【摘要】 介绍了某中承式钢管混凝土拱桥动载试验的相关内容,包括测点布置、脉动测试、跑车测试、刹车测试以及桥梁结构动力特性评价方法;利用有限元分析软件计算得到桥梁前三阶振型、频率,通过自振频率实测值与理论计算值的对比可知,该桥梁结构刚度良好,有较强的耐冲击性,而且实测结果验证了有限元计算结果。更多还原

【Abstract】 This paper introduced the related contents of dynamic load test for a half-pipe concrete arch bridge,including the measuring-point arrangement,pulsating test,sports car test,breaking test and the evaluation method of bridge structure dynamic characteristics.Using the finite element analysis software,it also calculated the first three vibration mode and frequency of the bridge.Through the contrast between the natural vibration frequency measured value and the theoretical calculation self value,it found that the bridge structure rigidity was good and had strong impact resistance,the experimental results verified the finite element calculation results.更多还原