Based on the previous non-resisting estimation, in this article, a parameter estimation with resistance about uniform distribution is presented.

This paper studies the flexural strength ratio between walls and beams at top floor end joint, and debates the non-cohesive prestressed bars effect on resisting earthquake in the structure.

At the same time, the turn-around ring of the hammer head is made of special composite material, with the qualities of wear-resisting, self - lubricating, non-maintaining, easy changing etc.