scholarly journals Performance-Based Seismic Design and Parametric Assessment of Linked Column Frame System

2018 ◽  
Author(s):  
Shahrokh Shoeibi ◽  
Mohammad Ali Kafi ◽  
Majid Gholhaki
Keyword(s):  
Seismic Design ◽  
Seismic Behavior ◽  
Parametric Design ◽  
Design Method ◽  
Low Cost ◽  
Design Procedure ◽  
Seismic Load ◽  
Moderate Earthquake ◽  
Frame System ◽  
Performance Based Seismic Design

Linked column frame system, as a new seismic load-resisting system, has a proper seismic behavior in various performance objectives due to ductile behavior of replaceable link beams. Thus, returning to occupancy after moderate earthquake is rapid and low-cost. Performance-based seismic design methods should be used for this system in order to have proper seismic behavior. In this study, by using performance-based plastic design method, a highly accurate and simple design procedure is proposed for this system. 9 prototype structures with 3, 6 or 9 stories and with 3, 4 or 5 bays are selected for parametric design and assessment. For assessment of the designed structures, nonlinear static and dynamic analyses with models according to experimental test results of the members and recommended ground motion records of FEMA P695 are used. According to analyses results, the designed structures in three hazard levels meet the performance objectives.

scholarly journals Improvement of the Performance-Based Seismic Design Method of Cable Supported Bridges with the Resilient-Friction Base Isolation Systems

2020 ◽  
Vol 10 (11) ◽  
pp. 3942 ◽  
Author(s):  
Heungbae Gil ◽  
Kyoungbong Han ◽  
Junho Gong ◽  
Dooyong Cho
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Response Spectrum ◽  
Design Procedure ◽  
Time History ◽  
Modal Shape ◽  
Ground Acceleration ◽  
Performance Based Seismic Design ◽  
Seismic Design Method ◽  
Shape Analyses

In areas of civil engineering, the resilient friction base isolator (R-FBI) system has been used due to its enhanced isolation performance under seismic excitations. However, because nonlinear behavior of the R-FBI should be reflected in seismic design, effective stiffness (Keff) of the R-FBI is uniformly applied at both peak ground acceleration (PGA) of 0.08 g and 0.154 g which use a multimodal response spectrum (RS) method analysis. For rational seismic design of bridges, it should be required to evaluate the dynamics of the R-FBI from in-field tests and to improve the seismic design procedure based on the performance level of the bridges. The objective of this study is to evaluate the dynamics of the R-FBI and to suggest the performance-based seismic design method for cable-supported bridges with the R-FBI. From the comparison between the experiments’ results and modal shape analyses, the modal shape analyses using primary (Ku) or infinite stiffness (fixed end) showed a great agreement with the experimental results compared to the application of Keff in the shape analysis. Additionally, the RS or nonlinear time history method analyses by the PGA levels should be applied by reflecting the dynamic characteristics of the R-FBI for the reasonable and efficient seismic design.

Research Situation on the Performance-Based Seismic Design Method for Reinforced Concrete Structure

2010 ◽  
Vol 163-167 ◽  
pp. 1757-1761
Author(s):  
Yong Le Qi ◽  
Xiao Lei Han ◽  
Xue Ping Peng ◽  
Yu Zhou ◽  
Sheng Yi Lin
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Design Method ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Seismic Evaluation ◽  
Seismic Codes ◽  
Performance Based Seismic Design ◽  
Capacity Calculation ◽  
Seismic Design Method

Various analytical approaches to performance-based seismic design are in development. Based on the current Chinese seismic codes，elastic capacity calculation under frequent earthquake and ductile details of seismic design shall be performed for whether seismic design of new buildings or seismic evaluation of existing buildings to satisfy the seismic fortification criterion “no damage under frequent earthquake, repairable under fortification earthquake, no collapse under severe earthquake”. However, for some special buildings which dissatisfy with the requirements of current building codes, elastic capacity calculation under frequent earthquake is obviously not enough. In this paper, the advanced performance-based seismic theory is introduced to solve the problems of seismic evaluation and strengthening for existing reinforced concrete structures, in which story drift ratio and deformation of components are used as performance targets. By combining the features of Chinese seismic codes, a set of performance-based seismic design method is established for reinforced concrete structures. Different calculation methods relevant to different seismic fortification criterions are adopted in the proposed method, which solve the problems of seismic evaluation for reinforced concrete structures.

PUSHOVER ANALYSIS BY ONE ELEMENT PER MEMBER FOR PERFORMANCE-BASED SEISMIC DESIGN

2010 ◽  
Vol 10 (01) ◽  
pp. 111-126 ◽  
Author(s):  
S. W. LIU ◽  
Y. P. LIU ◽  
S. L. CHAN
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Pushover Analysis ◽  
Nonlinear Behavior ◽  
Computational Effort ◽  
Effective Length ◽  
Single Element ◽  
Individual Element ◽  
Economical Design ◽  
Performance Based Seismic Design

Nonlinear static (pushover) analysis is an effective and simple tool for evaluating the seismic response of structures and offers an attractive choice for the performance-based design. As such, it has generally been used in modern design due to its practicality. However, the nonlinear plastic design method consumes extensive computational effort for practical structures under numerous load cases. Thus, an efficient element capturing the nonlinear behavior of a beam-column will be useful. In this paper, the authors propose a practical pushover analysis procedure using a single element per member for seismic design. As an improvement to previous research works, both P – Δ and P – δ effects as well as initial imperfections in global and member levels are considered. Therefore, the section capacity check without the assumption of effective length is adequate for present design and the conventional individual element design is avoided. The uncertainty of the buckling effects and effective length method can be eliminated and so a more economical design can be achieved. Two benchmark steel frames of three-storey and nine-storey in FEMA 440 were analyzed to illustrate the validity of the proposed method.

Simplified force-based seismic design procedure for linked column frame system

2019 ◽  
Vol 121 ◽  
pp. 87-101
Author(s):  
Shahrokh Shoeibi ◽  
Majid Gholhaki ◽  
Mohammad Ali Kafi
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Frame System

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.

SEISMIC DESIGN OF FRAME STRUCTURES EQUIPPED WITH INNOVATIVE HYSTERETIC DISSIPATIVE DEVICES

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Michele Palermo ◽  
Vittoria Laghi ◽  
Stefano Silvestri ◽  
Giada Gasparini ◽  
Tomaso Trombetti
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Structural Instability ◽  
Hysteretic Behavior ◽  
Frame Structure ◽  
Frame Structures ◽  
Order Effects ◽  
Final Design ◽  
Structural Engineer ◽  
Performance Based Seismic Design

In the present work, a Performance-Based Seismic Design procedure applied to multi-storey frame structures with innovative hysteretic diagonal steel devices (called Crescent Shaped Braces or CSB) is introduced. CSBs are steel elements of peculiar geometrical shapes that can be adopted in frame buildings as enhanced hysteretic diagonal braces. Based on their "boomerang" configuration and placement inside the frame structure, they are characterized by a lateral stiffness uncoupled from the yield strength and, if properly inserted, by an overall symmetric hysteretic behavior with hardening response at large drifts, thus preventing from global structural instability due to second-order effects. The procedure here presented is intended to guide the structural engineer through all the steps of the design process, from the selection of the performance objectives to the preliminary sizing of the CSB devices, up to the final design configuration. The steps are described in detail through the development of an applicative example.

Performance-Based Seismic Design Approach for High Speed Railway Bridge

2011 ◽  
Vol 383-390 ◽  
pp. 6601-6607
Author(s):  
Xing Chong Chen ◽  
Xiu Shen Xia ◽  
Li Li Xing
Keyword(s):  
Seismic Design ◽  
High Speed ◽  
Design Procedure ◽  
Reduction Factor ◽  
Railway Bridge ◽  
Strength Reduction Factor ◽  
Maximum Displacement ◽  
High Speed Railway ◽  
Displacement Ductility ◽  
Performance Based Seismic Design

Performance objectives and contents of resistance verification for high speed railway bridge are embodied and quantified based on the theory of performance-based seismic design. The resistance verification is proposed, which can control the damage under design earthquake and ensure safety of the pier under low-level earthquake. The simplified capacity spectra method for calculating displacement ductility factor is proposed by using strength reduction factor. The method for evaluating damage of RC bridge pier in high-level earthquake is presented by using maximum displacement and hysteretic energy. The proposed approach and procedures for performance-based seismic design are easily to implement. The performance-based seismic design procedure is demonstrated by using an example.

The Design of Performance-Based Seismic Analysis of Main Power Plant of the Conventional Island

2011 ◽  
Vol 243-249 ◽  
pp. 3992-3996
Author(s):  
Gui Xuan Wang ◽  
Jie Zhao ◽  
Zhen Liu ◽  
Yang Zheng
Keyword(s):  
Power Plant ◽  
Seismic Design ◽  
Nuclear Power ◽  
Seismic Analysis ◽  
Design Method ◽  
Development Trend ◽  
Design Procedures ◽  
New Development ◽  
Practical Engineering ◽  
Performance Based Seismic Design

The performance-based design is a new development trend of seismic design. It is a breakthrough of the seismic design procedures. Based on the existing performance design method and some documents provided performance objective, computing and seismic structural measures, the performance-based seismic design is applied to the special structure of conventional island of the nuclear power plant. The performance-based seismic design is proved to be feasible according to a practical engineering case, as well the performance-based seismic design is needed to be further improved.

scholarly journals Seismic design of prestressed concrete buildings

1990 ◽  
Vol 23 (4) ◽  
pp. 288-304 ◽  
Author(s):  
Minehiro Nishiyama
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Dynamic Response ◽  
Seismic Design ◽  
Prestressed Concrete ◽  
Design Procedure ◽  
Seismic Load ◽  
Seismic Loads ◽  
Concrete Buildings ◽  
Reversed Cyclic

The current seismic design procedure for prestressed concrete buildings in Japan is described. The design seismic loads for prestressed concrete buildings provided in NZS 4203:1984 are compared with those in the corresponding Japanese code. Comparisons between prestressed concrete and ordinary reinforced concrete buildings are discussed with regard to design seismic load, dynamic response during earthquake motions and the performance of beam-column joints under reversed cyclic loading. The results of several tests are summarised.

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