昆明草海大桥桥型方案构思设计

Conceptual Consideration and Design of Bridge Type for Caohai Bridge in Kunming

结合昆明滇池草海大桥的特殊建桥条件,在前期方案设计竞选中提出多跨连续稀索斜拉桥方案,介绍其设计构思过程及设计特点,阐述在淤泥层厚、承载力低、地震频繁等复杂建桥环境中采取的设计措施,从而发展应用新结构体系,为类似工程提供借鉴。

In the light of the special construction conditions of Caohai Bridge across Dianchi Lake in Kunming, a multi-span continuous sparse cable-stayed bridge concept was proposed in the design competition at the initial stage of the Bridge project. In this paper, the design consideration process and design characteristics of the Bridge are presented, the design measures that are to be adopted for the construction of the Bridge in the complicated environment where silt stratum is thick, bearing capacity is poor and earthquake events are frequent are elaborated, thus a kind of new structural system is developed, is to be applied and to provide reference for the construction of similar bridge works.