Experimental investigation of pulse‐type ground motion effects on a steel building with nonlinear viscous dampers

2021 ◽  
Author(s):  
Baiping Dong ◽  
James M. Ricles ◽  
Brian M. Phillips
Keyword(s):  
Experimental Investigation ◽  
Ground Motion ◽  
Viscous Dampers ◽  
Steel Building ◽  
Pulse Type

Ground Motion Frequency Insensitivity of Bearing-Supported Pedestrian Bridge with Viscous Dampers

2021 ◽  
Author(s):  
Qunfeng Liu ◽  
Shimin Zhu ◽  
Wenshan Yu ◽  
Xing Wu ◽  
Fei Song ◽  
...  
Keyword(s):  
Ground Motion ◽  
Viscous Dampers ◽  
Pedestrian Bridge

scholarly journals Experimental investigation of strong ground motion due to thrust fault earthquakes

2014 ◽  
Vol 119 (2) ◽  
pp. 1316-1336 ◽  
Author(s):  
Vahe Gabuchian ◽  
Ares J. Rosakis ◽  
Nadia Lapusta ◽  
David D. Oglesby
Keyword(s):  
Experimental Investigation ◽  
Ground Motion ◽  
Strong Ground Motion ◽  
Thrust Fault ◽  
Strong Ground

scholarly journals Rocking Behaviour of Multi-Block Columns Subjected to Pulse-Type Ground Motion Accelerations

2016 ◽  
Vol 10 (1) ◽  
pp. 150-157 ◽  
Author(s):  
Giovanni Minafò ◽  
Giuseppina Amato ◽  
Lorenzo Stella
Keyword(s):  
Ground Motion ◽  
Numerical Approach ◽  
Structural Members ◽  
Cross Sectional ◽  
Practical Engineering ◽  
Pulse Type ◽  
Single Block ◽  
The Individual ◽  
Acceleration Record ◽  
Rocking Response

Ancient columns, made with a variety of materials such as marble, granite, stone or masonry are an important part of the European cultural heritage. In particular columns of ancient temples in Greece and Sicily which support only the architrave are characterized by small axial load values. This feature together with the slenderness typical of these structural members clearly highlights as the evaluation of the rocking behaviour is a key aspect of their safety assessment and maintenance. It has to be noted that the rocking response of rectangular cross-sectional columns modelled as monolithic rigid elements, has been widely investigated since the first theoretical study carried out by Housner (1963). However, the assumption of monolithic member, although being widely used and accepted for practical engineering applications, is not valid for more complex systems such as multi-block columns made of stacked stone blocks, with or without mortar beds. In these cases, in fact, a correct analysis of the system should consider rocking and sliding phenomena between the individual blocks of the structure. Due to the high non-linearity of the problem, the evaluation of the dynamic behaviour of multi-block columns has been mostly studied in the literature using a numerical approach such as the Discrete Element Method (DEM). This paper presents an introductory study about a proposed analytical-numerical approach for analysing the rocking behaviour of multi-block columns subjected to a sine-pulse type ground motion. Based on the approach proposed by Spanoset al.(2001) for a system made of two rigid blocks, the Eulero-Lagrange method to obtain the motion equations of the system is discussed and numerical applications are performed with case studies reported in the literature and with a real acceleration record. The rocking response of single block and multi-block columns is compared and considerations are made about the overturning conditions and on the effect of forcing function’s frequency.

Simulation method of near-fault pulse-type ground motion

2007 ◽  
Vol 20 (1) ◽  
pp. 80-87 ◽  
Author(s):  
Yu-ji Tian ◽  
Qing-shan Yang ◽  
Ming-qi Lu
Keyword(s):  
Ground Motion ◽  
Simulation Method ◽  
Near Fault ◽  
Pulse Type

scholarly journals Large-scale experimental investigation of a low-cost PVC ‘sand-wich’ (PVC-s) seismic isolation for developing countries

2020 ◽  
Vol 36 (4) ◽  
pp. 1886-1911 ◽  
Author(s):  
Anastasios Tsiavos ◽  
Anastasios Sextos ◽  
Andreas Stavridis ◽  
Matt Dietz ◽  
Luiza Dihoru ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Developing Countries ◽  
Ground Motion ◽  
Seismic Isolation ◽  
Large Scale ◽  
Low Cost ◽  
Seismic Energy ◽  
Earthquake Ground Motion ◽  
Isolation System ◽  
Seismically Isolated

This study presents a large-scale experimental investigation on the seismic performance of an innovative, low-cost seismic isolation system for developing countries. It is based on the beneficial effect of the encapsulation of sand grains between two PVC surfaces on the initiation of sliding and the dissipation of seismic energy between the surfaces. A three-times scaled-down, idealized, seismically isolated model of a prototype single-story structure located in Nepal is subjected to an ensemble of recorded earthquake ground motion excitations. The experimentally derived response of the seismically isolated structure is compared with the response of the corresponding fixed-base structure. This system is part of a wider hybrid design approach where the structure is designed to resist the seismic forces at the design acceleration level. The seismic isolation system sets an upper bound to the response of the structure for ground motion excitations exceeding the design level.

scholarly journals Dynamic response of masonry arch with geometrical irregularities subjected to a pulse-type ground motion

2017 ◽  
Vol 91 (1) ◽  
pp. 609-624 ◽  
Author(s):  
L. Severini ◽  
N. Cavalagli ◽  
M. DeJong ◽  
V. Gusella
Keyword(s):  
Dynamic Response ◽  
Ground Motion ◽  
Masonry Arch ◽  
Pulse Type

Roof Isolation System to Reduce the Seismic Response of Buildings: A Preliminary Assessment

1998 ◽  
Vol 14 (3) ◽  
pp. 521-532 ◽  
Author(s):  
Roberto Villaverde
Keyword(s):  
Comparative Study ◽  
Detrimental Effect ◽  
Earthquake Ground Motion ◽  
Vibration Absorber ◽  
Preliminary Assessment ◽  
Viscous Dampers ◽  
Isolation System ◽  
Steel Building ◽  
Rubber Bearings ◽  
Seismic Response Of Buildings

A roof isolation system is proposed as a means to reduce the detrimental effect of earthquakes in buildings. This roof isolation system entails the insertion of flexible laminated rubber bearings between a building's roof and the columns that support it, and the addition of viscous dampers connected between the roof and the rest of the building. The properties and dimensions of the rubber bearings and viscous dampers are selected in a way that makes the roof, bearings, and dampers form a highly damped vibration absorber. Presented also is a comparative study with a simple five-story steel building under a strong earthquake ground motion that is carried out to assess the effectiveness of the proposed system. In this comparative study, it is found that the roof isolation scheme reduces the floor displacements and interstory drifts of the analyzed building by as much as 83 percent. On the basis of these results and in view of its simplicity, it is concluded that the proposed roof isolation system has the potential to become a practical and effective way to reduce earthquake damage in buildings.

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