龙塘立交桥上部折面梁格分析及异形墩配筋设计

Bridge decks fold-surface beam-grid analysis and irregular shape pier reinforcement design of Longtang overpass

以一座单箱四室的城市跨线高架桥为例,采用慧加软件建立折面梁格计算模型,根据各道腹板剪力分配的比例配置纵梁预应力钢束,同时介绍了中横梁配束计算原则。针对桥墩特点采用实体单元分析了桥墩受力,根据计算结果配置桥墩系梁钢筋,并对墩身受力复杂部分箍筋配置提出指导性意见。

Taking a urban viaduct with single box and four chamber for example,fold-surface beam- grid calculating model was established using WISEPLUS. Prestressed tendons setting can be achieved according to the proportion of each web shear distribution. The principle of middle cross beams prestressed tendons setting was introduced at the same time. The stress of pier was analyzed with entity unit according to the characteristics of pier. According to the calculating results,the steel bar of pier collar beam was set and the better guidance of stirrups setting in the pier stress complex parts can be achieved.