西南山区小跨径悬索桥上部结构施工技术研究

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中图分类号：U448.25 文献标识码：A文章编号：1672-3791（2026）03-0158-04

Research on Construction Technology of the Superstructure of Small-Span Suspension Bridge in Mountainous Areas of Southwest China

LAI Qingyu REN Hao QIU Yu CHU Xiaopeng LI Xudong China Communication North Road & Bridge Co.，Ltd.，Beijing，1Ooooo China

Abstract： To improve the backward transportation conditions in the mountainous areas of Southwest China，more and more large bridges are being constructed.In the terrain of "narrow valleys and deep gorges" with steep banks on both sides，smal span suspension bridges have demonstrated unique application advantages due to their excellent spanning capacity and seismic performance.To accelerate the construction progressof smallspan suspension bridges in mountainous areas and reduce construction costs，this paper conductsan analysis and research on the design and construction of the superstructure ofsmallspan suspension bridges in mountainous areas，optimizing key construc tion technologies such as the traction system，catwalks，main cable erection，and cable suspension construction， which is conducive to cost reduction and eficiency improvement and has good application and application value.

eywords： Southwestern mountainous area; Suspension bridge; Small span; Superstructure

我国西南地区地质构造复杂、地势起伏剧烈，可以用于交通基础设施建设的场地狭窄，使外部交通条件不利，难以运输大型物件，严重制约该地区经济社会发展。（剩余4662字）