Assessment of debris flow multiple-surge load model based on the physical process of debris-barrier interaction
文献类型:期刊论文
作者 | Song, Dongri5,6; Bai, Yitong5,6; Chen, Xiao Qing5,6; Zhou, Gordon G. D.4,5,6; Choi, Clarence E.3; Pasuto, Alessandro2; Peng, Peng1 |
刊名 | LANDSLIDES |
出版日期 | 2022-02-03 |
卷号 | 19页码:1165-1177 |
ISSN号 | 1612-510X |
关键词 | Debris flow Multiple-surge impact Load model Flexible barrier Load profile |
DOI | 10.1007/s10346-021-01778-3 |
英文摘要 | Debris-flow impact load is one of the key parameters for design of engineering countermeasures. The multiple-surge load model is a remarkable progress in estimating the debris-flow impact load, which clearly delineates the contribution of each surge to the total impact load and the corresponding acting points. In order to better understand the impact process of channelized debris flow against flexible barrier, a series of medium-scale flume experiments with varying debris-flow volumetric solid concentration (0.40/0.50/0.55) were conducted. Especially, surge impact behavior is focused so that the predictability of the multiple-surge load model could be assessed. The flume and model flexible barrier were instrumented so that both the barrier dynamic response and the debris-flow properties (flow regime) could be correlated to facilitate the assessment. The results show that multiple-surge load model well predicts the total impact load. However, due to the simplification in the impact process, the interaction between the mobile phase (surge) and the deposited phase is ignored, resulting in discrepancy in the load distribution between the model prediction and experimental result. The remixing of deposited debris by the subsequent surges leads to downward momentum transfer to the lower section of barrier, which should be regarded as an adverse scenario of the design of flexible-barrier anchor capacity. |
资助项目 | National Natural Science Foundation of China[41925030] ; National Natural Science Foundation of China[42077256] ; National Natural Science Foundation of China[51809261] ; CAS Light of West China Program ; Sichuan Science and Technology Program[2020YJ0002] |
WOS研究方向 | Engineering ; Geology |
语种 | 英语 |
出版者 | SPRINGER HEIDELBERG |
WOS记录号 | WOS:000749968700001 |
资助机构 | National Natural Science Foundation of China ; CAS Light of West China Program ; Sichuan Science and Technology Program |
源URL | [http://ir.imde.ac.cn/handle/131551/56422] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Chen, Xiao Qing |
作者单位 | 1.PowerChina HuaDong Engn Corp Ltd, Hangzhou, Peoples R China 2.Natl Res Council Italy, Res Inst Geol & Hydrol Hazard Prevent, Padua, Italy 3.Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China 4.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 5.Univ Chinese Acad Sci, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China |
推荐引用方式 GB/T 7714 | Song, Dongri,Bai, Yitong,Chen, Xiao Qing,et al. Assessment of debris flow multiple-surge load model based on the physical process of debris-barrier interaction[J]. LANDSLIDES,2022,19:1165-1177. |
APA | Song, Dongri.,Bai, Yitong.,Chen, Xiao Qing.,Zhou, Gordon G. D..,Choi, Clarence E..,...&Peng, Peng.(2022).Assessment of debris flow multiple-surge load model based on the physical process of debris-barrier interaction.LANDSLIDES,19,1165-1177. |
MLA | Song, Dongri,et al."Assessment of debris flow multiple-surge load model based on the physical process of debris-barrier interaction".LANDSLIDES 19(2022):1165-1177. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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