A civil engineering in the absence of prior to considering the two factors,structural characteristics of the engineering consciousness; one is the reasonable cost of investment and construction of civil engineering.The author from the start,a careful analysis of the main aspects of the use of steel structure in civil engineering and steel structure needs to pay attention to in the construction of civil engineering.%一个土木工程在还没有进行之前就要考虑到两个方面的因素,意识该工程的结构特性；一是土木工程的投资成本和施工的合理有效性.笔者就从小处出发,认真分析了钢结构在土木工程中的使用以及钢结构在土木工程施工中需要注意到的主要方面.
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