姚仰平
岩土工程专业
个性化签名
- 姓名:姚仰平
- 目前身份:
- 担任导师情况:
- 学位:
-
学术头衔:
博士生导师
- 职称:-
-
学科领域:
岩土力学
- 研究兴趣:岩土工程专业
岩土工程专业博士,北京航空航天大学土木工程系教授、博士生指导教师。西安交通大学及日本名古屋工业大学JSPS博士后。作为访问教授2次去日本名古屋工业大学共同研究。主要学术成就有:(1)与他人合作提出了一个全新的变换应力的三维化方法,该文发表在国际著名杂志《Journal of Engineering Mechanics,ASCE,2000》上,为现行岩土三维化方法―扩展Mises准则及g (q)方法之后的一个能考虑在π平面上应力诱导各向异性的新方法,在不增加模型参数的情况下可模拟岩土复杂的三维特性。对于只考虑第一和第二应力不变量的本构模型,通过使用变换应力可以简便地将其推广为一个包括第三应力不变量的新的三维模型;(2)建立的剪缩和剪胀材料均适合的统一硬化参数,能把剪缩和剪胀材料的硬化放在一个一致的框架内来考虑,可反映剪胀材料低应力比下的剪缩和高应力比下的剪胀特性,对揭示岩土材料的剪胀机理,说明各种材料的临界状态都有着重要的理论意义,是建立弹塑性模型的基础。承担(或主要参加)国家自然科学基金项目2项、教育部回国留学人员基金项目1项。主要学术兼职有:(1)中国土力学及岩土工程学会理事;(2)国际土力学协会会员;(3)全国湿陷性黄土工作委员会委员;(4)中国振动工程学会土动力学委员会委员;(5) 中国岩石力学及工程学会环境岩土工程学会理事。主编专著一本、主编教材二本、参编教材二本;在国内外学术刊物及会议上发表论文50多篇,被SCI或EI 收录的有30余篇。主要获奖有:国务院政府特贴、陕西首届青年科技奖、省部级一等奖1项,省部级二等奖3项。
-
主页访问
3514
-
关注数
0
-
成果阅读
526
-
成果数
9
姚仰平, , 罗汀
,-0001,():
-1年11月30日
在分析了岩土材料(包括剪胀和非剪胀材料)屈服、硬化的基础上,揭示了基本硬化内参量(塑性体积应变,塑性剪应变)变化的应力路径相关性的本质,提出了应力路径无关硬化参数的一般表达式。并指出了塑性功硬化参数及作者等提出的粘土和砂土统一硬化参数均是所提一般表达式框架下的特例。
粘土, 砂土, 应力路径, 硬化参数数
-
108浏览
-
0点赞
-
0收藏
-
0分享
-
263下载
-
0评论
-
引用
姚仰平, 路德春
力学学报,2005,1,-0001,():
-1年11月30日
应力路径相关性是土的重要力学特性。本文将微元应力路径线性逼近,转变成与其充分接近且易于计算应变的等平均应力微元和等应力比微元,计算任意加荷应力路径所产生的塑性应变,建立了双屈服面的砂土应力路径本构模型,模型体现了岩土塑性理论分量屈服和非关联流动法则的要求,在p,q平面内根据双线性的屈服线确定了加卸载准则。结合广义非线性强度理论采用变换应力三维化方法简单、合理地使模型实现三维化。通过试验数据的验证表明,砂土应力路径本构模型可以合理的描述各种应力路径下砂土的变形和强度特性。
砂土,, 应力路径,, 本构模型,, 广义强度理论,, 变换应力,, 试验
-
48浏览
-
0点赞
-
0收藏
-
0分享
-
211下载
-
0评论
-
引用
姚仰平, 罗汀, 孙德安, 松冈元
岩土工程学报,2002,24(2):240~246,-0001,():
-1年11月30日
把修正剑桥模型推广为适合于黏土和砂土的简单、统一三维本构模型是基于以下两点提出的:第一点,把由笔者已提出的基于SMP准则的一个变换应力张量用于修正剑桥模型使其简单实现了三维化,改进的模型对于黏土实现了从剪切屈服到剪切破坏的统一及临界状态理论同SMP准则的结合;第二点,为了建立对于黏土和砂土简单、统一的本构模型,推导出了一个新的硬化参数,新硬化参数不仅能描述砂土不同程度的剪胀性,对于正常固结黏土又能退化成塑性体积应变,所提硬化参数的合理性也被各种路径下分别在三轴压缩和三轴伸长下的试验结果所证实。所提模型的计算参数仅为5个常规试验参数,易于确定。
黏土, 砂土, 弹塑性模型, 硬化参数, 三维化
-
81浏览
-
0点赞
-
0收藏
-
0分享
-
258下载
-
0评论
-
引用
姚仰平, , 张保印, 张国强, 张炜
岩土工程学报,2001,23,(3):324~329,-0001,():
-1年11月30日
通过对黄土地区高层建筑的单桩静载试验结果和工程桩受力及筏板承受反力的原位实测结果进行分析研究,阐述了黄土地基中钻孔灌注桩的受力特性,揭示了工程桩桩顶荷载和筏底土压力的大小及其分布规律。实测表明,筏板与其下黄土之间存在着较大的接触压力,群桩与桩间土共同承担着建筑物的总荷载。本工程中桩间土分担荷载高达28.6%。还分析了筏底土压力的分布机理,探讨了影响桩间土分担荷载作用的因素。另外,还讨论了高层建筑裙房下桩体出现拉力的原因。
黄土, 高层建筑, 桩筏基础, 共同工作, 原位实测
-
44浏览
-
0点赞
-
0收藏
-
0分享
-
205下载
-
0评论
-
引用
姚仰平, 路德春, 周安楠, 邹博
工程科学材料科学,2004,34(11):1283~1299,-0001,():
-1年11月30日
基于摩擦材料的试验规律和在前人研究成果的基础,提出了广义非线性强度理论,它用一个表达式统一描述π平面及子午面上各种材料的非线性强度特性,包含或逼近了现有的非线性单一强度理论。在主应力空间中,广义非线性强度理论在π平面上的破坏函数为介于SMP准则和Mises准则之间的光滑曲线;在子午面上的破坏函数为幂函数曲线。在基于广义非线性强度理论的变换应力空间内,广义非线性强度理论可以合理地与各种以p和q为应力参量的本构模型相结合,使模型简单地实现三维化。
非线性, 广义强度理论, 变换应力, 本构模型, 应用
-
40浏览
-
0点赞
-
0收藏
-
0分享
-
148下载
-
0评论
-
引用
【期刊论文】THE CAM-CLAY MODELS REVISED BY THE SMP CRITERION
姚仰平, HAJISET MATSUOKA, YAO and DE'AN SUN
SOLLS AND FOUNDATIONS Vol. 39, No.1, 81-95, Feb, 1999,-0001,():
-1年11月30日
The Cam-clay models were originally developed through theoretical considerations and experimental results under triaxial compression condition, and extended to three-dimensional models by using strees parameters p and q. A ctiterion of the Extended Mises type was adopted for the shear yield and faiture of clay in Cam-clay models. However, it is well known that the failure of soil is not explaomed bu the Extended Mises eriterion but by a criterion of the Mohr. Coulomb type or the SMP (Spatially Mobilized Plance) type and others. Taking the consistency in the shear deformation and the shear failure into account. It is quite natural to introduce the Mohr-Coulomb or SMP criterion for the shear yield as well as the shear failure of soil. In this paper, a transformed stress tensor бυis proposed, which is deduced from what makes the SMP criterion become a cone in the transformed principal stress space. The transfotmed stress tensor бυis applied. As an example, to the Cam-clay models to improve their capability to deserbe the behavior of soils in general stresses including traxial compression. The Cam-clay models revised by the transformed stress tensor бυ can explain well the drained and imdrained behavior of elay not only under triaxial compression, but also under triaxial extension, plane strain, and true triaxial conditions. The present paper provides a reasonable and simple approach for extending the models using stress parmeters p and q to the three-dimensional models by adopting бυ instead ofбυ.
Clay,, constituative equation of soil,, deformation,, failure,, stress path,, stress-strain curve (, IGC: D6),
-
42浏览
-
0点赞
-
0收藏
-
0分享
-
94下载
-
0评论
-
引用
【期刊论文】APPLICATION OF LADE'S CRITEION TO CAM-CLAY MODEL
姚仰平, By Yang-Ping Yao and De'An Sun
,-0001,():
-1年11月30日
Lade's criterion is one of the best criteria for deseribing the shea yield and failure behavior of soils in 3D stresses, and the original Cam-clay model is the most popular and fundmental elsastoplastic model for normally consolidated clays. In this paper, a transformed strees tensor is proposed for combining Lade's criterion and the Can-clay model The transformed stress is deduced from what makes the curved surface of Lade's criterion become a cone with the axis being the space diagonal, i.e., Lade's criterion becomes the extended Mises type criterion in the mechanical behavior of soils in general stresses. It is presented that the revised model can simulate well the drained and undrained behavior of soils, not only under triaxial compression conditition. But also under plane strain, true triaxial, and hollow cylinder conditions. The elastoplastic models for soils in which only the first and second stress invariants are used.can be extended simply to the model, including the third stress invariant by adopting Lade's criterion.
-
43浏览
-
0点赞
-
0收藏
-
0分享
-
86下载
-
0评论
-
引用
【期刊论文】A critical state model for sands dependent on stress and density
姚仰平, Y. P. Yao, *, †, D. A. Sun and T. Luo
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS Int. J. Numer. Anal. Meth. Geomech., 2004; 28: 323-337,-0001,():
-1年11月30日
An elastoplastic model for sands is presented in this paper, which can describe stress-strain behaviour dependent on mean effective stress level and void ratio. The main features of the proposed model are: (a) a new state parameter, which is dependent on the initial void ratio and initial mean stress, is proposed and applied to the yield function in order to predict the plastic deformation for very loose sands; and (b) another new state parameter, which is used to determine the peak strength and describe the critical state behaviour of sands during shearing, is proposed in order to predict simply negative/positive dilatancy and the hardening/softening behaviour of medium or dense sands. In addition, the proposed model can also predict the stress-strain behaviour of sands under three-dimensional stress conditions by using a transformed stress tensor instead of ordinary stress tensor.
sands, elastoplastic model, confining stress dependency, density dependency, three dimension
-
52浏览
-
0点赞
-
0收藏
-
0分享
-
119下载
-
0评论
-
引用