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中文摘要：
近年来，随着桥梁美学理念的提升和景观要求的提高，桥梁造型不断创新。但与此同时，因规范、地域差异和设计师对结构设计与施工的认识偏差，出现了不少不合理的结构体系，造成造价升高、安全降低、施工麻烦、养护困难的现象。结构体系的合理性及其优化和创新问题突显，对桥梁结构体系的研究显得越加迫切与重要。首先明确结构体系的概念——“结构体系是结构功能、外形及其受力形态的统一”，并讨论桥梁结构体系研究的内容与意义，为开展桥梁结构体系的研究奠定基础。在此基础上结合工程实例，介绍体系优化与创新的方法，也为工程师在设计工程中进行合理的体系创新与优化提供借鉴。
英文摘要：
In recent years, with the bridge aesthetic conception and landscape requirement improving, configuration of bridges is becoming more and more innovative. But, because of the code and region differences and inconsistent designers＇ understanding of structural design and construction, many unsuitable structure systems have been employed, resulting in increased cost, reduced safety, construction inconvenience, curing difficulty, and so on. Therefore, the rationalization, optimization and innovation of structural systems have become more urgent and important for bridge structures systems. The concept of structure systems is proposed, and the content and significance of the study of bridge structure systems is discussed. With respect to the examples, the method for system optimization and innovation of bridge structures is introduced.
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