独塔单索面斜拉桥结构设计及技术创新

Structure Design and Technical Innovation of Single-pylon Single-plane Cable-stayed Bridge

北方某独斜塔斜拉桥,拉索呈单索面稀索体系布置。该桥为混合梁斜拉桥,主跨采用正交异性桥面板钢箱梁,边跨为预应力混凝土连续箱梁,跨径布置为(51+120)m。主塔采用钢混组合式桥塔,索塔锚固区采用钢锚箱结构。钢箱梁主梁为单箱多室结构,宽度大,梁高小,索梁锚固区域采用梁式钢锚箱连接。该文介绍了该桥的结构设计及关键技术创新,为今后类似工程提供经验和借鉴。

There is a single-pylon single-plane cable-stayed bridge in the north of China.Its cables are arranged by the single-plane sparse-cable system.This bridge is a combined beam cable-stayed bridge.Its main span is the orthotropic bridge deck steel box beam,its side span is the pre-stressed concrete continuous box beam and its span arrangement is 51 + 120 m.The main pylon is the combined steel-concrete pylon and the anchorage zone of cable pylon uses the steel anchor box structure.The main beam of the steel box beam is the single-box multi-cell structure by large width and small beam height.The anchorage zone of cable beam is connected by the beam-shaped steel anchor box.The article introduces the structural design and key technical innovation of this bridge,which can be referred for the future similar projects.