Reinforced Concrete Membrane Elements with Perforations

Vecchio, Frank J.; Chan, Chi Chiu

doi:10.1061/(asce)0733-9445(1990)116:9(2344)

Cited by 19 publications

(6 citation statements)

References 1 publication

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“…An example of comparison between the exact local stress field analysis and experimental results of Vecchio and Chan [23] is shown in Fig. 13.…”

Section: Exact Local Stress Field Analysis With Crack Propagationmentioning

confidence: 99%

“…2 and 3) and contribution of different mechanisms to overall response can be expressed on the local stress at crack location and/or average stress conditions as it is computed in the smeared crack-based FEM. For more clarification, comparison between the exact local stress field analysis and experimental results for RC panel PC7 [23] is shown in Fig. 14, which identifies the individual contribution of cracked concrete and steel bars to overall response in terms of both local stress at crack plane (Fig.…”

Section: Exact Local Stress Field Analysis With Crack Propagationmentioning

confidence: 99%

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Localized nonlinearity and size-dependent mechanics of in-plane RC element in shear

Soltani¹,

An²,

Maekawa³

2005

Engineering Structures

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“…An example of comparison between the exact local stress field analysis and experimental results of Vecchio and Chan [23] is shown in Fig. 13.…”

Section: Exact Local Stress Field Analysis With Crack Propagationmentioning

confidence: 99%

Section: Exact Local Stress Field Analysis With Crack Propagationmentioning

confidence: 99%

Localized nonlinearity and size-dependent mechanics of in-plane RC element in shear

Soltani¹,

An²,

Maekawa³

2005

Engineering Structures

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“…Table 1 summarizes the experimental results of Pang and Hsu [9] , Vecchio and Collins [22] , Chintrakarn [23] , Zhang and Hsu [12] , Porasz [24] , Biedermann [25] , Vecchio and Chan [26] & Vecchio et al [27] , Yamaguchi et al, [28] , Andre [29] , Marti and Meyboom [30] , Kirschner and Collins [31] and Khalifa [32] available in the literature for 66 elements tested under pure shear. The details of the elements are listed in columns 1 to 7.…”

Section: Verification Of Proposed Analysis Methodsmentioning

confidence: 99%

Supramolecular Porphyrin–DABCO Array in Single‐ and Double‐Stranded Polynorbornenes

Wang

Chen

Lim

et al. 2010

Chemistry An Asian Journal

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Zinc-porphyrin-appended norbornene derivative 6, the corresponding dimer 7, coherently aligned single-stranded polynorbornene 5, and zinc-porphyrin-linked double-stranded polymeric ladderphane 3 have been used for complexation with 1,4-diazabicyclo[2.2.2]octane (DABCO) to generate an array of porphyrin-DABCO supramolecular scaffolds. The stoichiometries of the complex formation are analyzed in detail by (1)H NMR spectroscopy as well as absorption and emission spectroscopic methods. Bidentate ligand DABCO is found to form with 7, 5, and 3 to give 2-to-1 porphyrin-DABCO sandwich structures. Monomer 6, on the other hand, forms a 2-to-1 porphyrin-DABCO sandwich structure at high concentration (20 mM), but a 1-to-1 porphyrin-DABCO complex at low concentration (10(-6) M). Time-resolved fluorescence decays revealed a similar behavior for the 2-to-1 porphyrin-DABCO sandwich structures that are formed from 3, 5, and 7.

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“…This figure also suggests that the ACI approach may overestimate the beneficial effects of compression. 31 Table 1 summarizes essentially all of the experimental results 18,[20][21][22][29][30][32][33][34][35][36][37][38] available to the authors for reinforced concrete elements loaded in pure shear or shear combined with uniaxial stress (that is, f z = 0). These 102 ).…”

Section: Deg)mentioning

confidence: 99%

Simplified Modified Compression Field Theory for Calculating Shear Strength of Reinforced Concrete Elements

Bentz¹,

Vecchio²,

Collins³

2006

126

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This paper summarizes the results of over 100 pure shear tests on reinforced concrete panels. The ACI approach for predicting shear strength as the sum of a diagonal cracking load and a 45-degree truss model predicts the strength of these panels poorly, with an average experimental-over-predicted shear strength ratio of 1.40 with a coefficient of variation of 46.7%. Based on a subset of these experiments, an expressive but relatively complex analysis method called the modified compression field theory (MCFT) was developed in the 1980s that is able to predict full load deformation relationships. This theory can predict the shear strength of these panels with an average shear strength ratio of 1.01 and a coefficient of variation (COV) of only 12.2%. This paper presents a new simplified analysis method that can predict the strength of these panels in a method suitable for "back of the envelope" calculations. This new method gives an average shear strength ratio of 1.11 with a COV of 13.0%. The application of this new simplified method to panels is demonstrated with numerical examples.

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Reinforced Concrete Membrane Elements with Perforations

Cited by 19 publications

References 1 publication

Localized nonlinearity and size-dependent mechanics of in-plane RC element in shear

Localized nonlinearity and size-dependent mechanics of in-plane RC element in shear

Supramolecular Porphyrin–DABCO Array in Single‐ and Double‐Stranded Polynorbornenes

Simplified Modified Compression Field Theory for Calculating Shear Strength of Reinforced Concrete Elements

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