CN107083807A - A kind of endplate connections node - Google Patents
A kind of endplate connections node Download PDFInfo
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- CN107083807A CN107083807A CN201710449912.0A CN201710449912A CN107083807A CN 107083807 A CN107083807 A CN 107083807A CN 201710449912 A CN201710449912 A CN 201710449912A CN 107083807 A CN107083807 A CN 107083807A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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- Civil Engineering (AREA)
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Abstract
Description
技术领域technical field
本发明属于结构工程钢结构领域,具体涉及一种外伸式端板节点。The invention belongs to the field of structural engineering steel structures, and in particular relates to an overhanging end plate node.
背景技术Background technique
随着多高层、超高层建筑的大量兴建,钢结构应用越来越多。结构设计中梁柱节点常采用全焊接或翼缘焊接—腹板螺栓连接,节点区强度、刚度较大。但对于地震及火灾作用下节点区延性、变形能力及安全储备考虑不够充分,存在大震作用下节点断裂破坏导致建筑物破坏、倒塌的隐患,与“大震不倒”的抗震设计原则不符,不具备二次防护能力。如何提高钢结构梁柱节点在地震及火灾作用下的延性、变形能力、耗能能力和节点安全储备是钢结构设计、施工中亟待解决的问题。With the construction of a large number of multi-high-rise and super high-rise buildings, the application of steel structures is increasing. In structural design, beam-column joints are often fully welded or flange welded-web bolted, and the strength and stiffness of the joint area are relatively high. However, insufficient consideration is given to the ductility, deformation capacity and safety reserve of the joint area under the action of earthquakes and fires, and there are hidden dangers of building damage and collapse caused by joint fracture damage under the action of a large earthquake, which is inconsistent with the seismic design principle of "do not collapse after a large earthquake". There is no secondary protection capability. How to improve the ductility, deformation capacity, energy dissipation capacity and joint safety reserve of steel structure beam-column joints under the action of earthquake and fire is an urgent problem to be solved in the design and construction of steel structures.
发明内容Contents of the invention
有鉴于此,本发明的目的在于提供一种外伸式端板节点,以提高钢结构连接的安全性和耗能能力。In view of this, the object of the present invention is to provide an overhanging end plate node to improve the safety and energy dissipation capacity of the steel structure connection.
为达到上述目的,本发明提供如下技术方案:一种外伸式端板节点,包括钢梁、钢柱、角钢、端板及螺栓,所述钢梁为工字型钢梁,所述钢柱为H型钢柱,所述端板焊接在钢梁端部,所述角钢包括L型角钢及顶底角钢,所述L型角钢、顶底角钢及螺栓均为不锈钢材质;所述端板为外伸式端板,所述钢梁腹板与翼缘、端板、钢柱翼缘及角钢上对应设有用于穿过螺栓的螺栓孔,所述L型角钢设置在钢梁腹板与端板间,L型角钢一边通过螺栓与钢梁腹板连接,另一边通过螺栓与端板及钢柱翼缘相连接;所述顶底角钢有两个,对应设置在钢梁翼缘两侧,各顶底角钢的一边通过螺栓与钢梁翼缘连接,另一边通过螺栓与端板及钢柱翼缘相连接。In order to achieve the above object, the present invention provides the following technical solutions: an outstretched end plate node, including steel beams, steel columns, angle steel, end plates and bolts, the steel beams are I-shaped steel beams, and the steel columns It is an H-shaped steel column, and the end plate is welded at the end of the steel beam. The angle steel includes L-shaped angle steel and top and bottom angle steel. The L-shaped angle steel, top and bottom angle steel and bolts are all made of stainless steel; the end plate is an outer Extended end plate, the steel beam web and flange, end plate, steel column flange and angle steel are correspondingly provided with bolt holes for passing bolts, and the L-shaped angle steel is arranged on the steel beam web and end plate In between, one side of the L-shaped angle steel is connected to the web of the steel beam through bolts, and the other side is connected to the end plate and the flange of the steel column through bolts; there are two top and bottom angle steels, which are correspondingly arranged on both sides of the steel beam flange. One side of the angle steel is connected to the flange of the steel beam through bolts, and the other side is connected to the end plate and the flange of the steel column through bolts.
进一步,所述工字型钢梁由钢板焊接而成。Further, the I-shaped steel beam is welded by steel plates.
进一步,所述工字型钢梁为轧制型钢。Further, the I-shaped steel beam is rolled steel.
进一步,所述H型钢柱由钢板焊接而成。Further, the H-shaped steel column is welded by steel plates.
进一步,所述H型钢柱为轧制型钢。Further, the H-shaped steel column is rolled steel.
进一步,所述螺栓为高强不锈钢螺栓。Further, the bolts are high-strength stainless steel bolts.
本发明的有益效果在于:The beneficial effects of the present invention are:
(1)能够有效保障结构系统的安全性和整体性,增加了钢连接区域的延性、抗火能力和耗能能力。(1) It can effectively guarantee the safety and integrity of the structural system, and increase the ductility, fire resistance and energy dissipation capacity of the steel connection area.
(2)该节点包括两种连接类型(半刚性连接和柔性连接),同时具备两种破坏机理,允许梁端端板在极端荷载工况中发生破坏,由柔性连接提供较好变形能力和耐火极限。(2) The joint includes two connection types (semi-rigid connection and flexible connection), and has two failure mechanisms at the same time, allowing the end plate of the beam end to fail under extreme load conditions, and the flexible connection provides better deformation capacity and fire resistance.
(3)采用装配式钢结构连接,构件在工厂预制,制作质量高,可实现现场快速装配,节省工期。(3) Prefabricated steel structure connection is adopted, and the components are prefabricated in the factory, with high production quality, which can realize rapid assembly on site and save construction period.
该装配式钢结构刚度大、结构稳定性好,连接受力性能优越,可用于钢结构抗火体系和高烈度地震区高层钢结构建筑中,具有较为广阔的应用前景。The prefabricated steel structure has high rigidity, good structural stability, and superior mechanical performance of connections. It can be used in steel structure fire-resistant systems and high-rise steel structure buildings in high-intensity earthquake areas, and has broad application prospects.
附图说明Description of drawings
为了使本发明的目的、技术方案和有益效果更加清楚,本发明提供如下附图进行说明:In order to make the purpose, technical scheme and beneficial effect of the present invention clearer, the present invention provides the following drawings for illustration:
图1为本发明的结构示意图;Fig. 1 is a structural representation of the present invention;
图2为钢梁的结构示意图;Fig. 2 is the structural representation of steel girder;
图3为钢柱的结构示意图;Fig. 3 is the structural representation of steel column;
图4为L型角钢的结构示意图;Fig. 4 is the structural representation of L-shaped angle steel;
图5为顶底角钢的结构示意图;Fig. 5 is the structural representation of top and bottom angle steel;
图6为端板的结构示意图。Fig. 6 is a structural schematic diagram of the end plate.
具体实施方式detailed description
下面将结合附图,对本发明的优选实施例进行详细的描述。The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
如图所示,本发明中的外伸式端板节点,包括钢梁1、钢柱2、角钢、端板4及螺栓5,所述钢梁1为工字型钢梁,所述钢柱2为H型钢柱,所述端板4焊接在钢梁1端部,所述端板4为外伸式端板,所述角钢包括L型角钢3及顶底角钢7,所述L型角钢3、顶底角钢7及螺栓5均为不锈钢材质;所述钢梁1腹板与翼缘、端板4、钢柱2翼缘及角钢上对应设有用于穿过螺栓的螺栓孔6,所述L型角钢3设置在钢梁1腹板与端板4间,L型角钢3一边通过螺栓5与钢梁1腹板连接,另一边通过螺栓5与端板4及钢柱2翼缘相连接;所述顶底角钢7有两个,对应设置在钢梁1翼缘两侧,各顶底角钢7的一边通过螺栓5与钢梁1翼缘连接,另一边通过螺栓5与端板4及钢柱2翼缘相连接。As shown in the figure, the extended end plate node in the present invention includes steel beam 1, steel column 2, angle steel, end plate 4 and bolt 5, the steel beam 1 is an I-shaped steel beam, and the steel column 2 is an H-shaped steel column, the end plate 4 is welded on the end of the steel beam 1, the end plate 4 is an extended end plate, the angle steel includes an L-shaped angle steel 3 and a top and bottom angle steel 7, and the L-shaped angle steel 3. The top and bottom angle steels 7 and the bolts 5 are made of stainless steel; the steel beam 1 web and flange, the end plate 4, the steel column 2 flange and the angle steel are correspondingly provided with bolt holes 6 for passing through the bolts. The L-shaped angle steel 3 is arranged between the web plate of the steel beam 1 and the end plate 4, and the L-shaped angle steel 3 is connected with the web plate of the steel beam 1 through the bolt 5 on one side, and connected with the end plate 4 and the flange of the steel column 2 through the bolt 5 on the other side. Connection; there are two top and bottom angle steels 7, which are correspondingly arranged on both sides of the flange of the steel beam 1. One side of each top and bottom angle steel 7 is connected to the flange of the steel beam 1 through bolts 5, and the other side is connected to the end plate 4 through bolts 5. And steel column 2 flange connection.
本发明中,钢梁1与端板4间既有焊接,又有通过不锈钢L型角钢、不锈钢顶底角钢及不锈钢螺栓的二次连接,钢梁1与钢柱2间则对应通过不锈钢螺栓、焊接端板及两种角钢连接起来。一方面,工字型钢梁1与H型钢柱2的连接方式采用了两种不同钢材材料,包括普通钢材(钢梁、钢柱及端板)和耐火性不锈钢材料(角钢及螺栓),从而增强了钢连接的变形能力和耐火能力。另一方面,工字型钢梁1与H型钢柱2的连接方式采用了组合钢连接类型,包括半刚性连接和柔性连接两种连接类型,同时具备两种破坏机理。In the present invention, the steel beam 1 and the end plate 4 are not only welded, but also have a secondary connection through stainless steel L-shaped angle steel, stainless steel top and bottom angle steel and stainless steel bolts, and the steel beam 1 and steel column 2 are correspondingly connected by stainless steel bolts, Welded end plates and two angle steels are connected. On the one hand, two different steel materials are used for the connection between the I-shaped steel beam 1 and the H-shaped steel column 2, including ordinary steel (steel beams, steel columns, and end plates) and refractory stainless steel (angle steel and bolts), so that Enhanced deformation and fire resistance of steel connections. On the other hand, the connection method between the I-shaped steel beam 1 and the H-shaped steel column 2 adopts the combined steel connection type, including semi-rigid connection and flexible connection, and has two failure mechanisms at the same time.
该连接方式克服了传统节点在高温作用下因焊缝残余应力和热影响区域影响发生钢板连接处开裂现象;由于角钢3及螺栓5为不锈钢材质,增强了钢连接区域的延性和鲁棒性,使得在火灾作用下,节点端板即使发生破坏也拥有足够的延性转换受力机理形成二次防护能力,即在钢梁两端形成塑性铰,大大提高了工字型钢梁的协同变形能力,形成悬链性效应保证结构不会发生连续性倒塌;即保障了连接节点在端板焊缝区域发生破坏后,连接节点仍以铰接的形式继续工作。该钢结构连接节点也可以用于抗震区域,利用不锈钢角钢优异的延性、变形能力和二次防护机理,在地震荷载或者往复荷载作用下耗散多余能量,保障结构的安全性和整体性。This connection method overcomes the phenomenon of cracking at the steel plate connection of the traditional joint due to the residual stress of the weld and the heat-affected zone under high temperature; because the angle steel 3 and the bolt 5 are made of stainless steel, the ductility and robustness of the steel connection area are enhanced. Under the action of fire, even if the joint end plate is damaged, it has sufficient ductility to transfer the stress mechanism to form a secondary protection capability, that is, a plastic hinge is formed at both ends of the steel beam, which greatly improves the collaborative deformation capacity of the I-shaped steel beam. The catenary effect is formed to ensure that the structure will not undergo continuous collapse; that is, it ensures that the connecting nodes continue to work in the form of hinges after the damage occurs in the weld area of the end plate. The steel structure connection node can also be used in anti-seismic areas, using the excellent ductility, deformation capacity and secondary protection mechanism of stainless steel angle steel to dissipate excess energy under seismic load or reciprocating load to ensure the safety and integrity of the structure.
本发明中的工字型钢梁及H型钢柱可由钢板焊接而成,也可采用轧制型钢。可在现场直接安装,施工速度较快且构件制作质量高。The I-shaped steel beam and the H-shaped steel column in the present invention can be formed by welding steel plates, and rolled steel can also be used. It can be installed directly on site, the construction speed is fast and the components are of high quality.
优选的,螺栓为高强不锈钢螺栓,可进一步改善螺栓性能。Preferably, the bolts are high-strength stainless steel bolts, which can further improve the performance of the bolts.
本实施例中工字型钢梁及H型钢柱均由钢板焊接而成,其装配程序如下:In the present embodiment, the I-shaped steel beam and the H-shaped steel column are all welded by steel plates, and the assembly procedure is as follows:
a.在工厂用钢板焊接成工字型钢梁1,并在钢梁腹板及翼缘上开螺栓孔6;a. Weld the I-shaped steel beam 1 with steel plates in the factory, and open bolt holes 6 on the web and flange of the steel beam;
b.在工厂用钢板焊接成H型钢柱2,并在钢柱翼緣上开螺栓孔,螺栓孔直径和位置与工字型钢梁端板上的螺栓孔保持一致;b. Weld the H-shaped steel column 2 with steel plates in the factory, and open bolt holes on the flange of the steel column. The diameter and position of the bolt holes are consistent with the bolt holes on the end plate of the I-shaped steel beam;
c.在工厂切割矩形端板4一块,并在端板上开螺栓孔,螺栓孔位置及直径与H型钢柱上螺栓孔保持一致;将端板4焊接于工字型钢梁1开孔侧一端,并将其中心对齐;c. Cut a rectangular end plate 4 in the factory, and open bolt holes on the end plate. The position and diameter of the bolt holes are consistent with the bolt holes on the H-shaped steel column; weld the end plate 4 to the opening side of the I-shaped steel beam 1 one end, and align their centers;
d.在工厂制作不锈钢L型角钢3及顶底角钢7,并在L型角钢3及顶底角钢7上开螺栓孔,螺栓孔位置及直径分别与钢柱翼緣及钢梁腹板、钢梁翼缘上的螺栓孔位置及大小保持一致;d. Make stainless steel L-shaped angle steel 3 and top and bottom angle steel 7 in the factory, and open bolt holes on the L-shaped angle steel 3 and top and bottom angle steel 7. The position and size of the bolt holes on the beam flange shall be consistent;
e.用不锈钢螺栓5分别连接不锈钢L型角钢3、顶底角钢7、外伸式端板4和H型钢柱翼緣,并连接钢梁腹板与翼缘。e. Use stainless steel bolts 5 to connect stainless steel L-shaped angle steel 3, top and bottom angle steel 7, overhanging end plate 4 and H-shaped steel column flange, and connect the steel beam web and flange.
总的来说,该节点克服了传统节点在火灾及和地震作用下焊缝连接区域容易发生破坏的不足,通过采用两种不同钢材和两种破坏机理模式,互相补充,保障了钢结构体系的整体性和完整性,可用于抗火和高烈度地震区钢结构体系中;通过L型角钢及顶底角钢对钢梁及外伸式端板进行二次连接以及节点形式上改变,大幅度提高了该节点的抗弯承载能力和刚度,可做刚接节点假定。采用现场装配式施工方法,还有助于节省工期。In general, this joint overcomes the shortcomings of traditional joints that are prone to damage in the weld joint area under the action of fire and earthquake. By using two different steel materials and two failure mechanism modes, they complement each other and ensure the integrity of the steel structure system. Integrity and integrity can be used in steel structure systems in fire-resistant and high-intensity earthquake areas; through L-shaped angle steels and top and bottom angle steels, the steel beams and extended end plates are connected twice and the joint form is changed, greatly improving Given the flexural bearing capacity and stiffness of the node, a rigidly connected node can be assumed. The use of on-site assembly construction methods also helps to save construction time.
最后说明的是,以上优选实施例仅用以说明本发明的技术方案而非限制,尽管通过上述优选实施例已经对本发明进行了详细的描述,但本领域技术人员应当理解,可以在形式上和细节上对其作出各种各样的改变,而不偏离本发明权利要求书所限定的范围。Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in terms of form and Various changes may be made in the details without departing from the scope of the invention defined by the claims.
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| CN110512736A (en) * | 2019-08-28 | 2019-11-29 | 南华大学 | A steel end plate connection H-section FRP beam-column joint and its construction method |
| CN110777936A (en) * | 2019-11-22 | 2020-02-11 | 东华理工大学 | Connecting structure and mounting method of box steel column and unequal-height I-shaped steel beam |
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