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该文以内蒙古临河黄河公路大桥为例,在过渡墩设置永久性钢护筒,采用钢护筒与承台有效连接的构造措施,研究钢护筒参与受力的桩基抗震性能,有效解决了超长联大跨连续梁桥桩基抗震的技术难题,取得了较好的经济效益。
Taking the Linhe Yellow River Highway Bridge in Inner Mongolia as an example, a permanent steel casing is installed at the transitional pier. The structural measures of effective connection between the steel casing and the cap are adopted to study the seismic performance of the steel casing engaged in the piled foundation. The technical problems of the anti-seismic of pile foundation of the ultra long joint and large span continuous beam bridge have achieved good economic benefits.