Effect of salt crystallization on stones of historical buildings and monuments,Konya, Central Turkey

In this study, we investigated the chemical and physical properties of the volcanic rocks used as building stones in historical places and monuments. The chemical weathering effect of salt crystallization on these stones was measured on the laboratory conditions (in most cases, used samples were very small). For this purpose, the dry weight loss (DWL) test was conducted. The rocks of dacite, andesite and tuffs of volcanic origin have different durability against salt crystallization. The most stable rocks are dacites (DWL 2.06%) which were used in the construction of Hittite monuments at Eflatun. The durability of the stones is closely related to their chemical, mineralogical, petrographical and mechanical properties. The stones used in the historical buildings are generally much more stable than present-day building stones.     

Comparative study of dark patinas on granitic outcrops and buildings

Formation of dark patinas on rocky surfaces is mainly related to the deposition of gases and particles and to sulphation mechanisms. In the present study, samples of dark patinas taken from granitic outcrops and from granitic buildings were examined in an attempt to understand the mechanisms of their formation. The outcrops are located in non-polluted areas and are characterized by the absence of any extraneous material that provides calcium, such as e.g. mortar. The buildings are located in areas with low levels of pollution. The climate in the study area favours proliferation of microorganisms. Important differences between the patinas sampled from outcrops and from buildings were observed, as the former are of biological origin and the latter of anthropogenic origin. Although the levels of pollution are low in the sampling area, sulphur was present in all of the samples from urban buildings. Sulphur was not present in patinas from outcrops or in patinas from monuments that are assumed to behave as outcrops (dolmens), although the latter are also of anthropogenic origin. Finally, the patinas were found to be formed by elements accumulated on the surface and not from elements contained within the rock itself.     

木结构古建筑的抗震性能分析

介绍了我国木结构古建筑的主要结构形式及构造特征,主要从建筑材料、建筑布局、结构选型以及结构构造等方面,对传统建筑结构的抗震优越性进行了分析和评价,以期指导当代结构设计人员继承和发扬传统建筑的抗震技巧。     

旅游开发对古建筑消防安全的影响

利用古建筑开发旅游对消防安全来说是一把双刃剑 ,既带来积极的影响 ,也会产生消极的后果。文章以山西省为例 ,对古建筑旅游开发带给消防安全的利弊进行了探讨 ,并提出了一些在开发旅游的同时 ,加强保护古建筑消防安全的建议     

浅析浙南地区历史建筑的特点及价值

通过实地走访调研衢州相关古建筑,了解衢州现存古民居建筑的现状,分析明清时期衢州古民居建筑的特点、结构形式、材料形式和艺术形式,初步制定衢州市历史建筑评价标准。根据实际情况,参考并比较了多种资料后确定了历史文化价值、艺术价值、科学价值和使用价值作为评价衢州历史建筑的主要价值要素。     

论历史建筑中背景建筑的再生

在当代历史建筑保护的框架下,分析历史建筑和背景建筑的定义,提出历史建筑中背景建筑的概念,对比传统建筑保护思路,采用当代城市背景建筑的设计方法,从城市角度讨论历史建筑中背景建筑再生。     

Effects of urbanization on historical heritage buildings in Kumbakonam,Tamilnadu, India

Urbanization is a common and inevitable occurrence everywhere. While growth and expansion are beneficial for manypeople and businesses, there is apotential for loss of historical areas that are the heritage value to people. This paper investigates the effects of urbanization on the heritage buildings in the historical-heritage temple town of Kumbakonam in Tamilnadu, India. Heritage temple towns are frequent targets for the rapid transition to urbanization that is often accompanied by alteration of historical areas. The primary objective of this study was to identify how urbanization could change the heritage characteristics in a temple town. An ordinal regression model was used to analyze urbanization data from the heritage town of Kumbakonam. Our findings revealed specific physical, socioeconomic, and sociocultural factors of urbanization that caused identifiable and significant changes in the heritage characteristics of Kumbakonam. These factors play a significant role and wouldaid in the implementation of the Local Development Plan (LDP) for sustainable urban growth and preservation of the heritage character of Kumbakonam.     

古建筑消防保护之探讨

在分析古建筑火灾危险性的基础上 ,针对不同的隐患采取相应的整改方式 ,通过不断的完善技术措施和管理制度逐步提高古建筑抗御火灾的能力。特别是要注意发挥基层公安派出所和居民委员会、村民委员会的作用 ,作为公安消防力量不足的有效补充。     

基于UGIS的历史建筑保护与更新研究

提出了应用UGIS进行历史建筑保护与更新研究的背景和意义,阐述了国内外同类研究开发概况,探讨了研究内容、创新点及技术指标,并明确了研究开发方案和阶段目标。     

浅谈古建筑中灭火器的配置与维护管理

根据古建筑的火灾特点 ,结合多年防火工作实践 ,分析了古建筑中灭火器的配置与维护管理 ,并提出了一些应该注意的问题。     

Seismic rehabilitation of historical masonry buildings

Masonry buildings frequently present unsatisfactory behavior under seismic activity, due to the poor resistance of the masonry walls to tensile stresses and to the presence of flexible wooden floors. This paper presents a comparative study of the performance of different seismic retrofitting techniques, implemented in a model of an existing masonry building. The first part of the study considers the testing of different methodologies to strengthen the building floors, to enable them to behave as stiff diaphragms. In the second stage, the seismic protection of the building is studied with these different solutions: insertion of concrete walls, the use of a base isolation solution, and the implementation of viscous dampers. A particular analysis is made on the use of viscous dampers since it improves the seismic behavior with little interference.     

历史建筑结构加固方法探究与工程实践

阐述了历史建筑特点及我国历史建筑保护工作现状,以具体历史建筑加固工程为例,结合历史建筑结构特点和修缮原则,基于结构状态和各主要受力构件特点,介绍了不同结构构件的加固方法,并给出了其施工方法要点,总结了一套工艺成熟且适用范围较广的结构加固方法,为类似加固工程提供参考.     

高层建筑应急管理的源流与重塑

高层建筑安全风险是社会应急管理的重要影响因素,实践中普遍存在应急防范失灵、介入被动、效果不佳等问题。本文在分析其安全意义基础上,以实地调研、文献检索、内容分析等方法梳理不同类型、周期、系统视角下高层建筑的安全风险,追溯高层建筑应急管理研究传统、逻辑及趋势,提出复杂风险下高层建筑应急管理需处理的关系,分析了风险认知片面、研究结构失衡、理论基础侧移、关注重心后置等弊病。     

Prediction of elastic and acoustic behaviors of calcarenite used for construction of historical monuments of Rabat,Morocco

Natural materials (e.g. rocks and soils) are porous media, whose microstructures present a wide diversity. They generally consist of a heterogeneous solid phase and a porous phase which may be fully or partially saturated with one or more fluids. The prediction of elastic and acoustic properties of porous materials is very important in many fields, such as physics of rocks, reservoir geophysics, civil engineering, construction field and study of the behavior of historical monuments. The aim of this work is to predict the elastic and acoustic behaviors of isotropic porous materials of a solid matrix containing dry, saturated and partially saturated spherical pores. For this, a homogenization technique based on the Mori–Tanaka model is presented to connect the elastic and acoustic properties to porosity and degree of water saturation. Non-destructive ultrasonic technique is used to determine the elastic properties from measurements of P-wave velocities. The results obtained show the influence of porosity and degree of water saturation on the effective properties. The various predictions of Mori–Tanaka model are then compared with experimental results for the elastic and acoustic properties of calcarenite.     

谈古建筑的火灾隐患及防火灭火对策

古建筑是国家重要的历史文化遗产 ,是国家文明的重要标志。从对山西省文物古建筑的现状分析为切入点 ,简述了如何正视古建筑存在的火灾隐患 ,分析了古建筑的火灾特点并提出了一些防火、灭火对策。     

我国文物建筑消防保护的法律思考

从法律的角度 ,对我国文物建筑的消防安全进行了探讨 ,以期引起学界的关注 ,达到加大立法力度 ,共同保护文物建筑消防安全的目的。     

对文物古建筑消防保护资金匮乏及对策的思考

文物古建筑的保护,是一项系统而又复杂的工程。而文物古建筑长期得不到有效保护的根本问题就是资金匮乏。要切实解决这个问题,需紧紧依靠当地政府,加大投入,充分发挥各个职能部门的作用,全面吸引个人投资,拓宽保护资金的来源渠道,开辟出一条政府领导、齐抓共管、专群结合、群防群治的文物保护之路     

古建筑消防安全特性及防火对策探讨

针对古建筑特有的历史、文化、科学价值和消防安全特性 ,立足古建筑整体人文价值和科学管理理念 ,从诸多视角加以分析和探索 ,结合现代消防安全的科技手段 ,探讨新形势下古建筑防火的措施和对策。     

古建筑火灾无线监测网络的研究

针对古建筑特点,采用无线通信方式进行火灾实时监测.分析了无线传感器网络(Wireless Sensor Network,WSN)的体系结构,以及无线监测网络中数据传输的技术问题.提出了一种基于无线传感器网络的古建筑火灾监测系统,给出了基于GAINZ节点的火灾多参数监测方法.     

古建筑消防安全对策研究

就部分古建筑发生的火灾情况 ,分析古建筑的火灾危险性 ,提出应采取的消防安全对策和措施。