The effects of sediment on dynamic pressure acting on rigid dam during vertical ground motion;

Numerical results indicate that the magnitude and frequency content of the vertical ground motions have significant effects on the column ductility demand and pseudo acceleration response.

The characteristics and developments of the recent vertical crustal movement in these areas are studied in this paper.

The paper explains the significance of monitoring to vertical crustal movement in Changbaishan mountain area,discusses necessity of the combination of national geodetic network with regional monitoring.

The establishment of datum is one of the important contents in the research on vertical crustal movement.

Through the analysis of the deduction process of Harmonic Function model, it is illustrated that some hypotheses in the deduction process are unreasonable and the Harmonic Function can not reflect the objective regularity of the vertical crust movement,so that it isn t an effective method to compile isoline map of the vertical crust movement rate.

In this paper,the vertical crust movement of late decade in the North China(the capital circle) is analyzed and the result shows obviously that the North China had been in strain accumulation before Datong earthquake(1989)and has been in strain recovery after the event.

Based on the isostatic theory of crust vertical movement, the mathematical model describing space distribution of crust vertical movement rate is established, and the theory and method of fitting the rate surface of the crust vertical movement with the finite element method are proposed.