CN104727441B - Prestress assembled concrete beam column joint structure and construction method thereof - Google Patents

Prestress assembled concrete beam column joint structure and construction method thereof Download PDF

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Publication number
CN104727441B
CN104727441B CN201510147361.3A CN201510147361A CN104727441B CN 104727441 B CN104727441 B CN 104727441B CN 201510147361 A CN201510147361 A CN 201510147361A CN 104727441 B CN104727441 B CN 104727441B
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China
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joint
column
prestressed reinforced
prefabricated
construction
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CN201510147361.3A
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Chinese (zh)
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CN104727441A (en
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蒲武川
陈向
谷倩
梁瑞军
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武汉理工大学
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Abstract

The invention relates to a prestress assembled concrete beam column joint structure and a construction method thereof. The prestress assembled concrete beam column joint structure comprises a prefabricated column and a prefabricated beam. The prefabricated beam and the prefabricated column are in prepressing connection through the prestress formed by tensioning prestressed reinforced steel bars. The bottom of the beam end on one side of a joint is connected with the top of the beam end on the other side of the joint through the prestressed reinforced steel bars, and the prestressed reinforced steel bars are symmetrically crossed on a vertical face. When the prefabricated beam is manufactured, the prestressed reinforced steel bars and anchoring parts of the prestressed reinforced steel bars are pre-buried at the bottom of the beam end, prestressed reinforced steel bar pore channels and an anchoring area are reserved in the top of the beam end, and open type stirrups are adopted in the anchoring area. A force transmission steel plate is arranged on the cross section part of the beam end by the way that the cross section part of the beam end is welded with longitudinal bars. Slant prestressed reinforced steel bar pore channels are reserved in a prefabricated column joint area, groove-shaped steel plates are pre-buried on the two sides of the joint of the column, and high damping rubber layers are attached to the insides of the groove-shaped steel plates. In the connecting process, the beam is clamped into channel steel, and the prestressed reinforced steel bars penetrate through a joint core area to the top of the beam end on the other side of the joint and are anchored after being tensioned to be at the designed stress. According to the prestress assembled concrete beam column joint structure and the construction method thereof, assembling construction is convenient, and high shear-bearing capacity, energy-dissipating capacity and self-resetting capacity of the connecting joint can be achieved.

Description

A kind of prestressing force assembly concrete bean column node construction and its construction method

Technical field

The present invention relates to a kind of prestressing force assembly concrete bean column node construction of building field and its construction method.

Background technology

After prefabricated concrete structure refers to that main supporting member such as beam, post, body of wall etc. of structural system is pre-formed, fortune Transport to the structural system of assemble in site.Prefabricated concrete structure is affected little etc. due to its energy-saving and environmental protection, by construction environment Advantage is just obtaining rapid popularization and application.For from the mechanical property of structure, the key issue of fabricated construction is connection The reliability of node, conventional structure earthquake show that the main cause of most fabricated construction failures is that the connection of bean column node is broken The bad failure for causing structural system.

Prestress prepressing connection is the main node type of attachment of a class of fabricated construction.Connection section is pre- by beam column The frictional force that pressure is produced carrys out shearing resistance, and presstressed reinforcing steel then can be used for connecting the bending resistance in section.The frame structure beam column for adopting at present Prestressing force connection in, deformed bar generally along the elongated arrangement of beam, in order to ensure sufficient bonding strength, it is considered to prestressing force damage The factors such as mistake, the tension stress requirement of deformed bar are higher, or require using more deformed bar.This was to installing Journey proposes higher requirement.How to make by rational design that connection section has higher-strength and easy construction is prestressing force One of key issue of connection.

Experimentation showed that prestressing force assembling type node showed the mechanical property of nonlinear elasticity in the past, had higher Recoverable force ability, but its energy dissipation capacity is weaker, easily produces moderate finite deformation under geological process.Therefore, by rational section Point design ensures that fabricated construction has certain energy dissipation capacity to improving the overall anti-seismic performance of fabricated construction with positive Effect.

The content of the invention

The technical problem to be solved in the present invention is, builds a kind of assembling easy construction, with higher shear resistance, consumption Prestressing force assembly concrete bean column node and its construction method of energy ability and self-resetting capability.

The technical solution adopted for the present invention to solve the technical problems is:Construct a kind of prestressing force assembly concrete beam column Joint structure, including prefabricated post, precast beam and presstressed reinforcing steel, buries channel-section steel, the groove of both sides in the node both sides of the prefabricated post Steel is connected by the reinforcement welding through joint cores, pastes high-damping rubber layer, the end of the precast beam in the groove of channel-section steel The precast beam is snapped in during connection in the groove of the channel-section steel, node both sides by portion by presetting end steel plate with the welding of vertical muscle Precast beam by being connected by the deformed bar of joint cores, the oblique straight line of deformed bar connects side precast beam At the top of bottom and opposite side precast beam, arrange in X-shaped on facade.

In such scheme, the deformed bar is only arranged in beam end, more than tri- Dao Huo of Qie Fen, tri- roads is arranged, from both sides Beam-ends bottom is arranged symmetrically along both direction at the top of opposite side beam-ends, and the vertical component that prestressing force is made a concerted effort in both direction is put down Weighing apparatus.

In such scheme, the prefabricated Column border node both sides are provided with the channel-section steel for improving the shear resistance in connection section Plate.

In such scheme, the high-damping rubber for improving energy dissipation capacity of the node in deformation in the troughing plate, is provided with Glue-line.

Present invention also offers a kind of construction method of prestressing force assembly concrete bean column node construction, including following step Suddenly:

S1, making precast beam:The vertical muscle of arrangement beam and stirrup, pre-buried presstressed reinforcing steel on the downside of beam-ends, the connection of presstressed reinforcing steel end Anchoring piece, on the upside of beam-ends, pre-buried pore-forming material forms presstressed reinforcing steel duct, and reserved presstressed reinforcing steel anchorage zone, the vertical muscle end of beam with Steel plate is welded, and after the completion of steel bar arrangement, formwork cast concrete, maintenance reach design strength;

S2, making prefabricated post:The vertical muscle of post and stirrup are arranged in place, by the troughing plate for being pasted with rubber layer of both sides By reinforcement welding together, reinforcing bar passes through node district;In the reserved presstressed reinforcing steel duct of node district arrangement pore-forming material, formwork is poured Note concrete is simultaneously conserved;

S3, by precast beam, prefabricated post lift in place, by deformed bar through Column border node core space, through another curb girder End upside presstressed reinforcing steel duct, beam-ends steel plate is snapped in troughing plate, and prestressed reinforcement of tensioning is to design stress and anchors, in advance Stress reinforcing bar is arranged in X-shaped on facade;By anchorage zone open type stirrup colligation sealing, the smooth beam upper table of cast concrete Face.

Implement prestressing force assembly concrete bean column node construction and its construction method of the present invention, with following beneficial effect Really:

1st, deformed bar is arranged in X-shaped, and structure under horizontal loads, divide by the beam-ends moment of flexure antisymmetry of post both sides Cloth, by being connected by same presstressed reinforcing steel, this presstressed reinforcing steel elongation is big for both sides beam-ends tensile region, can produce higher stress and increase It is long, so as to form the higher automatic recovery ability of column joints deformation.

2nd, under Moment, beam column can relatively rotate at node, and the high-damping rubber being arranged between beam column can received Area and pressurized interval conversion is drawn, tension and compression, so as to produce power consumption effect, are played lift structure damping ratio, reduce knot repeatedly to make rubber layer The effect of structure dynamic response.

3rd, the beam-ends after the completion of assembling should be snapped in troughing plate, and troughing plate flange plate can undertake section shearing.

4th, the beam-ends on deformed bar only connecting pole both sides, deformed bar arrangement length is short, and straight line, prestressing force Loss is low, it is easy to construct.

5th, the steel plate of troughing plate and beam-ends can make the power transmission of beam column surface evenly, and the pressurized local for reducing concrete is broken Bad probability.

6th, when the prestressing force is assembled, concrete beam and column node construction boundary of works area is little, and constructing operation is convenient.

Description of the drawings

Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:

Fig. 1 is the schematic diagram of the facade that the bean column node of the present invention is constituted;

Fig. 2 is the schematic diagram of the plane that the bean column node of the present invention is constituted;

Fig. 3 is the schematic diagram of the precast beam of the present invention;

Fig. 4 is the open type stirrup schematic diagram that beam-ends top anchor area adopts.

Specific embodiment

In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now compare accompanying drawing and describe in detail The specific embodiment of the present invention.

As shown in Figure 1-Figure 3, prestressing force assembly concrete bean column node of the invention construction includes insertion node district Prefabricated post 1, the precast beam 2 for being arranged in node both sides, deformed bar 9, with precast beam 2 is whole pour together with beam-ends steel plate 4, logical Cross reinforcing bar 8 be welded to connect and with post is whole pour together with the troughing plate 5 of node both sides, high-damping rubber floor 6, stretch-draw anchor area Late poured band 7.

The embedded channel-section steel 5 in node both sides that prefabricated post 1 is connected with precast beam 2, the channel-section steel 5 of both sides is by through joint cores Reinforcing bar 8 be welded to connect, paste high-damping rubber 6 in the groove of channel-section steel 5, the end of precast beam 2 is provided with end steel plate 4, prefabricated The vertical muscle of the beam-ends of beam 2 is overhanging and is welded on end steel plate 4, and end steel plate 4 is snapped in the groove of channel-section steel 5, node both sides it is pre- By being connected by the deformed bar 9 of joint cores, 9 oblique straight line of deformed bar connects side precast beam 2 to beam processed 2 At the top of bottom and opposite side precast beam 2, arrange in X-shaped on facade.

Pre-buried one or twice presstressed reinforcing steel 9 on the downside of 2 beam-ends of precast beam, in the present embodiment, 9 point of three road cloth of deformed bar Put, middle one is middle presstressed reinforcing steel with side twice presstressed reinforcing steel reversed arrangement, side twice pre-stress rib stretching force The half of pulling force.9 end connection anchoring element of presstressed reinforcing steel, is provided with presstressed reinforcing steel duct 3 and anchorage zone on the upside of 2 beam-ends of precast beam, Using open type stirrup in order to presstressed reinforcing steel anchoring construction in anchorage zone, as shown in Figure 4.

The present invention also provides a kind of construction method of above-mentioned joint structure, comprises the following steps:

When S1, precast beam, the vertical muscle of beam and stirrup press general concrete Structural Design Requirement arrangement.Pre-buried one on the downside of beam-ends Or twice deformed bar 9, presstressed reinforcing steel end connection anchoring element.On the upside of beam-ends, pre-buried pore-forming material forms presstressed reinforcing steel duct 3, and reserved presstressed reinforcing steel anchorage zone.Anchorage zone stirrup adopts open type stirrup (Fig. 4), beam-ends steel plate 4 and the vertical muscle welding of beam.Institute After the completion of having steel bar arrangement, formwork cast concrete, maintenance reach design strength.

When S2, prefabricated post, before cast concrete, the vertical muscle of post and stirrup are arranged in place, both sides are pasted with into rubber The troughing plate 5 of layer 6 is welded together by reinforcing bar 8, and reinforcing bar 8 passes through joint cores.In joint cores according to prestressing force The design attitude of reinforcing bar 9 arranges pore-forming material to form presstressed reinforcing steel duct, and then formwork is poured into a mould concrete and conserved.

S3, post and it is beam prefabricated after the completion of, carry out assembled connection in building site.Beam, post are lifted in place, by beam-ends presstressed reinforcing steel Through Column border node core space, through presstressed reinforcing steel duct at the top of opposite side beam-ends, beam is snapped in troughing plate.Distinguish in both sides Prestressed reinforcement of tensioning is to design stress, and anchors.9 point of three road of deformed bar arrangement in Fig. 3, it is middle together with side twice Presstressed reinforcing steel reversed arrangement, side twice pre-stress rib stretching force are the half of middle pre-stress rib stretching force.Can so ensure The vertical component balance made a concerted effort of the presstressed reinforcing steel of both direction, it is to avoid produce additional plane Moments in beam.Prestress steel After the completion of muscle is all anchored, by anchorage zone U-stirrups colligation sealing, and the smooth beam of anchorage zone cast concrete on the upside of the beam-ends Upper surface.

Embodiments of the invention are described above in conjunction with accompanying drawing, but be the invention is not limited in above-mentioned concrete Embodiment, above-mentioned specific embodiment are only schematic, rather than restricted, one of ordinary skill in the art Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, can also make a lot Form, these are belonged within the protection of the present invention.

Claims (1)

1. the construction method that a kind of prestressing force assembly concrete bean column node is constructed, it is characterised in that comprise the following steps:
S1, making precast beam:The vertical muscle of arrangement beam and stirrup, pre-buried deformed bar on the downside of beam-ends, the connection of deformed bar end Anchoring piece, on the upside of beam-ends, pre-buried pore-forming material forms presstressed reinforcing steel duct, and reserved deformed bar anchorage zone, the vertical muscle welding of beam Beam-ends steel plate, after the completion of steel bar arrangement, formwork cast concrete, maintenance reach design strength;
S2, making prefabricated post:The vertical muscle of post and stirrup are arranged in place, the troughing plate for being pasted with rubber layer of both sides is passed through Together, reinforcing bar passes through joint cores to reinforcement welding;The reserved presstressed reinforcing steel duct of arrangement pore-forming material in joint cores, Mould is poured into a mould concrete and is conserved;
S3, Jiang Liang, post are lifted in place, by deformed bar through Column border node core space, through prestressing force on the upside of opposite side beam-ends Muscle duct, beam-ends steel plate is snapped in troughing plate, and prestressed reinforcement of tensioning is to design stress and anchors, and deformed bar is vertical Arrange in X-shaped on face;By anchorage zone open type stirrup colligation sealing, the smooth beam upper surface of cast concrete.
CN201510147361.3A 2015-03-31 2015-03-31 Prestress assembled concrete beam column joint structure and construction method thereof CN104727441B (en)

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Publication number Priority date Publication date Assignee Title
CN106285035A (en) * 2016-08-31 2017-01-04 西安长庆科技工程有限责任公司 A kind of method of prefabricated assembled reorganization and expansion building structure node and structure node thereof
CN107653985B (en) * 2017-10-21 2019-05-07 山东建筑大学 A kind of assembled abnormity column connected node and its installation method
CN108755975B (en) * 2018-07-13 2020-08-21 大连理工大学 Replaceable self-resetting assembly type connecting node and construction method
CN109629675A (en) * 2019-01-15 2019-04-16 江苏中谊抗震工程股份有限公司 A kind of assembled beam-column lead extrusion pressing type energy dissipation node
CN110952657A (en) * 2020-02-17 2020-04-03 南京工程学院 Beam-column joint connecting device of assembled reinforced concrete frame

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CN2697175Y (en) * 2004-03-17 2005-05-04 广州大学 Semi-feed through type bracket steel pipe concrete pile single beam node
CN100353016C (en) * 2005-12-28 2007-12-05 北京工业大学 Square section concrete short pillar hiden with 'slant strength nucleocenter beam' and mfg. method thereof
CN103397787B (en) * 2013-07-26 2016-05-04 河海大学 The two-way X intersection of a kind of reinforced column underpinning technique
CN103741817A (en) * 2013-12-31 2014-04-23 天津大学 Enhancement method of X-shaped reinforcing bars for improving seismic resistance of special-shaped column nodes
CN103938730A (en) * 2014-04-14 2014-07-23 北京工业大学 Combination node for connecting concrete beam with round steel tube concrete column through unbonded prestressed ribs and ordinary steel bars

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