Large-Scale Experimental Study of Precast Segmental Unbonded Posttensioned Concrete Bridge Columns for Seismic Regions

Ou, Yu‐Chen; Wang, Ping‐Hsiung; Tsai, Ming-Rung; Chang, Kuo‐Chun; Lee, George C.

doi:10.1061/(asce)st.1943-541x.0000110

Cited by 232 publications

(107 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the ability to accurately model the behaviour of manufactured structural elements, this design philosophy has to date been utilised extensively in structural designs. Examples of such a method are the introduction of ductility in the design of beams and columns of a steel-frame structure or the use of unbonded tendons to give ductile behaviour of beam-column joints (Holden et al, 2003;Ou et al, 2010;Pampanin, 2005;Smith et al, 2011). With designs being led by structural engineers combined with a perceived or real lack of ability to characterise the seismic response of the soil, ductility has not been widely included into the design of the soil-foundation system.…”

Section: Introductionmentioning

confidence: 99%

A new macro-element model encapsulating the dynamic moment–rotation behaviour of raft foundations

Heron¹,

Haigh²,

Madabhushi³

2015

Géotechnique

View full text Add to dashboard Cite

A new macro-element model encapsulating the dynamic moment-rotation behaviour of raft foundations. Geotechnique, 65 (5). pp. 442-451. ISSN 1751-7656 Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/34863/1/2015%20-%20Heron%20-%20Geotechnique%20-%20A%20new%20macro-element%20model%20encapsulating%20the%20dynamic %20moment-rotation%20behaviour%20of%20raft%20foundations.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the University of Nottingham End User licence and may be reused according to the conditions of the licence. For more details see: http://eprints.nottingham.ac.uk/end_user_agreement.pdf A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractThe interaction of shallow foundations with the underlying soil during dynamic loading can have both positive and negative effects on the behaviour of the superstructure. Although the negative impacts are generally considered within design codes, seldom is design performed in such a way as to maximise the potential beneficial characteristics. This is, in part due to the complexity of modelling the soil-structure interaction. Using the data from dynamic centrifuge testing of raft foundations on dry sand, a simple moment-rotation macro-element model has been developed which has been calibrated and validated against the experimental data. For the prototype tested, the model is capable of accurately predicting the underlying moment-rotation backbone shape and energy dissipation during cyclic loading. Utilising this model within a finite element model of the structure could potentially allow a coupled analysis of the full soil-foundation-structure system's seismic response in a simplified manner compared to other methods proposed in literature. This permits the beneficial soil-structure interaction characteristics, such as the dissipation of seismic energy, to be reliably included in the design process resulting in more efficient, cost-effective and safe designs.In this paper the derivation of the model will be presented including details of the calibration process. In addition, an appraisal of the likely resultant error of the model prediction will be presented and visual examples of how well the model mimics the experimental data will be

show abstract

Section: Introductionmentioning

confidence: 99%

A new macro-element model encapsulating the dynamic moment–rotation behaviour of raft foundations

Heron¹,

Haigh²,

Madabhushi³

2015

Géotechnique

View full text Add to dashboard Cite

show abstract

“…The yield displacement is defined by extending the slop, which is connected from the original point (zero force-displacement) to the lateral force level corresponding to the first yield of longitudinal reinforcement, up to the average lateral force level between that lateral force and the lateral strength. The ultimate displacement is defined at the drift when the cyclic response envelope drops below 80% of the lateral strength [7]. Table 2 summarizes the ductility performance for the comparison with similar previous test results.…”

Section: Quasi-static Cyclic Test Resultsmentioning

confidence: 99%

“…Several techniques have been developed to improve their seismic performance by increasing their energy dissipation capacity. The most popular approach to increase the energy dissipation capacity of the columns is the use of metallic yielding components at the base of the columns, such as mild steel bars [6,7], high-performance steel bars [8], exterior yielding braces [3,9], and shape memory alloy bars [10,11]. Steel or FRP jackets [12,13], ductile fiber-reinforced concrete [14], and ultra-high performance steel fiber concrete (UFC) segments [15] have also been adopted at the base of the columns, as well as non-metallic devices such as rubber pads [3], elastomeric bearing pads [13,16], and steel shear resistant connecting across segment joints including the base of the column [17].…”

Section: Introductionmentioning

confidence: 99%

Experimental test and seismic performance of partial precast concrete segmental bridge column with cast-in-place base

Kim¹,

Moon

Kim

et al. 2015

Engineering Structures

View full text Add to dashboard Cite

“…In a rocking column, the concrete in the unbonded region develops insignificant tensile strain. However, it remains susceptible to compression damage, including spalling of concrete cover [27][28][29]. Use of HyFRC in rocking columns has been shown to be effective in resisting compression damage at the rocking plane, improving the overall ductility of the column [13,14].…”

Section: Design Of Columnmentioning

confidence: 99%

Seismic response of a rocking bridge column using a precast hybrid fiber-reinforced concrete (HyFRC) tube

Nguyen

Trono

Panagiotou

et al. 2017

Composite Structures

View full text Add to dashboard Cite

Large-Scale Experimental Study of Precast Segmental Unbonded Posttensioned Concrete Bridge Columns for Seismic Regions

Cited by 232 publications

References 11 publications

A new macro-element model encapsulating the dynamic moment–rotation behaviour of raft foundations

A new macro-element model encapsulating the dynamic moment–rotation behaviour of raft foundations

Experimental test and seismic performance of partial precast concrete segmental bridge column with cast-in-place base

Seismic response of a rocking bridge column using a precast hybrid fiber-reinforced concrete (HyFRC) tube

Contact Info

Product

Resources

About