水利水电科技进展Issue(1)：60-65,70,7.DOI:10.3880/j.issn.1006-7647.2016.01.011
高聚物胶凝堆石料技术及其抗震性能
Use of polyurethane foam adhesive-reinforced rockfill material to improve seismic behavior of earth-rockfill dam
摘要
Abstract
In order to improve the integrity and strength of rockfill material as well as the seismic stability of earth-rockfill dams, a new technique of using polyurethane foam adhesive ( PFA)-reinforced rockfill material to reinforce the shallow zone beneath the dam crest and slope, based on analysis of seismic disasters and aseismic measures of high earth-rockfill dams, is presented. The effects of PFA on the mechanical behavior of rockfill material were studied through static and dynamic triaxial tests. The test results show that PFA significantly increases the cohesion of rockfill material, slightly increases the dynamic elastic modulus of rockfill material, and significantly reduces the residual strain of rockfill material. The PFA-reinforced rockfill material show good seismic behavior. The numerical results regarding a high earth-rockfill dam show that, after use of the proposed technique, the minimum safety factor against sliding during an earthquake is increased by 10%, indicating that the seismic stability of the dam is improved.关键词
高聚物胶凝堆石料/土石坝/抗震性能/抗剪强度/动弹性模量/残余变形Key words
PFA-reinforced rockfill materials/earth-rockfill dam/seismic behavior/shear strength/dynamic elastic modulus/residual strain分类
建筑与水利引用本文复制引用
刘汉龙,费康,杨贵,刘平..高聚物胶凝堆石料技术及其抗震性能[J].水利水电科技进展,2016,(1):60-65,70,7.基金项目
长江学者和创新团队发展计划资助(IRT1125) （IRT1125）
江苏省自然科学基金(BK20141279) （BK20141279）
水文水资源与水利工程科学国家重点实验室开放研究基金(2012491111) （2012491111）
