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1·The concept of serviceability limit state and ultimate limit state is considered.

而且本文考虑了正常使用极限状态和剥离极限状态的概念。

2·Finally, the effect of secondary moment at the ultimate limit state design has also been suggested.

对极限承载力计算中次力矩的效应提出了设计建议，可供结构设计应用。

3·Presently, most limit-state design codes use reliability principles for designing for ultimate limit states.

目前，大多数极限状态设计规范，运用可靠度原理来对极端极限状态进行设计。

4·The design of a geotechnical work should satisfy both the ultimate limit state and serviceability limit state requirements.

岩土工程设计需要同时满足极端的极限状态和功能极限状态要求。

5·Considering the ultimate limit state of buildings and using Damage-based Response Spectra (DBRS) program, a series of RD spectra are obtained.

考虑结构极限状态设计，并通过自编DBRS程序，研究得到了RD谱族；

6·After calculating some examples the author analyzes the RC structure's serviceability limit state and ultimate limit state, and finds the main influence factors.

通过相应的计算实例，对混凝土结构的正常使用极限状态和承载能力极限状态进行了分析，得到了对这两种极限状态影响较大的因素。

7·In this paper, three approaches are presented for determining concrete cover depth of reinforced concrete structures, with emphasis on ultimate limit state reliability based approach.

提出了确定混凝土保护层厚度的三种可靠度方法，着重研究了以承载能力可靠度的降低为控制条件的混凝土保护层厚度确定问题。

8·It is researched that the ultimate flexural capacity of external prestressed composite steel-concrete beams in ultimate limit state of carrying capacity, and the relevant formula are derived.

研究了体外预应力钢-混凝土组合梁在承载能力极限状态下的抗弯承载能力，提出了相应的计算公式。

9·The truss-arch model is also used to study the stress of specially shaped columns at their ultimate shear limit state.

采用桁架-拱模型理论对异形柱的受力进行了分析。