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建筑用钢占总钢用量的比重

发布时间:2015-9-11 9:20:11 浏览次数:506
近数十年来,前苏联、美国、日本三个国家一直是世界上钢产量居前三位的国家,其钢产量轮流位居世界第一位。因此,这几个国家的建筑钢结构建设事业蓬勃发展。而在同一时期,我国在这方面的发展则比较缓慢,水平也相对落后。近几年来,随着我国改革开放政策的实行和推进,我国的经济建设工作取得了突飞猛进的进展。在此期间,我国的钢产量一跃成为世界第一位。1996年,我国钢产量首次突破亿吨大关;1998年我国钢产量已达11434万t,而且每年增产300万t.钢产量的增长为发展我国建筑钢结构建设事业创造了极好的时机。但目前,我国与发达国家相比在许多方面还存在着明显的差距,因此,为了推动我国建筑钢结构的进一步发展和应用,我们急需了解国外建筑钢结构的应用概况。
    中国的建筑用钢总量约占全部钢产量的20%~25%,而工业发达的国家则占30%以上。如美国和日本,该项指标均已超过50%.在我国,钢在建筑中主要用于建筑用钢结构,钢筋混凝土用钢筋,钢绞线,钢丝,门窗等,而其中钢结构用钢只占10%左右,在我国一亿吨的钢产量中,真正用于钢结构上的也就200~300万吨。

    根据1998年中期美国金属建筑行业分布的一些数据,美国金属建筑行业的发展和市场的基本情况是:在20世纪50、60、70、80和90年代,以百万美元计的年销售额/以万吨计的年加工量分别为150/30、300/65、1200/110、1500/125和2200/190,如以50年代为例相应的增长倍数分别达到1、2/22、8/37、10/57和15/6.3倍。从中可以看出,美国的建筑用金属年;销售额增长很快,估计目前已经超过25亿美元,年加工量也已经达到200万吨以上。


In recent decades, the former Soviet union, the United States, Japan, the three countries in the world until it was Shanghai production among the three countries, the steel production in the world in turn first. As a result, these countries building steel structure construction enterprise vigorous development. And at the same time, the development of our country in this respect is more slow, level is relatively backward. In recent years, along with our country reform and opening up policy, implement and promote our country's economic construction has made progress by leaps and bounds. During this period, China's steel production has become the world's first. In 1996, China's steel production for the first time the one hundred million tons of mark; China's steel production has reached 114.34 million t, 1998, and annual output of 3 million t steel output growth for the development of our country building steel structure construction creates a great opportunity. But at present, our country compared with the developed countries in many ways, there are obvious difference, therefore, in order to promote the further development and application of construction steel structure in our country, we need to understand foreign the application situation of construction steel structure.

China's total construction steel accounts for about 20% ~ 25% of all steel production, industrial developed countries accounted for more than 30%. Such as the United States and Japan, the indicators have been more than 50% in our country, mainly used in construction for the steel construction steel structure, reinforced concrete with steel bar, steel wire, steel wire, doors and Windows, etc., of which accounts for only around 10%, steel structure steel one hundred million tons of steel production in our country, the real applied to steel structure is 200 ~ 3 million tons.

The metal building industry according to the mid - 1998 - some data distribution, the metal is the basic situation of the development of construction industry and market: in the 20th century, 50, 60, 70, 80 s and 90 s, with millions of dollars in annual sales/with ten thousand tons of processing capacity were 150/30, 300/65, 1200/110, 300/65 and 2200/190, such as in the '50 s, for example the corresponding growth ratio reached 1, 2/2  2, 8/3  7, 7  10/5 and 15/6.3 times. We can find that, in the United States construction metal years; Sales growth quickly, the estimate is now more than $2.5 billion, the annual processing capacity has reached 2 million tons.



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