论文部分内容阅读
贵港郁江大桥主跨为280m中承式钢管混凝土拱桥。为减少大桥施工期间对西江航道的影响,钢管拱肋、吊杆、钢横梁、T形混凝土梁采用缆索吊方案安装;缆索吊装系统设计最大吊重为807kN,采用解析法选配主索、工作索、扣索,并基于有限元法对分离的主、扣塔进行空间模拟验算;总体设计中应充分考虑主扣塔高差对主塔缆风与扣索交叉相互干扰,以及扣索索鞍过低导致钢绞线与地面摩擦的影响,扣索锚固采用具有防松锚具,对于偶数段拱肋,可利用缆索吊的吊钩力代替部分扣索,使拱肋快速合龙。
The main span of Guiyang Yujiang Bridge is 280m half-through concrete-filled steel tube arch bridge. In order to reduce the influence of the bridge on the Xijiang waterway during the construction of the bridge, the steel pipe arch rib, the hanger rod, the steel beam and the T-shaped concrete beam are installed by using the cable hanging plan. The maximum hoisting weight of the cable hoisting system is 807kN. Cable, cable and cable, and based on the finite element method of the separation of the main and buckle tower space simulation verification; the overall design should take full account of the main buckle tower height difference between the main tower cable winds and buckle cross mutual interference, Low lead to the impact of the strand and the ground friction, buckle anchor with anti-loosening anchors, even for arch ribs, cable hooks can be used instead of part of the hook hook force, the arch rib quickly closing.