CN102425231A - Reinforcement lightweight aggregate concrete flat beam structure - Google Patents

Reinforcement lightweight aggregate concrete flat beam structure Download PDF

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Publication number
CN102425231A
CN102425231A CN2011104382849A CN201110438284A CN102425231A CN 102425231 A CN102425231 A CN 102425231A CN 2011104382849 A CN2011104382849 A CN 2011104382849A CN 201110438284 A CN201110438284 A CN 201110438284A CN 102425231 A CN102425231 A CN 102425231A
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China
Prior art keywords
flat
aggregate concrete
light weight
weight aggregate
reinforcement
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CN2011104382849A
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Chinese (zh)
Inventor
季韬
张永霞
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Fuzhou University
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Fuzhou University
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Priority to CN2011104382849A priority Critical patent/CN102425231A/en
Publication of CN102425231A publication Critical patent/CN102425231A/en
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Abstract

The invention relates to a reinforcement lightweight aggregate concrete flat beam structure which comprises a column, a beam and a plate, wherein the beam is a flat beam made of a reinforcing steel bar and lightweight aggregate concrete, the width of the flat beam is more than or equal to the height; and the column is a reinforcement lightweight aggregate concrete column. The reinforcement lightweight aggregate concrete flat beam structure provided by the invention also has better properties of light weight, energy saving, environment friendliness, good durability and the like of the lightweight aggregate concrete under the condition of the advantages of reducing floor height, avoiding pipeline beam crossing and the like, greatly reduces self gravity of the whole building structure and improves earthquake resistant behaviour of the structure while ensuring bearing capacity, and has remarkable economic and social benefits.

Description

The flat girder construction of a kind of arrangement of reinforcement light weight aggregate concrete
Technical field
The present invention relates to the building structure of a kind of building field of building field, more specifically be meant the flat girder construction of a kind of arrangement of reinforcement light weight aggregate concrete.
Background technology
Along with the development of China's highrise building, present increasing building receives the restriction of urban planning limit for height, and floor height is lower, and the post net is bigger, should guarantee the requirement of architecture indoor clear height, guarantees that again structure has suitable rigidity and ductility.In this case, adopt conventional beam and slab structure can not meet the demands, adopting flat girder construction is one of effective ways that solve this type of problem.
For many years; Experts and scholars have carried out many-sided research to flat girder construction system both at home and abroad; For example flat beam receiving under load action curved and cut performance, floor to bean column node favourable influence, the force mechanism of core space outside flat beam and the post intranodal, and the stress performance of flat beam and column and shock-resistance features etc.Because some mechanical characteristics and the advantage of flat girder construction; In structure design, be easier to realize the seismic design theory of " strong column and weak beam; strong shear capacity and weak bending capacity; the weak member of strong node ", add the restriction of present country to depth of building, therefore flat in recent years beam obtains to use widely in building structure as a kind of new structural system.
Have many theoretical research result and abundant practical applications experience of light weight aggregate concrete both at home and abroad, and obtained remarkable environmental benefit, economic benefit and social benefit.Light weight aggregate concrete has many advantages and special function; Like the light weight of light weight aggregate concrete, environmental protection, energy-conservation etc., though unit price is higher, it has alleviated structural weight per square meter; Reduce the arrangement of reinforcement on beam, post, basis; Improve the anti-seismic performance of building, under the appropriate design situation, can obtain overall economic efficiency preferably.The production of haydite can utilize natural discarded object again in the lightweight aggregate; Promote the resource circulation utilization; As the raw material of producing haydite can be the mud in shale, industrial waste, fuel waste residue and the rivers and lakes etc.; Human exhaustive exploitation and utilization to natural resource very extensively effectively slowed down in the source.
In the at present relevant patent of flat beam; CN 201292607Y Liu Qiu gives birth to a kind of application wide-flat beam structure utility model patent under construction that waits the people to provide; This patent has been introduced the structural form and the arrangement of reinforcement of wide-flat beam structure; Comprise crossing vertical and horizontal wide-flat beam, arrangement of reinforcement has comprised vertical muscle, stirrup and waist muscle, but this flat girder construction is not processed with light weight aggregate concrete; The old magnitude people of CN 101100881A has invented a kind of local type steel concrete multi-ribbed flat beam building cover; Superstructure in this patent comprises floor, Vierendeel girder and close girt strip; Wherein Vierendeel girder and close girt strip are wide-flat beam; And at least one local type steel is set vertically, but this flat beam building cover neither be processed at least one Vierendeel girder with light weight aggregate concrete; All the other patents all have the advantage of oneself, but all light weight aggregate concrete and flat beam are not combined to be applied in the building.
At present in the patent about light weight aggregate concrete; CN 101078283A Li Guochang has introduced a kind of anticorrosive, fatigue proof light aggregate concrete beam; This beam constitutes by fiber reinforced plastic rod, reinforcing bar with the light weight aggregate concrete layer that fiber reinforced plastic rod wraps up; Though comprise light weight aggregate concrete in forming, not flat girder construction; CN 201050127Y ten thousand states very wait the people to propose a kind of cast-in-place steel bar concrete with light aggregate composite floor plate, and this floor comprises the floor body of being made up of steel bar concrete with light aggregate prefabricated molds mould component, steel fabric sheet and cast-in-place light aggregate concrete, but its beam is not flat beam; With above-mentioned two patents similarly, all the other adopt the patent of light weight aggregate concrete floors all not adopt flat girder construction.
Patent of the present invention is compared with the existing patent that relates to light weight aggregate concrete or flat girder construction; Its distinguishing feature is that light weight aggregate concrete and flat girder construction are combined to be applied in the building; Give full play to the advantage and the function of light weight aggregate concrete and flat girder construction, can reduce building floor height or height overall significantly, reduce structural weight per square meter; Improve the shock resistance of building, its economic benefit, social benefit and environmental benefit are very significantly.
Summary of the invention
The object of the invention is to provide a kind of arrangement of reinforcement light weight aggregate concrete flat girder construction; The flat girder construction of this arrangement of reinforcement light weight aggregate concrete has combined the advantage and the mechanical characteristic of light weight aggregate concrete and flat beam; When guaranteeing bearing capacity, reduce the deadweight of whole building structure greatly; Both satisfy the requirement of architecture indoor clear height, also improved the anti-seismic performance of structure, had remarkable economical and social benefit.
The flat girder construction of arrangement of reinforcement light weight aggregate concrete of the present invention comprises post, Liang Heban, it is characterized in that: the flat beam of said beam for adopting reinforcing bar and light weight aggregate concrete to process, and the beam width of said flat beam is more than or equal to depth of beam; Said post is an arrangement of reinforcement light weight aggregate concrete post.
Described light weight aggregate concrete is done apparent density and is lower than 1950kg/m 3Each amounts of components of every cubic metre of material of described light weight aggregate concrete is: cement: sand: lightweight aggregate: flyash: silicon ash: water: high efficiency water reducing agent=400~500kg:600~800kg:400~800kg:0~200kg:0~60kg:100~200kg:0~15kg; Described lightweight aggregate comprises haydite, scoria (float stone), gangue etc., and wherein haydite can adopt one or more in haydites of book structure, lytag and the leca.
The flat girder construction of arrangement of reinforcement light weight aggregate concrete of the present invention is a kind of structural system between mushroom construction and frame beam structure, has some special mechanical properties and functional performance:
1. flat depth-span ratio of beam should not can reduce building cover structure floor height and building height overall effectively less than 1/20, reduces the adverse effect that wind load and geological process produce structural internal force, can also reduce the material cost of structure vertical member simultaneously, practices thrift cost.
2. flat beam is structurally mostly to be bidirectional arrangements, can improve the anti-impact of flat beam-post node effectively and cut ability, can also effectively solve the overstocked problem of node area reinforcing bar.Dull and stereotyped clear span in the flat beam that width is bigger can also reduce, flat board is stressed in so just reducing, and thickness of slab and quantity of reinforcement can be reduced.
3. flat girder construction can be brought good effect to architectural space, and with respect to normal reinforced concrete beam, flat beam helps the arrangement and the layout of the interior space because deck-molding is lower, makes architectural space spacious and comfortful, elegant in appearance.
The flat girder construction of arrangement of reinforcement lightweight aggregate steel concrete of the present invention has following advantage with respect to the flat girder construction of ordinary reinforced concrete:
1. lightweight: the dried apparent density of light weight aggregate concrete is lighter by 20%~40% than ordinary concrete, and intensity can reach ordinary concrete strength grade commonly used.
2. anti-seismic performance is good: light weight aggregate concrete is because little, the light weight of density, modulus of elasticity are low; Can reduce the gross weight of building; Seismic load is to be directly proportional with the gross weight of building; So the seismic forces that the flat girder construction of arrangement of reinforcement lightweight aggregate steel concrete is born under seismic loading is little, anti seismic efficiency is obvious.
3. energy-conserving and environment-protective: the raw materials for production of haydite both can be from solid waste in shale, the commercial production and building waste in the lightweight aggregate; Also can adopt the mud on river, the canal pool, the dried row of steam power station or wet-discharged coal ash also can become the raw material of haydite in addition.So the raw material source that is used for producing haydite very extensively, can reduce exhaustive exploitation and utilization to natural resource; The coefficient of thermal conductivity of haydite concrete is significantly less than ordinary concrete in addition, can effectively reduce building energy consumption, therefore has tangible society and environmental benefit.
4. though the price of light weight aggregate concrete is higher than the price of the ordinary concrete of ad eundem; But light weight aggregate concrete can significantly reduce the dead load of building; Make the also corresponding minimizing of load that passes to beam, post, basis, so beam, post, basic sectional dimension and quantity of reinforcement can reduce; The minimizing of dead load makes the vertical applied force member section reduce, and this increases usable floor area, can reduce by 5~10% construction costs, has very significant overall economic efficiency.
Description of drawings
Fig. 1 is the floor map for the flat girder construction of arrangement of reinforcement light weight aggregate concrete of the present invention.
Fig. 2 is a-a cross section enlarged diagram (flat beam width is less than the post width).
Fig. 3 is b-b cross section enlarged diagram (flat beam width equals the post width).
Fig. 4 is c-c cross section enlarged diagram (flat beam width is greater than the post width).
Among the figure: 1 pillar, 2 flat beams, 3 flat beams, 4 flat beams.
The specific embodiment
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs., elaborates.
The flat girder construction of arrangement of reinforcement light weight aggregate concrete of the present invention comprises pillar, Liang Heban, it is characterized in that: the flat beam of said beam for adopting reinforcing bar and light weight aggregate concrete to process, and the beam width of said flat beam is more than or equal to depth of beam; Said post is an arrangement of reinforcement light weight aggregate concrete post.
In the present embodiment, the dried apparent density of described light weight aggregate concrete is lower than 1950kg/m 3Each amounts of components of every cubic metre of material of described light weight aggregate concrete is: cement: sand: lightweight aggregate: flyash: silicon ash: water: high efficiency water reducing agent=425kg:650kg:550kg:80kg:35kg:160kg:7kg.Lightweight aggregate is a haydites of book structure, and it mainly acts on is the deadweight that alleviates flat girder construction, and has the remarkable environmental benefit.The intensity of lightweight aggregate is lower than stone, therefore adds the intensity that the silicon ash can improve light weight aggregate concrete, and this is because silicon ash particle diameter is 100~200nm; Dioxide-containing silica is more than 98%; Active strong, be easy to and hydrated cementitious product calcium hydroxide reaction, generate the C-S-H gel; The hole that fill concrete is inner, thus the durability and the intensity of light weight aggregate concrete improved.
The flat girder construction of this arrangement of reinforcement light weight aggregate concrete is as shown in Figure 1, entity 1 expression pillar among the figure, and entity 2, entity 3 and the flat beam of entity 4 expressions, beam width and post width relation have three kinds of situation, see Fig. 1, Fig. 2 and Fig. 3 respectively.Beam width is less than the post width among Fig. 1; Beam width equals the post width among Fig. 2; Fig. 3 central sill degree is wider than the post width.The flat beam deck-siding that Fig. 1 makes a circle at home and abroad should not produce bigger moment of torsion in order to avoid surpass vertical muscle flat beam to other direction under horizontal loads of column section scope in the flat beam width in limit greater than the sectional dimension of the flat beam width direction post of supporting.Though flat depth of beam reduces to cause its bearing capacity to reduce, behind the employing light weight aggregate concrete, its dead load reduces, and anti-seismic performance improves, so also reduced the power that is assigned on the flat beam.
When the present invention specifically constructed, its operation and frame-generic construction were as good as.When flat beam width was wide greater than post, flat in length and breadth beam can cross on post and form the node area of an expansion, and flat beam, post intersection area are kernel core district, and flat beam, flat beam intersection area are outer core core district, the stressed complicacy in support node district this moment.The flat beam steel anchoring of node area not only will be carried out according to the regulation of relevant Vierendeel girder among " Code for design of concrete structures " GB 50010-2010 with overlap joint, is also noted that in flat beam width to surpass the vertical muscle in position of post width and the layout of stirrup.To pay special attention to avoid problems such as the node area reinforcing bar is too intensive, concrete is difficult to perfusion and vibrate during construction.
The present invention does not limit to above-mentioned preferred forms, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.

Claims (3)

1. the flat girder construction of arrangement of reinforcement light weight aggregate concrete comprises post, Liang Heban, it is characterized in that: the flat beam of said beam for adopting reinforcing bar and light weight aggregate concrete to process, and the beam width of said flat beam is more than or equal to depth of beam; Said post is an arrangement of reinforcement light weight aggregate concrete post.
2. the flat girder construction of arrangement of reinforcement light weight aggregate concrete according to claim 1 is characterized in that: the dried apparent density of said light weight aggregate concrete is lower than 1950kg/m 3, each amounts of components is in every cubic metre of light weight aggregate concrete: cement: sand: lightweight aggregate: flyash: silicon ash: water: high efficiency water reducing agent=400~500kg:600~800kg:400~800kg:0~200kg:0~60kg:100~200kg:0~15kg.
3. the flat girder construction of arrangement of reinforcement light weight aggregate concrete according to claim 2, it is characterized in that: described lightweight aggregate mainly comprises haydite, scoria and gangue, wherein haydite adopts one or more in haydites of book structure, lytag and the leca.
CN2011104382849A 2011-12-24 2011-12-24 Reinforcement lightweight aggregate concrete flat beam structure Pending CN102425231A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103556783A (en) * 2013-10-24 2014-02-05 福州大学 Lightweight aggregate concrete column with steel-armored corners and fabrication technology thereof
CN103936346A (en) * 2014-03-18 2014-07-23 河南理工大学 Shale ceramsite pervious ecological concrete
CN104264881A (en) * 2014-09-16 2015-01-07 福州大学 Magnesium cement lightweight aggregate concrete hollow box board

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002161580A (en) * 2001-11-16 2002-06-04 Mitsui Constr Co Ltd Multiple dwelling house structure
CN101078283A (en) * 2007-07-06 2007-11-28 沈阳建筑大学 Corrosion fatigue resistant light aggregate concrete beam
CN201292607Y (en) * 2008-11-19 2009-08-19 江苏省江建集团有限公司 Wide flat beam structure applied in under construction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002161580A (en) * 2001-11-16 2002-06-04 Mitsui Constr Co Ltd Multiple dwelling house structure
CN101078283A (en) * 2007-07-06 2007-11-28 沈阳建筑大学 Corrosion fatigue resistant light aggregate concrete beam
CN201292607Y (en) * 2008-11-19 2009-08-19 江苏省江建集团有限公司 Wide flat beam structure applied in under construction

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
中华人民共和国建设部: "《轻骨料混凝土技术规程》", 31 December 2002, 中国建筑工业出版社 *
曹明琦: "高层建筑设计中几个问题的探讨", 《株洲工学院学报》 *
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103556783A (en) * 2013-10-24 2014-02-05 福州大学 Lightweight aggregate concrete column with steel-armored corners and fabrication technology thereof
CN103936346A (en) * 2014-03-18 2014-07-23 河南理工大学 Shale ceramsite pervious ecological concrete
CN103936346B (en) * 2014-03-18 2017-12-12 河南理工大学 A kind of haydites of book structure pervious ecological concrete
CN104264881A (en) * 2014-09-16 2015-01-07 福州大学 Magnesium cement lightweight aggregate concrete hollow box board

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Application publication date: 20120425