CN103541478B - Lattice superposed beam and plate and construction method thereof - Google Patents
Lattice superposed beam and plate and construction method thereof Download PDFInfo
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- CN103541478B CN103541478B CN201310437206.6A CN201310437206A CN103541478B CN 103541478 B CN103541478 B CN 103541478B CN 201310437206 A CN201310437206 A CN 201310437206A CN 103541478 B CN103541478 B CN 103541478B
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Abstract
This invention is a kind of lattice superposed beam and plate, primarily of concrete edge shell, concrete middle rib, concrete cross rib, concrete drain pan, Prefabricated stacking floor, composition such as floor overlap joint rib and rear pouring concrete layer etc.Be concrete middle rib in the middle of the concrete edge shell of both sides, concrete cross rib is equidistantly evenly arranged along full beam, and the height of concrete edge shell and concrete cross rib is equal, and the height of concrete middle rib is 2/3rds of concrete edge shell height; Prefabricated stacking floor is I shape, and two ends have two floors overlap joint ribs respectively, and the end of Prefabricated stacking floor is to the outer ledge of concrete edge shell.The features such as effect of the present invention and advantage are that bearing capacity is high, easy construction, speed of application are fast, good economical benefit.Convenient transportation, not fragile in transportation, avoid in work progress wearing muscle, shorten man-hour, reduce cost.
Description
Technical field
The present invention relates to a kind of building structure new concrete superposed beam and plate, particularly relate to a kind of lattice superposed beam of prefabricated concrete structure and plate and construction method thereof.
Background technology
Assembly concrete building refers to the concrete prefabricated element based on factorial praluction.The concrete structure class building construction of being built by site-assembled patten's design.To water after overlapping layers concrete, Bar Anchorage pouring concrete connection etc. after the assembly method of component generally has scene, bar connecting can adopt sleeve to be in the milk to connect, welding, the way such as mechanical connection and the connection of reserving hole overlap joint.The eighties in 20th century, at the prefabricated large plate house that China is popular, due to reasons such as structural integrity is poor, seepage, cracks on floor slab, existing manyly affects structural safety and the normal hidden danger that uses and defect, gradually replace by cast-in-place concrete structure.But along with the application of current emerging prefabricated concrete structure, particularly introduced many advanced foreign technologies in recent years, localized prefabricated concrete structure is built new technology and is just progressively formed.
Along with the quickening of China's " industrialization of construction industry, housing industrialization " process, and the continuous minimizing of China's " demographic dividend ", the appearance of building trade recruitment famine, the trend of housing industry industrialization is day by day obvious.The application of prefabricated concrete structure becomes current research focus again, and all parts of the country continue to bring out out new technology, the new model of housing construction prefabricated concrete structure.Precast reinforced concrete construction is one of important directions of China's building structure development, and it is conducive to the development of China's industrialization of construction industry, energy conservation of enhancing productivity, development Green environmental-protection building, and is conducive to improving and ensureing construction engineering quality.Compared with cast-in-situ construction method; assembling reinforced concrete structure is conducive to green construction; because fabricated construction more can meet the saving land of green construction, energy-conservation, material-saving, the requirement such as water saving and environmental protection; reduce the negative effect to environment; comprise and reduce noise, prevent airborne dust, reduce environment pollution, clean transport, reduce place interference, save resource and the energy such as water, electricity, material, follow the principle of sustainable development.And, fabricated construction can complete multiple or whole operations of engineering continuously in order, thus reduce the engineering machinery kind and quantity of marching into the arena, that eliminates procedure connection rests the time, realize interchange operation, reduce constructor, thus improve work efficiency, reduction supplies consumption, minimizing environment pollution, for green construction provides safeguard.In addition, fabricated construction reduces building waste (accounting for the 30%-40% of municipal refuse total amount) largely, as steel scrap muscle, waste iron wire, useless bamboo timber, discarded concrete etc.
Assembly concrete building can be divided into full assembling and part assembling two large classes according to assemblingization degree height.Full assembling building is generally restricted to low layer or the lower multistory building of requirements for fortification against earthquake; Part assembling concrete construction main member is generally adopted prefabricated units, is connected by cast-in-situ concrete at the scene, forms the building of cast in place and precast construction.
North America region is mainly based on America & Canada.Because prefabricated/prestressed concrete association (PCI) studies for a long period of time and promotes pre-cast building, the Specification of precast concrete is also very perfect.So its assembly concrete Application in Building is very general.The pre-cast building of North America mainly comprises building prefabrication exterior wall and the large series of structure prefabricated units two, and the common feature of prefabricated units is that maximization and prestressing force combine.Can to optimize structure arrangement of reinforcement and connecting structure.Reduce and make and installation workload, shorten the Yi work duration, fully demonstrate industrialization, standardization and Technical Economy feature.In 20th century, the pre-cast building of North America is mainly used in the non-antidetonation fortified defence area of low layer.Due to the earthquake effect in area, California, pay much attention to the engineer applied technical research of antidetonation and precast construction on the middle and senior level in recent years.PCI has published " precast concrete seismic design " book recently, the seismic design problem of pre-cast building is analyzed from theory and practice angle system, summarizing the latest scientific research of many precast construction seismic design, to instructing precast construction design and engineer applied to promote, there is very strong directive significance.
Europe is the cradle of pre-cast building, just starts the road of industrialization of construction industry as far back as the 17th century.After World War II, due to human resources shortage, Europe is research and probe industrialization of construction industry pattern further.No matter economically developed Northern Europe, West Europe, or Eastern Europe underdeveloped, always all in the design and construction mode actively carrying out prefabrication and assembly construction concrete construction.Have accumulated the design and construction experience of many pre-cast buildings, define various special precast building system and standardized general prefabricated product line, and worked out a series of precast concrete engineering specification and application manual, in global application, very important effect is served to promotion precast concrete.
Japan and Korea S have used for reference American-European successful experience, on the standardized designs construction basis exploring pre-cast building.In conjunction with oneself requirement.Breakthrough is achieved in precast construction system globality antidetonation and shock design.Representative achievement be the Tokyo Tower of two 58 floor that Japan adopts prefabrication and assembly construction frame construction to build up for 2008.Meanwhile, the standard criterion that the precast concrete building system of Japan designs, makes and constructs is also very perfect, and the prefabricated specification used at present has " precast concrete engineering " (JASSl0) and " concrete curtain wall " (JASSl4).
China from the sixties in 20th century five begin one's study assembly concrete building design and construction technology, define a series of assembly concrete building system, comparatively typical building system has assembling single storey industry workshop building system, assembling multistory frame building system, assembled large panel building system etc.To the eighties in 20th century, the application of assembly concrete building reaches the period of full bloom, and national many places all define design, making and the assembly concrete industrialized building pattern of construction and installation integration.The masonry building of assembly concrete building and employing prefabricated hollow floor becomes two kinds of topmost building systems, and application popularization rate reaches more than 70%.Because the function of assembled architecture and physical property exist many limitations and deficiency, the assembly concrete architectural design of China and construction technology R & D Level also do not catch up with the change of social demand and Building technology development, to the mid-90 in 20th century, assembly concrete building is replaced by full cast-in-situ concrete building system gradually, at present except the application comparatively extensively of assembling single storey industry workshop building system.The engineer applied of other prefabrication systems is few.The globality of precast construction antidetonation and the specialization research of management in design and operation not, cause its Technical Economy poor.It is the basic reason causing precast construction to stagnate for a long time.
Between 1940 ~ nineteen forty-two of prestressed thin slab laminated floor slab, first Britain P.W. Abeles is proposed and bottom prestressed thin slab is formed a whole as template and top cast-in-situ concrete.The end of the forties, the states such as Britain, the Soviet Union, Switzerland, Sweden, France, Poland, Austria all started to adopt this kind of floor to the beginning of the fifties.60 ~ seventies develops rapidly, and particularly France and Germany have been widely used in all kinds of building construction at present.China manufactured experimently in 1980.Through the structural test of multiple span and different load, within 1981, adopt first in the Xiyuan Hotel engineering of Beijing 27 floor height, area about 20,000 square metres.After this, in the engineerings such as some high-rise tourist hotels, office building, diplomatic apartment, warehouse, be promoted.
Laminated floor slab is the prefabricated better form of structure of one combined with cast-in-situ concrete.Precast prestressed thin plate (thick 5 ~ 8 centimetres) and top cast-in-situ concrete layer are combined into as a whole, co-operation.Namely the main muscle of prestressing force of thin plate is the main muscle of laminated floor slab, and top concrete cast-in-situ layer only configures negative reinforcement and distributing bar.Prestressed thin slab is used as the bed die of cast-in-situ concrete layer, need not be in-situ layer support shuttering.Thin plate bottom surface is smooth, and plate seam after treatment, can no longer plaster by ceiling.This laminated floor slab have cast-in-situ floor globality, rigidity is large, crack resistance good, do not increase reinforcing bar consumption, save the advantages such as template.Because cast-in-situ floor does not need formwork, also have bulk precast concrete partition board can lift in the structure construction stage simultaneously, thus fitting-out work can be inserted in advance, shorten the duration of whole engineering.
Floor span, within 8 meters, can be widely used in the various building engineerings such as hotel, office building, school, house, hospital, warehouse, parking lot, multi storied industrial factory building.Prestressed thin slab is different by the structure of superposed surfaces, can be divided three classes: 1. the shear stress that bears of superposed surfaces is less, and superposed surfaces does not establish shear reinforcement, but requires that concrete upper surface is coarse, draw hair or stay some in conjunction with hole.2. the shear stress that bears of superposed surfaces is comparatively large, and thin sheet surface, except requiring coarse stroke of hair, also will set up shear reinforcement, and bar diameter and spacing are determined as calculated.The shape of reinforcing bar has waveform, spirality and spot welding mesh sheet to be bent into triangular section.3. prefabricated plate upper surface is provided with steel truss, in order to strengthen rigidity during sheet construction, reduces the support that thin plate sets up below.
Reinforced concrete slab is a part for iterative structure, is the prefabricated and cast-in-place a kind of form of structure combined.Superimposed sheet is in work progress, and first at basis rest prefabricated panel, the effect of its layer concrete lifting plate on building, then two parts concrete forms entirety and carrys out bearing load.Superimposed building version integrates cast-in-place and prefabricated advantage, is a kind of rising house demolition.
1) from stressed, for full prefabricated slab, integral rigidity and the anti-seismic performance of structure can be improved, when configuring same presstressed reinforcing steel, for the load action tension edge of total cross-section, the effective prestress that prefabricated cross section is set up is comparatively large, thus improves the cracking resistance of structure.Under the prerequisite of same cracking resistance, then can save the consumption of presstressed reinforcing steel.
2) from manufacture craft, the main part of the force of superimposed building version manufactures in factory, and mechanization degree is high, is easy to ensure the quality of products, and adopts continuous productive process speed of production fast, and can make in advance, do not account for the duration, and the template of pre-erection can be reused.Rear pouring concrete does template with prefabricated panel, more full cast-in-situ floor can reduce the workload of formwork, reduce job site wet trade, improve construction site condition, improve efficiency of construction, especially under the condition of work high above the ground or formwork difficulty, effect is obvious especially, and prefabrication is easy to the making realizing more complicated section form, for exploitation component load-bearing potentiality, reduce dead load and there is obvious advantage.Large span superimposed sheet also meets the developing direction of Modern Residence superstructure simultaneously.
3) long-term scientific experiment and engineering practice result show, adopt superimposed building version can obtain fairly obvious benefit in concrete structure engineering, and when combining employing high strength cast iron, amount of reinforcement reduces greatly.When combining the prefabricated cross section of employing empty stomach, can also save concrete amount, the duration also shortens accordingly, and its weak point is to add prefabricated processing and transporting and hoisting link.
4) reinforced concrete slab cross section is made up of prefabricated and cast-in-place two parts, their common service behaviours depend on the shear behavior of new and old superposed surfaces, therefore shear bond strength design is unusual part and parcel, visible reinforced concrete slab also has higher requirement to construction technology content, thinks that applying unit proposes stricter requirement especially at construction quality management aspect.
Mainly divide four aspect research laminated floor slabs
1) general principle of system introduction laminated floor slab structural system and application technology;
2) scheme comparison of superposed floor structural system, structure design and construction technology is studied;
3) research is compared to the technical-economic index of superposed floor structural system, the Technical Economy of the description concrete folding plate of system.
Summary of the invention
The object of the present invention is to provide a kind of lattice superposed beam and plate and construction method thereof, a kind of good integrity, power transmission be clear and definite mainly for developing, simple structure, safe and reliable, lattice superposed beam and the plate of saving material and easy construction.Effectively can solve the problem such as transport and constructional difficulties of superimposed sheet.
Object of the present invention is realized by following technical scheme:
Lattice superposed beam and plate overlap rib primarily of concrete edge shell, concrete middle rib, concrete cross rib, concrete drain pan, bottom longitudinal reinforcement, stirrup, waist muscle, Prefabricated stacking floor, floor, overlap rib protruding bar, the composition such as floor protruding bar and rear pouring concrete layer.It is characterized in that, be concrete middle rib in the middle of the concrete edge shell of both sides, concrete cross rib 3 is equidistantly evenly arranged along full beam, two ends do not arrange concrete cross rib, outermost concrete cross rib 3 is the half of two concrete cross rib 3 spacings apart from two ends length, the height of concrete edge shell and concrete cross rib 3 is equal, and the height of concrete middle rib 2 is 2/3rds of concrete edge shell 1 height, Prefabricated stacking floor is I shape, two ends have two floor overlap joint ribs respectively, the bottom of Prefabricated stacking floor and the end face sustained height of concrete edge shell and concrete cross rib 3, the end of Prefabricated stacking floor is to the outer ledge of concrete edge shell, the floor overlap joint rib of adjacent two panels Prefabricated stacking floor is placed on same concrete cross rib, the edge of floor overlap joint rib end to the two sides of concrete middle rib, bottom longitudinal reinforcement, stirrup, waist muscle, overlap joint rib protruding bar and floor protruding bar all overhanging, the floor protruding bar one_to_one corresponding of lattice superposed beam both sides, all reach concrete middle rib top, the overlap joint rib protruding bar of both sides staggers mutually, all reach the end of offside floor overlap joint rib.
The processing method of lattice superposed beam and plate:
The mould of a, making lattice superposed beam and plate;
Longitudinal reinforcement, stirrup, waist muscle bottom b, colligation, build and maintenance;
C, colligation Prefabricated stacking floor reinforcing bar, comprise overlap joint rib protruding bar, floor protruding bar, build and maintenance;
D, lattice superposed beam and post and other lattice superposed beams are installed and are overlapped;
E, plate and beam installed overlap;
F, build lattice superposed beam and plate and maintenance.
Advantage of the present invention and beneficial effect:
The features such as effect of the present invention and advantage are that bearing capacity is high, easy construction, speed of application are fast, good economical benefit.Convenient transportation, not fragile in transportation, avoid in work progress wearing muscle, shorten man-hour, reduce cost.
Accompanying drawing explanation
Fig. 1 is lattice superposed beam floor map.
Fig. 2 is Figure 1A-A generalized section.
Fig. 3 is lattice superposed beam and board plane schematic diagram.
In figure, 1 is concrete edge shell; 2 is concrete middle rib; 3 is concrete cross rib; 4 is concrete drain pan; 5 is bottom longitudinal reinforcement; 6 is stirrup; 7 is waist muscle; 8 is Prefabricated stacking floor; 9 is floor overlap joint rib; 10 is overlap joint rib protruding bar; 11 is floor protruding bar; 12 is rear pouring concrete layer.
Detailed description of the invention
Below in conjunction with technical scheme with reference to accompanying drawing, the present invention is described in detail.
The lattice superposed beam that the present invention proposes and plate are as shown in Fig. 1 ~ Fig. 3.Lattice superposed beam and plate overlap rib 9 primarily of concrete edge shell 1, concrete middle rib 2, concrete cross rib 3, concrete drain pan 4, bottom longitudinal reinforcement 5, stirrup 6, waist muscle 7, Prefabricated stacking floor 8, floor, overlap rib protruding bar 10, the composition such as floor protruding bar 11 and rear pouring concrete layer 12.It is characterized in that, be concrete middle rib 2 in the middle of the concrete edge shell 1 of both sides, concrete cross rib 3 is equidistantly evenly arranged along full beam, two ends do not arrange concrete cross rib 3, outermost concrete cross rib 3 is the half of two concrete cross rib 3 spacings apart from two ends length, the height of concrete edge shell 1 and concrete cross rib 3 is equal, and the height of concrete middle rib 2 is 2/3rds of concrete edge shell 1 height, Prefabricated stacking floor 8 is I shape, two ends have two floor overlap joint ribs 9 respectively, the bottom of Prefabricated stacking floor 8 and the end face sustained height of concrete edge shell 1 and concrete cross rib 3, the end of Prefabricated stacking floor 8 is to the outer ledge of concrete edge shell 1, the floor overlap joint rib 9 of adjacent two panels Prefabricated stacking floor 8 is placed on same concrete cross rib 3, the edge of floor overlap joint rib 9 end to the two sides of concrete middle rib 2, bottom longitudinal reinforcement 5, stirrup 6, waist muscle 7, overlap joint rib protruding bar 10 and floor protruding bar 11 all overhanging, floor protruding bar 11 one_to_one corresponding of lattice superposed beam both sides, all reach concrete middle rib 2 top, the overlap joint rib protruding bar 10 of both sides staggers mutually, all reach the end of offside floor overlap joint rib 9.
The mould of a, making lattice superposed beam and plate;
Longitudinal reinforcement 5, stirrup 6, waist muscle 7 bottom b, colligation, build and maintenance;
C, colligation Prefabricated stacking floor 8 reinforcing bar, comprise overlap joint rib protruding bar 10, floor protruding bar 11, build and maintenance;
D, lattice superposed beam and post and other lattice superposed beams are installed and are overlapped;
E, plate and beam installed overlap;
F, build lattice superposed beam and plate and maintenance.
Claims (2)
1. a lattice superposed beam and plate, comprise lattice superposed beam, Prefabricated stacking floor (8), floor overlap joint rib (9), overlap joint rib protruding bar (10), floor protruding bar (11) and rear pouring concrete layer (12), wherein, lattice superposed beam is by concrete edge shell (1), concrete middle rib (2), concrete cross rib (3), concrete drain pan (4), bottom longitudinal reinforcement (5), stirrup (6), waist muscle (7) forms, it is characterized in that: be concrete middle rib (2) in the middle of both sides concrete edge shell (1), concrete cross rib (3) is equidistantly evenly arranged along full beam, two ends do not arrange concrete cross rib (3), outermost concrete cross rib (3) is the half of two concrete cross rib (3) spacings apart from two ends length, the height of concrete edge shell (1) and concrete cross rib (3) is equal, the height of concrete middle rib (2) is 2/3rds of concrete edge shell (1) height, bottom longitudinal reinforcement (5) is a row, is arranged in concrete drain pan (4), stirrup (6) is arranged in concrete edge shell (1) with concrete middle rib (2), and the waist muscle in concrete middle rib and the waist muscle in concrete edge shell are positioned at sustained height, Prefabricated stacking floor (8) is I shape, two ends have two floors overlap joint rib (9) respectively, the bottom of Prefabricated stacking floor (8) and the end face sustained height of concrete edge shell (1) and concrete cross rib (3), the outer ledge of end to concrete edge shell (1) of Prefabricated stacking floor (8), floor overlap joint rib (9) of adjacent two panels Prefabricated stacking floor (8) is placed on same concrete cross rib (3), the edge of floor overlap joint rib (9) end to the two sides of concrete middle rib (2), bottom longitudinal reinforcement (5), stirrup (6), waist muscle (7), overlap joint rib protruding bar (10) and floor protruding bar (11) all overhanging, floor protruding bar (11) one_to_one corresponding of lattice superposed beam both sides, all reach concrete middle rib (2) top, the overlap joint rib protruding bar (10) of both sides staggers mutually, all reach the end of offside floor overlap joint rib (9).
2. a processing method for lattice superposed beam as claimed in claim 1 and plate, is characterized in that:
The mould of a, making lattice superposed beam and plate;
Longitudinal reinforcement (5), stirrup (6), waist muscle (7) bottom b, colligation, build and maintenance;
C, colligation Prefabricated stacking floor (8) reinforcing bar, comprise overlap joint rib protruding bar (10), floor protruding bar (11), builds and maintenance;
D, lattice superposed beam and post and other lattice superposed beams are installed and are overlapped;
E, plate and beam installed overlap;
F, build lattice superposed beam and plate and maintenance.
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| CN201310437206.6A CN103541478B (en) | 2013-09-24 | 2013-09-24 | Lattice superposed beam and plate and construction method thereof |
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| CN201310437206.6A CN103541478B (en) | 2013-09-24 | 2013-09-24 | Lattice superposed beam and plate and construction method thereof |
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| CN103541478B true CN103541478B (en) | 2015-11-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106869386A (en) * | 2017-02-21 | 2017-06-20 | 南昌大学 | A kind of recycled concrete superposed beam of high-strength construction waste and its construction method |
| CN109403544A (en) * | 2018-11-28 | 2019-03-01 | 桂林理工大学 | The production method of Reactive Powder Concrete composite beam |
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|---|---|---|---|---|
| DE1409976A1 (en) * | 1960-04-04 | 1969-02-20 | Nikolaus Closset | Process for the production of a reinforced concrete ribbed ceiling from in-situ concrete and formwork for carrying out the process |
| CN1553014A (en) * | 2003-05-29 | 2004-12-08 | 株式会社大宇建设 | Steel concrete assembled beam by asymmetric section steel beam |
| WO2007131284A1 (en) * | 2006-05-17 | 2007-11-22 | Associated Valaire Pty Ltd | Structural element and methods of use thereof |
| CN201649438U (en) * | 2010-02-02 | 2010-11-24 | 哈尔滨工业大学深圳研究生院 | FRP sea sand concrete beam slab |
| CN101967865A (en) * | 2010-06-13 | 2011-02-09 | 吴方伯 | Reinforced concrete hollow floor slab |
-
2013
- 2013-09-24 CN CN201310437206.6A patent/CN103541478B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1409976A1 (en) * | 1960-04-04 | 1969-02-20 | Nikolaus Closset | Process for the production of a reinforced concrete ribbed ceiling from in-situ concrete and formwork for carrying out the process |
| CN1553014A (en) * | 2003-05-29 | 2004-12-08 | 株式会社大宇建设 | Steel concrete assembled beam by asymmetric section steel beam |
| WO2007131284A1 (en) * | 2006-05-17 | 2007-11-22 | Associated Valaire Pty Ltd | Structural element and methods of use thereof |
| CN201649438U (en) * | 2010-02-02 | 2010-11-24 | 哈尔滨工业大学深圳研究生院 | FRP sea sand concrete beam slab |
| CN101967865A (en) * | 2010-06-13 | 2011-02-09 | 吴方伯 | Reinforced concrete hollow floor slab |
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