CN102094458A - Simulated frame structure of long-span prestressed concrete slab - Google Patents

Simulated frame structure of long-span prestressed concrete slab Download PDF

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Publication number
CN102094458A
CN102094458A CN 201010561002 CN201010561002A CN102094458A CN 102094458 A CN102094458 A CN 102094458A CN 201010561002 CN201010561002 CN 201010561002 CN 201010561002 A CN201010561002 A CN 201010561002A CN 102094458 A CN102094458 A CN 102094458A
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CN
China
Prior art keywords
frame
slab
prestressed concrete
span prestressed
reinforcing bar
Prior art date
Application number
CN 201010561002
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Chinese (zh)
Inventor
柳忠林
Original Assignee
柳忠林
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to CN201020147951 priority Critical
Priority to CN201010131587.1 priority
Priority to CN201020147951.9 priority
Priority to CN201010131587 priority
Application filed by 柳忠林 filed Critical 柳忠林
Priority to CN 201010561002 priority patent/CN102094458A/en
Publication of CN102094458A publication Critical patent/CN102094458A/en

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Abstract

The invention belongs to the technical field of the structure of constructional engineering, in particular relates to a simulated frame structure of a long-span prestressed concrete slab. The structure is as follows: after a frame column and a longitudinal frame beam are installed, single-T plates of flange-free or flange-removed prestressed hollow single-T beam slabs, multi-T box beams, trough plates or rectangular beams are installed close to two sides of the frame column; a structure erecting reinforcing bar is arranged on the frame column transversely; a bottom formwork is hung along the arris or side surface on the plate or the erecting reinforcing rib and level to the bottom of prestressed concrete slab; a reinforcing bar of a cross beam is arranged in the space formed by the formwork, connected with the reinforcing bar of the frame column and connected by using a stirrup; and finally, a frame beam, namely a simulated frame beam is formed after casting and stirring of concrete according to the specification. The section of the simulated frame beam is reduced; and the flanges of the T-shaped plates do not need to be cut off, thus the cost is reduced, and the construction benefit and the prefabrication benefit are improved.

Description

The large-span prestressed concrete beam slab draft frame structure

Technical field

The invention belongs to the building engineering structure technical field, be specifically related to a kind of large-span prestressed concrete beam slab draft frame structure.

Background technology

Large-span prestressed concrete beam slab is many T box-girder, groove type plate and contain single T beam slab etc. (hereinafter to be referred as the T template) of hollow single T beam slab and rectangular beam is external uses early wherein.Its maximum advantage is: span is big, can build huge pillar apart from longspan structure; Rise low (0.45~1.085m, be about roof truss structure height<roof truss height add the roofing plate hight>1/3~1/4), can significantly reduce depth of building, reach saving metal material and energy; Good stability does not need additional lateral support; The member wide coverage has then been finished the Structural Engineering amount of whole building roof system after installation effectiveness height, plate are installed, become one of building roof structure form that replaces the tool advantage of traditional roof system just gradually.

It is big from the anharmonic ratio steel work, and outside the span that is difficult to reach bigger, its durability, fire resistance and high class of loading but are that steel work hardly matches.

But it must be noted that, present this beam slab overwhelming majority is used for the floor plate structural element of roof panel and non-frame construction, and be obstructed for the application of the DESIGN TREND OF MODERN INDUSTRIAL ARCHITECTURE that has a large capacity and a wide range, public building, commercial building middle frame structure, thereby the large-scale popularization that has limited this large span sheet material is to a great extent used.It is used the reason of being obstructed and mainly contained two: one in frame construction, do not find the structural calculation model and the corresponding design structure method that are complementary with it as yet.It is investigated and prefabricated leading to scheme all contents of not mentioned this respect, and also do not have this related content at " Code for design of concrete structures " and " seismic design provision in building code " of China with the local mark of prestressed concrete handbook and China in the U.S..But document has a clause regulation: do not allow to adopt the hinged frame structure in the earthquake protection area.The 2nd, design the frame construction crossbeam (this be unique can satisfy engineering drawing examine necessary a kind of selection) of this large span member by the design code of code requirement as principle by the conventional frame structure, yet its consequence not only cruciform bracing cross section is big, heavy, not only attractive in appearance, the usage space of influence building, recruitment materials increase considerably, and difficulty of construction is big.Because this crossbeam must site operation, this just is difficult to reasonable coupling with the sequence of construction of this beam slab, thereby spins out the construction period.This has just fundamentally offset this large span member characteristics of high efficiency has been installed.Existing several engineering example has obtained proof.Adopting this method to be designed to frame construction person as this does not almost have, and is a kind of theoretic hypothesis.

Summary of the invention

The objective of the invention is to be used for frame construction and lack the structure design building method that is complementary or adapts with it at large-span prestressed concrete beam slab, and technology and the very poor drawback of economic feasibility by the existence of conventional frame structure design, a kind of large-span prestressed concrete beam slab draft frame structure is provided, thereby increase substantially efficiency of construction, reduce cost, in frame construction, embody the advantage of large span prestressed concrete plate.

Technical scheme of the present invention is as follows: a kind of large-span prestressed concrete beam slab draft frame structure, comprise frame column and frame rails, wherein, remove the edge of a wing or remove many T of large span prestressed concrete box-shaped beam slab on the part edge of a wing or contain hollow single T beam slab at interior large span prestressed concrete list T beam slab or contain the hollow rectangle beam in that a side is installed near the frame column both sides, form the crossbeam side form at interior no edge of a wing large span prestressed concrete rectangular beam or large span prestressed concrete trough slab; Establish the beam bottom board of suspention along the side form underframe, in the space that side form and soffit formwork form and the reinforcing bar of beam is set in the space that makes progress, disturbing concrete constitutes cruciform bracing in accordance with regulations---intend Vierendeel girder, in beam, fill the EPS plate, intend Vierendeel girder and form " draft frame structure " with large-span prestressed concrete beam slab, frame column, longeron.

Further, aforesaid large-span prestressed concrete beam slab draft frame structure, wherein, the reinforcing bar of described beam is a nonprestressed reinforcement.

Further, aforesaid large-span prestressed concrete beam slab draft frame structure, wherein, the upright reinforcing bar of plate upper frame is set on the prestress concrete girder slab top, set up the crossbeam longitudinal reinforcement that is connected with the frame column reinforcing bar, or set up the crossbeam longitudinal reinforcement top that is connected with the frame column reinforcing bar, and connect with reliable stirrup.

Further, aforesaid large-span prestressed concrete beam slab draft frame structure, wherein, intend the weight of Vierendeel girder and upper load thereof because prestress concrete girder slab and non-prestressed plan Vierendeel girder pass on the prestress concrete girder slab of both sides being out of shape the more large and complete portion of difference under the gravity load effect, thereby it had both become the rod member of no load, can dispose by the minimal construction arrangement of reinforcement; Become no moment of flexure rod member again, under horizontal loading or geological process, draw or the rod member of pressure for mainly bearing.

Beneficial effect of the present invention is as follows: intend Vierendeel girder and compare with the conventional frame beam, its ratio of performance to price advantage is outstanding, mainly be reflected in two aspects: the one, easy construction, efficiency of construction improves more than 3 times than conventional frame beam, and intends Vierendeel girder and can realize the assembled integral construction; The 2nd, material (concrete and reinforcing bar) consumption can reduce significantly.Material usage increases with span, and conventional frame beam growth trend is more obvious, and especially its amplification is bigger when plate is striden greater than 18m, highlights the infeasibility of its technical-economic index.According to the impact analysis of Vierendeel girder coupled columns, conventional frame beam section analogy Vierendeel girder is big, and its material usage to frame column that causes also increases thereupon, increases 20% at least as post concrete consumption, and amount of reinforcement also can increase, but does not count this increment.And the cross section is too greatly very not attractive in appearance, is the one of the main reasons that can't realize yet.

This shows the design structure method problem that adopts draft frame structure not only to solve this class sheet material, and improve more than 3 times than conventional frame efficiency of construction, material usage reduces half at least, and the beam slab span reduces about 5 times during greater than 18m, and attractive in appearance, Here it is value of the present invention place.

Description of drawings

Fig. 1 is a structural representation of intending Vierendeel girder when adopting trough slab;

Fig. 2 intends the structural representation of Vierendeel girder for adopting hollow single T beam;

Fig. 3 is a structural representation of intending Vierendeel girder when adopting many T box-shaped;

Fig. 4 is a structural representation of intending Vierendeel girder when adopting the hollow rectangle beam.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is described in detail.

After treating that frame column and frame rails are installed, the large-span prestressed concrete beam slab formation beam side that one side does not have the edge of a wing or do not have the part edge of a wing is being installed near the frame column both sides, set up the beam bottom board of suspention along side form, the reinforcing bar (nonprestressed reinforcement) of beam slightly upwards is set in the space that soffit formwork forms, comprises longitudinal rib and stirrup that the upright reinforcing bar of plate upper frame is connected with the frame column reinforcing bar.Disturbing concrete has promptly constituted the plan cruciform bracing in accordance with regulations.Intend Vierendeel girder and form " draft frame structure " with large-span prestressed concrete beam slab, frame column, longeron etc.

Because intending Vierendeel girder is non-prestressed member, the prestressing force beam slab of its its both sides of deformation ratio etc. are much bigger, and whole vertical force loads of therefore intending Vierendeel girder are delivered on the plate of its both sides by concrete bonding or the cementation of tenon key therebetween.In the structure design, also considered the most reliable power transmission safeguard measure simultaneously especially: even the crack appears in the concrete of intending between Vierendeel girder and this beam slab, be that concrete adhesion strength is when entirely ineffective (although this probability is very little), then there is the reliable stirrup that is connected 6. (to see accompanying drawing), the load of this beam can be passed on the plate by transverse structure reinforcing bar with the Liang Neibanding setting.And the pulling force that this stirrup provided is at least more than 7 times of the whole loads of plan Vierendeel girder.Therefore this plan Vierendeel girder has become no load or zero load rod member under the gravity load effect; Under horizontal loading or geological process, it constitutes horizontal effect or the distortion that the cruciform bracing strengthened and frame column are resisted structure jointly with the beam slab of its both sides again.

As shown in Figure 1, treat that 1. frame column is installed with the frame column longeron after, 1. one page trough slab respectively is being installed 3. in both sides near frame column, form beam side, set up the beam bottom board of suspention along side form, on the beam slab of both sides, horizontal handling reinforcement is set 4..6. 5. the beam longitudinal rib that setting is connected with the frame column reinforcing bar thereon connect with stirrup again, and disturbing concrete has promptly constituted cruciform bracing in accordance with regulations---intend Vierendeel girder.In beam, fill the EPS plate.

As shown in Figure 2, after treating that 1. frame column is installed with the frame column longeron, 1. hollow single T beam slab that one page do not have the edge of a wing or do not have a part edge of a wing respectively is being installed 3. in both sides near frame column, also can a side be installed by hollow single T beam slab that no edge of a wing opposite side is installed the no part edge of a wing, form beam side, set up the beam bottom board of suspention along side form, on the beam slab of both sides, horizontal handling reinforcement is set 4..6. 5. the beam longitudinal rib that setting is connected with the frame column reinforcing bar thereon connect with stirrup again, and disturbing concrete has promptly constituted cruciform bracing in accordance with regulations---intend Vierendeel girder.In beam, fill the EPS plate.

As shown in Figure 3, after treating that 1. frame column is installed with the frame column longeron, 1. many T box-girder that one page do not have the edge of a wing or do not have a part edge of a wing respectively is being installed 3. in both sides near frame column, also can a side be installed by many T box-girder that no edge of a wing opposite side is installed the no part edge of a wing, form beam side, set up the beam bottom board of suspention along side form, on the beam slab of both sides, horizontal handling reinforcement is set 4..6. 5. the beam longitudinal rib that setting is connected with the frame column reinforcing bar thereon connect with stirrup again, and disturbing concrete has promptly constituted cruciform bracing in accordance with regulations---intend Vierendeel girder.In beam, fill the EPS plate.

As shown in Figure 4, treat that 1. frame column is installed with the frame column longeron after, near frame column 1. both sides each install contain the hollow rectangle beam rectangular beam 3., form beam side, set up the beam bottom board of suspention along side form, on the beam slab of both sides, horizontal handling reinforcement is set 4..6. 5. the beam longitudinal rib that setting is connected with the frame column reinforcing bar thereon connect with stirrup again, and disturbing concrete has promptly constituted cruciform bracing in accordance with regulations---intend Vierendeel girder.In beam, fill the EPS plate.

Above-mentioned many T box-girder, hollow single T plate or hollow rectangle beam or trough slab etc. play the template of intending Vierendeel girder, the supporting of suspention soffit formwork and the effect of construction operation platform in work progress.Intend Vierendeel girder and form " draft frame structure " with large-span prestressed plate, frame column, longeron etc.

In sum, the essence and the core technology of draft frame structure are: intending Vierendeel girder and be no load rod member under the gravity load effect, is mainly to bear to draw or the rod member of pressure under horizontal loading or geological process.Therefore intend the force mode that is subjected to that framework (beam) has exceeded the conventional frame structure, and become the rod member that mainly bears pressure, on the structural mechanics angle, this is the optimal stress of structure, and this also is the reason place that is called " plan framework ".Therefore intend Vierendeel girder joint construction uniqueness, simple, can design by MIN structure requirement arrangement of reinforcement (minimum steel ratio μ=0.2% of regulation and stipulation), but the degree of safety of structure or reliability are more much higher than conventional frame beam.

Obviously, those skilled in the art can carry out change on the various forms and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (4)

1. large-span prestressed concrete beam slab draft frame structure, comprise frame column and frame rails, it is characterized in that: remove the edge of a wing or remove many T of large span prestressed concrete box-shaped beam slab on the part edge of a wing or contain hollow single T beam slab at interior large span prestressed concrete list T beam slab or contain the hollow rectangle beam in that a side is installed near the frame column both sides, form the crossbeam side form at interior no edge of a wing large span prestressed concrete rectangular beam or large span prestressed concrete trough slab; Establish the beam bottom board of suspention along the side form underframe, in the space that side form and soffit formwork form and the reinforcing bar of beam is set in the space that makes progress, disturbing concrete constitutes cruciform bracing in accordance with regulations---and intend Vierendeel girder, intend Vierendeel girder and form " draft frame structure " with large-span prestressed concrete beam slab, frame column, longeron.
2. large-span prestressed concrete beam slab draft frame structure as claimed in claim 1 is characterized in that: the reinforcing bar of described beam is a nonprestressed reinforcement.
3. large-span prestressed concrete beam slab draft frame structure as claimed in claim 1 or 2, it is characterized in that: the upright reinforcing bar of plate upper frame is set on the prestress concrete girder slab top, set up the crossbeam longitudinal reinforcement that is connected with the frame column reinforcing bar, or set up the crossbeam longitudinal reinforcement top that is connected with the frame column reinforcing bar, and connect with reliable stirrup.
4. large-span prestressed concrete beam slab draft frame structure as claimed in claim 1, it is characterized in that: intend the weight of Vierendeel girder and upper load thereof because prestress concrete girder slab and non-prestressed plan Vierendeel girder pass on the prestress concrete girder slab of both sides being out of shape the more large and complete portion of difference under the gravity load effect, thereby it had both become the rod member of no load, can dispose by the minimal construction arrangement of reinforcement; Become no moment of flexure rod member again, under horizontal loading or geological process, draw or the rod member of pressure for mainly bearing.
CN 201010561002 2010-03-03 2010-11-20 Simulated frame structure of long-span prestressed concrete slab CN102094458A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201020147951 2010-03-03
CN201010131587.1 2010-03-03
CN201020147951.9 2010-03-03
CN201010131587 2010-03-03
CN 201010561002 CN102094458A (en) 2010-03-03 2010-11-20 Simulated frame structure of long-span prestressed concrete slab

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Application Number Priority Date Filing Date Title
CN 201010561002 CN102094458A (en) 2010-03-03 2010-11-20 Simulated frame structure of long-span prestressed concrete slab

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CN2010206287337U CN201962792U (en) 2010-03-03 2010-11-20 Longspan prestressed concrete beam slab simulation framework structure
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Publication number Priority date Publication date Assignee Title
CN102864839A (en) * 2012-10-13 2013-01-09 柳忠林 Virtual beam used in large-span prestressed concrete beam plate frame structure

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CN102061770A (en) * 2010-03-03 2011-05-18 柳忠林 Construction method for imitated frame structure of long-span prestressed concrete beam slab
CN102337784B (en) * 2011-07-13 2013-07-10 葛加君 Method for constructing reinforced concrete frame of tall curved tower
CN102587554B (en) * 2012-02-29 2015-06-03 黑龙江宇辉新型建筑材料有限公司 Laminated concrete slab connected by bending reinforcing steel bars by 180 degrees within span and connection method
CN102653968A (en) * 2012-03-15 2012-09-05 中国建筑科学研究院 Inner tensioning pre-stressed concrete single-layer I-shaped framework box-type structure
CN104775620B (en) * 2013-08-20 2017-03-01 南通鑫金建设集团有限公司 The complete fast construction method of high-rise frame node different intensity grades concrete sort permutation
CN104499715A (en) * 2014-12-08 2015-04-08 江苏中南建筑产业集团有限责任公司 Template overhanging construction method for floor system with composite structure by utilizing profiled steel beams

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EP1371794A1 (en) * 2002-06-14 2003-12-17 Tecnostudi SRL Improvements in a self-supporting lattice to provide steel-concrete composite beams for housing and industrial building
CN101363260A (en) * 2007-11-19 2009-02-11 青岛市金潮特种混凝土制品有限责任公司 Special technology of frame structure of wide span prestressed concrete plate
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CN102864839A (en) * 2012-10-13 2013-01-09 柳忠林 Virtual beam used in large-span prestressed concrete beam plate frame structure

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CN201962792U (en) 2011-09-07
CN102061770A (en) 2011-05-18

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Application publication date: 20110615