【摘要】 本文提出了对运营中的大型桥梁在不影响交通的前提下检验大桥主要结构受力状态及性能的实用方法。重点介绍了斜拉桥与悬索桥索力的振动测量法；桥梁动力特性的测试、桥塔水平位移的激光测量等实验技术；给出了山东东营黄河大桥实测与理论计算的结果。通过对大桥动力特性的检测与分析，掌握了大桥实际工作状态和运营情况，为今后大桥的养护、管理提供了科学依据。本文提出的大桥检验方法经济、实用、方便可行。更多还原

【Abstract】 A practical method that can test the mechanical properties of large bridges under working conditions is presented in this paper. Especially,a method by measuring the dynamic internal forces of thecable-styled bridges and suspension bridges is introduced. Moreover,testing techniques including themeasurement of the dynamic characteristics of bridges and the horizontal displacement of towers bylaser are applied. By appling those methods and techniques, the testing results for the HuangHe riverbridge in dingYing, Shandong province are obtained which well agree with the theoretical analysis.Therefore, it is concluded that the bridge is still in good conditions. These methods have been provedpractical, economical and welcomed by engineers.更多还原