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2017年7月6日凌晨,杭州上塘河水域欢喜永宁桥东北侧桥体发生坍塌。经了解,此次桥体坍塌是因多日暴雨导致桥梁金刚墙内填土吸水膨胀,东北侧金刚墙部分倒塌,带动部分拱券和桥面松动垮塌。
On the early morning of July 6, 2017, the bridge on the northeast side of Yongning Bridge in Hangzhou’s Tongtang River watershed collapsed. It is understood that the bridge collapse is due to multi-day torrential rain led to fill the bridge wall filled with water swelling, partial collapse of the northeast side of the diamond wall, driving part of the arch and deck loose collapse.