南方多雨区域石窟寺防渗效果评价研究——以飞来峰造像二期保护工程为例

南方多雨区域石窟寺的防渗加固是石窟造像保护的重要措施。近年来随着国力的增强,一大批文物保护工程已经实施。但是,对于石窟寺加固保护后效果的跟踪研究却较少。全国重点文物保护单位——杭州飞来峰造像原佛龛裂隙渗水较为严重,已对文物造成破坏和威胁。自2005年以来,飞来峰造像区域已完成了两期保护工程,实施了危岩加固、裂隙灌浆、地表防渗等工程措施。跟踪评价工程的防渗效果,对于后续保护工程和类似石窟造像的保护具有重要参考价值。本研究结合工程资料,实地观察测量渗水情况和分析渗出物成分,试探性对飞来峰造像二期保护工程的防渗效果进行定量化评估。该工作可以为南方多雨区域石窟寺防渗工程的效果评估提供借鉴。     

谈《可移动文物病害评估技术规程?瓷器类文物》编制工作

本文介绍了《可移动文物病害评估技术规程瓷器类文物》标准的编制背景、原则、依据、结构、主要内容以及对标准编制工作的思考。本标准的制定是科学评价瓷器类文物病害现状的必要工作,对于更有序地、科学地开展瓷器类文物的管理、保护与修复等具有重要意义。     

基于离散程度的博物馆馆藏环境温湿度中长期评估方法

温湿度是评估博物馆馆藏环境的重要指标。在越来越多的博物馆对温湿度进行监测记录的情况下,需要基于"稳定适宜"的准则,探索一种科学的评估方法,为馆藏环境温湿度的调控治理提供依据。该方法以中长期的博物馆监控数据为基础,通过计算温湿度监控数据的离散度和离散系数,并结合箱线图分析数据的分布情况,对其"稳定适宜"程度进行综合量化评估。结合四川博物院2014年的温湿度监控数据的实例,验证了该方法的有效性。研究结果表明,采用基于离散程度的中长期温湿度数据评估方法,能够为下一步的馆藏环境调控治理提供依据,有助于针对性的改善博物馆文物保存环境。     

水域景观美学价值评价理论研究

水域景观是自然风景的重要组成部分。美学价值是人类审美和水域景观联系的纽带。水域景观美学价值的评价是天然水资源成为景观水资源(旅游资源)的先决条件,美学价值的高低直接影响水域景观的观赏质量,它是水域景观旅游价值评价的重要内容。本文首先根据人类神经生理、心理学等学科的研究成果探讨人类审美的主观缘源;再重点剖析水域景观的美学特征;最后提出水域景观美学价值评价的理论。     

城市住宅小区可持续发展研究

分析了我国住宅小区目前存在的问题,探讨了住宅小区可持续发展的目标体系,并提出实施可持续发展的措施。     

关于旅游资源普查中几点问题的思考--基于大连市旅游资源普查工作的体会

全国旅游资源普查工作还处于尝试性的初期阶段,大连市参与其中并在工作中对〈国标〉有所突破.本文以笔者在大连参加旅游资源普查工作的体会为基础,从理论和实践技术两个层面对工作中遇到的一些问题进行了阐述和分析.理论层面主要是关于〈国标〉中对旅游资源的定义及其所采用的方法论问题的讨论;实践技术层面主要是在对〈国标〉内容、概念、分类、解释及操作方法理解的基础之上,对〈国标〉局部进行更深层次的剖析,并提出一些改进建议.     

Student Perceptions of Geography and Environmental Science Fieldwork in the Light of Restricted Access to the Field,Caused by Foot and Mouth Disease in the UK in 2001

Internationally, fieldwork is generally seen as intrinsic to the very nature of geographical education. However, objective experimentation comparing student learning experiences with and without fieldwork is rare. During 2001 in the UK, fieldwork was withdrawn from many university degree programmes as Foot and Mouth Disease led to restrictions on access to the countryside. This restriction provided an unexpected opportunity to assess student perceptions of fieldwork in the light of its absence and to review those alternative learning strategies which were put in its place (where appropriate). To this end, nominal group technique (NGT) was applied to five groups of students from five separate UK universities to obtain information on the groups' perceptions of the value of fieldwork. NGT elicited almost 300 responses from 33 final-year students representing a high level of group consensus on the issues involved. Rationalisation of responses identified 12 categories, which reflect and amplify key educational objectives addressed by fieldwork in geography and environmental sciences from existing theoretical literature. Results demonstrate that student perception of fieldwork (based on previous university-level field experiences) is overwhelmingly positive. The groups identified the experience of geographical reality, developing subject knowledge, acquiring technical, transferable and holistic skills, and working with peers and lecturers as being the most important perceived benefits of fieldwork. Negative impacts of fieldwork included high levels of time consumption. Using a systematic and objective methodology, these results confirm, in a novel rigorous multi-institutional approach, the conception of geography and environmental science fieldwork as being of significant value for the overall student learning experience.     

基于概率法的木构古建筑地震破坏综合评价方法

为了研究木构古建筑地震破坏状态评估的准确性,应用概率的方法,以结构损伤指数、最大层间位移角作为评价因子,建立了地震破坏综合评价模型,提出了基于概率法的木构古建筑地震破坏综合评价方法。该方法在综合现状分析与实验数据,在一定烈度下计算各种破坏状态等级中每一种破坏状态出现的概率,古建筑地震破坏状态应为概率最大的地震破坏状态,从而比较准确地判别木构古建筑地震破坏程度。并对经受过汶川地震的两种结构形式的古建筑进行了验证,从而验证了该方法的合理性和有效性。这一方法将提高木构古建筑震害预测的准确性,为古建筑抗震加固提供有效的理论支持。     

Seismic Fragility Evaluation of RC Frame Structures Retrofitted with Controlled Concrete Rocking Column and Damping Technique

Acceleration response of simple yielding structure is proportional to its own weight, but it is limited by yield strength. Thus, using rocking columns that reduces global yield strength, a limited acceleration is achieved. However, the displacement becomes large due to lower strength and higher inelasticity, but it can be controlled by adding damping. Performing fragility analyses, the seismic response of R/C frame structures with rocking columns and viscous dampers is investigated. Near field MCEER ground motions are considered. The analyses show that the story accelerations are reduced by using rocking columns, while the story displacements are controlled by using viscous dampers.     

Impact Stiffness of the Contact-Element Models for the Pounding Analysis of Highway Bridges: Experimental Evaluation

For the requirement of pounding analysis of highway bridges, how to properly choose the impact stiffness has become a primary issue for an achieving accurate result. This article presents an evaluation test of the impact stiffness of four types of contact-element models based on the shaking table test results of a steel highway bridge model. The analytical results indicate that the theoretical impact parameters are significantly larger than the identified values because the assumptions for deriving those models cannot match the actual impact conditions. The possible reasons causing those differences are discussed at the end of this study.