In order to overcome defects of slow convergence speed and being easy to fall into local optimum of monkey algorithm

a chaotic monkey algorithm to solve problem of optimal placement of bridge sensor is proposed by introducing chaos search strategy.This algorithm generates initial monkeys by using chaos variable and increases the diversity of monkeys by adding some disturbance to improve global search capability.The chaotic monkey algorithm is applied in a pair of suspension bridge to carry out optimal sensor placement

the results verify that the chaotic algorithm can solve the problem and has better search capability when compared with monkey algorithm.