CN109797872B - Double-steel-plate composite shear wall and composite floor slab connecting node connected by H-shaped steel - Google Patents
Double-steel-plate composite shear wall and composite floor slab connecting node connected by H-shaped steel Download PDFInfo
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- CN109797872B CN109797872B CN201910107455.6A CN201910107455A CN109797872B CN 109797872 B CN109797872 B CN 109797872B CN 201910107455 A CN201910107455 A CN 201910107455A CN 109797872 B CN109797872 B CN 109797872B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 210
- 239000010959 steel Substances 0.000 title claims abstract description 210
- 239000002131 composite material Substances 0.000 title claims abstract description 70
- 238000003466 welding Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The invention discloses a joint for connecting a double-steel-plate composite shear wall and a composite floor slab, wherein the joint comprises the double-steel-plate composite shear wall, the composite floor slab and an unequal-side H-shaped steel beam; the double-steel-plate combined shear wall is broken into an upper layer shear wall and a lower layer shear wall at the joint of the double-steel-plate combined shear wall and the combined floor slab; the unequal-edge H-shaped steel beam comprises a web plate, a shortened upper flange and a lengthened lower flange; two steel plates of the upper and lower shear walls are respectively and fixedly connected to the outer side surfaces of the upper flange and the lower flange of the unequal-side H-shaped steel beam; the upper steel bars of the composite floor slab are continuous at the unequal-side H-shaped steel beams and pass through the web plates of the unequal-side H-shaped steel beams; the lower steel bars or the bottom thin steel plates or profiled steel plates of the composite floor slab are broken at the unequal-side H-shaped steel beams and fixedly connected to the inner side surface of the lower flange of the composite floor slab. The invention adopts the H-shaped steel beam to connect the upper layer shear wall and the lower layer shear wall, fully exerts the characteristics of excellent ductility and good energy consumption performance, has simple structure and definite force transmission path, and accords with the trend of assembly.
Description
Technical Field
The invention relates to constructional engineering, in particular to a double-steel-plate composite shear wall and composite floor slab connecting node connected by H-shaped steel, which is a novel wall-plate connecting node form for connecting a shear wall and a floor slab by utilizing unequal-edge H-shaped steel beams when the double-steel-plate composite shear wall is connected with the composite floor slab.
Background
Currently, national policies are set aside to develop fabricated steel structure buildings. The double-steel-plate combined shear wall is gradually popularized and used as a side force resisting component of a high-rise steel structure house due to the high bearing capacity. The common double-steel-plate shear wall in the engineering is not broken in the whole structure, and is uniformly poured; however, the problem is that the bearing capacity is often far greater than required, the ductility is poor, and the performance is obviously reduced under the action of reciprocating load.
Meanwhile, the joint of the composite floor slab and the composite floor slab is also one of important stressed parts in a high-rise steel structure residential system. According to the related research literature at home and abroad, the number of the node structural forms is small, and most of the node structural forms are not suitable for the double-steel-plate composite shear wall with the thin thickness. Therefore, a node form which is simple in structure, clear in force transmission and easy to construct is needed to be provided.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a joint for connecting a double-steel-plate composite shear wall and a composite floor slab, wherein the double-steel-plate composite shear wall is connected with H-shaped steel. According to the invention, various node forms are comprehensively considered, characteristics of broken double-steel-plate combined shear walls are considered, the H-shaped steel beam is adopted to connect the upper layer shear wall and the lower layer shear wall, characteristics of excellent ductility and good energy consumption performance are fully brought into play, the structure is simple, the force transmission path is clear, and the assembly trend is met.
The technical scheme adopted by the invention is as follows: the double-steel-plate combined shear wall and combined floor slab connecting node comprises a double-steel-plate combined shear wall, a combined floor slab and an unequal-edge H-shaped steel beam;
The composite floor slab comprises a steel bar and a steel structure main body in the floor slab, wherein the steel bar and the steel structure main body in the floor slab comprise upper steel bars, lower steel bars and steel bar trusses, or comprise upper steel bars, lower steel bars, steel bar trusses and bottom thin steel plates, or comprise upper steel bars, lower steel bars and profiled steel plates, and the structural steel bars are configured according to different requirements; the double-steel-plate composite shear wall is broken and divided into an upper layer shear wall and a lower layer shear wall at the joint of the double-steel-plate composite shear wall and the composite floor slab, wherein the upper layer shear wall and the lower layer shear wall comprise two opposite steel plates, and a concrete pouring cavity is formed between the two steel plates;
The unequal-edge H-shaped steel beam comprises a web plate, a shortened upper flange and a lengthened lower flange; the two steel plates of the upper layer shear wall and the lower layer shear wall are respectively and fixedly connected to the outer side surfaces of the upper flange and the lower flange of the unequal-side H-shaped steel beam; the upper steel bars of the composite floor slab are continuous at the unequal-edge H-shaped steel beams and penetrate through webs of the unequal-edge H-shaped steel beams; the lower steel bars or the bottom steel plates or the profiled steel plates of the composite floor slab are broken at the unequal-side H-shaped steel beams, and the lower steel bars or the bottom steel plates or the profiled steel plates positioned at the two sides of the unequal-side H-shaped steel beams are respectively and fixedly connected to the inner side surfaces of the lower flanges of the unequal-side H-shaped steel beams.
Furthermore, shear bolts used for preventing the combined floor slab from sliding in the horizontal direction are arranged at two sides of the lower flange of the unequal-side H-shaped steel beam at intervals.
Further, transverse stiffening ribs are arranged at two sides of the web plate of the unequal-edge H-shaped steel beam at intervals.
Further, the length of the upper flange of the unequal-edge H-shaped steel beam is determined according to the thickness of the double-steel-plate combined shear wall, and welding seam sizes are reserved on two sides of the upper flange of the unequal-edge H-shaped steel beam.
Preferably, the length of the upper flange of the unequal-side H-shaped steel beam=the thickness of the double-steel-plate combined shear wall is +20mm.
Further, the length of the lower flange of the unequal-edge H-shaped steel beam=the length of the upper flange of the unequal-edge H-shaped steel beam +2l 1,120mm>l1 is more than or equal to 50mm, wherein l 1 is the overhanging length.
Furthermore, the web height of the unequal-edge H-shaped steel beam=the height +l 2,20mm≥l2 of the steel bars and the steel structure main body in the floor slab of the composite floor slab is more than or equal to 10mm, wherein l 2 is the new height.
Further, the spacing between the edges of the steel bars and the lower steel bars, the bottom thin steel plates and the profiled steel plates of the steel structure main body in the floor slab and the web plate of the unequal-edge H-shaped steel beam is not less than 20mm and does not exceed the outer edge of the steel plates of the double-steel-plate combined shear wall.
The beneficial effects of the invention are as follows:
(1) The node adopts a construction form of an unequal-side H-shaped steel girder inserted floor slab, so that the performance of the double-steel-plate combined shear wall is ensured, and the rigidity of a node domain is ensured;
(2) The joint force transmission path is clear, and the stress of the joint domain is mainly borne (pulled) by the lower flange (bent) of the H-shaped steel and the steel bar at the upper part of the floor slab;
(3) The node has simple integral structure, most of components can be prefabricated, and the node is easy to construct and accords with the trend of an assembled building.
Drawings
Fig. 1: the three-dimensional structure schematic diagram of the invention;
Fig. 2: the main schematic diagram of the node steel structure of the invention (the combined floor slab takes a detachable steel bar truss floor bearing plate with the span of 600mm as an example);
fig. 3: the invention is a schematic diagram of a front view structure;
Fig. 4: the invention is a schematic top view structure;
Fig. 5: the structure of the unequal-edge H-shaped steel girder (without transverse stiffening ribs) is schematically shown;
The drawings are marked: the composite shear wall comprises a 1-double steel plate composite shear wall, a 2-composite floor slab, a 3-unequal-edge H-shaped steel beam, 4-shear bolts, 5-steel bars in the floor slab and a steel structure main body and 6-steel plates.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:
As shown in fig. 1 to 5, the joint of the double-steel-plate composite shear wall and the composite floor slab connected by the H-shaped steel comprises a double-steel-plate shear wall 1, a composite floor slab 2 and an unequal-edge H-shaped steel beam 3.
The composite floor slab 2 comprises steel bars and a steel structure main body 5 in the floor slab, wherein the steel bars and the steel structure main body 5 in the floor slab comprise upper steel bars, lower steel bars and steel bar trusses, or comprise upper steel bars, lower steel bars, steel bar trusses and bottom thin steel plates, or comprise profiled steel plates with different thicknesses of the upper steel bars, the lower steel bars and the bottom, and the constructional steel bars can be configured according to different requirements. In this embodiment, the composite floor slab 2 is a detachable steel bar truss floor support plate.
The double-steel-plate composite shear wall 1 is broken and divided into an upper layer shear wall and a lower layer shear wall at the joint of the double-steel-plate composite shear wall 1 and the composite floor slab 2, and the upper layer shear wall and the lower layer shear wall comprise two opposite steel plates 6, and a concrete pouring cavity is formed between the two steel plates 6.
The unequal-sided H-beam 3 comprises a web, a shortened upper flange and an elongated lower flange. The two steel plates 6 of the upper layer shear wall and the lower layer shear wall are fixedly connected to the outer side surfaces of the upper flange and the lower flange of the unequal-side H-shaped steel beam 3 in a welding mode respectively. The upper steel bars of the composite floor slab 2 are continuous at the unequal-edge H-shaped steel beams 3 and pass through the web plates of the unequal-edge H-shaped steel beams 3. The lower steel bars or the bottom steel plates or the profiled steel plates of the composite floor slab 2 are broken at the unequal-edge H-shaped steel beams 3, and the lower steel bars or the bottom steel plates or the profiled steel plates positioned at two sides of the unequal-edge H-shaped steel beams 3 are fixedly connected to the inner side surfaces of the lower flanges of the unequal-edge H-shaped steel beams 3 in a welding mode respectively. Shear bolts 4 used for preventing the combined floor slab 2 from sliding in the horizontal direction are arranged at two sides of the lower flange of the unequal-side H-shaped steel beam 3 at intervals.
The node steel structure main body of the invention can be prefabricated in a factory and assembled on site, as shown in figure 2. Firstly, connecting two steel plates 6 with an unequal H-shaped steel beam 3 through fillet welds, positioning shear bolts 4 and lower steel bars (or bottom thin steel plates or profiled steel plates) of a composite floor slab 2 in the unequal H-shaped steel beam 3, and welding the shear bolts 4 and the lower steel bars (or the bottom thin steel plates or the profiled steel plates) with the inner surface of the lower flange of the unequal H-shaped steel beam 3; while the upper reinforcing bars of the composite floor slab 2 need to pass completely through the web. The double-steel-plate combined shear wall 1 is thinner (< 200 mm), and is more in line with the development trend of the current fabricated steel structure house. The spacing between the edges of the steel bars and the lower steel bars, the bottom thin steel plates and the profiled steel sheets in the floor and the web plates of the unequal-edge H-shaped steel beams 3 is not smaller than 20mm and is not smaller than 50mm in the overhanging edge of the lower flange of the unequal-edge H-shaped steel beams 3, and the performance optimal distance interval is that the spacing between the edge and the web plates is not smaller than 20mm and is not larger than the outer edge of the steel plates 6 of the double-steel-plate combined shear wall 1. The length of the upper flange of the unequal-side H-shaped steel beam 3 is determined according to the thickness of the double-steel-plate combined shear wall 1, and a proper welding seam size is reserved on two sides, and the upper flange length=the thickness of the double-steel-plate combined shear wall 1 +20mm is generally taken. The lower flange plays a role in supporting the composite floor slab 2, and the length of the lower flange is that the length of the upper flange is +2l 1,120mm>l1 is more than or equal to 50mm, wherein l 1 is the overhanging length, namely the length exceeding the double-steel-plate composite shear wall 1; the shorter length of the upper flange is a field welding consideration. The height of the web is determined by the self height of the composite floor slab 2, and is the height +l 2,20mm≥l2 of the steel bars and the steel structure main body 5 in the floor slab of the composite floor slab 2 which is more than or equal to 10mm, wherein l 2 is the newly added height. The thickness of the flange and the web of the unequal-side H-shaped steel beam 3 meets the requirements of the width-thickness ratio and the high-thickness ratio. Transverse stiffening ribs which are arranged at intervals can be added at two sides of the web plate in the unequal-side H-shaped steel beam 3, and the requirements of the overhanging length, the thickness and the rigidity are met.
In the practical engineering of the node, the double-steel-plate combined shear wall is firstly installed and poured, so that the overall stability of the structure is ensured. And uniformly installing, paving and pouring the composite floor slab.
The H-shaped steel beam is processed in an unequal-edge mode, the lower flange is lengthened to support the floor slab, and the upper flange is shortened to facilitate welding of an internal structure. Meanwhile, the height of the web plate is adjusted, and transverse stiffening ribs are arranged, so that the composite floor slab 2 with different heights, spans and widths can be adapted. The steel bars at the upper part of the floor pass through the web plate of the unequal-edge H-shaped steel beam 3, and the steel bars or the thin steel plates at the lower part are welded on the inner side surface of the lower flange of the unequal-edge H-shaped steel beam 3, so that the integral stress of the node area is ensured, and the force transmission mode is definite. In the engineering, steel bars and a steel structure main body 5, an unequal-side H-shaped steel beam 3 and a double steel plate 6 in the floor slab can be prefabricated and assembled on site, wherein the steel bars can be freely bound and distributed in a construction site in the combined floor slab 2, and then concrete is uniformly poured according to the construction sequence; the rigidity of the joints is ensured, the construction difficulty is reduced, and the method accords with the trend of the assembled steel structure building.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are within the scope of the present invention.
Claims (6)
1. The double-steel-plate composite shear wall and composite floor slab connecting node connected by H-shaped steel comprises a double-steel-plate composite shear wall (1) and a composite floor slab (2), wherein the composite floor slab (2) comprises a steel bar and a steel structure main body (5) in the floor slab, the steel bar and the steel structure main body (5) in the floor slab comprise upper steel bars, lower steel bars and steel bar trusses, or comprise the upper steel bars, the lower steel bars, the steel bar trusses and bottom thin steel plates, or comprise the upper steel bars, the lower steel bars and profiled steel plates, and the construction steel bars are configured according to different requirements; the double-steel-plate combined shear wall (1) is broken and divided into an upper layer shear wall and a lower layer shear wall at the joint of the double-steel-plate combined shear wall and the combined floor (2), wherein the upper layer shear wall and the lower layer shear wall comprise two opposite steel plates (6), and a concrete pouring cavity is formed between the two steel plates (6);
The steel structure further comprises an unequal-side H-shaped steel beam (3), wherein the unequal-side H-shaped steel beam (3) comprises a web plate, a shortened upper flange and a lengthened lower flange; the two steel plates (6) of the upper layer shear wall and the lower layer shear wall are respectively and fixedly connected to the outer side surfaces of the upper flange and the lower flange of the unequal-side H-shaped steel beam (3); the upper steel bars of the composite floor slab (2) are continuous at the unequal-edge H-shaped steel beams (3) and penetrate through webs of the unequal-edge H-shaped steel beams (3); the lower steel bars or the bottom steel plates or the profiled steel plates of the composite floor slab (2) are broken at the unequal-edge H-shaped steel beams (3), and the lower steel bars or the bottom steel plates or the profiled steel plates positioned at two sides of the unequal-edge H-shaped steel beams (3) are respectively fixedly connected to the inner side surfaces of the lower flanges of the unequal-edge H-shaped steel beams (3);
Shear bolts (4) for preventing the combined floor slab (2) from sliding horizontally are arranged at two sides of the lower flange of the unequal-side H-shaped steel beam (3) at intervals;
Transverse stiffening ribs are arranged at two sides of the web plate of the unequal-side H-shaped steel beam (3) at intervals.
2. The joint of the double-steel-plate composite shear wall and the composite floor slab connected by the H-shaped steel according to claim 1, wherein the length of the upper flange of the unequal-edge H-shaped steel beam (3) is determined according to the thickness of the double-steel-plate composite shear wall (1), and welding seam sizes are reserved on two sides of the upper flange of the unequal-edge H-shaped steel beam (3).
3. The joint of the double-steel-plate composite shear wall and the composite floor slab connected by the H-shaped steel according to claim 2, wherein the upper flange length of the unequal-edge H-shaped steel beam (3) is equal to +20mm in thickness of the double-steel-plate composite shear wall (1).
4. The joint of a double-steel-plate composite shear wall and a composite floor slab connected by H-shaped steel according to claim 1, wherein the lower flange length of the unequal-edge H-shaped steel beam (3) is equal to +2l1, 120mm > l1 is equal to or greater than 50mm, and l1 is the overhanging length.
5. The joint of a double-steel-plate composite shear wall and a composite floor slab connected by H-shaped steel according to claim 1, wherein the web height of the unequal-side H-shaped steel beam (3) is equal to +l2 of the steel bar and steel structure main body (5) in the floor slab of the composite floor slab (2), and the height is 20mm or more and equal to l2 or more and equal to 10mm, wherein l2 is the newly added height.
6. The joint of a double steel plate composite shear wall and a composite floor slab connected by H-section steel according to claim 1, wherein the spacing between the edges of the steel bars and the lower steel bars, the bottom steel sheet and the profiled steel sheet of the steel structure main body (5) in the floor slab and the web of the unequal-sided H-section steel beam (3) is not less than 20mm and does not exceed the outer edge of the steel plate (6) of the double steel plate composite shear wall (1).
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| CN201910107455.6A CN109797872B (en) | 2019-02-02 | 2019-02-02 | Double-steel-plate composite shear wall and composite floor slab connecting node connected by H-shaped steel |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439122A (en) * | 2019-08-21 | 2019-11-12 | 沈阳建筑大学 | A kind of precast floor slab and H profile steel beam connecting structure and connection method |
| CN111945900A (en) * | 2020-08-25 | 2020-11-17 | 长安大学 | Dog bone-honeycomb formula combination flat beam connected node |
| CN113431411A (en) * | 2021-05-31 | 2021-09-24 | 北京建筑大学 | Energy-consuming dry-type connection concrete shear wall system and construction method |
| CN113846800B (en) * | 2021-11-16 | 2023-02-28 | 中铁十六局集团电气化工程有限公司 | Prefabricated profile steel horizontal beam and prefabricated floor slab connecting structure and connecting method |
| CN115262811B (en) * | 2022-09-09 | 2023-08-22 | 华北水利水电大学 | Construction method of transverse steel reinforced concrete combined shear wall |
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| CN209874082U (en) * | 2019-02-02 | 2019-12-31 | 天津大学 | Double-steel-plate combined shear wall and combined floor slab connecting joint connected by H-shaped steel |
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| US20150330075A1 (en) * | 2012-12-21 | 2015-11-19 | Kunshan Ecological Building Tecnology Co., Ltd. | Fully Assembled, Fully Cast-in-Place, Composite-Type House and Construction Method Thereof |
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