济南建邦黄河大桥主桥设计

摘要

济南建邦黄河大桥主桥采用主跨2×300 m三塔预应力混凝土梁斜拉桥。中塔处为塔梁墩固结，边塔塔柱通过箱梁时，箱梁形成开口截面，从而主塔与塔墩固结，形成中塔固结，边塔半漂浮的体系；主梁采用单箱四室斜腹板截面，桥宽30.5m，标准索距梁段均设有横梁及横向加劲肋板；中塔柱为纵向人字型结构，边塔柱采用独柱式结构；斜拉索采用镀锌平行钢丝拉索；基础采用钻孔灌注桩基础。大桥在桥式布置、主梁、主塔构造设计等方面具有一定的技术突破与创新。%Jinan Jianbang Yellow River main bridge main span 2×300 m cable-stayed bridge with three tow-ers of prestressed concrete beam. In the tower at the tower pier beam consolidation, while Tata by column box girder,the box girder forming the opening section so that the main tower and the tower pier consolida-tion,consolidation formation tower,while the tower of semi-floating system;main girder single box room four inclined web section bridge width 30.5 m,standard cable from the beams and the transverse beams are equipped with stiffening ribs;the tower longitudinal herringbone structure, while the use of single-column structure tower; cable-stayed adoption galvanized parallel wire cable; base using bored pile foundation. Bridge has certain technical breakthroughs and innovations in bridge arrangement, the main beam, the main tower structure design and so on.