2. กำลังและควำมเหนียวที่สูง ก่อร้ำงได้รวดเร็ว
สำมำรถซ่อมแซมได้รวดเร็ว (Resilience)
“The ability of social units to mitigate risk and contain
the effects of disasters, and carry out recovery
activities in ways that minimize social disruption while
also minimizing the effects of future disasters.”
Why Steel EBF?
24. Design Spectrum for Chieng Mai
Soil Type: D
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 0.5 1 1.5 2 2.5 3
T (sec)
Sa(g)
มยผ (1302)
Design Response Spectrum
EQ Force and Natural Period
WSV a
aS
T
28. Periods of translational modes and number of stories
Bangkok Buildings
T = 0.063 N
ข ้อมูล: รศ.ดร นคร ภู่วโรดม Thamasart University
T = 0.063N
1
st
Mode
T = 0.02N
2
nd
Mode
0
1
2
3
4
5
0 10 20 30 40 50 60
Number of Stories N
Period(sec)
30. Magnitude of EQ Forces
Return Period of Design Earthquake in International
Standards
มาตรฐาน มยผ1302 ใช้คาบการเกิด 2475 ปีและลดทอนให้เทียบเคียงกับ 475 ปี
64. Seismic Moment Resisting Frames Welding
Requirement
• Required minimum toughness for weld metal:
– Required CVN for all welds in SLRS:
20 ft.-lbs at 00 F (27J at -18 Celsius)
– Required CVN for Demand Critical welds:
20 ft.-lbs at -200 F and 40 ft.-lbs at 700 F
(54 J at 29 C)
81. Buckling perpendicular
to gusset plate
Line of rotation ("fold
line") when the brace
buckles out-of-plane
(thin direction of plate)
To accommodate brace end rotation: provide "fold line"
Source: AISC
85. Steel EBF Offers Excellent Stiffness and
Ductility
In the Event of Extreme Loading Beyond the
Design Level, Steel Structures can be
Repaired More Quickly
Why Steel EBF?
92. W
R
ITS
V a
)(
Design
Base Shear
Response
Modification
Factor
Spectral
Acceleration
Importance
Factor
Seismic Design Per Thai Standard (DPW1302)
R = 8 For EBF
V
108. W
R
ITS
V a
)(
Design
Base Shear
Response
Modification
Factor
Spectral
Acceleration
Importance
Factor
Seismic Design Per Thai Standard (DPW1302)
R = 8 For EBF
V