Experimental Investigation of Inelastic Cyclic Buckling and Fracture of Steel Braces

Fell, Benjamin; Kanvinde, Amit; Deierlein, Gregory G.; Myers, Andrew C.

doi:10.1061/(asce)0733-9445(2009)135:1(19)

Cited by 180 publications

(88 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 Table 1 indicates that the measured yield strength for the beam and columns and HSS braces was 16 50% stronger than their respective specified minimum value. Similarly large measured-to-17 nominal yield strength ratios have been reported by Lehman et al (2008), Roeder et al (2011), 18 andFell et al (2009) for ASTM A500 material. Interestingly, the measured yield strength for the 19 gusset plate, 204 MPa, did not meet the specified minimum value of 245 MPa.…”

Section: Introductionsupporting

confidence: 76%

“…Fracture in the critical section was considered by tracking the strain history in 14 each fiber and assigning zero stiffness to any fiber that exceed the low-cycle fatigue limit defined 15 by a rain-flow-count rule. The low-cycle fatigue limit was calibrated against quasi-static tests on 16 square-HSS braces by Fell et al (2009) andBlack et al (1980) …”

Section: Numerical Simulation 17mentioning

confidence: 99%

“…The peak strain rate, obtained by dividing the loading rate by the 4 brace length of 2,300 mm, was 0.015, 0.03, 0.06, and 0.2 per second, respectively, for the four 5 motions. Fell et al (2009) compared a dynamically loaded HSS brace specimen with a peak rate 6 of 150 mm/s (peak strain rate of 0.05 per second) and an identical, quasi-statically loaded 7 specimen and observed little influence of loading rate. The loading rate achieved in this project 8 was four times that reported by Fell et al Considering the short fundamental period of the 9 specimen (0.21 sec), this loading rate may represent an upper bound for strain rates experienced 10 by braces in a reasonably designed CBF.…”

Section: Loading Ratementioning

confidence: 99%

See 2 more Smart Citations

Dynamic Response of a Chevron Concentrically Braced Frame

et al. 2013

View full text Add to dashboard Cite

Abstract:Large-scale shake table tests were conducted at E-Defense, Japan, to examine the 4 dynamic response of a steel concentrically braced frame. The specimen was a single-bay, single-5 story frame with a pair of square-HSS braces placed in a chevron arrangement. The gusset plates 6 connecting the brace to the framing elements were provided with an elliptic fold line to 7 accommodate out-of-plane rotation of the brace in compression. The specimen was subjected 8 repeatedly to a unidirectional ground motion with increasing magnitude until the braces buckled 9 and eventually fractured. The bracing connections performed as intended; the gusset plates 10 folded out-of-plane and no crack was observed in the gusset plate or in the critical welds. 11Consequently, the test results demonstrated excellent performance of the bracing connections. 12Elastic deformation of the beam prevented the braces from developing their full tensile strength. 13Yielding in the middle of the beam, which was predicted by monotonic loading analysis, did not 14 occur. The specimen response was reproduced by a numerical model using fiber elements. This 15 model was able to predict the occurrence of brace buckling and fracture and thereby, accurately 16 trace the dynamic behavior of the frame. 17

show abstract

Section: Introductionsupporting

confidence: 76%

Section: Numerical Simulation 17mentioning

confidence: 99%

Section: Loading Ratementioning

confidence: 99%

See 1 more Smart Citation

Dynamic Response of a Chevron Concentrically Braced Frame

et al. 2013

View full text Add to dashboard Cite

show abstract

“…After several inelastic cycles, the cross-section locally buckles and forms a more concentrated hinge, amplifying the strain and eventually leading to fracture initiation at the center of the brace. A detailed discussion of this type of behavior and the factors controlling it is summarized in [11]. Table 1 lists the maximum recorded tensile forces, P max , for all seventeen experiments.…”

Section: Summary Of Experimental Resultsmentioning

confidence: 99%

Tensile forces for seismic design of braced frame connections — Experimental results

Fell¹,

Kanvinde²

2010

Journal of Constructional Steel Research

View full text Add to dashboard Cite

“…Studies in the subject area were directed mainly towards the cyclic behaviour of compression elements of frame bracings in relation to collapse investigations of tall buildings in the seismic zone, see Ikeda and Mahin [11], Gan and Hall [12], Jin and El-Tawil [13], Fell et al [14] and Davaran and Adelzadeh [15], among others. Furthermore, investigations were also carried out with regard to the elastic-plastic behavior of highly hyper-static spatial grid structures, see Łubiński et al [16], Barszcz [17], Karczewski and Barszcz [18], Kato et al [19], Ogawa et el.…”

Section: Introductionmentioning

confidence: 99%

Experimentally Assisted Modelling of the Behaviour of Steel Angle Brace

Barszcz

2014

Archives of Civil Engineering

View full text Add to dashboard Cite

Steel frame wind bracing systems are usually made of hot rolled profi les connected to frame elements directly or through a gusset plate. The behaviour of angle bracing members is generally complex since controlled by tension or compression, bending and torsion. The common practice is to transform the problem of complex behaviour into the buckling strength of a truss member. This paper deals with an analytical formulation of the force-deformation characteristic of a single angle brace subjected to compression. A strut model takes into consideration the effect of brace end connections and softening effect of its force-deformation characteristic. Two different boundary conditions, typical for engineering practice, are dealt with. Experimental program of testing the behaviour of angle brace in portal sub-frame specimens is described. Results of experimental investigations are presented. They are used for the validation of developed model. Conclusions are formulated with reference to the application of validated brace model in the analysis of braced steel frameworks.

show abstract

Experimental Investigation of Inelastic Cyclic Buckling and Fracture of Steel Braces

Cited by 180 publications

References 14 publications

Dynamic Response of a Chevron Concentrically Braced Frame

Dynamic Response of a Chevron Concentrically Braced Frame

Tensile forces for seismic design of braced frame connections — Experimental results

Experimentally Assisted Modelling of the Behaviour of Steel Angle Brace

Contact Info

Product

Resources

About