CN104481164A - Structural steel reinforcing method and structure of concrete frame node - Google Patents
Structural steel reinforcing method and structure of concrete frame node Download PDFInfo
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- CN104481164A CN104481164A CN201410680241.5A CN201410680241A CN104481164A CN 104481164 A CN104481164 A CN 104481164A CN 201410680241 A CN201410680241 A CN 201410680241A CN 104481164 A CN104481164 A CN 104481164A
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Abstract
The invention provides a structural steel reinforcing method and structure of a concrete frame node and belongs to the technical field of buildings. Beam-column reinforcing angle steel is arranged at the orthogonal positions between a column above a beam and a column under the beam and the beam, four corners of each column are reinforced by adopting column four-corner reinforcing angle steel, four pieces of beam-column reinforcing angle steel and four pieces of four-corner reinforcing angle steel of the upper column and the lower column are annularly wrapped by two column reinforcing channel steel hoops, the beam-column reinforcing angle steel and each concrete beam are annularly wrapped by two beam reinforcing channel steel hoops. The structural steel reinforcing method and structure have the advantages that working procedures can be decreased, construction is simplified, structural steel can be effectively utilized, and the stress performance of the concrete frame node can be remarkably improved.
Description
Technical field
The invention belongs to technical field of buildings, particularly relate to a kind of section steel reinforcement method and ruggedized construction of concrete frame node.
Background technology
Node is the hinge of frame construction power transmission, plays a part to transmit and distribute internal force, ensure globality.Under geological process, joint cores undergos very large horizontal shear, is generally about 4 ~ 6 times of pillar shearing, easily produces shear brittleness and destroys.In addition because the effect of cyclic reverse loading causes reinforcing bar Bond Degradation, there is Bar Anchorage and destroy, thus greatly reduce the intensity of node, rigidity and energy dissipation capacity.Node, once destroy, can make structure be in totally unfavorable stress, even cause collapsing of total.In order to avoid node destroys, using " the weak component of strong node " as design principles in Seismic Design of Reinforced Concrete Frame Structure prior to beam column component.When frame joint is due to design, construction wrong, or using function, environment for use change, or structural seismic are required to the reasons such as raisings cause Lack of support, and ductility, rigidity are inadequate, or during anti-seismic performance deficiency, need carry out reinforcement and strengthening to it.
To the seismic hardening of reinforced concrete frame structure in current engineering, normally strengthen beam cross-section or stick carbon fiber material etc. and increase beam column element bearing capacity, and seldom or be difficult to reinforce node, this reinforcement means to frame construction opposing " no collapsing with strong earthquake " almost without any effect.
Reinforcement method of enlarging section adopts the section area increasing concrete frame node, to improve a kind of reinforcement means of its bearing capacity.The method increase the shearing resistance sectional area of joint cores, thus improve shear strength and rigidity; Strengthen beam and indulge the anchoring of muscle in node area, can effectively avoid beam-ends to occur this brittle fracture form of fastening destruction.Under the prerequisite not affecting using function, it is very effective for carrying out reinforcing joint by enlarging section, but its major defect is: dabbing is all wanted in beam column surface, and wet trade is many, and strengthening construction difficulty is large.
Namely sticking carbon fiber reinforcing method is at concrete component paste outside carbon fibre material, to improve bearing capacity and to meet the normal reinforcement means used.Its obvious technical advantage is mainly reflected in: efficiently high-strength, make full use of FRP high strength, high-modulus feature to improve bearing capacity and the ductility of structure and component, improve its stress performance, decay resistance and durability; The stable chemical nature of FRP material, does not react with chemical substances such as acid-alkali salts, does not increase deadweight and the volume of component, constructability.
Related tests research shows, during sticking carbon fiber reinforcing joint, the effect of carbon fiber to joints performance is mainly manifested in following two aspects:
First, constrain the concrete horizontal volume expansion in joint cores, the restriction concrete cracking in joint cores and the further developing of crack, to core space concrete with circumferential pressure, indirectly improve concrete compressive strength.
Secondly, directly bear external load, participate in the shearing resistance of node, the restriction concrete shear strain in joint cores.The bar bond slip that the shear strain of node indulges muscle with beam is the same, and load-displacement hysteresis loop can be made to produce and pinch contracting, energy dissipation capacity reduces, and the displacement of structure is strengthened.Lot of experiments proves, in the relative storey displacement of reinforced concrete frame structure, the shear strain of node will account for 40% ~ 60%, therefore, no matter considers from power consumption or the angle of Reducing distortion, all should limit the shear strain of node.
Reinforcement by sticking of sheets is at the special construction structure glue affixing steel plate of component surface, to improve a kind of reinforcement means of structural bearing capacity.Adopt steel-bonded reinforcement bean column node, be namely pasted with bending resistance, the steel plate cut or angle steel, to improve the shear-carrying capacity of node area or to improve the stress performance of joint cores at the beam-ends of beam-column subassemblage node region, styletable or core space.
This reinforcement means has the following advantages: be reinforced component and substantially do not suffer a loss, and can give full play to the effect of original part; External debts model thickness is little, and after reinforcing, deadweight increases little; After reinforcing, the appearance and size change of component is little, less on building function impact.Meanwhile, dead burning plate is reinforced also exists following shortcoming: steel are for solving Anticorrosion Problems, and certain thickness surface layer should be made in surface, thus have also been changed sectional dimension of members, brings difficulty to finishing; Steel plate lapping and anchoring comparatively bothers, and engineering quantity is larger.Therefore the simple effective ways developing the reinforcing of concrete frame node reinforcement means are very necessary.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of section steel reinforcement method and ruggedized construction of concrete frame node, operation can not only be reduced, simplify construction, and effectively can utilize shaped steel, significantly promote the stress performance of concrete frame node.
The object of the invention is to be achieved through the following technical solutions:
The section steel reinforcement method of concrete frame node of the present invention, its concrete frame node is reinforced channel-section steel hoop, beam reinforcing channel-section steel hoop, post corner reinforcing angle, post reinforcing channel-section steel hoop crab-bolt, beam reinforcing channel-section steel hoop crab-bolt and joint cores formed by concrete beam, concrete column, beam-post reinforcing angle, post, first, post place orthogonal with beam on beam and under beam all arranges beam-post reinforcing angle, and the width a of beam-post reinforcing angle equals the width b of beam; The corner of post adopts post corner reinforcing angle to reinforce, the post of the upper end of post corner reinforcing angle and the upper prop of concrete column reinforces channel-section steel hoop top edge with high, the post of the lower prop of lower end and concrete column reinforces channel-section steel hoop lower limb with high, and centre encases 4 angles of the post of joint cores; The width a sum of the width c of 2 post corner reinforcing angles and beam-post reinforcing angle is the width w of concrete column;
Secondly, adopts 2 posts to reinforce channel-section steel hoops and 4 beams-post reinforcing angle of upper prop and lower prop and 4 corner reinforcing angle hoops are encased respectively, 2 seams employings that channel-section steel hoop reinforced by post are welded to connect; Concrete column and beam-between post reinforcing angle and corner reinforcing angle, and beam-post reinforcing angle and corner reinforcing angle and post are reinforced between channel-section steel hoop and adopted structure glue to cohere, and channel-section steel hoop reinforced by post by channel-section steel hoop crab-bolt, beam-post reinforcing angle corner reinforcing angle is connected with concrete column to adopt post to reinforce;
Finally, every root concrete beam all adopts 2 beams to reinforce channel-section steel hoop and beam-post reinforcing angle and concrete beam hoop is encased, and 2 seams of beam reinforcing channel-section steel hoop lay respectively at the centre of concrete beam top and bottom, and employing is welded to connect; Between concrete beam and beam-post reinforcing angle, and all adopt structure glue to cohere between beam-post reinforcing angle and beam reinforcing channel-section steel hoop, and adopt beam reinforcing channel-section steel hoop crab-bolt beam-post reinforcing angle to be connected with concrete beam with beam reinforcing channel-section steel hoop.
The section steel reinforcement structure of concrete frame node of the present invention, by concrete beam, concrete column, beam-post reinforcing angle, channel-section steel hoop reinforced by post, beam reinforces channel-section steel hoop, channel-section steel hoop crab-bolt reinforced by post corner reinforcing angle, post, beam reinforces channel-section steel hoop crab-bolt and joint cores forms, post place orthogonal with beam on beam and under beam all arranges beam-post reinforcing angle, and the width a of beam-post reinforcing angle equals the width b of beam; The corner of post is reinforced by post corner reinforcing angle, the post of the upper end of post corner reinforcing angle and the upper prop of concrete column reinforces channel-section steel hoop top edge with high, the post of the lower prop of lower end and concrete column reinforces channel-section steel hoop lower limb with high, is set in outside 4 angles of the post of joint cores; The width a sum of the width c of 2 post corner reinforcing angles and beam-post reinforcing angle is the width w of concrete column;
Reinforced 4 beams-post reinforcing angle and 4 corner reinforcing angles of channel-section steel hoop difference hoop suit upper prop and lower prop by 2 posts, post reinforces 2 seams of channel-section steel hoop for being welded to connect; Concrete column and beam-between post reinforcing angle and corner reinforcing angle, and beam-post reinforcing angle and corner reinforcing angle and post are reinforced for structure glue is cohered between channel-section steel hoop, and reinforced by post that post is reinforced channel-section steel hoop by channel-section steel hoop crab-bolt, beam-post reinforcing angle is connected with concrete column with corner reinforcing angle;
Every root concrete beam is all reinforced channel-section steel hoop by 2 beams and beam-post reinforcing angle and concrete beam hoop suit is fixed, and 2 seams of beam reinforcing channel-section steel hoop lay respectively at the centre of concrete beam top and bottom, and by being welded to connect; Between concrete beam and beam-post reinforcing angle, and beam-post reinforcing angle and beam are reinforced and are structure glue between channel-section steel hoop and cohere, and reinforce channel-section steel hoop crab-bolt by beam and beam-post reinforcing angle and beam are reinforced channel-section steel hoop be connected with concrete beam.
Beneficial effect of the present invention is:
Effect of the present invention and advantage to reduce operation, simplification construction, and effectively can utilize shaped steel, significantly promotes the stress performance of concrete frame node.
Accompanying drawing explanation
Fig. 1 is the floor map of the section steel reinforcement method of concrete frame node;
Fig. 2 is the elevational schematic view of the section steel reinforcement method of concrete frame node.
In figure, 1 is concrete beam; 2 is concrete column; 3 is beam-post reinforcing angle; 4 is post reinforcing channel-section steel hoop; 5 is beam reinforcing channel-section steel hoop; 6 is post corner reinforcing angle; 7 is post reinforcing channel-section steel hoop crab-bolt; 8 is beam reinforcing channel-section steel hoop crab-bolt; 9 is joint cores.
Detailed description of the invention
Below by embodiment and accompanying drawing, the invention will be further described.
Embodiment: section steel reinforcement structure and the reinforcement means of a kind of concrete frame node of the present invention are as follows: its ruggedized construction is reinforced channel-section steel hoop 4, beam reinforcing channel-section steel hoop 5, post corner reinforcing angle 6, post reinforcing channel-section steel hoop crab-bolt 7, beam reinforcing channel-section steel hoop crab-bolt 8 and joint cores 9 formed by concrete beam 1, concrete column 2, beam-post reinforcing angle 3, post, during construction, first, post place orthogonal with beam on beam and under beam all arranges beam-post reinforcing angle 3, and the width a of beam-post reinforcing angle 3 equals the width b of beam; The corner of post adopts post corner reinforcing angle 6 to reinforce, the post of the upper end of post corner reinforcing angle 6 and the upper prop of concrete column 2 reinforces channel-section steel hoop 4 top edge with high, the post of the lower prop of lower end and concrete column 2 reinforces channel-section steel hoop 4 lower limb with high, and centre encases 4 angles of the post of joint cores 9; The width a sum of the width c of 2 post corner reinforcing angles 6 and beam-post reinforcing angle 3 is the width w of concrete column 2;
Secondly, adopt 2 posts reinforcing channel-section steel hoops 4 to be set with 4 beams-post reinforcing angle 3 and 4 corner reinforcing angles 6 of upper prop and lower prop, encase with hoop, 2 seams employings that channel-section steel hoop 4 reinforced by post are welded to connect; Concrete column 2 and beam-between post reinforcing angle 3 and corner reinforcing angle 6, and beam-post reinforcing angle 3 and corner reinforcing angle 6 and post are reinforced between channel-section steel hoop 4 and adopted structure glue to cohere, and post is reinforced channel-section steel hoop 4 by channel-section steel hoop crab-bolt 7, beam-post reinforcing angle 3 is connected with concrete column 2 with corner reinforcing angle 6 to adopt post to reinforce;
Finally, every root concrete beam 1 all adopts 2 beams to reinforce channel-section steel hoop 5 and beam-post reinforcing angle 3 and concrete beam 1 hoop is encased, and 2 seams of beam reinforcing channel-section steel hoop 5 lay respectively at the centre of concrete beam 1 top and bottom, and employing is welded to connect; Between concrete beam 1 and beam-post reinforcing angle 3, and all adopt structure glue to cohere between beam-post reinforcing angle 3 and beam reinforcing channel-section steel hoop 5, and adopt beam reinforcing channel-section steel hoop crab-bolt 8 beam-post reinforcing angle 3 and beam reinforcing channel-section steel hoop 5 to be connected with concrete beam 1.
Claims (2)
1. the section steel reinforcement method of a concrete frame node, its concrete frame node is by concrete beam (1), concrete column (2), beam-post reinforcing angle (3), channel-section steel hoop (4) reinforced by post, beam reinforces channel-section steel hoop (5), post corner reinforcing angle (6), channel-section steel hoop crab-bolt (7) reinforced by post, beam reinforces channel-section steel hoop crab-bolt (8) and joint cores (9) composition, it is characterized in that: first, post place orthogonal with beam on beam and under beam all arranges beam-post reinforcing angle (3), the width a of beam-post reinforcing angle (3) equals the width b of beam, the corner of post adopts post corner reinforcing angle (6) to reinforce, the post of the upper end of post corner reinforcing angle (6) and the upper prop of concrete column (2) reinforces channel-section steel hoop (4) top edge with high, the post of the lower prop of lower end and concrete column (2) reinforces channel-section steel hoop (4) lower limb with high, and centre encases 4 angles of the post of joint cores (9), the width a sum of the width c of 2 post corners reinforcing angle (6) and beam-post reinforcing angle (3) is the width w of concrete column (2),
Secondly, adopt 2 posts to reinforce channel-section steel hoop (4) 4 beams-post reinforcing angle (3) of upper prop and lower prop and 4 corner reinforcing angle (6) hoops to be encased respectively, 2 seams employings that channel-section steel hoop (4) reinforced by post are welded to connect; Concrete column (2) and beam-between post reinforcing angle (3) and corner reinforcing angle (6), and beam-post reinforcing angle (3) and corner reinforcing angle (6) and post are reinforced between channel-section steel hoop (4) and adopted structure glue to cohere, and channel-section steel hoop (4) reinforced by post by channel-section steel hoop crab-bolt (7), beam-post reinforcing angle (3) is connected with concrete column (2) with corner reinforcing angle (6) to adopt post to reinforce;
Finally, every root concrete beam (1) all adopts 2 beams to reinforce channel-section steel hoop (5) and beam-post reinforcing angle (3) and concrete beam (1) hoop is encased, 2 seams of beam reinforcing channel-section steel hoop (5) lay respectively at the centre of concrete beam (1) top and bottom, and employing is welded to connect; Between concrete beam (1) and beam-post reinforcing angle (3), and all adopt structure glue to cohere between beam-post reinforcing angle (3) and beam reinforcing channel-section steel hoop (5), and beam reinforcing channel-section steel hoop crab-bolt (8) is adopted beam-post reinforcing angle (3) and beam reinforcing channel-section steel hoop (5) to be connected with concrete beam (1).
2. the section steel reinforcement structure of a concrete frame node, it is characterized in that: by concrete beam (1), concrete column (2), beam-post reinforcing angle (3), post reinforces channel-section steel hoop (4), beam reinforcing channel-section steel hoop (5), post corner reinforcing angle (6), channel-section steel hoop crab-bolt (7) reinforced by post, beam reinforcing channel-section steel hoop crab-bolt (8) and joint cores (9) forms, post place orthogonal with beam on beam and under beam all arranges beam-post reinforcing angle (3), and the width a of beam-post reinforcing angle (3) equals the width b of beam; The corner of post is reinforced by post corner reinforcing angle (6), the post of the upper end of post corner reinforcing angle (6) and the upper prop of concrete column (2) reinforces channel-section steel hoop (4) top edge with high, the post of the lower prop of lower end and concrete column (2) reinforces channel-section steel hoop (4) lower limb with high, is set in outside 4 angles of the post of joint cores (9); The width a sum of the width c of 2 post corners reinforcing angle (6) and beam-post reinforcing angle (3) is the width w of concrete column (2);
Reinforced 4 beams-post reinforcing angle (3) and 4 corner reinforcing angles (6) of channel-section steel hoop (4) difference hoop suit upper prop and lower prop by 2 posts, post reinforces 2 seams of channel-section steel hoop (4) for being welded to connect; Concrete column (2) and beam-between post reinforcing angle (3) and corner reinforcing angle (6), and beam-post reinforcing angle (3) and corner reinforcing angle (6) and post are reinforced for structure glue is cohered between channel-section steel hoop (4), and reinforced by post that post is reinforced channel-section steel hoop (4) by channel-section steel hoop crab-bolt (7), beam-post reinforcing angle (3) is connected with concrete column (2) with corner reinforcing angle (6);
Every root concrete beam (1) is all reinforced channel-section steel hoop (5) by 2 beams and beam-post reinforcing angle (3) and concrete beam (1) hoop suit is fixed, 2 seams of beam reinforcing channel-section steel hoop (5) lay respectively at the centre of concrete beam (1) top and bottom, and by being welded to connect; Between concrete beam (1) and beam-post reinforcing angle (3), and beam-post reinforcing angle (3) and beam are reinforced and be structure glue between channel-section steel hoop (5) and cohere, and reinforce channel-section steel hoop crab-bolt (8) by beam beam-post reinforcing angle (3) and beam reinforcing channel-section steel hoop (5) are connected with concrete beam (1).
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| CN201410680241.5A CN104481164B (en) | 2014-11-24 | 2014-11-24 | The section steel reinforcement method of concrete frame node and add fixing structure |
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| CN201410680241.5A CN104481164B (en) | 2014-11-24 | 2014-11-24 | The section steel reinforcement method of concrete frame node and add fixing structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895345A (en) * | 2015-06-07 | 2015-09-09 | 长安大学 | Building continuous-collapse-resistant reinforcing system and method based on FRP cloth materials |
| CN109113262A (en) * | 2017-01-03 | 2019-01-01 | 郑瑞平 | A kind of construction method for reinforcing steel structure girder or column |
| CN109723151A (en) * | 2019-02-27 | 2019-05-07 | 南京林业大学 | A kind of more high-rise wood/bamboo frame structure bean column nodes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104895345A (en) * | 2015-06-07 | 2015-09-09 | 长安大学 | Building continuous-collapse-resistant reinforcing system and method based on FRP cloth materials |
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| CN109723151A (en) * | 2019-02-27 | 2019-05-07 | 南京林业大学 | A kind of more high-rise wood/bamboo frame structure bean column nodes |
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| CN104481164B (en) | 2016-06-01 |
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