莆田市樟林大桥主桥设计

樟林大桥为40 m+100 m+40 m的蝶型中承式拱桥,无横撑拱肋保持在外倾20°平面内,拱肋与V撑顺接,全桥线条清晰流畅,主跨两侧人行道实现了带状观景台的功能。结合桥位处地质条件,中跨设置接缝使得结构温度应力较小,合理控制基础规模,主跨结合梁布置使得结构自重较轻、拱肋轻巧,布置系杆平衡拱的水平推力。计算分析表明结构受力及稳定性均满足规范要求,为同等跨径具有景观要求的市政桥梁提供了一种新的选型。

Design of Main Span for Zhanglin Bridge in Putian City

Zhanglin Bridge is a 40 m+100 m+40 m butterfly-shaped half through arched bridge. The arch rib without transverse stay is kept within the extroversion 200 plane. The arch rib is suitably connected with V support. The alignment of whole bridge is clear and smooth. The sideways at both sides of the main span realize the function of strip-shaped viewing platform. Based on the geological condition of bridge position,the seam set up in the middle span makes the temperature stress of structure smaller. The basic ...