CN103088915A - Cast-in-site column with column cap and construction method - Google Patents

Cast-in-site column with column cap and construction method Download PDF

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Publication number
CN103088915A
CN103088915A CN2012102912417A CN201210291241A CN103088915A CN 103088915 A CN103088915 A CN 103088915A CN 2012102912417 A CN2012102912417 A CN 2012102912417A CN 201210291241 A CN201210291241 A CN 201210291241A CN 103088915 A CN103088915 A CN 103088915A
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China
Prior art keywords
cap
concrete
post
cast
column
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CN2012102912417A
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Chinese (zh)
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CN103088915B (en
Inventor
杨峰
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杨众
杨峰
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Priority to CN201210291241.7A priority Critical patent/CN103088915B/en
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Abstract

The invention discloses a cast-in-site column with a column cap and a construction method. The cast-in-site column comprises a concrete column body and reinforcements embedded in the column body, and is characterized in that the column cap is arranged at a joint of the end of an external precast superposed beam on the column body; the width of the section of the column cap is larger than that of the section of the column body; and the end of the precast beam is supported by the column cap. By adoption of the technology, the section of a core section area of a beam column joint can be enlarged, so that the shear-bearing capacity of the joint is greatly improved, and the joint is not damaged prior to a member during an earthquake.

Description

A kind of cast-in-place post and job practices with cap
Technical field
The present invention relates to a kind of post of building, relate in particular to the cast-in-situ reinforced concrete post with cap in a kind of integral precast structure.
Background technology
earthquake resistant code according to building structure, the principle of seismic design is " strong node, weak member " to avoid node prior to component damage, and a large number of experiments show that, the column section that increases bean column node is the effective way that improves the node shear strength, and the post in traditional bean column node general all with the shaft uniform section, and bean column node place reinforcing bar is intensive, stirrup colligation difficulty, concrete waters that to smash difficulty large, in cast-in-situ reinforced concrete structure, common beam column waters concrete simultaneously in addition, post and node are difficult to adopt the high-grade concrete that is different from beam, cause that column section is large or safety factor is on the low side, a kind of high strength post with cap of Prefabricated superposed beam that coordinates has no report.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency of above-mentioned prior art, provides that a kind of node shear resistance is strong, construction is simply with cast-in-place post and the job practices of cap.
According to a kind of cast-in-place post with cap provided by the invention, comprise concrete cylinder and the reinforcing bar that is embedded in described cylinder, be provided with cap with outside Prefabricated superposed beam end of body junction on described cylinder, described cap breadth of section is greater than the breadth of section of described cylinder, and the part of the enlarged cross section of described cap supports the end of precast beam.
Also have following attached technical characterictic according to a kind of cast-in-place post with cap provided by the invention:
Be embedded with the cap reinforcing bar in described cap, the U font horizontal reinforcement diagonal cross in described cap reinforcing bar is embedded in the augmenting portion concrete of cross section, and the linear reinforcing bar both ends of the curved steel of two ends band in described cap reinforcing bar are embedded in the augmenting portion concrete of cross section.
Be used for to support the horizontally embedded stiffener of shelving that one deck is at least arranged of the cross section augmenting portion of precast beam in described cap
Described cap at least at the bottom of beam the concrete of the following part of above back different from the concrete label of described cylinder, the concrete of described cap is steel fiber high-strength concrete.
Vertically be embedded with the post joint bar in described cap, described post joint bar stretches into certain-length in the post of upper strata.
Described cap with than the contacted part beam-ends of crossbeam bottom, and be provided with the Prefabricated Concrete piece at the bottom of the beam-ends of less precast beam contacted position, Prefabricated Concrete piece top is embedded with pre-embedded steel slab, exposes dowel on steel plate and inserts in the cap concrete.
Horizontally embedded in described cap have beam to add the cracking resistance reinforcing bar, and at least one end of reinforcing bar stretches into the interior certain-length of rear pouring concrete in beam.
The elongated embedding steel pipe that has in described cylinder center is filled with concrete in described steel pipe, is welded with connecting piece in the junction with precast beam on described steel pipe.
According to the cast-in-place column construction method that a kind of cap provided by the invention divides secondary to water to smash, construction according to the following steps:
A, local cap and post are pricked muscle, formwork;
B, concrete water to be smash to the precast beam bottom surface; Bury the Prefabricated Concrete piece underground under the less beam of deck-molding;
C, dismounting column template;
D, hoisting prefabricated beam are held under beam on cap;
E, residue cap, superposed beam, Bars In Poured Concrete Slab are pricked the muscle formwork;
F, water all concretes to floor face.
According to the job practices of a kind of cast-in-place steel pipe concrete superposed column with cap provided by the invention, construction according to the following steps:
The concrete filled steel tubular column at A, erection column center;
B, hoisting prefabricated beam and firm with the connector connection on steel pipe column;
C, post and cap are pricked the muscle formwork;
D, superposed beam and floor slab formerecting, bundle muscle;
E, water post concrete and other parts concrete with cap respectively.
Compared with prior art have following advantage according to a kind of cast-in-place post with cap provided by the invention:
1, the cross section, core of section district of bean column node enlarges, and the node shear resistance is improved greatly, and the assurance node not prior to component damage, really satisfies the seismic design principle of " strong node, weak member " when earthquake.
2, the elongated thin-wall steel tube concrete of establishing in post, not only improve the ductility of post, and ductility of joint improved greatly, can also carry out graded crossing construction operation, accelerating construction progress greatly in conjunction with precast beam install.
3, the horizontal segment that the bottom steel strand after the node cross section enlarges in precast beam anchor into node increases, the steel strand anchoring performance improvement.
4, after the expansion cap, prefabricated beam end stretches in cap, has thoroughly solved the problem of the normal section shearing resistance weakening of beam-ends the old and new concrete bonding surface, makes the globality of integral precast system identical with full cast-in-place structural.
5, core space adopts the u tie muscle of opening and the straight line stirrup of two ends band crotch, can facilitate the stirrup construction, but end anchorage is in the enlarged concrete and do not affect its shear behavior.
6, when adopting post first to construct the construction technology of rear hoisting beam, the column section enlarged at the bottom of beam can be used for shelving precast beam and greatly facilitates beam to install, and reduces simultaneously construction cost.
7, due to the enclosing of precast beam, the concrete of post and bean column node can adopt high-grade concrete and floor concrete to separate to water easily to be smash and need not to take other measure, can reduce like this column section or improve the safety factor of post.
Description of drawings
Fig. 1 is the front view of one of work progress of the present invention.
Fig. 2 is the node diagram that beam of the present invention and post connect.
Fig. 3 is post and the beam coupling arrangement figure that steel pipe is arranged in the present invention.
Fig. 4 is cap arrangement of reinforcement in the present invention.
Fig. 5 is the stereogram of Prefabricated Concrete in the present invention
Fig. 6 is cap front view of the present invention.
The specific embodiment
Referring to Fig. 1 to Fig. 6, embodiment at a kind of cast-in-place post with cap provided by the invention, comprise concrete cylinder 1 and the reinforcing bar 2 that is embedded in described cylinder 1, be provided with cap 3 with outside Prefabricated superposed beam end of body junction on described cylinder 1, described cap 3 breadth of section are greater than the breadth of section of described cylinder 1, and the enlarged cross section of described cap 3 partly supports the end of precast beam.The present invention arranges cap 3 at the top of cylinder 1, and described cap 3 is beneficial to precast beam and shelves thereon, and convenient construction has solved simultaneously precast beam and rectified the problem that the cross section shearing resistance weakens.After being cast in post and precast beam together, the shear resistance of this node improves greatly, and anti-seismic performance is better.
Referring to Fig. 4, in above-described embodiment that the present invention provides, be embedded with cap reinforcing bar 31 and 32 in described cap 3, the U font horizontal reinforcement diagonal cross in described cap reinforcing bar 31 is embedded in the augmenting portion concrete of cross section.And reinforcing bar 32 both-end crotches are anchored in the enlarged concrete, and colligation facilitates but anchoring property does not reduce.Described reinforcing bar 31,32 can improve the shear resistance of cap node.
Referring to Fig. 2, in above-described embodiment that the present invention provides, be used for supporting the horizontally embedded stiffener 38 of shelving of cross section augmenting portion of precast beam in described cap 3.Described stiffener 38 is netted horizontal positioned, can divide multilayer, is one deck in the present embodiment, and 38 of stiffeners are shelved bending resistance partly and the intensity needs of Punching Shear for satisfying the construction stage.
Referring to Fig. 2 to Fig. 4, in above-described embodiment that the present invention provides, the concrete in described cap 3 depth of beam scopes is different from the concrete label of described cylinder 1, and the concrete of described cap 3 is steel fiber high-strength concrete.Cap 3 adopts High Strength Concrete to make the shear resistance of node further improve, and can reduce the anchorage length of beam muscle, satisfies shockproof requirements.
Referring to Fig. 1, in above-described embodiment that the present invention provides, be embedded with post joint bar 34 in described cap 3, described joint bar 34 stretches into upper strata post certain-length.Described joint bar 34 improves ductility and the shear resistance of post lower end, upper strata simultaneously for strengthening node shear strength and ductility.
Referring to Fig. 1, Fig. 2, Fig. 4, Fig. 5, in above-described embodiment that the present invention provides, described cap 3 and the position that contacts than crossbeam, beam-ends bottom is embedded with built-in fitting, this built-in fitting can with the built-in fitting welding of beam bottom.And be provided with precast concrete block 35 with at the bottom of position beam-ends that less precast beam contacts, precast concrete block 35 tops are embedded with steel plate 351, be welded with the solid muscle 352 of steel under iron plate, the concrete piece is stretched out in the anchor bar lower end, and insert in the cap concrete, the steel plate 351 on precast concrete block also be used for precast beam on the bottom built-in fitting weld, guarantee after precast beam install firm, above-mentioned larger beam is generally girder, and less beam is that height is less than the Vierendeel girder of girder.
Referring to Fig. 3, in above-described embodiment that the present invention provides, the elongated embedding steel pipe 12 that has in described cylinder 1 center is filled with concrete in described steel pipe 12, is welded with connecting piece 13 in the junction with precast beam on described steel pipe 12.Described steel pipe 12 can improve intensity and the toughness of described cylinder 1, and described connecting piece 13 is convenient to be connected with the installation of precast beam, also further improves the shear resistance of Nodes.
Referring to Fig. 2, in above-described embodiment that the present invention provides, the interior horizontally embedded additional cracking resistance reinforcing bar 39 that has of described cap 3, reinforcing bar 39 pass at least one end of cap stretch into Prefabricated superposed beam after water in the part concrete, or pre-buried additional cracking resistance reinforcing bar in precast beam, exposed parts stretches in cap, and additional cracking resistance reinforcing bar 39 is used for satisfying the beam shockproof requirements.
According to a kind of cast-in-place column construction method with cap provided by the invention, construction according to the following steps:
A, prick muscle, formwork with the post of cap;
B, concrete water to be smash to the precast beam bottom surface, and the beam underlay concrete piece that deck-molding is less is produced the post of band portion cap;
C, stripping;
D, hoisting prefabricated beam are held under beam on cap;
E, residue cap, the cast-in-place part of superposed beam, Bars In Poured Concrete Slab are pricked the muscle formwork;
F, water all concretes to floor face.
Cast-in-place part cap in above-mentioned job practices can be shelved precast beam, has saved the temporary supporting of precast beam install, greatly facilitates construction.
According to the job practices of another kind provided by the invention with the cast-in-place steel pipe concrete superposed column of cap, construction according to the following steps:
The concrete filled steel tubular column at A, erection column center;
B, hoisting prefabricated beam and firm with the connector connection on steel pipe column;
C, post and cap are pricked the muscle formwork;
D, superposed beam and floor slab formerecting, bundle muscle;
E, water post concrete and other parts concrete with cap respectively.
Such scheme is the method during with the post of steel pipe for processing, be provided with connector on this steel pipe column, hoisting prefabricated beam in advance is then at the remainder of construction cap and post, make cap and precast beam disposable integral be cast in together, speed of application is accelerated greatly.

Claims (10)

1. cast-in-place post with cap, comprise concrete cylinder and the reinforcing bar that is embedded in described cylinder, it is characterized in that being provided with cap with outside Prefabricated superposed beam end of body junction on described cylinder, described cap breadth of section is greater than the breadth of section of described cylinder, and the part of the enlarged cross section of described cap supports the end of precast beam.
2. cast-in-place post as claimed in claim 1, it is characterized in that being embedded with in described cap the cap reinforcing bar, U font horizontal reinforcement diagonal cross in described cap reinforcing bar is embedded in the augmenting portion concrete of cross section, and the linear reinforcing bar both ends of the two ends band crotch in described cap reinforcing bar are embedded in the augmenting portion concrete of cross section.
3. cast-in-place post as claimed in claim 1 is characterized in that being used in described cap supporting the horizontally embedded stiffener of shelving that one deck is at least arranged of the cross section augmenting portion of precast beam.
4. cast-in-place post as claimed in claim 1, it is characterized in that described cap at least at the bottom of beam the concrete of the following part of above back different from the concrete label of described cylinder, the concrete of described cap is steel fiber high-strength concrete.
5. cast-in-place post as claimed in claim 1, is characterized in that vertically being embedded with in described cap the post joint bar, and described post joint bar stretches into certain-length in the post of upper strata.
6. cast-in-place post as claimed in claim 1, it is characterized in that described cap and be embedded with built-in fitting bottom the contacted part beam-ends of crossbeam, with be provided with the Prefabricated Concrete piece at the bottom of the beam-ends of less precast beam contacted position, Prefabricated Concrete piece top is embedded with pre-embedded steel slab, exposes dowel on steel plate and inserts in the cap concrete.
7. cast-in-place post as claimed in claim 1 is characterized in that horizontally embeddedly in cap having beam add the cracking resistance reinforcing bar, and at least one end of reinforcing bar stretches into the interior certain-length of rear pouring concrete in beam.
8. cast-in-place post as claimed in claim 1, is characterized in that the elongated embedding steel pipe that has in described cylinder center, is filled with concrete in described steel pipe, is welded with connecting piece in the junction with precast beam on described steel pipe.
9. the cast-in-place column construction method that cap divides secondary to water concrete, construction according to the following steps:
A, local cap and post are pricked muscle, formwork;
B, concrete water to be smash to the precast beam bottom surface; Bury the Prefabricated Concrete piece underground under the less beam of deck-molding;
C, dismounting column template;
D, hoisting prefabricated beam are held under beam on cap;
E, residue cap, superposed beam, Bars In Poured Concrete Slab are pricked the muscle formwork;
F, water all concretes to floor face.
10. the job practices with the cast-in-place steel pipe concrete superposed column of cap, construction according to the following steps:
The concrete filled steel tubular column at A, erection column center;
B, hoisting prefabricated beam and firm with the connector connection on steel pipe column;
C, post and cap are pricked the muscle formwork;
D, superposed beam and floor slab formerecting, bundle muscle;
E, water post concrete and other parts concrete with cap respectively.
CN201210291241.7A 2012-08-16 2012-08-16 A kind of cast-in-place post with cap and construction method Active CN103088915B (en)

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Application Number Priority Date Filing Date Title
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CN103088915B CN103088915B (en) 2016-06-29

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216094A (en) * 2013-05-08 2013-07-24 内蒙古兴泰建筑有限责任公司 Construction method for adjustable arc-shaped beam cylindrical node assembling clamp
CN103711245A (en) * 2013-12-20 2014-04-09 魏琏 Hollow beamless floor system structure and construction method thereof
CN103835373A (en) * 2014-03-25 2014-06-04 中国建筑第二工程局有限公司 Annulated column cap embedded part and construction method thereof
CN103993701A (en) * 2014-06-03 2014-08-20 中国建筑第二工程局有限公司 Petal-shaped concrete column and construction method thereof
CN104695555A (en) * 2013-12-06 2015-06-10 中建四局第五建筑工程有限公司 Construction process for joint of large-section beam column of different concrete strength grades
CN105350642A (en) * 2015-12-01 2016-02-24 江苏筑森建筑设计有限公司 Post cap connected with cast-in-situ concrete beam shaped like Chinese character 'mi'
CN106149879A (en) * 2016-07-01 2016-11-23 四川省建筑科学研究院 The spelling dress floor system of spelling dress plate-column structure and composition thereof
CN106677202A (en) * 2016-11-30 2017-05-17 福建省建筑设计研究院 Prefabricated ground and construction method
CN110512800A (en) * 2019-09-03 2019-11-29 宁波优造建筑科技有限公司 A kind of steel and concrete combined structure system and construction method
CN111364681A (en) * 2020-03-17 2020-07-03 刘荣春 Prefabricated section steel concrete end column-beam node prestressed tendon staggered tensioning anchoring structure for assembly building and construction method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173339A (en) * 1992-12-10 1994-06-21 Kajima Corp Constructing method for joining section for column/beam
CN1224101A (en) * 1998-01-22 1999-07-28 林立岩 Structural design and construction method for steel tube and high-strength concrete coincidence column
CN1587559A (en) * 2004-07-15 2005-03-02 北京建工一建工程建设有限公司 Bean column node unequal strength concrete replacing structure and its construction method
JP2008127940A (en) * 2006-11-24 2008-06-05 Kurosawa Construction Co Ltd Structure and method for joining column and beam together

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173339A (en) * 1992-12-10 1994-06-21 Kajima Corp Constructing method for joining section for column/beam
CN1224101A (en) * 1998-01-22 1999-07-28 林立岩 Structural design and construction method for steel tube and high-strength concrete coincidence column
CN1587559A (en) * 2004-07-15 2005-03-02 北京建工一建工程建设有限公司 Bean column node unequal strength concrete replacing structure and its construction method
JP2008127940A (en) * 2006-11-24 2008-06-05 Kurosawa Construction Co Ltd Structure and method for joining column and beam together

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216094B (en) * 2013-05-08 2016-08-24 内蒙古兴泰建筑有限责任公司 A kind of adjustable arc-shaped beam cylindrical node assembling clamp construction method
CN103216094A (en) * 2013-05-08 2013-07-24 内蒙古兴泰建筑有限责任公司 Construction method for adjustable arc-shaped beam cylindrical node assembling clamp
CN104695555A (en) * 2013-12-06 2015-06-10 中建四局第五建筑工程有限公司 Construction process for joint of large-section beam column of different concrete strength grades
CN103711245B (en) * 2013-12-20 2017-02-22 魏琏 Hollow beamless floor system structure and construction method thereof
CN103711245A (en) * 2013-12-20 2014-04-09 魏琏 Hollow beamless floor system structure and construction method thereof
CN103835373A (en) * 2014-03-25 2014-06-04 中国建筑第二工程局有限公司 Annulated column cap embedded part and construction method thereof
CN103835373B (en) * 2014-03-25 2016-03-09 中国建筑第二工程局有限公司 The construction method of a kind of annular cap built-in fitting and annular concrete cap
CN103993701A (en) * 2014-06-03 2014-08-20 中国建筑第二工程局有限公司 Petal-shaped concrete column and construction method thereof
CN103993701B (en) * 2014-06-03 2016-05-18 中国建筑第二工程局有限公司 A kind of petal concrete column and construction method thereof
CN105350642A (en) * 2015-12-01 2016-02-24 江苏筑森建筑设计有限公司 Post cap connected with cast-in-situ concrete beam shaped like Chinese character 'mi'
CN105350642B (en) * 2015-12-01 2017-07-28 江苏筑森建筑设计股份有限公司 The cap of one kind connection " rice " type Cast-in-place concrete beam
CN106149879A (en) * 2016-07-01 2016-11-23 四川省建筑科学研究院 The spelling dress floor system of spelling dress plate-column structure and composition thereof
CN106677202A (en) * 2016-11-30 2017-05-17 福建省建筑设计研究院 Prefabricated ground and construction method
CN110512800A (en) * 2019-09-03 2019-11-29 宁波优造建筑科技有限公司 A kind of steel and concrete combined structure system and construction method
CN111364681A (en) * 2020-03-17 2020-07-03 刘荣春 Prefabricated section steel concrete end column-beam node prestressed tendon staggered tensioning anchoring structure for assembly building and construction method

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