Analytical Seismic Assessment of a Tall Long-Span Curved Reinforced-Concrete Bridge. Part II: Structural Response

The seismic assessment of special bridges, even under the hypothesis of full knowledge of site conditions, structural characteristics, and seismic activity at their location, is not an easy and straightforward task due to the complexities and uncertainties related to the finite-element modeling approaches, structural loading scenarios, and seismic analysis methodologies. In this article, a series of nonlinear static and dynamic finite-element analyses on the Mogollon Rim Viaduct are performed with consideration of both uniform and conditionally simulated non-uniform seismic motions. The failure modes of the bridge using different numerical modeling approaches are discussed, and the degree of sensitivity of its response to the different seismic assessment strategies is evaluated. The effect of the multi-component, multi-support and multi-directional excitations of ground motions on the design and response are studied, and the pros and cons of the commonly used structural analysis methodologies of bridges are also addressed. The numerical results of the present study provide a deeper insight into the nonlinear behavior of curved reinforced-concrete bridges, and suggest practice-oriented approaches for their seismic assessment.     

Railway development as Symbolising ideas of social construction: (With Special Reference to Railway Development in Australia)

The townscape of “old” Lerwick reflects its traditional focus on the sea for its economic base. The major elements in this cohesive visual character are the closely clustered houses in the steep hillside district of the Lanes, the narrow, winding principal commercial street, and the lodberries projecting out into the harbour. The latter were constructed to meet the needs of the prosperous expanding trade period of the latter half of the 18th century and first half of the 19th century. Harbour improvements in the final quarter‐century of the 1800s ended their commercial usefulness. After a century of declining use and of neglect they are being restored as part of the renewal of “old town” Lerwick.     

Environmental History within a Revitalized Integrative Research Methodology for Today and Tomorrow

Abstract

In the past decades, historians and scientists worldwide have focused intensively on researching and recording the micro and macro trends of the environmental history of many places with reference to numerous aspects of nature that involve people. Yet no definite methodology, epistemology or even theory has resulted from these research contributions, which were and are being conducted within disciplinary and sometimes interdisciplinary frameworks. The transdisciplinary research approach, at least as practiced by historians, is a ‘newcomer’, although it features familiar criteria. For several reasons, some historians appear to be neither in favour of, nor familiar with, research co-operation with other disciplines, private practitioners or informed community members. There are obstacles to using a research methodology that complements the interdisciplinary or transdisciplinary approach, especially the grey areas of research quality, source validity, methodology and publication value. However, if approached constructively and meaningfully, transdisciplinary research may result in what we could call higher-order research because it is all-inclusive and can provide diverse perspectives on any theme, for example, environmental history. This article discusses the possibility of progressing towards ‘transdisciplinary’ as part of an integrative multidisciplinary approach in research on environmental history. An integrative multidisciplinary (‘triangular’) research model is proposed, especially for use by historians and others who want to approach environmental research from disciplinary, interdisciplinary and transdisciplinary perspectives. It is also hoped that this discussion will stimulate the debate by historians on research co-operation with the social sciences and humanities, as well as collaboration with non-related sciences in environmental history.     

Mapping the past: Turkish Cypriot narratives of time and place in the Canbulat museum,northern Cyprus

The Canbulat museum is located within the Venetian Walls of the mediaeval city of Famagusta in northern Cyprus, and traditionally marks the spot where the Ottoman warrior Canbulat fell during the siege of Famagusta in 1571. The tomb of Canbulat, which is housed within the museum, has for centuries played an important part in the folk tradition of Turkish Cypriots. Its incorporation into a formal museum in 1968 marked a conscious reworking of the Canbulat legend into a narrative of the Turkish presence in Cyprus. This paper explores the relationship between history and memory which emerges from the shared space and diverging practices of shrine and museum and considers the alternative visions of past, present and future which it opens up.     

中国俄国史研究百年检视与思考

中俄交往始于蒙古西征和金帐汗国时代(1238-1480年),中国学人撰写俄国史自1878年刊印的鹭江奇迹人的《俄国志略》,到今天已经有整整140年的历史。中国的俄国史学科伴随民族命运、国家危机以及世界形势的变化而生,自诞生之日起即负有学人情怀、民族重任和学术职责三重使命。因此,俄国史学科在中国一直发挥着“知夷”和“盗火”的两大作用。中华人民共和国成立后,俄国史(包括苏联时期和俄罗斯联邦时期)研究获得了70年的巨大发展,主要成就有:1985年中国苏联东欧史研究会成立(1992年英文更名为中国俄罗斯东欧中亚史研究会),高等院校、社会科学院、党校、国家有关部委及党政机构纷纷设立俄国史或俄罗斯问题研究机构,建立了从历史学学士、俄国史硕士到俄国史博士的三级专业人才培养体系,俄国史和俄罗斯问题研究的专业期刊创立并连续出版,大量的俄国通史、中俄(中苏)关系史、专题著作、各类教科书、翻译著作(来自俄文、英法、法文、德文、波兰文等)出版,中国俄国史学者积极参与国际学术会议和国际合作研究,具有中国特色的中国“俄罗斯学”新学科正在建立过程中。     

唐玉门关地望新探——基于历史文献与考古遗存互证

在实地调查的基础上,根据传世典籍和出土文献的记载,结合年代测定、考古发现和遥感影像资料,通过空间分析,作者认为唐玉门关和墨离军驻地应在河西走廊西段的常乐故城,即今瓜州县“六工古城”遗址。这里是丝绸之路的交通枢纽,是西域出入口的重要关卡,亦即北魏时期新开伊吾道的起首。唐代玉门关地处疏勒河和榆林河下游洪积冲积扇缘的古绿洲,地貌和水资源等地理环境因素是制约关城选址的基础条件,而政治、军事等人文地理因素则是决定玉门关时空变迁的关键。     

王桐龄《中国史》的特点

成书于 2 0世纪 2 0年代的《中国史》是王桐龄的代表作 ,反映了他对中国历史的认识及其研究成果。《中国史》对中国历史有宏观把握 ,内容丰富 ,理论上有系统思考 ,编纂有特点。     

马士及其中国近代对外关系史研究

马士是西方公认的汉学先驱之一。在中国海关任职长达30余年的时间里,撰写了一系列有关中国问题的著作,它们对20世纪前半期西方的中国历史学著作产生了深刻的影响。他的许多有关中国近代对外关系的著作,不仅开启了国外中国近代史研究的先声,为国外中国近代史研究奠定了坚实的基础,而且拓宽了西方汉学的研究领域,对西方现代汉学的发展起了重要的推逐作用。     

评近年来关于知识分子研究的几本史著

学术界近年来关于知识分子问题的研究呈现三大特点：一,“体验中的理解”,利用研究主客体在血脉、情感上的亲密关系,勉力进入先辈生存的精神家园,以理解他们的所思所言所行;二,“建构中的阐释”,力求在某种独特、精致的理论建构中提出假设,表达观点完成叙述;三,“批判中的反思”,通过广义上的学术批判,对古往今来的士之论士、儒之论儒、知识分子之论知识分子的成果进行反思。此外知识分子研究的方法论问题,也值得引起关注。     

自汉至唐海南岛历史地理略说

公元前110年,西汉王朝在海南岛设珠崖、儋耳二郡,标志着海南岛被正式纳入王朝的版图。公元前46年,汉罢珠崖郡,以朱卢都尉属合浦郡。此后的580余年,海南岛或保留县级机构,或以海南岛属合浦郡徐闻县。南北朝时的梁王朝在海南岛设珠崖郡。从此,历代王朝在海南岛又重新恢复郡制。