Ductility of Steel Short Cylinders in Compression and Bending

Gao, Shengbin; Usami, Tsutomu; Ge, Hanbin

doi:10.1061/(asce)0733-9399(1998)124:2(176)

Cited by 45 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For pipe section stub-columns in compression and bending, an empirical equation for the critical length (i.e., the length giving the lowest strength) was proposed by Gao et al [3], and this length is found to be about half of the mode length of collapse in local buckling (i.e., the so-called elephant foot bulge) observed in long columns with pipe sections under cyclic lateral loading [30].…”

Section: Effective Failure Lengthmentioning

confidence: 99%

“…During the past years, there is a considerable amount of literatures on failure criterion. The bending failure criterion has been deeply studied in previous studies [1,[3][4][5]19]. Besides, the shear failure criterion was studied [20,21].…”

Section: Introductionmentioning

confidence: 99%

“…However, since then the necessity of accounting for the effect of shear failure in the phase of seismic design has been gradually realized. In the past years, the performance of bending failure has been deeply investigated [1][2][3][4][5][6]. For the shear failure of steel pier frames due to the shear local buckling, the experimental investigations have been conducted [7,8], but the corresponding evaluation method is sparse and specific quantitative criterion to relate these failure modes to steel bridge piers is lacking.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Strength and Ductility Evaluation Method for Steel Bridge Pier Frames Considering Effect of Shear Failure

Kang¹,

Ge²

2012

Volume 8 Number 4

View full text Add to dashboard Cite

This paper presents a practical evaluation method for predictions of strength and ductility capacity of steel bridge pier frames including effects of shear failure. The shearing behavior of structure is simulated by introducing membrane and truss elements at the mid-span of girder. In order to investigate the effects of shear failure on the strength and ductility capacity, a series of pushover analyses are carried out, comparisons between different methods are conducted and effects of sensitive parameters are discussed. From these investigations and discussions, the availability of the shear ductility prediction method proposed in this study is verified, especially for the unstiffened cases with large web width-thickness ratio of girder. Furthermore, a boundary between bending and shear failure modes is obtained based on discussions.

show abstract

Section: Effective Failure Lengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strength and Ductility Evaluation Method for Steel Bridge Pier Frames Considering Effect of Shear Failure

Kang¹,

Ge²

2012

Volume 8 Number 4

View full text Add to dashboard Cite

show abstract

“…the length which provides the minimum ultimate strength, are adopted. The empirical formula (2) proposed by Gao et al [11] is employed.…”

Section: Analyzed Modelsmentioning

confidence: 99%

“…As for steel bridge piers subjected to combined compression and bending, a number of experiments and numerical analyses have shown that local buckling of thin-walled steel structures always happens in the compressive flange within the effective failure range [7][8][9][10] and that maximum structural ductility is governed by the capacity of this critical local part. The ductility of this part was investigated by Gao et al [11] through numerical analysis of short cylinders subjected to monotonic loading.…”

Section: Introductionmentioning

confidence: 99%

Bending behavior of short steel cylinders under axial force fluctuations

Çetinkaya

Nakamura

Takahashi

2008

Engineering Structures

View full text Add to dashboard Cite

During earthquake excitations, axial forces fluctuate together with bending moment fluctuations, especially in portal frame bridge piers and the arch-ribs of arch bridges. Conventionally, however, the axial force is treated as constant when evaluating the capacity of structures under seismic loading. In this paper, the influence of axial force fluctuations on the maximum strength and ductility of short steel cylinders is considered in an effort to establish practical formulations for the seismic design of steel bridge members with pipe sections. Elastoplastic large-displacement analysis is carried out on parametric models generated by setting the radius-thickness ratio as the main structural parameter. Bending behavior under constant and fluctuating axial force is compared, where the final value of considered axial force fluctuation is the same as the axial force magnitude in the constant axial force case. It is found that the moment and ductile capacity corresponding to the post-peak region of bending behavior are significantly improved when the axial force fluctuation is considered. Design formulae for failure strain taking into account this capacity improvement are proposed for different limit states. The validity of the proposed formulae is demonstrated through numerical analysis.

show abstract

Seismic performance evaluation of steel arch bridges against major earthquakes. Part 1: dynamic analysis approach

Usami

et al. 2004

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

SUMMARYIn this study the inelastic behavior of steel arch bridges subjected to strong ground motions from major earthquakes is investigated by dynamic analyses of a typical steel arch bridge using a three-dimensional (3D) analytical model, since checking seismic performance against severe earthquakes is not usually performed when designing such kinds of bridge. The bridge considered is an upper-deck steel arch bridge having a reinforced concrete (RC) deck, steel I-section girders and steel arch ribs. The input ground motions are accelerograms which are modiÿed ground motions based on the records from the 1995 Hyogoken-Nanbu earthquake. Both the longitudinal and transverse dynamic characteristics of the bridge are studied by investigation of time-history responses of the main parameters. It is found that seismic responses are small when subjected to the longitudinal excitation, but signiÿcantly large under the transverse ground motion due to plasticization formed in some segments such as arch rib ends and side pier bases where axial force levels are very high. Finally, a seismic performance evaluation method based on the response strain index is proposed for such steel bridge structures.

show abstract

Ductility of Steel Short Cylinders in Compression and Bending

Cited by 45 publications

References 7 publications

Strength and Ductility Evaluation Method for Steel Bridge Pier Frames Considering Effect of Shear Failure

Strength and Ductility Evaluation Method for Steel Bridge Pier Frames Considering Effect of Shear Failure

Bending behavior of short steel cylinders under axial force fluctuations

Seismic performance evaluation of steel arch bridges against major earthquakes. Part 1: dynamic analysis approach

Contact Info

Product

Resources

About