The Research On The Seismic Behavior For The Longitudinal Energy-Dissipation Braced Frame Structures Of The Large Capacity Power Plants

Adopting the longitudinal seismic braced frame structures of the power factory as a experimental prototype, and based on the pseudo-static model test and the analysis of the static elastic-plastic finite element method, this paper introduces the seismic behavior of the longitudinal energy-dissipation braced or seismic braced frame structure systems of the power factory. The main contents of the report is listed as follow: (1) The deformation ability, energy-dissipation ability and corresponding restoring force constitutive relations of the lead extrusion dampers are analysised. (2) The whole failure process, the seismic failure mechanism, the internal forces properties and the corresponding laws for the distribution and transfer of internal forces of the longitudinal energy-dissipation braced or seismic braced frame structure systems under seismic action are investigated. (3) The weak parts of the longitudinal energy-dissipation braced or seismic braced frame structure systems under seismic action are judged. (4) The interacting behavior as well as the pattern for the allocation of the seismic action between the frame and energy-dissipation braced or seismic braced are uncovered. (5) The properties of the integral deformation and the member' local deformation are approached. (6) The load-carrying capacity, ductility, the hysteretic behavior and the distribution pattern of the energy-dissipate capacity between the frame and the energy-dissipation or seismic braced of the longitudinal energy-dissipation or seismic braced frame structures are researched. (7) The optimize design of the longitudinal energy-dissipation or seismic braced frame structures is introduced. (8) The seismic load-carrying capacity and deformation ability of the prototype structure of the large capacity power plants are studied. (9) The seismic design method and the earthquake resistant constructional measure of the longitudinal energy-dissipation or seismic braced frame structure are put forward. (10) Through the compare of seismic behavior between the reinforced concrete longitudinal energy- dissipation braced frame structure and the common frame structure, some new theory and methods of seismic design are put forward, many new conclusion and concept are gained, as well as the corresponding basis of theory and experiment for revising the code for seismic design of building is given.