Prediction of shear properties in cross laminated timber–concrete composites with notch connections

IF 3.9 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-04-22 DOI:10.1016/j.istruc.2025.108949

Gi Young Jeong , Van Sy Pham , Dangkhai Tran

{"title":"Prediction of shear properties in cross laminated timber–concrete composites with notch connections","authors":"Gi Young Jeong , Van Sy Pham , Dangkhai Tran","doi":"10.1016/j.istruc.2025.108949","DOIUrl":null,"url":null,"abstract":"<div><div>This study develops an equation to predict the shear capacity of cross-laminated timber (CLT)–concrete composites (CCC) with notch connections. The equation accounts for key variables, including wood species, notch depth, and load-to-grain direction. To assess the impact of these factors, push-out tests were conducted to evaluate the slip modulus and shear capacity of CCC. The results showed that the larch CLT notch connector exhibited a 14.70 % higher slip modulus and a 21.78 % higher shear capacity than the pine CLT. While the slip modulus remained relatively unchanged with increasing notch depth, the shear capacity increased by 9.39 %, 37.97 %, and 67.20 % for notch depths of 30, 40, and 50 mm, respectively, compared to the 20-mm notch depth. Additionally, CLTs with notch depths of 20 and 40 mm demonstrated higher slip moduli and shear capacities when loaded in the 0° load-to-grain direction compared to the 90°direction. A new prediction equation for shear properties in CCC with notch connections is proposed, incorporating the effects of wood density, notch depth, and CLT panel thickness. The difference between experimental and predicted values for slip modulus and shear capacity ranged from 0.04 % to 12.00 % and 2.25–20.00 %, respectively.</div></div>","PeriodicalId":48642,"journal":{"name":"Structures","volume":"76 ","pages":"Article 108949"},"PeriodicalIF":3.9000,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352012425007635","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

This study develops an equation to predict the shear capacity of cross-laminated timber (CLT)–concrete composites (CCC) with notch connections. The equation accounts for key variables, including wood species, notch depth, and load-to-grain direction. To assess the impact of these factors, push-out tests were conducted to evaluate the slip modulus and shear capacity of CCC. The results showed that the larch CLT notch connector exhibited a 14.70 % higher slip modulus and a 21.78 % higher shear capacity than the pine CLT. While the slip modulus remained relatively unchanged with increasing notch depth, the shear capacity increased by 9.39 %, 37.97 %, and 67.20 % for notch depths of 30, 40, and 50 mm, respectively, compared to the 20-mm notch depth. Additionally, CLTs with notch depths of 20 and 40 mm demonstrated higher slip moduli and shear capacities when loaded in the 0° load-to-grain direction compared to the 90°direction. A new prediction equation for shear properties in CCC with notch connections is proposed, incorporating the effects of wood density, notch depth, and CLT panel thickness. The difference between experimental and predicted values for slip modulus and shear capacity ranged from 0.04 % to 12.00 % and 2.25–20.00 %, respectively.

查看原文本刊更多论文

缺口连接木-混凝土交叉层合复合材料抗剪性能预测

本文建立了具有缺口连接的交叉层合木-混凝土复合材料抗剪承载力预测方程。该方程考虑了关键变量，包括木材种类、缺口深度和载荷-颗粒方向。为了评估这些因素的影响，进行了推出试验，评估了CCC的滑动模量和剪切能力。结果表明：落叶松CLT缺口接头的滑移模量比松木CLT高14.70 %，剪切能力比松木CLT高21.78 %；随着切口深度的增加，滑动模量基本保持不变，而当切口深度为30、40和50 mm时，剪切能力分别比切口深度为20 mm时提高了9.39 %、37.97 %和67.20 %。此外，缺口深度为20和40 mm的CLTs在0°加载方向上的滑移模量和剪切能力高于90°加载方向。考虑木材密度、缺口深度和CLT板厚的影响，提出了一个新的含缺口连接的CCC抗剪性能预测方程。滑移模量和剪切能力的实验值与预测值的差值分别为0.04 % ~ 12.00 %和2.25 ~ 20.00 %。

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

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.