The seismic response of bridges seismically isolated by lead-rubber bearings (LRB) to earthquake excitations of different magnitudes is presented in this thesis. The force-deformation behavior of LRB is considered as bilinear. The specific purpose of the study is to assess the effect of seismic isolation on the peak response of bridges subjected to different base accelerations ranging from 0.05...

Soft storey buildings are characterized by having a storey which has a lot of open spaces. This soft storey creates a major weak point in an earthquake. Since soft stories are classically associated with retail spaces and parking garages, they are often on the lower stories of a building, which means that when they collapse, they can take the whole building down with them, causing serious struc...

This paper presents a comparative seismic performance assessment of superelastic-friction base isolator (S-FBI) systems in improving the response of bridges under near-field earthquakes. The S-FBI system consists of a steel-Teflon sliding bearing and a superelastic shape memory alloy (SMA) device. The other isolation systems considered here are lead rubber bearing (LRB), friction pendulum syste...

Base isolation has been used as one of the most wildly accepted seismic protection systems that should substantially dissociate a superstructure from its substructure resting on a shaking ground, thereby sustainably preserving entire structures against earthquake forces as well as inside non-structural integrities. Base isolation devices can operate very effectively against near-fault (NF) grou...

Recent earthquakes have enforced the engineering community to design seismically more efficient buildings through energy dissipation systems. For this purpose, paper investigates seismic behavior of a high-rise building with series base isolation Firstly, 20-storey steel frame is selected as fixed-base building, and then equipped lead rubber bearings (LRBs). In modelling LRB, period alternative...

Indonesia merupakan negara yang dikelilingi oleh barisan gunung berapi, atau biasa disebut ring of fire . Dengan adanya aktivitas seismik tinggi, bangunan di harus didesain agar menghasilkan performa baik dalam menahan gaya gempa, sehingga tidak menimbulkan korban jiwa. Base isolator , seperti HDRB dan LRB sebuah inovasi digunakan pembangunan gedung untuk memberikan ketahanan pada pondasi, keti...

The adipose tissue-derived hormone, leptin, acts via its receptor (LRb) in the brain to regulate energy balance and neuroendocrine function. In order to understand leptin action we have explored the physiological function of LRb signalling pathways, defining important roles for signal transducer and activator of transcription-3 (STAT3) in positive signalling and for LRbTyr(985)-mediated feedbac...

With the development of high-speed railway in recent years, lots of researchers have been paying more and more attention to the seismic isolation of high-speed railway bridge. The equivalent linear model of hysteretic characteristics of lead rubber bearings (LRB) is presented, the computational method and the varying range of dynamic parameters effecting hysteretic characteristics of LRB are es...

PURPOSE The aim of this study is to synthesize and evaluate (68)Ga-labeled Lissamine Rhodamine B (LRB) as a new radiotracer for imaging MDA-MB-231 and MCF-7 cells induced tumor mice by positron emission tomography (PET). METHODS Firstly, we performed the radio synthesis and microPET imaging of (68)Ga(DOTA-LRB) in athymic nude mice bearing MDA-MB-231 and MCF-7 human breast cancer xenografts. A...

The structural performance of base-isolated buildings during past earthquakes confirmed the suitability Lead Rubber Bearing (LRB) isolators. To assess effectiveness such isolators, 3D base-fixed and associated models a multi-story building are performed for three components recorded at each stations with closest distances to seismic fault approximately 5.54, 11.39, 17.82 km 6.7 Mw Northridge ea...