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一、工程概况安阳市文峰路立交桥横跨安阳火车站南咽喉京广铁路正线及站线共计14条股道。该立交主桥净跨135m,桥面宽31m,结构为下承式刚架系杆拱。该下承式结构的直接承重单元主要是间距为5m的26片横梁。每片横梁由两根吊杆呈简支形式吊挂在两道拱肋上。吊杆两端由冷铸镦头锚上下锚在拱肋平台上和梁底部。横梁为预制钢筋混凝土变截面薄腹梁,中截面尺寸底0.5m×高1.22m。每片梁长30m,重26t。横梁吊装是本桥继双向转体之后的又一关键工序。
First, the project overview Anyang City Wenfeng Road Overpass Anyang Train Station South Throat Jing-Guang Railroad Line and Station Line a total of 14 shares. The overpass main bridge has a net span of 135m and a bridge deck of 31m in width. The structure is a tie-down frame-tied arch. The direct bearing unit of this underfloor structure is mainly 26 beams with a spacing of 5m. Each piece of beam by two boom was simply supported in the form of hanging two arch ribs. Both ends of the boom by the cold heading up and down the anchor anchor in the arch rib platform and the bottom of the beam. The beam is a thin web with prefabricated reinforced concrete with a cross section of 0.5 m × 1.22 m at the bottom. Each beam length 30m, weight 26t. Beam hoisting is another key process after the two-way swivel.