大跨度预应力混凝土梁式桥设计优化  

Design Optimization of the Long Spans Pre-stressed Concrete Beam Bridge

作　　者：张俊海[1] 杜乃娟[1] 

机构地区：[1]工程兵指挥学院,徐州221004

出　　处：《科学技术与工程》2010年第24期6092-6094,6102,共4页Science Technology and Engineering

摘　　要：大跨度预应力混凝土梁式桥在公路工程中得到广泛应用,针对该类桥梁普遍出现梁体裂缝、跨中下挠等病害,从结构总体、预应力构造、结构计算等方面深入分析,提出结构设计优化的建议,延长结构的耐久性。The long spans pre-stressed concrete beam bridges have been built in highway project, the damages of the beam cracks and mid-span down deflection in terms of the overall structure design, pre-stressed construction and structural calculation are analyzed. The structural design optimization was advised on improving the concrete structure durability.

关 键 词：大跨度梁式桥 预应力 病害 优化 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]