关键词: 桥梁施工力学, 理论体系, 大跨连续刚构桥

Abstract: Construction mechanics which mainly studies behaviour and characters in construction stage is a development on the basis of engineering mechanics. The formation of bridge construction mechanics theroy promotes the development of construction techniques and becomes the basis of construction control techniques in big-span bridges. Bridge construction mechanics theory has many achievements, such as calculation method of superposition of beam dead load endogenous force, calculation method of superposition of deflection, calculation method of creep and effective prestressing force and most dangerous state and temperature influence in construction and thermal stress of cement concrete at an early stage, determination of construction order and methods,and so on. A big-span continuous rigid frame bridge is taken as an example which shows the application of construction mechanics.

Key words: bridge construction mechanics, theory system, big-span continuous rigid frame bridge