地基对胶结砂砾石坝受力的影响研究

姚辉勇; 李参; 王腾; 刘猛; 张芳芳; 董卫军; 任泽俭

引用本文:	姚辉勇,李参,王腾,等.地基对胶结砂砾石坝受力的影响研究[J].灌溉排水学报,,():-.
	YAO Huiyong,LI Shen,WANG Teng,et al.地基对胶结砂砾石坝受力的影响研究[J].灌溉排水学报,,():-.

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地基对胶结砂砾石坝受力的影响研究
姚辉勇¹, 李参², 王腾², 刘猛¹, 张芳芳³, 董卫军¹, 任泽俭⁴
1.南水北调东线山东干线有限责任公司济南;2.水发集团有限公司济南;3.华北水利水电大学郑州;4.山东润鲁工程咨询有限公司济南

摘要:

胶结砂砾石坝是近年来提出的一种环境友好的新坝型,地基是高坝设计的主要影响因素。为探究地基对胶结砂砾石坝受力的影响,借助于数值模拟手段,基于损伤理论对不同地基下的胶结砂砾石坝进行有限元受力分析,计算结果表明：(1)坝基相同,坝体胶凝材料越少,坝体和坝基产生损伤的可能性越大。(2)坝体材料相同情况下,地基的刚度越大,坝踵处损伤量增大,坝址处损伤减少。故胶结砂砾石结构设计中,需综合考虑坝体材料和坝基进行适当的材料分析,以减少坝体结构损伤。该研究可为胶结砂砾石坝设计及推广应用提供理论依据。

关键词: 胶结砂砾石坝；地基；数值模拟

DOI：

分类号:TV41

基金项目:河南省自然科学：(202300410270)胶凝砂砾石抗冻耐久性行为及劣化损伤机理研究；国家重点研发计划：(2018YFC0406803)胶结颗粒料坝物理、数值模型与性态演变规律

Study on the influence of foundation on the stress of CSG dam

YAO Huiyong¹, LI Shen², WANG Teng², LIU Meng¹, ZHANG Fangfang³, DOGN Weijun¹, REN Zejian⁴

1.Shandong trunk line Co,Ltd,East Route of South to North Water Diversion Project Jinan;2.Shuifa Group Co,Ltd Jinan;3.North China University of Water Resources and Electric Power,College of Water Resources Zhengzhou;4.Shandong Runlu Engineering Consulting Co Ltd Jinan

Abstract:

Cemented Sand and Gravel(CSG) dam is a new type of environmentally friendly dam proposed in recent years, in which the foundation is the main influencing factor in the design of high dams.In order to explore the influence of foundation on the forces of cemented sand and gravel dams, finite element force analysis of Cemented Sand and Gravel dams under different foundations was carried out based on damage theory with the help of numerical simulation methods. The calculation results show that：(1) With the same dam foundation material, the less cementing material there is in the dam, the higher the damage potential of the dam and the dam foundation. (2) For the same dam material, the greater the stiffness of the foundation, the greater the damage at the heel of the dam and the less the damage at the dam site. Therefore, in the structural design of Cemented Sand and Gravel dams, appropriate material analysis of the dam body and foundation is required to reduce the structural damage of the dam. This work could provide a theoretical basis for the design and application of Cemented Sand and Gravel dams.

Key words: Cemented;Sand and;Gravel Dam;Foundation Basic;Section