| 方崇惠,段亚辉,方朝阳,方波青.定量计算混凝土拱坝溃口范围可靠度方法研究与应用[J].水利学报,2013,44(3): |
| 定量计算混凝土拱坝溃口范围可靠度方法研究与应用 |
| A new quantitative determine the breach scope method by structural reliabilityand applicaton to concrete arch dam |
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| DOI： |
| 中文关键词: 结构体系 单元组 可靠度 失效概率 溃坝 溃口范围 |
| 英文关键词: structure system the element group conception reliability failure probability dam break quantitative failure scope |
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| 中文摘要: |
| 溃坝洪水突发性强、危害巨大，计算既有工程溃坝洪水时的溃口范围至今都是假定，不能反映复杂坝体结构在不同荷载作用下溃决的实际。为了较合理定量判定溃口范围，在研究拱坝结构体系和溃口特点的基础上提出了单元组概念，采用可靠度来表征单元和单元组是否安全可靠，给出了单元组和整个结构体系可靠度计算方法；提出和采用贯穿坝体的单元组失效概率，来评估溃口发生部位、范围，并根据结构承载能力可靠度（失效概率）评价指标定量确定溃口几何尺寸；找到了采用可靠度（或失效概率）评价指标定量确定溃口范围的一种新方法。并对招徕河碾压混凝土双曲拱 |
| 英文摘要: |
| In order to quantitative predicate the failure scope of dams， this paper put out an element group conception which is consisted of a group of elements throughout the dam body. The dam body safety
status is simulated by a 3D finite element model. A new structural reliability method for calculating the dam breach scope has been found， by which the failure scope of dam can be predicated quantitative. The Zhaolaihe RCC arch dam is taken as an example to show the applicability of the new method. |
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