By comparing these differences,regulations rationality during design and construction were discussed,and high strength bolts pretension applied methods were introduced such as angle method,torque method,torque-shear bolts method and tension indicator tighten method.

The effect of several geometrical and material parameters,such as the bolt diameter and pretension, friction coefficients, thickness of the angle,are analyzed.

When without bond of shearing,the bottom bolt must be exerted pretension.

Optimal design of cable pre-tensions of the tension truss antenna;

The main parameters considered are height of the cable truss, area of cross section of tensile bar, pre-tension of tensile bar and thickness of glass panel.

The pre-tensioned structures are commonly used in bridge engineering.

As the development of building material industry,some new types of structures have come true,such as prestressed steel structures which have made a rapid progress in recent years.

The analysis and design method of cable-stayed steel truss, prestressed steel truss, cable hold steel truss structures are presented with the Jiuhua space & resort sport center case.

This paper describes in details the principle, the operation and the experience for modifying the down deflection of a fixed-girder for bucket wheel stacker/reclaimer and keeping its pre-designed up deflection by means of firing and pre-tension method.