连续箱梁桥静动力特性及试验研究

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。

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

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.