CN105133791A - Construction method for prefabricated thick plate steel rib concrete column variable cross-section transformation node structure - Google Patents
Construction method for prefabricated thick plate steel rib concrete column variable cross-section transformation node structure Download PDFInfo
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- CN105133791A CN105133791A CN201510579484.4A CN201510579484A CN105133791A CN 105133791 A CN105133791 A CN 105133791A CN 201510579484 A CN201510579484 A CN 201510579484A CN 105133791 A CN105133791 A CN 105133791A
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Abstract
The invention relates to a construction method for a prefabricated thick plate steel rib concrete column variable cross-section transformation node structure. The structure mainly comprises a cross-shaped switch box steel rib, stiffening ribs, drop plates, a bracket, studs, a longitudinal reinforcing steel bar, a composite reinforcement stirrup and concrete; the cross-shaped switch box steel rib is formed by welding thick steel plates; the wing edges of the cross-shaped switch box steel rib are connected with each other through the drop plates; the bracket is positioned on the outer side of the box-shaped steel rib at the node of a beam column; the stiffening ribs are welded on the inner side of the bracket; the studs are distributed on the other surface of the steel rib at equal intervals; the longitudinal reinforcing steel bar and the composite reinforcement stirrup are bound out of the steel rib; the concrete is poured in and out of the steel rib. The construction method mainly comprises the following steps: prefabricating and manufacturing the steel rib off-site, hoisting and positioning the steel rib, binding the reinforcing steel bars, connecting the node of the beam column, and pouring the concrete. According to the construction method, the manufacturing process is simplified; the connecting strength of the thick steel plates and the overall stability of the steel rib are improved; the construction method has the advantages of saving energy, reducing consumption, improving economic and technical benefits and the like.
Description
Technical field
The construction method of assembling slab combined steel and concrete column variable cross-section switching node structure of the present invention.
Technical background
Combined steel and concrete column turns box-shaped steel frame for post core, steel frame and Combined concrete with stiffness cross, and the effect of common bearing load, adds the rigidity of rod structure.This structure, has the two-fold advantage of steel work and reinforced concrete structure, has given full play to the characteristic of concrete compression and steel tension.Compared with reinforced concrete structure, which increase the bearing capacity of post, reduce column section, decrease amount of concrete, alleviate dead load, decrease the load to ground.Compared with steel work, its saving steel, refractory ability is strong, strengthens the rigidity of structure and building, and damping performance improves, and anti-seismic performance is good, and has higher intensity.And speed of application is fast, easy to operate.
Combined steel and concrete column adopts high strength ultra-thick plate in a large number, corner joint and T junction quantity many, component node is complicated, and welding difficulty is large, and welding quality not easily ensures; And ultra-thick plate density is large, stress is easily caused to concentrate; But sectional dimension of members is little, welder is difficult to complete welding sequence in post.In addition, the steel column in combined steel and concrete column and the joining of reinforcing bar more, steel column concreting, steel column and post week main muscle, stirrup, steel column and the difficult point being become process by the horizontal beam reinforcing bar relation of steel column.
Given this, need a kind of sequence of construction of invention at present badly reasonable, Plate Welding quality can be ensured, realize bean column node construction method that is quick, that accurately construct and technique.
Summary of the invention
The object of the present invention is to provide a kind of construction method of assembling slab combined steel and concrete column variable cross-section switching node structure, while reinforcement steel plate connects, reasonable arrangement assembly program, simplifies manufacture craft.Realize the assembly of combined steel and concrete column slab reinforcing bar, and variable cross-section switching node strong ties.
For achieving the above object, present invention employs following technical scheme:
The construction method of assembling slab combined steel and concrete column variable cross-section switching node structure, is characterized in that, described structure turns box-shaped reinforcing bar, ribbed stiffener, pendant plate, bracket, peg, longitudinal reinforcement, compound stirrup, concrete composition primarily of cross; Cross turns box-shaped reinforcing bar and is welded by base plate, web, wing plate and panel, connect with pendant plate between the cross reinforcing bar edge of a wing, bracket is positioned at outside bean column node place box-shaped reinforcing bar, inner side welding ribbed stiffener, peg is equidistantly distributed in reinforcing bar external surface, the outer colligation longitudinal reinforcement of reinforcing bar and compound stirrup, the inside and outside all concretings of reinforcing bar;
Described construction method comprises the following steps:
1) reinforcing bar assembly production outside the venue: be first placed on assembly platform by base plate, welds first block of web with fixture fixed base plate; Assembling stiffening rib, welds second block of web with first block of web; Assembling wing plates on two sides adopts and is symmetrically welded; Cover panel, L shape junction plate is set in the welding position of panel and web, connects with high-strength bolt; Weld stud and pendant plate, reinforcing bar bottom flange plate welds 4 pieces of junction steel plates with holes;
2) reinforcing bar lifting location: after reinforcing bar assembles outside the venue, when reinforced concrete column is in place, utilize the junction plate on the edge of a wing, reinforced concrete column bottom to align with connection plate hole hole with holes on base plate, bolt on anchor, realizes the connection of reinforcing bar and substructure;
3) reinforcing bar binding: after location installed by reinforcing bar, location is colligation reinforced concrete column outer reinforcing bar, then colligation column tie-bar also; Arrange horizontal beam main tendon colligation stirrup;
4) bean column node connects: be directly welded on the frange plate of bracket by the main muscle of upper and lower for beam first row, take two-sided overlap welding, and on bracket, reserved dowel is connected with the main muscle straight screw sleeve of the second row bottom beam;
5) concreting: concreting in lifts, every layer is built thickness is 500mm, self-compacting concrete is adopted in post, install column template, build bracket with lower prop inner concrete, install bean column node template, casting beams Column border node reinforcing bar inner concrete, the outer concrete of last casting beams Column border node reinforcing bar, vibrating spear must not touch reinforcing bar and built-in fitting, and vibrating spear insertion point will evenly prevent from shaking more or leaking shaking.
Further, cross turns on box-shaped reinforcing bar bottom flap and welds junction steel plate with holes.
Panel is connected the weldering of employing bolt and is connected with web, reinforcing bar connects except full penetration weldering plug welding, is also furnished with L shape junction plate and carries out bolt connection.
Bracket is reserved with reinforcing bar, and bracket is connected with the second row reinforcing bar straight screw sleeve of beam.
In step (5), concrete adopts self-compacting concrete placement layer by layer, first builds the following reinforced concrete column concrete of switching node, then casting beams Column border node region box-shaped reinforcing bar inner concrete, finally builds and builds the outer concrete of bean column node region box-shaped reinforcing bar.
the present invention has following feature and beneficial effect:
(1) combined steel and concrete column slab reinforcing bar assemble sequence is reasonable, further simplify the processing technology thereof that cross turns box column component, improves globality and the make efficiency of reinforcing bar.
(2) panel is connected employing bolt weldering combination with web, and node connects except full penetration weldering plug welding, is also furnished with L shape junction plate and carries out bolt connection.
(3) on bracket, reserved steel bar is connected with the second row reinforcing bar straight screw sleeve of beam, not only simple to operate, and joint connection in site speed is fast, and energy-saving and cost-reducing, high financial profit.
(4) employing welds junction steel plate with holes on reinforcing bar bottom flange plate, and the connected mode of aliging with the connection plate hole hole of substructure, achieve the object that reinforcing bar accurately lifts location.
(5) adopt self-compacting concrete placement layer by layer, the form that the inside and outside point order of reinforcing bar is built, reach concrete compaction, evenly, the effect of easy construction.
Accompanying drawing explanation
Fig. 1 is that assembling cross turns box-shaped node entities figure;
Fig. 2 is steel reinforced concrete Column;
Fig. 3 is combined steel and concrete column star section figure;
Fig. 4 is combined steel and concrete column box section figure;
Fig. 5 is cross web plug welding figure;
Fig. 6 is Vierendeel girder and combined steel and concrete column connection diagram;
Fig. 7 is steel pipe and base plate connection layout;
Fig. 8 is construction process figure;
In figure: 1. base plate; 2. web; 3. wing plate; 4. panel; 5. high-strength bolt; 6. peg; 7. bracket; 8. bracket reserving rib; 9. junction plate with holes; 10. concreting hole; 11. ribbed stiffeners; 12. beams; 13. beam main tendons; 14.L shape junction plate; 15. pendant plates; The 16. star section reinforcing bar edges of a wing; The main muscle of 17. post; 18. column tie-bars; 19. box section reinforcing bars; 20. beam first row reinforcing bars; 21. beam second row reinforcing bars; 22. straight screw sleeves; 23. base plates.
Detailed description of the invention
Present embodiment emphasis sets forth the embodiment that the present invention relates to structure.
Fig. 1 is that assembling cross turns box-shaped node entities figure.As shown in the figure, assembling cross turns box-shaped steel frame and mainly comprises: base plate 1, web 2, stiffening rib 11, wing plate 3, panel 4.
Reinforced concrete column assemble sequence is mainly: be first placed on assembly platform by base plate 1, welds first block of web 2 with fixture fixed base plate; Assembling stiffening rib 11, welds second block of web with first block of web; Assembling wing plates on two sides adopts and is symmetrically welded; Cover panel 4, welding is carried out to casing main weld.Weld junction plate 9 with holes, finally according to designing requirement weld stud 6 and pendant plate 15.
With reference to shown in Fig. 1, Fig. 5, during reinforced concrete column assembling, insert in box column region at cross web, because sectional dimension of members is little, welder is difficult to complete welding sequence in post, arranges L shape junction plate 14, connect with high-strength bolt 5 in the welding position of panel 4 and web 2, panel 4 and web 2 adopt full penetration plug welding to weld, and strengthen welding quality and the globality of reinforcing bar.
With reference to shown in Fig. 6, during bean column node reinforcing bar binding, be directly welded on the frange plate of bracket 7 by main for upper and lower for beam first row muscle 20, take two-sided overlap welding, on bracket 7, reserved dowel 8 is connected with main muscle 21 straight screw sleeve 22 of the second row bottom beam.
With reference to shown in Fig. 1, Fig. 7, after reinforcing bar assembles outside the venue, when reinforced concrete column is in place, utilize the junction plate 9 on the edge of a wing, reinforced concrete column bottom to align with connection plate hole hole with holes on base plate, high-strength bolt 5 on anchor, realizes the connection of reinforcing bar and substructure.
With reference to shown in Fig. 2, Fig. 3 and Fig. 4, after reinforced concrete column installation in position, the outer reinforcing bar of the following steel pipe column of first colligation switching node.As shown in Figure 3, the outer impact due to peg 6 of cross reinforcing bar, inside colligation during stirrup, needs stirrup to break into two with one's hands to be inserted in from the side, and can not pound curved by peg on reinforcing bar.The good back prop template of reinforcing bar binding, builds reinforcing bar inner concrete.To bean column node, first formwork supporting plate, then colligation and welded grider Column border node reinforcing bar, build node area concrete, finally builds the outer concrete of reinforced concrete column.In concreting process, concreting in lifts, every layer is built thickness is 500mm, adopts self-compacting concrete in reinforced concrete column.
Claims (5)
1. the construction method of assembling slab combined steel and concrete column variable cross-section switching node structure, is characterized in that, described structure turns box-shaped reinforcing bar, ribbed stiffener, pendant plate, bracket, peg, longitudinal reinforcement, compound stirrup, concrete composition primarily of cross; Cross turns box-shaped reinforcing bar and is welded by base plate, web, wing plate and panel, connect with pendant plate between the cross reinforcing bar edge of a wing, bracket is positioned at outside bean column node place box-shaped reinforcing bar, inner side welding ribbed stiffener, peg is equidistantly distributed in reinforcing bar external surface, the outer colligation longitudinal reinforcement of reinforcing bar and compound stirrup, the inside and outside all concretings of reinforcing bar;
Described construction method comprises the following steps:
1) reinforcing bar assembly production outside the venue: be first placed on assembly platform by base plate, welds first block of web with fixture fixed base plate; Assembling stiffening rib, welds second block of web with first block of web; Assembling wing plates on two sides adopts and is symmetrically welded; Cover panel, L shape junction plate is set in the welding position of panel and web, connects with high-strength bolt; Weld stud and pendant plate, reinforcing bar bottom flange plate welds 4 pieces of junction steel plates with holes;
2) reinforcing bar lifting location: after reinforcing bar assembles outside the venue, when reinforced concrete column is in place, utilize the junction plate on the edge of a wing, reinforced concrete column bottom to align with connection plate hole hole with holes on base plate, bolt on anchor, realizes the connection of reinforcing bar and substructure;
3) reinforcing bar binding: after location installed by reinforcing bar, location is colligation reinforced concrete column outer reinforcing bar, then colligation column tie-bar also; Arrange horizontal beam main tendon colligation stirrup;
4) bean column node connects: be directly welded on the frange plate of bracket by the main muscle of upper and lower for beam first row, take two-sided overlap welding, and on bracket, reserved dowel is connected with the main muscle straight screw sleeve of the second row bottom beam;
5) concreting: concreting in lifts, every layer is built thickness is 500mm, self-compacting concrete is adopted in post, install column template, build bracket with lower prop inner concrete, install bean column node template, casting beams Column border node reinforcing bar inner concrete, the outer concrete of last casting beams Column border node reinforcing bar, vibrating spear must not touch reinforcing bar and built-in fitting, and vibrating spear insertion point will evenly prevent from shaking more or leaking shaking.
2. construction method according to claim 1, is characterized in that cross turns on box-shaped reinforcing bar bottom flap and welds junction steel plate with holes.
3. construction method according to claim 1, it is characterized in that panel is connected with web and adopt bolt weldering to be connected, reinforcing bar connects except full penetration weldering plug welding, is also furnished with L shape junction plate and carries out bolt connection.
4. construction method according to claim 1, is characterized in that being reserved with reinforcing bar on bracket, and bracket is connected with the second row reinforcing bar straight screw sleeve of beam.
5. construction method according to claim 4, it is characterized in that in step (5), concrete adopts self-compacting concrete placement layer by layer, first build the following reinforced concrete column concrete of switching node, casting beams Column border node region box-shaped reinforcing bar inner concrete again, finally builds and builds the outer concrete of bean column node region box-shaped reinforcing bar.
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| CN106077990A (en) * | 2016-07-28 | 2016-11-09 | 中建钢构有限公司 | Variable cross-section matrix pattern steel-casting connection node device and welding method |
| CN106368318A (en) * | 2016-10-17 | 2017-02-01 | 沈阳建筑大学 | Column-column joint of assembly type frame structure and construction method |
| CN106436973A (en) * | 2016-10-26 | 2017-02-22 | 曲周县和盛新型建筑材料有限公司 | Built-in steel column in steel shear structure post-pouring section and pouring method thereof |
| CN106638935A (en) * | 2016-11-10 | 2017-05-10 | 中衡设计集团股份有限公司 | Built-in joint of steel frame column built in basement |
| CN107035069A (en) * | 2017-06-08 | 2017-08-11 | 浙江东南网架股份有限公司 | A kind of major-diameter thick-wall steel pipe column and preparation method thereof |
| CN107152080A (en) * | 2017-06-08 | 2017-09-12 | 浙江东南网架股份有限公司 | A kind of cross turns box column and its processing method |
| CN107178149A (en) * | 2017-06-27 | 2017-09-19 | 中国建筑第八工程局有限公司 | Fork-shaped steel reinforced concrete combining structure and its construction method |
| CN107254918A (en) * | 2017-08-08 | 2017-10-17 | 北京建工四建工程建设有限公司 | A kind of steel reinforced concrete combined member beam-column node structure and construction method |
| CN108277889A (en) * | 2018-03-12 | 2018-07-13 | 西安建筑科技大学 | A kind of prefabrication and assembly construction steel reinforced concrete intercolumniation fast joint structure and method |
| CN108301563A (en) * | 2018-03-22 | 2018-07-20 | 中建二局第三建筑工程有限公司 | A kind of basement stiffness rod structure and its construction method |
| CN109372109A (en) * | 2018-11-24 | 2019-02-22 | 沈阳建筑大学 | A kind of assembled beam-column connecting node |
| CN110409618A (en) * | 2019-07-25 | 2019-11-05 | 南京工业大学 | The Steel Reinforced Concrete Composite Beams Column border node of plastic zone Stainless-steel fibre |
| CN111021353A (en) * | 2019-12-30 | 2020-04-17 | 中国建筑第四工程局有限公司 | Reinforcement method and structure for prestressed pipe pile defects |
| CN111997263A (en) * | 2020-07-29 | 2020-11-27 | 中国建筑一局(集团)有限公司 | Small-section concrete column and large-section steel structure column conversion structure and construction method |
| CN112454650A (en) * | 2020-11-26 | 2021-03-09 | 江苏中江装配式建筑科技股份有限公司 | Production process of prefabricated steel bone concrete beam and column |
| CN114370126A (en) * | 2022-01-27 | 2022-04-19 | 浙江大学建筑设计研究院有限公司 | Prefabricated unit of assembled hybrid column extension and connected node |
| CN114575589A (en) * | 2022-03-28 | 2022-06-03 | 上海宝冶冶金工程有限公司 | Construction method for lifting template of electric hoist of steel reinforced concrete structural column |
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| CN114575589B (en) * | 2022-03-28 | 2023-11-21 | 上海宝冶冶金工程有限公司 | Construction method for electric hoist lifting formwork of steel reinforced concrete structural column |
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Application publication date: 20151209 |