CN104775620A - Different-strength-level concrete classification replacement whole-set rapid construction method for high-rise frame joints - Google Patents
Different-strength-level concrete classification replacement whole-set rapid construction method for high-rise frame joints Download PDFInfo
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- CN104775620A CN104775620A CN201510088624.8A CN201510088624A CN104775620A CN 104775620 A CN104775620 A CN 104775620A CN 201510088624 A CN201510088624 A CN 201510088624A CN 104775620 A CN104775620 A CN 104775620A
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Abstract
The invention discloses a different-strength-level concrete classification replacement whole-set construction method for high-rise frame joints. The method comprises construction of a core zone reinforcement stirrup cage, transportation of concrete, pumping of the concrete, pouring and tamping of the concrete, maintenance of the concrete, joint reinforcing steel bar structural measures and the like. Reinforcement stirrups of a non-corner joint zone portion are made into the reinforcement stirrup cage, and then high-strength-level concrete of a lower layer column only needs to be casted on a beam bottom of the lower layer column; low-strength-level concrete of a floor beam plate is adopted in a beam plate and a non-corner joint zone to be casted uniformly, and a beam column corner joint zone is directly casted according to the column concrete strength level; and the construction problems of improper beam column separation face construction, simultaneous casting of different-strength-level concrete and the like are solved. Compared with a traditional construction method, the construction method is rapid, the quality is ensured, and operation is easy.
Description
The application is the divisional application of application number " 201310362276.X ", the applying date: 2013.8.20, title " high-rise frame node different intensity grades concrete sort permutation complete construction method ".
Technical field
The present invention relates to a kind of high-rise frame node different intensity grades concrete sort permutation complete construction method.
Background technology
In high-storey building frame structure, for meeting the ratio of axial compressive force to axial compressive ultimate capacity of section requirement of post, control column section to increase house usage space simultaneously as far as possible.Post design adopts higher-strength grade concrete to become a kind of inevitable choice, and for by curved be for main floor beam slab, select the concrete of higher-strength grade to be not need and unfavorable.
" technical specification for concrete structures of high-rise building " does not make clear and definite regulation to the concrete design and construction in beam column node area, and the domestic research to node area stress performance neither be very comprehensive; Traditional method Nodes reinforcing bar is crisscross, and beam-ends styletable and node area reinforcing bar all need encryption, be not only difficult to constructing operation, and concrete strength also can not get good guarantee, there is very large hidden danger of quality.
Traditional method is adopting 45 apart from styletable 1 times of deck-molding place
ofast-easy closing-up net is separated, and then node area is poured into a mould together with post concrete, before post concrete initial set, pour into a mould beam slab concrete again.This method Problems existing has: 1. 45
ofaying surface is difficult to realize, and 2. have passed through the initial setting time at the front pillar concrete of cast beam slab concrete.And once this separate faying surface do bad, be then easy in beam-ends generation shear failure.And in the design and construction of Concrete Structures of Tall Building, this problem can not be avoided again.Therefore, be necessary further to study the different node supporting capacity of slab column concrete strength, deformability, energy dissipation capacity.
Summary of the invention
The object of the present invention is to provide a kind of easy construction, the high-rise frame node different intensity grades concrete sort permutation complete construction method of favorable working performance.
Technical solution of the present invention is:
A kind of high-rise frame node different intensity grades concrete sort permutation complete construction method, is characterized in that: comprise the following steps:
(1) construction of He Xin district hoop reinforcement cage:
(A) hoop reinforcement cage made by node area stirrup, post indulged muscle and holds together in cage; The specific practice of hoop reinforcement cage is:
1) by the stirrup specification machine-shaping of requirement in structure chart;
2) reinforcing bar of φ 12 is placed in the middle part of every limit of stirrup periphery as additional vertical muscle;
3) stirrup and additional vertical muscle point are welded into hoop reinforcement cage by stirrup spacing on request;
4) node hoop reinforcement cage height is as the criterion with the deck-molding that each Nodes is maximum;
(B) on beam position, several short round steel are arranged, as the skeleton of brace summer reinforcing bar; Beam lower rebar is inserted in respectively the beam hoop of designing requirement, carries out the setting of beam lower rebar from Beam Elevation from low to high, reinforcing bar at the bottom of beam is stretched into the hoop reinforcement cage place corresponding with its elevation position;
(C) beam longitudinal structure muscle stretches into the hoop reinforcement cage corresponding with its position;
(D) penetrate back from low to high according to back elevation and indulge muscle, and ensure that the top of girder is indulged muscle and indulged above muscle at secondary beam top, then vertical muscle is stretched in node area hoop reinforcement cage;
(E) by the beam stirrup spacing of designing requirement, beam stirrup is evenly spread out, and colligation becomes beam reinforcement cages; If beam has longitudinal structure reinforcing bar and S shape contact stirrup also colligation to beam hoop to be caught on respectively the perpendicular limb of beam hoop;
(F), after having checked the bar gauge of beam, lay down the short round steel of brace summer muscle, beam muscle is sunk in mould together with node hoop reinforcement cage;
(G) with galvanized wire, hoop reinforcement cage and post are indulged muscle colligation;
(2) concrete transport: according to transportation route mileage, determines the quantity of concrete mixing and transporting car; Concrete mixing and transporting car ensures good working order;
(3) concrete pumping
(1) on-the-spot by constructure scheme requirement stringing, check in pipe whether have concrete residue before stringing, for the pressure loss pipeline reducing pumping is fixing firm, especially inclined tube and vertical tube;
(2) first soak pipeline with clear water before pumping, then use cement mortar lubrication piping and pump machine;
(3) amount of concrete of hopper keeps being not less than 20cm suitable for reading, in order to avoid pump machine inhalation rate is low or block because sucking air;
(4) lay bamboo slab rubber passage at pump line erection position, prevention connects concrete when tearing pump line open and is scattered to cause and pollutes reinforcing bar; When rotating material distributing machine, wrap discharge end with woven bag, in order to avoid pollute the beam reinforced steel bar of not building in material distributing machine rotating range;
(4) concrete watering is smash
(1) first build vertical wall, post, then build horizontal beam, plate, beam-column joint core, when having high-low bay, first build low across position concrete, build high across position concrete before its initial set.When low have wall, a post high-strength grade concrete across position time, should first build to low across plate top bit;
(2) adopt Φ 50 to lengthen poker vibrator to vibrate beam column concrete, take Φ 30 to lengthen poker vibrator for node area and vibrate;
(3), vibrator should insert soon and pull out slowly, and a time of staying of often vibrating needs 20 ~ 30 seconds, and spacing of vibrating is not more than 50 ㎝, and it is dark that vibrating spear should insert lower one deck 50 ㎝;
(4) construction area division principle: finally build the time difference with the concrete of the high and low grade of building in region and be no more than time of setting and deduct 2h and be advisable; During construction, for guaranteeing that raft quality is sewed up in concrete construction, adopt tower crane motor-driven carry out constructing sew up building of raft, to control the unstability of concrete initial set time;
(5), when watering walling, post concrete, placement layer by layer vibrates; Before concrete initial set, build beam slab thereupon; To wall beam, core space, varying strength concrete intersection that node of column and beam reinforcing bar is intensive when building, strengthen vibrating, stop leakage to shake phenomenon, guarantee the concrete density of beam-column joint core and design strength;
(5) concrete maintenance
(1), after concreting, surface maintenance takes covered with plastic film to add a cover straw bag watering maintenance, prevents inside concrete moisture from evaporating, and keeps concrete surface moistening;
(2) quadric-plastering should be strengthened for after final set before floorslab concrete initial set, confining surface shrinkage crack; The final set rear surface reinforcement covering curing phase is no less than 14 days;
(3) for R.C. wall board, just to wet straw screen or mat or straw bag in the outer side mounting of template before concreting, prevent moisture from distributing, guarantee that template does not absorb water simultaneously, not spillage; After concrete final set, except the straw screen or mat humidity of maintenance both sides, should constantly from end face water seasoning, curing age is no less than 14 days, and form removable is no earlier than 5 days;
(6) joint reinforcing bar construction measure
(1) suppose that X-direction is main frame, in node area, the upper and lower reinforcing bar of the beam of Y-direction, must pass below the upper reinforcement of the beam of X-direction with above lower rebar;
(2) reinforcing bar of beam puts in beam column node area, avoids vertical reinforcement and the stirrup of post;
(3) reinforcing bar must meet code requirement in the anchorage length of node area.
The stirrup of non-corner node district part is first made hoop reinforcement cage by the present invention, then the high strength concrete of lower floor's post only need water at the bottom of this layer of beam, the beam slab of this layer and non-corner node district all adopt the unification of the comparatively lower intensity level concrete of floor beam slab to build, beam column corner node district directly builds according to post strength grade of concrete, avoids occurring beam column division surface construction wrong and different strength concrete and the construction problem such as to build simultaneously.This construction method is more quick than traditional construction method, it is easy to operate to ensure the quality of products.
Below in conjunction with embodiment, the invention will be further described.
Detailed description of the invention
A kind of high-rise frame node different intensity grades concrete sort permutation complete construction method, comprises the following steps:
(1) construction of He Xin district hoop reinforcement cage:
(A) hoop reinforcement cage made by node area stirrup, post indulged muscle and holds together in cage; The specific practice of hoop reinforcement cage is:
1) by the stirrup specification machine-shaping of requirement in structure chart;
2) reinforcing bar of φ 12 is placed in the middle part of every limit of stirrup periphery as additional vertical muscle;
3) stirrup and additional vertical muscle point are welded into hoop reinforcement cage by stirrup spacing on request;
4) node hoop reinforcement cage height is as the criterion with the deck-molding that each Nodes is maximum;
(B) on beam position, several short round steel are arranged, as the skeleton of brace summer reinforcing bar; Beam lower rebar is inserted in respectively the beam hoop of designing requirement, carries out the setting of beam lower rebar from Beam Elevation from low to high, reinforcing bar at the bottom of beam is stretched into the hoop reinforcement cage place corresponding with its elevation position;
(C) beam longitudinal structure muscle stretches into the hoop reinforcement cage corresponding with its position;
(D) penetrate back from low to high according to back elevation and indulge muscle, and ensure that the top of girder is indulged muscle and indulged above muscle at secondary beam top, then vertical muscle is stretched in node area hoop reinforcement cage;
(E) by the beam stirrup spacing of designing requirement, beam stirrup is evenly spread out, and colligation becomes beam reinforcement cages; If beam has longitudinal structure reinforcing bar and S shape contact stirrup also colligation to beam hoop to be caught on respectively the perpendicular limb of beam hoop;
(F), after having checked the bar gauge of beam, lay down the short round steel of brace summer muscle, beam muscle is sunk in mould together with node hoop reinforcement cage;
(G) with galvanized wire, hoop reinforcement cage and post are indulged muscle colligation;
(2) concrete transport: according to transportation route mileage, determines the quantity of concrete mixing and transporting car; Concrete mixing and transporting car ensures good working order;
(3) concrete pumping
(1) on-the-spot by constructure scheme requirement stringing, check in pipe whether have concrete residue before stringing, for the pressure loss pipeline reducing pumping is fixing firm, especially inclined tube and vertical tube;
(2) first soak pipeline with clear water before pumping, then use cement mortar lubrication piping and pump machine;
(3) amount of concrete of hopper keeps being not less than 20cm suitable for reading, in order to avoid pump machine inhalation rate is low or block because sucking air;
(4) lay bamboo slab rubber passage at pump line erection position, prevention connects concrete when tearing pump line open and is scattered to cause and pollutes reinforcing bar; When rotating material distributing machine, wrap discharge end with woven bag, in order to avoid pollute the beam reinforced steel bar of not building in material distributing machine rotating range;
(4) concrete watering is smash
(1) first build vertical wall, post, then build horizontal beam, plate, beam-column joint core, when having high-low bay, first build low across position concrete, build high across position concrete before its initial set.When low have wall, a post high-strength grade concrete across position time, should first build to low across plate top bit;
(2) adopt Φ 50 to lengthen poker vibrator to vibrate beam column concrete, take Φ 30 to lengthen poker vibrator for node area and vibrate;
(3), vibrator should insert soon and pull out slowly, and a time of staying of often vibrating needs 20 ~ 30 seconds, and spacing of vibrating is not more than 50 ㎝, and it is dark that vibrating spear should insert lower one deck 50 ㎝;
(4) construction area division principle: finally build the time difference with the concrete of the high and low grade of building in region and be no more than time of setting and deduct 2h and be advisable; During construction, for guaranteeing that raft quality is sewed up in concrete construction, adopt tower crane motor-driven carry out constructing sew up building of raft, to control the unstability of concrete initial set time;
(5), when watering walling, post concrete, placement layer by layer vibrates; Before concrete initial set, build beam slab thereupon; To wall beam, core space, varying strength concrete intersection that node of column and beam reinforcing bar is intensive when building, strengthen vibrating, stop leakage to shake phenomenon, guarantee the concrete density of beam-column joint core and design strength;
(5) concrete maintenance
(1), after concreting, surface maintenance takes covered with plastic film to add a cover straw bag watering maintenance, prevents inside concrete moisture from evaporating, and keeps concrete surface moistening;
(2) quadric-plastering should be strengthened for after final set before floorslab concrete initial set, confining surface shrinkage crack; The final set rear surface reinforcement covering curing phase is no less than 14 days;
(3) for R.C. wall board, just to wet straw screen or mat or straw bag in the outer side mounting of template before concreting, prevent moisture from distributing, guarantee that template does not absorb water simultaneously, not spillage; After concrete final set, except the straw screen or mat humidity of maintenance both sides, should constantly from end face water seasoning, curing age is no less than 14 days, and form removable is no earlier than 5 days;
(6) joint reinforcing bar construction measure
(1) suppose that X-direction is main frame, in node area, the upper and lower reinforcing bar of the beam of Y-direction, must pass below the upper reinforcement of the beam of X-direction with above lower rebar;
(2) reinforcing bar of beam puts in beam column node area, avoids vertical reinforcement and the stirrup of post;
(3) reinforcing bar must meet code requirement in the anchorage length of node area.
Claims (1)
1. the complete fast construction method of high-rise frame node different intensity grades concrete sort permutation, is characterized in that: comprise the following steps:
(1) construction of He Xin district hoop reinforcement cage:
(A) hoop reinforcement cage made by node area stirrup, post indulged muscle and holds together in cage; The specific practice of hoop reinforcement cage is:
1) by the stirrup specification machine-shaping of requirement in structure chart;
2) reinforcing bar of φ 12 is placed in the middle part of every limit of stirrup periphery as additional vertical muscle;
3) stirrup and additional vertical muscle point are welded into hoop reinforcement cage by stirrup spacing on request;
4) node hoop reinforcement cage height is as the criterion with the deck-molding that each Nodes is maximum;
(B) on beam position, several short round steel are arranged, as the skeleton of brace summer reinforcing bar; Beam lower rebar is inserted in respectively the beam hoop of designing requirement, carries out the setting of beam lower rebar from Beam Elevation from low to high, reinforcing bar at the bottom of beam is stretched into the hoop reinforcement cage place corresponding with its elevation position;
(C) beam longitudinal structure muscle stretches into the hoop reinforcement cage corresponding with its position;
(D) penetrate back from low to high according to back elevation and indulge muscle, and ensure that the top of girder is indulged muscle and indulged above muscle at secondary beam top, then vertical muscle is stretched in node area hoop reinforcement cage;
(E) by the beam stirrup spacing of designing requirement, beam stirrup is evenly spread out, and colligation becomes beam reinforcement cages; If beam has longitudinal structure reinforcing bar and S shape contact stirrup also colligation to beam hoop to be caught on respectively the perpendicular limb of beam hoop;
(F), after having checked the bar gauge of beam, lay down the short round steel of brace summer muscle, beam muscle is sunk in mould together with node hoop reinforcement cage;
(G) with galvanized wire, hoop reinforcement cage and post are indulged muscle colligation;
(2) concrete transport: according to transportation route mileage, determines the quantity of concrete mixing and transporting car; Concrete mixing and transporting car ensures good working order;
(3) concrete pumping
(1) on-the-spot by constructure scheme requirement stringing, check in pipe whether have concrete residue before stringing, for the pressure loss pipeline inclined tube reducing pumping is fixing firm;
(2) first soak pipeline with clear water before pumping, then use cement mortar lubrication piping and pump machine;
(3) amount of concrete of hopper keeps being not less than 20cm suitable for reading, in order to avoid pump machine inhalation rate is low or block because sucking air;
(4) lay bamboo slab rubber passage at pump line erection position, prevention connects concrete when tearing pump line open and is scattered to cause and pollutes reinforcing bar; When rotating material distributing machine, wrap discharge end with woven bag, in order to avoid pollute the beam reinforced steel bar of not building in material distributing machine rotating range;
(4) concrete watering is smash
(1) first build vertical wall, post, then build horizontal beam, plate, beam-column joint core, when having high-low bay, first build low across position concrete, build high across position concrete before its initial set.When low have wall, a post high-strength grade concrete across position time, should first build to low across plate top bit;
(2) adopt Φ 50 to lengthen poker vibrator to vibrate beam column concrete, take Φ 30 to lengthen poker vibrator for node area and vibrate;
(3) vibrator should be inserted soon and pull out slowly, and a time of staying of often vibrating needs 30 seconds, and spacing of vibrating is not more than 50 ㎝, and it is dark that vibrating spear should insert lower one deck 50 ㎝;
(4) construction area division principle: finally build the time difference with the concrete of the high and low grade of building in region and be no more than time of setting and deduct 2h and be advisable; During construction, for guaranteeing that raft quality is sewed up in concrete construction, adopt tower crane motor-driven carry out constructing sew up building of raft, to control the unstability of concrete initial set time;
(5), when watering walling, post concrete, placement layer by layer vibrates; Before concrete initial set, build beam slab thereupon; To wall beam, core space, varying strength concrete intersection that node of column and beam reinforcing bar is intensive when building, strengthen vibrating, stop leakage to shake phenomenon, guarantee the concrete density of beam-column joint core and design strength;
(5) concrete maintenance
(1), after concreting, surface maintenance takes covered with plastic film to add a cover straw bag watering maintenance, prevents inside concrete moisture from evaporating, and keeps concrete surface moistening;
(2) quadric-plastering should be strengthened for after final set before floorslab concrete initial set, confining surface shrinkage crack; The final set rear surface reinforcement covering curing phase is no less than 14 days;
(3) for R.C. wall board, just to wet straw screen or mat or straw bag in the outer side mounting of template before concreting, prevent moisture from distributing, guarantee that template does not absorb water simultaneously, not spillage; After concrete final set, except the straw screen or mat humidity of maintenance both sides, should constantly from end face water seasoning, curing age is no less than 14 days, and form removable is no earlier than 5 days;
(6) joint reinforcing bar construction measure
(1) suppose that X-direction is main frame, in node area, the upper and lower reinforcing bar of the beam of Y-direction, must pass below the upper reinforcement of the beam of X-direction with above lower rebar;
(2) reinforcing bar of beam puts in beam column node area, avoids vertical reinforcement and the stirrup of post;
(3) reinforcing bar must meet code requirement in the anchorage length of node area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510088624.8A CN104775620B (en) | 2013-08-20 | 2013-08-20 | The complete fast construction method of high-rise frame node different intensity grades concrete sort permutation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362276.XA CN103410319B (en) | 2013-08-20 | 2013-08-20 | Complete construction method for sorting and replacing concretes of different strength grades of high-rise frame joints |
| CN201510088624.8A CN104775620B (en) | 2013-08-20 | 2013-08-20 | The complete fast construction method of high-rise frame node different intensity grades concrete sort permutation |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310362276.XA Division CN103410319B (en) | 2013-08-20 | 2013-08-20 | Complete construction method for sorting and replacing concretes of different strength grades of high-rise frame joints |
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| Publication Number | Publication Date |
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| CN104775620A true CN104775620A (en) | 2015-07-15 |
| CN104775620B CN104775620B (en) | 2017-03-01 |
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| CN201310362276.XA Expired - Fee Related CN103410319B (en) | 2013-08-20 | 2013-08-20 | Complete construction method for sorting and replacing concretes of different strength grades of high-rise frame joints |
| CN201510088624.8A Expired - Fee Related CN104775620B (en) | 2013-08-20 | 2013-08-20 | The complete fast construction method of high-rise frame node different intensity grades concrete sort permutation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859352A (en) * | 2017-11-23 | 2018-03-30 | 中铁建设集团南方工程有限公司 | Consolidation process construction at skyscraper different strength concrete bean column node |
| CN108643577A (en) * | 2018-04-02 | 2018-10-12 | 李芳群 | 2 Anti-shock buildings of construction are bypassed the immediate leadership Anti-Typhoon easy shatter-proof 3 generation specific purpose tool and usage |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117166608B (en) * | 2023-09-05 | 2024-03-26 | 中铁建设集团华北工程有限公司 | Post grouting-based concrete beam column node strength construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017843A (en) * | 1998-06-29 | 2000-01-18 | Tokyu Constr Co Ltd | Anchoring method for main reinforcement in column-beam joint of structure and anchoring construction for main reinforcement in beam |
| US20050025581A1 (en) * | 2003-07-30 | 2005-02-03 | Peter Rogers | Shoring leg with node connectors |
| CN201351313Y (en) * | 2009-01-15 | 2009-11-25 | 西安建筑科技大学 | Concrete special-shaped column equipped with lattice type channel steel framework-reinforced concrete beam frame joint |
| CN102011434A (en) * | 2010-11-24 | 2011-04-13 | 沈阳建筑大学 | BRB (buckling restrained brace) concrete frame beam-column joint |
| CN102061770A (en) * | 2010-03-03 | 2011-05-18 | 柳忠林 | Construction method for imitated frame structure of long-span prestressed concrete beam slab |
| CN103104039A (en) * | 2013-03-08 | 2013-05-15 | 郑州大学 | Assembled framework beam-column joint adopting cover plate connection and construction method thereof |
-
2013
- 2013-08-20 CN CN201310362276.XA patent/CN103410319B/en not_active Expired - Fee Related
- 2013-08-20 CN CN201510088624.8A patent/CN104775620B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017843A (en) * | 1998-06-29 | 2000-01-18 | Tokyu Constr Co Ltd | Anchoring method for main reinforcement in column-beam joint of structure and anchoring construction for main reinforcement in beam |
| US20050025581A1 (en) * | 2003-07-30 | 2005-02-03 | Peter Rogers | Shoring leg with node connectors |
| CN201351313Y (en) * | 2009-01-15 | 2009-11-25 | 西安建筑科技大学 | Concrete special-shaped column equipped with lattice type channel steel framework-reinforced concrete beam frame joint |
| CN102061770A (en) * | 2010-03-03 | 2011-05-18 | 柳忠林 | Construction method for imitated frame structure of long-span prestressed concrete beam slab |
| CN102011434A (en) * | 2010-11-24 | 2011-04-13 | 沈阳建筑大学 | BRB (buckling restrained brace) concrete frame beam-column joint |
| CN103104039A (en) * | 2013-03-08 | 2013-05-15 | 郑州大学 | Assembled framework beam-column joint adopting cover plate connection and construction method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859352A (en) * | 2017-11-23 | 2018-03-30 | 中铁建设集团南方工程有限公司 | Consolidation process construction at skyscraper different strength concrete bean column node |
| CN108643577A (en) * | 2018-04-02 | 2018-10-12 | 李芳群 | 2 Anti-shock buildings of construction are bypassed the immediate leadership Anti-Typhoon easy shatter-proof 3 generation specific purpose tool and usage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103410319A (en) | 2013-11-27 |
| CN103410319B (en) | 2015-04-01 |
| CN104775620B (en) | 2017-03-01 |
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