土木工程外文翻譯(外文)框架-展示頁
2025-07-05 16:32本頁面
【正文】 ughout this book. I focus on material rele vant to structural design tasks. Purpose of Investigation Most structures exist because they are needed. Any evaluation of a structure thus must begin with an analysis of how effectively the structure meets the usage requirements. Designers must consider the following three factors: l Functionality. or the general physical relationships of the structure39。s form. detail. durability. fire resistance. deforma tion resistance. and so on. l Feasibility. including cost. availability of materials and prod ucts. and practicality of construction. l Safety. or capacity 10 resist anticipated loads. Means An investigation of a fully defined structure involves the follow ing: 1. Determine the structure39。s deformation limits. 4. Determine the structure39。s deformation under load. l Manipulate mathematical models. l Test the structure or a scaled model, measuring its responses to loads. When precise quantitative evaluations are required. use mathe matical models based on reliable theories or directly measure physical responses. Ordinarily. mathematical modeling precedes any actual constructioneven of a test model. Limit direct mea surementto experimental studies or to verifying untested theories or design methods. Visual Aids In this book, I emphasize graphical visualization。s internal force actions. Operating on this free body arc its own weight and the actions of the beam segments on the opposite sides of the slicing planes. since it is these actions that hold the removed portion in place in the whole beam. Figure . a tiny segment. or particle. of the beam material is isolated, illustrating the interactions between this particle and those adjacent to it. This device helps designers visualize st
環(huán)評公示相關推薦
鄂ICP備17016276號-1