论文部分内容阅读
某桥梁上部结构为13.6+30+13.6 m拱梁组合体系的三跨预应力混凝土连续板拱桥。该桥的特点是将拱的水平推力由设置于连续板中的预应力束承担,由此组成拱梁组合体系。由于该桥结构特殊且受力情况复杂,为此建立了有限元模型,并对计算结果进行了分析。结果表明:该桥结构安全、稳定,对地形地质条件适应性好,但易受温度、差异沉降影响,应采取一定构造措施并在施工及运营期间加强监测。
The superstructure of a bridge is a three-span prestressed concrete continuous slab arch bridge with 13.6 + 30 + 13.6 m arch-beam composite system. The characteristic of the bridge is that the horizontal thrust of the arch is borne by the prestressing beam provided in the continuous plate, thereby forming the arch-girder combination system. Due to the special structure of the bridge and the complicated situation of force, a finite element model was established for this purpose and the calculation results were analyzed. The results show that the structure is safe and stable, adaptable to topographic and geological conditions, but vulnerable to temperature and differential settlement. Some structural measures should be taken and monitoring should be strengthened during construction and operation.