中文摘要：

裁剪方法利用系统内部及超系统资源解决问题，这一特点促使了产品结构简化和成本降低。现有裁剪方法是规则导引下设计者的主观分析过程，这在某种程度上限制了裁剪操作简化和方案解获取。以裁剪本质和实现方式为约束条件，以TRIZ中基于知识的发明问题解决原理和规律为知识源，确定了基于知识的裁剪方法，对裁剪过程中系统有用功能分配形成客观知识原理启发。将其与现有裁剪方法有效结合，形成主观分析与客观原理启发优势互补的多层次、多角度裁剪方法集。并在此基础上提出基于裁剪方法集的裁剪创新设计过程模型。900t双导梁式架桥机创新设计实例对其有效性进行了验证。

英文摘要：

Trimming method which solves the problems with its own resources can ensure the structure simplification and the cost reduction. The existing trimming method is subjective analysis of designers under the rules guide, which limits simplification of operation and obtains solution in a way. The trimming methods nature and implementation as constraints, the TRIZ knowledge-based problems solving principles and rule as knowledge sources, determine that the knowledge-based trimming methods inspires in the form of objective knowledge principles during the distribution of system useful features in trimming process. Its effective integration with the existing trimming methods builds the multi-level, multi-angle trimming method set, which make their respective advantages complementary to each other. On this basis, the model of trimming innovative design is proposed. The innovative design of 900 t double guide beam bridge machine verifies it effectively.