Based on Edong Yangtze River Bridge, which is the second longest hybrid girder cable stayed bridge with 926 m long main span, the influencing factors and crucial techniques of the main span closure method for long spa...Based on Edong Yangtze River Bridge, which is the second longest hybrid girder cable stayed bridge with 926 m long main span, the influencing factors and crucial techniques of the main span closure method for long span hybrid girder cable stayed bridge are studied. After theoretical analysis, numerical evaluation and practical test, the loading assistant closure method is employed in Edong Yangtze River Bridge. The loading assistant closure method, with better thermal adaptability and less influence on bridge line and the forced status, can meet the requirements of the unstressed state control method. Based on the mentioned advantages, the loading assistant closure method is applicable to long span hybrid girder cable stayed bridges. The conclusion can provide a reference for the further design of the similar brid^es.展开更多
在势流假设下,利用摄动原理,求解 Stokes 波中铅垂圆柱的二阶绕射势,得到完整的二阶波浪压力和波浪力。根据铅垂圆柱的几何特性,采用两种求解方法。一是直接利用外场解析表达式求解;二是设置控制面,外场用解析表达式,内场用简单 Green ...在势流假设下,利用摄动原理,求解 Stokes 波中铅垂圆柱的二阶绕射势,得到完整的二阶波浪压力和波浪力。根据铅垂圆柱的几何特性,采用两种求解方法。一是直接利用外场解析表达式求解;二是设置控制面,外场用解析表达式,内场用简单 Green 函数方法求解。两种方法得到的结果吻合良好,验证了计算方法的有效性,可为求解任意三维物体的二阶绕射问题提供参考。展开更多
文摘Based on Edong Yangtze River Bridge, which is the second longest hybrid girder cable stayed bridge with 926 m long main span, the influencing factors and crucial techniques of the main span closure method for long span hybrid girder cable stayed bridge are studied. After theoretical analysis, numerical evaluation and practical test, the loading assistant closure method is employed in Edong Yangtze River Bridge. The loading assistant closure method, with better thermal adaptability and less influence on bridge line and the forced status, can meet the requirements of the unstressed state control method. Based on the mentioned advantages, the loading assistant closure method is applicable to long span hybrid girder cable stayed bridges. The conclusion can provide a reference for the further design of the similar brid^es.
文摘在势流假设下,利用摄动原理,求解 Stokes 波中铅垂圆柱的二阶绕射势,得到完整的二阶波浪压力和波浪力。根据铅垂圆柱的几何特性,采用两种求解方法。一是直接利用外场解析表达式求解;二是设置控制面,外场用解析表达式,内场用简单 Green 函数方法求解。两种方法得到的结果吻合良好,验证了计算方法的有效性,可为求解任意三维物体的二阶绕射问题提供参考。
