考虑侧土压力的部分地锚式悬索桥锚碇设计

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中图分类号：U44 文献标志码：A DOI： 10.15935/j.cnki.jggcs.20250320.001

AbstractAs a new type of structural system，partially earth-anchored suspension bridges can fectively cope with the limitations of traditional suspension bridges in soft soil foundations.However，existing research has not fully explored the contribution of lateral earth pressure to reducing the anchorage size.This study proposed a flowchart for the anchorage design of partially earth-anchored suspension bridges considering the contribution of lateral earth pressures.Based on acomparative analysis of a specific engineering case，the results show that incorporating the contribution of earth pressures in the design processcan obviously enhance the capacity of the anchorage foundation.As aresult，the anchorage size in a partially earth-anchored suspension bridge can be reduced by up to 22% ，significantly improving its economic performance.This study also discussed the specification requirements for anchorage foundation displacement during the bridge's service period and analyzes the impact of such displacement on structural performance.The findings clarify the anchorage design method of partially earth-anchored suspension bridges，demonstrate the economic advantages，and provide valuable guidance for adjusting anchor cable forces of the bridge type during operation.These insights serve as a valuable reference for the construction and maintenance of this bridge type. Keywordspartiallyearth-anchored suspension bridges，anchorage foundation design，lateral earth pressure，adjusting anchor cable forces

0 引言

悬索桥属于缆索承重桥梁体系，由主缆、桥塔、吊杆、加劲梁、锚碇等构件组成，具有跨越能力强、线形优美等优点[24]。（剩余13045字）