structure ductility

The uniform elongation is the characteristic strain of reinforcement steel at maximum force in simple tension test, it is an important indicator to reflect the ductility of reinforcing steel, and directly affects the seismic behavior of structure.

钢筋在拉伸试验中，达到最大作用力时对应的总伸长率为均匀伸长率，它是反映钢筋延性的重要指标，直接关系到结构的抗震性能。

Reliability of a structure is expressed in term of probability value not exceeding a given bound value of ductility ratio and a design method based on the reliability of structure is proposed.

文中用结构的延伸率不大于某一极限值的概率表示结构抗震的可靠度，提出了一个根据对结构抗震可靠度的要求设计抗震结构的方法。

It illustrates that the new style shear wall has better ductility, energy dissipation and bearing capacity, especially the bearing capacity dropped indistinctively at anaphase of the deformation, the structure performance is stabilized relatively and can stay the appearance of the cracks. 3.

表明该种新型剪力墙具有较好的延性、耗能能力和承载力，特别是变形后期承载力下降不明显，结构性能较稳定，能延缓裂缝的出现。

Numerical examples show that high brittleness index can improve the bearing capacity stability of the structure and the existence of crack set up in advance will increase the ductility of the structure, but it may result in the reduction of ultimate bearing capacity.

数值计算表明：增加脆性指数可以提高结构的承载稳定性；初始预制缝可以增加结构延性但会降低极限承载力。