Determination of Effectiveness of Viscoelastic Dampers in Controlling the Seismic Response of Piping System by Shake Table Testing

2017 ◽  
pp. 493-501
Author(s):  
R. K. Verma ◽  
P. N. Dubey ◽  
G. R. Reddy
Keyword(s):  
Seismic Response ◽  
Piping System ◽  
Shake Table ◽  
Shake Table Testing ◽  
Viscoelastic Dampers

Seismic response of PP-band and FRP retrofitted house models under shake table testing

2016 ◽  
Vol 111 ◽  
pp. 298-316 ◽  
Author(s):  
M. Umair Saleem ◽  
Muneyoshi Numada ◽  
Muhammad Nasir Amin ◽  
Kimiro Meguro
Keyword(s):  
Seismic Response ◽  
Shake Table ◽  
Shake Table Testing

Shake table testing for the seismic response of a container crane with uplift and derailment

2021 ◽  
Vol 114 ◽  
pp. 102811
Author(s):  
Van Bac Nguyen ◽  
Jungwon Huh ◽  
Bismark Kofi Meisuh ◽  
Quang Huy Tran
Keyword(s):  
Seismic Response ◽  
Shake Table ◽  
Shake Table Testing ◽  
Container Crane

Determination of Support Minimum Rigid Stiffness for Piping Analysis

2015 ◽  
Author(s):  
Jennifer Huang ◽  
Timothy M. Adams
Keyword(s):  
Lower Bound ◽  
Seismic Response ◽  
Natural Frequency ◽  
Iterative Process ◽  
Piping System ◽  
Alternative Approach ◽  
Formal Procedure ◽  
Deflection Criteria ◽  
Spring Constants

Pipe supports are represented as spring constants in piping analysis, and therefore a formal procedure is required to determine the spring constant values. Two current approaches are to enforce deflection criteria to ensure support rigidity or calculate the support stiffness values directly. However, the former approach results in overly conservative support designs and the latter approach becomes an iterative process of designing the supports and observing the response of the piping system. To avoid the issues presented by these methods, an alternative approach is presented which involves increasing values of support stiffness until change in natural frequency of the system diminishes. This method can help establish a lower bound (minimum rigid) stiffness above which there will be no significant change in the seismic response of the piping system. Using this approach only requires the support designs to have stiffness values at or above the minimum value without being concerned with detailed stiffness calculations or using deflection limits. This paper presents the methods and results of an expansive study to establish minimum rigid stiffness values for piping analysis.

Seismic Response of High-Voltage Transformer-Bushing Systems Incorporating Flexural Stiffeners II: Experimental Study

2013 ◽  
Vol 29 (4) ◽  
pp. 1353-1367 ◽  
Author(s):  
Maria Koliou ◽  
Andre Filiatrault ◽  
Andrei M. Reinhorn
Keyword(s):  
Seismic Response ◽  
High Voltage ◽  
Companion Paper ◽  
Cover Plate ◽  
Rigid Base ◽  
Shake Table ◽  
Test Results ◽  
Voltage Transformer ◽  
Shake Table Testing ◽  
Cover Plates

A numerical study conducted on four transformer-bushing models presented in a first companion paper indicated that high-voltage bushings mounted on the cover plates of transformers are more vulnerable to seismic loading than bushings mounted on a rigid base. This would explain why the good performance of bushings mounted on a rigid base observed during shake table testing does not correlate well with their performance in the field. In this second companion paper, the addition of flexural stiffeners on the transformer cover plates as a means to stiffen the base of bushings and mitigate their seismic vulnerability is investigated experimentally. Shake table testing was conducted on a 230 kV porcelain bushing mounted on a support structure incorporating a flexible cover plate and two stiffener configurations. Test results confirmed that stiffening the cover plates is beneficial to the seismic response of high-voltage bushings. Test results are compared to the predictions of finite element analyses.

Seismic response of the secondary piping system under bi-directional earthquake

2021 ◽  
Author(s):  
Vishal Kamble ◽  
Shiv Dayal Bharti ◽  
Mahendra Kumar Shrimali
Keyword(s):  
Seismic Response ◽  
Piping System

Shake table testing of a low damage steel building with asymmetric friction connections (AFC)

2019 ◽  
Vol 155 ◽  
pp. 129-143 ◽  
Author(s):  
Ali A. Rad ◽  
Gregory A. MacRae ◽  
Nikoo K. Hazaveh ◽  
Quincy Ma
Keyword(s):  
Shake Table ◽  
Shake Table Testing ◽  
Steel Building
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