论文部分内容阅读
针对金属结构安全是水电站引水系统安全稳定运行的关键问题,监测了云南省龙江水电站引水隧洞压力钢管在施工期及充水试验时钢板的应力情况,综合分析了钢板应力的变化规律,结合施工期及充水试验时钢板应力的变化特点,采用阶跃函数建立了钢板应力监控模型,并与传统的统计模型进行比较。结果表明,该模型精度明显优于传统统计模型,可准确反映引水隧洞在施工期及充水试验时压力钢管钢板应力状态,且能通过监控模型分析将安全监测结果与实际工况有机结合,提高了安全监测结果对实际工况的反馈效果。
Aiming at the key problem that the metal structure safety is the safe and stable operation of hydropower station diversion system, the stress of the steel plate in the diversion tunnel of the Longjiang hydropower station during the construction period and water filling test was monitored. The variation of the stress of the steel plate was analyzed synthetically, And the stress of steel during water-filled test, the stress-monitoring model of steel plate was established by step function and compared with the traditional statistical model. The results show that the accuracy of the model is obviously better than that of the traditional statistical model, which can accurately reflect the stress state of the penstock of the penstock in the construction period and the water filling test, and can combine the safety monitoring results with the actual working conditions through monitoring model analysis to improve The safety monitoring results on the actual conditions of the feedback effect.