高寒地区系杆拱连续梁桥系杆与拱肋温度场试验研究

Study on temperature field of tie bar and arch rib with continuous beam and tied arch in cold region

系杆拱连续梁组合体系桥在桥梁受力、变形、跨越能力及造型等方面均表现出了很强的优点。但由于系杆拱连续梁组合桥属于超静定结构,在结构组成及受力性能均较一般桥梁复杂。由相关资料及研究表明,环境因素对结构受力有较大的影响,严重的会对结构的安全性产生影响。对系杆拱连续梁组合桥的系杆、拱肋竖向温度场进行现场试验测试,对总结其竖向温度梯度分布规律提供理论数据。

Tied arch and continuous beam composition bridges have significant advantages in many aspects like strength, anti-deformation, spanning and shaping ability. However, due to its belonging to indeterminate structure, this kind of bridge is more sophisticated than other common bridges in structure and mechanical behavior. According to related data and research, structure performance is vulnerable to its environment, even to the extent of damaging its stability. In this paper, the vertical temperature field of tied rod and arch rib of composite bridge is tested on site, which provides theoretical data for summarizing the vertical temperature gradient distribution law of tied arch continuous beam composite bridge.