基于随机轨道粗糙度和车桥偶合单元，提出了大跨桥梁移动车辆荷载作用下随机振动的计算模式。
Based on random rail roughness and vehicle-bridge coupling element, a method is proposed for calculating random vibration of long span Bridges under moving vehicles in this paper.
在有关理论研究的基础上，提出了大单元教学的理论依据并围绕教什么，怎样教，教学效果如何等问题。
The theoretical bases and planing patterns of big-unit teaching are presented. Around what to teach, how to teach, the teaching effect, etc.
为模拟排水效应并解决排水孔附近水头梯度大、有限元网格划分细而显著增加计算量的问题，提出了汇线单元法。
The line sink drainage element method was proposed to solve the problem that small FEM grid was needed near drainage holes due to the high hydraulic gradient at the cost of time consuming.
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