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北深沟大桥北深沟大桥为跨越深沟而设,主桥采用净跨径260米的中承式钢管混凝土拱桥。主桥拱轴线为悬链线,矢跨比为1/4.5,拱肋断面形式为桁架式,拱肋高度为5.2米,宽2.7米,由4根Φ1000mm的钢管组成,钢材采用Q345D钢,管壁厚度18mm;腹杆采用Φ400mm壁厚为10mm的钢管,上下缀板采用壁板为12mm的钢板。纵向四根钢管和缀板内灌注C50混凝土,其余均为空钢管。
The North Shengou Bridge The North Shengou Bridge is designed to cross the deep trench. The main bridge adopts a half-through type CFST arch bridge with a net span of 260m. The main axle arch axis is catenary, the ratio of sag to span is 1 / 4.5, the cross section of arch rib is truss type, the height of arch rib is 5.2m and width is 2.7m. It consists of 4 Φ1000mm steel tubes, Q345D steel, Wall thickness of 18mm; web using Φ400mm wall thickness of 10mm steel pipe, the upper and lower panels with 12mm wall plate. Longitudinal four steel pipes and slab perfusion C50 concrete, the rest are empty steel pipe.