Some Discussion Related to Viscous Dampers Application in the Actual Project

Transcription

1 Vol. 36 No. 3 Jun DOI /j. issn TU TU A Some Discussion Related to Viscous Dampers Application in the Actual Project Chen Yong-qi Ma Liang-zhe Beijing Qitai Shock Control and Scientific Development Co. Ltd Beijing China Abstract The liquid viscous dampers used in large civil projects are the high technology products it has been developed from filling putty or setting valves and accumulator vibration control products to the third generation products which can be calculated precisely and performed stably fluidic damper. In this paper the features of the third generation dampers which have been introduced several times are presented and the understanding and development in these years are summarized. It will helpful to the related technology staff to figure out the equality of damper. For the high-rise buildings the dampers should meet the demands from wind and earthquake so the developing status are introduced. Keywords viscous damper putty valve accumulator fluidic damper qitai@ bluelakeint. com 1 TMD ~ Vol. 36 No

2 Jarret Fig. 3 Hysteretic curve of Jarret damper Putty Fig. 1 Elastic putty working principle 2 Jarret 3 1 ~ Jarret Fig. 2 Construction and cover diagram of Jarret damper Colebrand Device Jarret Jarret 2005 Endinine Jarret Ⅰ Ⅲ 2005 Jun. 2014

3 Jarret Valve 2 Jarret 6 4 Colebrand Device Fig. 4 Colebrand Device leaking in high-speed rail of Korea Fig. 6 Damper with outside accumulator Flow Control Valve Pressure Control Valve ~ Fig. 5 Construction of oil damper with pressure relief valve Jarrett-Enidine Pressure Relief Vol. 36 No

4 Bernoulli 2 9 HITEC ~ HITEC HITEC 3 Robust HITEC F = CV α 0. 3 ~ Fig. 7 Construction of fluidic damper with and without circuit ~ Jun. 2014

5 ± 10in /s Fig. 8 Relation of peak force and peak velocity ± 10in /s 100MPa C = 290kips /in kN s /m 0. 2in /s 5. 1mm / s C = 234kips /in kN s /m 0. 6in /s 15. 3mm /s kip kN ± 0. 8in /s Fig. 9 Relation of peak force and peak velocity ± 0. 8in /s 9 ± 0. 2 in /s 5. 1mm /s - C = 290kips /in 150kips /in kn s /m α = ± 10in /s ± 255mm /s in /s San Diego Courthouse C 9 C C = /0. 2 = 259kips /in in /s mm /s 0. 10in / - s 2. 55mm /s 0. 02mm /s 2 ~ 3m /s 9 8 ± 0. 8in /s ± 20. 4mm /s Vol. 36 No

6 Table 1 1 Data in low velocity test in /s kip C kips /in 1 ~ /0. 1 = /0. 15 = /0. 16 = /0. 17 = min 2 10s Table 2 min Continuous test amplitude 0 ~ kw 100 ~ ~ TMD 110 ~ ~ % 7s Hz 180min u = u 0 sinωt W D = F D du = 2π/ω 0 C u 1 +α dt = λcω α u 1 +α 0 1 Γ α λ = 4 2 α 2 2 Γ 2 + α Γ C ω ~ 2 HITEC α u ~ 0. 3 P D = W D f 3 f Pinnacle Marina Tower Jun. 2014

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