SR5 Lake Washington Ship Canal Bridge pushover analysis

Ballard, Thomas A.; Sedarat, Hassan

doi:10.1016/s0045-7949(99)00022-x

Cited by 9 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Up to now, researchers have applied the pushover analysis to some kinds of bridge structures. For instance, Une et al [2] used it for RC framing bridges in the longitudinal direction; Fajfar et al [3] formulated the method for RC bridges in the transverse direction; Ballard and Sedarat [4] implemented it to a complex bridge. However, few e orts have been made on steel bridges and the e ects of isolation bearings, and even for RC structures, the applicable range of the pushover analysis has been illustrated by just a few studies [5].…”

Section: Introductionmentioning

confidence: 99%

Seismic response predictions of multi‐span steel bridges through pushover analysis

Zheng

Usami

2003

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

SUMMARYIn the new trend of seismic design methodology, the static pushover analysis is recommended for simple or regular structures whilst the time-history analysis is recommended for complex structures. To this end, the applicable range of the pushover analysis has to be clariÿed. This study aims at investigating the applicability of pushover analysis to multi-span continuous bridge systems with thin-walled steel piers. The focus is concentrated on the response demand predictions in longitudinal or transverse directions. The pushover analysis procedure for such structures is ÿrstly summarized and then parametric studies are carried out on bridges with di erent types of superstructure-pier bearing connections. The considered parameters, such as piers' sti ness distribution and pier-deck sti ness ratio, are varied to cover both regular and irregular structures. Finally, the relation of the applicability of pushover analysis to di erent structural formats is demonstrated and a criterion based on the higher modal contribution is proposed to quantitatively specify the applicable range.

show abstract

Section: Introductionmentioning

confidence: 99%

Seismic response predictions of multi‐span steel bridges through pushover analysis

Zheng

Usami

2003

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…Each lumped story mass is defined as m j , and the total building mass is DOF j=1 m j . HME are deemed to be significant if the modal mass ratio sum (MMR) is less than 0.750 [25]; by definition, the MMR is computed using only the first elastic mode although the 0.750 cutoff will be used to assess whether significant inelastic HME exist as well (noted hereinafter as HME). As such, an N i number of mode shapes -{q i,1 , q i,2 , q i,3 , .…”

Section: Inelastic Mode Shapes and Higher-mode Effectsmentioning

confidence: 99%

“…Expression (24) is the difference between the exact target demands pre-computed in NONLIN and the E-SDOF demands, f k m . The change in the parameters is expressed in (25) and leads to new values of µ ∆ , R f , and I IE . The process repeats until {E} m is minimized (i.e., { P} m ≈ { P} m+1 ).…”

Section: Capacity and Demand Optimizationmentioning

confidence: 99%

See 1 more Smart Citation

Optimal seismic analysis of degrading planar frames using a weighted energy method to associate inelastic mode shapes: Part I optimal parameters

Attard

Fafitis

2007

Engineering Structures

View full text Add to dashboard Cite

“…Non-linear static (pushover) analysis is also an attractive choice because of its simplicity and ability to identify component-and systemlevel deformation demands with accuracy comparable to dynamic analysis. [12][13][14] It also provides an insight into the available reserve capacity of the structure. Many methods have evolved, over the years, for pushover analysis of structures.…”

Section: Introductionmentioning

confidence: 99%

Performance-based seismic design of a continuous bridge

Ghosh¹,

Singh²,

Thakkar³

2008

Proceedings of the Institution of Civil Engineers - Bridge Engi

View full text Add to dashboard Cite

Performance-based design (PBD) provides an insight into the expected performance of a designed structure during an earthquake. Over recent decades, considerable development on the PBD of buildings has taken place, but studies regarding the PBD of bridges are limited. This paper examines the estimated performance of a three-span continuous bridge designed using a codal procedure for the site-specific design response spectrum. A three-dimensional model of the bridge was developed using non-linear modelling of the piers. The response of the bridge was estimated using non-linear static and dynamic procedures. The effect of loading patterns and the accuracy of different pushover analysis methods were examined, and Fema-356 performance levels compared with limit states defined by Kowalsky. The performance of the bridge was studied for different values of the response reduction factor used in the design. The paper also discusses the advantages of PBD and pushover analysis.

show abstract

SR5 Lake Washington Ship Canal Bridge pushover analysis

Cited by 9 publications

References 3 publications

Seismic response predictions of multi‐span steel bridges through pushover analysis

Seismic response predictions of multi‐span steel bridges through pushover analysis

Optimal seismic analysis of degrading planar frames using a weighted energy method to associate inelastic mode shapes: Part I optimal parameters

Performance-based seismic design of a continuous bridge

Contact Info

Product

Resources

About