Seismic Performance and Construction Method of Bridge Columns with Interlocking Spiral/Hoop Reinforcement

Igase, Y.; Nomura, Kunikatsu; Kuroiwa, Toshiyuki; Miyagi, Toshiaki

doi:10.3151/coj1975.40.2_37

Cited by 8 publications

(2 citation statements)

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“…Material properties and other important parameters of these columns are listed in Table 1. More details about specimen design and test results of all columns presented herein can be found in the references [5][6][7][8][9][10][11][12]. It is noticed that the properties of materials in Table 1 are actual strengths.…”

Section: Column Databasementioning

confidence: 99%

“…1(c)), which was developed from single-spiral (Fig. 1(b)) by adding one more spiral for oblong cross-section, was first studied by many researchers [5][6][7][8][9][10][11]. In order to reduce spiral size for large bridge columns and apply automation construction technology in the production of spiral reinforcement, Ou et al [8,12] have proposed seven-spiral for oblong columns (Fig.…”

Section: Introductionmentioning

confidence: 99%

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Shear strength model and prediction of failure mode for multi-spiral column

Huy

Tan

Hong

2021

STCE

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The damage of reinforced concrete columns due to shear is often serious, so this type of failure should be avoided from the design. In this paper, a model derived based on the discrete computational method is proposed to calculate the shear strength of column carried by multi-spiral transverse reinforcement, accounting for the effect of compression depth. Furthermore, based on this model, a method is proposed to predict the failure mode of multi-spiral columns. The test database of multi-spiral columns from previous studies is used to validate both the shear strength and failure mode predictions. The proposed model with a crack angle of 40 degrees gives the best estimation of the shear strength of multi-spiral columns, and the proposed method predicts well the failure mode of these columns. To avoid shear failure, the ratio of the minimum shear strength calculated from the proposed model with a crack angle of 40 degrees to the shear force based on the moment-curvature analysis is suggested to be larger than 1.2.

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