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Mega - sub controlled structural system fluid damper applications

Author: LianYeDa
Tutor: ZhangZuoAn
School: Northwestern Polytechnical University
Course: Structural Engineering
Keywords: Mega - sub controlled structural system Mega - sub controlled structural system model Fluid damper Complex modal theory Ground motion random vibration model Fluctuating wind load spectrum Fluctuating wind simulation
CLC: TU352.11
Type: Master's thesis
Year: 2006
Downloads: 52
Quote: 1
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Abstract


With the continued development of seismic technology and theory , a new class of captive tuning force building structure system being in-depth study . The object of this study - mega - sub controlled structural system is one of the important one . To resolve the mega - sub controlled structural system giant collision between the sub- structure and sub- structure acceleration response issues such as excessive energy consumption damper can be installed in huge sub- structure of the top-level . The combination of mega - sub controlled structural system unique layout features , this article first suggested , design a savings longitudinal length can be adjusted to the size of the damping force to effectively solve the the mucus blocking problems caused by oxidation fluid damper , called adjustable fluid damper. And theoretical analysis of the damper , an expression of the relationship between the damping force and speed and intrinsic parameters , and the damping force speed curve with the number of orifice relationship is discussed in detail . The following conclusions: the fewer the number of orifice damping force - velocity curve slope , the smaller the contrary . Proved the effectiveness of the adjustable fluid damper adjustable . Finally, fluctuating wind and earthquake force mega - sub controlled structural system in response to the situation before and after the installation adjustable fluid damper comparative analysis , law research damper on the impact of the new structure of the system . The conclusion is: external dynamic action , fluid damper to the mega - sub controlled structural system damping value is not the bigger the better , but there is the optimization value ; reasonable selection of additional damping values ??will not change the giant - child - owned controlled structural system tuning force characteristics : additional damping giant - sub controlled structural system dynamic response further reduced, especially in the sub- structure acceleration response control most obvious . Mega - sub controlled structural system , excellent self- damping function and damper given the important role of the structure .

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CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure > Seismic structure
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