土建專業(yè)畢業(yè)設(shè)計(jì)外文翻譯--大跨度f(wàn)rp網(wǎng)架結(jié)構(gòu)的展望和分析

1、1Development and analysis of the large-span FRPwoven web structureABSTRACT: An innovative large-span structural system, namely the FRP woven web structure (FRPWWS), is introduced in this paper. In an FRPWWS, the high-str

2、ength FRP strips are “woven” like bamboo strips in a Chinese bamboo mat to form a plane web. The outer edge of the web is anchored on an outer ring beam, and an inner ring beam is provided to anchor the FRP strips at the

3、 center of the web. The stiffness of the web to resist various loads is derived from the initial prestressing during the “weaving” stage and the additional tensioning as a result of the out-of-plane movement of the inner

4、 ring beam. As a result of the high strength-to weight ratio of FRP, this new structural form offers an attractive option for the construction of spatial structures with spans longer than are possible with conventional s

5、tructural materials. In this paper, the basic layout and construction procedure for a simple FRPWWS is first presented. Three basic weaving patterns are next explained. Several variations of the basic structural system a

6、re also proposed. A simple mechanical model is presented for the deformation of individual FRP strips. Results from a finite element analysis of an example structure are also given. The results of these analyses confirm

7、the feasibility of the FRPWWS.1 INTRODUCTION FRP is a new kind of structural material, whose use in civil engineering has been actively explored in recent years. Due to its favorable properties like 3tension is utilized

8、to resist loads. However, the FRPWWS has its unique advantages: (1) the FRP strips are ideal for super large-span structures due to their low self-weight and their superior material properties in the lengthwise directio

9、n, which are efficiently utilized, while the weakness of inferior properties in the transverse directions is not exposed; (2) significant damping can be expected to arise from friction at joints between FRP strips, whi

10、ch can enhance the resistance of the structure to wind and earthquake loads; (3) the regular weaving pattern leads to an aesthetically pleasing surface; and (4) the corrosion resistance of FRP and the ease of installatio

11、n because of its lightweight translate into low maintenance costs.In this paper, the basic layout and construction procedure for a simple FRPWWS system is presented in detail. The weaving patterns in plane aresummarized

12、into three types. Some spatial FRPWWS forms for practical applications are also proposed. A simple mechanical model for individual FRP strips in the web is presented. Results from the finite element analysis of a simple

13、FRPWWS are also described.2 LAYOUT OF A SIMPLE FRPWWSA simple FRP woven web structure is composed of a FRP woven web, an outer ring beam and an inner ring beam for anchorage, and an additional weight or a set of prestres