By improving the method for placing rectangle based on placement points, a new way of expression of individual and a new rule of placing rectangle were presented, and then a new simulated annealing algorithm for rectangle placement problems was presented.

Testing purpose,model design principle,testing case,loading program,strain and deformation test point arrangement of the first Zhongshan Bridge test model are introduced in detail.

According to the technical requirement of the well-point layout principle,well-point canal inbuilt,well-point structure construction,it represents well-point precipitation construction technology in detail,brings forward the matters need attention in the well-point system,and does research to the risk measures to the peripheral environment in the controlling well-point precipitation.

First,making use of modal analyses of the tower,taking the non-diagonal elements of MAC matrix as target functions,increasing or decreasing the number of degree of freedom(DOF),the optimal sensor placement of the tower is obtained by choosing the non-diagonal elements of MAC matrix to be the least.

Based on monitoring works on tunnel of Hang-qian highway, the monitoring item selection and sensor placement optimization are discussed in this paper.

This paper presents the design thinking,layout character and technical parameters of the suburban bus LCK6830G3.