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1、外文资料(英文)steel system because of their own with the light weight, high strength, the construction of such advantages, and the reinforced concrete structure, the more high, light, the development of three unique advantages. along with the countrys economic construction, the long concrete and masonry s
2、tructure dominate the market situation is changing. steel products in the large-span space structure, lightweight steel gantry structure, multi-storey and high-rise residential areas of increasing construction, application areas are expanding. from the west-east gas sent, the west-east power transmi
3、ssion and-north water diversion project, the qinghai-tibet railway, the 2008 olympic venues and facilities, residential steel, development of the western region construction practice, the development of a steel construction industry and the market momentum is emerging in our country. 1: the steel ma
4、rket development trend of the past 20 years of reform and opening up and economic development, steel has to create a system of highly favorable environment for development. (1) from the development of the main steel material foundation : steel is the development of steel a key factor in development.
5、 to meet the needs of the construction market, steel varieties will toward complete standardization of materials direction. domestic steel for construction steel, in terms of quantity, variety and quality have developed rapidly and hot-rolled h-beam, a color plate, cold steel production increased si
6、gnificantly, the development of steel to create important conditions. other steel-steel, coated steel plate and there has been a marked growth, product quality has been greatly improved. refractory, weathering steel, hot-rolled thin number of h-beam steel has started a new project in the application
7、, steel to create the conditions for development. (2) from design, production, construction, professional level look : steel industry after years of development, steel professional design quality in the practice of continually improving. a number of characteristics with the strength of professional
8、institutes, research and design institutes continuously developed steel design software and new technologies. currently, many domestic steel design software have been brought forth, they can adapt to light steel structure, the network structure, high-rise steel structures, thin arched structure desi
9、gn needs. with computer technology in the engineering design of the universal application of steel structure design of the software is getting more sophisticated, to help designers complete structural analysis and design, construction mapping provides a great convenience. steel manufacturers in the
10、country blossom everywhere, and creating a number of strong leading enterprises. annual output reaching 10 - 20 million tons of size alone, more than 10 enterprises that the large domestic steel project mission, they fully equipped with the industry and international enterprises to compete on equal
11、strength. at present, some foreign investment, joint ventures, private sector steel manufacturing enterprises in the fierce market competition winners. from the computer design, mapping, digital control, automated processing and manufacturing industries are in the lead, its products range from the t
12、raditional building structures, machinery and equipment, non-standard components, and turnkey facilities to the value of housing, container products, port facilities directly to the end-user products. steel industrialized mass production, the installation of a new steel structure engineering endless
13、, and energy-efficient, waterproof, insulating, , and other advanced product set and integrated suite of applications, design and construction of integrated production will be raised the level of the construction industry. (3) the steel works from the view of the performance : the worlds third 421-m
14、eter high shanghai jinmao tower, is a leading international standard. height of 279 meters in shenzhen seg buildings, the span of 1,490 meters runyang yangtze river bridge, span of 550 meters of the lupu bridge, the 345-meter-high transmission tower across the yangtze river, and the capital internat
15、ional airport, nest national sports center, many of steel construction system of the important projects, steel buildings positive marks top heavy and large-span steel structure of space development. (4) from the domestic steel industry view : china has steel in housing construction light on the appl
16、ication of the industry as a revolution. with domestic industry to become chinas new economic development and growth, lightweight steel residential housing industry will be the development of the country. and the housing industry is the prerequisite for dealing with the industrialization of matching
17、 new technologies, new materials and new systems. as the steel structure system easy to realize industrialization and standardization of production, and to go along with the wall material can be used in energy conservation, environmental protection of new materials. therefore, the study of steel str
18、uctures for residential package technology will greatly promote domestic industrys rapid development. (5) from the government sector can guide and support : government departments guidance and support, so that as a green steel products and development workers. steel with the traditional concrete str
19、ucture, compared with light weight, high strength, good seismic performance advantages. suitable for live load accounted for a smaller proportion of the total load of the structure, and is more suitable for large-span space structure, tall structures and is suitable for the construction of the soft
20、ground. is also in line with environmental protection and conservation, intensive use of resources policy, the overall economic benefits to investors increasingly are recognized objective will be to promote the designers and developers they chose steel. 2: the steel market outlook of the development
21、 trend of steel, china steel development has tremendous market potential and prospects for development. (1) since china began in 1996 steel output of over 100 million tons, ranking first in the world. 1998 commissioning of a series of rolling h-beam steel to create a sound material basis. steel and
22、other materials industries, the development of the steel industry to provide good quality, complete specifications for the material. according to the market demand, the next batch of 23 will be color plate production line, hot-rolled h-beam will also be an increase in production lines, large cold-fo
23、rmed unit will soon be launched. by that time china will produce more than 100 color plates million tons, hot h-beam more than 100 million tons of cold and the large and medium-sized rectangular pipe and tube, in addition to the existing h-beam welding, plate, sheet steel and other construction, the
24、 steel industry can meet development needs. with steel production and quality continues to rise, their prices are gradually declining. steel has been a corresponding cost of a more substantial reduction. and the steel structure supporting the use of thermal insulation, corrosion-resistant materials,
25、 fire resistant paint, various welding material and bolts, connectivity products and the technology of new materials will also continue to enhance innovation. (2) efficient and new welding technology of welding and cutting equipment and welding application development and application of materials, f
26、or the development of steel works to create a good technical condition. in ordinary steel, thin light steel structures, steel structures in tall buildings, the door frame of light steel structure, network structure, pressure plate structure, welding and the connecting bolt, steel concrete composite
27、floor. cfst steel reinforced concrete structure and the structure of the design, construction, statutes regulating acceptance of industry standards and has more than 20 of this issue. the steel structure norms, in order to constantly improve the system of steel lay the necessary technical foundation
28、 and basis. (3) at present, the portal frame light steel structure and pressure plate arch shell structure of cost per unit area, similar single-storey steel and concrete structure approximately the same, or even lower; and light steel structure of the higher levels of commercialization, production
29、and installation rate will reach each class 700 - 1000 square meters, much faster than the reinforced concrete structure. in recent years, expansion of the market quickly. tall steel structure of the composite price is higher than the reinforced concrete structure similar 4% - 5%, but the seismic pe
30、rformance and construction is fast, especially in high-rise buildings to be used. in november 1997 the ministry of construction issued the china building technology policy, made clear that development of steel construction, construction steel and construction steel construction technology specific r
31、equirements, chinas long-term practice of reasonable steel policy to encourage steel policy. steel will promote the popularization and application play a positive role. (4)the steel industry will see a number of characteristics with the strength of the professional design institutes, research instit
32、utes, output over 200,000 tons of large-scale steel factories, dozens of first-class technology and advanced equipment to the construction and installation enterprises。after 10% of the time, the steel industry output will be 400 - 500 million yuan to 150 billion yuan. ( 5) which restricts the develo
33、pment of the steel industry some unfavorable factors steel output year after year ranks first in the world the steel construction building basic conditions mature, but the technology has not been steel powerful special promotion, chinas steel construction is relatively lagging behind some foreign co
34、untries. main features : homemade h-beam, square steel tubes, lap ramps curling steel cold-z, better corrosion resistance, such as the hot plate profile species, still can not meet specifications of the construction needs. plate can be welded to the poor domestic construction steel is the main probl
35、em. building high-strength low-alloy steel varieties was too small, high-strength low-alloy structural steel in cold-formed steel in the application has not yet been settled. steel and the cost of residential choice, the development of external plate, certain extent constraining the steel constructi
36、on of the residential area of application. although there are various disadvantages or to be improved, but the steel structure of the huge development potential and broad prospects. looking ahead, with the flourishing economic development and to further expand the exchanges to build more high-rise b
37、uildings, bridges and major public places such as large space and a large space structures demand is very strong. this steel will provide more development opportunities and steel industries thrive in a new situation on the eyes 钢结构的应用前景钢结构体系因其本身所具有的自重轻、强度高、 施工快等优点, 与钢筋混凝土结构相比,更具有在 高、大、轻 三个方面发展的独特优势。
38、随着国家经济建设的发展,长期以来混凝土和砌体结构一统天下的局面正在发生变化。钢结构产品在大跨度空间结构、轻钢门式结构、多层及小高层住宅领域的建筑日益增多,应用领域不断扩大。从西气东送、西电东输、南水北调、青藏铁路、年奥运会场馆设施、钢结构住宅、西部大开发等建设实践来看,一个发展建筑钢结构行业和市场的势头正在我国出现。一、钢结构市场的发展趋势二十年来的改革开放和经济发展,已经为钢结构体系的应用创造了极为有利的发展环境。、从发展钢结构的主要物质基础看:钢材的发展是钢结构发展的关键因素。为适应建筑市场的需要,成品钢材将朝着品种齐全材料标准化方向发展。国产建筑钢结构用钢在数量、品种和质量上发展都很快,
39、热轧型钢、彩色钢板、冷弯型钢的生产能力大大提高,为钢结构发展创造了重要的条件。其他钢结构中型钢、及涂镀层钢板都有明显增长,产品质量有较大提高。耐火、耐候钢、超薄热轧型钢等一批新型钢已开始在工程中应用,为钢结构发展创造了条件。、从设计、生产、施工专业化水平看:钢结构行业经过几年的发展,专业钢结构设计人员的素质在实践中得到不断提高。一批有特色有实力的专业研究所、设计院不断研究和开发出钢结构设计软件和新技术。目前,国内许多钢结构设计软件相继问世,可分别适应轻钢结构、网架结构、高层钢结构、薄壁拱形结构的设计需要。随着计算机技术在工程设计中的普遍应用,钢结构设计软件功能的日臻完善,为协助设计人员完成结构
40、分析设计、施工图绘制提供了极大的便利。钢结构制造企业在全国遍地开花,造就了一批有实力的龙头企业。年产量达到- 万吨规模的就有余家企业,承担了国内大型钢结构工程任务,他们完全具备与国际同行业企业间进行公平竞争的实力。目前一批外资、合资、民营的钢机构制造企业已在激烈的市场竞争中脱颖而出。从计算机设计、 制图、数字控制、 自动化加工制造都处于行业领先水平,其产品的范围也从传统的建筑工程结构、机械装备、非标准构件、成套设施到商品房屋、集装箱产品、港口设施等直接到用户的终端产品。钢结构的工业化大批量生产,钢结构的安装新工法层出不穷,以及节能、防水、隔热、等先进成品集合与一体成套应用,设计、生产施工一体化
41、必将提高建筑产业化水平。、从钢结构工程业绩来看:世界第三高度米的上海金茂大厦,具有国际领先水平、 高度米的深圳赛格大厦,跨度米的润扬长江大桥,跨度米的上海卢浦大桥,米高的跨长江输电铁塔,以及首都国际机场,鸟巢国家体育中心等等许多采用钢结构建筑体系的重要工程,标志着建筑钢结构正向高层重型和空间大跨度钢结构发展。、从住宅钢结构的产业化来看:我国已把轻钢结构在住宅建设上的推广应用作为建筑业的一场革命。随着住宅业成为我国经济发展新的增长点,轻钢住宅将是住宅产业发展的必由之路。而住宅产业化的前提是具备与产业化相配套的新技术、新材料和新体系。由于钢结构体系易于实现工业化生产、标准化制作,且与之相配套的墙体材料可以采用节能、环保的新型材料。因此,研究钢结构体系住宅成套技术,将大大促进住宅产业化的快速发展。、从政府部门的引导和支持看:政府部门的引导和支持,使钢结构作为绿色环保产品得到工人和发展。钢结构与传统的混凝土结构相比较,具有自重轻、强度高、抗震性能好等优点。适合于活荷载占总荷载比例较小的结构,更适合与大跨度空间结构、高耸构筑物并适合在软土地基上建造。也符合环境保护与节约、集约利用资源的国策,其综
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