Research Article

Base Isolation for Seismic Retrofitting of a Multiple Building Structure: Design, Construction, and Assessment

Table 2

Target displacement and corresponding peak ground acceleration (IO Limit State, DL Limit State, and LS Limit State).

Capacity of structure ACapacity of structure BCapacity of structure C
IODLLSIODLLSIODLLS
PGA/gPGA/gPGA/gPGA/gPGA/gPGA/gPGA/gPGA/gPGA/g

First-Mode + X + Ecc160.074350.2231740.374200.081260.196630.374180.085240.218560.374
First-Mode – X + Ecc180.079360.2411750.374200.081260.201630.374180.086240.193570.374
First-Mode + X – Ecc180.086380.2621760.374200.080260.159630.374180.088230.213560.374
First-Mode – X – Ecc160.070320.1861680.374200.081260.200630.374180.088230.226550.374
Uniform + X + Ecc200.083400.230540.177220.090300.208710.374200.101270.260650.114
Uniform – X + Ecc200.090410.246540.111220.087290.220710.374200.115270.355650.248
Uniform + X – Ecc210.094390.220390.096220.085300.177710.374210.105270.241660.310
Uniform – X – Ecc230.080300.208730.164220.090290.231710.374200.101270.274650.324
First-Mode + Y + Ecc170.097340.2291500.374210.065270.170660.374170.074220.143510.374
First-Mode – Y + Ecc170.083380.2761560.374210.068270.188660.374150.074200.160470.374
First-Mode + Y – Ecc170.083370.2631550.374210.068270.186660.374160.071200.131480.374
First-Mode – Y – Ecc180.094350.2461520.374210.065270.173660.374170.070220.149510.374
Uniform + Y + Ecc210.105420.2761550.374230.076310.194740.374220.105290.221700.374
Uniform – Y + Ecc190.090410.259690.314230.076310.195740.374200.105270.241650.374
Uniform + Y – Ecc220.090290.254690.349230.074310.184740.374210.101270.191660.374
Uniform – Y – Ecc220.105290.271690.334230.074310.196740.374220.105290.274700.374