多跨变载连续梁的减缩自由度动力计算

对多跨变载荷梁采用减缩自由度的精细时程算法进行计算，其结果可作为实际复杂工程结构设计的理论参考依据。采用减缩自由度精细积分求解多跨连续梁的动力响应结果与用精细时程积分法计算的结果相比差别很小，所求动力响应结果的精度是可以满足一定条件下的工程设计要求的。

Dynamic Computation of Reduced Degree of Freedom forMulti-span Continuous Beam With Changing Load

The precise time-integration method has a high computational accuracy and has obtained a successful application in the computational structural dynamics. Using the algorithm with reduced integration to compute the multi-span continuous beam, the computational results can be regarded as a theoretical reference for the practical engineering design with complicated structures. The numerical simulation was processed by using the precise time-integration method with the reduced order integration, and the computing precision is close to the precision without the reduced order integration. The results are satisfactory to solve the dynamic response of a multi-span continuous beam under the condition of the special engineering background.