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Bending-resistant ductile truss frame
The invention provides a bending-resistant ductile truss frame, and belongs to the field of earthquake proofing of building structures. According to the technical scheme, the bending-resistant ductile truss frame is that a yielding energy dissipating rod is arranged at the span of a bending moment infection point of the truss under the vertical load effect; two ends of the yielding energy dissipating rod are respectively hinged to adjacent lower chord members; the bearing capacity of the yielding energy dissipating rod is less than that of the lower chord members, so that the yielding energy dissipating rod can be yielded earlier than the lower chord members under earthquake; the yielding energy dissipating rod is mounted after the vertical load is loaded. The equivalent damping ratio of the bending-resistant ductile truss frame under fortification and rare occurrence earthquake is obviously increased and more than that of the common truss frame, the shearing force of the base and interlayer displacement are obviously less than those of the common truss frame, and the energy dissipating effect and earthquake absorption effect are obvious; compared with the common truss frame, a frame column of the bending-resistant ductile truss frame is difficultly avoided plastic hinge, so that the strong column and weak beam yielding mechanism is easily achieved, and as a result, the ductility of the structure is improved, and the preset earthquake proofing performance target is achieved.
Bending-resistant ductile truss frame
The invention provides a bending-resistant ductile truss frame, and belongs to the field of earthquake proofing of building structures. According to the technical scheme, the bending-resistant ductile truss frame is that a yielding energy dissipating rod is arranged at the span of a bending moment infection point of the truss under the vertical load effect; two ends of the yielding energy dissipating rod are respectively hinged to adjacent lower chord members; the bearing capacity of the yielding energy dissipating rod is less than that of the lower chord members, so that the yielding energy dissipating rod can be yielded earlier than the lower chord members under earthquake; the yielding energy dissipating rod is mounted after the vertical load is loaded. The equivalent damping ratio of the bending-resistant ductile truss frame under fortification and rare occurrence earthquake is obviously increased and more than that of the common truss frame, the shearing force of the base and interlayer displacement are obviously less than those of the common truss frame, and the energy dissipating effect and earthquake absorption effect are obvious; compared with the common truss frame, a frame column of the bending-resistant ductile truss frame is difficultly avoided plastic hinge, so that the strong column and weak beam yielding mechanism is easily achieved, and as a result, the ductility of the structure is improved, and the preset earthquake proofing performance target is achieved.
Bending-resistant ductile truss frame
HUANG YONGQIANG (author) / BAO LIANJIN (author) / SHI WEI (author)
2015-04-22
Patent
Electronic Resource
English
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
Ductile Truss Moment Frames: A Novel Seismic Resistant System
| British Library Conference Proceedings | 1997
Truss Moment Frames for Ductile Behavior
| British Library Conference Proceedings | 1995