Dynamic Response of a Combined Isolation Based Mega-Substructure under Bidirectional Near-Fault Ground Motions
Table 3
Test cases.
No.
Test cases
Input earthquake
Input direction
Input peak (g)
Instructions
1
B0
White noise
X, Y
\
\
2
S1
Chi-Chi-2N
Y
0.056 g
7-degree frequent earthquake
3
S2
Chi-Chi-2F
Y
0.056 g
7-degree frequent earthquake
4
B1
Chi-Chi-2N
X + Y
0.051 g + 0.056 g
7-degree frequent earthquake
5
B2
Chi-Chi-2F
X + Y
0.051 g + 0.056 g
7-degree frequent earthquake
6
S3
Chi-Chi-2N
Y
0.153 g
7-degree design earthquake
7
S4
Chi-Chi-2F
Y
0.153 g
7-degree design earthquake
8
S5
Chi-Chi-3N
Y
0.153 g
7-degree design earthquake
9
B3
Chi-Chi-2N
X + Y
0.140 g + 0.153 g
7-degree design earthquake
10
B4
Chi-Chi-2F
X + Y
0.139 g + 0.153 g
7-degree design earthquake
11
B5
Chi-Chi-3N
X + Y
0.113 g + 0.153 g
7-degree design earthquake
12
S6
Chi-Chi-2N
Y
0.316 g
7-degrees of rare earthquake
13
S7
Chi-Chi-2F
Y
0.316 g
7-degrees of rare earthquake
14
S8
Chi-Chi-3N
Y
0.316 g
7-degree rare earthquake
15
B6
Chi-Chi-2N
X + Y
0.289 g + 0.316 g
7-degree rare earthquake
16
B7
Chi-Chi-2F
X + Y
0.288 g + 0.316 g
7-degree rare earthquake
17
B8
Chi-Chi-3N
X + Y
0.297 g + 0.316 g
7-degree rare earthquake
Note. The W-E component of Chi-Chi ground motions was used for single-directional inputs. The N-S and W-E components of Chi-Chi ground motions were inputs for the X-direction and Y-direction, respectively, during bidirectional tests. For the test cases, “S” represents single-directional input and “B” represents bidirectional input.
