九年桥位于日本岩手县北上市下鬼柳四地,横跨和贺川,是一座混凝土桥梁,建于1927年2月。该桥已经使用了近80年,其上交通量仍较大。为更好地服务于市民,对该桥进行维修加固,并在其一侧新建一座人行桥。人行桥桥长331.0m,跨径布置为(51.5+51.6+51.6+44.8+44.8+44.8+44.8+40.7)m。为快速、近距离施工,人行桥基础采用预 Nine years bridge is located in Japan’s Iwate Prefecture north of the city ghost willow four, across and Hechuan, is a concrete bridge, was built in February 1927. The bridge has been in use for nearly 80 years and the traffic on it is still high. In order to better serve the public, the bridge was repaired and reinforced, and a new footbridge on one side. The footbridge is 331.0m long and has a span of (51.5 + 51.6 + 51.6 + 44.8 + 44.8 + 44.8 + 44.8 + 40.7) m. For fast, close construction, footbridge foundation pre-use