Archives of Civil Engineering最新文献_第5页

Deformation failure analysis and identification method of zoning type of actual tunnel surrounding rock 实际隧道围岩分区类型的变形破坏分析与识别方法

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147676

Wei Jing, Yunlong Gao, Rencai Jin, Laiwang Jing

{"title":"Deformation failure analysis and identification method of zoning type of actual tunnel surrounding rock","authors":"Wei Jing, Yunlong Gao, Rencai Jin, Laiwang Jing","doi":"10.24425/ace.2023.147676","DOIUrl":"https://doi.org/10.24425/ace.2023.147676","url":null,"abstract":": The research on deformation zoning mechanism of tunnel surrounding rock is of great signiﬁcance for ensuring safe production and disaster prevention in coal mines. However, the traditional deformation zoning theory of tunnel surrounding rock uses the ideal strain softening model as the criterion for judging the zoning type of all tunnel surrounding rock, ignoring the diﬀerence between the deformation zoning type of a speciﬁc actual tunnel and the basic zoning type of surrounding rock. In order to study the method for determining the actual deformation zoning type of tunnel surrounding rock, the formation mechanism of the actual deformation zoning of tunnel surrounding rock has been revealed.Combinedwithengineeringexamples,amethodfordeterminingtheactualdeformationzoning type and boundary stress of speciﬁc tunnel surrounding rock has been proposed. The results show that the boundary stress and position of the actual deformation zone are determined by the peak strength ﬁtting line, residual strength ﬁtting line, support strength line, and the position of the circumferential and radial stress relationship lines of each deformation zone. The actual boundary stress of each zone of tunnel surrounding rock is ultimately only related to the basic mechanical properties of the tunnel surrounding rock and the in-situ stress ﬁeld. The research results can provide reference for disaster management of underground engineering","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138951143","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

Cracking risk of high-performance cement composites due to restrained autogenous shrinkage with and without soaked lightweight aggregate 有无浸泡轻质骨料的高性能水泥复合材料因受约束自生收缩而产生的开裂风险

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147679

Adam Zieliński, Anton K. Schindler, M. Kaszyńska

{"title":"Cracking risk of high-performance cement composites due to restrained autogenous shrinkage with and without soaked lightweight aggregate","authors":"Adam Zieliński, Anton K. Schindler, M. Kaszyńska","doi":"10.24425/ace.2023.147679","DOIUrl":"https://doi.org/10.24425/ace.2023.147679","url":null,"abstract":": Due to the large amount of binder and low water-cement ratio, high-performance cement composites have high compressive strength and a dense hardened cement paste microstructure. External curing is insuﬃcient, as it cannot reach the interior parts of the structure, which allows autogenous shrinkage to occur in the inside. Lack of prevention of autogenous shrinkage and high restraint causes structural microcracks around rigid components (aggregate, rebars). Consequently, this phenomenon leads to the propagation of internal microcracks to the surface and reduced concrete durability. One way to minimize autogenous shrinkage is internal curing. The use of soaked lightweight aggregate to minimize the risk of cracking is not always suﬃcient. Sorption and desorption kinetics of ﬁne and coarse ﬂy ash aggregate were tested and evaluated. The correlation between the development of linear autogenous shrinkage and the tensile stresses in the restrained ring test is assessed in this paper. A series oflinearspecimens,withcross-sectionandlengthcustomdesignedtomatchthegeometryoftheconcrete ring, were tested and analyzed. Determination of the maximum tensile stresses caused by the restrained autogenous shrinkage in the restrained ring test, together with the approximation of the tensile strength development of the cement composites were used to evaluate the cracking risk development versus time. The high-performance concretes and mortars produced with mineral aggregates and lightweight aggregates soaked with water were tested. The use of soaked granulated ﬂy ash coarse lightweight aggregate in cementitious composites minimized both the autogenous shrinkage and cracking risk.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138951868","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 on cost prediction for construction project based on Boruta-SO-BP model 基于 Boruta-SO-BP 模型的建筑项目成本预测研究

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147667

Hao Cui, Junjie Xia

引用次数: 0

Slope stability analysis of post-mining dumps with the use of photogrammetric geometry measurements – a case study 利用摄影测量几何尺寸分析采矿后堆场的边坡稳定性--案例研究

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147654

Magdalena Wróblewska, Magdalena Kowalska, Marian Łupieżowiec

{"title":"Slope stability analysis of post-mining dumps with the use of photogrammetric geometry measurements – a case study","authors":"Magdalena Wróblewska, Magdalena Kowalska, Marian Łupieżowiec","doi":"10.24425/ace.2023.147654","DOIUrl":"https://doi.org/10.24425/ace.2023.147654","url":null,"abstract":": Post-mining dumps are a common sight in the industrial areas of Silesia (Poland). Despite several reclamation projects, many of them still constitute an unresolved problem. It is not only a matter of unaesthetic view – they often pose a threat to the environment and the people living nearby. Despite revitalization, some dumps are not properly maintained and are at the risk of slope failure. Such places require constant geodetic observation and stability control. In this article, the example of a dump located in the city of Gliwice was used to show the possibilities oﬀered by the use of photogrammetry and unmanned aerial vehicles (UAV) for cyclic checks of the embankment condition. The current state of the dumpandtheresultsofinterventionsaftertwoincidentsofslopefailure,wereobserved.Themainslopes of the terrain surface and at the selected cross-sections were determined in two ﬂight missions. The obtained geometrical data were used in the further numerical analysis. Finite Element Method model representingoneoftheescarpmentcross-sectionswasbuilttoestimatethefactorofsafetyanddetermine","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138953578","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

Project cost and time key factors distressing building construction projects of Sindh Pakistan: a post-pandemic approach 困扰巴基斯坦信德省建筑施工项目的项目成本和时间关键因素：大流行病后的方法

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147678

Haseeb Haleem, N. Y. Zainun, S. Khahro

{"title":"Project cost and time key factors distressing building construction projects of Sindh Pakistan: a post-pandemic approach","authors":"Haseeb Haleem, N. Y. Zainun, S. Khahro","doi":"10.24425/ace.2023.147678","DOIUrl":"https://doi.org/10.24425/ace.2023.147678","url":null,"abstract":": The construction industry plays a major role in the boost of the country’s economy, providing basic facilities for residential and creating thousands of job opportunities. During COVID-19, the construction sectors in Sindh Pakistan was highly suﬀered and leading to delays in the completion of projects. As the construction sector was globally aﬀected, building construction projects were also aﬀected by completing the projects on estimated time and cost. Thus, this research investigates the signiﬁcant factors of time and cost that aﬀected the Hyderabad building construction projects during COVID-19 situation. Questionnaire surveys were designed to collect data from the employees working on building projects in Sindh Pakistan. The collected data was analyzed through the Average Index method. Unsafe working environment; shortage of workers; and increasing project cost was observed as signiﬁcant factors that were highly aﬀected during COVID-19. The results and ﬁndings shall be supportive for stakeholders to take into consideration of factors in the early stage of the expected pandemic situation. This research suggested that the stakeholders shall modify or amend the contract clause regarding for pandemic situation and incorporate the identiﬁed factors in the contract that should be considered by stakeholders to save the time and cost of the projects.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138948551","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

Study on the dynamic development law of fissure in expansive soil under different soil thickness 不同土层厚度下膨胀土裂隙动态发展规律研究

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147674

引用次数: 0

Seismic performance evaluation of a base-isolated steel liquid storage tank with limiting-devices considering soil-structure interaction 考虑土-结构相互作用的带限位装置的基底隔震钢制液体储罐的抗震性能评估

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147681

Wei Jing, Shuang Tian

{"title":"Seismic performance evaluation of a base-isolated steel liquid storage tank with limiting-devices considering soil-structure interaction","authors":"Wei Jing, Shuang Tian","doi":"10.24425/ace.2023.147681","DOIUrl":"https://doi.org/10.24425/ace.2023.147681","url":null,"abstract":": Liquid storage tank is widely used in the petrochemical industry, earthquake will lead to structural damage and secondary disasters, and damping control opens up a new way for seismic design of liquid storage tank. Considering soil-structure-ﬂuid interaction, liquid sloshing dynamic behavior and material nonlinearity, a three-dimensional calculation model of shock absorption liquid storage tank is established by combining sliding isolation and displacement-limiting devices. The dynamic responses of the liquid storage tanks under the action of Kobe and El-Centro waves are investigated, and the inﬂuence of soil-structure interaction (SSI) on the dynamic response is discussed. The results show that the damping ratio is basically between 30% and 90%. After the SSI is considered, the damping ratio of liquid sloshing wave height is increased, while the damping ratio of the dynamic response of the liquid storage tank is decreased, and the change of elastic modulus has little eﬀect on the damping eﬀect. The sliding isolation with displacement-limiting devices has signiﬁcant damping control eﬀects on the liquid sloshing wave height and the dynamic responses of the liquid storage tank.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138951904","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

Proposal of concept for global analysis of hybrid beams – numerical investigation 混合梁全局分析概念提案 - 数值研究

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147656

Maciej Kożuch, Łukasz Skrętkowicz

{"title":"Proposal of concept for global analysis of hybrid beams – numerical investigation","authors":"Maciej Kożuch, Łukasz Skrętkowicz","doi":"10.24425/ace.2023.147656","DOIUrl":"https://doi.org/10.24425/ace.2023.147656","url":null,"abstract":": Investigation on the behaviour of hybrid beams is presented. Hybrid beam stands for an element with hybrid cross sections. This means sections that consist of steel and concrete parts, connected together with composite dowels, and both are considered for shear ﬂow analysis. In practice, a more general solution may be used for bridges in the form of a beam in which the span sections are hybrid and the support sections are concrete. For the ﬁrst time in the world, it was decided to introduce a girder in bridge construction, in which a concrete web with a thickness of only 20 cm was formed, directly connected to the steel web, so that a hybrid cross-section is created in accordance with the new European design regulations currently being developed (1994-1-102). The solution is new itself and requires also a new approach for internal forces determination. In this paper a parametric analysis of diﬀerent hybrid beams with span range from 20 to 40 m and with diﬀerent reinforcment ratio is performed to get knowledge on the inﬂuence of (1) concrete cracking and (2) rheology of concrete on the redistribution of internal forces. Results are analysed and conclusions are presented. As a ﬁnal step, a general method for computer aided modelling of hybrid beams ( hybrid beam concept ) is proposed, which is based on the uncracked analysis. Such an analysis is designer-friendly and while appropriate benchmarked (as in this paper) can spare a lot of time needed for detailed iterative cracked analysis.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138952552","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

Selection of technological and organizational solutions for construction works with the use of a fuzzy relation of preferences 利用模糊偏好关系选择建筑工程的技术和组织解决方案

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147677

N. Ibadov, S. Farzaliyev, Irene Ladnykh

{"title":"Selection of technological and organizational solutions for construction works with the use of a fuzzy relation of preferences","authors":"N. Ibadov, S. Farzaliyev, Irene Ladnykh","doi":"10.24425/ace.2023.147677","DOIUrl":"https://doi.org/10.24425/ace.2023.147677","url":null,"abstract":": The main idea of this article is the necessity to take into account the multi-variant technological and organizational solutions of individual construction works in order to ensure rational planning for the implementation of construction projects. In practice, selection of construction works most often limited to the evaluation of technological and organizational solutions on the basis of time and cost criteria. However, it should be remembered that construction projects usually have a complex technological and organizational structure. This fact may increase the durations and costs of individual works in relation to their planned durations and costs. Therefore, the authors propose to take into account the criterion of technological and organizational complexity of the assessed construction work. The article describes the procedure for the technological and organizational optimization of construction works. A numerical example of the method of selecting technological and organizational solutions with the use of a fuzzy relation of preferences is also presented. The article also proposes to combine the computational selection model with the network planning model in a graphic form. This approach expands the computational and decision-making possibilities of network models in the practice of planning construction projects.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138952302","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 by design: architectural and structural solutions allowing the integration of the skyscraper complex with the urban space in Warsaw 设计研究：使摩天大楼群与华沙城市空间融为一体的建筑和结构解决方案

IF 0.7

Archives of Civil Engineering Pub Date : 2023-12-21 DOI: 10.24425/ace.2023.147645

Marcin Goncikowski

{"title":"Research by design: architectural and structural solutions allowing the integration of the skyscraper complex with the urban space in Warsaw","authors":"Marcin Goncikowski","doi":"10.24425/ace.2023.147645","DOIUrl":"https://doi.org/10.24425/ace.2023.147645","url":null,"abstract":": The text is devoted to the description of the methodology and research by design conducted to determinethefunctionalandspatialsolutionsofahigh-risebuildingcomplexlocatedinWarsawfavoring connections with the public space of the city. The research work was carried out in the following phases: pre-design, including analyses and studies, context analysis, data collection, and design phase including deﬁning initial conceptual variants, developed conceptual variants, selection, and determination of the ﬁnal variant of the concept of functional and spatial structure for further investment and design steps. The ﬁnal solutions adopted in the described process in the realization of the complex and detailed execution designs were also indicated. Design research was done through iteration of solutions, critical analysis, and functional optimization. The ﬁnal solution was the division of the stylobate part of the complex, following the pedestrian traﬃc analysis, into three investment parts and the introduction of a rich program of supplementary functions for the dominant oﬃce function. A complex program of supplementary functions: trade, entertainment and event space, medical functions, gastronomic parts.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138951535","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