Improved probabilistic design method to quantify the fracture properties of roller compacted concrete

IF 5 2区工程技术 Q1 ENGINEERING, MECHANICAL

Theoretical and Applied Fracture Mechanics Pub Date : 2024-10-23 DOI:10.1016/j.tafmec.2024.104725

Lielie Li , Jikang An , Junfeng Guan , Chaopeng Xie , Lei Zhang , Aihong Han

{"title":"Improved probabilistic design method to quantify the fracture properties of roller compacted concrete","authors":"Lielie Li , Jikang An , Junfeng Guan , Chaopeng Xie , Lei Zhang , Aihong Han","doi":"10.1016/j.tafmec.2024.104725","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, the material parameters pertaining to fracture properties of Roller Compacted Concrete (RCC) were evaluated using the boundary element method (BEM). The fictitious crack growth length <span><math><mrow><mi>Δ</mi><msub><mi>a</mi><mtext>fic</mtext></msub></mrow></math></span> is determined by the relative size <span><math><mrow><mrow><mo>(</mo><mi>T</mi><mo>-</mo><msub><mi>a</mi><mn>0</mn></msub><mo>)</mo></mrow><mo>/</mo><msub><mi>d</mi><mi>i</mi></msub></mrow></math></span>, while the individualized values of material parameters <span><math><mrow><mo>(</mo><msub><mi>K</mi><mtext>IC</mtext></msub><mo>&</mo><msub><mi>f</mi><mtext>t</mtext></msub><mo>)</mo></mrow></math></span> of RCC for different water-to-cement ratios were obtained. In this study, the three-parameter Weibull fracture statistical model was proposed for the first time to analyze the discreteness of these individualized values of material parameters <span><math><mrow><mo>(</mo><msub><mi>K</mi><mtext>IC</mtext></msub><mo>&</mo><msub><mi>f</mi><mtext>t</mtext></msub><mo>)</mo></mrow></math></span> of RCC. The statistical analysis minimum value of material parameters <span><math><mrow><mo>(</mo><msub><mi>K</mi><mtext>IC</mtext></msub><mo>&</mo><msub><mi>f</mi><mtext>t</mtext></msub><mo>)</mo></mrow></math></span> of each group is obtained. The failure curves of each group of RCC were predicted from the three-parameter Weibull fracture statistical model, and the simple calculation model for material parameters <span><math><mrow><mo>(</mo><msub><mi>K</mi><mtext>IC</mtext></msub><mo>&</mo><msub><mi>f</mi><mtext>t</mtext></msub><mo>)</mo></mrow></math></span> was validated. Further, a two-point design method was proposed for RCC material parameters <span><math><mrow><mo>(</mo><msub><mi>K</mi><mtext>IC</mtext></msub><mo>&</mo><msub><mi>f</mi><mtext>t</mtext></msub><mo>)</mo></mrow></math></span> with varying strengths and water-to-cement ratios.</div></div>","PeriodicalId":22879,"journal":{"name":"Theoretical and Applied Fracture Mechanics","volume":null,"pages":null},"PeriodicalIF":5.0000,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Theoretical and Applied Fracture Mechanics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167844224004750","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this paper, the material parameters pertaining to fracture properties of Roller Compacted Concrete (RCC) were evaluated using the boundary element method (BEM). The fictitious crack growth length

Δ a_{fic}

is determined by the relative size

(T - a_{0}) / d_{i}

, while the individualized values of material parameters

(K_{IC} & f_{t})

of RCC for different water-to-cement ratios were obtained. In this study, the three-parameter Weibull fracture statistical model was proposed for the first time to analyze the discreteness of these individualized values of material parameters

(K_{IC} & f_{t})

of RCC. The statistical analysis minimum value of material parameters

(K_{IC} & f_{t})

of each group is obtained. The failure curves of each group of RCC were predicted from the three-parameter Weibull fracture statistical model, and the simple calculation model for material parameters

(K_{IC} & f_{t})

was validated. Further, a two-point design method was proposed for RCC material parameters

(K_{IC} & f_{t})

with varying strengths and water-to-cement ratios.

查看原文本刊更多论文

量化碾压混凝土断裂性能的改进型概率设计方法

本文采用边界元法（BEM）评估了与辊压混凝土（RCC）断裂性能有关的材料参数。虚构裂缝生长长度 Δafic 由相对尺寸 (T-a0)/di 确定，同时得到了不同水灰比下 RCC 材料参数 (KIC&ft) 的个性化值。本研究首次提出了三参数 Weibull 断裂统计模型来分析这些 RCC 材料参数（KIC&ft）个性化值的离散性。统计分析得到了每组材料参数（KIC&ft）的最小值。根据三参数 Weibull 断裂统计模型预测了各组 RCC 的破坏曲线，并验证了材料参数 (KIC&ft) 的简单计算模型。此外，还针对不同强度和水灰比的 RCC 材料参数（KIC&ft）提出了两点设计方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Theoretical and Applied Fracture Mechanics 工程技术-工程：机械

CiteScore

8.40

自引率

18.90%

发文量

435

审稿时长

37 days

期刊介绍： Theoretical and Applied Fracture Mechanics'' aims & scopes have been re-designed to cover both the theoretical, applied, and numerical aspects associated with those cracking related phenomena taking place, at a micro-, meso-, and macroscopic level, in materials/components/structures of any kind. The journal aims to cover the cracking/mechanical behaviour of materials/components/structures in those situations involving both time-independent and time-dependent system of external forces/moments (such as, for instance, quasi-static, impulsive, impact, blasting, creep, contact, and fatigue loading). Since, under the above circumstances, the mechanical behaviour of cracked materials/components/structures is also affected by the environmental conditions, the journal would consider also those theoretical/experimental research works investigating the effect of external variables such as, for instance, the effect of corrosive environments as well as of high/low-temperature.