𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Seismic response of base isolated buildings including p-Δ effects of isolation bearings

✍ Scribed by Chan Ghee Koh; Thambirajah Balendra

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
622 KB
Volume
18
Category
Article
ISSN
0098-8847

No coin nor oath required. For personal study only.

✦ Synopsis

In order to achieve a low isolation frequency, elastomeric bearings used for base isolation of buildings usually have low shear rigidity which leads to a significant reduction in the buckling load. The effects-of compression load on the bearing behaviour are therefore an important consideration. A study of seismic response of base isolated buildings is presented in this paper, fully accounting for the P-A effects of isolation bearings. An analytical procedure is formulated that treats separately the superstructure and the supporting bearings and assembles the governing equations via the interaction forces at the base deck. The resulting equations are then solved step-by-step numerically. Numerical results obtained for a base isolated five-storey shear building show that neglecting the F A effects can lead to considerable errors in the computed seismic response when the buckling safety factor of bearings is low.

📜 SIMILAR VOLUMES

Response of seismically isolated buildin
Response of seismically isolated buildings considering poundings
✍ Petros Komodromos; Panayiotis C. Polycarpou; Loizos Papaloizou; Marios C. Phocas 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 512 KB

## Abstract Numerical simulations and parametric studies have been used to investigate the influence of potential poundings of seismically isolated buildings with adjacent structures on the effectiveness of seismic isolation. Poundings are assumed to occur at the isolation level between the seismic

Dynamics of seismic impacts in base-isol
Dynamics of seismic impacts in base-isolated buildings
✍ Malhotra, Praveen K. 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 252 KB 👁 2 views

A systematic study is made of the effects of seismic impacts between the base of an isolated building and the surrounding retaining wall. The analysis is performed without using gap elements or assuming values of the coefficient of restitution and the duration of impact. The analysis captures the ef

Seismic response analysis of bridges iso
Seismic response analysis of bridges isolated with friction pendulum bearings
✍ Wang, Yen-Po; Chung, Lap-Loi; Liao, Wei-Hsin 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 365 KB 👁 1 views

A systematic method is developed for the dynamic analysis of the structures with sliding isolation which is a highly non-linear dynamic problem. According to the proposed method, a unified motion equation can be adapted for both stick and slip modes of the system. Unlike the traditional methods by w