这也是施工期结构安全事故大大高于使用期安全事故的重要原因之一。
This is one of the important reasons which cause accidents during construction more than that in service period.
针对施工期结构的时变性特征，提出了一种分析施工结构的简化分析法——模块化方法，大大提高了分析效率。
Because of the time_changing performance of structure during construction, a kind of simplify analysis method -modular method is summarized.
因此必须重视施工期桥梁结构的可靠性分析与研究。
So analysis and study of structure reliability during construction period must be emphasized.
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