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Analysis of Dynamic Behavior of Planar Main Frame System

Author: SongMeiZhen
Tutor: WuZhenYu
School: Harbin Institute of Technology
Course: Structural Engineering
Keywords: The main frame system Common framework Dynamic performance Dynamic analysis
CLC: TU311.3
Type: Master's thesis
Year: 2008
Downloads: 21
Quote: 0
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Abstract


In the 1994 Northridge earthquake and the 1995 Kobe earthquake , many steel frame is rigidly connected nodes brittle failure . After the earthquake , a lot of plastic rotation capacity is strong , can withstand the new node rare earthquake research . From start to reduce the structure just pick the number of nodes , a new frame structure system ( main frame system ) . System of the main frame , hinged frame only vertical loads ; just pick the framework of all horizontal loads , but also bear in addition to vertical loads . As part of the beam-column joints is hinged to the main frame system can reduce the difficulty of construction , speed up the construction progress and reduce structural cost , has a better economic efficiency . And hinged frame column mainly by the axial force , high material utilization . This paper studies the dynamic performance of the main frame system . APDL parametric programming language to write this article using the command stream , the establishment of a 15-story , flat- analysis model of the 30-storey main frame system and framework ; modal analysis of structures more earthquake frequencies and mode shapes of the extracted structure ; the flexibility of elastoplastic time history analysis and rare earthquake analysis, main frame system with common framework layer between sway sway floors , top floor acceleration reaction as well as the underlying shear comparison ; and the rare earthquake force calculation, internal force structure in order to extract and view the distribution of plastic hinge . Analyzed : the main frame system hinged frame. , Just pick the framework of the internal forces larger . Small the hinged frame cross-section in the main frame system appropriate to reduce the impact of the dynamic performance of the overall structure . Main frame system taking into account the lateral force resisting stiffness poor , the increase in the main frame system access framework support , and support the formation of the main frame system . Modal analysis support the main system to extract structural frequencies and mode shapes ; multi earthquake elastic elastoplastic process analysis and rare earthquake time history analysis of the main support frame system with ordinary the seismic response of the frame .

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CLC: > Industrial Technology > Building Science > Building structure > Structure theory to calculate > Structural Mechanics > Structural Dynamics
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