Web shear failure of angle-cleat connections loaded at high rates

Rahbari, Rahi; Tyas, A.; Davison, Buick; Stoddart, Euan

doi:10.1016/j.jcsr.2014.07.013

Cited by 33 publications

(12 citation statements)

References 11 publications

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“…Dynamic increase factors provided by design guidelines were reviewed based on these studies. Tyas et al [9] and Rahbari et al [10] developed a comprehensive test rig to study the behaviour of web cleat joints loaded by pneumatically activated rams. Failure modes and different governing parameters (such as the thickness of web cleats) were investigated.…”

Section: Introductionmentioning

confidence: 99%

08.51: An experimental study of composite beam‐column joints subject to impact loads

2017

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Beam-column joints are one of the key elements in steel and composite frames. Till now, many research studies have focused on the behaviour of bare steel beam-column joints and the influence of composite slabs subjected to quasi-static loads. In this study, the research was extended to dynamic loading condition. Two beam-column joint specimens with composite slabs, which were designed based on Eurocode 4, were tested using an MTS drop-weight machine. This loading condition is probably more realistic for joints under progressive collapse scenario, which is a dynamic process. One of the specimens was a middle joint subject to sagging moment. The other specimen was a side joint subject to hogging moment. Behaviour of both joint specimens, including impact force, displacement of the middle column, strain and failure mode, was presented. Differences in the behaviour of the two joint specimens were observed and explained.

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Section: Introductionmentioning

confidence: 99%

08.51: An experimental study of composite beam‐column joints subject to impact loads

2017

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“…Joints with various connections were tested and it was found that the joints can behave in a very ductile manner, even when subjected to high strain-rates. Recently a research group in England started an extensive test program of dynamic tests on bolted steel joints, where single-sided beam-to-column joints loaded at very high strain rates are studied [4,10,11]. They report that dynamic effects increased the stiffness and decreased the ductility of joints with the flexible end-plate connections [4].…”

Section: Introductionmentioning

confidence: 99%

An experimental study of static and dynamic behaviour of bolted end-plate joints of steel

Grimsmo

Clausen

Langseth

et al. 2015

International Journal of Impact Engineering

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Many actions, such as accidental or malicious explosions, may impose high loading rates to structural frames. To enhance the knowledge of the behaviour of joints subjected to severe impulsive loading, a double-sided beam-to-column joint configuration was tested at quasi-static and dynamic loading rates. The test specimens consisted of H-section beams and columns, extended end-plates, and high-strength bolts. In both the quasi-static and dynamic tests, the fracture modes were bolt failure in combination with plastic deformation of the end-plates. However, it was observed that the joints absorbed considerably more energy before failure in the dynamic tests than in the quasi-static tests, partly due to changes in the deformation modes. Also, the ductility of the joints seemed to increase for higher loading rates. These results suggest that the tested joints behave in a preferable manner under extreme impulsive loads.

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“…In these documents, a column removal scenario was proposed to simulate the initial damage caused by abnormal loading conditions, which was effective in blast-induced damage to columns tested by Karns et al [3]. Several research studies were conducted on bare steel beam-column joints in structural frames under column removal scenarios, including both quasi-static [4] and dynamic [5][6][7][8][9] tests. However, tests considering the contribution of composite slab were limited to quasi-static [10][11][12] loads, although progressive collapse is a dynamic process in nature.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of composite effect on the behaviour of beam-column joints subjected to impact load

Chen

Tan

2018

Proceedings 12th International Conference on Advances in Steel-Concrete Composite Structures - ASCCS 2018

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This paper presents an experimental study on structural behaviour of composite beamcolumn joints under a middle column removal scenario. Specimens were subjected to impact loads from an MTS drop-weight testing machine. Two joints with welded unreinforced beam flange and bolted web connections were designed per AISC 360-10. One of the beam-column joints had a thicker composite slab. The joints were restrained by pinned supports at two beam ends, which were connected to rigid A-frames to represent boundary conditions from adjacent structures. Test results indicated that the composite slab significantly affected the impact force due to an increase of inertia. However, other structural responses (especially displacement of the middle column) decreased due to increase of stiffness contributed by the thicker composite slab. The finding was that increasing thickness of composite slab can increase the resistance of composite joint significantly due to increased composite effect. More experimental studies were conducted to investigate other types of joints.

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Web shear failure of angle-cleat connections loaded at high rates

Cited by 33 publications

References 11 publications

08.51: An experimental study of composite beam‐column joints subject to impact loads

08.51: An experimental study of composite beam‐column joints subject to impact loads

An experimental study of static and dynamic behaviour of bolted end-plate joints of steel

An experimental study of composite effect on the behaviour of beam-column joints subjected to impact load

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