CN108385836A - Reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame - Google Patents

Reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame Download PDF

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Publication number
CN108385836A
CN108385836A CN201810212185.0A CN201810212185A CN108385836A CN 108385836 A CN108385836 A CN 108385836A CN 201810212185 A CN201810212185 A CN 201810212185A CN 108385836 A CN108385836 A CN 108385836A
Authority
CN
China
Prior art keywords
frame
cast
reinforcing bar
column
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810212185.0A
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Chinese (zh)
Inventor
王玉田
张平
姜福香
姜建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Li Zheng Construction Technology Co Ltd
Ronghua Construction Group Co Ltd
Qingdao University of Technology
Original Assignee
Qingdao Li Zheng Construction Technology Co Ltd
Ronghua Construction Group Co Ltd
Qingdao University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Li Zheng Construction Technology Co Ltd, Ronghua Construction Group Co Ltd, Qingdao University of Technology filed Critical Qingdao Li Zheng Construction Technology Co Ltd
Priority to CN201810212185.0A priority Critical patent/CN108385836A/en
Publication of CN108385836A publication Critical patent/CN108385836A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor

Abstract

The present invention provides a kind of reinforcing bars to run through the novel beam-to-column joint structure of cast-type concrete frame, it includes node, reinforcing bar, cast-in-place concrete Vierendeel girder and the concrete frame constructing in site of cast in place frame column and in-situ frame beam, the cast in place frame column is extended with the reinforcing bar in cast in place frame girder connection, node is extended through, is mechanically connected in inflection point.Its good integrity, rigidity is big, and anti-knock shock resistance is good, good waterproof performance, to the adaptable of concave plane.

Description

Reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame
Technical field
The invention belongs to reinforced concrete technology fields, and in particular to a kind of reinforcing bar is novel through cast-type concrete frame Beam-to-column joint structure.
Background technology
It is reinforced concrete frame structure class building that China has greatly in the architectural engineering built every year.Frame knot Structure bean column node is also referred to as " joint cores ", is the important component of agent structure.With construction technology continue to develop and The structural form of the diversification of structure type, the position of joints such as beam, column becomes increasingly complex, at the same to construction bring it is many not Just, and at node easy to produce quality problems.By carrying out nodal test to Laoshan building structure, analysis result obtains Go out that there are the nodes of quality problems to account for 20% or so., it was also found that the earthquake of frame structure at home and abroad being investigated in all previous earthquake Destruction mostly occurs in beam column node area.
The disease of reinforced concrete frame node is mainly bean column node inner concrete leakiness, will appear coagulation at node Phenomena such as soil falls off, voids and pits.This kind of disease after all mainly due in traditional design two-way frame beam column reinforcing bar from Several different directions are anchored in node, cause the position reinforcing bar to be overlapped layer by layer, bar spacing is caused not meet code requirement; Simultaneously because concreting is difficult, vibrating spear is difficult to effectively vibrate, lead to node inner concrete leakiness, to cause quality Problem and hidden dangers in project.Joint cores are the key positions for ensureing frame bearing capacity and structure ductility, if to disease problem Let matters drift, natural cause, heavy duty, sound load long term under, consequence will be hardly imaginable, will directly affect building knot Structure it is safe to use, cause the people's lives and property to lose.So from construction and the more structurally sound steel of security standpoint comprehensive study Reinforced concrete frame novel joint has important engineering and social effect.
Existing reinforced concrete frame novel joint is all made of prefabricated assembled.Guo Haishan et al. researchs have been invented a kind of pre- Stress assembly concrete frame joint connection structure (denomination of invention:Prestressing force assembly concrete frame joint connection structure And its construction method, the patent No.:CN107165272A), the present invention includes precast concrete column, precast concrete composite beam, folds It closes floor, the post-tensioned prestressed reinforcement beam of connection precast concrete column and precast concrete composite beam, bending resistance energy consumption reinforcing bar and resists Cut high tensile reinforcement.A kind of fully-prefabricated assembled steel tube confinement frame joint (denomination of invention has been invented in Zheng Lian fine jades et al. research:It is a kind of Fully-prefabricated assembled steel tube confinement frame joint, the patent No.:CN106049691A), which includes core space inner frame, constraint Steel pipe and beam-ends built-in fitting, core space inner frame are installed in constraint steel pipe, and beam-ends built-in fitting is welded in outside constraint steel pipe, core Area's inner frame includes at least two diaphragm plates of spaced and parallel setting and a plurality of tendon bushes of wearing being arranged in diaphragm plate, cross Injected hole is provided on partition board.A kind of assembled steel reinforced concrete frame node and its making side have been invented in Yao Fang brightness et al. research Method (denomination of invention:A kind of assembled steel tendon concrete frame structure bean column node, the patent No.:CN107288218A), it is by pre- Frame column processed is set a roof beam in place with prefabricated frame splices node and cast-in-place concrete composition, and the column in prefabricated frame trestle is indulged muscle and stretched out from column top It constitutes capital and reserves vertical muscle, the vertical muscle of several node columns is arranged in the reserved muscle periphery of indulging in capital, and is bound with the reserved vertical muscle in capital, prefabricated Vierendeel girder splice in prefabricated frame trestle capital, prefabricated frame set a roof beam in place in beam bottom indulge muscle to prefabricated frame set a roof beam in place spelling joint direction stretch out, Across splicing node straight line anchoring.A kind of concrete frame node (denomination of invention has been invented in Qu Xiushu et al. researchs:A kind of coagulation Native frame joint, the patent No.:CN107012952A), which is by the way that fixing device is arranged on concrete column, coordinates pre- Locking device is set on beam processed, and is installed on locking device and fixing device by the way that the both ends of dissipative member are detachable, from And realize the connection between precast beam and concrete column.Zhang Min et al. has invented a kind of steel reinforced concrete frame structure (invention name Claim:Steel reinforced concrete frame structure, patent No. CN103882993A:), it includes the profile steel concrete column and transverse direction being vertically arranged The drum girder steel of arrangement, profile steel concrete column include the shaped steel with section steel flange being arranged inside, and drum girder steel includes upper and lower water Divide two steel beam flanges of cloth equally, one end and the section steel flange of steel beam flange are rigidly connected, the company of steel beam flange and section steel flange The shape for connecing end is the isosceles trapezoid of inner wide and outer narrow.Although prefabricated assembled frame joint can save template, globality, Rigidity, anti-seismic performance are poor.
The present invention is quasi- to use cast-type reinforced concrete frame novel joint, simple structure, reliable in quality, and cast-type steel Tendon concrete structure good integrity, rigidity is big, and anti-knock shock resistance is good, good waterproof performance, to the adaptable of concave plane.
Invention content
It is intensive based on bar connecting between conventional steel bar concrete frame joint in the prior art, concreting is difficult, shake Tamper is difficult to effective vibration compacting, easily occurs quality problems between node and prefabricated assembling type reinforced concrete frame joint is whole Property, rigidity, anti-seismic performance it is poor, the present invention provides a kind of reinforcing bar and runs through cast-type concrete frame joint, good integrity, just Degree is big, and anti-knock shock resistance is good, good waterproof performance, to the adaptable of concave plane.
Based on this, a kind of reinforcing bar of present invention offer runs through the novel beam-to-column joint structure of cast-type concrete frame comprising The node of cast in place frame column and in-situ frame beam, reinforcing bar, cast-in-place concrete Vierendeel girder and concrete frame constructing in site, it is described cast-in-place Frame column is extended with the reinforcing bar in cast in place frame girder connection, extends through node, is mechanically connected in inflection point.
Wherein, the reinforcing bar of the joint area of bar connecting is using mechanical connection.
Wherein, Vierendeel girder longitudinal reinforcement jointing position is located at the top bars being evenly arranged in cast-in-situ concrete beam and connects In Vierendeel girder within the scope of 1/3 clear span of span centre, 1/3 span scope of bearing is leaned in lower layer's splice position in frame beam-ends for head position It is interior.
Beneficial technique effect
Reinforcing bar provided by the invention runs through cast-type concrete frame joint, and good integrity, rigidity is big, anti-knock shock resistance Good, the good waterproof performance of property, to the adaptable of concave plane.
Description of the drawings
Fig. 1 is that reinforcing bar runs through the novel beam-to-column joint structural schematic diagram of cast-type concrete frame.
Specific implementation mode
A kind of reinforcing bar of present invention offer runs through the novel beam-to-column joint structure of cast-type concrete frame comprising cast in place frame The node of column and in-situ frame beam, reinforcing bar, cast-in-place concrete Vierendeel girder and concrete frame constructing in site, the cast in place frame column with Reinforcing bar in cast in place frame girder connection is extended, and node is extended through, and is mechanically connected in inflection point.
Traditional concrete frame node is that beam column reinforcing bar carries out binding connection in node, and the present invention is by conventional frame section Bar connecting at point removes node area, and reinforcing bar is extended, is attached outside node, so that joint reinforcing bar is arranged Simplicity makes concrete effectively pour, vibration compacting ensures the quality of bean column node in favor of construction.
The reinforcing bar of the joint area of bar connecting is using mechanical connection.Steel concrete supporting is by reinforcing bar and connector Mechanical snap acts on or the effect of the pressure-bearing of reinforcing bar end face, and the power in a reinforcing bar is transferred to the connection method of another reinforcing bar. It is end reinforced to have local buckling, must not there are serious corrosion and attachment.It is end reinforced to there is inspection to be inserted into mechanical connection institute The visible marking of skirt depth, steel bar end is from length sleeve central point no more than 10mm.Squeezing should be from sleeve center Start, is squeezed successively to both ends, the fluctuation range of impression diameter should control in the allowable fluctuation range that supplier assert, and carry It is checked for dedicated gauge.Sleeve after extruding must not have naked eyes visible crack.
Vierendeel girder longitudinal reinforcement jointing position:The top bars joint location being evenly arranged in cast-in-situ concrete beam exists Vierendeel girder is within the scope of 1/3 clear span of span centre, and lower layer's splice position is in frame beam-ends in 1/3 span scope of bearing.Stress Splice will mutually stagger, and out of any binding connector center to 1.3 times of the lap of splice, there is the reinforcing bar of binding connector Area accounts for the percentage of the steel bar stress gross area:Tensile region≤25%, compressive region≤50%.The jointing of steel concrete supporting Length should be calculated by 35d (d is bar diameter), when the different bar connecting of diameter, by the smaller calculating of diameter.Positioned at the company Connecing the area percentage of the reinforced bar mechanical connector in section should meet the following requirements:(1) connector is preferably arranged in structural elements Steel bar stress stress smaller part position, III level connector area percentage is not when connector is arranged in high stress position, in same jointing It should be greater than 25%, II grades of connector area percentages and should not exceed 50%.(2) connector preferably avoids the frame of requirements for fortification against earthquake Beam-ends, styletable hoop reinforcement;When that can not avoid, II grades of connectors or I grades of connectors should be used, and connector area percentage is not answered More than 50%.(3) steel bar stress stress smaller part position or longitudinal compressive reinforcement, connector area percentage can be unrestricted.(4) right The structural elements of reloading is directly born, connector area percentage should not exceed 50%.
Below more than column root (basic top surface, build-in face) and soffit >=500mm and >=Hn/6 (Hn is column clear height) and Hc (column section height) region is disconnected area, and belongs to styletable hoop reinforcement, and column joint should not be arranged within the scope of this.Such as steel Muscle is more, and bar connecting point can be respectively arranged in node both sides.
Below using embodiment and attached drawing come the embodiment that the present invention will be described in detail, how skill is applied to the present invention whereby Art means solve technical problem, and the realization process for reaching technique effect can fully understand and implement.
As shown in Figure 1, reinforcing bar provided by the invention runs through the novel beam-to-column joint structure of cast-type concrete frame, including it is existing Node, reinforcing bar 3, cast-in-place concrete Vierendeel girder 1 and the concrete frame constructing in site 2 of frame column and in-situ frame beam are poured, it is described existing It pours frame column with the reinforcing bar in cast in place frame girder connection to be extended, extends through node, mechanical connection 4 is carried out in inflection point.
All above-mentioned this intellectual properties of primarily implementation, there is no this new products of implementation of setting limitation other forms And/or new method.Those skilled in the art will utilize this important information, the above modification, to realize similar execution feelings Condition.But all modifications or transformation belong to the right of reservation based on new product of the present invention.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc. Imitate embodiment.But it is every without departing from technical solution of the present invention content, according to the technical essence of the invention to above example institute Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.

Claims (3)

1. a kind of reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame, it is characterised in that:Including cast in place frame column With node, reinforcing bar, cast-in-place concrete Vierendeel girder and the concrete frame constructing in site of in-situ frame beam, the cast in place frame column with it is existing The reinforcing bar poured in frame girder connection is extended, and node is extended through, and is mechanically connected in inflection point.
2. reinforcing bar as described in claim 1 runs through the novel beam-to-column joint structure of cast-type concrete frame, it is characterised in that:Steel The reinforcing bar of the joint area of muscle connection is using mechanical connection.
3. reinforcing bar as claimed in claim 1 or 2 runs through the novel beam-to-column joint structure of cast-type concrete frame, feature exists In:Vierendeel girder longitudinal reinforcement jointing position is located at the top bars joint location being evenly arranged in cast-in-situ concrete beam in frame It sets a roof beam in place within the scope of 1/3 clear span of span centre, lower layer's splice position is in frame beam-ends in 1/3 span scope of bearing.
CN201810212185.0A 2018-03-14 2018-03-14 Reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame Pending CN108385836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810212185.0A CN108385836A (en) 2018-03-14 2018-03-14 Reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810212185.0A CN108385836A (en) 2018-03-14 2018-03-14 Reinforcing bar runs through the novel beam-to-column joint structure of cast-type concrete frame

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CN108385836A true CN108385836A (en) 2018-08-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005330657A (en) * 2004-05-18 2005-12-02 Kurosawa Construction Co Ltd Joint structure of precast concrete column and beam
CN103074941A (en) * 2012-12-24 2013-05-01 北京工业大学 Assembly type recycled concrete node with steel bar truss girders at end parts and manufacturing method thereof
CN105804241A (en) * 2016-03-22 2016-07-27 哈尔滨工业大学 Single-layer prefabricated assembly type reinforced concrete beam-column joint
CN105839846A (en) * 2016-03-22 2016-08-10 哈尔滨工业大学 Prefabricated reinforced concrete composite beam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005330657A (en) * 2004-05-18 2005-12-02 Kurosawa Construction Co Ltd Joint structure of precast concrete column and beam
CN103074941A (en) * 2012-12-24 2013-05-01 北京工业大学 Assembly type recycled concrete node with steel bar truss girders at end parts and manufacturing method thereof
CN105804241A (en) * 2016-03-22 2016-07-27 哈尔滨工业大学 Single-layer prefabricated assembly type reinforced concrete beam-column joint
CN105839846A (en) * 2016-03-22 2016-08-10 哈尔滨工业大学 Prefabricated reinforced concrete composite beam

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Application publication date: 20180810