摘要
引入水利工程的桁架拱是具有拱、刚架和桁架三种性能的组合体。对这类桁架拱的整体性能、斜杆作用,对支座位移和温变的适应能力等进行了机理探讨。对上承、中承、下承、复拱四种型式的桁架拱做了综合评价,重点推荐了中承式桁架拱。
The truss arch structure is light and in great strength as a whole, its function consists of three parts: arch, truss and frame. Presents a comprehensive study on mechanism of the structure's entire function, the inclined rod's action and the adaptability of different stucture in support movement or temperature decrement. The four truss arch structures are compared, the half-through model is recommendable.
关键词
桁架
拱形
工作机理
水工结构
Hydraulic structure
Arch truss
Stastic structural analysis
Force method
