In this paper,the permissible tensional prestress of the RC beams strengthened with prestressed CFRP is discussed in terms of the tensile strength of concrete,the shear strength of interface between concrete and CFRP,and the tensile strength of CFRP.

Combined with general situations of engineering construction process and technology for prestress stretching of and 13 pedestrian overbridges in Middle-ring Road of Guangzhou university town are introduced in detail.

Low-position spotting & repeat stretching method,a new prestress stretching method,can provide references for construction of similar project.

It introduces the post-tensioning method box beam prefabricating construction technology and applying field,analyses the process control of post-tensioning method box beam pre-stress tension construction,puts forward the related views,and represents the construction process.

Constrution analysis of cable-dome structures pretensioned by different schemes;

Pretension Construction of Safety Shell in Chashma Nuclear Power Plant;

At the same time,installation scheme and pretension scheme were listed,including erection technologies of supporting frames,tension principle and multi-stage tension process.

It is shown that the dual control of prestress tensioning can attain to high accuracy and efficiency by the prestressed robot, and fulfill the demand of practical application in prestressed concrete structures and has wide engineering background and good applying .

The paper introduces some experience and understanding of the quality control of prestressed tensioning construction and concrete quality control taken the construction of Zhonggong Street Interchange Bridge Project in Shenyang City as the example.