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舞阳河特大桥是贵州省境内思南至剑河高速公路第3合同段的控制性工程。桥位区处于典型的侵蚀型低山峡谷地貌,地形起伏极大,地质情况非常复杂。笔者通过对桥位区各种桥型和桥跨的比选,确定了2×40mT+115m+2×180m+115(100)m大跨连续刚构方案为最终实施方案,进而总结了类似山区桥型、桥跨比选的一些体会。
Wuyang River Bridge is within the province of Guizhou Sinan to Jianhe Expressway Contract Section 3 of the control project. The bridge area is in a typical eroded low mountain and canyon topography. The terrain is extremely undulating and the geological conditions are very complicated. Based on the comparison and selection of various bridge types and bridge crossings in the bridge area, the author has determined the long-span continuous rigid frame plan of 2 × 40mT + 115m + 2 × 180m + 115 (100) m as the final implementation plan, and then concluded that similar mountainous areas Bridge type, bridge cross-select some experience.