Intact soft clay’s critical response to dynamic stress paths on different combinations of principal stress orientation

Comprehensive tests on Hangzhou intact soft clay were performed, which were used to obtain the soils’ critical response to undrained dynamic stress paths under different combinations of principal stress orientation. The different combinations included cyclic principal stress rotation (CPSR for short), cyclic shear with abrupt change of principal stress orientation (CAPSO for short) and cyclic shear with fixed principal stress orientation (CFPSO for short). On one side, under all these stress paths, samples have obvious strain inflection points and shear bands, and the excess pore water pressure is far from the level of initial effective confining pressure at failure. Stress paths of major principal stress orientation (α) alternating from negative and positive have quite different influence on soil’s properties with those in which α is kept negative or positive. On the other side, due to the soil’s strongly initial anisotropy, samples under double-amplitudes CPSR and CAPSO (or single-amplitude CPSR and CFPSO) have similar properties on dynamic shear strength and pore water pressure development tendency when α is kept within ±45°, while have quite different properties when α oversteps ±45°.     

解读连战先生的民族情

文章试图从两方面解读连战先生深厚的民族情.这种民族情一方面来源于他的家族,连战的先祖到台湾死也不臣服清,曾祖父至父亲三代以各种形式坚持抗日及父母对他言传身教;另一方面与他早年在祖国大陆的生活经历有关,从他对抗战和日本的态度及祖国大陆寻踪等方面体现出来.     

Evaluation of ultimate bearing capacity of Y-shaped vibro-pile

Based on Mindlin stress solution, a numerical computational method was proposed to calculate the stresses in the ground induced by side friction and the resistance of Y-shaped vibro-pile. The improved Terzaghi’s and ЪерезанцевВГ’s methods for ultimate bearing capacity evaluation were proposed by considering the stress strength induced by friction resistance at pile head level of Y-pile. A new method to calculate the ultimate bearing capacity of Y-pile was also proposed based on the assumptions of soil failure mode at the tip of Y-pile and the use of Mohr-Coulomb soil yield criterion and Vesic compressive correction coefficient with the induced stresses in the ground. Based on the comparisons with the field static load test results, it is found that the improved Terzaghi’s method gives higher ultimate capacity, while the other two methods shows good agreement with the field results.     

Adhesion coefficient of automobile tire and road surface

The adhesion coefficient of automobile tire and road surface was analyzed and the formula about it was derived.Some suggestions about highway construction,driving safety of the drivers and the judgment of the traffic accidents were presented.The results show that the adhesion coefficient is a function with the extreme value.If there is atmospheric pressure in the tire,the load of the vehicle and the degree of the coarse on the road surface is not selected properly,it will reach the least and affect the safety of the running automobile.     

Effects of stress conditions on rheological properties of granular soil in large triaxial rheology laboratory tests

In order to study the rheological properties of red stone granular soil,a series of rheological experiments were executed on large tri-axial rheological apparatus.Under 100,200 and 300 kPa confining stress conditions,the rheological tests were carried out.These experiment results showed that the stress conditions,especially the stress level were the critical influencing factors of the rheological deformation properties.Under the low stress level(S=0.1),the granular soil showed the elastic properties,and there was no obvious rheological deformation.Under the middle stress level(0.20.8) creep curves showed the non-linear viscous plastic rheological properties.Especially,under the stress level of S=1.0,the accelerated rheological phase of creep curves occurred at early time with a trend of failure.The stress level had obvious effects on the final rheological deformation of the soil sample,and the final rheological deformation increments nonlinearly increased with stress level.The final rheological deformation increment and step was little under low stress level,while it became large under high stress level,which showed the nonlinearly rheological properties of the granular soil.The confining pressure also had direct effects on final rheological deformation,and the final rheological deformation linearly increased with confining pressure increments.     

2008年我国房地产业的发展模式与市场把握

在深入市场调查、认真采集数据和科学分析研究的基础上,从我国新一年房地产业发展的"背景和环境"、"预期和责任"、"风险和影响"、"保障和创新"等方面进行阐述和论证.     

窃取商业秘密获得的专利权归商业秘密权利人所有——兼谈商业秘密构成要件和范围

中国加入WTO以后,知识产权的保护意识日益强化,作为知识产权范畴的专利权更是被人们普遍关注和重视.以"错案"为研究对象,运用商业秘密的有关理论以及保护商业秘密和专利权的有关法律制度,特别是从窃取商业秘密获得的专利权归谁所有的角度,对人民法院的判决进行了分析研究,指出了人民法院的判决是错误的,提出了窃取商业秘密获得的专利权归商业秘密权利人所有.这有利于人民法院公正司法,依法审判.     

从语气助词的角度浅析日语表达方式的特性

日语中有着十分丰富的语气助词,其虽然不具有实际的意义,然而通过语气助词,却能够流露出说话者的心情和感受,传递出不溢于言表的隐性含义,在日常的表达中扮演着十分重要的角色.从语气助词的角度,分析总结日语在表达上所具有的特性.     

Additional water use influencing strength and fluidity of recycled concrete

Through adding different additional water use,the compressive strength,splitting tensile strength and fluidity of recycled concrete of three aggregate combination forms were studied by experiment respectively.The experimental results show that with the increase of adding additional water use,the compressive strength and splitting tensile strength of recycled coarse aggregate concrete decrease,but that of recycled fine aggregate concrete and recycled all aggregate concrete increase firstly then decrease.When additional water use is added more 15% or 20% than that of basic ordinary concrete,the recycled coarse aggregate concrete and fine one can get pretty good fluidity.When it is added more 30%,the recycled all aggregate concrete has fluidity that is just satisfied.     

情趣与意象的契合——《逢雪宿芙蓉山主人》与《雪夜林边驻脚》之比较

通过分析《逢雪宿芙蓉山主人》与《雪夜林边驻脚》两诗的情趣和意象,发现两诗都采用了大致相似的意象.但由于诗人各自的文化传统的差异,在两诗中所传达的情趣却不同.然而,正是由于两诗各自在情趣与意象上的契合,才创造出了各自完美的诗境.     

"石"与"木"

本文围绕“永恒”这一中心，就欧洲的“石艺术”和中国的“木艺术”进行了比较．作了随想式的阐发，并对“石艺术”，“木艺术”的产生原由和文化蕴涵提出点滴看法。     

关于"坳""拗","心""芯"的使用及其它

在我们的日常编辑工作中,经常遇到有些作者在来稿中将"坳"与"拗","心"与"芯"混用的情况,如"黄骅坳陷"或"济阳拗陷","取心井"或"取芯井","岩心分析"或"岩心驱替实验"等.     

“为”与“搞”之比较

古代汉语"为"字与现代汉语"搞"字有许多相似点与不同处,可比性极强。从共时和历时的角度对它们进行比较分析是必要和可行的。语义方面,二者均为泛义动词,但各有侧重;语法方面,都主要作动词,但在造句功能和相对位次上存有差异;语用方面,在语体色彩和语言风格上表现不同。     

“高技术“与“高情感“的融合——当代高技派建筑创作思想与设计手法追寻

高技派建筑在20世纪50年代，其注意力主要集中在高新技术的采用与构件的装配化、标准化方面；20世纪70年代则以强调和表现现代工业技术为主要特征；20世纪90年代，在现代信息社会可持续发展的设计理念下开始蜕变，转向改变自身以适应信息时代高技术与高情感相融合的要求，以及更加注重建筑与自然环境、城市文脉、生态环保及人类的感情需要等高情感环节上，而成为建筑未来的主要发展方向之一。     

都市的"动"与"静"

都市是由 动 和 静 两部分因素组成的一种次序状态 .两者之间的协调关系对都市里的人们起着潜在的影响 .通过分析街道景观设计中这种构成关系 ,尝试把人们的生活、工作、娱乐活动融入到都市的环境中 .     

论“历史”和“创造历史”

人类社会进入了二十一世纪,改革开放以来,在新的历史条件下,中国社会发生了广泛而深刻的变化,充分认识和准确把握我国社会已经和正在发生的变化,必须根据实践不断进行新的探索,对“历史”和“创造历史”,越来越醒目地凸显出来,唤起人们的关注和研究,从而引发出哲学深层次的思考。本文就历史的自然过程、形式逻辑及方法、要素、界定、质疑、特征、规律和实践的检验,进行一些理论上的论证与探析,试图从中得出结论,请教于理论界同仁。     

“延迟退休”与“提前退休”

近期"延迟退休"的话题备受关注,但人们却忽视了比较突出的"提前退休"问题。"提前退休"如何界定?"提前退休"的现状如何?"提前退休"对养老保险制度有什么影响?本文对此进行了讨论,并提出了抑制"提前退休"的政策建议。     

“兴”与“移情”之比较

发源于古希腊罗马文明的西方文化与发源于黄河流域的东方文化是当今世界两大主流文化 ,两种文化瑰丽无比而又各具特色。笔者从两种文化中各拈出一个具有代表性的美学范畴—“兴”与“移情” ,来追寻两种文化的异同。     

口译传播中的"熵"与"原语效应"

口译同笔译相比,即席性强,压力大,独立性强,综合性强,知识面宽.口译过程涉及听力、记忆和口头表达;口译是需要当场、即时完成的,译员通常听到的是不再重复的话语,在正解理解的同时必须立即独立地进行一次性的翻译.一般情况下,译员不大可能在现场求助于他人、查阅词典或其他资料,译者不可避免地会"照本宣科"或出现"译文的信息冗余".首先介绍了口译传播中的"熵"与"原语效应", 然后总结了相应的口译对策.