Repair and Strengthening Assessment of Existing Bridges Based on Time-Dependent Reliability Analysis

The strategy on repair and strengthening of existing bridges based on time-dependent reliability was analyzed with the maximum expected benefit as the objective function. A sample of risk-ranking decision was illustrated based on updated inspection information with 35 survival age. The effect of improvement of live loads and difference of repair methods on time-dependent reliability of existing bridges are considered. The results show that the decision method can be used in real project, with the cost of failure consequence and the risk of failure considered.     

地铁车辆车体组成焊后变形分析及控制方法

分析了某地铁车辆车体组成焊后变形问题及其原因,并提出了调修方法。     

基于LSTM神经网络算法的船舶电站故障诊断

船舶电站是船舶中的重要组成部分,船舶电站的故障类型较为复杂。文章利用Simulink软件平台对船舶电站各种短路故障进行仿真建模,选取各相电流电压参数作为数据集的来源,并在MATLAB中进行数据的处理和预测图像的绘制。LSTM神经网络算法相比于其他算法,解决了长时依赖问题,并对预测数据有极高的解释度。结果表明：基于LSTM神经网络算法的故障诊断模型能够很好的对船舶电站故障模式做出诊断。     

多层直立开孔挡板透空式防波堤消浪性能试验研究

从破坏波浪水质点运动轨迹出发,提出一种多层直立开孔挡板透空式防波提。通过物理模型试验,重点研究了板距布置方式及波要素对防波堤消浪性能的影响及其变化规律。试验结果表明,该结构对长波表现出较好的消浪性能,特别适用于浪大水深的海域,对促进透空式防波堤从临时挡浪措施转变为永久性建筑物具有重要意义。