Research on hysteretic behavior of prefabricated special truss moment frame fabricated with high-strength steel
In order to study the seismic performance of prefabricated special truss moment frame fabricated with high-strength steel(HSS-PSTMF)and expand its engineering applications,the HSS-PSTMF models were established using ABAQUS finite element software for different energy dissipation section lengths and number of internodes.The numerical analysis was conducted on the hysteresis performance of prefabricated special truss moment frame fabricated with high-strength steel.The influences of the length of energy dissipation section,the number of internodes,and the length-to-depth ratio on the structural bearing capacity,stiffness,ductility,and energy dissipation capacity were studied.The results show that in special truss moment frame(STMF)system,seismic energy is mainly dissipated through energy dissipation sections.Changing the length of energy dissipation section has a significant impact on the bearing capacity,ductility,stiffness,and energy dissipation capacity of structure.When the length of energy dissipation section is constant,changing the number of internodes has a relatively small impact on the structural bearing capacity,ductility,and energy dissipation capacity.The seismic performance of structure is better when the length of the energy dissipation section is between 0.2L-0.4L(L is span)and the length-to-depth ratio of any internodes of energy dissipation section is between 0.67-1.5.When the length of energy dissipation section ranges from 0.4L to 0.5L,the length-to-depth ratio of structure can be increased to 3 while meeting the safety requirements of structure.
prefabricated special truss moment frame fabricated with high-strength steelbearing capacityhysteresis performancelength of energy dissipation section
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