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Brazilian Trio

机译：巴西三重奏

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摘要

Reducing the consumption of natural resources is one of our most pressing challenges. Thus one of the most effective contributions a structural engineer can make to sustainable design is to minimize the material needed to erect the load-bearing structure of a building. A structure becomes lighter if the ratio of the structure's own weight ("self-weight") to the live loads acting on that structure becomes smaller. Not only should engineers build structures to be as light as possible; they should also devise design processes for developing efficient systems that inherently have the potential to be lighter. This is achieved by means of systems in which the geometry of the structure and the composition of the elements are chosen so that the loads are mainly carried through a combination of pure compression and tension. This concept of avoiding bending is key to the successful design of a lightweight structure.
机译：减少自然资源的消耗是我们最紧迫的挑战之一。因此，结构工程师可以对可持续设计做出的最有效的贡献之一就是使建立建筑物的承重结构所需的材料最小化。如果结构的自重（“自重”）与作用在该结构上的活荷载之比变小，则结构会变轻。工程师不仅应该建造尽可能轻的结构；他们还应设计设计流程，以开发高效的系统，这些系统固有地具有减轻重量的潜力。这是通过系统实现的，在这些系统中，选择结构的几何形状和元素的组成，以便主要通过纯压缩和拉伸的组合来承担载荷。避免弯曲的概念是轻型结构成功设计的关键。

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