CN105256891B - High-strength bottom muscle Precast Concrete Frame - Google Patents

High-strength bottom muscle Precast Concrete Frame Download PDF

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Publication number
CN105256891B
CN105256891B CN201510596055.8A CN201510596055A CN105256891B CN 105256891 B CN105256891 B CN 105256891B CN 201510596055 A CN201510596055 A CN 201510596055A CN 105256891 B CN105256891 B CN 105256891B
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precast concrete
steel bar
core
bar stress
shaped keyway
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CN105256891A (en
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郭正兴
管东芝
刘家彬
于建兵
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Southeast University
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Southeast University
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Abstract

The invention discloses a kind of high-strength bottom muscle Precast Concrete Frame, including precast concrete column, precast concrete beam, beam bottom steel bar stress, U-shaped keyway, core roof beam structure stud, rectangular tight stirrup, core beam and back regular reinforcement;The beam-ends of the precast concrete beam leaves U-shaped keyway and beam bottom steel bar stress uses high tensile reinforcement, above the steel bar stress of the beam bottom core roof beam structure stud is provided with the range of U-shaped keyway, the rectangular tight stirrup for surrounding beam bottom steel bar stress is set up in U-shaped keyway by core roof beam structure stud, forms core beam;Beam bottom steel bar stress stretches out beam-ends, and bends up to form crotch upwards, and extension lateral bending avoids precast concrete column cage bar, is anchored in beam-column connection core space.Structure of the present invention strengthens prefabrication and assembly construction Seismic Performance of Concrete Frame, improves the universality of component production and field node installation, and meets the main trend for promoting the use of high tensile reinforcement.

Description

High-strength bottom muscle Precast Concrete Frame
Technical field
The present invention relates to a kind of high-strength bottom muscle Precast Concrete Frame, belong to architectural engineering concrete frame structure skill Art field.
Background technology
Precast concrete can greatly improve construction ability and construction speed, save a large amount of labours, ensure construction Quality, and be advantageous to the requirement for reaching " environmental protection of four section one ", go into overdrive to carry out " building industrialization, housing industry in country Change ", promoting under the background of green building and green construction has good development prospect.The prefabricated dress of application can be put at present The problems such as with frame structure system in the prevalence of precision processing request height, applicability deficiency, construction inconvenience, this causes pre- Assembling framework structure application advantage processed and unobvious.
The content of the invention
It is an object of the invention to overcome the bottleneck of existing Precast Concrete Frame scale application, there is provided Yi Zhonggao Strong bottom muscle Precast Concrete Frame, the structure can reduce will to the precision of steel bar stress arrangement in prefabricated components manufacture central sill Ask, improve the universality of the production of prefabrication and assembly construction frame structure component and field node installation, effectively solve the above problems.
The technical solution adopted by the present invention is:A kind of high-strength bottom muscle Precast Concrete Frame, including precast concrete Post, precast concrete beam, beam bottom steel bar stress, U-shaped keyway, core roof beam structure stud, rectangular tight stirrup, core beam and back are common Reinforcing bar;
The precast concrete column is configured with vertical reinforcement, and the precast concrete beam is shelved on the mixed of precast concrete column On solidifying protective soil layer, beam-column connection is formed;
The beam-ends of the precast concrete beam leaves U-shaped keyway and beam bottom steel bar stress uses high tensile reinforcement, the beam Core roof beam structure stud is provided with the range of U-shaped keyway above the bottom steel bar stress of end, is set up by core roof beam structure stud in U-shaped keyway Around the rectangular tight stirrup of beam bottom steel bar stress, core beam is formed;
Beam bottom steel bar stress stretches out beam-ends, and bends up to form crotch upwards, and extension lateral bending is avoided prefabricated mixed Solidifying earth pillar cage bar, is anchored in beam-column connection core space;
The precast concrete beam installs back regular reinforcement, and together with the whole cast-in-place coagulation in beam-column connection region Soil, form assembled integral connecting node.
Preferably, beam bottom steel bar stress uses 600MPa level high tensile reinforcements, diameter takes 12mm to 16mm, high Strong reinforcing bar stretches out beam-ends certain length above trough floor, and end bends up to form crotch upwards, and beam-ends high tensile reinforcement can utilize it Flexibility is flexibly bent since U-lag starting point, and can smoothly avoid post muscle in node installation process anchors into node area, side Beam prefabricated and field node installation.
Preferably, arrangement has covering in beam bottom steel bar stress to the concrete cover between component epidermis The steel bar welding net of effect, improve span centre crack developing situation.
Preferably, placed on the beam-column connection both sides U-shaped keyway and the reasonable altitudes of joint cores additional Straight reinforcing bar, the bending resistance of beam-ends at beam column piece face is strengthened, its plastic hinge under earthquake cyclic reverse loading is realized outer move.
Beneficial effect:(1) present invention uses precast concrete beam of the high tensile reinforcement as bottom steel bar stress, can reduce beam Steel using amount reduces beam section, reaches the purpose for saving material;(2) prefabricated beam-ends sets certain length U-shaped groove, coagulation in groove Soil and node concrete one-piece casting, improve the shearing resistance on beam column composition surface.In addition, the setting of groove, it is possible to increase high strengthening tendons Free bend segment length, easily carry out spatial intersecting bending using the flexibility of small dimension high tensile reinforcement, thoroughly solve pre- The construction difficult problem that different directions beam bottom reinforcing bar easily collides with post muscle when beam processed is in place;(3) continuous, the node concrete of back reinforcing bar One-piece casting, beam keyway inner core beam portion point reinforcement, realize strong ties node, can give full play to and improve the anti-of frame structure Shake ability.
Brief description of the drawings
Fig. 1 is the precast concrete beam schematic diagram of the present invention;
Fig. 2 is Fig. 1 sectional view;
Fig. 3 is the connecting node schematic diagram of the present invention;
Fig. 4 is Fig. 3 sectional view.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2:High-strength bottom muscle Precast Concrete Frame precast beam, both ends set U-shaped keyway 1, beam bottom Steel bar stress 2 is heat-treated high tensile reinforcement with ribbing using 12mm, 14mm, 16mm small dimension 600MPa levels with certain flexibility, Beam connection end is stretched out, and bends up to form crotch upwards, core roof beam structure stud 3 is set on high strengthening tendons top, for forming core beam, at beam bottom Steel bar welding net 4 of the arrangement with diaphragms effect in stress cage bar to the concrete cover between component epidermis, improves in girder span Ftracture situation at position.
As shown in Figures 3 and 4:High-strength bottom muscle Precast Concrete Frame connecting node, is configured with the prefabricated of vertical reinforcement After concrete column 5 is installed in place, precast concrete beam 6 is lifted and is shelved on the concrete cover of precast concrete column 5 temporarily On, beam-ends bottom steel bar stress 2 is manually bent to form interlaced arrangement, stretches into section according to the physical location of live post vertical reinforcement Point area is anchored, and the small rectangular closed stirrup 7 around high strengthening tendons is set up in beam section keyway, core beam 8 is formed, then at node Additional straight reinforcing bar 9 is put in both sides U-lag and joint cores on certain altitude, back regular reinforcement 10 is inserted in beam stirrup, And banding fixed, last cast in situs node district concrete 11, form fabricated assembly overall beam-column connection.
Embodiments of the present invention are described in detail above in association with accompanying drawing, but the present invention is not limited to described reality Apply mode.For one of ordinary skill in the art, in the range of the principle of the present invention and technological thought, to these implementations Mode carries out a variety of changes of embodiment progress, modification, replacement and deformation and still fallen within protection scope of the present invention.

Claims (1)

  1. A kind of 1. high-strength bottom muscle Precast Concrete Frame, it is characterised in that:Including precast concrete column, precast concrete Beam, beam bottom steel bar stress, U-shaped keyway, core roof beam structure stud, rectangular tight stirrup, core beam and back regular reinforcement;
    The precast concrete column is configured with vertical reinforcement, and the precast concrete beam is shelved on the concrete of precast concrete column On protective layer, beam-column connection is formed;
    The beam-ends of the precast concrete beam leaves U-shaped keyway and beam bottom steel bar stress uses high tensile reinforcement, the beam bottom Core roof beam structure stud is provided with the range of U-shaped keyway above steel bar stress, is set up by core roof beam structure stud in U-shaped keyway around beam The rectangular tight stirrup of bottom steel bar stress, form core beam;
    Beam bottom steel bar stress stretches out beam-ends, and bends up to form crotch upwards, and extension lateral bending avoids precast concrete Post cage bar, it is anchored in beam-column connection core space;
    The precast concrete beam installs back regular reinforcement, and together with the cast-in-place concrete of whole beam-column connection region, shape Into assembled integral connecting node;
    Beam bottom steel bar stress uses 600MPa level high tensile reinforcements, and high tensile reinforcement diameter uses 12 mm or 14mm;
    Steel bar welding of the arrangement with diaphragms effect in beam bottom steel bar stress to the concrete cover between component epidermis Net;
    Place additional straight reinforcing bar in the top of the beam-column connection both sides U-shaped keyway and joint cores.
CN201510596055.8A 2015-09-17 2015-09-17 High-strength bottom muscle Precast Concrete Frame Active CN105256891B (en)

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Application Number Priority Date Filing Date Title
CN201510596055.8A CN105256891B (en) 2015-09-17 2015-09-17 High-strength bottom muscle Precast Concrete Frame

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CN105256891A CN105256891A (en) 2016-01-20
CN105256891B true CN105256891B (en) 2018-02-06

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625572B (en) * 2016-02-29 2018-05-15 东南大学 Distinctiveness uses the precast prestressed concrete frame bean column node of high performance material
CN105649203B (en) * 2016-02-29 2018-07-17 东南大学 Precast prestressed concrete frame bean column node with U-shaped muscle and sleeve
CN105625573B (en) * 2016-02-29 2018-08-21 东南大学 The bean column node of intensity presstressed reinforcing steel and regular reinforcement sleeve connection in beam bottom
CN105735470B (en) * 2016-02-29 2018-08-21 东南大学 The differential precast concrete frame system using high performance material
CN105625571B (en) * 2016-02-29 2018-08-21 东南大学 The precast concrete bean column node of strength prestressed muscle in a kind of use
CN105951984B (en) * 2016-05-24 2019-05-21 东南大学 A kind of high ductility prefabricated integral frame mid-side node connection structure and construction method
CN106013432B (en) * 2016-05-24 2019-05-17 东南大学 A kind of high ductility prefabricated integral frame interior joint connection structure and construction method
CN106638947A (en) * 2016-12-20 2017-05-10 有利华建材(惠州)有限公司 Prefabricated frame structure and cascaded prefabrication construction method thereof
CN106948481B (en) * 2017-05-02 2019-05-07 扬州大学 Prefabrication and assembly construction concrete frame beam-column connection based on the high strengthening tendons in part
CN107119802B (en) * 2017-05-19 2020-06-09 中国建筑第八工程局有限公司 Connecting method of skin steel plates
CN110241915A (en) * 2019-05-07 2019-09-17 济南大学 A kind of assembly concrete beam column L-type muscle integrated connection node and application method

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JP2004052389A (en) * 2002-07-22 2004-02-19 Taisei Corp Panel zone constructing method and precast beam
CN102287029A (en) * 2011-06-20 2011-12-21 北京工业大学 High-strength reinforcement built-in ultra high performance concrete (UHPC) beam member
CN202596028U (en) * 2012-03-19 2012-12-12 河南理工大学 Carbon fiber pres-stressed reinforcing steel and high strength steel bar ultra-high toughness fiber reinforced cement-based composite beam structure
CN102852281A (en) * 2012-08-16 2013-01-02 杨众 Prestressed precast main beam with laying gaps
CN203866982U (en) * 2014-05-28 2014-10-08 江苏尚昇建设集团有限公司 Prefabricated beam end joint structure
CN204983143U (en) * 2015-09-17 2016-01-20 东南大学 End muscle precast concrete frame construction excels in

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004052389A (en) * 2002-07-22 2004-02-19 Taisei Corp Panel zone constructing method and precast beam
CN102287029A (en) * 2011-06-20 2011-12-21 北京工业大学 High-strength reinforcement built-in ultra high performance concrete (UHPC) beam member
CN202596028U (en) * 2012-03-19 2012-12-12 河南理工大学 Carbon fiber pres-stressed reinforcing steel and high strength steel bar ultra-high toughness fiber reinforced cement-based composite beam structure
CN102852281A (en) * 2012-08-16 2013-01-02 杨众 Prestressed precast main beam with laying gaps
CN203866982U (en) * 2014-05-28 2014-10-08 江苏尚昇建设集团有限公司 Prefabricated beam end joint structure
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