混凝土T构-拱组合体系结构性能研究

Research on Structure Performance of Concrete T-Frame and Arch Composite System

以主跨为380 m的盘锦某拱桥方案为例,分析混凝土T构-拱组合体系桥梁的结构特点及力学性能。通过与简支梁拱组合体系桥梁进行对比分析,探索该类拱结构在力学上的优势。研究结果表明,T构-拱组合体系桥梁不仅能够改善拱肋的受力、减小截面尺寸,并且能显著地增大结构的整体刚度,为拱桥向更大跨度发展提供可能。

Taking a bridge design plan with the main span of 380 m in Panjin City as an example, the article analyses the structural features and mechanical properties of the bridge composed of concrete T-shaped rigid frame and arch. Compared with the simple beam arch composite bridge, it also examines the mechanical advantage of this arch bridge type. The results show that this new bridge structure can not only decrease the stress of arch rib and section size, but also enhance the whole stiffness of the structure, which makes the development of long span of arch bridge possible.