Bulletin of Science and Research Center “Stroitelstvo”最新文献_第3页

CHANGES IN THE CODE OF RULES FOR THE DESIGN OF STRUCTURES MADE OF CONCRETE WITH POLYMER COMPOSITE REINFORCEMENT 聚合物复合配筋混凝土结构设计规范的变更

Bulletin of Science and Research Center “Stroitelstvo” Pub Date : 2021-08-30 DOI: 10.37538/2224-9494-2021-3(30)-51-55

Takhir Mukhamediyev

引用次数: 0

ON THE ISSUE OF ESTIMATING THE EFFECTIVE LENGTH OF NON-CENTRALLY COMPRESSED REINFORCED CONCRETE ELEMENTS 非中心受压钢筋混凝土构件有效长度的估算问题

Bulletin of Science and Research Center “Stroitelstvo” Pub Date : 2021-08-30 DOI: 10.37538/2224-9494-2021-3(30)-17-29

S. Zenin, Ravil Sharipov, O. Kudinov

{"title":"ON THE ISSUE OF ESTIMATING THE EFFECTIVE \u0000LENGTH OF NON-CENTRALLY COMPRESSED \u0000REINFORCED CONCRETE ELEMENTS","authors":"S. Zenin, Ravil Sharipov, O. Kudinov","doi":"10.37538/2224-9494-2021-3(30)-17-29","DOIUrl":"https://doi.org/10.37538/2224-9494-2021-3(30)-17-29","url":null,"abstract":"Research work was carried out at NIIZHB \u0000named after A.A. Gvozdev, one of the tasks of \u0000which was to study the influence of the conditions \u0000for stiff fixing supports on the parameters \u0000of the effective lengths of reinforced \u0000concrete columns with square and rectangular \u0000cross-sections assigned when calculating the \u0000strength of normal sections. As part of the \u0000study, the influence of different values and \u0000directions of the angles of rotation of the fixing \u0000and their displacements was evaluated. \u0000The conducted computational and theoretical \u0000studies based on the analysis of experimental \u0000data showed that the method of determining \u0000the effective lengths, adopted in domestic \u0000standards, can be improved. \u0000Based on the results of the research, proposals \u0000were formulated to take the results of \u0000the work into account in the current regulatory \u0000framework. Taking into account the peculiarities \u0000of the conditions for fixing the structures \u0000considered in the work, which correspond to \u0000the nature of the work of monolithic columns \u0000and pylons, it is recommended to include the \u0000provisions of the proposed methodology in SP \u0000430.1325800.2018, which applies to monolithic \u0000structural systems of buildings. The prepared \u0000proposals for the calculation are supposed to \u0000be included in the current regulatory documents \u0000as one of the possible options for determining \u0000the effective length of non-centrally \u0000compressed elements when calculating their \u0000strength.","PeriodicalId":332973,"journal":{"name":"Bulletin of Science and Research Center “Stroitelstvo”","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122059958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

RESEARCH OF THE DEPENDENCE OF THE GRAIN SIZE COMPOSITION AND GRADE OF CRUSHABILITY OF RECYCLED CRUSHED STONE ON THE STRENGTH OF THE ORIGINAL RECYCLED CONCRETE 再生碎石的粒度组成和破碎等级对原再生混凝土强度的依赖性研究

Bulletin of Science and Research Center “Stroitelstvo” Pub Date : 2021-07-30 DOI: 10.37538/2224-9494-2021-3(30)-5-16

Z. Beppaev, L. Astvatsaturova, Sergey Kolodyazhniy, Sergey Vernigora, Vladislav Lopatinskiy

{"title":"RESEARCH OF THE DEPENDENCE OF THE GRAIN SIZE COMPOSITION AND GRADE OF CRUSHABILITY OF RECYCLED CRUSHED STONE ON THE STRENGTH OF THE ORIGINAL RECYCLED CONCRETE","authors":"Z. Beppaev, L. Astvatsaturova, Sergey Kolodyazhniy, Sergey Vernigora, Vladislav Lopatinskiy","doi":"10.37538/2224-9494-2021-3(30)-5-16","DOIUrl":"https://doi.org/10.37538/2224-9494-2021-3(30)-5-16","url":null,"abstract":"The results of the study of the grain-size composition and the grade of crushability of recycled crushed stone and their dependence on the strength of the original recycled concrete are presented. It is found that recycled crushed stone obtained from the original concrete of classes B10 - B30 does not meet the requirements of GOST 8267-93 for total residues on Ø25, Ø20, Ø5 and Ø2.5 sieves. Regardless of the strength of the original concrete, the main fraction of recycled crushed stone is grains with sizes from 12.5 to 20 mm. The strength (grade in terms of crushability) of the recycled crushed stone increases with an increase in the strength of the original concrete. The study of the main parameters of recycled crushed stone at the current moment has been carried out in an insufficient (for widespread introduction into production) volume and requires further study for the subsequent development of independent regulatory and technical documentation (or additions to the current regulatory and technical documents).","PeriodicalId":332973,"journal":{"name":"Bulletin of Science and Research Center “Stroitelstvo”","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125427848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of the method of accounting for pore pressure in the water-resistant layer on the calculation of foundation precipitation 抗水层孔隙压力计算方法对基础降水计算的影响

Bulletin of Science and Research Center “Stroitelstvo” Pub Date : 1900-01-01 DOI: 10.37538/2224-9494-2021-2(29)-112-122

Alexander Тrufanov

引用次数: 0