CN101289879A - Concrete beam-column node construction method - Google Patents
Concrete beam-column node construction method Download PDFInfo
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- CN101289879A CN101289879A CNA200810024353XA CN200810024353A CN101289879A CN 101289879 A CN101289879 A CN 101289879A CN A200810024353X A CNA200810024353X A CN A200810024353XA CN 200810024353 A CN200810024353 A CN 200810024353A CN 101289879 A CN101289879 A CN 101289879A
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Abstract
A construction method of concrete beam-column nodes relates to the building engineering technical field. The method comprises the following steps of beam bottom formwork arrangement, beam reinforcing steel bar binding, in-beam dense-mesh steel mesh binding, beam side formwork and roof plate formwork arrangement, roof plate reinforcing steel bar binding, in-board dense-mesh steel mesh binding, beam-column node concreting, roof plate concreting and concrete curing. The construction method has simple operation and convenient construction; during concreting, a circumference-closed dense-mesh steel mesh prevents concrete from overflowing, thereby reducing the consumption of high-strength concrete; moreover, through controlling the casting and compacting time of concrete, the construction method can prevent an adjacent surface of high-strength and low-strength concrete from forming a cold joint, and also can prevent a beam-column node from forming a crack.
Description
Technical field
The present invention relates to construction engineering technical field.
Background technology
In reinforced concrete structure, the bean column node more complicated of high-storey building frame structure, because the result of load combination and inner forces calculation, requirement is higher than the strength grade of concrete of horizontal structure (beam, plate) with vertical structure (post, the wall) strength grade of concrete of one deck.Be the harmful effect that reduces because of strength grade of concrete difference bean column node to be produced, we should take suitable technical measures, guarantee the concrete density in bean column node place, design strength and presentation quality.
Summary of the invention
The object of the invention is to invent a kind of reducing and because of strength grade of concrete difference bean column node is produced dysgenic concrete beam-column node construction method.
The present invention includes following steps: the beam bottom board plate installs, dense mesh colligation, side template and roof plate template installs, dense mesh colligation, bean column node concreting in the top board reinforcing bar binding, plate, concrete roof is built and concrete curing in the beam steel colligation, beam.
The dense mesh colligation is a colligation dense mesh on beam steel in the beam of the present invention, with metal binding wire dense mesh is tied up on beam steel, and is made dense mesh inclined-plane at 45, can improve the firm reliability of colligation.
Colligation dense mesh of the present invention is 45 ° of inclined-planes, and is linked to be an integral body with dense mesh in the beam.In the concreting process, be linked to be whole dense mesh stop concrete to around excessive, can save the strong concrete consumption.
Bean column node concreting of the present invention is to adopt the concrete of tower crane suspension bucket transport column grade in place, and layering is vibrated; Before concrete initial set, the concrete of flooring beam slab is built in pumping immediately; Stay in capital beam bottom and to establish constuction joint,, avoid the concrete adjacent surface of height strength grade to form cold seam to dwindle the joint cores high strength grade casting and compacting of concrete time.
During bean column node concreting of the present invention the intensive core space of bean column node reinforcing bar is vibrated with small-sized poker vibrator, can stop the dead angle that Lou shakes.
The concrete that bean column node concreting of the present invention is the bean column node place waters together in company with beam slab and smashes.
In order to prevent that the crack from appearring in the bean column node place, the concrete at node of the present invention place waters high strength grade concrete earlier, after water lower intensity level concrete.
The concrete of beam slab of the present invention adopts the secondary vibration method, promptly vibrates once before concrete initial set again.
Water at beam slab face and plate underbeam side during concrete curing of the present invention.Can carry out water seasoning to beam with giant, and postpone the striking time of beam side.
The present invention is simple to operate, easy construction, in concreting process, the closed dense mesh in border stop concrete to around excessive, saved the strong concrete consumption.By controlling concrete watering the time of smashing, avoid the concrete adjacent surface of height strength grade to form cold seam, can prevent that also the crack from appearring in the bean column node place.The present invention is applicable in the monolithic reinforced concrete structure, the bean column node Concrete Construction that strength grade of concrete is different.
The specific embodiment
One, operating procedure:
The beam bottom board plate installs, dense mesh colligation, side template and roof plate template installs, dense mesh colligation, bean column node concreting in the top board reinforcing bar binding, plate, concrete roof is built and concrete curing in the beam steel colligation, beam.
Two, key points for operation:
1, after the beam steel colligation is finished, before side template installs, colligation dense mesh on beam steel.With metal binding wire dense mesh (bilayer) is tightly tied up on beam steel, made dense mesh inclined-plane at 45, colligation must be solid and reliable.
2, after the top board reinforcing bar binding was finished, the colligation dense mesh made dense mesh inclined-plane at 45, and was linked to be an integral body, the colligation firm and reliable connection with dense mesh in the beam.In the concreting process, be linked to be whole dense mesh stop concrete to around excessive, can save the strong concrete consumption.
3, confirm dense mesh colligation firmly after, can carry out that bean column node is concrete builds.According to the concrete situation of the most commodities in use of highrise building, the casting and compacting of concrete method of bean column node core space is: the concrete with tower crane suspension bucket (Dang Liang, plate, when the post disposable integral is cast-in-place, adopt concrete pump) transport column grade is in place, and layering is vibrated.Before concrete initial set, the concrete of flooring beam slab is built in pumping thereupon.Adopt this method to water when smashing story post, wall, beam, board concrete, answer the concrete adjacent surface of emphasis control height strength grade can not form cold seam, so should stay in capital beam bottom and establish constuction joint, to dwindle the joint cores high strength grade casting and compacting of concrete time, avoid the concrete adjacent surface of height strength grade to form cold seam.Simultaneously the intensive core space of bean column node reinforcing bar is strengthened vibrating with small-sized poker vibrator, stop Lou to shake the dead angle.
4, when the pillar strength grade of concrete is higher than the beam slab strength grade of concrete and is not more than secondary (10N/mm2), the concrete that can consider the bean column node place waters together in company with beam slab to be smash.At this moment,, can cause the bearing capacity deficiency of post under vertical uniform load q if the concrete strength at bean column node place is taken the concrete strength of beam slab, and the shear-carrying capacity deficiency of geological process lower node core space, so generally should not adopt.
5, prevent the measure in crack, bean column node place
5.1 the concrete of different intensity grades, its cement consumption, water/binder ratio, water supply volume are all different, the concrete contraction of height strength grade is variant, causes producing the crack easily.Require batching plant to adjust the match ratio design, under the condition that satisfies strength grade and pumpability, to the pillar concrete, reduce cement consumption, reduce sand factor, increase stone content, reduce the slump, reduce water supply volume, and also need do corresponding adjustment the consumption of flyash and Admixture.
5.2 the concrete at node place is carried out watering of " high earlier back being low " and is smash principle, promptly water high strength grade concrete earlier, after water lower intensity level concrete, continue to water the concrete of smashing beam slab before being strict controlled in the post concrete initial set, carry out in advance and confide a technological secret and preparation.
5.3 the concrete of beam slab adopts the secondary vibration method, promptly vibrates once before concrete initial set again, strengthens the density of high lower intensity level concrete interface, reduces and shrinks.
5.4 the side at beam increases the horizontal tectonics reinforcing bar, improves the crack resistance of beam.
5.5 the slump of strict control concrete mix, joint cores pillar position concrete adopt tower crane to carry, in the hope of reducing the slump.At the scene, all should carry out the slump to the per car concrete detects.
6, strengthen concrete maintenance, particularly beam, except the plate face waters, also should water, before full hall load-bearing scaffold is not removed, can carry out water seasoning to beam with giant, and postpone the striking time of beam side in plate underbeam side.
Three, plant
Tower crane, hopper, concrete pump, plug-in type vibrating head, flat-plate vibrator, spade, floating rule, wood float, plasterer's trowel etc.
Four, engineering example effect
Jiao Wan sub-district, Chongwen District, Beijing D district Gongjian engineering is high-rise commercial office complex, underground 3 layers 12539 square metres, and 10 layers 25875 square metres on the ground, overall floorage 38414m
2, frame-shear wall core barrel structure, 40 meters of building heights, 5,485 ten thousand yuan of total costs.This project frame column strength grade of concrete under ground portion is C60, and the 1-4 layer is C50, and the 5-10 layer is C40, and all beams, plate strength grade are C30, and post, beam slab strength grade of concrete differ greatly.This project bean column node is used this worker's method and is constructed, and has obviously saved the consumption of strong concrete, has improved project benefit; Effectively avoid the appearance in cold seam in bean column node place and crack, improved the structure construction quality.
Claims (9)
1, concrete beam-column node construction method is characterized in that may further comprise the steps: the beam bottom board plate installs, dense mesh colligation, side template and roof plate template installs, dense mesh colligation, bean column node concreting in the top board reinforcing bar binding, plate, concrete roof is built and concrete curing in the beam steel colligation, beam.
2, according to the described concrete beam-column node construction method of claim 1, it is characterized in that the dense mesh colligation is a colligation dense mesh on beam steel in the described beam, with metal binding wire dense mesh is tied up on beam steel, and made dense mesh inclined-plane at 45.
3,, it is characterized in that described colligation dense mesh is 45 ° of inclined-planes, and be linked to be an integral body with dense mesh in the beam according to the described concrete beam-column node construction method of claim 1.
4, according to the described concrete beam-column node construction method of claim 1, it is characterized in that described bean column node concreting is to adopt the concrete of tower crane suspension bucket transport column grade in place, layering is vibrated; Before concrete initial set, the concrete of flooring beam slab is built in pumping immediately; Stay in capital beam bottom and to establish constuction joint.
5,, when it is characterized in that described bean column node concreting the intensive core space of bean column node reinforcing bar is vibrated with small-sized poker vibrator according to the described concrete beam-column node construction method of claim 4.
6,, it is characterized in that concrete that described bean column node concreting is the bean column node place waters together in company with beam slab to smash according to the described concrete beam-column node construction method of claim 1.
7, according to the described concrete beam-column node construction method of claim 1, it is characterized in that the concrete at node place waters high strength grade concrete earlier, after water lower intensity level concrete.
8, according to the described concrete beam-column node construction method of claim 1, it is characterized in that the concrete of beam slab adopts the secondary vibration method, promptly before concrete initial set, vibrate once again.
9,, water at beam slab face and plate underbeam side when it is characterized in that concrete curing according to the described concrete beam-column node construction method of claim 1.
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| CNA200810024353XA CN101289879A (en) | 2008-06-02 | 2008-06-02 | Concrete beam-column node construction method |
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| CNA200810024353XA CN101289879A (en) | 2008-06-02 | 2008-06-02 | Concrete beam-column node construction method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296752A (en) * | 2011-06-09 | 2011-12-28 | 北京工业大学 | Galvanized welded steel wire mesh beam end structure and method for improving ductility of beam end bottom pressure zone |
| CN103174292A (en) * | 2013-03-07 | 2013-06-26 | 山西太行建设开发有限公司 | Pouring construction method of frame structure with concrete nodes of multiple mark numbers |
| CN103541437A (en) * | 2013-10-28 | 2014-01-29 | 北京工业大学 | Reinforced concrete frame node region reinforcing structure externally provided with steel plates and wrapped by steel wire mesh and manufacturing method thereof |
| CN103572968A (en) * | 2013-11-18 | 2014-02-12 | 济南四建（集团）有限责任公司 | Method for marking construction of newly-stirred pump-concrete with different strength grades |
| CN103790240A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Construction method for concrete of different strength grades and on beam-column joints of high-rise building |
| CN105951988A (en) * | 2016-07-20 | 2016-09-21 | 河北科工建筑工程集团有限公司 | Different-strength-grade concrete structure of beam-column joint and construction technology of concrete structure |
| CN107724680A (en) * | 2016-08-11 | 2018-02-23 | 五冶集团上海有限公司 | A kind of high-storey building frame structure beam-column node construction method |
| CN108130951A (en) * | 2017-11-21 | 2018-06-08 | 中国建筑第八工程局有限公司 | The concrete construction method of column beam slab node |
| CN108571068A (en) * | 2018-04-25 | 2018-09-25 | 青岛新华友建工集团股份有限公司 | The insertion of steel fabric sheet cross section carries out high-strength concrete pouring construction engineering method |
| CN109024886A (en) * | 2018-09-12 | 2018-12-18 | 中建四局第六建筑工程有限公司 | A kind of crossover node concrete structure and the high low grade control method of concrete |
| CN112696026A (en) * | 2020-11-30 | 2021-04-23 | 中国一冶集团有限公司 | Concrete pouring construction method for section steel concrete column beam node |
| CN113073727A (en) * | 2021-03-30 | 2021-07-06 | 苏州凌云建设有限公司 | Construction method of sewage structure |
| CN114108800A (en) * | 2021-12-09 | 2022-03-01 | 中国一冶集团有限公司 | Steel wire mesh framing cabin for cornice board concrete pouring and pouring construction method |
| CN115749282A (en) * | 2022-12-12 | 2023-03-07 | 广东建科建设咨询有限公司 | Quality control method for concrete with different marks at beam column joint part |
-
2008
- 2008-06-02 CN CNA200810024353XA patent/CN101289879A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296752A (en) * | 2011-06-09 | 2011-12-28 | 北京工业大学 | Galvanized welded steel wire mesh beam end structure and method for improving ductility of beam end bottom pressure zone |
| CN102296752B (en) * | 2011-06-09 | 2013-04-10 | 北京工业大学 | Galvanized welded steel wire mesh beam end structure and method for improving ductility of beam end bottom pressure zone |
| CN103174292A (en) * | 2013-03-07 | 2013-06-26 | 山西太行建设开发有限公司 | Pouring construction method of frame structure with concrete nodes of multiple mark numbers |
| CN103541437A (en) * | 2013-10-28 | 2014-01-29 | 北京工业大学 | Reinforced concrete frame node region reinforcing structure externally provided with steel plates and wrapped by steel wire mesh and manufacturing method thereof |
| CN103541437B (en) * | 2013-10-28 | 2015-10-28 | 北京工业大学 | Reinforced concrete frame node district additional steel plates and gauze wire cloth parcel strengthen structure and preparation method |
| CN103572968A (en) * | 2013-11-18 | 2014-02-12 | 济南四建（集团）有限责任公司 | Method for marking construction of newly-stirred pump-concrete with different strength grades |
| CN103572968B (en) * | 2013-11-18 | 2015-09-16 | 济南四建（集团）有限责任公司 | Newly mix the sign construction method of pumping of concrete different intensity grades |
| CN103790240A (en) * | 2014-01-17 | 2014-05-14 | 洛阳广鑫建设集团有限公司 | Construction method for concrete of different strength grades and on beam-column joints of high-rise building |
| CN105951988A (en) * | 2016-07-20 | 2016-09-21 | 河北科工建筑工程集团有限公司 | Different-strength-grade concrete structure of beam-column joint and construction technology of concrete structure |
| CN107724680A (en) * | 2016-08-11 | 2018-02-23 | 五冶集团上海有限公司 | A kind of high-storey building frame structure beam-column node construction method |
| CN108130951A (en) * | 2017-11-21 | 2018-06-08 | 中国建筑第八工程局有限公司 | The concrete construction method of column beam slab node |
| CN108571068A (en) * | 2018-04-25 | 2018-09-25 | 青岛新华友建工集团股份有限公司 | The insertion of steel fabric sheet cross section carries out high-strength concrete pouring construction engineering method |
| CN109024886A (en) * | 2018-09-12 | 2018-12-18 | 中建四局第六建筑工程有限公司 | A kind of crossover node concrete structure and the high low grade control method of concrete |
| CN112696026A (en) * | 2020-11-30 | 2021-04-23 | 中国一冶集团有限公司 | Concrete pouring construction method for section steel concrete column beam node |
| CN113073727A (en) * | 2021-03-30 | 2021-07-06 | 苏州凌云建设有限公司 | Construction method of sewage structure |
| CN114108800A (en) * | 2021-12-09 | 2022-03-01 | 中国一冶集团有限公司 | Steel wire mesh framing cabin for cornice board concrete pouring and pouring construction method |
| CN115749282A (en) * | 2022-12-12 | 2023-03-07 | 广东建科建设咨询有限公司 | Quality control method for concrete with different marks at beam column joint part |
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Open date: 20081022 |