Direct Strut-and-Tie Model for Prestressed Deep Beams

Tan, Kang Hai; Tong, K.; Tang, C. Y.

doi:10.1061/(asce)0733-9445(2001)127:9(1076)

Cited by 68 publications

(48 citation statements)

References 6 publications

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“…To take account of the effect of web reinforcement, Tan et al [20,21], developed a general strut-and-tie model for both prestressed and non-prestressed deep beams, with and without web reinforcement. Extended from Mohr-Coulomb failure criterion, Tan et al [20] proposed an equation for the ultimate shear strength V n .…”

Section: Size Effect Predicted From Strut-and-tie Modelmentioning

confidence: 99%

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Size effect in RC deep beams: Experimental investigation and STM verification

Zhang

Tan

2007

Engineering Structures

135

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Section: Size Effect Predicted From Strut-and-tie Modelmentioning

confidence: 99%

“…Extended from Mohr-Coulomb failure criterion, Tan et al [20] proposed an equation for the ultimate shear strength V n . Later, Zhang and Tan [22] improved the STM for greater prediction consistency and accuracy (referred to as "original STM"), and proposed the expression for V n as follows:…”

Section: Size Effect Predicted From Strut-and-tie Modelmentioning

confidence: 99%

Size effect in RC deep beams: Experimental investigation and STM verification

Zhang

Tan

2007

Engineering Structures

135

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“…Tan et al [10] proposed the following expression to obtain the failure load for prestressed deep beams depending on a new failure criterion for the bottom nodal zone as detailed in Fig. 4.…”

Section: Tan's Model For Deep Prestressed Beammentioning

confidence: 99%

“…The failure mode of slab was flexural shear. 10 The failure load and stress ratios for slabs S5-250-1 and 2 …”

Section: Step-1 Selecting Centerlines Of the Struts And Tiesmentioning

confidence: 99%

Analysis and Design of Prestressed Precast Hollow Core Slabs Using Strut and Tie Method

2012

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Strut-and-tie model (STM) is increasingly being used for analysis and design of concrete structures with D-regions, a disturbed region in which the basic assumptions of flexural theory are not applicable such as regions near force discontinuities or near geometric discontinuities. The strut-and-tie approach has also been recently incorporated in the ACI Building Code as an alternative design method. The main advantage of the strut-and-tie model is its transparency and adaptability to prestressed and reinforced concrete members with arbitrary geometry and loading configuration. The internal stresses due to applied loading in the concrete structural elements are transferred through an assumed plane or space truss mechanism to the supports. Precast hollow core slabs are being extensively used in modern commercial and residential buildings. These simply supported slabs are prestressed concrete members with tensile prestressing steel without any web reinforcement, and can be critical in shear for certain loading configuration and thicker slabs. A new strut-and-tie model is proposed to predict the ultimate load-carrying capacity, failure mode and design of prestressed precast hollow core slabs (PPHC slabs). In the proposed model for PPHC slabs without web reinforcement, the compression forces are resisted by concrete compression struts, the tension forces are resisted by prestressing tendons (tension tie) and the tensile forces in the web are resisted by concrete tension elements (concrete ties). The results obtained from the proposed STM model using the software CAST (computer-aided strut and tie) is compared with those obtained from full-scale loading tests conducted on 15 PPHC slabs of different shear span to depth ratio. The proposed strut-and-tie model provides a good correlation with the experimental results and the method can be easily used for analysis and design of hollow core slabs.

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“…than a visible formula, which was apparently inconvenient for design. Tan et al [12] have also developed a direct STM for simply supported prestressed concrete deep beams and brought forward a relevant formula. Instead of defining the stress limits empirically for the STM components, as was done by the Alshegeir and Ramirez [3], they utilized a linear failure criterion modified from the Mohr-Coulomb theory to take into account concrete softening effect directly, which seemed more convenient and theoretical.…”

Section: Introductionmentioning

confidence: 99%