Table 6 -6: Properties of LRB For 35 Storey Building
Related Figures (52)
Fig -1: Structural Control Systems In the last three decades, there has been great deal of interest in the use of control systems to mitigate the effects of dynamic environmental hazards like earthquake and strong winds on the civil engineering structures. Fig -2: Lead Rubber Bearing Laminated Rubber Bearings are able to supply the required displacements and provides lateral flexibility for isolation Combining these with a lead-plug insert which provides hysteretic energy dissipation, reduces earthquake forces and provides wind resistance and the damping required for a successful seismic isolation system can be incorporated. LRB are usually made of alternating layers of steel plates which provides vertical stiffness to carry vertical loads and natural rubber layers with a critical hole into which the lead core is press fitted. Top and bottom flange plates are integral with bearing and connect structure above and below bearing. When subjected to lateral shear forces, the lead core deforms almost in pure shear, yields at low level of shear stresses, approximately 8 to 10 MPa at normal (20°C) temperature, and produces rather stable hysteretic deformation behaviour over a number of cycles. of, but limiting the response under dynamic actions. These systems dissipate energy by forcing a fluid through an orifice similar to the shock absorbers of an automobile. Viscous dampers are used in high-rise buildings in seismic areas. It can operate over an ambient temperature ranging from 40°C to 70°C. Viscous damper reduces the vibrations induced by both strong wind and earthquake. Table -3: Properties of LRB For 20 Storey Building 3.1.1 TIME PERIOD Fig -5: (a) FB, (b) FB+DAMPERS, (c) BI, (d) BI+-DAMPERS, (e) ISI, (f) ISI+DAMPERS Fig -4: Plan View of 20 Storey Building models fl International Research Journal of Engineering and Technology (IRJET) — e-I ET Volume: 10 Issue: 07 | July 2023 www.irjet.net p-I Chart -4: Storey Drift for Bhuj Ground Motion Chart -2: Storey Displacement for EL Centro Ground Motion Chart -3: Storey Displacement for Northridge Ground Motion Chart -1: Storey Displacement for Bhuj Ground Motion Chart -7: Storey Shear for Bhuj Ground Motion Chart -8: Storey Shear for EL Centro Ground Motion Chart -6: Storey Drift for Northridge Ground Motion Chart -5: Storey Drift for EL Centro Ground Motion Table -7: Time Period of 35 Storey Building Models Table -5: Description of 35 Storey Building Models Chart -9: Storey Shear for Northridge Ground Motion Chart -10: Storey Overturning Moment for Bhuj Ground Chart -11: Storey Overturning Moment for EL Centro 3.2.1 TIME PERIOD Chart -12: Storey Overturning Moment for Northridge CwvinaA hi Aetnan Chart -16: Storey Drift for Bhuj Ground Motion Chart -13: Storey Displacement for Bhuj Ground Motion Chart -14: Storey Displacement for EL Centro Ground Motion Chart -15: Storey Displacement for Northridge Ground Motion Chart -19: Storey Shear for Bhuj Ground Motion Chart -20: Storey Shear for EL Centro Ground Motion Chart -18: Storey Drift for Northridge Ground Motion Chart -17: Storey Drift for EL Centro Ground Motion Table -9: Properties of LRB For 50 Storey Building Table -10: Time Period of 50 Storey Building Models Table -8: Description of 50 Storey Building Models 3.3 Description of 50 Storey Building Models chart -22: Storey Overturning Moment for Bhuj Ground Chart -24: Storey Overturning Moment for Northridge Orniind Mntinn 3.3.1 TIME PERIOD Chart -21: Storey Shear for Northridge Ground Motion Chart -27: Storey Displacement for Northridge Ground Motion Chart -28: Storey Drift for Bhuj Ground Motion Chart -26: Storey Displacement for EL Centro Ground Motion Chart -25: Storey Displacement for Bhuj Ground Motion Chart -31: Storey Shear for Bhuj Ground Motion Chart -32: Storey Shear for EL Centro Ground Motion Chart -29: Storey Drift for EL Centro Ground Motion Chart -30: Storey Drift for Northridge Ground Motion Table -12: Discussion of 35 Storey Building Models 4.3 DISCUSSION OF 50 STOREY BUILDING 4.2 DISCUSSION OF 35 STOREY BUILDING Table -13: Discussion of 50 Storey Building Models Table -11: Discussion of 20 Storey Building Models 4.1 DISCUSSION OF 20 STOREY BUILDING Chart -35: Storey Overturning Moment for EL Centro Ground Motion Chart -33: Storey Shear for Northridge Ground Motion VP International Research Journal of Engineering and Technology (IRJET) | Chart -34: Storey Overturning Moment for Bhuj Ground Motion 6. CONCLUSIONS Table -16: Cost Comparison of 50 Storey Building Models Table -14: Cost Comparison of 20 Storey Building Models 5.2 COST COMPARISON FOR 35 STOREY BUILDING Table -15: Cost Comparison of 35 Storey Building Models 5.3 COST COMPARISON FOR 50 STOREY BUILDING
