Steel structure built to help the city get rid of
Time：[2014-9-30] Hits：6816
In recent years, accelerating urbanization process in China, the development of the construction industry has been driving in the "fast lane" on. However, stole down, strong construction waste was poured event after another. According to statistics, in 2012 the construction of the waste occurred in China reached 1.5 billion tons, it is understood, 10,000 tons of construction waste should be accounted for 2.5 acres of land, according to the 1.5 billion tons of annual production projections, China's annual construction waste will occupy 37.5 acres, The West Lake in Hangzhou, covering about 9,750 acres of the lake. Rough count, only in 2012, China's annual output of construction waste can be landfilled 38 West.
In this regard, Secretary General of China Association of Liu Wanzhong steel construction, said the development of China's construction industry just stay behind in the traditional extensive production methods, the extensive increase in the form of accumulation. Just stepped out of the traditional form of concrete construction behind, vigorously promote "green energy" green steel structure built forms of production, in order to break the "construction waste Fortress Besieged" dilemma from the origin. Foshan Steel
In China, the construction of the concrete construction areas occupy the majority of shares. However, the concrete construction from the construction, transport links to dismantle after each create stacking, removal, recovery of landfill disposal of various aspects, will cause serious pollution of air, water, soil. "Mass production, mass spending, a large number of abandoned" this traditional form of construction has not meet the development needs of today's China, must be changed. As the steel structure of the "first person" at the helm of a single silver Wood, chairman of Zhejiang Hangxiao Inc. says.
Compared with concrete shelter, with steel, metal steel structure as the main raw material of construction, raw materials recovered in the obvious advantages. Data indicate, in the areas of steel structure construction, steel recovery factor can reach 90%, steel and aluminum respectively 50% and 95%.
. "From full life-cycle perspective, the basic structure of the construction of the steel construction waste will not happen," chief engineer Fanghong Jiang Hangxiao introduction, selection of construction steel structure mounted to create a form, as long as the construction work, no pollution; steel structure built from an average of 80 years the life expectancy of construction point of view, even if they are removed, the construction of steel structures but also to a higher recovery rate, completion of steel, steel, construction recovered glass, aluminum, timber and other raw materials, to eliminate "waste build siege" from the origin. Fang Hongjiang further introduction to the construction demolition when, for example, the construction of the main steel structure construction materials recovery rate of over 90%, compared with traditional concrete waste to cut emissions 60 percent.
Although the construction of the steel structure has recycled construction materials, construction waste drop occurs, has a unique advantage in the "energy conservation, low-carbon green" aspects. But because domestic steel construction industry limited knowledge, many people mistakenly think that the steel structure "excessive costs" and other objective factors prevented the construction of the steel structure to implement, especially in large areas of the residence of the delay in the construction of a useful force.
It is understood that, as the domestic industrial green building integrated experts and leaders Hangxiao, after a series of technical innovations and specifications to build, such as Hangxiao independent research of steel beams residence portfolio construction system, has requested national patent 66 authorized 24 . After a modular design and standardization of production, installation of construction, information handling and custom development to meet the decline in labor intensity, reducing construction waste, shorten create cycles, increased use of the area, seismic mitigation, energy conservation and other construction and industrial modernization new construction of industrial requirements.
For construction costs, 方鴻強 to "1 billion real estate project" For example, in the traditional form, the development cycle requires three years, 13 percent annual interest, the total interest cost of the project is about 100 million, according to the profit margin of 10%, three-year duration of the project profit 100 million; while in the new form, the project development cycle requires only 1.5 years, the interest on the basis of the same year, the interest cost of about 050 million, 050 million of interest savings, equivalent to 150 million profit.
A set of data demonstrating a new form will be able to significantly decrease the cost of steel structure residence for future large-scale steel structure built over the commercial domicile replication industry, to implement the feasibility of providing.
