CN203613720U - Constant-strength welding joint column stirrup - Google Patents
Constant-strength welding joint column stirrup Download PDFInfo
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- CN203613720U CN203613720U CN201320837052.5U CN201320837052U CN203613720U CN 203613720 U CN203613720 U CN 203613720U CN 201320837052 U CN201320837052 U CN 201320837052U CN 203613720 U CN203613720 U CN 203613720U
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- 238000003466 welding Methods 0.000 title claims abstract description 120
- 230000002787 reinforcement Effects 0.000 claims abstract description 70
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000009864 tensile test Methods 0.000 claims abstract 3
- 239000002184 metal Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 210000001503 joint Anatomy 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 238000002788 crimping Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 8
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 13
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a constant-strength welding joint column stirrup which comprises an outer steel reinforcement which adopts a rectangular structure and is formed in a manner that an integral steel bar is bent into the rectangular structure and the two ends of the rectangular structure are connected through butt welding, wherein butt welding joints, T-shaped welding joints and cross-shaped welding joints are formed on the stirrup; the three types of joints are welded by resistance pressure welding, the pressed depth of the two ends of each joint is more than 50%, the tension in a two-way tensile test of the joint exceeds the ultimate tension of a steel bar base material of the outer steel reinforcement, and the tension in a shear test of the joint at least reaches 90% of the ultimate tension of the base material. According to the stirrup, the pressed depth of two steel bars exceeds 50%, so that a firm connection structure is formed; the average tension of the welding joints reaches and even exceeds the ultimate tension of the base material, so that the welding joints are still intact when the base material is broken. The stirrup is excellent in mechanical property, is applied to concrete beams or columns, and meets the requirements of buildings.
Description
Technical field
The utility model relates to the rectangular configuration stirrup that a kind of building field is used, especially equal strength welding point column tie-bar.
Background technology
Stirrup is one of material important in concrete structure, its effect in concrete structure mainly contain following some: 1, shearing resistance effect, stirrup, except directly bearing shearing, has also limited carrying out of diagonal crack widths indirectly, has strengthened the concrete aggregate interlocking force of belly; 2, limit the effect of main muscle lateral deformation, fixing vertical muscle position; 3, improve concrete crushing strength and ductility distortion; The effect of the structure lateral deformation that 4, constraint causes because of creep, physical change etc., to prevent or to reduce longitudinal crack.
There is above-mentioned effect just because of stirrup, in concrete component, extensively adopted the stirrup of various structures, shape, to meet the requirement of building to concrete structure.At present at building engineering field, between two reinforcing bars that are in contact with one another or intersect of stirrup usually by butt welding (termination, two ends of one or two reinforcing bar), cross weldering (the reinforcing bar middle parts of two intersections), the welding manners such as the T-shaped weldering termination of other (middle part of a reinforcing bar with) are connected, the welding procedure adopting is resistance spot welding, object is only reinforcing bar location and fixing, two mutual compression distances of the identical reinforcing bar of diameter are generally no more than 30%, the final welding point forming of national standard " concrete structure welded wire fabric sheet " regulation is through shear test, pulling force only needs to reach 70% of parent material of reinforcement rebar ultimate tension.For two not identical reinforcing bars of diameter, mutual compression distance is generally 18%～25% of less bar diameter.Adopt the stirrup of this kind of resistance electric welding joint, the welding point that its reinforcing bar crossover sites forms relevant mechanical performance index, well below parent material of reinforcement rebar, its welding point position is a weak link, relevant mechanical performance index is lower or very low, can not meet the needs of building.
Due to the relevant mechanical performance index of welding point of reinforcing bar crossover sites formation, well below parent material of reinforcement rebar.When this kind of welded net reinforcing bar is applied to floor, because compression distance is less, therefore affect depth of compression zone, unfavorable to reinforced concrete member; And this kind of welded net reinforcing bar is generally only applied to wall, the plate of building, can not be applied on concrete beam, post as stirrup, can not bear larger pressure-acting, because its welding joint mechanical property is less demanding.
Summary of the invention
The problems referred to above that exist for prior art, the utility model provides a kind of strength of welded joint to equate with parent material of reinforcement rebar, or at least reaches the equal strength welding point column tie-bar of strength of parent 90%.
To achieve these goals, the utility model adopts following technical scheme: a kind of equal strength welding point column tie-bar, comprise the outer reinforcement of rectangular configuration, and outer reinforcement is an Integral Steel rib, after the orthogonal structure of Bending Processing, its two ends butt welding is connected; It is characterized in that: being welded to connect a little of described outer reinforcement two ends butt welding, form Butt Joint, in the outer reinforcement of rectangular configuration, be provided with some lateral tie limb bars and longitudinal stirrup limb bar, the two ends of stirrup limb bar are welded on respectively two opposite side of outer reinforcement, form T font welding point; Lateral tie limb bar and the longitudinally crosspoint of stirrup limb bar, adopt the mode of welding to connect, and forms cross welding point;
Described Butt Joint, adopts resistance crimping weldering welding, and the lap length L that the degree of depth that two ends is pressed into is mutually greater than 80%, two termination of diameter D is (0.5-1.5) D, and the height H of Butt Joint is (1.0-1.2) D; Butt Joint bidirectional stretch test pull-off force exceedes the reinforcement bar mother metal ultimate tension of outer reinforcement;
Described T font welding point, adopts resistance crimping weldering welding, and the diameter of stirrup limb bar is d, and outer reinforcement diameter D is more than or equal to the diameter d of stirrup limb bar, and the degree of depth P that one end of stirrup limb bar and outer reinforcement are pressed into is mutually greater than 50% of diameter d; T font welding point bidirectional stretch test pull-off force exceedes reinforcement bar mother metal ultimate tension, and shear test pull-off force at least reaches 90% of mother metal ultimate tension;
Described cross welding point, lateral tie limb bar and the degree of depth P that longitudinally stirrup limb bar is pressed into are mutually greater than 50% of diameter d, and the height H of cross welding point is (1.0-1.5) D; Cross welding point bidirectional stretch test pull-off force exceedes reinforcement bar mother metal ultimate tension, and shear test pull-off force at least reaches 90% of mother metal ultimate tension.
Further feature is: the degree of depth that described Butt Joint is pressed into mutually equates with diameter D; The degree of depth P that described cross welding point is pressed into mutually equates with diameter d.
The equal diameters of outer reinforcement and reinforcing bar limb bar.
Compared to existing technology, equal strength welding point column tie-bar of the present utility model, tool has the following advantages:
1, the degree of depth that two reinforcement bars are pressed into mutually exceedes 50%, forms firmly syndeton;
2, through multi-drawing test, the average pull-off force of welding point reaches mother metal ultimate tension, even exceedes mother metal ultimate tension, and in the time that mother metal ruptures, welding point is still complete;
3,, through shear test repeatedly, the maximum pull-off force of welding point reaches 90% of mother metal ultimate tension;
4, through bend test repeatedly, there is not crackle in welding point Bend diameter 3D;
Welding point equates to have excellent mechanical property substantially with the intensity of mother metal, is not only applied to wall, the plate of building, more can be applied on concrete beam, post as stirrup, meets the needs of building.
Accompanying drawing explanation
Fig. 1 is the utility model hooping structure schematic diagram;
Fig. 2-1,2-2,2-3,2-4,2-5,2-6,2-7 are the utility model Butt Joint structural representations;
Fig. 3-1,3-2,3-3,3-4,3-5,3-6 are the utility model T font welded joint structure schematic diagrames;
Fig. 4-1,4-2,4-3,4-4,4-5,4-6,4-7,4-8 are the utility model cross welded joint structure schematic diagrames.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
In Fig. 1, welded mesh sheet stirrup for concrete structure of the present utility model, comprises the outer reinforcement 1 of rectangular configuration, outer reinforcement 1 is an Integral Steel rib, after the orthogonal structure of Bending Processing, its two ends butt welding is connected, obtain its outer field rectangular configuration; Being welded to connect a little of its two ends, forms Butt Joint 2.The docking solder joint of outer reinforcement 1, should be placed in the medium position on the long limit of outer rectangular configuration, can not be mid point certainly.
In the outer reinforcement 1 of rectangular configuration, be provided with some lateral tie limb bars 3 and longitudinal stirrup limb bar 3, the two ends of stirrup limb bar 3 are welded on respectively two opposite side of outer reinforcement 1, form T font welding point 4; Lateral tie limb bar 3 and the longitudinally crosspoint of stirrup limb bar 3, adopt the mode of welding to connect, and forms cross welding point 5; Described lateral tie limb bar 3 and longitudinal stirrup limb bar 3 and outer reinforcement 1, form net structure, forms welded net stirrup.The quantity of horizontal and vertical stirrup limb bar 3, arrangement mode, spacing each other etc., determine according to the concrete size of concrete component and technological requirement, determines according to the designing requirement of concrete beam, concrete column; Stirrup limb bar 3 is generally transverse horizontal or is longitudinally arranged vertically, and parallels or vertical with the limit of outer reinforcement 1.
If Fig. 2-1 is to as shown in 2-7, the Butt Joint 2 of equal strength welding point column tie-bar of the present utility model, adopt resistance crimping weldering welding, the degree of depth that outer reinforcement 1 two ends is pressed into is mutually greater than 80% of outer reinforcement 1 diameter D, the lap length L of two terminations is (0.5-1.5) D, and the height H of Butt Joint 2 is (1.0-1.2) D; Butt Joint 2 bidirectional stretch test pull-off forces exceed the reinforcement bar mother metal ultimate tension of outer reinforcement 1, and shear test pull-off force at least reaches 90% of reinforcement bar mother metal ultimate tension.Two degree of depth that reinforcement bar is pressed into mutually, the concrete numerical value that can choose is: 0.55 D, 0.6 D, 0.65 D, 0.7 D, 0.75 D, 0.8 D, 0.85 D, 0.9 D, 0.95 D, 1.0 D, generally be greater than after 0.8 D, relevant mechanical performance index reaches or approaches equal strength, if welding procedures etc. are chosen suitable, more than 0.5 D, just substantially reach or approach equal strength.Welding point height H, the concrete numerical value that can choose is: 1.0 D, 1.01 D, 1.02 D, 1.03 D, 1.04 D, 1.05 D, 1.06 D, 1.07 D, 1.08 D, 1.09 D, 1.1 D, 1.12 D, 1.14 D, 1.15 D, 1.18,1.2 D, and in the time of H=1.0 D, be more conducive to arrange, have more use value.
As shown in Fig. 2-1,2-2,2-3,2-4, two ends after a reinforcement bar bending, compression distance equates with diameter D, the height H of welding point equates with diameter D, the termination of two reinforcement bars is all pressed into mutually, the lap length L=D of two terminations, the weld seam 11 of welding point is straight line, is intersection.
Resistance crimping butt welding technology of the present utility model, activities is divided into four sections: preheating, energising, pressurization welding and tempering, corresponding welding current, weld interval, pressure are different with material according to bar diameter, and respective change.The utility model adopt resistance crimping butt welding, be not technical essential of the present utility model, this area and technician can select relevant parameter to realize this technique, be not described in detail at this.
The utility model resistance crimping butt operation process schematic representation, by two ends after the reinforcement bar bending of a diameter D, (or two be arranged in parallel, the termination of the reinforcement bar that diameter D is equal), be arranged between two electrodes, according to bar diameter, the parameters such as material and the degree of depth that is pressed into, choose suitable electrical current (voltage), conduction time, pre-forging force constant resistance butt weld technologies for steel parameter, first preheating, energising makes two reinforcement bars melt in a short period of time (softening) again, higher blocking pressure-acting is on two electrodes, two electrodes remake the two ends Australia boat (or on two reinforcement bars) that is used in reinforcement bar, promoting two terminations mutually draws close and is pressed into, the degree of depth that two terminations are pressed into be mutually greater than diameter D 80% and meet technological requirement after stop pressurization, then tempering is modified, improves the mechanical property of welding point.
As shown in Fig. 2-5,2-6,2-7, Butt Joint 2 of the present utility model is carried out to the performance tests such as bending resistance, shearing, tension, Welded Joints 90-degree bent, result is at the fracture of welding region (being a bit larger tham the region of welding point lap length) nothing, cracking, crack appears on reinforcement bar mother metal, does not occur in Butt Joint 2 regions; Result of the test is very satisfied, shows that the mechanical performance indexs such as strength of welded joint of the present utility model reach, even exceed the index of correlation of mother metal, has realized equal strength welding, has formed equal strength welding point.
If Fig. 3-1 is to as shown in 3-6, the T font welding point 4 of equal strength welding point column tie-bar of the present utility model, the degree of depth P that one end (link) of stirrup limb bar 3 and outer reinforcement 1 are pressed into is mutually greater than 50% of diameter d, and the height H 2 of T font welding point 4 is between 1.0 D-(1.0D+0.5d); T font welding point 4 bidirectional stretch test pull-off forces exceed reinforcement bar mother metal ultimate tension, and shear test pull-off force at least reaches 90% of mother metal ultimate tension; Two degree of depth P that reinforcement bar is pressed into mutually, the concrete numerical value that can choose is: 0.55 D, 0.6 D, 0.65 D, 0.7 D, 0.75 D, 0.8 D, 0.85 D, 0.9 D, 0.95 D, 1.0 D, generally be greater than after 0.5 D, relevant mechanical performance index reaches or approaches equal strength.Welding point height H, the concrete numerical value that can choose is: 1.0 D, 1.05 D, 1.10 D, 1.15D, 1.20 D, 1.25 D, 1.30 D, 1.35D, 1.40D, 1.45 D, 1.50D, be 1.50D to the maximum; And in the time of H=1.0 D, stirrup limb bar 3 is all pressed in outer reinforcement 1, be more conducive to arrange, have more use value.
In Fig. 3-2, compression distance P equates with diameter D, and the height H of welding point equates with diameter D, and two reinforcement bars are all pressed into mutually.
The welding procedure of the utility model T font welding point 4, adopt resistance crimping weldering welding, by two reinforcement bars of arranged crosswise in T shape (outer reinforcement 1 and stirrup limb bar 3, be arranged between two electrodes, according to bar diameter, the parameters such as material and the degree of depth that is pressed into, choose suitable electrical current (voltage), conduction time, pressure constant resistance crimping Welding parameter, melt in a short period of time (softening) at rear two reinforcement bars of energising, on two electrodes of higher blocking pressure-acting, two electrodes act on two reinforcement bars again, promoting two reinforcement bars mutually draws close and is pressed into.The welding procedure of itself and Butt Joint 2 is basic identical, is not technical essential of the present utility model, is not described further at this.
As shown in Fig. 3-5,3-6, T font welding point 4 of the present utility model is carried out to the performance tests such as bending resistance, tension, Welded Joints 90-degree bent, result is at the fracture of welding region (being a bit larger tham the region of welding point lap length) nothing, cracking, crack appears on the reinforcement bar mother metal of T font welding point 4, does not occur in T font welding point 4 regions; Result of the test is very satisfied, shows that the mechanical performance indexs such as strength of welded joint of the present utility model reach, even exceed the index of correlation of mother metal, has realized equal strength welding, has formed equal strength welding point.
If Fig. 4-1 is to as shown in 4-8, the cross welding point 5 of equal strength welding point column tie-bar of the present utility model, adopt resistance crimping weldering welding, lateral tie limb bar 3 and the degree of depth P that longitudinally stirrup limb bar 3 is pressed into are mutually greater than 50% of diameter d, and the height H of cross welding point 5 is (1.0-1.5) d; Cross welding point 5 bidirectional stretch test pull-off forces exceed reinforcement bar mother metal ultimate tension, and shear test pull-off force at least reaches 90% of mother metal ultimate tension.Two degree of depth P that stirrup limb bar is pressed into mutually, the concrete numerical value that can choose is: 0.55 d, 0.6 d, 0.65 d, 0.7 d, 0.75 d, 0.8 d, 0.85 d, 0.9 d, 0.95 d, 1.0 d, generally be greater than after 0.5 d, relevant mechanical performance index reaches or approaches equal strength.Welding point height H, the concrete numerical value that can choose is: 1.0 d D, 1.05 d, 1.10 d, 1.15 d, 1.20 d, 1.25 d, 1.30 d, 1.35 d, 1.40 d, 1.45 d, 1.50 d, and in the time of H=1.0 d, be more conducive to arrange, have more use value.
In Fig. 4-2,4-3, compression distance P equates with diameter d, and the height H of cross welding point 5 equates with diameter d, and lateral tie limb bar 3 and the longitudinally reinforcement bar of stirrup limb bar 3 are all pressed into mutually.
As Fig. 4-4, in 4-5, the welding procedure of the utility model cross welding point 5, two reinforcement bars (lateral tie limb bar 3 and longitudinally stirrup limb bar 3) of decussation layout will be, be arranged between two electrodes, according to bar diameter, the parameters such as material and the degree of depth that is pressed into, choose suitable electrical current (voltage), conduction time, pressure constant resistance crimping Welding parameter, melt in a short period of time (softening) at rear two reinforcement bars of energising, on two electrodes of higher blocking pressure-acting, two electrodes act on two reinforcement bars again, promoting two reinforcement bars mutually draws close and is pressed into, the welding procedure of itself and Butt Joint 2, T font welding point 4 is basic identical, is not technical essential of the present utility model, is not described further at this.
As shown in Fig. 4-6,4-7,4-8, cross welding point 5 of the present utility model is carried out to the performance tests such as bending resistance, shearing, tension, Welded Joints 90-degree bent, result is at the fracture of welding region (being a bit larger tham the region of welding point lap length) nothing, cracking, crack appears on the reinforcement bar mother metal of cross welding point 5, does not occur in cross welding point 5 regions; Result of the test is very satisfied, shows that the mechanical performance indexs such as strength of welded joint of the present utility model reach, even exceed the index of correlation of mother metal, has realized equal strength welding, has formed equal strength welding point.
Three kinds of welding points of the utility model stirrup, Butt Joint 2, T font welding point 4, cross welding point 5, applicant has done contrast test thousands of times, obtain a large amount of experimental datas, conclusion (of pressure testing) is: by regulating resistance crimping welding condition, make reinforcing bar compression distance in the time of 30% left and right, the multipotency of the maximum pull-off force of shear test reaches 70% of mother metal ultimate tension (being the value of thrust of mother metal while being pulled off), and average pull-off force only can reach 50% of mother metal ultimate tension; Reinforcing bar compression distance is in the time of 50% left and right, and the multipotency of the maximum pull-off force of shear test reaches 90% of mother metal ultimate tension, and average pull-off force only can reach 70% of mother metal ultimate tension; Reinforcing bar compression distance is in the time of 80% left and right, and the maximum pull-off force of shear test can exceed mother metal ultimate tension, and the reinforcement bar of two mother metals is pulled off, and welding point is not pulled off, and average pull-off force can reach 90% of mother metal ultimate tension.Welding point bidirectional stretch test pull-off force exceedes reinforcement bar mother metal ultimate tension, and shear test pull-off force at least reaches 90% of mother metal ultimate tension.
The equal strength welding point of stirrup of the present utility model, welding point equates (approaching) substantially with the intensity of mother metal, some index even exceedes mother metal, there is excellent mechanical property, not only be applied to wall, the plate of building, more can be applied on concrete beam, post as stirrup, meet the needs of building.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (3)
1. an equal strength welding point column tie-bar, comprises the outer reinforcement (1) of rectangular configuration, and outer reinforcement (1) is an Integral Steel rib, after the orthogonal structure of Bending Processing, its two ends butt welding is connected; It is characterized in that: being welded to connect a little of described outer reinforcement (1) two ends, forms Butt Joint (2);
In the outer reinforcement (1) of rectangular configuration, be provided with some lateral tie limb bars (3) and longitudinal stirrup limb bar (3), the two ends of stirrup limb bar (3) are welded on respectively two opposite side of outer reinforcement (1), form T font welding point (4); Lateral tie limb bar (3) and the longitudinally crosspoint of stirrup limb bar (3), form cross welding point (5);
Described Butt Joint (2), adopt resistance crimping weldering welding, the lap length L that the degree of depth that two ends is pressed into is mutually greater than 80%, two termination of diameter D is (0.5-1.5) D, and Butt Joint (2) tensile test pull-off force exceedes the reinforcement bar mother metal ultimate tension of outer reinforcement 1;
Described T font welding point (4), adopts resistance crimping weldering welding, and the diameter of stirrup limb bar (3) is d, and D is more than or equal to d, and the degree of depth P that one end of stirrup limb bar (3) and outer reinforcement (1) are pressed into is mutually greater than 50% of d; T font welding point (4) laterally tensile test pull-off force exceedes reinforcing bar limb bar (1) mother metal ultimate tension, and shear test pull-off force at least reaches 90% of reinforcing bar limb bar (3) mother metal ultimate tension;
Described cross welding point (5), adopts resistance crimping weldering welding, and lateral tie limb bar (3) and the degree of depth P that longitudinally stirrup limb bar (3) is pressed into are mutually greater than 50% of d; Cross welding point (5) bidirectional stretch test pull-off force exceedes reinforcement bar mother metal ultimate tension, and shear test pull-off force at least reaches 90% of mother metal ultimate tension.
2. equal strength welding point column tie-bar according to claim 1, is characterized in that: the degree of depth that described Butt Joint (2) is pressed into mutually equates with diameter D; The degree of depth P that described cross welding point (5) is pressed into mutually equates with diameter d.
3. equal strength welding point column tie-bar according to claim 1, is characterized in that: the equal diameters of outer reinforcement (1) and reinforcing bar limb bar (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320837052.5U CN203613720U (en) | 2013-12-19 | 2013-12-19 | Constant-strength welding joint column stirrup |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320837052.5U CN203613720U (en) | 2013-12-19 | 2013-12-19 | Constant-strength welding joint column stirrup |
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| CN203613720U true CN203613720U (en) | 2014-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669727A (en) * | 2013-12-19 | 2014-03-26 | 中冶建工集团有限公司 | Equal-strength welding joint column stirrup |
| CN105649271A (en) * | 2014-10-08 | 2016-06-08 | 安徽宝翔建设集团有限责任公司 | Construction method of self-mixing high-grade concrete composite hooped column |
-
2013
- 2013-12-19 CN CN201320837052.5U patent/CN203613720U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669727A (en) * | 2013-12-19 | 2014-03-26 | 中冶建工集团有限公司 | Equal-strength welding joint column stirrup |
| CN103669727B (en) * | 2013-12-19 | 2016-04-13 | 中冶建工集团有限公司 | Equal strength welding point column tie-bar |
| CN105649271A (en) * | 2014-10-08 | 2016-06-08 | 安徽宝翔建设集团有限责任公司 | Construction method of self-mixing high-grade concrete composite hooped column |
| CN105649271B (en) * | 2014-10-08 | 2017-12-12 | 安徽宝翔建设集团有限责任公司 | It is a kind of to mix high-grade concrete compound stirrup post construction certainly |
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