Statistical properties and material partial factors of ECC material based on shear failure member

Statistical properties and material partial factors of ECC material based on shear failure member

Engineered Cementitious Composite (ECC) material, as a hybrid material, also has uncertainties. In addition, the shear failure mechanism of reinforced ECC (R-ECC) member is different from that of ordinary reinforced concrete (RC) member, and a new material partial factor of ECC is needed. This paper...

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Bibliographic Details
Main Authors: Shixiang Yi, Zhongping Tang, Wei Shi, Fan Feng, Xiang Liu
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Materials
Subjects:
reliability
engineered cementitious composite
material partial factor
limit state function
Monte Carlo simulation
Online Access:https://www.frontiersin.org/articles/10.3389/fmats.2024.1534658/full
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Summary:Engineered Cementitious Composite (ECC) material, as a hybrid material, also has uncertainties. In addition, the shear failure mechanism of reinforced ECC (R-ECC) member is different from that of ordinary reinforced concrete (RC) member, and a new material partial factor of ECC is needed. This paper conducted experiments for the statistical mechanics of ECC strength. The shear failure test data of 36 R-ECC members were collected, and four representative bearing capacity calculation models were also collected and assessed. Then, the limit state function of the shear capacity of R-ECC beams was derived, and the reliability indexes were calculated. To evaluate the ECC material partial factor reasonably, it was calibrated. The results indicate that ECC strength obeys a normal distribution, and the coefficient of variation can be taken as 6.0%. The calculated reliability index will increase with the increase of the material partial factor and the increase of the ratio k between dead load and live load. Considering the different k values comprehensively, for the guidelines GB 50068-2018, CSA S806, ACI 440.2R, CIDAR, fIB TG 9.3 and UK TR 55, the recommended values for the material partial factor are 1.20, 1.10., 1.15, 1.55, 1.05, and 1.05, respectively.
ISSN:2296-8016

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