Modeling of end-plate bolted composite connection in fire considering axial force effects

Li, Guoqiang; Chen, Lingzhu; Li, Jiao-Ting; Lou, Guobiao

doi:10.1016/j.jcsr.2012.03.021

Cited by 17 publications

(9 citation statements)

References 8 publications

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“…They analyzed a large number of models and demonstrated that their revised design equation is highly accurate for calculating the bending moment in bolts and end-plates allowing for prying force. Li et al [19] studied the mechanical properties of flush end-plate composite joints under the combination of axial loading and elevated temperature conditions. Rahnavard et al [20] studied the behaviors of common types of rigid connections, including connections with an endplate, connections with a bolted cover plate, and bolted T joints, under the effect of heat using numerical FE methods with the ABAQUS software.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures

Liu

Cui

Zheng

et al. 2017

Advances in Materials Science and Engineering

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This paper proposes a site-bolted connection that is suitable for modularized prefabricated steel structures. Excellent ductility is achieved by various structural measures. Six connection specimens with different parameters were subjected to quasi-static loading tests and finite element analysis (FEA) to determine the seismic performance of the proposed connection (e.g., hysteretic behavior, skeleton curve, ductility, and failure mode). The results of the tests and FEA showed that the connection underwent sufficient plastic deformation under cyclic loading and that its ultimate rotation angle could reach 0.09 rad. A clear plastic hinge formed on the beam before the connection failed, which suggests a ductile failure mode. The connection exhibited a wide hysteresis loop, which indicated good seismic performance. The results also showed that the connection does not slip under small earthquakes and could dissipate energy through slippage in the connection region under a moderate earthquake and through slippage in the connection region as well as plastic deformation at the beam end under a severe earthquake. The number of bolts was the main parameter that affected the seismic performance of the connection. The test and FEA results demonstrated that all six specimens had excellent seismic and ductile performance and an exceptional plastic rotation capacity.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures

Liu

Cui

Zheng

et al. 2017

Advances in Materials Science and Engineering

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“…Moment of the composite joint at middle span of the specimens could be obtained using the suggested method in the companion paper [10] once the rotation of middle composite joint was known. The rotation of joints could be determined from the deflection profile if the δ m was given.…”

Section: Mid-span Moment M Ementioning

confidence: 99%

“…Shape parameter n, which defines the shape of moment-rotation relationship at high temperatures, was an important factor. From the comparison between predicted results and experimental data, it was suggested that the expressions of the shape parameter [10] gave a good performance. The neutral axis in the composite joint which defined the ultimate moment resistance combined with axial force moved from the steel beam section towards the concrete slab.…”

Section: Summariesmentioning

confidence: 99%

“…At the stage of catenary action of the beam, the axial tensile force and deflection increased gently and the bending moment of the joint kept declining. Because the composite joint could be considered as entering into a plastic status at this stage under the combined action of axial force and bending moment, the influence of the shape parameter could be ignored and the ultimate moment of the joint recommended in the companion paper [10] under the axial force F T action at temperature T could be directly used as moment resistance. The plastic neutral axis slowly moved towards the reinforcement.…”

Section: Summariesmentioning

confidence: 99%

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Experimental investigation on flush end-plate bolted composite connection in fire

Lou

et al. 2012

Journal of Constructional Steel Research

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“…Drawing on the results of pull-out tests, many researchers propose various models based on nonuniform distribution functions to predict the shear stress at the interface between the anchor and the surrounding rock. For example, the exponential distribution model 5,6 postulates that the shear stress on the surface of the anchor body is exponentially distributed along the long anchorage axis, and that the shear stress at the interface of the anchor attenuates from the proximal end to the distal end, that is, the shear stress reaches its peak value at the proximal end of the anchor. The hyperbolic model 7,8 proposes that the displacement and the shear stress between the anchoring agent and the interface decay with depth, following a hyperbolic function.…”

Section: Introductionmentioning

confidence: 99%

Load transfer mechanism and reinforcement effect of segmentally yieldable anchorage in weakly consolidated soft rock

Zhao

Tan

et al. 2018

SIMULATION

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Mine disasters, such as large deformation, floor heave, and roof fall, occur extremely easily in weakly consolidated soft rock strata in western China, posing enormous challenges to traditional anchorage support design. To avoid tensile failure of bolts as a result of the superposition effect of stress accumulation, a segmentally yieldable anchorage support, taking into consideration the different failure zones in surrounding rock, is presented in this paper. First, load transfer mechanisms and the process of anchorage failure are analyzed for end anchorage, full-length anchorage, and segmentally yieldable anchorage based on numerical pull-out tests. Results show that the load transfer follows a multipeak chain-like trend in the case of multipoint segmental anchorage, and that the peaks of stress attenuate slowly. Therefore, the proposed anchorage type can leverage the shear strength effectively. Furthermore, numerical models for the applications of the aforementioned three different anchoring modes to weakly consolidated soft strata are established. Results indicate that segmentally yieldable anchorage can withstand larger tensile deformation and surrounding rock deformation. Moreover, the bolt shows higher strength reservation. A combination of these characteristics is conducive to controlling deformation and damage during roadway excavation.

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Modeling of end-plate bolted composite connection in fire considering axial force effects

Cited by 17 publications

References 8 publications

Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures

Analysis of the Seismic Performance of Site-Bolted Beam to Column Connections in Modularized Prefabricated Steel Structures

Experimental investigation on flush end-plate bolted composite connection in fire

Load transfer mechanism and reinforcement effect of segmentally yieldable anchorage in weakly consolidated soft rock

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