CN102433960A - Foam filled reinforced concrete hollow beam - Google Patents
Foam filled reinforced concrete hollow beam Download PDFInfo
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- CN102433960A CN102433960A CN2011103203682A CN201110320368A CN102433960A CN 102433960 A CN102433960 A CN 102433960A CN 2011103203682 A CN2011103203682 A CN 2011103203682A CN 201110320368 A CN201110320368 A CN 201110320368A CN 102433960 A CN102433960 A CN 102433960A
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Abstract
The invention discloses a foam filled reinforced concrete hollow beam. The hollow beam consists of concrete, a steel bar framework and filled foam; and the hollow beam comprises filled foam, stirrups, upper chord longitudinal ribs, lower chord longitudinal ribs, chord stirrups, pressed longitudinal ribs and tensile longitudinal ribs. The hollow beam is characterized in that: closed holes are reserved in a mid-span certain region and filled with the foam, the distance between the top of the holes and the top of the beam is a, the distance between the bottom of the holes and the bottom of the beam is b, and the reinforced concrete hollow beam at the high position of each layer and a column are cast into a whole. The distance a is longer than the distance b. The dead weight of the reinforced concrete beam can be reduced, the concrete material is saved, the manufacturing cost is lowered, and the earthquake resistance of a building is improved.
Description
Technical field
Patent of the present invention relates to a kind of reinforced concrete member field, is specifically related to a kind of being applied in the civil engineering
Foam-filled formula reinforced concrete hollow beam.
Background technology
Along with science and technology and rapid development of national economy; People require to improve constantly to the function of use of building; Many high levels and super highrise building are increasing; The deadweight that just will certainly increase building along with increasing of floor like this, influence its anti-seismic performance, also increased the cost of building simultaneously.The reinforced concrete beam of a kind of optimization of reinforced concrete hollow beam, distribution of internal force is superior to normal reinforced concrete beam, and deformation behaviour is similar with normal reinforced concrete beam again.The hollow design method of reinforced concrete beam can not only alleviate the deadweight of building; From becoming empty sectional analysis can also reduce quantity of reinforcement; The reinforced concrete hollow beam can make the heavier Reinforced Concrete Materials of deadweight in highrise building, obtain rational Application, has reduced material usage, obtains better economic property; Reference in the time of can supplying design high level, super highrise building is to alleviate the deadweight of building.
Present present situation:
1. the form of structure of normal reinforced concrete beam:
Normal reinforced concrete beam is as a kind of traditional beam form, and vertical muscle is drawn in the configuration of inner tensile region, bears the load that transmits behind the reinforced concrete beam cracking; Pressure zone configuration bearing rod; Effect is except that bearing pressure, is fixed on main steel bar stress (like main reinforcement, stirrup etc.) on the correct position; And be linked to be cage of reinforcement, thereby give full play to mechanical characteristic separately with main reinforcement.The section form of normal reinforced concrete beam is generally the square-section, sees Fig. 1.
2. belly is offered the form of structure of the reinforced concrete beam of circular hole:
Belly is offered the reinforced concrete beam of circular hole, is through offering circular opening in soffit of girder portion, and side configuration in hole is strengthened abdomen muscle (hole side stirrup, hole skew back muscle) cast and formed.Offer hole so that make equipment pipe at belly, do not influencing the clear height that reduces floor under the normally stressed situation of reinforced concrete beam from wherein passing through.The section form of the perforate beam of present domestic research is generally the perforate square-section, sees Fig. 2.
3. belly is offered the form of structure of the reinforced concrete beam of rectangular opening:
Belly is offered the reinforced concrete beam of rectangular opening, is through offering the rectangle hole in soffit of girder portion, hole side configuration abdomen muscle (hole side stirrup, hole skew back muscle), and the cast of lower chord chord pole band muscle forms on the hole upper and lower sides is provided with respectively.Offer hole so that make equipment pipe at belly, do not influencing the clear height that reduces floor under the normally stressed situation of reinforced concrete beam from wherein passing through.Common section form is the square-section, sees Fig. 3.
Present condition for application: at present, belly is offered the reinforced concrete beam of hole and is compared with normal reinforced concrete beam, and pipeline space and structure space are united two into one, and reduces building implements and the shared space of pipeline thereof with this.Not only a valid approach is provided, also helps to improve the visual effect of building for solving these contradictions; But simultaneously, also the structural performance of building structure, the space and the plane of structure are furnished with very big influence.Any boring method no matter all can weaken the cross section of member, and bearing of component, crack developing and distortion are all had very big influence, and when big, the maximum crack width of perforate beam obviously increases at the hole.Owing to accept the restriction of opinion research and design software, at present, when design, just design according to the entity beam, to effect on structure, do not brought serious hidden danger when considering vertical perforate to the safety of engineering structures.
The partial monopoly present situation:
1, inner sleeve type reinforced concrete hollow beam (application number: 200920280673)
This patent has been discussed inner sleeve type reinforced concrete hollow beam, it is characterized in that pipe in the center of reinforced concrete beam, forms the reinforced concrete hollow structure.Inner sleeve type reinforced concrete hollow beam can reduce the deadweight of reinforced concrete beam, practices thrift concrete material, and this beam can doublely be done the building penetration pipe.
2, a kind of reinforced concrete hollow beam and preparation method thereof (application number: 200910075736)
This patent has been discussed a kind of reinforced concrete hollow beam and preparation method thereof, long 7～8m, wide 0.2m; High 0.55m; In beam, the laterally arrange hole of four φ 100mm, Kong Yukong Center Gap 125mm, the lower limb in bottom hole is apart from the following 40mm of beam; The top edge in hole, the top is 35mm apart from the beam top, and the left and right edges in four holes is apart from each 50mm of beam right sides; The following 15mm of the following identity distance of beam, vertical respectively double 2 φ 12 indented barss of laying in each 10mm place of the right and left; Between laterally lay 2 groups 4 φ 12 indented barss side by side; 1 φ 10 indented bars is vertically laid at 15mm, each 10mm place of the right and left respectively apart from the beam top; And vertically wale 10 reinforcing bars with φ 5 steel wires, with the concreting moulding.This beam has that solid volume is little, and from heavy and light, cost is low, receives force intensity high, the advantage that success rate is high, but construction is complicated, is not suitable for general building.
Comprehensive above analysis is visible, in the perforate reinforced concrete beam, also exists many drawbacks.
Summary of the invention
The purpose of patent of the present invention is to improve section form, alleviates deadweight, improves the anti-seismic performance of building, the economical with materials consumption.
Technical scheme of the present invention is following:
Foam-filled formula reinforced concrete hollow beam; It comprises filled and process, stirrup, the vertical muscle of upper chord, the vertical muscle of lower chord, chord member stirrup, the vertical muscle of pressurized, is drawn vertical muscle; It is characterized in that: in the certain zone of span centre, stay and establish cap holes, and fill with foam (1), the hole end face apart from top surface of the beam certain apart from a; The distance b that the hole bottom surface is certain far from the soffit is one at every layer floor height place reinforced concrete hollow beam and whole the watering of post.Apart from a greater than distance b.In the upper and lower side of hole the vertical muscle (3) of upper chord, vertical muscle (4) the chord pole band muscle (5) of lower chord are set respectively, hole side configuration stirrup (2), for the ease of cast, fill with foam (1) at the hole place.Floor height place and whole the watering of post that the beam of this kind form needs only at every layer are one.
Because foam can be ignored to the stress performance influence of beam, this way can be considered the reinforced concrete hollow beam.The beam normal section bearing capacity is formed by stacking two parts, is respectively the closing of stack of concrete part and the two-part bearing capacity of reinforcing bar part.Reinforced concrete hollow beam section sketch map is seen accompanying drawing 4, accompanying drawing 5.Because the reinforced concrete hollow beam is along the center line bilateral symmetry, so the reinforced concrete hollow beam that only draws among Fig. 5 is parallel to the sketch map of natural axis direction cross section right half part.
The present invention improves section form, has alleviated deadweight, improves the anti-seismic performance of building, the economical with materials consumption.
Description of drawings
Fig. 1 is existing normal reinforced concrete beam sketch map.
Fig. 2 opens the reinforced concrete beam sketch map of circular hole for existing belly.
Fig. 3 opens the reinforced concrete beam sketch map of rectangular opening for existing belly.
Fig. 4 is that the reinforced concrete hollow beam is perpendicular to natural axis direction schematic cross-section.
Fig. 5 is parallel to natural axis direction schematic cross-section for the reinforced concrete hollow beam.
Fig. 6 is frame construction reinforced concrete hollow beam, post node sketch map.
Among the figure: the 1st, pressurized is indulged muscle; The 2nd, drawn vertical muscle; The 3rd, stirrup; The 4th, circular port; The 5th, upper chord is indulged muscle; The 6th, lower chord is indulged muscle; The 7th, the chord member stirrup; The 8th, rectangular opening; The 9th, filled and process.
The specific embodiment
With reference to the accompanying drawings patent of the present invention is elaborated.
The basic comprising of foam-filled formula reinforced concrete hollow beam system is: stay in the certain zone of span centre and establish cap holes, for the ease of cast, the hole place is with foam-filled, and the cross section is shown in accompanying drawing 4, accompanying drawing 5; Whenever layer by layer whole the watering of eminence reinforced concrete hollow beam and post be one, shown in accompanying drawing 6.Adopt hollow to handle in the certain zone of reinforced concrete beam span centre, like this can the economical with materials consumption, reduce cost, the more important thing is the deadweight that has alleviated building, improve its anti-seismic performance.
The problem of noting:
(1), the concrete mix, the slump that are adopted should meet the requirements, and for satisfying slump requirement, answers an amount of water reducing agent of admixture; For reducing concrete shrinkage, can in concrete, mix an amount of concrete micro-expanding agent.
(2), before the fluid concrete, foreign material need be cleaned out in the reinforcing cage; Concrete building should be carried out continuously, and in the time of intermittently, the intermittent time should not surpass concrete final setting time, in order to avoid the phenomenon of layering occurs; Want to vibrate in the process of cast, make concrete reach closely knit while pouring into a mould.
(3) according to the sized filled and process of rectangle hole, and be fixed in corresponding position in the reinforcing cage, in order to avoid in the process of cast, slippage takes place.
The making step of the cored steel reinforced concrete of patent of the present invention is following:
The first step: assembling reinforcement is fixed on the hole location place with filled and process;
Second step: make template;
The 3rd step: fluid concrete;
The 4th step: beam, post are put in order and watered together;
Carry out according to above-mentioned steps, promptly can be made into foam-filled formula reinforced concrete hollow beam.
Claims (4)
1. foam-filled formula reinforced concrete hollow beam; It comprises filled and process, stirrup, the vertical muscle of upper chord, the vertical muscle of lower chord, chord member stirrup, the vertical muscle of pressurized, is drawn vertical muscle; It is characterized in that: in the certain zone of span centre, stay and establish cap holes, and fill with foam (9), the hole end face apart from top surface of the beam certain apart from a; The distance b that the hole bottom surface is certain far from the soffit is one at every layer floor height place reinforced concrete hollow beam and whole the watering of post.
2. foam-filled formula reinforced concrete hollow beam according to claim 1 is characterized in that: apart from a greater than distance b.
3. foam-filled formula reinforced concrete hollow beam according to claim 1; It is characterized in that: the vertical muscle (5) of upper chord, vertical muscle (6) the chord pole band muscle (7) of lower chord are set respectively in the upper and lower side of hole; Hole side configuration stirrup (3); For the ease of cast, fill with foam (9) at the hole place.
4. foam-filled formula reinforced concrete hollow beam according to claim 1 is characterized in that: floor height place and whole the watering of post that the beam of this kind form needs only at every layer are one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103203682A CN102433960A (en) | 2011-10-20 | 2011-10-20 | Foam filled reinforced concrete hollow beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103203682A CN102433960A (en) | 2011-10-20 | 2011-10-20 | Foam filled reinforced concrete hollow beam |
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| Publication Number | Publication Date |
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| CN102433960A true CN102433960A (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103203682A Pending CN102433960A (en) | 2011-10-20 | 2011-10-20 | Foam filled reinforced concrete hollow beam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421240A (en) * | 2015-11-09 | 2016-03-23 | 安徽省新路建设工程集团有限责任公司 | Construction method for concrete hollow beam self-falling frame inner mold |
| CN106939962A (en) * | 2017-04-11 | 2017-07-11 | 中冶华天南京工程技术有限公司 | Adjustable die mould cylinder type gas cabinet piston ring beam |
| CN106969253A (en) * | 2017-04-11 | 2017-07-21 | 中冶华天南京工程技术有限公司 | Dry gas-holder piston steel-concrete composed box girder |
| CN111188460A (en) * | 2020-02-19 | 2020-05-22 | 广州地铁设计研究院股份有限公司 | Concrete beam reinforcing structure |
| CZ308485B6 (en) * | 2019-01-31 | 2020-09-16 | České vysoké učenà technické v Praze | Lightweight concrete element with textile reinforcement and a method of its production |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297837A (en) * | 2006-04-28 | 2007-11-15 | Okumura Corp | Beam member made of reinforced concrete |
| CN101701484A (en) * | 2009-10-14 | 2010-05-05 | 苑玉山 | Reinforced concrete hollow beam and fabricating method thereof |
| CN101736857A (en) * | 2009-12-04 | 2010-06-16 | 山东科技大学 | Hollow reinforced concrete beam |
| CN201567719U (en) * | 2009-12-09 | 2010-09-01 | 山东科技大学 | Inner casing pipe type armoured concrete hollow beam |
| CN201794214U (en) * | 2010-09-28 | 2011-04-13 | 杨峰 | Prefabricated beam with cavity |
-
2011
- 2011-10-20 CN CN2011103203682A patent/CN102433960A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007297837A (en) * | 2006-04-28 | 2007-11-15 | Okumura Corp | Beam member made of reinforced concrete |
| CN101701484A (en) * | 2009-10-14 | 2010-05-05 | 苑玉山 | Reinforced concrete hollow beam and fabricating method thereof |
| CN101736857A (en) * | 2009-12-04 | 2010-06-16 | 山东科技大学 | Hollow reinforced concrete beam |
| CN201567719U (en) * | 2009-12-09 | 2010-09-01 | 山东科技大学 | Inner casing pipe type armoured concrete hollow beam |
| CN201794214U (en) * | 2010-09-28 | 2011-04-13 | 杨峰 | Prefabricated beam with cavity |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421240A (en) * | 2015-11-09 | 2016-03-23 | 安徽省新路建设工程集团有限责任公司 | Construction method for concrete hollow beam self-falling frame inner mold |
| CN106939962A (en) * | 2017-04-11 | 2017-07-11 | 中冶华天南京工程技术有限公司 | Adjustable die mould cylinder type gas cabinet piston ring beam |
| CN106969253A (en) * | 2017-04-11 | 2017-07-21 | 中冶华天南京工程技术有限公司 | Dry gas-holder piston steel-concrete composed box girder |
| CZ308485B6 (en) * | 2019-01-31 | 2020-09-16 | České vysoké učenà technické v Praze | Lightweight concrete element with textile reinforcement and a method of its production |
| CN111188460A (en) * | 2020-02-19 | 2020-05-22 | 广州地铁设计研究院股份有限公司 | Concrete beam reinforcing structure |
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Application publication date: 20120502 |