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.     

关于建筑工程造价预算控制要点的几点思考

本文作者针对目前建筑工程造价预算控制中所存在的一些问题进行了分析和探讨。在此基础上,提出了一些实际工作中应注意的要点,以及加强造价预算控制的方法,供同行参考。     

计算机在建筑工程造价中的应用

简要介绍了目前建筑工程预算软件的发展过程和我国目前使用较广、具有一定特色的预算软件的功能特点．及IT技术在我国工程造价管理工作中应用情况．     

土建施工图预算的审查方法

着重于对土建施工图预算六种审查方法的分析讨论,帮助工程预决算人员采用适当的方法合理确定土建工程造价。     

预算管理系统下计算机预算控制系统的构建

本文讨论了计算机预算管理系统下计算机预算控制系统的构建问题。文章首先对预算、预算控制以及预算控制系统的概念和内涵作了定义,引出建立计算机预算控制系统的必要性;在此基础上,本文详细阐述了计算机预算控制的原理、系统结构以及系统的特点;最后,作者对于如何构建有效的计算机预算控制系统提出两点自己的看法。     

计算机技术在工程预算与施工组织设计中的应用

计算机辅助手段来编制的投标预算和施工组织设计,具有操作简便、出错率少、简洁高效的特点,可提高工作效率,对提高企业中标率具有实质性的意义.     

建筑工程预算中抗震框架梁钢筋工程量的计算

在建筑工程预算中,钢筋工程量的计算是非常重要的一部分。抗震框架结构中,框架梁钢筋的取值显得尤为的重要,框架梁钢筋的布置和工程量准确抽取,对工程预算的准确性尤为重要。     

投资估算、设计概算的合理确定

能否合理确定投资估算、设计概算将直接影响到投资资金筹措和计划的落实,并能有效地遏止"三超"现象产生.静态投资估算方法很多,但估算法中的系数在应用上都存在着不足.直接采用拟建项目地区的综合单价、其他费用定额,准确度较其它方法要高得多.加强设计人员、经济技术人员的配合,能更准确地确定工程造价.     

高职院校构建院系两级预算管理体系的探索

通过分析高职院的财务管理体制和预算管理体制的关系以及构建院系两级预算管理体系的必要性,进而提出了构建高职院院系两级预算管理体系的途径。     

浅谈企业预算松弛管理

在分权式预算管理模式下,由于预算执行者参与预算的编制过程,使许多企业存在着预算松弛的现象。本文分析了预算松弛产生的原因及其对预算管理的负面影响,提出了解决预算松弛问题的对策。     

工程预算定额套用中几个常见问题的探讨

当前工程项目管理正朝着规范化方向发展,作为建设项目投资控制手段的工程预算定额就显得非常重要。本文就建设工程预算定额套用中几个常见的问题进行了探讨。