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Combined multi-arch type steel-structure dam

A technology for steel structure dams and multiple arches, applied in arch dams, dams, water conservancy projects, etc., can solve the problems of large investment, long construction period, and poor adaptability.

Inactive Publication Date: 2011-07-06
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of gravity dams and earth-rock dams with large cross-sectional dimensions, insufficient material strength, long construction period, and large investment; to make up for the lack of adaptability of arch dams to foundations, a new dam type was invented—— Composite multi-arch steel dam

Method used

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  • Combined multi-arch type steel-structure dam
  • Combined multi-arch type steel-structure dam
  • Combined multi-arch type steel-structure dam

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Embodiment one: see figure 1 , Picture 1-1 , Figure 1-2 , Figure 3-Figure 10 , a composite multi-arch steel dam, comprising a dam bottom reinforced concrete cap 11 and pre-embedded fixings, side piers 12 made of reinforced concrete structures on both sides of the dam and pre-embedded fixings. The shapes of the reinforced concrete cap 11 at the bottom of the dam and the reinforced concrete side piers 12 on both banks mainly depend on the shape of the main body of the steel structure dam. From image 3 It can be seen that the width of the reinforced concrete cap 11 at the bottom of the dam and the reinforced concrete side piers 12 on both banks are appropriately greater than the width of the bottom or side of the main body of the steel structure dam.

[0053] When constructing a steel dam, firstly, standardize the design of the dam bottom cap and side piers according to the overall actual shape of the steel dam main design, the width of the dam bottom, the height o...

Embodiment 2

[0068] Embodiment 2: The accompanying drawings are not drawn, and the content is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is: in this embodiment, the small arched unit body A of the box-shaped rectangular section and the small box-shaped triangular section The fixed relationship between the adjacent sides of the arched unit body B is fixed by bolts. For example, matching fixing holes are respectively provided on the adjacent double-layer public side walls, and high-strength bolts, nuts, and pads are used in the corresponding fixing holes. The film is fixed, not detailed.

Embodiment 3

[0069] Embodiment three: see Figure 11 , Figure 11-1 , Figure 11-2 , Figure 11-2-1 , another combined arch steel dam, the main content is the same as that of Embodiment 1, and the similarities will not be repeated. The difference is: each box-type rectangular cross-section small arch unit A The side adjacent to the box-type triangular section small arched unit body B is a common adjacent side of a single layer.

[0070] In this embodiment, each box-shaped rectangular cross-section small arch unit body A and box-shaped triangular cross-section small arch unit body B constituting the box-shaped arch support body are respectively fixed on site by welding or fixed by other means. see respectively Figure 11 , Figure 11-1 , Figure 11-2 , Figure 11-2-1 The small arched unit body A of the box-type rectangular cross-section is formed by welding and fixing the arc-shaped side plates 8, the plane end plates 9 with arc-shaped edges, and the oblique connecting rods 6 on site...

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Abstract

The invention relates to a combined multi-arch type steel-structure dam, which comprises a reinforced concrete cushion cap and a pre-embedded fixed part at the dam bottom and reinforced concrete structured side piers and the pre-embedded fixed part on the two banks, wherein the steel-structural dam main body comprises a box type arch-shaped supporting main body and n small-span arch-shaped supporting panels which are fixed on a convex water-ward face of the arch-shaped supporting main body; and the arch-shaped supporting main body is an assembly which divided into n small arch-shaped supportswhich are formed by fixing box type small arch-shaped units A with rectangular sections and box type small arc-shaped units B with triangular sections. The combined multi-arch type steel-structure dam has the advantages that: the steel-structure dam is mainly stabilized under the counter-force action of the arch ends on the two banks, a plurality of small-span arch rings which are continuously arranged on the water-ward face ensure that the load on the dam body is uniformly transmitted to the arch-shaped supporting main body which is arranged behind the panel and has a box girder structure and then transmitted to the two banks and the foundation, so the load distribution is more rational; the dam body is light and tough, highly elastic and high in shock resistance; and the materials for building the dam are green and environmentally-friendly and can be recycled, the industrial manufacturing and installation are easily realized and the project process can be accelerated.

Description

1. Technical field: [0001] The invention relates to a dam structure improvement technology for water conservancy and hydropower projects, in particular to a composite multi-arch steel dam. 2. Background technology: [0002] At present, the main water retaining structures in water conservancy and hydropower projects include gravity dams, earth-rock dams and arch dams. The main characteristics of various dam types are as follows: [0003] The working principle of the gravity dam is to rely on the anti-sliding force generated by the dam body's own weight to meet the stability requirements of the dam body, and rely on the compressive stress generated by the dam body's own weight to offset the tensile stress caused by the water pressure. The gravity dam has a large dam body section size, a large amount of material, and low dam body stress, so the material strength cannot be fully exerted. Moreover, the large contact area between the dam body and the foundation results in high u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/12E02B8/00
Inventor 魏群张国新刘尚蔚魏鲁双杨小荟尹伟波
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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