转体施工的宽桥面钢主梁斜拉桥索塔结构形式研究

Study of Cable and Pylon Structure Types of Cable-stayed Bridge using Swivel Construction with the Characteristics of Broad Bridge Deck and Steel Girder

转体施工的宽桥面钢主梁斜拉桥通常适用于道路以小角度跨越既有铁路等大型控制点。斜拉桥索塔结构形式对桥梁造价、转体重量、施工便捷性和美观性等方面有较大的影响。以某独塔斜拉桥为工程背景,计算和比较了4种索塔结构形式,最终选用合适的花瓶形索塔(分离式下塔柱)形式。

Cable-stayed bridges suitable using swivel construction with the characteristics of broad bridge deck and steel girder,is usually used in roads spanning existing railway and other large control point at a small angle.Cable and pylon structure types of cable-stayed bridgehave greatly influences on these aspects such as the cost calculation of bridges,the weight of swivel erection,convenience of construction,aesthetics property.Based on a single-pylon cable-stayed bridge,four types of concrete cable and pylon structures are calculated and compared.Vase shape and separate below cable and pylon structure type as a suitable cable and pylon structure type is chosen at last.