CN103953123A - H-shaped steel frame node with partially restricted beam end and construction method thereof - Google Patents
H-shaped steel frame node with partially restricted beam end and construction method thereof Download PDFInfo
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- CN103953123A CN103953123A CN201410203534.4A CN201410203534A CN103953123A CN 103953123 A CN103953123 A CN 103953123A CN 201410203534 A CN201410203534 A CN 201410203534A CN 103953123 A CN103953123 A CN 103953123A
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Abstract
The invention discloses an H-shaped steel frame node with a partially restricted beam end and a construction method thereof. The node comprises an H-shaped steel beam and an H-shaped steel pillar which are fixedly connected, wherein the outer surface of a beam section, close to the beam end, of the H-shaped steel beam is wound with an outer wrapping layer; two independent cavities are defined by the outer wrapping layer and the H-shaped steel beam; concrete is poured into the two cavities; the outer wrapping layer and the concrete work cooperatively, so that the local buckling of the H-shaped steel beam is retarded or inhibited, and the deformation capacity and the ductility of the structure are improved; when the load is born, the concrete participates in working, so that the neutral axis of the H-shaped steel beam is moved upward; more parts on the cross section of the H-shaped steel beam are pulled, so that the anti-bending capacity is improved, and a plastic hinge is moved outward. The construction method comprises the following steps: welding end plates, bolts and the H-shaped steel beam in a factory; welding transverse reinforcing ribs on the H-shaped steel pillar; winding the outer wrapping layer on a preset beam section of the H-shaped steel beam; pouring the concrete into the two cavities enclosed by the outer wrapping layer and the H-shaped steel beam; connecting the H-shaped steel beam with the H-shaped steel column at a construction site. According to the construction method, the on-site construction time is greatly saved, and the construction is facilitated.
Description
Technical field
The invention belongs to building structure technology field, particularly a kind of H section steel beam frame joint and construction method thereof of beam end portion constraint.
Background technology
H structural steel frame is to apply at present more a kind of steel structural form, is conventionally made up of H section steel beam and H steel column, and H section steel beam is connected by welding or bolt with H steel column.In order to improve the ductility of this kind of framework, meet Seismic Design Requirements, the end that is conventionally desirably in H section steel beam forms plastic hinge and ensures certain turning power.In order to ensure that steel frame realizes the design object of " strong column and weak beam ", " strong node weak member ", and the plastic hinge forming by the beam-ends ability that earthquake motion inputs that dissipates, conventionally take construction measure to force the plastic hinge of beam-ends.At present, the method that place of the plastic hinge is moved from cylinder mainly contains two kinds: 1, strengthen local beam-ends, as haunched slab, cover plate etc. being set at the beam-ends of H section steel beam; 2, weaken apart from the beam section of cylinder certain distance is local, as the local edge of a wing weakens or belly punches etc.But these measures often cause node region complex structure, weld seam quantity to increase, and need welding at the scene, have the deficiency that difficulty of construction is large and weldquality is difficult to guarantee.In addition, because heat affected zone steel fragility increases, often cause the girder steel edge of a wing to produce brittle fracture, and then reduced the deformability of H structural steel frame.
Summary of the invention
The present invention provides a kind of H shaped section steel frame node and construction method of beam end portion constraint for solving the technical problem existing in known technology, this node is on the basis that meets requirement for bearing capacity, have higher ductility and stressed reliable, this construction method has the advantages that to save on-site construction time and easy construction.
The technical scheme that the present invention takes for the technical problem existing in solution known technology is:
The H shaped section steel frame node of beam end portion constraint, comprise that end is welded with H section steel beam and the H steel column of end plate, the end plate of H section steel beam end is threaded connection part and is fixedly connected with H steel column, on H steel column, be positioned at position, joint cores and be welded with multiple transverse stiffeners, it is characterized in that: on the beam section external surface at H section steel beam near beam-ends, be wound with outer wrapping layer, described outer wrapping layer and H section steel beam surround two independent cavitys of border seal, in two cavitys, have built concrete.
The present invention can also adopt following technical scheme:
The length that is wound with the beam section of outer wrapping layer is 0.5-1 times of H section steel beam height.
Be wound with on the top flange of beam section of outer wrapping layer and the medial surface of bottom flange and be equipped with multiple pegs, multiple pegs are all mounted in concrete.
Described outer wrapping layer is carbon cloth outer wrapping layer or aryl fiber cloth outer wrapping layer.
The technical scheme that the present invention takes for the technical problem existing in solution known technology is:
The construction method of the H shaped section steel frame node of beam end portion constraint, is characterized in that, comprises following construction sequence:
1) in factory, end plate, peg and H section steel beam are welded, welding of peg, at the medial surface of top flange, H section steel beam end and bottom flange, by designing requirement prepared screw-bolt hole, welds transverse stiffener on end plate simultaneously on H steel column;
2) on the top flange of H section steel beam beam-ends preset beam section and the external surface of bottom flange, smear colloid, then in this preset beam section, be wound around carbon cloth or aryl fiber cloth, in winding process, on the surface of carbon cloth or aryl fiber cloth, smear supporting colloid, after winding, form outer wrapping layer, outer wrapping layer and H section steel beam surround two independent cavitys of border seal;
3) after colloid solidifies, concreting in two cavitys that outwards integument and H section steel beam surround;
4) when concrete strength reaches after designing requirement, transport H section steel beam and H steel column to job site, with threaded connector, H section steel beam and H steel column are connected into entirety at the construction field (site), form the H shaped section steel frame node of beam end portion constraint.
Advantage and good effect that the present invention has are:
1, be wrapped in the outer wrapping layer in the beam-ends beam section of H section steel beam and be cast in the concrete collaborative work in cavity, slowing down or suppress the cripling of H section steel beam, meeting on the basis that supporting capacity requires, having improved the Deformation capacity and ductility of structure.
2, do the used time at bearing load, be cast in the concrete participation work in cavity, make to move on the neutral axis of H section steel beam, on H shaped steel cross section, there is more subparticipation tension, thereby raising bending bearing capacity, force plastic hinge, it reduces the quantity of beam-ends weld seam to greatest extent than prior art.
3, be wound around outer wrapping layer and all in factory, complete to concreting in cavity, only needing at the construction field (site), H section steel beam and H steel column being threaded connection to part and being connected and fixed, therefore, significantly having saved on-site construction time and facilitated construction.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1, H section steel beam; 2, H steel column; 3, end plate; 4, transverse stiffener; 5, outer wrapping layer; 6, concrete; 7, peg.
Detailed description of the invention
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
The H shaped section steel frame node of beam end portion constraint, refers to Fig. 1-2, comprises H section steel beam 1 and H steel column 2, is welded with end plate 3 in the end of H section steel beam.The end plate of H section steel beam end is fixedly connected with H steel column with matching nut or other threaded connector by high-strength bolt.On H steel column, be positioned at position, joint cores and be welded with multiple transverse stiffeners 4.On beam section external surface at H section steel beam near beam-ends, be wound with outer wrapping layer 5, described outer wrapping layer and H section steel beam surround two independent cavitys of border seal, have built concrete 6 in two cavitys.Concrete preferably adopts the concrete with microdilatancy effect, like this, can fully fill the cavity that outer wrapping layer and H section steel beam surround.
In said structure, the length that is wound with the beam section of outer wrapping layer is preferably 0.5-1 times of H section steel beam height.This length value meets Plastic hinge length that beam-ends forms and is generally the requirement of 0.5-1 deck-molding doubly completely.
In said structure, be all further welded with multiple pegs 7 being wound with on the top flange of beam section of carbon cloth outer wrapping layer and the medial surface of bottom flange, multiple pegs are all mounted in concrete.Adopt this peg structure, can improve the collaborative work on concrete and the H section steel beam edge of a wing, make concrete better participate in pressurized to change the position of neutral axis.
In said structure, described outer wrapping layer is preferably carbon cloth outer wrapping layer or aryl fiber cloth outer wrapping layer.
The work progress of the H shaped section steel frame node of beam end portion constraint is:
1) in factory, end plate, peg and H section steel beam are welded, welding of peg is at the medial surface of top flange, H section steel beam end and bottom flange, on end plate, press designing requirement prepared screw-bolt hole, simultaneously on H steel column, weld transverse stiffener, wherein the arrangement requirement of stiffening rib and end plate and common H shaped section steel frame node is identical;
2) on the top flange of H section steel beam beam-ends preset beam section and the external surface of bottom flange, smear colloid, then in this preset beam section, be wound around carbon cloth or aryl fiber cloth, in winding process, on the surface of carbon cloth or aryl fiber cloth, smear supporting colloid, after winding, form outer wrapping layer, outer wrapping layer and H section steel beam surround two independent cavitys of border seal;
3) after colloid solidifies, concreting in two cavitys that outwards integument and H section steel beam surround;
4) when concrete strength reaches after designing requirement, transport H section steel beam and H steel column to job site, with high-strength bolt and matching nut or other threaded connector, H section steel beam and H steel column are connected into entirety at the construction field (site), form the H shaped section steel frame node of beam end portion constraint.
The H shaped section steel frame node of this beam end portion constraint has simple in structure, the advantage of easy construction, and it is not only applicable to newly-built general industry civilian construction structure, can be used for the structural strengthening of this type of steel frame yet, has broad application prospects.
Claims (5)
1. the H shaped section steel frame node of beam end portion constraint, comprise that end is welded with H section steel beam and the H steel column of end plate, the end plate of H section steel beam end is threaded connection part and is fixedly connected with H steel column, on H steel column, be positioned at position, joint cores and be welded with multiple transverse stiffeners, it is characterized in that: on the beam section external surface at H section steel beam near beam-ends, be wound with outer wrapping layer, described outer wrapping layer and H section steel beam surround two independent cavitys of border seal, in two cavitys, have built concrete.
2. the H shaped section steel frame node of beam end portion constraint according to claim 1, is characterized in that: the length that is wound with the beam section of outer wrapping layer is 0.5-1 times of H section steel beam height.
3. the H shaped section steel frame node of beam end portion according to claim 1 constraint, is characterized in that: be wound with on the top flange of beam section of outer wrapping layer and the medial surface of bottom flange and be equipped with multiple pegs, multiple pegs are all mounted in concrete.
4. the H shaped section steel frame node of beam end portion constraint according to claim 1, is characterized in that: described outer wrapping layer is carbon cloth outer wrapping layer or aryl fiber cloth outer wrapping layer.
5. the construction method of the H shaped section steel frame node of beam end portion constraint, is characterized in that, comprises following construction sequence:
1) in factory, end plate, peg and H section steel beam are welded, welding of peg, at the medial surface of top flange, H section steel beam end and bottom flange, by designing requirement prepared screw-bolt hole, welds transverse stiffener on end plate simultaneously on H steel column;
2) on the top flange of H section steel beam beam-ends preset beam section and the external surface of bottom flange, smear colloid, then in this preset beam section, be wound around carbon cloth or aryl fiber cloth, in winding process, on the surface of carbon cloth or aryl fiber cloth, smear supporting colloid, after winding, form outer wrapping layer, outer wrapping layer and H section steel beam surround two independent cavitys of border seal;
3) after colloid solidifies, concreting in two cavitys that outwards integument and H section steel beam surround;
4) when concrete strength reaches after designing requirement, transport H section steel beam and H steel column to job site, with threaded connector, H section steel beam and H steel column are connected into entirety at the construction field (site), form the H shaped section steel frame node of beam end portion constraint.
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| CN201410203534.4A CN103953123A (en) | 2014-05-14 | 2014-05-14 | H-shaped steel frame node with partially restricted beam end and construction method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790521A (en) * | 2015-05-02 | 2015-07-22 | 许耿群 | Novel steel-concrete combined beam |
| CN105040832A (en) * | 2015-08-07 | 2015-11-11 | 河海大学 | Connecting node for wide-flange H-section steel column added with horizontal draw bars on two sides and H-section steel beam |
| CN108661245A (en) * | 2018-05-23 | 2018-10-16 | 王昆 | A kind of vertical sleeve and use its bean column node |
| CN109281332A (en) * | 2018-11-06 | 2019-01-29 | 重庆大学 | A kind of wind-power tower foundation ring rib beam type basis based on composite structure |
| CN109914597A (en) * | 2019-04-18 | 2019-06-21 | 西安建筑科技大学 | A kind of fast spelling formula T-steel beams of concrete column connected node |
| WO2020103234A1 (en) * | 2018-11-23 | 2020-05-28 | 大连理工大学 | Calculation method for flexural capacity and moment-rotation curve of concrete-filled steel tubular column-steel beam through bolt connecting joint |
| CN111946082A (en) * | 2020-07-30 | 2020-11-17 | 湄洲湾职业技术学院 | Method for reinforcing beam-column mortise-tenon joints of wooden-structure ancient building |
| CN114278010A (en) * | 2021-12-24 | 2022-04-05 | 上海泰大建筑科技有限公司 | Steel and concrete part combined three-section steel beam structure and column structure thereof |
| CN107965055B (en) * | 2017-12-15 | 2023-10-03 | 北京万兴建筑集团有限公司 | Connecting node of H-shaped steel beam and steel reinforced concrete beam and manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104790521A (en) * | 2015-05-02 | 2015-07-22 | 许耿群 | Novel steel-concrete combined beam |
| CN105040832A (en) * | 2015-08-07 | 2015-11-11 | 河海大学 | Connecting node for wide-flange H-section steel column added with horizontal draw bars on two sides and H-section steel beam |
| CN107965055B (en) * | 2017-12-15 | 2023-10-03 | 北京万兴建筑集团有限公司 | Connecting node of H-shaped steel beam and steel reinforced concrete beam and manufacturing method |
| CN108661245A (en) * | 2018-05-23 | 2018-10-16 | 王昆 | A kind of vertical sleeve and use its bean column node |
| CN108661245B (en) * | 2018-05-23 | 2020-07-07 | 武汉东艺建筑设计有限公司 | Assembled beam column node |
| CN109281332A (en) * | 2018-11-06 | 2019-01-29 | 重庆大学 | A kind of wind-power tower foundation ring rib beam type basis based on composite structure |
| WO2020103234A1 (en) * | 2018-11-23 | 2020-05-28 | 大连理工大学 | Calculation method for flexural capacity and moment-rotation curve of concrete-filled steel tubular column-steel beam through bolt connecting joint |
| US11821806B2 (en) | 2018-11-23 | 2023-11-21 | Dalian University Of Technology | Calculation method of ultimate moment resistance and moment-rotation curve for steel beam to concrete-filled steel tube column connections with bidirectional bolts |
| CN109914597A (en) * | 2019-04-18 | 2019-06-21 | 西安建筑科技大学 | A kind of fast spelling formula T-steel beams of concrete column connected node |
| CN111946082A (en) * | 2020-07-30 | 2020-11-17 | 湄洲湾职业技术学院 | Method for reinforcing beam-column mortise-tenon joints of wooden-structure ancient building |
| CN114278010A (en) * | 2021-12-24 | 2022-04-05 | 上海泰大建筑科技有限公司 | Steel and concrete part combined three-section steel beam structure and column structure thereof |
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