EFFECTS OF EARTHQUAKE AND WIND LOADS ON LOW-RISE BUILDINGS

This paper aims to study the effects of earthquake and wind
loads on low-rise buildings that represent the most popular ones
for many constructions, especially housing projects. The study can
be divided into 2 parts. The first part presented the analysis results
of the one, two, and three-storey sample buildings. The buildings
are assumed to be in a high seismic area (Phrae, Thailand) with a ground response acceleration value of 0.2 sec. at 1.086g. The
structural behavior, base shear, and shear force of vertical
structural members are studied and compared by using the
equivalent static analysis, modal response spectrum analysis,
wind load from Building Control Act, B.E. 2522, and wind load by
DPT 1311-50 standard. The second part was an analysis of the
two-storey buildings by assuming that the buildings are in three
different areas. The study found that the lateral forces from
earthquakes significantly affect the building more than the wind
forces. The Modified Response Spectrum Analysis (MRSA) provides
the base shears about 2-3 times comparing to those obtained
from the equivalent static force. The shear forces in the vertical
members for one- and two-storey buildings obtained from the
equivalent static force and MRSA are close to each other.
However, for the three-storey building, the shear forces in the
vertical members from the equivalent static method were
explicitly higher than those calculated from MRSA.