Effect of Viscous Damper Position for Isolation System of Self-Anchored Cable-Stayed Suspension Bridge

2014 ◽  
Vol 587-589 ◽  
pp. 1377-1380
Author(s):  
Feng Miao
Keyword(s):  
Time History ◽  
Suspension Bridge ◽  
Nonlinear Time History Analysis ◽  
Viscous Damper ◽  
Isolation System ◽  
Control Node ◽  
History Analysis ◽  
Control Section ◽  
Nonlinear Time History ◽  
And Control

Larger displacement and inter-force response of the structure will be produced when self-anchored cable-stayed suspension bridge in longitudinal earthquake. For the isolation system of self-anchored cable-stayed suspension bridge, whose main tower is set the lead core rubber isolation bearing. This essay does the nonlinear time history analysis under the longitudinal earthquake about the isolation system when the viscous damper is put in different location. Analysis results show that inter-force and displacement of control section and control node are reduced greatly in hybrid vibration control. The result is obvious when the viscous damper is set both in the main tower, the side block and only in the main tower.

Hybrid Vibration Control of Self-Anchored Cable-Stayed Suspension Bridge

2014 ◽  
Vol 919-921 ◽  
pp. 556-559
Author(s):  
Miao Feng
Keyword(s):  
Vibration Control ◽  
Time History ◽  
Suspension Bridge ◽  
Nonlinear Time History Analysis ◽  
Viscous Damper ◽  
History Analysis ◽  
Lead Rubber Bearings ◽  
Control Section ◽  
Rubber Bearings ◽  
Nonlinear Time History

Larger displacement and inter-force response of the structure will be produced when self-anchored cable-stayed suspension bridge in longitudinal earthquake. The optimized layout of viscous damper is done for self-anchored cable-stayed suspension bridge with the lead rubber bearings in the main tower, moreover, the nonlinear time-history analysis in the longitudinal seismic input be made. Comparing the analysis results above between the scheme with viscous damper and the scheme without isolation measures, analysis results show that inter-force and displacement of control section and control node are reduced greatly in hybrid vibration control.

Effect of LRB Position for Vibration Reduction System of Self-Anchored Cable-Stayed Suspension Bridge

2014 ◽  
Vol 974 ◽  
pp. 346-349
Author(s):  
Feng Miao
Keyword(s):  
Earthquake Engineering ◽  
Vibration Reduction ◽  
Time History ◽  
Suspension Bridge ◽  
Nonlinear Time History Analysis ◽  
Engineering Practice ◽  
Viscous Damper ◽  
Reduction System ◽  
History Analysis ◽  
Nonlinear Time History

Larger displacement and inter-force response of the structure will be produced when self-anchored cable-stayed suspension bridge in longitudinal earthquake. Engineering practice proved that the viscous damper has obviously damping effect for structure. For the vibration reduction system of self-anchored cable-stayed suspension bridge, whose main tower is set viscous damper. This essay does the nonlinear time history analysis under the longitudinal earthquake about the vibration reduction system that considering the LRB putted in different location. Compared with the damping system that only set viscous damper, analysis results show that inter-force and displacement of control section and control node are reduced greatly in hybrid vibration control.

Seismic Isolation Design of Multistory Building

2012 ◽  
Vol 204-208 ◽  
pp. 3592-3595
Author(s):  
Xiao Song ◽  
Peng Li ◽  
Guang Sheng Xu
Keyword(s):  
Seismic Isolation ◽  
Base Isolation ◽  
Time History ◽  
Nonlinear Time History Analysis ◽  
Seismic Capacity ◽  
Isolation System ◽  
Multistory Building ◽  
History Analysis ◽  
Base Isolation System ◽  
Nonlinear Time History

Design process and the nonlinear time history analysis for base isolation system is performed in this paper. The results show that the earthquake acceleration and displacement response of isolated structure can be significantly reduced. Application of the isolation system to improve the seismic capacity of the structure,can effectively reduce the response of upper structure of in earthquake.

Study on a Roller-Footing Isolated Single-Pier System

2012 ◽  
Vol 204-208 ◽  
pp. 2658-2661 ◽  
Author(s):  
Biao Wei ◽  
Shan Shan Li
Keyword(s):  
Seismic Performance ◽  
Time History ◽  
Internal Force ◽  
Nonlinear Time History Analysis ◽  
Isolation System ◽  
History Analysis ◽  
Object Of Study ◽  
Design Earthquake ◽  
Nonlinear Time History ◽  
Rolling Balls

As to improve bridges’ seismic performance, horizontal earthquake was isolated at the bottom of piers. With one pier system as the object of study, adopting nonlinear time history analysis analyzed the un-isolation system, the traditional isolation system and the new isolation system’s seismic performance especially when the actual earthquake was different from the design earthquake, in which the new isolation system was based on rolling balls. Results shows, as for the new isolation system, the internal force is independent of earthquake accelerations and earthquake periods, therefore, sympathetic vibration will not exist, and the internal force is always too small to destroy the system.

scholarly journals Performance of an Existing Reinforced Concrete Building Designed in Accordance to Older Indonesian Seismic Code: A Case Study for a Hotel in Kupang, Indonesia

2018 ◽  
Vol 20 (1) ◽  
pp. 35
Author(s):  
Pamuda Pudjisuryadi ◽  
Benjamin Lumantarna ◽  
Ryan Setiawan ◽  
Christian Handoko
Keyword(s):  
Plastic Hinge ◽  
Time History ◽  
Nonlinear Time History Analysis ◽  
Seismic Load ◽  
Ground Acceleration ◽  
Seismic Code ◽  
Damage Level ◽  
History Analysis ◽  
Nonlinear Time History ◽  
Seismic Hazard Map

The recent seismic code SNI 1726-2012 is significantly different compared to the older code SNI 1726-2002. The seismic hazard map was significantly changed and the level of maximum considered earthquake was significantly increased. Therefore, buildings designed according to outdated code may not resist the higher demand required by newer code. In this study, seismic performance of Hotel X in Kupang, Indonesia which was designed based on SNI-1726-2002 is investigated. The structure was analyzed using Nonlinear Time History Analysis. The seismic load used was a spectrum consistent ground acceleration generated from El-Centro 18 May 1940 North-South component in accordance to SNI 1726-2012. The results show that Hotel X can resist maximum considered earthquake required by SNI 1726-2012. The maximum drift ratio is 0.81% which is lower than the limit set by FEMA 356-2000 (2%). Plastic hinge damage level is also lower than the allowance in ACMC 2001.

Direct Displacement Procedure for Performance-Based Seismic Design of Mid-Rise Wood-Framed Structures

2009 ◽  
Vol 25 (3) ◽  
pp. 583-605 ◽  
Author(s):  
Wei Chiang Pang ◽  
David V. Rosowsky
Keyword(s):  
Seismic Design ◽  
Response Spectrum ◽  
Design Procedure ◽  
Time History ◽  
Time History Analysis ◽  
Nonlinear Time History Analysis ◽  
Framed Structures ◽  
History Analysis ◽  
Performance Based Seismic Design ◽  
Nonlinear Time History

This paper presents a direct displacement design (DDD) procedure that can be used for seismic design of multistory wood-framed structures. The proposed procedure is applicable to any pure shear deforming system. The design procedure is a promising design tool for performance-based seismic design since it allows consideration of multiple performance objectives (e.g., damage limitation, safety requirements) without requiring the engineer to perform a complex finite element or nonlinear time-history analysis of the complete structure. A simple procedure based on normalized modal analysis is used to convert the code-specified acceleration response spectrum into a set of interstory drift spectra. These spectra can be used to determine the minimum stiffness required for each floor based on the drift limit requirements. Specific shear walls can then be directly selected from a database of backbone curves. The procedure is illustrated on the design of two three-story ATC-63 archetype buildings, and the results are validated using nonlinear time-history analysis.

An open-source framework for regional earthquake loss estimation using the city-scale nonlinear time history analysis

2020 ◽  
Vol 36 (2) ◽  
pp. 806-831 ◽  
Author(s):  
Xinzheng Lu ◽  
Frank McKenna ◽  
Qingle Cheng ◽  
Zhen Xu ◽  
Xiang Zeng ◽  
...  
Keyword(s):  
Open Source ◽  
Time History ◽  
Seismic Damage ◽  
Scientific Workflow ◽  
Time History Analysis ◽  
Nonlinear Time History Analysis ◽  
History Analysis ◽  
Loss Prediction ◽  
Nonlinear Time History ◽  
Damage Simulation

Regional seismic damage simulation of buildings provides decision-makers with important information for earthquake disaster prevention and mitigation. Utilizing nonlinear time history analysis using multiple-degree-of-freedom (MDOF) models for buildings, and the next-generation performance-based earthquake engineering, an open-source general-purpose scientific workflow for seismic damage simulation and loss prediction of urban buildings (referred to as SimCenter Workflow) is presented in this study. To introduce the SimCenter Workflow process in detail and demonstrate its advantages, a seismic damage simulation and loss prediction for 1.8 million buildings in the San Francisco Bay Area were performed using the SimCenter Workflow. The open nature and modularization of the SimCenter Workflow facilitate its extensibility and make it practical for researchers to apply to seismic damage simulations in other regions.

Research on the Seismic Response Characteristic of a Curved Ramp Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 3889-3892 ◽  
Author(s):  
Tian Li Wang ◽  
Qing Ning Li ◽  
Hai Jun Yin
Keyword(s):  
Seismic Response ◽  
Time History ◽  
Response Characteristic ◽  
Time History Analysis ◽  
Nonlinear Time History Analysis ◽  
Expansion Joints ◽  
History Analysis ◽  
Nonlinear Time History

In order to analyze seismic response of the curved ramp bridge, this paper selected a single curved ramp bridge in a multilevel junction system as its research object. Considering the piers, beams, bearings and expansion joints simulation, it respectively built the calculating models for a curved ramp bridge and a corresponding linear one. Using nonlinear time history analysis, the paper contrasts seismic response of the curved ramp bridge with that of the linear one in several different seismic inputs. Finally the seismic response characteristic of a curved ramp bridge is put forward.

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