为探究大跨度双幅桥梁间气动干扰效应对桥梁气动稳定性的影响，本文基于IEEE1588时钟同步协议，开发了一种新型的气弹-测压风洞试验系统，该系统能够实现对结构表面压力和结构振动响应的精准同步测量。利用这一创新的同步测试平台，系统地分析了截面形状、结构间距以及风攻角等因素对双幅桥梁气动干扰效应的具体影响。研究表明，气动干扰显著增强了双幅桥梁的风致振动，相较于单幅桥梁表现出了更为复杂的非线性气动行为。此外，新研发的测量系统以其高精度、优秀的数据同步能力和强大的适用性，不仅适合用于研究结构振动与气流之间的双向流固耦合作用，还能有效支持非线性自激力模型的建立。此系统可为大型建筑和长跨度桥梁等风敏感结构的气动弹性研究及抗风设计提供更有效的技术支持。

To investigate the impact of aerodynamic interference effects between large-span dual-deck bridges on their aerodynamic stability, this paper develops a novel aeroelastic-pressure wind tunnel testing system based on the IEEE1588 clock synchronization protocol. This system enables precise synchronous measurement of surface pressure and structural vibration response. Utilizing this innovative synchronized testing platform, we systematically analyzed the specific influences of section shape, structural spacing, and angle of attack on the aerodynamic interference effect in dual-deck bridges. The study reveals that aerodynamic interference significantly intensifies wind-induced vibrations in double-deck bridges, exhibiting more complex nonlinear aerodynamic behavior compared to single-deck bridges. Furthermore, the newly developed measurement system, characterized by its high precision, excellent data synchronization, and strong adaptability, is not only suitable for studying the bidirectional fluid-structure interaction between structural vibrations and airflow but also effectively supports the establishment of nonlinear self-excited force models. This system provides more effective technical support for the aerodynamic elastic research and wind-resistant design of wind-sensitive structures such as tall buildings and long-span bridges.

创新研究群体科学基金(No. 52221002),高等学校学科创新引智计划(111计划，No. B18062)，中央高校基础研究基金(Nos. 2022CDJXY-016, 2023CDJXY030, 2024CDJXY021), 重庆市杰出青年科学基金项目(No. 2022NSCQ-JQX2377), 重庆市技术创新与应用发展重点项目(Nos. CSTB2022TIAD-KPX0145, CSTB2022TIADKPX0142 and CSTB2024TIADKPX0157), 国家外专项目( DL2023165002L)