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针对位移反分析正算法和反算法的优缺点，从区域分裂法的基本原理出发，对构造正、反耦合位移反分析算法进行了初步研究，从理论上证明了将两种算法的优点结合起来而构造新算法是可行的．
Aiming at the advantages and disadvantages of the positive and negative methods of Displacement Back Analysis, and based on the basic principle of the region splitting method, a preliminary study on the algorithm of constructing positive and negative coupling displacement back analysis is carried out. It is theoretically proved that combining the advantages of the two algorithms It is feasible to construct a new algorithm.