沥青混凝土心墙风化料坝的设计及变形特性
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摘要
以云南省在建的某沥青混凝土心墙风化料坝为例,阐述沥青心墙及筑坝材料特性,采用非线性模型模拟坝体竣工期及蓄水期应力变形,研究坝体及心墙应力变形分布特点。在分层加载分析中,心墙变形沿坝高方向呈现明显的抛物线变化趋势,且最大位移始终发生在坝高2/3左右的位置,心墙内部应力主要表现为压应力,不会发生水力劈裂破坏。
Taken the weathering material dam with asphalt concrete core under construction in Yunnan province as an example, the characteristics of asphalt core wall and dam-building materials are expounded. The nonlinear model is used to simulate the stress and deformation of the dam during the completion and impoundment period. In the analysis of layered loading, the asphalt concrete core wall deformation shows an obvious parabolic change trend along the direction of dam height, and the maximum displacement always occurs at about 2/3 of dam height. The stress inside the core wall is mainly compressive stress; the results show that hydraulic fracturing does not occur.
Taken the weathering material dam with asphalt concrete core under construction in Yunnan province as an example, the characteristics of asphalt core wall and dam-building materials are expounded. The nonlinear model is used to simulate the stress and deformation of the dam during the completion and impoundment period. In the analysis of layered loading, the asphalt concrete core wall deformation shows an obvious parabolic change trend along the direction of dam height, and the maximum displacement always occurs at about 2/3 of dam height. The stress inside the core wall is mainly compressive stress; the results show that hydraulic fracturing does not occur.
引文
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[3] 王柏乐.当代土石坝工程[M].北京:中国水利水电出版社,2004.
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