阅读说明：本技术 基于榫卯型连接件的钢—混凝土组合结构 (Steel-concrete composite structure based on tenon fourth of twelve earthly branches type connecting piece ) 是由 彭旺虎 赵志军 谢泽华 柳彪 欧阳铭 杨霖颖 林婉双 于 2021-08-06 设计创作，主要内容包括：本发明公开了基于榫卯型连接件的钢—混凝土组合结构,包括混凝土件和钢构件,钢构件包括钢构件下翼缘、钢构件腹板和钢榫头,混凝土件呈水平板状,钢构件腹板垂直设置在钢构件下翼缘上表面的中部,钢榫头均匀间隔分布在钢构件腹板的上端部,相邻钢榫头之间形成卯口,在卯口中部设置有贯通钢筋,贯通钢筋相对钢构件腹板的法向呈平行状态,钢构件腹板的上端部和钢榫头均位于混凝土件的下表面内部。本发明在应用的过程中具有较高的疲劳性能,连接件不需要额外的焊接作业和焊接工具,能够承担钢构件和混凝土件间的纵向剪力及横向剪力,同时抵抗混凝土件与钢构件间的掀起作用。(The invention discloses a steel-concrete combined structure based on a mortise-tenon type connecting piece, which comprises a concrete member and a steel member, wherein the steel member comprises a steel member lower flange, a steel member web plate and steel tenons, the concrete member is in a horizontal plate shape, the steel member web plate is vertically arranged in the middle of the upper surface of the steel member lower flange, the steel tenons are uniformly distributed at the upper end part of the steel member web plate at intervals, mortise openings are formed between adjacent steel tenons, through steel bars are arranged in the middle of the mortise openings, the through steel bars are parallel to the normal direction of the steel member web plate, and the upper end part of the steel member web plate and the steel tenons are both positioned in the lower surface of the concrete member. The invention has higher fatigue performance in the application process, the connecting piece does not need extra welding operation and welding tools, can bear the longitudinal shearing force and the transverse shearing force between the steel member and the concrete member, and simultaneously resists the lifting effect between the concrete member and the steel member.)

1. Steel-concrete integrated configuration based on tenon fourth of twelve earthly branches type connecting piece, a serial communication port, including concrete component (1) and steel component, the steel component includes steel component bottom flange (2), steel component web (3) and steel tenon (4), concrete component (1) is the horizontal plate form, steel component web (3) set up the middle part at steel component bottom flange (2) upper surface perpendicularly, steel tenon (4) even interval distribution is at the upper end of steel component web (3), and is adjacent middle part between steel tenon (4) is provided with link up reinforcing bar (5), the normal direction of link up reinforcing bar (5) relative steel component web (3) is parallel state, the upper end of steel component web (3) and steel tenon (4) all are located inside the lower surface of concrete component (1).

2. The steel-concrete composite structure based on the mortise-tenon type connecting pieces is characterized in that the upper surface of the concrete piece (1) is horizontal, the middle part of the lower surface of the concrete piece (1) is downward convex to form a bearing, the steel piece is placed at the bearing of the lower surface of the concrete piece (1), the upper end part and the steel rabbet (4) of the web plate (3) of the steel piece are both positioned inside the convex shape of the concrete piece (1), the through reinforcement (5) is parallel to the convex outer contour edge of the concrete piece (1), and two ends of the through reinforcement (5) extend to the inside of a horizontal plate body in the concrete piece (1).

3. The steel-concrete composite structure based on the tenon-and-mortise type connecting pieces according to claim 1, wherein the cross section of the concrete piece (1) is T-shaped or U-shaped, the steel piece becomes an external reinforcement of the concrete piece (1), the steel piece web (3) and the steel tenon (4) are both positioned inside the concrete piece (1), and the steel piece lower flange (2) is in contact with the surface of the concrete piece (1).

4. The steel-concrete composite structure based on the mortise-tenon type connecting pieces is characterized in that the steel member lower flange (2), the steel member web (3) and the steel tenon (4) are of an integral structure.

5. The steel-concrete composite structure based on tenon-and-mortise type connecting pieces of claim 1, characterized in that the profile of the steel tenon (4) comprises a zigzag-shaped tenon, a conical curved tenon and a gentle curved tenon.

Technical Field

The invention relates to the technical field of building and bridge engineering, in particular to a steel-concrete combined structure based on mortise and tenon type connecting pieces.

Background

In the field of civil engineering, the most common composite structure is a steel and concrete composite structure. Steel and concrete are main materials for building civil engineering structures such as bridges, houses and the like, and the two materials have respective advantages and disadvantages in physical and mechanical properties. Through some mode with steel and concrete combination work jointly together, then can synthesize the advantage of traditional concrete structure and steel construction to accomplish to make good use of advantage and avoid the weak point.

In a composite structure, the connectors are key elements that ensure the joint working of the steel and concrete members. The welding nail is a shear connector which is most widely applied at present and has better comprehensive stress performance and construction performance, has the advantages of isotropy, good lifting resistance, quick and convenient construction and the like, and the other commonly applied connector is a perforated plate connector (PBL connector).

With the weld stud as the attachment, the upper flange of the steel member is essential to provide a flat surface for the arrangement of the weld stud. Meanwhile, special welding equipment is needed for the construction of the cylindrical head welding nail. And need wear the muscle in the closed round hole among the PBL connecting piece to guarantee the closely knit degree of downthehole concrete when requiring the pouring concrete, have great construction degree of difficulty. When the PBL connecting piece is used for a composite beam, the concrete slab can be transversely divided, the integrity of the concrete slab is damaged to a certain extent, and the transverse stress of the concrete slab is not facilitated, so that a steel-concrete composite structure based on the tenon-and-mortise type connecting piece is provided for solving the problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a steel-concrete combined structure based on a mortise-tenon type connecting piece.

In order to achieve the purpose, the invention adopts the following technical scheme:

steel-concrete integrated configuration based on tenon fourth of twelve earthly branches type connecting piece, including concrete member and steel member, the steel member includes steel member bottom flange, steel member web and steel tenon, concrete member is the horizontal plate form, the steel member web sets up the middle part at steel member bottom flange upper surface perpendicularly, steel tenon evenly spaced apart distribution is adjacent in the upper end of steel member web middle part between the steel tenon is provided with the link up reinforcing bar, the normal direction of link up the relative steel member web of reinforcing bar is parallel state, the upper end of steel member web and steel tenon all are located inside the lower surface of concrete member.

Preferably, the upper surface of concrete piece is the level form and the lower surface middle part is downward protruding form formation bearing, the bearing department of concrete piece lower surface is arranged in to the steel member, just the upper end and the tenon of steel member web all are located the protruding form inside of concrete piece, it is parallel mutually with the protruding form outline limit of concrete piece to link up the reinforcing bar, just the both ends of link up the reinforcing bar extend to the inside that is the plate body of level form in the concrete piece.

Preferably, the cross-section of concrete spare is T shape or U-shaped, the steel member becomes the outside arrangement of reinforcement of concrete spare, steel member web and steel tenon all are located the roof beam body inside of concrete spare, just the steel member bottom flange contacts with the surface of concrete spare.

Preferably, the steel member lower flange, the steel member web and the steel tenon in the steel member are of an integrated structure.

Preferably, the shape of the steel tenon comprises a fold line-like tenon, a conical curve-shaped tenon and a gentle curve-shaped tenon.

The steel-concrete combined structure based on the mortise-tenon type connecting piece has the beneficial effects that:

1. compared with the mode of adopting the welding nail connection and the PBL connecting piece, the steel member is in an integrated connection mode, so that an additional connection procedure is not needed among the lower flange of the steel member, the web plate of the steel member and the steel tenon;

2. the steel member adopts a T-shaped cross section, the upper edge of a web plate of the steel member and the connecting piece are directly inserted into the concrete member, the steel member can be directly cut according to the shape of the steel tenon through the web plate of the I-shaped steel beam, the line shape of the tenon on one side is matched with the line shape of the mortise on the other side, and therefore two steel members can be formed by one I-shaped steel beam without loss or with extremely low loss; the manufacturing cost of the steel member is saved;

3. under the action of stress, a steel tenon formed at the convex part of a steel member web and concrete form a concrete mortise tightly buckled at the concave part, so that a force transmission mechanism between the steel member and the concrete member is established;

4. the stress mechanism of the horizontal shearing force transmitted between the steel member and the concrete member ensures that the steel member has excellent shear bearing capacity, ductility and fatigue resistance relative to the concrete member, meanwhile, the width of the head part of the steel tenon is larger than that of the root part, and necessary uplift resistance can be provided under the matching of the concrete mortise, in addition, the mortise formed between the adjacent steel tenons is in an opening form, and overlarge transverse division can not be generated on the concrete member, so that the transverse integrity of the concrete member is ensured.

5. The steel member is made into the external reinforcing bars of the corresponding concrete member by utilizing the tenon-and-mortise connection combination effect between the steel member and the concrete member, so that the effective height of the section of the corresponding concrete member is increased, and the strength and the rigidity of the concrete member are improved.

Drawings

FIG. 1 is a schematic structural diagram of a steel-concrete combined structure based on a mortise-tenon type connecting piece provided by the invention;

FIG. 2 is a schematic structural diagram of a steel member of a steel-concrete combined structure based on mortise and tenon type connecting pieces, which is provided by the invention;

FIG. 3 is a cross-sectional view of a steel-concrete composite structure based on mortise and tenon type connecting pieces, which is provided by the invention;

FIG. 4 is a cross-sectional view of a second embodiment of a steel-concrete composite structure based on mortise and tenon type connecting pieces according to the present invention;

FIG. 5 is a first cross-sectional view of a third embodiment of a steel-concrete composite structure based on mortise and tenon type connecting pieces according to the present invention;

fig. 6 is a second cross-sectional view of a third embodiment of a steel-concrete composite structure based on mortise-tenon type connecting pieces according to the present invention;

fig. 7 is a schematic structural diagram of a steel tenon of a steel-concrete composite structure based on a mortise-tenon type connecting piece.

In the figure: 1. a concrete member; 2. a steel member lower flange; 3. a steel member web; 4. a steel tenon; 5. penetrating through the reinforcing steel bars.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1, 2, 3 and 7, the steel-concrete composite structure based on the mortise and tenon type connecting piece comprises a concrete member 1 and a steel member, the steel member comprises a steel member bottom flange 2, steel member web 3 and steel tenon 4, concrete member 1 is the horizontal plate form, 3 perpendicular middle parts that set up at 2 upper surfaces on the steel member bottom flange of steel member web, 4 even interval distribution of steel tenon are at the upper end of steel member web 3, middle part between the adjacent steel tenon 4 is provided with link up reinforcing bar 5, the normal direction that 5 relative steel member webs of link up reinforcing bar 3 is parallel state, the upper end of steel member web 3 and steel tenon 4 all are located inside the lower surface of concrete member 1, steel member bottom flange 2 in the steel member, formula structure as an organic whole between steel member web 3 and the steel tenon 4, the appearance of steel tenon 4 includes type zigzag shape tenon, the gentle and curved tenon of circular cone curved shape.

The method comprises the following steps that I-shaped steel sold in the market is adopted, the I-shaped steel is cut along a cutting line in the middle of an I-shaped steel web plate, and one I-shaped steel becomes two steel members; the rectangular steel plate can also be cut, so that one rectangular steel plate becomes two steel webs 3 with steel tenons 4, and then the lower flanges 2 are respectively welded to form the steel member.

In the process of making concrete member 1, along the intermediate position of steel tenon 4, evenly tile in the mortise promptly and run through reinforcing bar 5, make concrete member 1, steel member and run through reinforcing bar 5 form a whole.

Example 2

Referring to fig. 4, the upper surface of concrete spare 1 is the horizontal form and the lower surface middle part is downward protruding form and forms the bearing, and the bellying of concrete spare 1 lower surface is arranged in to the steel member, and the upper end of steel member web 3 and steel tenon 4 all are located the protruding inside form of concrete spare 1, link up reinforcing bar 5 and concrete spare 1's protruding form outline limit and are parallel mutually, and the both ends that link up reinforcing bar 5 extend to the inside that is the plate body of horizontal form in the concrete spare 1.

Has the advantages that: a mortise formed between the steel tenon 4 and the steel tenon 4 on the upper edge of the steel member web 3 directly extends into the concrete member 1 to form a mortise and tenon structure with a combination effect;

under stress, the steel tenon 4 at the convex part of the steel member web 3 and the concrete member 1 form a concrete mortise tightly buckled at the concave part, so that a force transmission mechanism between the steel member and the concrete member is established, and when necessary, a transverse through steel bar 5 can be arranged at the concave part to increase the shearing resistance;

the stress mechanism of horizontal shear force is transmitted between the steel member and the concrete member 1, so that the steel member has excellent shear bearing capacity, ductility and fatigue resistance relative to the concrete member 1, meanwhile, the width of the head part of the steel tenon 4 is larger than that of the root part, necessary uplift resistance can be provided under the matching of the concrete mortise, in addition, the mortise is in an opening form, overlarge transverse segmentation can not be generated on the concrete member, and the transverse integrity of the concrete member is ensured.

In the traditional steel-concrete combined member, a steel member, a connecting piece and a concrete member are manufactured respectively, because a wing plate of the steel member is used as a necessary plate for installing connecting pieces such as welding nails and the like, the steel member needs to adopt a section with an upper flange; the upper flange of the steel member has smaller load contribution in the combined structure due to the position close to the neutral axis of the combined section; and the concrete integrated configuration based on tenon fourth of twelve earthly branches type connecting piece can save the steel member top flange.

Compared with the mode that adopts weld nail or PBL connecting piece, steel member formula connected mode as an organic whole consequently makes and need not extra connection process between steel member bottom flange 2, steel member web 3, the steel tenon 4.

Example 3

Referring to fig. 5 to 6, the cross section of the concrete member 1 is T-shaped or U-shaped, the steel member becomes the external reinforcement of the concrete member 1, the web 3 and the tenon 4 of the steel member are both located inside the beam body of the concrete member 1, and the bottom flange 2 of the steel member contacts with the surface of the concrete member 1.

Has the advantages that: the steel member becomes the external reinforcement of the corresponding concrete member 1 by utilizing the tenon-and-mortise connection combination effect between the steel member and the concrete member 1, the effective height of the cross section of the corresponding concrete member 1 is increased, and the strength and the rigidity of the concrete member are improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.