The response surface theory is adopted to approximate the limit state function that is usually difficult to be expressed explicitly in actual engineering.
应用响应面理论拟合实际工程中通常难以显示表达的极限状态函数。
参考来源 - 考虑徐变效应的结构可靠度研究In order to satisfy the requirements of both ultimate limit state and servicing limit state unbonded partially pre stressed concrete flexural members must be reasonably designed. The paper estalished the design procedure of the above members.
为满足承载能力极限状态及正常使用极限状态的要求，必须对无粘结部分预应力混凝土受弯构件进行合理设计。
参考来源 - 无粘结部分预应力混凝土受弯构件设计方法 Design Method of Unbonded Partially Prestressed Co ncrete Flexural Members·2,447,543篇论文数据，部分数据来源于NoteExpress
It is based on the limit state concept used in conjunction with a partial factor method.
它建立在临界态理念和分项系数法的基础之上。
Limit state analysis of reinforced concrete filmy flat shells is so far very rarely concerned.
钢筋混凝土膜型扁壳的极限分析，至今还极少论及。
In this paper the limit state equations for anchorage of commonly used reinforcing bars are presented.
本文给出了各种常用钢筋的锚固极限状态方程。
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