断层场地地震动分析
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摘要
本文根据断层岩性、倾角、破碎带宽度和隐伏断裂上部覆盖层厚度等因素的变化，密切结合断层及其附近的地形地貌、上层剖面以及基岩面的起伏变化特点建立断层场地模型，并以合成人工地震动作为输入，对这些模型进行了二维地震分析计算，给出了各模型输出点地震动时程和反应谱．对计算结果进行了综合对比分析，取得了若干认识。此外，用宏观震害经验检验了本文方法的可行性和计算结果的可靠性。
The models of near-fault site are established by considering the factors, such as fault dip. width of fault trace, thickness of covering layer on concealed fault. In addition, other factors, such as topographic feature near fault and bedrock relief etc., are also taken into account. After inputting the artifical seismic wave, the site effect and earthquake response of soil layers are analyzed by 2-dimensional wave motion model and the ground motion history and response spectrum of soil sites are given. After checking the different models and comparing with the history earthquake damage. the results are proved to be valid, reliable and helpful for aseismic design.
The models of near-fault site are established by considering the factors, such as fault dip. width of fault trace, thickness of covering layer on concealed fault. In addition, other factors, such as topographic feature near fault and bedrock relief etc., are also taken into account. After inputting the artifical seismic wave, the site effect and earthquake response of soil layers are analyzed by 2-dimensional wave motion model and the ground motion history and response spectrum of soil sites are given. After checking the different models and comparing with the history earthquake damage. the results are proved to be valid, reliable and helpful for aseismic design.
引文
[1] Mustafa Erdik and Eser Durukal. Assessment of Design Basis Earthquake Ground Motion for Near- Fault Conditions[A].12WCEE[C]. 2000.
[2]Babak Alavi and Helmut Krawinkler. Consideration of Near-Fault Ground Motion Effects in Seismic Design[A]. 12WCEE[C]. 2000.
[3]Boore D.M. and Zoback M.D.. Near-Field Motions from Kinematic Models of Propagating Faults[J]. BSSA. Vol.64. No.2:321 -342.
[4]Arben Pitarka. Kojiro Irikura. Tomotaka Iwata and Haruko Sskiguchi. Three-Dimensional Simulation of the Near-Fault Ground Motion for the 1995 Hyogo - Ken Nanbu(Kobe). Japan. Earthquake[J]. BSSA. Vol.88. No.2: 428 -440.
[5]Toshihiro TSUBOI and Fusanori MIURA. Simulation of Near Field Seismic Ground Motions by FEM Considering Source Rupture Mechanism[A]. 12WCEE[C]. 2000.
[6]胡聿贤.孙平善等.场地条件对震害与地震动的影响[J].地震工程与工程振动.试刊1期1980
[7] Robert L. Wiegel. Earthquake Engineering[M]. Prentice - Hall. Inc. 1970.
[8]地面运动组 海城地震震害[M].地震出版社,1979
[9]孙平善等.澜沧、耿马地震震害分布与场地影响[A]澜沧耿马地震震言论文集[C].科学出版社.1991
[10]孙平善.强震地面破裂预测的宏观经验[A].全国第四届地震工程会议论文集[C].1994
[11]杨柏坡,孙平善.基岩面剧变场地的地震地面运动[A]全国第五届地震工程会论文集[C].1998
[2]Babak Alavi and Helmut Krawinkler. Consideration of Near-Fault Ground Motion Effects in Seismic Design[A]. 12WCEE[C]. 2000.
[3]Boore D.M. and Zoback M.D.. Near-Field Motions from Kinematic Models of Propagating Faults[J]. BSSA. Vol.64. No.2:321 -342.
[4]Arben Pitarka. Kojiro Irikura. Tomotaka Iwata and Haruko Sskiguchi. Three-Dimensional Simulation of the Near-Fault Ground Motion for the 1995 Hyogo - Ken Nanbu(Kobe). Japan. Earthquake[J]. BSSA. Vol.88. No.2: 428 -440.
[5]Toshihiro TSUBOI and Fusanori MIURA. Simulation of Near Field Seismic Ground Motions by FEM Considering Source Rupture Mechanism[A]. 12WCEE[C]. 2000.
[6]胡聿贤.孙平善等.场地条件对震害与地震动的影响[J].地震工程与工程振动.试刊1期1980
[7] Robert L. Wiegel. Earthquake Engineering[M]. Prentice - Hall. Inc. 1970.
[8]地面运动组 海城地震震害[M].地震出版社,1979
[9]孙平善等.澜沧、耿马地震震害分布与场地影响[A]澜沧耿马地震震言论文集[C].科学出版社.1991
[10]孙平善.强震地面破裂预测的宏观经验[A].全国第四届地震工程会议论文集[C].1994
[11]杨柏坡,孙平善.基岩面剧变场地的地震地面运动[A]全国第五届地震工程会论文集[C].1998
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