Damage-Limiting Aseismic Design of Buildings

Abstract

A procedure for earthquake-resistant design is developed to limit the potential damage of buildings to a tolerable level. The procedure is based on the damage model developed earlier (Park and Ang, 1984) in which structural damage is expressed as a function of the maximum deformation and dissipated hysteretic energy. The tolerable degree of damage is defined on the basis of calibration with observed damages from past major earthquakes. The design method is examined in the context of reliability.

Evaluation of Damage in Reinforced Concrete Columns Under Biaxial Loading

“…Therefore, for each column the score may vary between 0 and 4. Based on the results of the work carried out by Park et al [8], where DIs' boundaries for each damage degree observed after earthquake events were adapted to the observed damage states as reported in previous sections, Table 4 includes proposals of DI ranges for each damage state. The DI was computed for each biaxial test using expressions (7) to (13), whilst expressions (2) and (3) were adopted to estimate the parameter β and the ultimate displacement (for each RC column direction).…”

“…Concerning the ultimate deformation capacity, some expressions have been proposed based on experimental tests performed up to failure on beams and columns. Park et al [8] suggested expression (3) to estimate the ultimate displacement. According to the study performed by Fardis et al [19], it was concluded that this equation leads to the best agreement of the Park & Ang index with several experimental results analyzed.…”

“…The damage index (DI) proposed by Park & Ang [8,9] is defined by a linear combination of the normalized maximum deformation and the normalized dissipated hysteretic energy resulting from cyclic loading. The Park & Ang DI is therefore expressed by:…”

“…The deformation demand associated with each damage state is compared with proposed performance objectives in international guidelines (FEMA 356 [6] and VISION 2000 [7]). Finally, analytical expressions based on the Park & Ang damage index [8,9] are proposed and their accuracy in estimating damage is tested by a comparison with the observed experimental results.…”

Energy-Based Seismic Risk Evaluation of Tall Reinforced Concrete Building in Vancouver, BC, Canada, under Mw9 Megathrust Subduction Earthquakes and Aftershocks

“…Park et al (1987) proposed a story damage index D story as: where D i is the local damage index at location i and E i is the corresponding energy absorbed at location i. The energy dissipated, however, is also incorporated in the damage computation.…”