Structural reliability of ultra-high-performance fiber reinforced concrete beams in shear

被引：8

作者：

Simwanda, Lenganji ^{[1
]}

De Koker, Nico ^{[1
]}

Viljoen, Celeste ^{[1
]}

Babafemi, Adewumi John ^{[1
]}

机构：

[1] Stellenbosch Univ, Dept Civil Engn, Stellenbosch, South Africa

来源：

STRUCTURAL CONCRETE | 2023年 / 24卷 / 02期

关键词：

model uncertainty; NLFEA; structural reliability; UHPFRC shear models; ultra-high-performance fiber reinforced concrete; STRENGTH; UNCERTAINTIES; BEHAVIOR;

D O I：

10.1002/suco.202200342

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A study on the shear model uncertainty and structural reliability of ultra-high-performance fiber reinforced concrete (UHPFRC) beams with stirrups is presented. Model uncertainty for the shear models given in the JSCE, AFGC and ACI 544 standards are characterized by comparison to nonlinear finite element analyses (NLFEA). In comparison to other shear basic parameters, a notable negative correlation between model uncertainty the transverse shear reinforcement ratio (rho(w)f(ywm)) is observed. When combined with stochastic descriptions of the remaining parameters that describe these analytical models, reliability values for beams designed to the JSCE and AFGC specifications are found to fall 6%, and 12%, respectively, below the target values of these standards, while reliability values for the ACI 544 exceed the target value specified for this standard by 8%.

引用

页码：2862 / 2878

页数：17

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