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1.
文章首先论述了土建施工技术的重要性,然后分析了建筑工程土建施工技术要点,包括深基坑施工技术要点、钢筋施工技术要点、砖砌筑施工技术要点、混凝土施工技术要点、模板施工技术要点。  相似文献   

2.
介绍了建筑电气安装施工的技术要求,并分析了电线管敷设施工技术、电气设备及材料技术、电缆及母线的安装施工技术、配电箱盒施工技术、防雷接地施工技术、防火以及灭火施工技术等主要施工技术,分析了施工过程中施工阶段的质量控制、主体施工的质量控制及装修阶段的质量控制三方面的技术监控问题。  相似文献   

3.
作为土木工程施工企业的技术和管理人员应该在加强土木工程施工技术分析的前提下,加强对土木工程施工传统技术的运用,提高对土木工程施工新型技术的推广,更好地实现土木工程施工技术指导实践、丰富理论的作用.本文在分析土木工程施工技术的特点基础上,对传统土木工程施工技术的运行进行了阐述,指出了土木工程施工新型技术运用的要点,对土木工程施工技术进行了技术上的分析和总结,做出了土木工程施工技术发展上的展望.  相似文献   

4.
绿色施工技术是绿色施工顺利进行的重要保障,要实现绿色施工,就必须进行了绿色施工技术管理。在分析了绿色施工技术管理与传统的施工技术管理的差异的基础上,提出了绿色施工技术管理的措施,阐述了绿色施工技术管理的重要意义,并对提升绿色施工管理水平提出了合理的建议,为企业实现可持续发展打下坚实基础。  相似文献   

5.
介绍了当前建筑外墙装饰施工中比较常用的技术手段,如外墙基层处理技术、抹灰施工技术、涂饰施工技术、门窗施工技术、外保温施工技术、玻璃幕墙施工技术、饰面砖施工技术等,探讨了建筑外墙装饰施工中需要注意的一些问题,从而为类似工程提供借鉴。  相似文献   

6.
本文对风景园林施工中的技术以及技术问题进行了分析,并提出了一系列有助于强化风景园林工程施工技术的措施。本文认为,风景园林工程的施工技术包含了基本的建筑工程施工技术,还包括园林绿化施工技术,复杂的施工技术应用造成了施工中各种问题,而这些问题需要施工企业对参与施工的员工进行相应培训以及采取合适的施工管理措施加以解决。  相似文献   

7.
针对高速公路桥梁高墩施工技术进行研究,介绍了高速公路桥梁工程高墩施工技术现状,对某高速公路桥梁工程中的高墩施工技术进行了调查,提出根据工程实际进行施工技术选择的必要性,主要是结合案例分析阐述滑模施工技术、翻板施工技术、钢筋工程技术和混凝土施工技术。  相似文献   

8.
文章主要阐述了建筑工程施工绿色施工技术的重要意义,分析了建筑工程施工绿色施工技术的作用,同时探讨了建筑工程施工绿色施工技术的具体应用。  相似文献   

9.
文章首先对景观建筑中土建施工技术进行了分析,同时阐述了新时期景观建筑施工中的关键技术,包括混凝土施工技术、钢筋施工技术以及砖砌筑施工技术等。最后对土建施工技术的发展进行了阐述,旨在促进土建施工技术的发展。  相似文献   

10.
介绍了建筑工程土建施工中桩基础技术的应用要点,从施工准备、灌注桩施工技术、预制桩施工技术三方面,阐述了桩基础施工技术的具体应用,并对建筑工程土建施工中桩基础施工的管理措施进行了总结。  相似文献   

11.
Summer and winter discomfort in terms of heat and cold stresses in the nine major architectural climate zones and sub-zones across China in the 21st century were investigated using predictions from general circulation models for the low and medium emissions scenarios. For the six severe cold and cold climate zones in the north, reductions in cumulative cold stress outweighed the increase in cumulative heat stress resulting in an overall decreasing trend in the annual cumulative stress, and vice versa for the other three warmer climate zones in the south. Compared with the 20th century, significant reduction in the cumulative cold stress was observed across the six zones in severe cold and cold climates, ranging from 15.8 in cold-III to 42.3 in severe cold-II. There were modest increases in the cumulative heat stress from 0.3 in cold-II to 12.3 in cold-III. For the warmer climates in the south, reduction in cumulative cold stress ranged from 7.6 in hot summer and warm winter (HSWW) to 10.3 in hot summer and cold winter, while cumulative heat stress increased from 9.9 in the mild zone to 30.6 in HSWW. A reduction in cold stress would result in less winter heating and an increase in heat stress more cooling requirement.  相似文献   

12.
Small scale miners use mercury to extract gold from ore in many countries. An environmental and health assessment was performed in Indonesia in two regions, Galangan in Central Kalimantan and Talawaan in Northern Sulawesi. The environmental assessment showed severe mercury contamination of the sediments, and increased mercury levels in local fish. For the health investigation 281 volunteers were recruited and examined by a standardized questionnaire, a neurological examination and neuro-psychological tests. A medical score was used consisting of significant factors of mercury intoxication. Mercury exposed workers showed typical symptoms of mercury intoxication, such as movement disorders (ataxia, tremor, dysdiadochokinesia, etc.). Blood, urine and hair samples were taken from any participant and analyzed for mercury. The mercury concentration in the biomonitors was high, partly extreme high in the working population, increased in the population living in the same habitat and low in the control group. By a standard protocol which includes a combination of threshold values of mercury in the biomonitors and a medical sum score the diagnosis of chronic mercury intoxication was made for highly burdened workers (amalgam smelters) in 55% in Sulawesi and in 62% in Kalimantan. Less exposed mineral processors and the general population in the mining areas were also intoxicated to a high percentage.  相似文献   

13.
Mercury (Hg) contamination in tundra region has raised substantial concerns, especially since the first report of atmospheric mercury depletion events (AMDEs) in the Polar Regions. During the past decade, steady progress has been made in the research of Hg cycling in the Polar Regions. This has generated a unique opportunity to survey the whole Arctic in respect to Hg issue and to find out new discoveries. However, there are still considerable knowledge gaps and debates on the fate of Hg in the Arctic and Antarctica, especially regarding the importance and significance of AMDEs vs. net Hg loadings and other processes that burden Hg in the Arctic. Some studies argued that climate warming since the last century has exerted profound effects on the limnology of High Arctic lakes, including substantial increases in autochthonous primary productivity which increased in sedimentary Hg, whereas some others pointed out the importance of the formation and postdeposition crystallographic history of the snow and ice crystals in determining the fate and concentration of mercury in the cryosphere in addition to AMDEs. Is mercury re-emitted back to the atmosphere after AMDEs? Is Hg methylation effective in the Arctic tundra? Where the sources of MeHg are? What is its fate? Is this stimulated by human made? This paper presents a critical review about the fate of Hg in the Arctic tundra, such as pathways and process of Hg delivery into the Arctic ecosystem; Hg concentrations in freshwater and marine ecosystems; Hg concentrations in terrestrial biota; trophic transfer of Hg and bioaccumulation of Hg through food chain. This critical review of mercury fates and contamination in the Arctic tundra ecosystem is assessing the impacts and potential risks of Hg contamination on the health of Arctic people and the global northern environment by highlighting and “perspectiving” the various mercury processes and concentrations found in the Arctic tundra.  相似文献   

14.
Development and applications of trenchless technology in China   总被引:1,自引:0,他引:1  
Trenchless technology has developed for almost 10 years in China since the first symposium on trenchless technology was held in Beijing (Peking) in 1996 and the China Society for Trenchless Technology-CSTT was established in 1998. Driven by the dramatically increased demand for underground pipeline installation throughout the nation, China has made significant progress in research and development in trenchless technology in the past 10 years. For example, there are more than 200 contractors engaged in trenchless construction, using more than 2000 horizontal directional drilling machines, among which approximately 700 have been introduced in the last year, and the biggest HDD rig in the world is now in China. In addition, China has made many achievements in education, research, and new products development and has accomplished many challenging projects in terms of complexity, diameter and distance in this field. There is a huge market potential for trenchless technology in mainland China.This paper presents the latest research, education, training, marketing and technical status of trenchless technology in China, and discusses the potential market, trends and factors that will influence trenchless technology in the next decade in China.  相似文献   

15.
杜诚 《建筑与环境》2010,(1):170-174
随着国内中西建筑文化交流研究的拓展与深化,近代西方基督教会在华营建活动及其建筑渐为学术界所关注。通过对近代中国以及西方教会宗主国—英国(为例)同期教堂建筑样式进行对比,阐释近代中西建筑文化交融中错综复杂的建筑现象,揭示近代教堂建筑发展的特征、规律。  相似文献   

16.
Field survey of pollutants in various environmental media is indispensable for modeling the behavior of organic compounds discharged into the coastal environment. In this study, the concentrations of chlorobenzenes were measured in Ise Bay where industrial wastewater enters. Some chlorobenzene congeners, 1, 3-dichlorobenzene and 1, 2, 4-trichlorobenzene, were detected in seawater, suspended particulate and bottom sediment samples and their behavior was analyzed.The horizontal distributions showed that these chlorobenzene concentrations in the surface water and sediments were higher in the area near the shore of the industrial area than in the offshore area. The soluble chlorobenzene concentrations in the bottom water were low at all stations. The vertical distribution survey at each sampling site showed that the soluble concentrations were high in the surface water and low in the bottom water, but that those in the suspended particulates and the bottom sediments (dry solid base) had relatively similar concentrations. This indicated that chlorobenzenes in the bottom suspended particulates and in the bottom sediments were not equilibrated with chlorobenzenes in the bottom seawater. This could be explained by the following chlorobenzene behavior: the chlorobenzenes were adsorbed by suspended particulates in the surface water and settled to the bottom swiftly through less polluted seawater in the lower water layer with little desorption. This caused the chlorobenzene concentration gradient in the bottom sediment which reflected the chlorobenzene concentration absorbed by suspended particulates in the surface water.The behavior of chlorobenzenes suggested in this study showed that the use of chemical fate models based on the assumption that the soluble fraction and the fraction adsorbed by suspended particulates are always in equilibrium may yield misleading results.  相似文献   

17.
Religion has been thriving in the Socialist Republic of Vietnam since ??i m?i, the onset of market reforms in the late 1980s. Votive paper offerings, part of spiritual and economic well-being, play a crucial role in performing religious practices in the socialist country as well as among diasporic Vietnamese. In urban Hanoi, material objects made from paper are traded in marketplaces and later burned in the streets, in temples and pagodas, in private yards and other places on special occasions in order to be transmitted to the ancestors. In the past few years, the range of votive paper offerings produced, traded, and sent to the deceased has expanded to include new forms and references to new media. Drawing on recent debates in the role of media in religion and in particular on technologies of mediation, I focus on the use of votive paper offerings in the sociocultural context of the Vietnamese spirit world. I explore how new media and media technologies are embedded in multilayered processes of mediation in Vietnam and its diasporas. Taking religious practices of burning votive paper offerings as an ethnographic example, this essay aims to contribute to ongoing debates on popular religion and the sacred life of material goods in late socialist Vietnam, on its transnational ties, and on the entanglements between religion, media and materiality.  相似文献   

18.
中国房地产业与金融业的结合越来越紧密,如何在中国发展REITs也备受关注。本文将对在中国发展REITs的负债政策进行研究。通过参考美国多年来REITs的负债水平及亚洲各国家和地区的负债政策,对中国在发展REITs起步阶段进行负债限制的必要性及合理的杠杆上限展开详细的实证研究。  相似文献   

19.
The article investigates planning education programmes and attempts to re-orient them in the context of both an international ‘problematique’ in reforming planning education, and European Union directives about the creation of a common European space in higher education. First, the article reviews the international trends in changes and challenges in planning and planning education in the 21st century and proposes an ‘integration model’ of planning education programmes in a European and international context. Second, the article focuses on the development of planning studies in Greece. It presents their history and development as well as the institutional framework in which planning and planning education operate. It then analyses the Greek educational curricula in two ways: (1) a quantitative analysis classifying courses into different thematic areas and thereby, revealing the basic structure of the curricula; and (2) a qualitative analysis based on interviews with academic staff in charge of educational curricula and examining the content of courses, the adopted pedagogies and possible restrictions (e.g. human capital, institutional framework, etc.) in introducing effective planning curricula. Finally, the article proposes guidelines for re-orienting educational curricula in Greek schools of planning and draws out wider implications for planning studies in the wider European and international context.  相似文献   

20.
Stress during development may cause fluctuating asymmetry (FA), i.e. non-directional and random deviations from perfect symmetry in otherwise symmetrical morphological traits. These deviations affect the phenotypic quality of an individual. We manipulated the diet of nestling great tits, Parus major, to investigate how food quality and quantity affect FA in the length and mass of the outermost tail feathers of great tit nestlings in a polluted and an unpolluted area. High carotenoid diet groups and the control group had higher FA in tail feather length compared to a mealworm-supplemented (low carotenoid) group. This suggests that high carotenoid content in the diet may either directly or indirectly induce higher FA in tail feather length. Calcium is an essential element for birds and important component of feathers. The less calcium there was in the diet, the higher was the FA in tail feather length, which suggests that calcium availability may be an important determinant of the developmental stability of tail feather length. In the control group, in which nestlings were fully dependent upon natural food resources provided by their parents, FA in feather mass was higher in polluted than in unpolluted sites. Diet quality and quantity seemed to differentially affect FA in tail feather length and mass between the polluted and the unpolluted areas. FA in tail feather length in the control group was unaltered by pollution, while FA in tail feather mass was lower in the control group in the unpolluted than in the polluted area. Our study also demonstrates for the first time that the developmental stability of tail feather length and mass are affected by different factors.  相似文献   

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