Intersection structure composed of regular curved surface and plane top arch

Abstract

The utility model provides an intersection structure composed of a regular curved surface and a plane arch crown. The intersection structure comprises an intersection connecting cavern, an arc chamfer-shaped side wall, the regular curved surface-shaped intersection arch crown and a plane arch crown, the side wall at the junction of the junction connecting cavern is the arc chamfer-shaped side wall; the top arch at the junction of the junction connecting cavern is a regular curved-surface-shaped junction top arch; the utility model has the beneficial effects that the scheme of a spatial complex curved surface is abandoned, the specifications of the prefabricated steel bars are adjusted, so that the prefabricated steel bars are more convenient to manufacture, the original tedious steel bars are eliminated, the construction cost is reduced, the construction efficiency is improved, and the construction cost is reduced. The intersection structure is relatively simple, effective and convenient to implement, turning and passing of equipment such as vehicles in the construction period can be facilitated, and meanwhile the construction difficulty of excavation supporting and lining structural steel bars of the intersection is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cavern intersection, in particular to an intersection structure composed of a regular curved surface and a plane top arch. Background Art

[0002] In water conservancy and hydropower projects, the water transmission and power generation systems have numerous underground caverns arranged in a crisscross pattern. Intersections of these caverns are common, such as the intersection between the tailgate ventilation tunnel and the common upper chamber, the intersection of the E-shaped drainage corridor in the lower flat tunnel, and the intersection of construction branch tunnels. Common intersection types include: Option 1, where the intersections intersect at right angles without chamfering; Option 2, where the intersections intersect at rounded corners with a spatial curved surface transition at the intersection. Option 1 presents challenges such as inconvenient vehicle turning during construction and difficulty maintaining the right angles of the unloading sidewalls during excavation. Option 2 also presents a complex spatial curved surface structure at the chamfered corners, with dense reinforcement at the intersections. Furthermore, the reinforcement is expressed using quadratic functions, making rebar fabrication and installation cumbersome and construction difficult. Summary of the Invention

[0003] In order to solve the problems existing in the background technology, the present invention provides an intersection structure composed of a regular curved surface and a flat top arch.

[0004] The present invention adopts the following technical solution: an intersection structure composed of a regular curved surface and a plane top arch, including an intersection-connecting cavern, an arc-shaped chamfered side wall, a regular curved surface intersection top arch and a plane arch; the intersection side wall of the intersection-connecting cavern is the arc-shaped chamfered side wall; the top arch at the intersection of the intersection-connecting cavern is a regular curved surface intersection top arch; the plane arch is provided between the top arch of the intersection-connecting cavern and the regular curved surface intersection top arch.

[0005] Furthermore, the regular curved surface intersection top arch is a regular curved surface formed by a smooth transition of an arc with the same radius as the intersection-connected cavern top arch.

[0006] Furthermore, the reinforcement in the top arch of the regular curved intersection is in the shape of a plane circular arc.

[0007] Furthermore, the reinforcement in the plane arch is linear.

[0008] The beneficial effect of the present invention is to abandon the scheme of complex spatial curved surfaces, adjust the specifications and types of prefabricated steel bars to make them easier to manufacture, eliminate the original steel bars that are cumbersome to install, and propose a relatively simple, effective and easy-to-implement intersection structure, which can not only facilitate the turning and passage of vehicles and other equipment during the construction period, but also reduce the difficulty of excavation support and lining structure steel bar construction at the intersection. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a schematic diagram of an intersection with right angles;

[0011] Figure 3 It is a schematic diagram of the transition intersection of rounded space surfaces;

[0012] Figure 4 This is a schematic diagram of reinforcement for the transition intersection of rounded space surfaces;

[0013] Figure 5 Produce a schematic diagram of the specifications for the reinforcement of the transition intersection of the rounded space surface;

[0014] Figure 6 This is a schematic diagram of the reinforcement plane of the utility model;

[0015] Figure 7 This is a schematic diagram of the reinforcement cross section of the utility model;

[0016] Figure 8 This is a schematic diagram of the reinforcement production specifications for this utility model.

[0017] In the figure, 1. The first intersection connects the cavern; 2. The second intersection connects the cavern; 3. The top arch of the intersection with a regular curved surface; 4. The flat arch; 5. The side wall with a circular chamfered shape; 6. The wall reinforcement. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-8 The embodiment of the utility model provides a technical solution: an intersection structure composed of a regular curved surface and a plane top arch, including a first intersection connecting chamber 1, a second intersection connecting chamber 2, an arc chamfered side wall 5, a regular curved surface intersection top arch 3 and a plane arch 4; the side wall at the intersection of the first and second intersection connecting chambers is an arc chamfered side wall 5; the top arch at the intersection of the first and second intersection connecting chambers is a regular curved surface intersection top arch 3; the plane arch 4 is provided between the top arches of the first and second intersection connecting chambers and the regular curved surface intersection top arch 3.

[0020] The regular curved surface intersection top arch 3 is a regular curved surface formed by a smooth transition of an arc with the same radius as the first and second intersection connection cavern top arches.

[0021] The reinforcement in the top arch 3 of the regular curved intersection is in the shape of a plane circular arc.

[0022] The reinforcement inside the plane vault 4 is in a straight line shape.

[0023] A construction method for an intersection structure composed of a regular curved surface and a flat top arch:

[0024] Excavate the underground cavern at the intersection and prefabricate Figure 6-8 Among the steel bars d, e, f, g, h, and i shown, d is the main stress-bearing reinforcement of the lining, e and f are distribution reinforcements, which are connected by steel wire tying; g and h are the main stress-bearing reinforcement of the lining, i is the distribution reinforcement, and the reinforcements are connected by steel wire tying to form a reinforcement skeleton; the side wall is cast, and wall reinforcement 6 is embedded in the wall; the wall reinforcement 6 is fixed to one end of the e distribution reinforcement and the d main stress-bearing reinforcement of the lining by steel wire.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An intersection structure composed of a regular curved surface and a flat top arch, characterized in that: It includes a cross-connected cavern, an arc chamfered side wall, a regular curved intersection top arch and a plane arch; the side wall at the intersection of the cross-connected cavern is the arc chamfered side wall; the top arch at the intersection of the cross-connected cavern is a regular curved intersection top arch; the plane arch is provided between the top arch of the cross-connected cavern and the regular curved intersection top arch.

2. The intersection structure composed of a regular curved surface and a flat top arch according to claim 1, characterized in that: The regular curved surface intersection top arch is a regular curved surface formed by a smooth transition of an arc with the same radius as the intersection connection cavern top arch.

3. The intersection structure composed of a regular curved surface and a flat top arch according to claim 1, characterized in that: The reinforcement in the top arch of the regular curved intersection is in the shape of a plane circular arc.

4. The intersection structure composed of a regular curved surface and a flat top arch according to claim 1, characterized in that: The reinforcement in the plane arch is in a straight line shape.

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