大跨Y型墩连续刚构桥设计

安庆市勇进路大桥的主桥是采用跨径组合81 m+148 m+81 m=310 m的三跨变高度连续刚构桥,大桥整体线形呈平面“S弯”,达到“直曲有度,相得益彰”效果,主墩采用Y型墩造型,通过对大桥的总体设计、对主桥的主梁、主墩等结构设计与计算,可以达到在满足通航净空的前提下,有效减小主跨跨径、降低主墩处梁高、改善墩底截面受力,又能使整体造型典雅优美,使之能融入宽广湖面而具有自然意境,可为类似桥梁的设计提供相关经验和参考。

Design of Long-span Y-shaped Pier Continuous Rigid-frame Bridge

The main bridge of Yongjin Road Bridge in Anqing City is a three-span variable height continuous rigid-frame bridge. Its span combination is 81 m+148 m+81 m = 310 m. The overall linear shape of the bridge is a plane "S bend", which can achieve the effect of "straight and curved, complement each other". The main pier is a Y-shaped pier. Through the overall design of the bridge, the structural design and calculation of the main beam and main pier of the main bridge can not only effectively decrease the span of the main span, reduce the beam height at the main pier, improve the force of pier bottom section, but also make the integral shape elegant and graceful into the natural artistic conception of the broad lake under the premise of satisfying the navigation clearance, which can provide the relevant experience and reference for the design of similar bridges.