土木工程外文翻譯--結(jié)構(gòu)特性分析

1、本外文文獻(xiàn)來自《Simplified Design of Steel Structures》 （《鋼結(jié)構(gòu)簡化設(shè)計叢書 第七版》 ）,作者 James Ambrose（詹姆斯·安布羅斯） 。INVESTIGATION OF STRUCTURAL BEHAVIORInvestigating how structures behave is an important part of structural design: it

2、 provides a basis for ensuring the adequacy and safety of a design, In this section I discuss structural investigation in general. As I do throughout this book. I focus on material relevant to structural design tasks. Pu

3、rpose 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

4、 the following three factors: ? Functionality. or the general physical relationships of the structure's form. detail. durability. fire resistance. deformation resistance. and so on. ? Feasibility. including cost. av

5、ailability of materials and products. and practicality of construction. ? Safety. or capacity 10 resist anticipated loads. Means An investigation of a fully defined structure involves the following: 1. Determine the stru

6、cture's physical being-materials, form, scale. orientation. location. support conditions, and internal character and detail. 2. Determine the demands placed on the structure-that is. loads. 3. Determine the structur

7、e's deformation limits. 4. Determine the structure's load response-how it handles internal forces and stresses and significant deformations. 5. Evaluate whether the structure can safely handle the required stru

8、ctural tasks. Investigation may take several forms. You can ? Visualize graphically the structure's deformation under load. stress. and vice versa. FIGURE 4.1 Free-body diagrams.For example. Figure 4.la shows {he ex

9、aggerated deformation of the bent in Figure 4.1 under wind loading. Note how you can determine the nature of bending action in each member of the frame from this figure. Figure 4.2b shows the nature of deformation of i