连续箱梁桥静动力特性及试验研究

Static and Dynamic Behavior of Continuous Box Girder Bridge and Its Experimental Investigation

桥梁的静动力特性是评价桥梁运营承载能力的重要内容之一。本文通过对1座典型的三跨变截面预应力混凝土单箱双室连续梁桥的计算分析,并把成桥静动载试验结果与理论计算值进行了比较,给出了其在荷载作用下的静动力特性及实际工作状态。

The static and dynamic behavior is one of the most important issues in the assessment of the carrying capacity of a bridge.The computation and analysis of a three spans P.C.continuous box girder bridge with single-box-double-cells and varying depth are completed.The results obtained by the static and dynamic field experimental testing under the completion state are compared with the theoretical calculated values.There is a good agreement.The static and dynamic behavior and actual service state of the bridge under the design loads are given.Numerical results and experimental investigation indicate that the bridge has a good elastic service state and meets with the standard of bridge design code under the regular loads.