Dam toe transition structure suitable for arch dam on complex rock stratum

A technology for transitional structures and arch dams, applied in arch dams, infrastructure engineering, dams, etc., to achieve the effects of improving foundation stress, shortening construction period, and facilitating construction

Pending Publication Date: 2019-10-18
POWERCHINA HUADONG ENG COPORATION LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the above-mentioned problems of complex rock foundations of arch dams in the prior art, and provides a dam toe transition structure suitable for arch dams on complex rock formations

Method used

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  • Dam toe transition structure suitable for arch dam on complex rock stratum
  • Dam toe transition structure suitable for arch dam on complex rock stratum
  • Dam toe transition structure suitable for arch dam on complex rock stratum

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a kind of dam toe transition structure of the present invention is suitable for arch dams on the complex rock formation 2, and the dam toe transition structure is arranged on the complex rock formation 2 in the area between the downstream dam surface 101 of the arch dam 1 and the apron 5 The bedrock surface includes a multi-center foundation 3 and a dam toe transition block 4, the multi-center foundation 3 is arranged along the downstream dam surface 101 of the arch dam 1, and the dam toe transition block 4 is arranged on the multi-center foundation 3 and the dam toe Between; the multi-center foundation 3 includes an inclined portion 301 and a horizontal portion 302, the surface of the inclined portion 301 is smoothly and closely connected with the downstream surface of the...

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Abstract

The invention provides a dam toe transition structure suitable for an arch dam on a complex rock stratum. The dam toe transition structure is arranged between the dam toe and an apron at the downstream of the arch dam and includes a multi-circular center foundation and dam toe transition blocks. The multi-circular center foundation is arranged along the downstream dam toe of the arch dam. The damtoe transition blocks are arranged between the multi-circular center foundation and the downstream apron. The multi-circular center foundation includes an inclined part and a horizontal part. The surface of the inclined part is smoothly and closely connected to a downstream face of the arch dam. The surface of the inclined part is provided with a multi-circle center arc combination structure. Themulti-circle center foundation can be smoothly and closely combined with the arch dam, which can fully spread thrust of the arch dam to bedrock of a dam foundation and improve the stress distributionof the arch dam foundation. The dam toe transition blocks can reduce a stress gradient between the arch dam and the downstream apron, homogenize stress transfer in the bedrock and coordinate deformation between the arch dam and the downstream apron.

Description

technical field [0001] The patent of the present invention relates to the technical field of water conservancy engineering, in particular to a multi-centered foundation for arch dams on complex rock formations and a dam toe transition structure between them and downstream aprons. Background technique [0002] With the vigorous development of global clean energy, hydropower projects continue to advance. As the most economical dam type, arch dams are suitable for construction in alpine and valley areas. Due to the complex geological conditions in the dam site area, it is often necessary to use columnar joint basalt, breccia lava, Weak rock formations such as sandstone and slate. In order to improve the anti-deformation ability of complex rock foundations, a lot of foundation treatment work is required, which has a great impact on project investment and construction period. At the same time, the stress difference between the arch dam and the downstream apron foundation is rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/12E02B8/00E02D27/40E02B9/00
CPCE02B7/12E02B8/00E02B9/00E02D27/40Y02E10/20
Inventor 徐建荣顾锦健张伟狄何明杰王建新郭传科彭育陶俊佳蒋明张石
Owner POWERCHINA HUADONG ENG COPORATION LTD
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