CN204040214U - Compound concrete filled steel tube outer ring plate beam-column connection - Google Patents

Abstract

The utility model's composite steel tube concrete outer ring plate beam-column connection node relates to the connection of composite steel tube concrete columns and steel beam components, and belongs to the technical fields of construction engineering and composite structures. The node is composed of composite steel tube concrete columns, steel beams and force transmission members. The compound steel tube concrete column is composed of inner and outer steel tubes and internally poured concrete. The steel beam is composed of upper and lower flanges and webs, and the steel beam is arranged transversely and longitudinally around the compound steel tube concrete column. The force transmission component is composed of an outer ring plate and an anchoring web. An outer ring plate is welded around the outer wall of the outer steel pipe and welded to the upper and lower flanges of the steel beam; at the same time, an anchor web is welded between the inner and outer steel pipes at the position facing the steel beam web, the outer steel pipe is slotted, and the extended part of the anchor web is connected to the outer The ring plate and steel beam web are fixedly connected. The node of the utility model can effectively transmit the tension and pressure of the upper and lower flanges of the steel beam, has strong shear resistance, good node integrity, clear force transmission path, simple processing and manufacturing, and good technical and economic benefits.

Description

Beam-to-column joints of composite steel pipe concrete outer ring slab

technical field

The utility model belongs to the technical field of building structure engineering, in particular to a joint structure design of a composite steel pipe concrete column and a steel beam.

Background technique

Duplex concrete-filled steel tube columns have superior fire resistance, strong seismic performance, and the design does not consider the limit of the axial compression ratio. It is a structural form worthy of development, and it is a promising structure for long-span public buildings and medium and high-rise buildings. form. One of the key difficulties in the popularization and application of composite steel tube concrete columns is to solve the connection problem with the beam-slab structure. Only by solving the joint problem can the composite steel tube concrete structure be developed faster. Concrete-filled steel tube joints have been widely studied and applied in practice for decades, but there are few domestic and foreign related literature reports on composite steel tube concrete-filled steel beam joints. The utility model is based on relatively mature research results of concrete-filled steel pipe joints, relates to a steel beam joint connection mode that meets modern structural design requirements, and can lay a foundation for engineering applications of composite steel pipe concrete structures.

Utility model content

The purpose of the utility model is to aim at the deficiencies of the existing technology and utilize the technical characteristics of the existing traditional steel tube concrete column and steel beam connection node to provide a composite steel tube concrete outer ring plate beam column connection node. The node of the utility model has strong integrality and superior mechanical performance, and meanwhile, the design is simple, the manufacture is convenient and the cost is low.

The composite steel pipe concrete outer ring plate beam-column connection node of the utility model is composed of a composite steel pipe concrete column, a steel beam and a force transmission member. The composite steel pipe concrete column includes an outer steel pipe 1, an inner steel pipe 2 and an inner poured concrete 3 The steel beam 4 includes upper and lower flanges and webs; the force transmission member is composed of an outer ring plate 5 and an anchor web 6; it is characterized in that a circle of outer ring plates 5 are welded on the outer wall of the outer steel pipe, and Butt weld connection of upper and lower flanges of steel beams. At the same time, the vertical anchoring web 6 is welded between the inner and outer steel pipes, buried in the concrete 3, and its position is just corresponding to the web of the steel beam 4 arranged vertically and horizontally; The outer ring plate 5 is connected by double-sided fillet welds, and the vertical connection plate 7 is connected laterally with the web plate of the steel beam 4 by bolt welding with high-strength bolts 8 . For more clear force transmission, the anchoring web 6 is higher than the web of the steel beam 4 up and down between the inner and outer steel pipes, and the part protruding from the outer steel pipe is at the same height as the web of the steel beam 4 . The shear force in the joint area is transmitted by the outer steel pipe wall, the core concrete in the joint area and the anchor web; the tensile force on the flange of the steel beam is transmitted to the outer steel pipe web through the outer ring plate, and the load is transferred to the joint core area through the anchor web.

The composite steel pipe concrete column is in the cross-section form of inner circle and outer square, inner square and outer square, or inner rectangle and outer rectangle. The steel beam is an I-shaped steel beam or a box-shaped steel beam. The concrete is ordinary concrete or high-strength concrete or self-compacting concrete. The outer ring plate is an octagonal ring plate whose hypotenuse is a straight line or an arc.

Beneficial effect:

1. The utility model is especially suitable for the composite steel pipe concrete center column of the building structure. The new composite steel pipe concrete column is connected with the outer ring plate of the steel beam. The existence of the outer ring plate inherits the characteristics of simple connection between itself and the beam, which can effectively Transmit the tension and pressure of the upper and lower flanges of the steel beam; anchoring the web can effectively improve the stiffness and strength of the joint. The joint has simple structure, convenient processing and installation, and clear and reliable force transmission, which is beneficial to the application of composite steel pipe concrete structures.

2. The utility model is easy to realize the design purpose of strong columns, weak beams and stronger joints. It can adapt to the needs of modern industrialized production, especially with the commissioning of large-scale production lines of cold-formed thin-walled steel pipes and the development of residential steel structures, the advantages of the utility model will be better brought into play.

Description of drawings

Fig. 1 is the sectional view of composite steel pipe concrete column of the present utility model;

Figure 2 is a schematic plan view of the beam-column joints of the composite steel pipe concrete outer ring slab;

Fig. 3 is a schematic diagram of the I-I section of the node in Fig. 2 .

Detailed ways

The utility model is described in detail below with reference to accompanying drawing.

The utility model is composed of a composite steel pipe concrete column, a steel beam and a force transmission member. The compound concrete-filled steel pipe column includes an outer steel pipe 1, an inner steel pipe 2, and inner poured concrete 3, as shown in Figure 1, which is a cross-section of a compound steel pipe concrete column with an inner circle and an outer square.

As shown in Fig. 2-Fig. 3, the composite steel pipe concrete column includes outer steel pipe 1, inner steel pipe 2 and concrete poured inside 3; steel beam 4 includes upper and lower flanges and web; It is composed of an anchor web 6; an outer ring plate 5 is welded on the outer wall of the outer steel pipe 1, and is connected with the butt weld of the upper and lower flanges of the steel beam 4. At the same time, the vertical anchoring web 6 welded between the inner and outer steel pipes is buried in the concrete 3, and its position is just corresponding to the webs of the steel beams 4 arranged vertically and horizontally; The outer ring plate 5 is connected by double-sided fillet welds, and the vertical connection plate 7 is connected laterally with the web plate of the steel beam 4 by bolt welding with high-strength bolts 8 . As shown in Figure 2, the beveled edge of the outer ring plate adopts arc lines to prevent stress concentration and beautiful appearance, and the outer ring plate can also directly adopt oblique straight lines to achieve the effect of convenient construction; Clearly, the anchoring web 6 is higher than the web of the steel beam 4 up and down between the inner and outer steel pipes, and the part protruding from the outer steel pipe is at the same height as the web of the steel beam 4 . The shear force in the joint area is transmitted by the outer steel pipe wall, the core concrete in the joint area and the anchor web; the axial force on the flange of the steel beam is transmitted to the outer steel pipe web through the outer ring plate, and the load is transferred to the joint core area through the anchor web .

The composite steel pipe concrete column involved in the utility model can adopt the section form of inner circle and outer square or inner square and outer square or inner rectangle and outer rectangle; the inner steel pipe and the outer steel pipe can adopt thin-walled steel pipe; the steel beam can be I-shaped steel beam or Box-shaped steel beams; concrete can be ordinary concrete, high-strength concrete or self-compacting concrete; the outer ring plate is an octagonal ring plate with a straight line or arc on the hypotenuse. The force-transmitting member realizing the joint rigid connection between the compound steel pipe concrete column and the steel beam includes the outer ring plate and the anchor web, and the joint force transmission system formed by their joint action can ensure the complete force transmission of the joint and achieve the purpose of the rigid joint. It can also ensure the stability of the overall structure.

Claims (5)

1. The composite steel pipe concrete outer ring plate beam-column connection node is composed of composite steel pipe concrete columns, steel beams and force transmission components. The composite steel pipe concrete columns include outer steel pipes (1), inner steel pipes (2) and internal pouring Concrete (3), the steel beam (4) includes upper and lower flanges and webs, and the force transmission member is composed of an outer ring plate (5) and an anchor web (6); it is characterized in that: the node joint An outer ring plate (5) is welded on the wall of the outer steel pipe, which is welded to the upper and lower flanges of the steel beam (4); at the same time, a vertical anchor web (6) is welded between the inner and outer steel pipes and buried in the concrete (3). The steel pipe is slotted, the anchoring web protrudes from the outer steel pipe part, and is welded with the outer ring plate (5) up and down, and is connected with the web of the steel beam (4) by high-strength bolts (8) laterally through the vertical connecting plate (7). 2. The composite steel pipe concrete outer ring slab beam-column connection node according to claim 1, characterized in that: the composite steel pipe concrete column is in the form of inner circle and outer square or inner square and outer square or inner rectangle and outer rectangle cross section. 3. The composite steel pipe concrete outer ring slab beam-to-column connection node according to claim 1, characterized in that: said steel beam is an I-shaped steel beam or a box-shaped steel beam. 4. The composite steel pipe concrete outer ring slab beam-to-column connection node according to claim 1, characterized in that: said concrete is ordinary concrete or high-strength concrete or self-compacting concrete. 5. The composite steel pipe concrete outer ring slab beam-to-column connection node according to claim 1, characterized in that: said outer ring slab is an octagonal ring slab whose hypotenuse is a straight line or an arc.