay prestressed concrete floor structure |
| CN109707089A (en) * | 2019-02-24 | 2019-05-03 | 东北石油大学 | The floor system and its construction method that GRC hollow box body compoboard is constituted |
| CN110107007A (en) * | 2019-06-05 | 2019-08-09 | 江西联保工程咨询有限公司 | A kind of prefabricated hidden beam parts of two dimension prestressing prefabricated reinforced concrete cassette ceiling |
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Granted publication date: 20120502 |