一种新型开启桥的设计探讨  

Discussion on the Design of a New Type Bascule Bridge

作　　者：徐伟炜[1] 吕志涛[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《特种结构》2006年第2期67-69,共3页Special Structures

基　　金：国家自然科学基金项目;编号:50378015

摘　　要：新型开启桥的设计是以尽可能减少开启部分的结构重量为目标的。与传统开启桥相比,它采用了结构新颖,形态优美的无背索斜塔斜拉桥作为其开启结构,达到了平衡压重与结构的有机融合,并采用移动开合压重作为其开合方式,降低了对开启设备的要求。对于因主梁结构设计得轻柔而引起的振动问题,作了初步的探讨。The new type bascule bridge is a bridge whhin the limits of decreasing the weight of bascule structure. Compared with the traditional bascule bridge, it chooses cable-stayed bridge without backstays as its bascule structure, and the balance-weight and structure fuse into one. It also chooses moving ballast as its opening-closing mode. The article also tries to discuss on vibration problems aroused by gently structure design.

关 键 词：开启桥 斜拉桥 开合方式 减振体系 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]