Mortise and tenon structure I-shaped steel frame joint
By splicing the special-shaped steel plates with mortise and tenon structure at the I-shaped steel frame joints and fixing them with bolts, the problem of insufficient bonding at the joints is solved, which significantly improves the circumferential bearing capacity and construction quality, and ensures the safety of tunnel projects.
Patent Information
- Application Number
- CN202421622365.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-10
AI Technical Summary
In tunnel projects, the adhesion and strength of the connection bolts at the I-shaped steel frame joints are difficult to ensure, resulting in insufficient strength at the joints and inability to effectively carry the surrounding rock pressure, affecting the safety of the project.
The I-shaped steel frame joint is adopted to form a joint structure with stronger ring bearing capacity through the tenon and grooves of the special-shaped steel plate A and the special-shaped steel plate B, and is fixed by bolts.
This structure provides a stronger circumferential bearing capacity through the engagement between the tenon and the tongue and groove. Compared with traditional joints, it significantly improves the construction quality of the steel frame joints and the circumferential bearing capacity of the structure, ensuring the safety of the project.
Smart Images
Figure CN222863429U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of I-beam steel frame installation, in particular to an I-beam steel frame joint with a mortise and tenon structure. Background Art
[0002] The primary support steel arch frame is the main bearing structure of the primary support. During construction, the corresponding steel frame units are first made outside the hole according to the predetermined size and shape. Flat joint steel plates are welded on both sides of the units, and the joint steel plates are connected with bolts in the hole. The friction between the joint steel plates and the bolts are used to connect the steel frame units to form a complete ring of I-beam steel frames, forming an effective bearing structure.
[0003] However, in the actual construction process, due to the influence of the construction environment and the limitations of the construction technology, the tightness of the joint steel plates and the strength of the connecting bolts are difficult to guarantee. The strength at the unit joints is obviously insufficient compared to the middle of the unit. When the surrounding rock pressure is large and the unit I-beam is far from reaching its bearing limit, the damage at the joints causes the bearing capacity of the steel arch frame to fail, seriously affecting the safety of the tunnel project. Utility Model Content
[0004] In order to solve the above problems, the present invention provides a new type of I-beam steel frame joint with mortise and tenon structure.
[0005] The technical solution adopted by the utility model is:
[0006] A mortise and tenon structure I-beam frame joint, comprising a special-shaped steel plate A and a special-shaped steel plate B, wherein the special-shaped steel plate A and the special-shaped steel plate B are respectively fixedly installed at the end positions of two I-beams; the special-shaped steel plate A is formed with edges protruding outward on the upper and lower sides, and the edges constitute the tenon in the mortise and tenon structure; the special-shaped steel plate A is formed with grooves on the upper and lower sides, and the grooves constitute the tenon groove in the mortise and tenon structure; the special-shaped steel plate A and the special-shaped steel plate B are provided with bolt holes at the same position, and the special-shaped steel plate A and the special-shaped steel plate B are spliced with the mortise and tenon structure and fixed by a plurality of bolts, so that the two I-beams are connected.
[0007] Furthermore, the special-shaped steel plate A and the special-shaped steel plate B are both rectangular steel plates and have the same length.
[0008] Furthermore, the special-shaped steel plate A and the special-shaped steel plate B are respectively welded and fixed to the end positions of the two I-beams.
[0009] Furthermore, the number of the bolt holes is 4, and the bolt holes are symmetrically arranged on the left and right sides of the special-shaped steel plate A and the special-shaped steel plate B.
[0010] Furthermore, the axial direction of the tongue and groove is parallel to the axial direction of the tunnel.
[0011] Furthermore, after the special-shaped steel plate A and the special-shaped steel plate B are spliced together according to the mortise and tenon structure, the outer end surface of the special-shaped steel plate A and the outer end surface of the special-shaped steel plate B are tightly fitted.
[0012] The beneficial effects of the utility model are:
[0013] The mortise and tenon structure I-beam steel frame joint uses a special-shaped joint steel plate that can be tightly engaged in the form of a mortise and tenon to replace the flat joint steel plate in the traditional joint that is tightly fitted by bolts, thereby solving the problem of insufficient tightness of the joint steel plate during construction. The circumferential bearing capacity of the mortise and tenon structure I-beam steel frame joint is mainly provided by the tenons and tenons that engage with each other. Compared with the traditional joints that provide circumferential bearing capacity by the friction force of bolts and joint plates, its circumferential bearing capacity is greatly enhanced; secondly, the connection bolt load can ensure the stability of the mortise and tenon structure and bear the axial load of the tunnel. The mortise and tenon structure I-beam steel frame joint can improve the construction quality of the steel frame joint, greatly improve the circumferential bearing capacity of the structure, and ensure the safety of the project. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A structural schematic diagram of a steel frame joint connected by a mortise and tenon structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the installation of the steel frame joint connected by the mortise and tenon structure of the utility model;
[0016] Figure 3 It is a schematic diagram of the steel frame joint connected by the mortise and tenon structure of the utility model after installation;
[0017] Figure 1 —3, 1—special-shaped steel plate A, 2—special-shaped steel plate B, 3—I-beam, 4—edge, 5—groove, 6—bolt hole, 7—bolt. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings of the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in a figure to another element or feature. It should be understood that, in addition to the orientation shown in the processing figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, elements described as being "below" other elements or features will be defined as being "above" the other elements or features. Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be positioned in other ways, and the spatially relative descriptions used herein can be interpreted accordingly.
[0020] This embodiment provides a mortise and tenon structure I-beam steel frame joint, such as Figure 1 As shown, the mortise and tenon structure I-beam steel frame joint includes a special-shaped steel plate A1 and a special-shaped steel plate B2; the special-shaped steel plate A1 and the special-shaped steel plate B2 are both rectangular steel plates with the same length dimension a. Of course, under certain special conditions, the special-shaped steel plate A1 and the special-shaped steel plate B2 can also be made of other shapes, such as trapezoidal steel plates. Figure 1 As shown, the upper and lower sides of the special-shaped steel plate A1 are formed with outwardly protruding edges 4, and the edges 4 constitute the tenons in the mortise and tenon structure; the upper and lower sides of the special-shaped steel plate A1 are formed with grooves 5, and the grooves 5 constitute the tenons in the mortise and tenon structure. The special-shaped steel plate A1 and the special-shaped steel plate B2 are provided with bolt holes 6 at the same position, and the number of bolt holes 6 is provided according to the actual axial load requirements of the project. In this embodiment, the number of bolt holes 6 is 4, and the bolt holes 6 are symmetrically arranged on the left and right sides of the special-shaped steel plate A1 and the special-shaped steel plate B2; if the axial load needs to be increased, 4 or 8 bolt holes 6 can also be symmetrically arranged on the left and right sides of the special-shaped steel plate A1 and the special-shaped steel plate B2.
[0021] like Figure 2 As shown, the special-shaped steel plates A1 and B2 of the mortise and tenon structure I-beam steel frame joint are processed and formed in a factory according to a predetermined shape and size and then transported to the tunnel construction site; the special-shaped steel plates A1 and B2 are welded and fixed to the ends of the two I-beams 3 outside the tunnel. Figure 2 and Figure 3 As shown, after the special-shaped steel plate A1 and the special-shaped steel plate B2 are spliced together according to the mortise and tenon structure, four bolts 7 are used to pass through the bolt holes 6 of the special-shaped steel plate A1 and the special-shaped steel plate B2 to fix them, so that the two I-beams 3 are connected; during the connection process, it is necessary to ensure that the axial direction of the tenon groove of the special-shaped steel plate B2 is parallel to the axial direction of the tunnel; and then other I-beams 3 are connected in turn in this way, and finally a steel frame unit of the primary supporting steel arch frame is formed.
[0022] like Figure 3As shown, after the special-shaped steel plate A1 and the special-shaped steel plate B2 are spliced according to the mortise and tenon structure, the outer end face of the special-shaped steel plate A1 fits tightly with the outer end face of the special-shaped steel plate B2, and the circumferential bearing capacity is mainly provided by the tenons and tenons that bite into each other. Compared with the traditional joints in which the circumferential bearing capacity is provided by the friction force of the bolts and the joint plates, the circumferential bearing capacity is greatly enhanced; the bolts 7 connecting the special-shaped steel plates A1 and B2 can ensure the stability of the mortise and tenon structure and bear the axial load of the tunnel, thereby improving the construction quality of the steel frame joint, greatly improving the circumferential bearing capacity of the structure, and ensuring the safety of the project.
[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An I-beam steel frame joint with a mortise and tenon structure, characterized in that: The I-beam frame joint of the mortise and tenon structure comprises a special-shaped steel plate A and a special-shaped steel plate B, which are respectively fixedly installed at the end positions of two I-beams; the special-shaped steel plate A is formed with edges protruding outward on the upper and lower sides, and the edges constitute the tenon in the mortise and tenon structure; the special-shaped steel plate A is formed with grooves on the upper and lower sides, and the grooves constitute the tenon groove in the mortise and tenon structure; the special-shaped steel plate A and the special-shaped steel plate B are provided with bolt holes at the same position, and the special-shaped steel plate A and the special-shaped steel plate B are spliced with the mortise and tenon structure and fixed by a plurality of bolts, so that the two I-beams are connected.
2. The mortise and tenon structure I-beam steel frame joint according to claim 1, characterized in that: The special-shaped steel plate A and the special-shaped steel plate B are both rectangular steel plates with the same length.
3. The mortise and tenon structure I-beam steel frame joint according to claim 1, characterized in that: The special-shaped steel plate A and the special-shaped steel plate B are respectively welded and fixed to the end positions of two I-beams.
4. The mortise and tenon structure I-beam steel frame joint according to claim 1, characterized in that: The number of the bolt holes is 4, and the bolt holes are symmetrically arranged on the left and right sides of the special-shaped steel plate A and the special-shaped steel plate B.
5. The mortise and tenon structure I-beam steel frame joint according to claim 1, characterized in that: The axial direction of the tongue and groove is parallel to the axial direction of the tunnel.
6. The mortise and tenon structure I-beam steel frame joint according to claim 1, characterized in that: After the special-shaped steel plate A and the special-shaped steel plate B are spliced together according to the mortise and tenon structure, the outer end surface of the special-shaped steel plate A and the outer end surface of the special-shaped steel plate B are tightly fitted.