在钢筋混凝土结构施工中,经常出现钢筋型号短缺的现象,工程又不能停工,在这种情况下,往往采用其它钢材代替。钢材的代换应满足以下条件:一要满足设计要求;二要经济合理;三要在同一应力、同一钢材型号的条件下方可代换。但在有些工程施工中,往往有个别的施工人员 In the construction of reinforced concrete structures, there is often a shortage of rebar models, and the project cannot be stopped. In this case, other steel materials are often used instead. Substitution of steel should meet the following conditions: First, it must meet the design requirements; Second, it should be economically reasonable; Third, it must be replaced under the same stress and condition of the same steel model. However, in some construction projects, there are often individual construction workers.