According to the plastic condition of arched bridge structure during the development of four-hinged failure, its lateral deflection stabilizing condition that in longitudinal direction was studied.

The results showed that: both two maximal deflections were at the middle point of end span;cracks both appeared in the abutment firstly,then the scope of the crack expanded with the temperature elevating,at last the crack changed into the destroy hinge at the ends of negative moment reinforcement,but .

With the four-parameter failure criterion presented in this paper, the influences are eliminated of the basic postulations of the Hooke law and the plain stress on the finite element calculation.

Effect of Heterogeneity of Pillars and Surrounding Rock on Failure Process of Mined-Out Area;

Failure types and repair method of roller press surface;

The Causes and Countermeasures of the Mining Hole Failure in Soft and Broken Ore Body;

Pipeline acoustic propagation features and recognition of typical damage sounds;

The reasons and measures for the catalytic cracking settling vessel regeneration standpipe damage;

Inhomogeneous damage characteristics of surface structure under heavy load;