Meng Mu, Fei Liu, Ji Li, Feng He, Sanfeng Liu, Chun Li, Yang Yang
{"title":"Influence of modified polyurea coating thickness on the blast resistance of RC slab","authors":"Meng Mu, Fei Liu, Ji Li, Feng He, Sanfeng Liu, Chun Li, Yang Yang","doi":"10.1016/j.istruc.2024.107009","DOIUrl":null,"url":null,"abstract":"To study the influence of modified polyurea coating thickness on the blast resistance performance of reinforced concrete (RC) slab, a field test was conducted with seven shots. The test recorded the dynamic response data of modified polyurea coated reinforced concrete (PRC) slab under contact explosion load, including the area and displacement of the coating deformation as well as acceleration. In addition, in order to further explore the influence law of different TNT charge quantities on coating deformation, numerical simulation research was carried out by using LS-DYNA. The test results show that, under the same explosion conditions, as the coating thickness increases, the peak displacement and residual displacement of the coating decrease, while the area of coating deformation first increases and then decreases. Increasing the thickness of the coating can also effectively reduce the speed at which peak displacement occurs, but increasing the rebound displacement may cause a secondary impact on the RC slab. By adding additional test conditions, the optimal coating thickness subjected different explosive loads can be determined, leading to the development of economical and highly resistant protective structures.","PeriodicalId":48642,"journal":{"name":"Structures","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structures","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.istruc.2024.107009","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
To study the influence of modified polyurea coating thickness on the blast resistance performance of reinforced concrete (RC) slab, a field test was conducted with seven shots. The test recorded the dynamic response data of modified polyurea coated reinforced concrete (PRC) slab under contact explosion load, including the area and displacement of the coating deformation as well as acceleration. In addition, in order to further explore the influence law of different TNT charge quantities on coating deformation, numerical simulation research was carried out by using LS-DYNA. The test results show that, under the same explosion conditions, as the coating thickness increases, the peak displacement and residual displacement of the coating decrease, while the area of coating deformation first increases and then decreases. Increasing the thickness of the coating can also effectively reduce the speed at which peak displacement occurs, but increasing the rebound displacement may cause a secondary impact on the RC slab. By adding additional test conditions, the optimal coating thickness subjected different explosive loads can be determined, leading to the development of economical and highly resistant protective structures.
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.