[12-11 17:00:46] 来源:http://www.tmgc8.com 桥梁工程 阅读:3201次
四、结论与展望
(l)由于大跨桥梁受环境因素影响较大,安全系数低,必须对其进行连续实时监测。
(2)由于GPS定位精度高,速度快,同其他几种位移监测仪器相比具有明显的优点,可用它对大跨度桥梁做连续实时监测,同时应进一步提高其精度,从而扩展其应用范围。目前GPS已在虎门大桥安装成功,实现了对大桥连续实时监测。
(3)在系统识别方面,比较了时域和频域法的优劣,今后应进行结合时频的系统识别研究。
(4)在模型修正方面,应在基于敏感性分析的基础上,研究适合于大跨桥梁的模型修正方法。
(5)由于对桥梁缺损状态的评价缺乏统一有效的指标,应结合实验测试和有限元建模研究适合于大跨桥梁的指纹指标。
参考文献
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