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音大鲁赤河中桥,位于大兴安岭嫩林铁路图强站附近,中心里程K637+992,为两孔16米普通钢筋砼梁,实体墩台扩大基础,全桥位于多年冻土上,1972年建成通车。 该地区多年冻土上部季节融化层的冻融作用十分剧烈。建桥七、八年以后,在桥址处出现了较大冰丘,桥墩在冰丘的作用下产生倾斜,直接影响行车安全。回顾我们在勘测期间,桥址附近并未发现有冰丘的痕迹,可见,有些冰丘出现的时间、地点、大小是难以预测的。为了加速对冻害整治,我们将该桥的冻害调查与分析作一介绍,供大家进一步研究时参考。
Dazhong Luchi River Bridge, located in Daxinganling near the Nenlin Railway Station Tuokang, the center mileage K637 +992, for two holes 16 meters of ordinary reinforced concrete beams, solid piers to expand the foundation, the full bridge is located in permafrost, completed in 1972 Open to traffic. The freeze-thaw season meltdown in the upper part of the permafrost in the area is very intense. Seven or eight years after the bridge construction, a large ice dome appeared at the bridge site. The pier was tilted under the action of the ice dome, which directly affected traffic safety. Recall that during the survey, no traces of ice hikes were found near the bridge site. As a result, the time, location and size of some ice hikes were unpredictable. In order to accelerate the remediation of frost damage, we will make a brief introduction of the frost damage investigation and analysis of the bridge for further reference.