摘要
各种型式的铁路及公路大跨度预应力混凝土桥梁广泛采用节段施工方法，挠度及预拱度的计算和设置是施工控制的关键技术．本文在对现行的基于相对挠度的预拱度计算设置方法进行分析后，进而提出了新的绝对挠度法。理论分析及实际应用证明，新方法正确可靠，便于推广应用，能明显提高桥梁施工控制质量。
or different types of the railway and the highway long-span prestressed concrete bridges,the construction method of building bridges section by section has been widely adopted,in which the deflection and the pre-arched calculation and installation are the key technique for engineering control. The pace analyzes the current pre-arched calculation and installation method based on the relative deflections,and proposes a new absolute deflection method. The theoretical analysis and pratical applications proof that the new method is proper and reliable, easy to be applied and populared,and able to raise obviously control quslity of building bridges.
出处
《铁道工程学报》
EI
1996年第3期67-71,共5页
Journal of Railway Engineering Society
关键词
预拱度计算
绝对挠度法
pre-arched calculation
absolute deflection method
