Seismic design procedure and seismic response of post-tensioned self-centering steel frames

2009 ◽  
Vol 38 (3) ◽  
pp. 355-376 ◽  
Author(s):  
Hyung-Joon Kim ◽  
Constantin Christopoulos
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Steel Frames ◽  
Design Procedure ◽  
Post Tensioned

scholarly journals EC8-based seismic design and assessment of self-centering post-tensioned steel frames with viscous dampers

2015 ◽  
Vol 105 ◽  
pp. 60-73 ◽  
Author(s):  
Angelos S. Tzimas ◽  
Athanasios I. Dimopoulos ◽  
Theodore L. Karavasilis
Keyword(s):  
Seismic Design ◽  
Steel Frames ◽  
Viscous Dampers ◽  
Post Tensioned

A Seismic Design Procedure for Different Performance Objectives for Post-Tensioned Walls

2019 ◽  
pp. 1-18
Author(s):  
Enrique Hernández-Montes ◽  
Akrivi Chatzidaki ◽  
Luisa María Gil-Martin ◽  
Mark Aschheim ◽  
Dimitrios Vamvatsikos
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Post Tensioned

Response Modification Factor for Y-Eccentric-Braced Steel Frame Structures

2011 ◽  
Vol 250-253 ◽  
pp. 2285-2290
Author(s):  
Wen Xia Yang ◽  
Qiang Gu ◽  
Zhen Sen Song
Keyword(s):  
Seismic Design ◽  
Pushover Analysis ◽  
Steel Frames ◽  
Design Procedure ◽  
Response Spectra ◽  
Elastic Response ◽  
Base Shear ◽  
Response Modification Factor ◽  
Elastic Response Spectra ◽  
Modification Factor

In current seismic design procedure, structural base shear is calculated according to the linear elastic response spectra divided by response modification factorR. The response modification factor is important to the reliability and economy of building seismic design. In this paper, the response modification factors of Twelve Y-eccentric braced steel frames with various stories and spans lengths were evaluated by capacity spectrum method based on the global capacity envelops obtained from an improved pushover analysis and incremental dynamic analysis. According to the results, an appropriate formula of the response modification factor for the Y-eccentric braced steel frames was suggested.

Direct Displacement Based Seismic Design of High Rise Structures with Strengthened Stories (I) - Theory

2011 ◽  
Vol 250-253 ◽  
pp. 2176-2185
Author(s):  
Ke Jia Yang ◽  
Xing Wen Liang ◽  
Lin Zhu Sun
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Design Procedure ◽  
Single Degree Of Freedom ◽  
Mode Theory ◽  
High Rise ◽  
Single Degree ◽  
Actual Design ◽  
Displacement Based ◽  
Displacement Based Seismic Design

High rise structures with strengthened stories are widely used nowadays. A rational seismic design procedure for this kind of structure is thus necessary. Based on mode theory and direct displacement based seismic design of multi-story buildings, this paper proposed a new direct displacement based seismic design procedure. In the proposed method, each mode of the high rise structure is equivalent to a single degree of freedom (SDOF) system. Seismic response of each mode is calculated and adds up to consider the contributions of higher modes. Considering the characteristic of strengthened stories, two stories above the strengthened stories are taken as the “key stories”, whose performance indicates the performance of the building. The proposed procedure is logical, simple and can serve for reference of actual design.

Prescriptive Seismic Design Procedure for Post-Tensioned Mass Timber Rocking Walls

2022 ◽  
Vol 148 (3) ◽  
Author(s):  
A. Busch ◽  
R. B. Zimmerman ◽  
S. Pei ◽  
E. McDonnel ◽  
P. Line ◽  
...  
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Rocking Walls ◽  
Mass Timber ◽  
Post Tensioned

Seismic Response Modification Factor of Eccentrically Brace Steel Frame

2011 ◽  
Vol 71-78 ◽  
pp. 1605-1608 ◽  
Author(s):  
Yong Kang Shen
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Amplification Factor ◽  
Steel Frames ◽  
Capacity Spectrum Method ◽  
Response Modification Factor ◽  
Capacity Spectrum ◽  
Seismic Force ◽  
Elasto Plasticity ◽  
Modification Factor

Seismic response modification factor (R) and displacement amplification factor (Cd) are very important parameters to compute seismic force and to verify elasto-plasticity deformation in advanced seismic design. According to the present China Code for Seismic Design of Buildings,15 eccentrically braced steel frames are designed. R & Cd of 15 samples are computed by the Capacity Spectrum Method (CSM).Some correlative factors are analyzed and some reference is presented to the seismic design of these structures.

Seismic design, modelling and assessment of self-centering steel frames using post-tensioned connections with web hourglass shape pins

2013 ◽  
Vol 11 (5) ◽  
pp. 1797-1816 ◽  
Author(s):  
Athanasios I. Dimopoulos ◽  
Theodore L. Karavasilis ◽  
George Vasdravellis ◽  
Brian Uy
Keyword(s):  
Seismic Design ◽  
Steel Frames ◽  
Post Tensioned

scholarly journals Probabilistic seismic response analysis of coastal highway bridges under scour and liquefaction conditions: does the hydrodynamic effect matter?

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Xiaowei Wang ◽  
Yutao Pang ◽  
Aijun Ye
Keyword(s):  
Seismic Response ◽  
Seismic Design ◽  
Highway Bridges ◽  
Element Model ◽  
Response Analysis ◽  
Hydrodynamic Effect ◽  
Strong Earthquakes ◽  
Influence Of Water ◽  
Scour Hazard ◽  
Ground Motion Records

AbstractCoastal highway bridges are usually supported by pile foundations that are submerged in water and embedded into saturated soils. Such sites have been reported susceptible to scour hazard and probably liquefied under strong earthquakes. Existing studies on seismic response analyses of such bridges often ignore the influence of water-induced hydrodynamic effect. This study assesses quantitative impacts of the hydrodynamic effect on seismic responses of coastal highway bridges under scour and liquefaction potential in a probabilistic manner. A coupled soil-bridge finite element model that represents typical coastal highway bridges is excited by two sets of ground motion records that represent two seismic design levels (i.e., low versus high in terms of 10%-50 years versus 2%-50 years). Modeled by the added mass method, the hydrodynamic effect on responses of bridge key components including the bearing deformation, column curvature, and pile curvature is systematically quantified for scenarios with and without liquefaction across different scour depths. It is found that the influence of hydrodynamic effect becomes more noticeable with the increase of scour depths. Nevertheless, it has minor influence on the bearing deformation and column curvature (i.e., percentage changes of the responses are within 5%), regardless of the liquefiable or nonliquefiable scenario under the low or high seismic design level. As for the pile curvature, the hydrodynamic effect under the low seismic design level may remarkably increase the response by as large as 15%–20%, whereas under the high seismic design level, it has ignorable influence on the pile curvature.

Sign in / Sign up

Export Citation Format

Share Document