CN101845850A - Stiff concrete frame structure and construction method thereof - Google Patents
Stiff concrete frame structure and construction method thereof Download PDFInfo
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- CN101845850A CN101845850A CN 201010205823 CN201010205823A CN101845850A CN 101845850 A CN101845850 A CN 101845850A CN 201010205823 CN201010205823 CN 201010205823 CN 201010205823 A CN201010205823 A CN 201010205823A CN 101845850 A CN101845850 A CN 101845850A
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- 238000010276 construction Methods 0.000 title claims description 10
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 210000002435 tendon Anatomy 0.000 claims description 86
- 230000003014 reinforcing effect Effects 0.000 claims description 78
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- 238000005728 strengthening Methods 0.000 claims description 15
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- 244000046052 Phaseolus vulgaris Species 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 10
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a stiff concrete frame structure, wherein a frame column is cast by a core column steel rib and a peripheral column reinforced concrete structure into a whole, concrete is cast in the core column steel rib, and studs vertical to a steel rib surface are distributed on the periphery of the core column steel rib and embedded and fixed in the column reinforced concrete structure through the studs; the steel bars of the column reinforced concrete structure comprise vertical bars, column stirrups and draw hooks, beam main bars at the upper parts of beam-column joints are divided into penetrating beam main bars and column-beam-winding main bars, and when the column-beam-winding main bars at the upper parts of the beam-column joints wind core column steel ribs in the frame columns, the column-beam-winding main bars are outwards bent according to the gradient of 1: 6; the upper beam main reinforcement penetrates through a preformed hole on the core column steel rib in the frame column, and the end part of the lower beam main reinforcement is anchored into the column reinforced concrete structure or is bent upwards. The invention solves the problems that the steel bars in the beam-column joint area of the steel rib-concrete structure are difficult to penetrate through the steel ribs of the core column, the concrete is inconvenient to pour and vibrate, and the pouring effect is poor, and can be widely applied to large-span multi-story high-rise frame structures.
Description
Technical field
The present invention relates to a kind of strengthening concrete frame structure and job practices thereof.
Background technology
The form of structure that current architecture configuration adopts usually is steel work or reinforced concrete structure, steel work exists steel using amount big, fire line is poor, shortcomings such as maintenance cost height, build for many high-rise long spans degree, because relative reinforced concrete member cross section, steel structure member cross section is less than normal, the structural entity stable problem is outstanding, and the structure of reinforced concrete workload is big, especially to many high-level structures, the structural element cross section is bigger than normal, cause dead load big, ground is had relatively high expectations, steel-concrete structure is except the advantage that steel work is arranged, the advantage that also possesses concrete structure, structure has excellent fireproof performance simultaneously.Be that many high-rise long spans degree is built structural form selection preferably, but, because the existence of reinforcing bar, the muscle problem of wearing of bean column node district reinforcing bar and the concrete blanking of steel concrete district and vibrate and become the obstacle of widespread adoption steel-concrete structure, the present invention aims to provide and solves bean column node district reinforcing bar and pass reinforcing bar, and the outside steel concrete technical scheme of building.
Summary of the invention
The purpose of this invention is to provide a kind of strengthening concrete frame structure and job practices thereof, solve the technical problem that the steel-concrete structure node area is passed the stem stem reinforcing bar; And the solution technical problem that steel-the concrete structure peripheral concrete is built.
For achieving the above object, the present invention adopts following technical scheme: a kind of strengthening concrete frame structure, form by frame column and Vierendeel girder, Vierendeel girder is a reinforced concrete beam, described reinforcing bar comprises beam main tendon and beam stirrup, beam main tendon comprises elongated muscle and non-elongated muscle, Vierendeel girder is connected the side or the top of frame column, be erected with floor on the Vierendeel girder, floor and Vierendeel girder are cast as one, and described frame column is built by stem stem reinforcing bar and peripheral post reinforced concrete structure and is one to be cast with concrete in the stem stem reinforcing bar, the periphery of stem stem reinforcing bar is furnished with the peg perpendicular to the reinforcing bar face, and passes through the peg build-in in the post reinforced concrete structure; The reinforcing bar of described post reinforced concrete structure comprises stud, tie muscle and drag hook, the beam main tendon on top, bean column node place is divided into and runs through beam main tendon and around the post beam main tendon, top when the post beam main tendon is walked around stem stem reinforcing bar in the frame column, outwards bend around the gradient of post beam main tendon by 1: 6; The beam main tendon that runs through on top passes preformed hole on the stem stem reinforcing bar in the frame column, and the end of the beam main tendon of bottom anchors in the post reinforced concrete structure or upwards bending.
Described frame column is insulated column or responde, and described stem stem reinforcing bar is square steel pipe or round steel pipe.
The concrete of described post reinforced concrete structure is a self-compaction without vibration concrete, and the concrete coarse aggregate maximum particle diameter is less than 1/3 of the steel reinforced concrete topping, and is not more than 25mm.
Described tie muscle is encrypted along the frame column overall height, and described drag hook is around stem stem reinforcing bar circumferential distribution, and drawknot is on stud.
The body of wall horizontal reinforcement of described responde is around disconnecting to the side of responde, and with responde in the two-sided welding of reinforcing bar.
The beam main tendon on the top, bearing place of described Vierendeel girder is a row, two row or three rows.
When the beam main tendon on the top, bearing place of described Vierendeel girder or the beam main tendon of bottom were two rows, the non-elongated muscle of close beam center line distributed in beam center line bilateral symmetry.
Described frame column side is connected with stiffening plate or does not have, and its width is during greater than the breadth of section of Vierendeel girder, and the end haunch of Vierendeel girder is a haunched beam, and the beam main tendon in the haunched beam outside is walked around stud.
Construction sequence is as follows: step 1, the stone bolt that the preburied frame trestle is connected with patten.
Step 14, the off line reinforcing bar of colligation floor and floor online reinforcing bar.
Step 15, pouring frame beam and floorslab concrete.
Compared with prior art the present invention has following characteristics and beneficial effect: at first, frame column of the present invention adopts the strengthening concrete structure except the advantage that steel work is arranged, and also possesses the advantage of concrete structure, and structure has excellent fireproof performance simultaneously.
Secondly, the beam main tendon of the present invention by top, bean column node place is divided into and runs through beam main tendon and around the post beam main tendon, top when the post beam main tendon is walked around stem stem reinforcing bar in the frame column, outwards bend around the gradient of post beam main tendon by 1: 6; The beam main tendon that runs through on top passes preformed hole on the stem stem reinforcing bar in the frame column, the end of the beam main tendon of bottom anchor in the post reinforced concrete structure or upwards bending wait measure to solve the muscle problem of wearing of how rationally to wear bean column node district reinforcing bar, to guarantee good stress performance of node and quickening speed of application.Solve stiffness post bean column node reinforcing bar binding problem effectively, accelerated construction speed, reduced the waste of reinforcing bar again.
Secondly, the concrete of frame column of the present invention adopts self-compaction without vibration concrete, both solved the problem of concrete blanking difficulty, improved construction speed again, simultaneously without vibration technology has been guaranteed again that steel column does not touch because of external force and has been offset, and Surface Quality of Concrete has reached the effect of clear-water concrete.
The present invention has overcome the shortcoming of traditional structure form fireproof performance difference, has solved the technical problem that the steel-concrete structure node area is passed reinforcing bar; And the solution technical problem that steel-the concrete structure peripheral concrete is built.
The present invention can be widely used in large span multi-rise building structure.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is that reinforcing bar of the present invention is the insulated column structural representation of box.
Fig. 2 is the insulated column structural representation of reinforcing bar of the present invention for annular.
Fig. 3 is insulated column and the Vierendeel girder node area schematic diagram of reinforcing bar of the present invention for annular.
Fig. 4 is that reinforcing bar of the present invention is the insulated column and the Vierendeel girder node area schematic diagram of box.
Fig. 5 is a responde structural representation of the present invention.
Fig. 6 is that the present invention has stiffening plate frame column and Vierendeel girder node area schematic diagram.
Reference numeral: 1-stem stem reinforcing bar, 2-peg, 3-post reinforced concrete structure, 4-stud, 5-tie muscle, 6-drag hook, 7-beam main tendon, 7.1-run through beam main tendon, 7.2-adds girt strip, 9-Vierendeel girder, 10-stiffening plate, 11-insulated column, 12-responde, 13-body of wall horizontal bar around post beam main tendon, 8-.
The specific embodiment
Embodiment is referring to Fig. 1～shown in Figure 6, certain engineering B1 layer is a structural transition layer, adopt strengthening concrete frame structure, form by frame column and Vierendeel girder 9, Vierendeel girder 9 is a reinforced concrete beam, described reinforcing bar comprises beam main tendon 7 and beam stirrup, beam main tendon 7 comprises elongated muscle and non-elongated muscle, Vierendeel girder 9 is connected the side or the top of frame column, be erected with floor on the Vierendeel girder 9, floor and Vierendeel girder 9 are cast as one, described frame column is built by stem stem reinforcing bar and peripheral post reinforced concrete structure and is one, be cast with concrete in the stem stem reinforcing bar 1, the periphery of stem stem reinforcing bar 1 is furnished with the peg 2 perpendicular to the reinforcing bar face, and passes through peg 2 build-ins in post reinforced concrete structure 3; The reinforcing bar of described post reinforced concrete structure 3 comprises stud 4, tie muscle 5 and drag hook 6, the beam main tendon 7 on top, bean column node place is divided into and runs through beam main tendon 7.1 and around post beam main tendon 7.2, top when post beam main tendon 7.2 is walked around stem stem reinforcing bar 1 in the frame column, outwards bend around the gradient of post beam main tendon 7.2 by 1: 6; The beam main tendon 7.1 that runs through on top passes preformed hole on the stem stem reinforcing bar 1 in the frame column, and the end of the beam main tendon 7 of bottom anchors in the post reinforced concrete structure 3 or upwards bending.Described frame column is insulated column 11 or responde 12, and described stem stem reinforcing bar 1 is square steel pipe or round steel pipe.The concrete of described post reinforced concrete structure 3 is a self-compaction without vibration concrete, and the concrete coarse aggregate maximum particle diameter is less than 1/3 of the steel reinforced concrete topping, and is not more than 25mm.Described tie muscle 5 is encrypted along the frame column overall height, and described drag hook 6 is around stem stem reinforcing bar 1 circumferential distribution, and drawknot is on stud 4.The body of wall horizontal reinforcement 13 of described responde 12 is around disconnecting to the side of responde 12, and with responde in reinforcing bar 1 two-sided welding.The beam main tendon 7 on the top, bearing place of described Vierendeel girder 9 is a row, two row or three rows.When the beam main tendon 7 on described top was a row, non-elongated muscle was Ln/4 from frame column, Vierendeel girder 9 or the outer peripheral development length of body of wall; When the beam main tendon 7 on top is two rows, going up most the non-elongated muscle of a row is higher value among Ln/3 and the Ln/4+La from frame column, Vierendeel girder 9 or the outer peripheral development length of body of wall, and second to arrange non-elongated muscle be Ln/4 from frame column, Vierendeel girder 9 or the outer peripheral development length of body of wall; When the beam main tendon 7 on top is three rows, the non-elongated muscle of the 3rd row is Ln/4 from frame column, Vierendeel girder 9 or the outer peripheral development length of body of wall, the non-elongated muscle of second row is a higher value among Ln/3 and the Ln/4+La from frame column, Vierendeel girder 9 or the outer peripheral development length of body of wall, going up most the non-elongated muscle of a row is higher value among Ln/3+La and the Ln/4+2La from frame column, Vierendeel girder 9 or the outer peripheral development length of body of wall, and specifically following the example of by the reinforced concrete construction standard of Ln and La got.When the beam main tendon 7 on the top, bearing place of described Vierendeel girder 9 or the beam main tendon 7 of bottom were two rows, the non-elongated muscle of close beam center line distributed in beam center line bilateral symmetry.Described frame column side is connected with stiffening plate 10 or does not have, and its width is during greater than the breadth of section of Vierendeel girder 9, and the end haunch of Vierendeel girder 9 is a haunched beam 8, and the beam main tendon 7 in haunched beam 8 outsides is walked around stud 4.
The sectional dimension of frame column is 1100 * 1100,900 * 900mm etc.; the strength grade of stem stem reinforcing bar-composite steel concrete column is C40; adopt self-compaction without vibration pea gravel concreten, the concrete coarse aggregate maximum particle diameter should be less than 1/3 of steel reinforced concrete topping, and should not be greater than 25mm.It is 25,28,32 and the reinforcing bar of 12,16 that stud adopts diameter, and stirrup and drag hook adopt 14@100(conversion layer tie muscle overall height to encrypt).
Vierendeel girder adopts the C30 concrete, and beam section is of a size of 1000 * 950,500 * 950,400 * 600,400 * 700 etc., and it is 18,20,22,25,28,32 or 12,14,16 or 8,10 that reinforcing bar adopts diameter.
Beam main tendon passes or walks around the stem stem reinforcing bar of frame column in the Vierendeel girder.
At the heavy in section Vierendeel girder, as 1000 * 950mm, no more than 10 of the every row of upper and lower beam main tendon, reinforcing bar is walked around in 4 in the outside, and middle 6 are passed reinforcing bar.
400 * 950mm Vierendeel girder, no more than 5 of the every row of upper and lower beam main tendon, 2 haunches in the outside are walked around the stem stem reinforcing bar, and 3 are passed the stem stem reinforcing bar.
The body of wall horizontal reinforcement 13 of responde 12 is around disconnecting to the side of responde 12, and with responde in reinforcing bar 1 two-sided welding 5d, d is the diameter of body of wall horizontal reinforcement 13.
Concrete construction sequence of the present invention is as follows: step 1, the stone bolt that the preburied frame trestle is connected with patten.
Step 14, the off line reinforcing bar of colligation floor and floor online reinforcing bar.
Step 15, pouring frame beam 9 and floorslab concrete.
In addition, the steel bar stress in the engineering adopts HPB235 level, HRB335 and HRB400 level steel, because the HRB335 level is identical with the outward appearance of HRB400 level steel, the mark of difference is not obvious.Therefore in construction, take strict effectively control measures, HRB335 and the former material of HRB400 level steel and semiproduct subregion are stacked, in order to avoid produce the phenomenon that HRB335 level and HRB400 level are used with in construction, guarantee construction quality.
Claims (9)
1. strengthening concrete frame structure, form by frame column and Vierendeel girder (9), Vierendeel girder (9) is a reinforced concrete beam, described reinforcing bar comprises beam main tendon (7) and beam stirrup, beam main tendon (7) comprises elongated muscle and non-elongated muscle, Vierendeel girder (9) is connected the side or the top of frame column, Vierendeel girder is erected with floor on (9), floor and Vierendeel girder (9) are cast as one, it is characterized in that: described frame column is built by stem stem reinforcing bar and peripheral post reinforced concrete structure and is one, the stem stem reinforcing bar is cast with concrete in (1), the periphery of stem stem reinforcing bar (1) is furnished with the peg (2) perpendicular to the reinforcing bar face, and passes through peg (2) build-in in post reinforced concrete structure (3); The reinforcing bar of described post reinforced concrete structure (3) comprises stud (4), tie muscle (5) and drag hook (6), the beam main tendon (7) on top, bean column node place is divided into and runs through beam main tendon (7.1) and around post beam main tendon (7.2), top when post beam main tendon (7.2) is walked around stem stem reinforcing bar (1) in the frame column, outwards bend around the gradient of post beam main tendon (7.2) by 1: 6; The beam main tendon (7.1) that runs through on top passes preformed hole on the stem stem reinforcing bar (1) in the frame column, and the end of the beam main tendon of bottom (7) anchors in the post reinforced concrete structure (3) or upwards bending.
2. strengthening concrete frame structure according to claim 1 is characterized in that: described frame column is insulated column (11) or responde (12), and described stem stem reinforcing bar (1) is square steel pipe or round steel pipe.
3. strengthening concrete frame structure according to claim 1; it is characterized in that: the concrete of described post reinforced concrete structure (3) is a self-compaction without vibration concrete; the concrete coarse aggregate maximum particle diameter is less than 1/3 of the steel reinforced concrete topping, and is not more than 25mm.
4. strengthening concrete frame structure according to claim 1 is characterized in that: described tie muscle (5) is encrypted along the frame column overall height, and described drag hook (6) is around stem stem reinforcing bar (1) circumferential distribution, and drawknot is on stud (4).
5. strengthening concrete frame structure according to claim 1 is characterized in that: the body of wall horizontal reinforcement (13) of described responde (12) is around disconnecting to the side of responde (12), and with responde in the two-sided welding of reinforcing bar (1).
6. strengthening concrete frame structure according to claim 1 is characterized in that: the beam main tendon (7) on the top, bearing place of described Vierendeel girder (9) is a row, two row or three rows.
7. strengthening concrete frame structure according to claim 1, it is characterized in that: when the beam main tendon (7) on the top, bearing place of described Vierendeel girder (9) or the beam main tendon (7) of bottom were two rows, the non-elongated muscle of close beam center line distributed in beam center line bilateral symmetry.
8. strengthening concrete frame structure according to claim 1, it is characterized in that: described frame column side is connected with stiffening plate (10) or does not have, its width is during greater than the breadth of section of Vierendeel girder (9), the end haunch of Vierendeel girder (9) is haunched beam (8), and the beam main tendon (7) in haunched beam (8) outside is walked around stud (4).
9. the job practices of strengthening concrete frame structure according to claim 1, it is characterized in that: construction sequence is as follows:
Step 1, the stone bolt that the preburied frame trestle is connected with patten;
Step 2, according to design drawing, unwrapping wire is determined the ground location of frame column;
Step 3 is according to the position of the definite frame column of unwrapping wire, in the stem stem reinforcing bar (1) and the correction of floor mounted frame column;
Step 4 is according to the stud (4) of working drawing and unwrapping wire fixed-site frame column;
Step 5, the bottom perfusion self-compaction without vibration concrete of stem stem reinforcing bar (1), after concrete strength reaches design strength, the concrete slag of cleaning bottom, proofread and correct stud (4) position according to the post sideline, carry out then the joint of stud (4) is carried out mechanical connection and stud (4) is carried out colligation;
Step 6, tie muscle (5) and drag hook (6) on the cover stud, tie muscle (5) opening part is arranged along four jiaos of logical commentaries on classics of frame column;
Step 7, the joint of inspection stud (4), qualified back is temporary fixed upright straight with scaffold, and tie muscle (5) colligation from top to bottom that will package;
Step 8 installs the frame column template;
Step 9 is carried out the concreting of post reinforced concrete structure (3);
Step 10 is laid floor bottom mould;
Step 11 is worn bean column node place beam main tendon (7); Top when post beam main tendon (7.2) is walked around stem stem reinforcing bar (1) in the frame column, outwards bend around the gradient of post beam main tendon (7.2) by 1: 6; The beam main tendon (7.1) that runs through on top passes preformed hole on the stem stem reinforcing bar (1) in the frame column, and the end of the beam main tendon of bottom (7) anchors in the post reinforced concrete structure (3) or upwards bending;
Step 12 identifies stirrup spacing on beam main tendon, wear beam stirrup then on beam main tendon (7), and beam main tendon (7) and beam stirrup are carried out colligation;
Step 13 installs the side form of Vierendeel girder (9) at the Vierendeel girder design attitude;
Step 14, off line reinforcing bar of colligation floor and floor online reinforcing bar;
Step 15, pouring frame beam (9) and floorslab concrete.
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| CN201010205823XA CN101845850B (en) | 2010-06-22 | 2010-06-22 | Stiff concrete frame structure and construction method thereof |
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| CN201010205823XA CN101845850B (en) | 2010-06-22 | 2010-06-22 | Stiff concrete frame structure and construction method thereof |
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