Abstract
According to the ideas of the beam string structure, to stress structure is put forward, this is a very flexible cable for joined the rigid grid and support. This is the grid string branch structure. String branch established grid computing model. Static and dynamic characteristics of structure, it shows the different prestressing is analyzed. Through the analysis of structure displacement and internal force of the rod is according to the prestressing value obviously improved. Prestress value is larger, the structure displacement and internal force of the lever is low. The characteristic of structural natural vibration almost no change, although prestress value is changing. When the structure analysis, the structural vibration response curve conforms to the general law. Node displacement response and lower chord node block effect did not happen.
Highlights
Topics in prestressed steel structure research about 60 years
Beam string structure type is a kind of space systems, it is according to the development of plane beam string
String on the static characteristics of the branch structure, it is made of different prestress value behavior were studied
Summary
Topics in prestressed steel structure research about 60 years . Compared with non - prestressed steel structure, saves materials and steel consumption can be reduced by using prestressed [1].Consumption and use different types of prestressed steel structure material is different. Different types of prestressed steel structure including traditional type, suspension type, stretching integral type, beam string structure type, cable and membrane type, glass curtain wall type string. The reinforcement structure is made up of intermediate support, formed by reinforcement of prestressed cable and pillar. A form of prestressed steel structure reinforcement., lower chord connecting by struts on members of the rigid and flexible. According to the ideas of the beam string structure, to support its compressive stress structure put forward the continuous tensile and compression components. It is a string (2, 3, 4) branch structure. Is a comprehensive and general finite element analysis tool ANSYS software
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