Compressive behaviours of novel SCS sandwich composite walls with normal weight concrete

Yan, Jia-Bao; Wang, Zhe; Luo, Yunbiao; Wang, Tao

doi:10.1016/j.tws.2019.01.051

Cited by 30 publications

(16 citation statements)

References 35 publications

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“…The previous 16 compression tests on DSCWs reported in [7,8,9] and 6 tests reported in [23,27] were used to validate the ultimate compressive bearing capacity, load-displacement curves and failure modes of the developed FEM.…”

Section: Validations and Discussionmentioning

confidence: 99%

“…The compressive performance of the DSCWs is simulated by the general finite element package ABAQUS [30], and the implicit solver is used for the analysis solutions. To improve the accuracy of the FEM, the different components of the DSCW reported in [7,8,9], e.g., sandwiched concrete, steel LVDT plate, loading/end plates and stiffeners, were modelled in detail. The geometric dimensions, mesh, material model, modelling of the connectors, steel-concrete interactions, loading and boundary conditions of the FEM are described in the following sections.…”

Section: Generalmentioning

confidence: 99%

“…Fig. 2 and Table 1 present the detailed geometric dimensions of the DSCWs reported in [7,8,9], and the variables of the geometric dimensions include the steel plate thickness and connector space.…”

Section: Geometric Dimensions and Mesh Of The Femmentioning

confidence: 99%

“…where σsT denotes the steel plate stress under compression; As denotes the steel plate cross-sectional area, As=W*ts; and W and ts are the width and thickness of the steel plate, respectively. Two failure modes of the steel plate determined by the spacing-to-thickness ratio (SV/ts) are observed in the DSCW [7], namely, buckling failure and yield failure. When SV/ts is less than the critical value, η, the steel plate undergoes yield failure where the steel plate yields and then buckles with the constitutive equation given in Fig.…”

Section: Theoretical Model Of the Steel Platementioning

confidence: 99%

“…1 Application of the DSCW in Arctic offshore platforms [9] The compressive performance of DSCWs at low temperatures has been experimentally studied in Refs. [7][8][9]. However, these experimental studies proved to be costly and time consuming, and these tests have limitations in that the influences of the vertical and horizontal spacing of the connectors on the compressive performance of DSCWs at low temperatures have not been thoroughly researched.…”

Section: Introductionmentioning

confidence: 99%

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Numerical and Theoretical Studies on Double Steel Plate Composite Walls Under Compression at Low Temperatures

2021

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Double steel plate composite walls (DSCWs) with several unique types of connectors have been implemented to protect offshore oil exploration platforms from concentric forces caused by ice in the Arctic region. This paper investigates the compressive perfor-mance of DSCWs with interlocked J-hooks and overlapped headed studs at low temperatures ranging from 20 ℃ to -80 ℃ with nonlinear finite element models (FEMs). The intricate geometric size of the concrete, multiple interactions of the concrete with the connectors, and material nonlinearities of the concrete have been thoroughly simulated. The reasonable consistency between the results of the monotonic tests and finite element analysis (FEA) on nine DSCWs with interlocked J-hooks and seven DSCWs with overlapped headed studs indicates that the FEMs can effectively predict the compressive performance of the DSCWs at low temper-atures. On the basis of the validated FEMs, the effects of the horizontal and vertical spacing of the connectors on the compressive performance of the DSCWs are studied. Finally, theoretical models of the load-displacement curves are developed to reveal the compressive response of DSCWs at low temperatures with different types of connectors, taking into account the restraining effect of steel plates on the inner concrete and the local buckling of steel plates. Compared with previous tests and FEA, the developed theoretical models have reasonable consistency for the load-displacement curves of DSCWs at low temperatures.

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