复杂水文环境下拱桥支架设计与力学性能智能监测技术

Design and Intelligent Monitoring of Mechanical Performance of Arch Bridge Scaffolding in Complex Hydrological Environments

以跨西荆河特大桥为例,针对复杂水文环境,设计了钢管柱、型钢分配梁和贝雷梁组合的支架体系,确保了大跨度系杆拱桥施工中的稳定性和安全性。采用有限元模拟分析支架的力学性能,并重点监测其在施工荷载、风荷载及水流冲击下的变形和应力分布,结果表明:支架在竖向位移、水平位移及应力分布方面均符合设计规范要求,表现出良好的抗冲击性能和结构稳定性;采用智能监测技术对施工期间的支架应力、位移和沉降的实时监控,保障施工过程的安全。研究成果为复杂水文环境下的大跨径拱桥支架设计与实施提供了技术参考与实践经验。

This study focuses on the West Jinghe River Grand Bridge to address the design of a scaffolding system suitable for complex hydrological environments.A combination of steel pipe columns,steel distribution beams,and Bailey beams was employed to ensure stability and safety during the construction of long-span tied arch bridges.Finite element simulations were conducted to evaluate the mechanical performance of the scaffolding,with emphasis on deformation and stress distribution under construction loads,wind loads,and water flow impacts.Results showed that the scaffolding met design requirements for vertical and horizontal displacements as well as stress distribution,exhibiting strong impact resistance and structural stability.Intelligent monitoring technology is used to monitor the stress,displacement,and settlement of the scaffolding throughout the construction in real time,which ensures the safety of the construction process.The research provides technical insights and practical guidance for the design and application of scaffolding systems in long-span arch bridges under complex hydrological conditions.