拱梁组合体系预应力混凝土连续板拱桥结构分析研究  

Structural analysis and study on pre-stressed concretecontinuous plate arch bridge of arch-beam combined system

作　　者：孙广臣[1] 何山[2] 

机构地区：[1]中冶长天国际工程有限责任公司,湖南长沙410007 [2]湖南交通职业技术学院,湖南长沙410004

出　　处：《工程建设》2011年第6期28-30,34,共4页Engineering Construction

摘　　要：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。crete continuous tem. The feature pre-stressed The upper structure of a bridge is the three-span pre-stressed con- slab arch bridge of 13.6 ＋ 30 ＋ 13.6m arch-beam combined system. The feature of the bridge is that the horizontal thrust of arch is undertaken by steel wires in the continuous plate which form the arch-beam combined system. Due to complicated stress condition of the special bridge structure, the finite element model was established, and the calculation result was analyzed. The result indicates that the bridge is safe and stable with good adaptability to various kinds of topographic and geological conditions, but it is easily affected by temperature and the differential settlement, and some structure measures must be taken and monitoring should be strengthened during construction and operation period.

关 键 词：拱梁组合体系 有限元模型 分析计算 温度 差异沉降 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]