A Site-Specific Response Analysis: A Case Study in Hanoi, Vietnam

被引:15
|
作者
Van-Quang Nguyen [1 ,2 ]
Aaqib, Muhammad [1 ]
Duy-Duan Nguyen [2 ,3 ]
Nguyen-Vu Luat [4 ,5 ]
Duhee Park [1 ]
机构
[1] Hanyang Univ, Dept Civil & Environm Engn, Seoul 04763, South Korea
[2] Vinh Univ, Dept Civil Engn, Vinh 461010, Vietnam
[3] Konkuk Univ, Dept Civil Engn, Seoul 05029, South Korea
[4] Sejong Univ, Dept Architectural Engn, Seoul 05006, South Korea
[5] Thuyloi Univ, Dept Civil Engn, 175 Tay Son, Hanoi 115000, Vietnam
来源
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 11期
基金
新加坡国家研究基金会;
关键词
earthquake; seismic; design response spectrum; one-dimensional site response analysis; nonlinear approach; equivalent linear approach; EARTHQUAKE; CITY;
D O I
10.3390/app10113972
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of one-dimensional (1-D) site response analyses were performed using the nonlinear (NL) and equivalent linear (EQL) approaches to assess the applicability of the Vietnamese earthquake-resistance design code TCVN 9386: 2012. Six soil profiles were selected from three districts in Hanoi (Vietnam). A number of ground motions compatible with the rock design spectrum were used as input for carrying out analyses. The results highlight that the calculated response is higher than the design spectrum for site class C and lower for site class D. The normalized response spectra of the EQL approach results are higher than those of the NL approach. Moreover, the peak ground accelerations at the surface from EQL analyses are greater than those of the NL method because the latter generates a higher amount of nonlinearity. The results from the NL approach also illustrate that the deamplification phenomenon occurs in the soft soils of the Hanoi region (e.g., soil profile P3 and P5 of site class D). Additionally, the shear strains calculated from the NL method are closely matched with those from the EQL method, the difference between them increasing with a decrease in soil stiffness.
引用
收藏
页数:13
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