中文摘要：

从混凝土桥梁的历史演进中探讨其发展方向.回顾混凝土桥梁自诞生以来的技术与理论进展,将其划分为萌芽、初创、成长、普及与发展4个阶段；同时简述我国混凝土桥梁的发展历程,并指出当前在施工、设计和科研中存在的粗放和轻视现象.在此基础上,探讨混凝土桥梁值得关注的研究与发展方向,包括：原材料的基本性能、概念设计与计算机分析、B区和D区的设计方法、疲劳损伤、工业化制造技术、耐久性、新型混凝土材料以及符合可持续发展主题的混凝土桥梁设计理念.

英文摘要：

The development trend of concrete bridges is anticipated from the historical evolution of the bridges.The technological and theoretic development since the beginning of the bridges is reviewed and the development of the bridges is divided into 4 periods from the early beginning,preliminary formation,growing-up to the popularization and present development.Meanwhile,the development history of the bridges in China is briefly presented and the phenomena of extensive management and casual attitude toward the construction,design and research of the bridges in the country are pointed out.Further to the review and presentation,the research and development trend of the bridges deserving concern are studied,in which the basic performance of materials,the conceptual design,computational analysis,design methods for B-and D-regions,fatigue damage,industrialized manufacturing technologies,durability,next generation of concrete materials and the design philosophy of the bridges meeting the sustainable development are covered.