Study on long-term behavior of steel-reinforced concrete columns under axial sustained compression

随着国民经济的快速发展，钢骨混凝土结构的应用越加广泛，人们对钢骨混凝土结构的了解也越来越全面和深入，目前，对于钢骨混凝土柱的研究主要是集中在其极限承载力、粘结强度与抗震性能等方面，对于长期荷载作用下混凝土的收缩、徐变等力学特性的研究还较少。而且目前对钢-混凝土组合结构的长期荷载作用的性能的试验与理论研究主要还是针对钢管混凝土。然而，由于钢管混凝土中的混凝土处于钢管内，而钢骨混凝土中的混凝土则是外露于环境中，二者在长期荷载作用下的收缩和徐变特性必然会不同。因而对于钢管混凝土的研究得到的结论不能完全应用于钢骨混凝土柱。因此，本文对钢骨混凝土柱在长期轴向荷载作用下的收缩徐变引起的变形性能以及收缩徐变...With the development of the national economy, steel reinforced concrete (SRC) has been widely used, people's understanding of SRC is also becoming more comprehensive and in-depth, so far, study on SRC columns is mainly concentrated in the ultimate axial capacity, the cohesional strength and the seismic performance of SRC columns,research on the shrinkage and creep of concrete under axial sustained...学位：工学硕士院系专业：建筑与土木工程学院_结构工程学号：2532011115173

EXPERIMENTAL STUDY ON THE TIME-DEPENDENTBEHAVIOR of SHORT STEEL-REINFORCED CONCRETE COLUMNS UNDER SUSTAINED AXIAL LOADING

钢骨混凝土柱结构在过去几十年间已得到广泛的运用。但是目前关于这种柱结构在长期荷载作用下由于徐变和收缩引起的与时间相关的力学性能研究还开展得很少。该文开展了钢骨混凝土短柱的长期轴向荷载试验研究,还进行了这些柱的极限承载力破坏试验。试验监测了由徐变和收缩引起的柱的轴向长期变形。基于该实测曲线的分析表明,采用ACI 209r-92的收缩模型和CEb-fIP90的徐变模型,利用龄期调整有效模量法可以较好地模拟钢骨混凝土柱在长期轴向荷载作用下的变形发展。经历了长期加载后的试验柱的极限承载力破坏试验还表明,长期轴向荷载对柱的轴压承载力没有显著影响。Steel-reinforced concrete(SRC) columns have been widely used over the past few decades.However, very limited research has been conducted on the time-dependent behavior of these columns caused by creep and shrinkage under sustained loadings.This paper provides an experimental study on the long-term behavior of short SRC columns under sustained axial loadings and their ultimate axial bearing capacity.Long-term axial deformation due to shrinkage and creep of the concrete were recorded.Based on test results, time-dependent analysis of the SRC columns under sustained axial loadings using the age-adjusted effective modulus method was proved to be effective by employing the ACI 209R-92 model for the prediction of shrinkage and the CEB-FIP90 model for creep.The ultimate strength of the columns after long-term loading was also determined and results showed that the axial sustained load had no significant effect upon the axial compressive strength of SRC columns.国家自然科学基金项目(50908197); 福建省自然科学基金项目(2009J05135

The Investigation Report on Current Status of Sports Consumption in Xiamen

通过对厦门市各阶层人士进行问卷调查 ,对体育经营企业的经营状况实地了解 ,分析厦门市体育消费现状。在 1998年厦门市家庭年均收入为 2 5 6 6 2元 ,年均体育消费为 75 4.95元。在体育消费种类上以体育物质产品消费为主 ,占消费总额的 6 5 .76 %。激发体育消费的因素主要有 :为了身体的健康、个人兴趣爱好等。影响体育消费的主要因素 :价格较高、没时间等。法人体育消费额达 10 0 0万元 (1998年 ) ,目前正呈良好的发展趋势。In order to investigate the sports consumption in xiamen, a total of 2000 questionnaire have been sent out with 1921 taken back. In 1998, the average family income per year is RMB 25662, while the average sports consumption is RMB 754.95. The expenditure on sports products is about the 65.76% of whole expense. The main factors for stimulating expenditure are for health, personal interests and hobbies. High prices and lack of time hamper people from consumption in Xiamen. Legal person sports consumption occupies a quite percentage and reaches 10 million

2017年春季鲍鱼苗种生产情况调研分析

为准确把握2017年鲍鱼生产形势，我们组织开展2017年春季鲍鱼苗种生产情况调研。本次调研采取问卷调查、电话咨询、现场走访及专家会商等方式进行。总体上看，2017年春季鲍鱼苗种生产增量幅度较大，已超过养殖需求,苗价回落明显；今年投苗量增加明显，正常情况下，明年养殖存塘量随之增大，预计明年商品鲍鱼可能面临新一轮的跌价考验

福建省人力资源管理学科发展研究报告

人力资源管理学科发展短却迅速,福建省人力资源管理学科发展也很迅猛。本研究从人力资源开发、战略人力资源管理、招聘与就业、绩效管理、薪酬管理、职业发展、员工关系管理、团队管理、跨文化管理、闽台人才交流合作等方面,对福建省人力资源管理研究者研究成果或人力资源管理研究者在福建省学习期间的研究成果进行综述。分析福建省人力资源管理学科发展的趋势,提出福建省人力资源管理学科发展的对策与建议

献血者中戊型肝炎病毒血症研究

目的　了解湖州地区献血者戊型肝炎病毒感染情况。方法　采用ELISA法检测 30 4 7名无偿献血者血清抗 HEVIgM和IgG抗体 ,巢式RT PCR检测抗 HEVIgM阳性血清中HEVRNA。 结果　 30 4 7名无偿献血者中抗 HEVIgG的检出率为 4 1.7% ,抗 HEVIgM检出率为 1.5 %。 4 6份抗 HEVIgM阳性中发现 6份HEVRNA阳性。献血者中病毒血症阳性率为 0 .2 %。 6名HEV病毒血症者中 4名为HEV基因Ⅰ型 ,另 2例为HEV基因Ⅳ型。结论　在献血者中HEV病毒血症并不罕见 ,有必要对输血后戊肝的潜在危险进行评估

沿海产盐区与非产盐区18～45岁人群碘营养状况及甲状腺功能水平研究

目的掌握厦门市沿海产盐区与非产盐区居民盐碘、18～45岁人群碘营养和甲状腺功能水平状况,为采取针对性的防治措施提供依据。方法选择沿海产盐区翔安区和非产盐区集美区为调查点,调查居民合格碘盐食用率、18～45岁育龄期妇女和男性尿碘水平、甲状腺激素水平和海带、紫菜的摄入习惯。结果产盐区和非产盐区盐碘中位数均为27.21 mg/kg,合格碘盐食用率分别为95.33%和96.33%;18～45岁男性尿碘中位数分别为206.55μg/L和232.95μg/L,尿碘<100μg/L的比例分别为20.97%和10%;18～45岁育龄期妇女尿碘中位数分别为176.95μg/L和227.70μg/L,尿碘<100μg/L的比例分别为21.67%和25%;产盐区和非产盐区18～45岁男性和育龄期妇女的甲状腺激素TSH、Tg、FT3、FT4、TPOAb、TT3、TT4中位数均在正常值范围内;产盐区18～45岁男性的甲状腺功能亢进阳性率为3.4%、育龄期妇女的甲状腺功能减退和亚临床甲状腺减退症的阳性率均为1.67%,而非产盐区均为0。产盐区和非产盐区18～45岁男性和育龄期妇女中均有一定比例易患甲状腺免疫性疾病的人群。每月食用海带、紫菜的次数≥4次、1～3次和<1次的人尿碘组间比较无统计学差异。结论产盐区和非产盐区18～45岁男性和育龄期妇女碘营养总体处于适宜状态,应坚持食盐加碘措施,对育龄期妇女在婚前体检时开展常规碘营养水平和甲状腺功能检测

Long-term Deformations of Steel-reinforced Concrete Columns Under Sustained Axial Loads

钢骨混凝土柱结构已被广泛应用在高层建筑结构中,但是,关于这类柱结构在长期荷载作用下,由于混凝土的徐变和收缩引起的与时间相关的力学特性的研究还很少.开展了钢骨混凝土短柱在长期轴向荷载作用下相关特性的试验研究,获得了由于混凝土的收缩和徐变导致的长期轴向变形曲线.基于该实测曲线的分析表明,采用ACI 209的收缩模型和CEb-fIP90的徐变模型,利用龄期调整有效模量法可以较好地模拟钢骨混凝土柱在长期轴向荷载作用下的变形发展.Steel-reinforced concrete(SRC)columns have been widely used over the past few decades.However,very limited research has been conducted on the time-dependent behavior of these columns caused by creep and shrinkage under sustained loading.This paper presents the results of an experimental study of the long-term behavior of short SRC columns under sustained axial loading.Longterm axial deformations due to shrinkage and creep of the concrete were recorded.In analysis of the test results,time analysis of the SRC columns under sustained axial loads using the age-adjusted effective modulus method was proven to be suitable by employing the ACI 209model for prediction of shrinkage and the CEB-FIP90model for the prediction of creep.国家自然科学基金(50908197

Survey of corporate finance and investor legal protection

近年来,财务学的研究发生了一系列方向性的变化,其中之一是"法律与财务"交叉研究思潮的兴起,简称"Law and Finance".从宏观层面看,其主要研究法与金融发展和经济增长的关系;从微观层面看,其主要研究法,特别是中小投资者法律保护与公司财务的关系.文章从微观层面,系统地回顾投资者法律保护与公司财务的研究现状和发展动态,特别是对投资者法律保护与公司财务研究的八大热点问题进行系统的总结和评述,并讨论当前"法与财务"研究存在的两大问题,最后指出"法与财务"未来研究的三大趋势.Recently,a series of research trends have appeared in finance,one of which is the cross-discipline study on the relationship between law and finance,in short,"Law and Finance".From the macro viewpoint,it deals with the relationship between law and financial development or economic growth;from the micro viewpoint,it is concerned with the relationship between law,especially legal protection of minority shareholders,and corporate finance.This paper surveys current literature and fore casts future developments about legal investor protection and corporate finance.In detail,we summarize and comment eight related hot topics.Then,this paper discusses two key problems in this area.Finally,three future research trends on "Law and Finance" are discussed.国家自然科学基金资助项目(70502007);; 中国博士后科学基金资助项目(20070410025

Wean eyes : experimenting (in) videos/spaces/poetry

Orientador: Wenceslao Machado de Oliveira JuniorDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de EducaçãoResumo: Em nossa pesquisa experimentamos na/com a linguagem audiovisual outras possibilidades de grafar um bairro situado na periferia da cidade de Campinas-SP, a partir de uma oficina de criação de vídeos com jovens moradores daquele lugar. Nesta oficina trazemos a poesia de Manoel de Barros para propor contaminações criativas entre linguagens (escrita/videográfica), nossa aposta é lidar com a imagem para além de sua condição informativa, comunicativa e de ilustração, é, também, uma aposta de deslocamento do pensamento espacial que abrevia o bairro em representações da periferia pelo clichê da falta. Elegemos como teóricos principais: 1) Cristine Mello (A extremidade do vídeo) que nos ajuda a olhar para as extremidades criadoras onde o vídeo toca em diferentes esferas de nossa sociedade; 2) Doreen Massey (Pelo espaço) por pensar o espaço como uma eventualidade engendrada no encontro de trajetórias abertas; 3) Gilles Deleuze e Félix Guattari por desterritorializarem, em várias de suas obras e conceitos, nosso modo de pensar, nos abrindo um novo arranjo de conexõesAbstract: In our research experience in / with the audiovisual language other ways to spell a neighborhood on the outskirts of the city of Campinas - SP , from a workshop creating videos with young residents of that place . In this workshop we bring the poetry of Manoel de Barros to propose creative contaminations between languages ( written / videographic ) , our bet is to deal with the image beyond its informative , communicative and illustration condition , is also a bet displacement of thought space that abbreviate the neighborhood at representations of the periphery by the lack cliché . We selected as leading theorists : 1 ) Cristine Mello ( The extremity of the video) that helps us to look for the creative extremities where the video touch in different spheres of our society , 2) Doreen Massey ( For space) to think of space as a eventuality engendered in meeting open trajectories , 3) Gilles Deleuze and Félix Guattari by desterritorializarem in several of his works and concepts , our way of thinking , opening in a new arrangement of connectionsMestradoEducação, Conhecimento, Linguagem e ArteMestre em Educaçã