Residential IndustrializationWord下载.docx

1、1. IntroductionThe steel structure has developed the dominant building structures, steel buildings in developed countries showing a wide range of uses and large amount of steel. Steel structure is widely used in high-level, ultra-high-rise buildings, large span and large space buildings, small and m

2、edium-sized industrial, commercial, community, education, health, high-level ultra-high-level civilian residential. Suitable for factory production of components in a large number of residential buildings, residential steel structure, you can design, production, construction, installation integratio

3、n, and change on-site construction as a factory-built. Improve the housing industrialization, commercialization level, and light weight steel structure residential basis of the lowest. It is suitable for soft ground, easy to install, fast construction cycle is short, fast return on investment and co

4、nstruction of sewage environment, good seismic performance, recyclable, economical and environmentally friendly, with good prospects for development in the residential market, known as the twenty green building one of the first century 1-2,8.Figure 1. The steel integrated buildingThe housing industr

5、y is a form of economic activity is around the level of residential construction in the national economy. Housing industry to accelerate the technological development of residential, enrich and improve the residential accessory products, optimize the residential development, operation and management

6、 of a series of economic activities in general. Its steel structure in the form of steel residential building system was a basis for classification of building system, a branch of the building system. The steel structure residential building systems forming later, less study them at home and abroad.

7、 With the further use of steel in the construction sector, steel residential development will enter a more advanced stage, steel residential building system will also become an independent and complete building system, and people pay attention.The steel structure of the housing industry that is a st

8、eel housing for the final product, through thesocialization of large-scale production, steel residential investment, development, design, construction,service and process centralized and unified as a whole form of organization. The steel structure of thehousing industry is the trend; steel residenti

9、al development will bring significant economic benefits toall aspects of steel residential construction 3-4, 9-10.2. Steel construction housing industry developmentFigure 2. Industrialization of residential construction communityForeign housing industry is up development after World War II. National

10、 economies in the recovery period are the housing shortage and the residential capacity low. In the 1950s, some European countries had solved the problem of housing shortage, setting off the climax of industrialization of residential buildings, causing a revolution of the residential construction fi

11、eld. To the 1960s, residential construction, industrialization across Europe, and extended to Japan, USA, France, Canada, Australia and other developed economies. Residential industrialization from quantitative development to quality and improve the transition of the direction of the housing product

12、ion and management, standardization and social emergence, residential modernization begins in earnest. But there are different countries in the housing industry of the historical background, economic status, national policy, the focus of development and achievements.According to reports, the light s

13、teel structure of the fastest growing in the United States, 1965 young steel in the United States accounted for only 5% of the construction market in 1990 rose to 53%. 1993 have risen to 68 percent in 2000, has risen to many civilian houses, villas and resort housing with steel. U.S. residential con

14、struction market develop improved, residential components and parts standardization, serialization, and its specialization, commercialization of the high level of socialization, almost 100% 5. There are kinds of construction machinery, equipment, apparatus, rental of a very developed, and commercial

15、ization of up to 40%. U.S. residential construction is not subject to the impact of World War II, it did not take the European large-scale prefabricated road, but focus on the residential individualized and diversified. U.S. residential construction of more in the suburbs, mainly low-rise light stee

16、l keel structure, in accordance with the samples or their satisfaction with the program design housing. There are residential product catalog on the market, the procurement of materials, components, parts, commissioned by the contractor construction. And which is characterized by standardized, seria

17、lized component parts, mechanization of construction at the site.The result is satisfaction, good quality, high efficiency, and appropriate price.Table 1. China Housing Industrialization BaseNumberHousing Industrialization BaseResidential industry experience1Beijing BeiXin Building MaterialsGroupMai

18、nly engaged in light steel structure system, wall insulationmaterials, such as the housing industry2Tianjin Second ConstructionConcrete filled steel tubular housing industrialization3Hefei Economic Development ZoneConstruction characterized by the application of newtechnologies for the residential d

19、emonstration project4Shenzhen CityThe housing industry Model City5Wenzhou Chint GroupIndustrialization of residential low-voltage electrical equipment6Jinan force NoritSolar energy and building integrated residential industrializationIn China over the past few decades, residential construction techn

20、ology and means have been relatively backward in housing as a commodity production is still relatively extensive, low productivity, long construction period, the grade is not high, the quality is difficult to be guaranteed. In order to meet the needs of economic development and global competition, w

21、e must completely change the traditional mode of production. Change site built manufactured , change wet work jobs by doing to reduce the steel banding, the construction of templates and temporary support tedious and cumbersome process, reduce labor intensity and improve labor productivity, reduce c

22、osts, guarantee quality, shorten the construction period. Meanwhile, the traditional way to produce high-quality residential requires a lot of skilled workers, while the number of skilled workers in China is obviously insufficient in the future this phenomenon will become more serious. Residential i

23、ndustrialization of production, industrialization, the assembly of the way to simplify the production process, to speed up housing construction, and improve the residential grade, quality and technical content, the operation of the technical requirements to reduce dependence on skilled workers will

24、be greatly reduced, which can change from both sides of the modes of production and production labor in China lagging behind the residential construction methods 6-7.Figure 3. Steel structure building system3. Welding simulation of construction processWelded structure is an obvious feature is the la

25、rge welding stress and deformation. Welding production, the vast majority of the welding method using the local heating, so inevitably will produce welding stress and deformation. Welding stress and deformation may not only lead to hot cracking, cold cracking, brittle fracture process defects, and u

26、nder certain conditions will affect the carrying capacity of the structure, such as strength, stiffness and compression stability. Therefore, in the design and construction process take full account of welding stresses and deformation of this characteristic is very important. Model the geometric dim

27、ensions of 100mm 100mm 6mm arc in the middle of steel plate along the linear motion, therefore half of the model calculations take.Figure 4. Welding model diagramTable 2. Steel material propertiesTemperature T（）202505007501000 150017002500coefficient of heat conductivity （W/m ）50474027303545Density （Kg/m3）78207700761075507490