This paper introduces the on-line adjustment principle and the process of safety valve adjustment,application of on-line adjustment device in safety valve adjustment of boiler in power station.

In order to overcome the drawback of the generalized predictive control(GPC) in the parameters tuning,a new GPC based on the design of double softness parameters is presented by using BP neural networks,in which the on-line tuning of the input softness parameter and the output one is achieved.

Contents of earthquake force calculation,design requirements in the beam and column section of frame structure and structural internal force adjustment are changed in new“Building Anti-seismic Design Standards"and“Technique Regulations of Tall Building Concrete Structure".

Changing boundary conditions and imposing compulsory displacements on some nodes were applied to simulate system transformation and internal force adjustment respectively.