نتایج جستجو برای: Pounding

تعداد نتایج: 406  

2014
Mariam Ehab Hamed Salem Hatem Mostafa Nabil Yehia

During earthquakes, pounding of adjacent buildings occurs due to their different dynamic characteristics as well as insufficient separation distance between them. Although earthquake loading is commonly considered in structural design, pounding of adjacent buildings is not usually considered and usually causes highly unexpected damages and failures. Pounding effect was numerically investigated ...

2016
Adrián Arroyo Satoshi Hirata Tetsuro Matsuzawa Ignacio de la Torre

We present the results of a series of experiments at the Kumamoto Sanctuary in Japan, in which captive chimpanzees (Pan troglodytes) performed several nut cracking sessions using raw materials from Olduvai Gorge, Tanzania. We examined captive chimpanzee pounding tools using a combination of technological analysis, use-wear distribution, and micro-wear analysis. Our results show specific pattern...

2014
P. D. Pawar

During earthquake buildings which are closely spaced vibrate out of phase if there is insufficient distance between two adjacent building to accommodate maximum lateral displacement, they collide with each other this phenomenon is called as pounding. Pounding leads to verse damages to structure as the responses are drastically increased in terms of base shear, absolute acceleration, impact forc...

The present aim of this study is to investigate the effect of different parameters influencing pounding in highway bridges. Pounding is the result of a collision between two parts of the deck and/or the deck and abutments at the separation distance during the earthquake.  In the present study, the period ratio of the adjacent frames, ground motion spatial variation, and soil-structure interacti...

2014
Mohammed Ismail José Rodellar Francesc Pozo

A seismic isolated structure is usually a long-period structural system, which may encounter a lowfrequency resonance problem when subjected to a near-fault earthquake that usually has a long-period pulse-like waveform. This long-period wave component may result in an enlargement of the base displacement and a decrease of the isolation efficiency. To overcome this problem, a rolling-based seism...

Journal: :Heart 1998
P Geelen J Primo J Brugada E Andries P Brugada

OBJECTIVE To determine the clinical and electrophysiological characteristics of patients with paroxysmal palpitations and neck pounding during sinus rhythm. METHODS Clinical, electrocardiographic, and electrophysiological characteristics of six patients with paroxysmal palpitations and neck pounding during sinus rhythm were studied in basal conditions and when symptomatic. Response to treatme...

A. Mortezaei H. Naderpour, Rui C. Barros S.M. Khatami

Building pounding occurs between two adjacent buildings with small gap or without sufficient separation distance. It leads to damage buildings during earthquake due to impact. Many researchers have investigated building pounding based on impact force reduction and energy dissipation increase, when two buildings collide with each other. In numerical investigations, using specific link element, i...

Journal: :Engineering Structures 2022

Pounding research has been gaining momentum in the last decades with large earthquakes hitting cities insufficiently separated buildings. Even if no major structural damage may be observed case of slab–slab pounding, acceleration pulses influence response equipment and cause disruption their functionality. In this work, two different models are set up for reproducing shake table tests concernin...

1991
Muzaffer Alam K. K. S. Dasan N. Meenakshi R. Bhima Rao

Talisadya churna was prepared by pounding the individual ingredients in mortar and pestle and mixie. The Curna prepared by pounding the ingredients in mortar and pestle showed higher exhaustive extraction in hexane and solubility in alcohol. The Curna prepared by grinding the ingredients in mixie showed less acid insoluble content, high volatile matter, water soluble matter, and exhaustive extr...

Journal: :journal of rehabilitation in civil engineering 2013
rui c. barros h. naderpour s.m. khatami a. mortezaei

building pounding occurs between two adjacent buildings with small gap or without sufficient separation distance. it leads to damage buildings during earthquake due to impact. many researchers have investigated building pounding based on impact force reduction and energy dissipation increase, when two buildings collide with each other. in numerical investigations, using specific link element, i...

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