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GEO5

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Seismic Fortification Intensity according to Chinese Standards

There are three main options for seismic fortification intensity according to the Chinese standards. Horizontal seismic acceleration coefficient Kh and seismic angle θ are determined according to what option is selected for seismic fortification intensity.

  • 7 degrees (0.1g), 7 degrees (0.15g), 8 degrees (0.2g), 8 degrees (0.3g), 9 degrees (0.4g): Kh and seismic angel s are determined according to corresponding seismic fortification intensity based on standards.
  • user-defined - input Kh: Kh is input by the user and θ is determined by (Art. 4.9.1 from SL 203-97)

  • user-defined - input Kh, θ: Kh and θ are both input by the user.

Note: Third option is only valid for JTJ 004-89 and JTS 146-2012.

Values of Kh and θ according to corresponding seismic fortification intensity are given by the following tables:

For JTJ 004-89 (Tbl. 1.0.7 and Tbl. 3.1.6 from JTJ 004-89)

Seismic fortification intensity

7 degree

8 degree

9 degree

Coefficient of horizontal seismic acceleration Kh

0.10

0.15

0.20

0.30

0.40

Seismic angel θ

1.5°

2.3°

3.0°

4.5°

6.0°

Note: 7 degree (0.15g) and 8 degree (0.30g) are not from JTJ 004-89, because there are no value for these two situations in JTJ 004-89. They are from JTS 146-2012.

For JTS 146-2012 (Tbl. 5.3.1 from JTS 146-2012)

Seismic fortification intensity

7 degree

8 degree

9 degree

Coefficient of horizontal seismic acceleration Kh

0.10

0.15

0.20

0.30

0.40

Seismic angel θ

1.5°

2.3°

3.0°

4.5°

6.0°

For SL 203-97 (Tbl. 4.3.1 from SL 203-97)

Seismic fortification intensity

7 degree

8 degree

9 degree

Coefficient of horizontal seismic acceleration Kh

0.10

0.15

0.20

0.30

0.40

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