检索结果-南通市图书馆

维普期刊数据库

INTERACTION OF DAM AND FOUNDATION FOR cfrd CONSTRUCTED ON DEEPALLUVIUMS

在线全文

学校读者我要写书评

暂无评论

INTERACTION OF DAM AND FOUNDATION FOR CFRD CONSTRUCTED ON DE...

中日岩土工程学术会议

作者： ZE-PING Xu Yu SHAO and JIAN-HUI LIANG Professor Department of Geotechnical Engineering China Institute of Water Resources and Hydropower Research Beijing 100044 China

＜正＞ For the cfrd constructed on deep alluviums, numerical method was applied to analysis the stress and deformation properties of the dam, foundation, slab and concrete diaphragm. The interaction between dam and overburden foundation was studied in detail. The analysis results show that: The rational’design for cfrd constructed in deep alluviums is to use vertical concrete diaphragm as the foundation seepage control measures. The key for the design is to keep deformation accordance of different structures, such as dam, slab, plinth, connection slabs, etc. and to meet the requirements of strength and deformation. Although the deformation of alluviums do have impacts on the stress and deformation of dam structures, those impacts could be limited in a certain scale to ensure the safe operation of the dam. For the connecting slabs between diaphragm and plinth, the short or long length may cause adverse impacts on the diaphragm. The proper length of the connecting slabs can be determined by optimal analysis.

关键词： Deep Alluviums cfrd Diaphragm Interaction

FEM ANALYSIS ON THE DAM ZONING OPTIMIZATION OFSHUIBUYA cfrd PROJECT

在线全文

cnki会议

学校读者我要写书评

暂无评论

FEM ANALYSIS ON THE DAM ZONING OPTIMIZATION OFSHUIBUYA CFRD ...

International Conference of Hydropower PROCEEDINGS

作者： CHEN Yun College of Civil Engineering and Architecture Wuhan University of Technology RAO Xibao Changjiang Scientific Research Institute. Wuhan China 430010 CHENG Zhanlin Changjiang Scientific Research Institute. Wuhan China 430010

＜正＞ 3D-elastoplastic numerical analysis method is used to analyze and optimize main rockfill and secondary rockfill zoning schemes of dam for Shuibuya cfrd on Qingjiang River. Results show that if the boundary between main and secondary rockfill zones moves towards the upstream side, stress and deformation of dam and face slab as well as joint displacement will not be increased greatly, and the dam is stable. This optimization scheme is feasible technically.

关键词： Shuibuya project cfrd optimization of dam zoning elastoplastic model of double yield surface FEM

Application of extruded curb technique of cfrd in Shuibuya Project

在线全文

cnki会议

学校读者我要写书评

暂无评论

Application of extruded curb technique of CFRD in Shuibuya P...

International Conference of Hydropower PROCEEDINGS

作者： WANG Yawen LIAO Guangrong ZHOU Junfang China Gezhouba Group Corperation Yichang city Hubei Province P.R.C

＜正＞ Experimental research and application of extruded side wall for upperstream slope of Shuibuya cfrd is introduced. This technique have been firstly applied in Gongboxia cfrd Qinghai Province and in Bajiaohe cfrd in Hubei Province to replace over-fill of bedding material, cutting slope by manpower and machines, rolling and protecting on slope ,etc. During the filling of the first and second stage dam embankment in Shuibuya cfrd, the application of this new technique show its superiority in simplifying the construction processes and raising the construction safety.

关键词： cfrd extruded side wall

STUDY ON ROCKFILL MATERIALS FOR A cfrd BUILT ON INCLINED FOUNDATION SURFACE

在线全文

cnki会议

学校读者我要写书评

暂无评论

STUDY ON ROCKFILL MATERIALS FOR A CFRD BUILT ON INCLINED FOU...

International Conference of Hydropower PROCEEDINGS

作者： XIAO Gongyuan Shanghai Investigation Design & Research Institute Shanghai China

＜正＞ The main dam of upper reservoir of Jiangsu Yixing pumped storage project, China, is a concrete face composite rockfill dam built on inclined foundation surface. The bedrock surface of the dam declines downstream with inclined angle of more than 20 degrees generally and even steeper than 30 degrees locally. The vertical height of the dam from downstream dam toe to dam crest is about 140m. Its stability and stress-deformation conditions are deferent from those of conventional cfrd. A systematic study on rockfill materials for building the dam was made during design. Two special issues, i.e. the shear strength between rockfill and bedrock, and the characteristics of settlement by wetting of rockfill composed of sandstone intercalated with mudstone, are described. Based on the study conclusion the main dam is filled by rock materials excavated in upper reservoir basin, and therefore dam cost is obviously reduced. Some rules revealed by studies may also be useful to design of similar dams.

关键词： cfrd rockfill material inclined bedrock surface stability against slide settlement by wetting Yixing pumped storage project

在线全文

cnki会议

学校读者我要写书评

暂无评论

cfrd 应力应变分析方法评述

南昌水专学报 1998年第2期17卷 9-15,64页

作者：张俊芝孙辉熊义咏

根据混凝土面板堆石坝的应力应变分析资料，对ＣＦＲＤ的应力应变分析方法进行了评述，并提出今后这方面的研究方向．

关键词： cfrd 应力应变分析方法混凝土面板堆石坝

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

严寒地区面板堆石坝(cfrd)

东北水利水电 1988年第8期 7-10页

作者：蔡为武

松辽委蔡为武总工于1987年12月11日致函柯克询向有关严寒地区 C F R D 文献,面板混凝土和反滤料要求,堆石冬季施工等问题。柯克於12月23日复信,现摘译如下

关键词：面板堆石坝 cfrd 堆石填筑坡面碾压严寒地区沥青乳剂

Rockfill material uncertainty inversion analysis of concrete-faced rockfill dams using stacking ensemble strategy and Jaya optimizer

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Water Science and Engineering 2023年第4期16卷 419-428页

作者： Qin Ke Ming-chao Li Qiu-bing Ren Wen-chao Zhao State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300350China Bei Fang Investigation Design&Research Co.LtdTianjin 300222China

Numerical simulation of concrete-faced rockfill dams(cfrds)considering the spatial variability of rockfill has become a popular research topic in recent *** order to determine uncertain rockfill properties efficiently and reliably,this study developed an uncertainty inversion analysis method for rockfill material parameters using the stacking ensemble strategy and Jaya *** comprehensive implementation process of the proposed model was described with an illustrative cfrd ***,the surrogate model method using the stacking ensemble algorithm was used to conduct the Monte Carlo stochastic finite element calculations with reduced computational cost and improved ***,the Jaya algorithm was used to inversely calculate the combination of the coefficient of variation of rockfill material *** optimizer obtained higher accuracy and more significant uncertainty reduction than traditional ***,the developed model effectively identified the random parameters of rockfill *** study provided scientific references for uncertainty analysis of *** addition,the proposed method can be applied to other similar engineering structures.

关键词： cfrd Uncertainty inversion analysis Stochastic finite element Surrogate model Stacking ensemble Jaya algorithm

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

九甸峡混凝土面板堆石坝施工关键技术研究

水力发电 2010年第11期36卷 64-66页

作者：刘建平葛国平周廷江中国水利水电第十二工程局有限公司浙江杭州321004

九甸峡水利枢纽工程大坝最大坝高133 m,基础覆盖层深约45 m,大坝填筑总量约300万m3,是目前国内在深覆盖层上修建的规模最大的高混凝土面板堆石坝,且其两岸边坡陡峭,所处地区属严寒高海拔地区,施工工期紧、难度大,为此,针对深覆盖层坝基... 详细信息

九甸峡水利枢纽工程大坝最大坝高133 m,基础覆盖层深约45 m,大坝填筑总量约300万m3,是目前国内在深覆盖层上修建的规模最大的高混凝土面板堆石坝,且其两岸边坡陡峭,所处地区属严寒高海拔地区,施工工期紧、难度大,为此,针对深覆盖层坝基基础的处理方法、防渗墙施工、陡峭坝基边坡坝体的施工、冬季施工及防裂等施工关键点及难点进行了重点研究,提出了相应的施工技术及方法,并得到了实际应用,取得了良好效果。

关键词：九甸峡混凝土面板堆石坝堆石坝施工关键技术研究 Dam cfrd 深覆盖层水利枢纽工程大坝填筑高海拔地区防渗墙施工实际应用施工技术施工工期基础处理方法冬季施工边坡坝基关键点

维普期刊数据库

在线全文

学校读者我要写书评

暂无评论

混凝土面板堆石坝变形浅析、控制与对策

混凝土面板堆石坝变形浅析、控制与对策

作者：杨和明中国水利水电第十一工程局有限公司

本文对cfrd出现的一系列变形形态进行了归类,并对其产生变形乃至破坏的原因进行剖析,同时提出了变形控制与解决问题的方法,以及处理变形的措施,对往后的cfrd设计、施工,以及运行管理起到借鉴作用。

关键词： cfrd 变形浅析控制对策