Steel plate core concrete well lid

Abstract

The utility model provides a steel plate core concrete well lid. The steel plate core concrete well lid comprises concrete on the outer layer of the well lid and an internally reinforced steel plate core. The steel plate core is composed of a steel plate, T-shaped steel and rib plates. The three pieces of T-shaped steel are fixedly arranged in the middle of the upper plate face of the steel plate, are parallel to one another and are spaced by a certain distance, and the middle piece of T-shaped steel is arranged on the diameter of the upper plate face of the steel plate and is slightly longer than the T-shaped steel on the two sides. And the steel rib plates are fixedly arranged on the upper plate surface of the steel plate, are arranged in three rows among the T-shaped steels and are vertical to webs of the T-shaped steels. The T-shaped steel and the rib plate reinforcing structure which are perpendicular to each other are additionally arranged on the steel plate core material of the well lid, so that the bearing capacity and the bending resistance of the well lid can be greatly improved; the T-shaped steel wing plates can improve the connection firmness of the concrete and the steel plate core, and the durability and the service life of the well lid can be remarkably prolonged. The well lid has the advantages of being firm, durable and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to a manhole cover, in particular to a concrete manhole cover reinforced with a steel plate core. Background Art

[0002] Manhole covers serve as entrances, exits, and inspection points for underground utilities such as communications, heat, electricity, water supply and drainage, and gas. They are crucial ancillary facilities that must be able to withstand heavy vehicle loads and ensure the safe operation, inspection, and maintenance of underground facilities and pipelines. Cast iron manhole covers have a high load-bearing capacity but are relatively expensive. Concrete manhole covers are less expensive, but have a lower load-bearing capacity, especially poor bending resistance, making them susceptible to damage. While some concrete manhole covers incorporate reinforcing core materials such as rebar and steel plates, the strength and reliability of the connection between the concrete and the steel plate core are overlooked. Summary of the Invention

[0003] In view of the above problems, the utility model provides a steel core concrete manhole cover, comprising a concrete outer layer of the manhole cover and an internal reinforced steel core; the steel core is composed of steel plates, T-shaped steels and ribs.

[0004] Three T-shaped steels are fixedly arranged in the middle of the upper surface of the steel plate, the web of the T-shaped steel is fixedly connected to the steel plate, and the flange of the T-shaped steel is parallel to the surface of the steel plate; the three T-shaped steels are parallel to each other and spaced a certain distance apart, and the middle T-shaped steel is arranged on the diameter of the upper surface of the steel plate and is slightly longer than the T-shaped steels on both sides.

[0005] The ribs are made of steel and are fixed on the upper surface of the steel plate. The ribs are arranged in three rows between the T-steels and are perpendicular to the webs of the T-steels. The ribs in the middle row are set on the diameter of the upper surface of the steel plate; the height of the ribs does not exceed the height of the webs of the T-steels.

[0006] T-shaped steel and ribs can be welded to the steel plate or cast integrally with the steel plate.

[0007] T-shaped steel and rib reinforcement structures can be fixedly installed on the upper and lower surfaces of the steel plate to further enhance the bending strength of the manhole cover and improve the bearing capacity and durability of the manhole cover.

[0008] The beneficial effects of this utility model are as follows: By adding mutually perpendicular T-shaped steel and rib reinforcement structures to the steel core of the manhole cover, the load-bearing capacity and bending resistance of the manhole cover can be greatly improved. The wings of the T-shaped steel can strengthen the connection between the concrete and the steel core, significantly extending the durability and service life of the manhole cover. The manhole cover of this utility model is strong and durable, and has low manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural diagram of the steel plate core of the utility model.

[0010] Figure 2 It is a structural schematic diagram of the manhole cover of the present utility model.

[0011] Figure 3 This is a structural schematic diagram of another reinforcement structure of the manhole cover of the present invention.

[0012] In the figure: 1 concrete; 2 steel plate; 3 T-steel; 4 rib plate. DETAILED DESCRIPTION

[0013] like Figure 1 、 2 As shown, the utility model provides a steel core concrete manhole cover, comprising a concrete outer layer 1 of the manhole cover and an internal reinforced steel core; the steel core is composed of a steel plate 2, a T-shaped steel 3 and a rib 4.

[0014] Three T-shaped steels 3 are fixedly arranged in the middle of the upper surface of the steel plate 2, the web of the T-shaped steel 3 is fixedly connected to the steel plate 2, and the flange of the T-shaped steel 3 is parallel to the surface of the steel plate 2; the three T-shaped steels 3 are parallel to each other and spaced a certain distance apart, and the middle T-shaped steel 3 is arranged on the diameter of the upper surface of the steel plate 2 and is slightly longer than the T-shaped steels 3 on both sides.

[0015] The ribs 4 are made of steel and are fixedly arranged on the upper surface of the steel plate 2. The ribs 4 are arranged in three rows between the T-shaped steels 3 and are perpendicular to the webs of the T-shaped steels 3. The ribs 4 in the middle row are arranged on the diameter of the upper surface of the steel plate 2; the height of the ribs 4 does not exceed the height of the webs of the T-shaped steels 3.

[0016] The T-shaped steel 3 and the ribs 4 can be welded to the steel plate 2 or integrally cast with the steel plate 2 .

[0017] The utility model adds mutually perpendicular T-shaped steels 3 and ribs 4 to the steel plate 2 core material of the manhole cover to strengthen the structure, which can greatly improve the bearing capacity and bending resistance of the manhole cover; the wing plates of the T-shaped steel 3 can improve the connection firmness between the concrete 1 and the steel plate core, and can significantly extend the service life of the manhole cover.

[0018] Figure 3 This is another reinforcement structure of the manhole cover of the present invention. T-shaped steel 3 and rib 4 reinforcement structures are fixedly arranged on the upper and lower surfaces of the steel plate 2 to further enhance the bending strength of the manhole cover and improve the bearing capacity and durability of the manhole cover.

[0019] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A steel core concrete manhole cover, characterized by: It comprises a concrete outer layer (1) of a manhole cover and an internally reinforced steel plate core; the steel plate core is composed of a steel plate (2), a T-shaped steel (3) and a rib plate (4); The three T-shaped steels (3) are fixedly arranged in the middle of the upper plate surface of the steel plate (2), the web of the T-shaped steel (3) is fixedly connected to the steel plate (2), and the wing of the T-shaped steel (3) is parallel to the plate surface of the steel plate (2); the three T-shaped steels (3) are parallel to each other and spaced a certain distance apart, and the middle T-shaped steel (3) is arranged on the diameter of the upper plate surface of the steel plate (2) and is slightly longer than the T-shaped steels (3) on both sides; The ribs (4) are made of steel and are fixedly arranged on the upper plate surface of the steel plate (2). The ribs (4) are arranged in three rows between the T-shaped steels (3) and are perpendicular to the webs of the T-shaped steels (3). The ribs (4) in the middle row are arranged on the diameter of the upper plate surface of the steel plate (2); the height of the ribs (4) does not exceed the height of the webs of the T-shaped steels (3).

2. The steel core concrete manhole cover according to claim 1, characterized in that: The T-shaped steel (3) and rib plate (4) reinforcement structures are fixedly arranged on both the upper plate surface and the lower plate surface of the steel plate (2).

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