Effects of hanging wall/footwall fault parameters on seismic responses of RC frame structures (II: isolated structures)

PDF(1127 KB)

Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (5) : 20-27.

WANG Dayang, ZHANG Yongshan, TANG Chengzhi, HAN Qihao

Author information +

History +

Abstract

Seismic isolation designs for four RC frame structures with different heights were conducted with Etabs platform to investigate effects of hanging wall/footwall fault parameters on dynamic responses of the isolated RC structures. The rationality of seismic isolation design models for the four buildings was verified from three aspects including wind resistance performance of isolation layer, eccentricity and compressive stress of isolation bearing. Based on the verified isolated structure models, effects of fault parameters, such as, earthquake magnitude, soil body shear wave velocity, fault dip angle and upper bound embedded depth on structural dynamic responses were investigated in detail under the action of 160 hanging wall/footwall earthquake samples. The results showed that the control effect of the isolated structures under hanging wall earthquakes is better than that under footwall earthquakes; the structural vibration reduction coefficient in horizontal direction and displacement of isolation layer are basically unchanged with variation of footwall site distance, while they have a concave shape changing tendency with variation of hanging wall site distance; the seismic isolation effect is the best within footwall site distance range of 20km~30km; the control effect of the isolated structures decreases with increase in earthquake magnitude and structural height and increases with increase in soil body shear wave velocity; the control effect keeps unchanged under footwall earthquakes and decreases under hanging wall earthquakes with increase in fault dip angle and upper bound embedded depth.

Key words

hanging wall/footwall earthquake / fault parameters / isolation / frame structure / dynamic response

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WANG Dayang, ZHANG Yongshan, TANG Chengzhi, HAN Qihao. Effects of hanging wall/footwall fault parameters on seismic responses of RC frame structures (II: isolated structures)[J]. Journal of Vibration and Shock, 2018, 37(5): 20-27

References

[1] 张社荣, 王宽, 王高辉, 谭尧升. 近断层地震动方向性效应对混凝土重力坝累积损伤特性的影响[J]. 地震工程与工程振动, 2014, 34(1): 44-54.
Zhang Sherong, Wang Kuan, Wang Gaohui, Tan Raoping. Effects of the directivity of near fault ground motions on accumulated damage of concrete gravity dams[J]. Earthquake Engineering and Engineering Dynamics, 2014, 34(1): 44-54.
[2] 宋健, 高广运. 近断层速度脉冲地震动对边坡滑移的影响分析[J]. 岩石力学与工程学报, 2014, 33(2): 317-326.
Song Jian, Gao Guangyun. Sliding displacements of slopes under near-fault pulse-like ground motions[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(2): 317-326.
[3] 江辉, 李新乐, 窦慧娟. 近断层长周期脉冲型地震动对竖向反应谱的影响研究[J]. 振动与冲击, 2012, 31(6): 56-61.
Jiang Hui, Li Xinle, Du HUijuan. Influence of near-fault long-period pulse-type earthquake ground motions on vertical response spectra[J]. Journal of Vibration Shock, 2012, 31(6): 56-61.
[4] Ming Lu, Xiao Jun Li, Xiao Wen An, et al. A preliminary study on the near- source strong-motion characteristics of the great 2008 Wenchuan earthquake in China[J]. Bulletin of the Seismological Society of America, 2010, 100(5B): 2491-2507.
[5] 谢俊举, 温增平, 等. 2008年汶川地震近断层竖向与水平向地震动特征[J]. 地球物理学报, 2010, 53(8): 1796-1805.
Xie Junxiang, Wen Zengping, etc. Characteristics of near-fault vertical and horizontal ground motion from the 2008 Wenchuan earthquake[J]. Chinese Journal of Geophysics, 2010, 53(8): 1796-1805.
[6] 周正华, 周雍年, 等. 竖向地震动特征研究[J]. 地震工程与工程振动, 2003, 23(3): 25-29.
Zhou Zhenghua, Zhou Yongnian, etc. Study on characteristics of vertical ground motion[J]. Earthquake Engineering and Engineering Dynamics, 2003, 23(3): 25-29.
[7] Yousef Bozorgnia, Kenneth W Campbell. The vertical-to-horizontal response spectral ratio and tentative procedures for developing simplified V/H and vertical design spectra [J]. Journal of Earthquake Engineering, 2004, 8(2): 175-207.
[8] Abrahamson N A, Somerville P G. Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake[J]. Bulletin of the Seismological Society of America, 1986(1B): S93-S99.
[9] 李爽, 谢礼立, 郝敏. 上盘效应对工程结构位移反应影响分析[J]. 西安建筑科技大学学报, 2006, 38(6): 823-827.
Li Shuang, Xie Lili, Hao Min. A study on the displacement response of structures due to hanging wall effects[J]. Journal of Xi’an University of Arch. & Tech., 2006, 38(6): 823-827.
[10] 火明譞, 赵亚敏, 陆鸣. 近断层地震作用隔震结构研究现状综述[J]. 世界地震工程, 2012, 28(3): 161-170.
Huo Minghuan, Zhao Yamin, Lu Ming. Research progress in base-isolated structures subjected to near-fault ground motions[J]. World Earthquake Engineering, 2012, 28(3): 161-170.
[11] Heaton T H, Hall J F, Wald D J, etc. Response of high-rise and base isolated buildings to a hypothetieal MW>7.0 blind thrust earthquake[J]. Science, 1995, 267(5195): 206-211.
[12] 杨迪雄, 李刚, 程耿东. 近断层脉冲型地震动作用下隔震结构地震反应分析[J]. 地震工程与工程振动, 2005, 25(2): 119-124.
Yang Dixiong, Li Gang, Chen Gengdong. Seismic analysis of base-isolated structures subjected to near-fault pulse-like ground motions[J]. Earthquake Engineering and Engineering Dynamics, 2005, 25(2): 119-124.
[13] 杨迪雄, 王汉兵, 李刚. 近断层地震动对短肢剪力墙高层结构地震反应的影响[J]. 地震工程与工程振动. 2008, 28(6):106-115.
Yang Dixiong, Wang Hanbing, Li Gang. Influence of near-fault ground motions on seismic responses of high rise structure with short-limb walls[J]. Earthquake Engineering and Engineering Dynamics, 2008, 28(6):106-115.
[14] Abrahamson N A, Somerville P G. Effects of the Hanging Wall and Footwall on Ground Motions Recorded during the Northridge Earthquake[J]. Bulletin of the Seismological Society of America, 1996, (1B):S93-S99.
[15] 傅金华. 日本抗震结构及隔震结构的设计方法[M]. 中国建筑工业出版社, 2011.
Fu Jinhua. The design method of earthquake resistant structure and isolation structure in Japan[M]. China Architectures & Building Press, 2011.
[16] 汪闻韶. 土工地震减灾工程中的一个重要参量——剪切波速[J]. 水利学报, 1994, (3): 80-84.
Wang Wenshao. An important parameter in geotechnical engineering for earthquake disaster mitigation—shear wave velocity[J]. Journal of Hydraulic Engineering, 1994, (3): 80-84.
[17] 王栋, 谢礼立. 断层倾角对上/下盘效应的影响[J]. 地震工程与工程振动, 2007, 27(5): 1-6.
Wang Dong, Xie Lili. The influence of the fault dip angle on the hanging wall/footwall wall effect[J]. Journal of Earthquake Engineering and Engineering Vibration, 2007, 27(5): 1-6.
[18] 王栋. 断层倾角对近断层地震动特性的影响[D]. 哈尔滨: 中国地震局工程力学研究所, 2006.
Wang Dong. The effects of the fault dip on the characteristics of the near-fault ground motion[D]. Harbin: Institute of Engineering Mechanics, China Earthquake Administration, 2006.