一、铰式排水涵洞铰式涵洞是一种比较新型的涵管结构,它是采用预制构件装配法施工的。这种涵管是由几个互相铰接的构件组成的几何可变体系,本身不能承担任何独立荷载,必需靠它与填土的相互作用才能保证稳定;同时,由于利用了填土的被动抗力而大大改善了涵管的 First, the hinge drainage culvert hinge culvert is a relatively new type of culvert structure, which is the use of prefabricated components assembly method of construction. This kind of culvert tube is a geometrically variable system composed of several components which are hinged with each other and can not bear any independent load by itself and can only be ensured by the interaction with the fill. At the same time, due to the use of the passive resistance of the filling material, Improved culvert