考虑施工过程的结构受力分析方法

Stress Analysis of Structures Considering Construction Process

论述地铁车站等地下工程施工过程中结构的受力状态会不断发生变化,结构受力分析需要考虑施工过程的影响。指出施工过程分析方法有总量法和增量法,目前应用较多的是增量法。通过理论分析和工程实例计算比较,得出结论:对于线性问题,两种方法能够得到完全相同的结果;而对于非线性问题,增量法在理论上存在缺陷,实例分析结果表明与总量法有较大的差异,只能通过总量法进行求解。

Stress conditions of underground structures such as subway stations will be changed with the construction process which should be taken into consideration.The increment method and total stress method are two effective methods for the stress analysis of structures,while the former is applied more often.By way of theoretical analysis and comparing engineering examples,it has been proved that the two are the same for linear problems,while for non-linear problems,the increment method possesses some theoretical defects.In this way,the total stress method can be used only.