只要承认塑性的存在,或者说应用超过屈服点的强度,就能提高结构物的公称能力而不用改变它的尺寸、形状和金属材料的特性。初看起来,这似乎是无中生有的冒险企图,但是塑性设计已经包含在一般工程之中,而且也是现在的标准和产品技术条件所承认的。 By acknowledging the existence of plasticity, or the application of strength beyond the yield point, the nominal capacity of the structure can be increased without changing its size, shape and properties of the metal material. At first glance, this seems like an out of the box adventure, but plastic design is already included in the general engineering and is now recognized by standards and product specifications.