CN105256949A - Method for improving anti-seismic performance of special-shaped column - Google Patents
Method for improving anti-seismic performance of special-shaped column Download PDFInfo
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- CN105256949A CN105256949A CN201510709755.3A CN201510709755A CN105256949A CN 105256949 A CN105256949 A CN 105256949A CN 201510709755 A CN201510709755 A CN 201510709755A CN 105256949 A CN105256949 A CN 105256949A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 89
- 239000010959 steel Substances 0.000 claims abstract description 89
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 74
- 239000004567 concrete Substances 0.000 claims abstract description 27
- 238000010276 construction Methods 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims abstract description 6
- 238000009415 formwork Methods 0.000 claims description 10
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 5
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000002436 steel type Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The invention relates to a method for improving the anti-seismic performance of a special-shaped column, and belongs to the field of structure seismic methods. The method comprises the steps that firstly, truss-type steel ribs are prefabricated at first; special-shaped column steel ribs at the lower portion of a joint zone are bound during construction of special-shaped column structure joints, form erection is performed, and special-shaped column concrete at the lower portion of the joint zone is cast; then, the prefabricated truss-type steel ribs are lifted at a beam column joint, meanwhile, beam plate steel reinforcing ribs are bound, form erection is performed, and beam plate concrete is cast; during casting of the beam plate concrete, the beam column joint zone is isolated, and finally joint concrete is cast to complete construction of special-shaped column structure joints. Beam end plastic hinges can be moved outwards, so that the effective bearing area of the joint zone is ensured; joint zone beam main ribs can conveniently penetrate through the truss-type steel ribs, so that the continuity of the stress main ribs of a beam negative moment section is ensured; the truss-type steel ribs are added at the joints, the problem that the applicability of the special-shaped column structure at the high-intensity region is limited can be well solved on the premise that the cost is low, and the design difficulty of the special-shaped column structure at the high-intensity region is effectively relieved.
Description
Technical field
The present invention relates to a kind of method improving special-shaped column structure anti-seismic performance, belong to structural seismic method and technology field.
Background technology
Special-shaped column structure has two obvious advantages, and one is do not reveal post angle in building function, avoids the salient angle that rectangular column brings, and this more can utilize space for user provides, standard width of a room in an old-style house flexible arrangement.Two is rectangular columns of relatively same sectional dimension, and hetermorphiscal column cross section is comparatively carried out, and Lateral resisting ability is strong.2006, country issued and implemented concrete profiled pile tecnical regulations, and the research carried out in industry standard compilation process finds, ultimate bearing capacity of joints is the governing factor of the maximum maxi-mum height of highly seismic region special-shaped column structure.Because maximum maxi-mum height controls by ultimate bearing capacity of joints, special-shaped column structure receives obvious impact in the range of application in highlight lines area.The hetermorphiscal column regulation and stipulation promulgated for 2006,8 degree (0.2g) area, Framed Structure with Special-Shaped Columns maximum height is 12m, and this limit value is lower than the Height of minimum 15m under ordinary masonry structure similarity condition.Ultimate bearing capacity of joints makes the seismic design of special-shaped column structure very difficult, in the urgent need to technology and economically feasible solution.The scholar of Some Domestic colleges and universities and R&D institution has carried out a lot of experimental study and theory analysis work for the Improving Measurements of special-shaped column structure anti-seismic performance, research proves that this mode of steel reinforced concrete special-shaped columns significantly can improve the shock resistance of special-shaped column structure, obtains the accreditation of majority.Relatively whole component adopts shaped steel, improvement only for Seismic Behavior more should receive publicity, because the measure full component being carried out to anti-seismic performance improvement may bring difficulty due to the problem of cost to applying, the advantage of steel reinforced concrete special-shaped columns cross section in ultimate bearing capacity of joints is excavated not yet fully simultaneously.Based on this, the present invention proposes a kind of measure improving special-shaped column structure anti-seismic performance.
Summary of the invention
The invention provides a kind of method improving special-shaped column structure anti-seismic performance, solving the problems such as the limited and seismic design of highlight lines area special-shaped column structure applicability that ultimate bearing capacity of joints deficiency causes is difficult by the measure only adding truss-like reinforcing bar at hetermorphiscal column node, not yet obtaining the deficiency of the aspects such as excavation fully simultaneously for improving steel reinforced concrete special-shaped columns cost and ultimate bearing capacity of joints aspect advantage.
The method that the present invention improves special-shaped column structure anti-seismic performance is achieved in that
Step1, first precast truss frame formula reinforcing bar;
Step2, when special-shaped column structure node construction first colligation node region bottom hetermorphiscal column reinforcing bar, formwork, builds node region bottom hetermorphiscal column concrete; As shown in Figure 3, hetermorphiscal column reinforcing bar comprises post longitudinal reinforcement 9 and column tie-bar 10; As shown in Figure 4, the T-shaped concrete column 11 for building;
Step3, the then hoisting prefabricated good truss-like reinforcing bar at bean column node place, the beam reinforced steel bar of colligation simultaneously, formwork, casting beams board concrete; As shown in Figure 6, beam steel comprises beam longitudinal reinforcement 12 and beam stirrup 13;
When Step4, beam slab concreting, beam column node area is isolated, finally build node concrete, complete special-shaped column structure node construction.As shown in Figure 7, number in the figure 14 is concrete beam.
In described step Step1, truss-like reinforcing bar is made up of acra steel plate 4, connection lacing 3 and shaped steel, and shaped steel type is identical with corresponding hetermorphiscal column cross sectional shape, and acra steel plate 4 and shaped steel weld the formation truss-like reinforcing bar identical with beam steel shape by being connected lacing 3.
For L-type hetermorphiscal column 1, in described step Step1, truss-like reinforcing bar is L-type truss-like reinforcing bar, L-type truss-like reinforcing bar comprises L-type shaped steel 2, connects lacing 3 and acra steel plate 4, according to L-type hetermorphiscal column 1 and crossing beam section size, by connecting lacing 3, the L-type shaped steel 2 processed is welded together with acra steel plate 4, prefabricated l-shaped truss-like reinforcing bar.
For T-shaped hetermorphiscal column 5, in described step Step1, truss-like reinforcing bar is T-shaped truss-like reinforcing bar, T-shaped truss-like reinforcing bar comprises shaped steel 6, connects lacing 3 and acra steel plate 4, according to T-shaped hetermorphiscal column 5 and the beam section size crossing with it, by connecting lacing 3, the shaped steel 6 processed being welded together with acra steel plate 4, being prefabricated into T-shaped truss-like reinforcing bar.
For ten type hetermorphiscal column 7, in described step Step1, truss-like reinforcing bar is ten type truss-like reinforcing bars, ten type truss-like reinforcing bars comprise ten type shaped steel 8, connect lacing 3 and acra steel plate 4, according to ten type hetermorphiscal column and the beam section size crossing with it, by connecting lacing 3, the ten type shaped steel 8 processed being welded together with acra steel plate 4, making ten type truss-like reinforcing bars.
Chamfering is done in described acra steel plate 4 front end, and the length stretching into beam is the half of corresponding deck-molding.
The invention has the beneficial effects as follows:
1, hetermorphiscal column Nodes add truss-like reinforcing bar can by beam-ends plastic hinge to desired location, effectively ensure nodes domains area, improve Seismic Behavior.
2, the truss-like reinforcing bar that Nodes adds can bear the most of seismic shear in nodes domains, significantly improves restriction special-shaped column structure in the limited unfavorable factor of highlight lines area applicability.
3, only add truss-like reinforcing bar at Nodes, compare steel reinforced concrete special-shaped columns structure, obviously can reduce cost, improve the deficiency that Seismic Behavior can not give full play to.
4, truss-like reinforcing bar is conducive to passing of beam main tendon, ensure that negative moment section of beam is subject to advocate the continuity of muscle, constructability simultaneously.
5, the acra steel plate Leading end chamfer of truss-like reinforcing bar is conducive to the development of beam hinge, prevents beam from increasing suddenly near nodal steel content and occurring brittle fracture.
6, theory analysis and experimental study all prove that Nodes adds the anti-seismic performance that truss-like reinforcing bar effectively can improve special-shaped column structure.
7, practice of construction shows that Nodes adds truss-like reinforcing bar and obviously can't increase construction cost, also obviously can not increase difficulty of construction.
Accompanying drawing explanation
Fig. 1 is node schematic diagram of the present invention;
The axles such as Fig. 2 is L-type of the present invention, T-shaped, ten type truss-like reinforcing bars measure intention;
Fig. 3 is the present invention's T-shaped hetermorphiscal column node region bottom concrete column reinforcing bar colligation schematic diagram;
Fig. 4 is that the present invention's T-shaped hetermorphiscal column node region bottom concrete column builds schematic diagram;
Fig. 5 is the present invention's T-shaped hetermorphiscal column node region reinforcing bar lifting schematic diagram;
Fig. 6 is the present invention's T-shaped hetermorphiscal column node region reinforcement construction schematic diagram;
Fig. 7 is the present invention's T-shaped hetermorphiscal column node schematic diagram.
Each label in Fig. 1-7: 1-L type hetermorphiscal column, 2-L type shaped steel, 3-connects lacing, 4-acra steel plate, 5-T type hetermorphiscal column, 6-T type shaped steel, 7-ten type hetermorphiscal column, 8-ten type shaped steel, 9-post longitudinal reinforcement, 10-column tie-bar, 11-T type concrete column, 12-beam longitudinal reinforcement, 13-beam stirrup, 14-concrete beam.
Detailed description of the invention
Embodiment 1: as shown in figs. 1-7, a kind of method improving special-shaped column structure anti-seismic performance:
Step1, first precast truss frame formula reinforcing bar;
Step2, when special-shaped column structure node construction first colligation node region bottom hetermorphiscal column reinforcing bar, formwork, builds node region bottom hetermorphiscal column concrete;
Step3, the then hoisting prefabricated good truss-like reinforcing bar at bean column node place, the beam reinforced steel bar of colligation simultaneously, formwork, casting beams board concrete;
When Step4, beam slab concreting, beam column node area is isolated, finally build node concrete, complete special-shaped column structure node construction.
In described step Step1, truss-like reinforcing bar is made up of acra steel plate 4, connection lacing 3 and shaped steel, and shaped steel type is identical with corresponding hetermorphiscal column cross sectional shape, and acra steel plate 4 and shaped steel weld the formation truss-like reinforcing bar identical with beam steel shape by being connected lacing 3.
For L-type hetermorphiscal column 1, in described step Step1, truss-like reinforcing bar is L-type truss-like reinforcing bar, L-type truss-like reinforcing bar comprises L-type shaped steel 2, connects lacing 3 and acra steel plate 4, according to L-type hetermorphiscal column 1 and crossing beam section size, by connecting lacing 3, the L-type shaped steel 2 processed is welded together with acra steel plate 4, prefabricated l-shaped truss-like reinforcing bar.
Embodiment 2: as shown in figs. 1-7, a kind of method improving special-shaped column structure anti-seismic performance:
Step1, first precast truss frame formula reinforcing bar;
Step2, when special-shaped column structure node construction first colligation node region bottom hetermorphiscal column reinforcing bar, formwork, builds node region bottom hetermorphiscal column concrete;
Step3, the then hoisting prefabricated good truss-like reinforcing bar at bean column node place, the beam reinforced steel bar of colligation simultaneously, formwork, casting beams board concrete;
When Step4, beam slab concreting, beam column node area is isolated, finally build node concrete, complete special-shaped column structure node construction.
In described step Step1, truss-like reinforcing bar is made up of acra steel plate 4, connection lacing 3 and shaped steel, and shaped steel type is identical with corresponding hetermorphiscal column cross sectional shape, and acra steel plate 4 and shaped steel weld the formation truss-like reinforcing bar identical with beam steel shape by being connected lacing 3.
For T-shaped hetermorphiscal column 5, in described step Step1, truss-like reinforcing bar is T-shaped truss-like reinforcing bar, T-shaped truss-like reinforcing bar comprises shaped steel 6, connects lacing 3 and acra steel plate 4, according to T-shaped hetermorphiscal column 5 and the beam section size crossing with it, by connecting lacing 3, the shaped steel 6 processed being welded together with acra steel plate 4, being prefabricated into T-shaped truss-like reinforcing bar.
Embodiment 3: as shown in figs. 1-7, a kind of method improving special-shaped column structure anti-seismic performance:
Step1, first precast truss frame formula reinforcing bar;
Step2, when special-shaped column structure node construction first colligation node region bottom hetermorphiscal column reinforcing bar, formwork, builds node region bottom hetermorphiscal column concrete;
Step3, the then hoisting prefabricated good truss-like reinforcing bar at bean column node place, the beam reinforced steel bar of colligation simultaneously, formwork, casting beams board concrete;
When Step4, beam slab concreting, beam column node area is isolated, finally build node concrete, complete special-shaped column structure node construction.
In described step Step1, truss-like reinforcing bar is made up of acra steel plate 4, connection lacing 3 and shaped steel, and shaped steel type is identical with corresponding hetermorphiscal column cross sectional shape, and acra steel plate 4 and shaped steel weld the formation truss-like reinforcing bar identical with beam steel shape by being connected lacing 3.
For ten type hetermorphiscal column 7, in described step Step1, truss-like reinforcing bar is ten type truss-like reinforcing bars, ten type truss-like reinforcing bars comprise ten type shaped steel 8, connect lacing 3 and acra steel plate 4, according to ten type hetermorphiscal column and the beam section size crossing with it, by connecting lacing 3, the ten type shaped steel 8 processed being welded together with acra steel plate 4, making ten type truss-like reinforcing bars.
Embodiment 4: as shown in figs. 1-7, a kind of method improving special-shaped column structure anti-seismic performance, the present embodiment is identical with embodiment 1, and chamfering is done in wherein said acra steel plate 4 front end, and the length stretching into beam is the half of corresponding deck-molding.
Embodiment 5: as shown in figs. 1-7, a kind of method improving special-shaped column structure anti-seismic performance, the present embodiment is identical with embodiment 2, and chamfering is done in wherein said acra steel plate 4 front end, and the length stretching into beam is the half of corresponding deck-molding.
Embodiment 6: as shown in figs. 1-7, a kind of method improving special-shaped column structure anti-seismic performance, the present embodiment is identical with embodiment 3, and chamfering is done in wherein said acra steel plate 4 front end, and the length stretching into beam is the half of corresponding deck-molding.
By reference to the accompanying drawings the specific embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (6)
1. improve a method for special-shaped column structure anti-seismic performance, it is characterized in that: the described concrete steps improving the method for special-shaped column structure anti-seismic performance are as follows:
Step1, first precast truss frame formula reinforcing bar;
Step2, when special-shaped column structure node construction first colligation node region bottom hetermorphiscal column reinforcing bar, formwork, builds node region bottom hetermorphiscal column concrete;
Step3, the then hoisting prefabricated good truss-like reinforcing bar at bean column node place, the beam reinforced steel bar of colligation simultaneously, formwork, casting beams board concrete;
When Step4, beam slab concreting, beam column node area is isolated, finally build node concrete, complete special-shaped column structure node construction.
2. the method improving special-shaped column structure anti-seismic performance according to claim 1, it is characterized in that: in described step Step1, truss-like reinforcing bar is made up of acra steel plate (4), connection lacing (3) and shaped steel, shaped steel type is identical with corresponding hetermorphiscal column cross sectional shape, and acra steel plate (4) forms the truss-like reinforcing bar identical with beam steel shape with shaped steel by being connected lacing (3) welding.
3. the method improving special-shaped column structure anti-seismic performance according to claim 1, it is characterized in that: for L-type hetermorphiscal column (1), in described step Step1, truss-like reinforcing bar is L-type truss-like reinforcing bar, L-type truss-like reinforcing bar comprises L-type shaped steel (2), connects lacing (3) and acra steel plate (4), according to L-type hetermorphiscal column (1) and crossing beam section size, by connecting lacing (3), the L-type shaped steel (2) processed and acra steel plate (4) are welded together, prefabricated l-shaped truss-like reinforcing bar.
4. the method improving special-shaped column structure anti-seismic performance according to claim 1, it is characterized in that: for T-shaped hetermorphiscal column (5), in described step Step1, truss-like reinforcing bar is T-shaped truss-like reinforcing bar, T-shaped truss-like reinforcing bar comprises shaped steel (6), connects lacing (3) and acra steel plate (4), according to T-shaped hetermorphiscal column (5) and the beam section size crossing with it, by connecting lacing (3), the shaped steel processed (6) and acra steel plate (4) being welded together, being prefabricated into T-shaped truss-like reinforcing bar.
5. the method improving special-shaped column structure anti-seismic performance according to claim 1, it is characterized in that: for ten type hetermorphiscal column (7), in described step Step1, truss-like reinforcing bar is ten type truss-like reinforcing bars, ten type truss-like reinforcing bars comprise ten type shaped steel (8), connect lacing (3) and acra steel plate (4), according to ten type hetermorphiscal column and the beam section size crossing with it, by connecting lacing (3), the ten type shaped steel (8) processed and acra steel plate (4) being welded together, making ten type truss-like reinforcing bars.
6. the method for the improvement special-shaped column structure anti-seismic performance according to claim 2,3,4,5, is characterized in that: chamfering is done in described acra steel plate (4) front end, and the length stretching into beam is the half of corresponding deck-molding.
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| CN201510709755.3A CN105256949A (en) | 2015-10-28 | 2015-10-28 | Method for improving anti-seismic performance of special-shaped column |
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| CN201510709755.3A CN105256949A (en) | 2015-10-28 | 2015-10-28 | Method for improving anti-seismic performance of special-shaped column |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3849554B2 (en) * | 2002-03-18 | 2006-11-22 | 鹿島建設株式会社 | Beam-column joint structure |
| CN200978487Y (en) * | 2006-12-05 | 2007-11-21 | 西安建筑科技大学 | T-shaped steel truss section steel concrete special-shaped column |
| CN201351314Y (en) * | 2009-01-15 | 2009-11-25 | 西安建筑科技大学 | Concrete special-shaped column equipped with solid-web steel plates-reinforced concrete beam frame joint |
| CN201351313Y (en) * | 2009-01-15 | 2009-11-25 | 西安建筑科技大学 | Concrete special-shaped column equipped with lattice type channel steel framework-reinforced concrete beam frame joint |
| 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 |
| CN203669108U (en) * | 2013-11-19 | 2014-06-25 | 河北工业大学 | Beam column joint of special-shaped column |
-
2015
- 2015-10-28 CN CN201510709755.3A patent/CN105256949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3849554B2 (en) * | 2002-03-18 | 2006-11-22 | 鹿島建設株式会社 | Beam-column joint structure |
| CN200978487Y (en) * | 2006-12-05 | 2007-11-21 | 西安建筑科技大学 | T-shaped steel truss section steel concrete special-shaped column |
| CN201351314Y (en) * | 2009-01-15 | 2009-11-25 | 西安建筑科技大学 | Concrete special-shaped column equipped with solid-web steel plates-reinforced concrete beam frame joint |
| CN201351313Y (en) * | 2009-01-15 | 2009-11-25 | 西安建筑科技大学 | Concrete special-shaped column equipped with lattice type channel steel framework-reinforced concrete beam frame joint |
| CN203669108U (en) * | 2013-11-19 | 2014-06-25 | 河北工业大学 | Beam column joint of special-shaped column |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 河南省土木建筑学会: "《河南省土木建筑学术文库》", 30 June 2003 * |
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