双层橡胶坝的大型模型试验研究

IF 2.8 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Geosynthetics International Pub Date : 2022-09-29 DOI:10.1680/jgein.22.00277

X. Gao, W. Guo, W. F. Guo, Y. Ren, L. Dai

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引用次数: 1

摘要

为了提高传统橡胶坝的挡水能力，提出了一种新型橡胶坝，将两层坝体锚固在刚性混凝土基座上。对双层橡胶坝在不同内外水头、锚固距离和横截面周长条件下的静力性能进行了大规模模型试验研究。结果表明，第一层坝的最大拉伸力位于锚固点处，而第二层坝的最大拉伸力位于挤压自由截面处。最优锚固距离为上游坝内水头0.06 L1时，最佳锚固周长比为0.8;最优锚固距离为下游坝内水头0.40 L1和0.36 L1时，最优锚固周长比为上游坝内水头0.40 L1和0.36 L1。

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Large-scale model test studies on the double-layer rubber dam

A new rubber dam with two layers of dam bodies anchored together into a rigid concrete base was proposed to improve the water-retaining capacity of the traditional rubber dam. A series of large-scale model tests are conducted to evaluate the static behavior of the double-layer rubber dam under conditions of different internal and external water heads, anchorage distances, and cross-sectional perimeters. It is found that the maximum tensile force of the Layer-1 dam is located at the anchoring point but that the Layer-2 dam is located at the extruded free section. The optimum cross-sectional perimeter ratio is concluded as 0.8 with the optimal anchoring distance of 0.06 L1, the internal water head in the upstream dam, and that in the downstream dam of 0.40 L1 and 0.36 L1 where L1 is the cross-sectional perimeter of the upstream dam.

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来源期刊

Geosynthetics International ENGINEERING, GEOLOGICAL-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

6.90

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： An online only, rapid publication journal, Geosynthetics International – an official journal of the International Geosynthetics Society (IGS) – publishes the best information on current geosynthetics technology in research, design innovation, new materials and construction practice. Topics covered The whole of geosynthetic materials (including natural fibre products) such as research, behaviour, performance analysis, testing, design, construction methods, case histories and field experience. Geosynthetics International is received by all members of the IGS as part of their membership, and is published in e-only format six times a year.