评价一个施工方式的好与差时可以提出很多指标,如劳动生产率、装备生产率、单方造价、竣工面积、材料消耗、工程质量等等,但很难找到一个施工机械组合方案使这些指标都高。一般总是一些指标较好,一些指标一般,一些指标较差。因而我们常常只能定性地说某种方案好或某种方案差,而定量地进行评价有一定的困难。由于影响施工效果的因素不是单一的,它们构成了一个系统,须进行系统的综合。又由于施工方式的好与差之间并无明确的界 When evaluating a good or bad construction method, many indicators can be proposed, such as labor productivity, equipment productivity, unilateral cost, completed area, material consumption, project quality, etc., but it is difficult to find a construction machinery combination scheme to make these indicators high. Generally, some indicators are always good, some indicators are normal, and some indicators are poor. Therefore, we often can only qualitatively say that a certain scheme is good or that a certain scheme is poor, and there are certain difficulties in making quantitative assessments. Because the factors that affect the construction effect are not single, they constitute a system that must be systematically integrated. And because there is no clear boundary between good and bad construction methods