Archives of Civil Engineering最新文献_第10页

Experimental study on shear mechanical properties of cement mortar specimen with through-step joints under direct shear 直剪贯通缝水泥砂浆试件抗剪力学性能试验研究

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.143025

{"title":"Experimental study on shear mechanical properties of cement mortar specimen with through-step joints under direct shear","authors":"","doi":"10.24425/ace.2022.143025","DOIUrl":"https://doi.org/10.24425/ace.2022.143025","url":null,"abstract":": In this study, direct shear tests were carried out on cement mortar specimens with single-ladder, single-rectangular, and double-rectangular step joints. Consequently, the shear strength, and crack shape of specimens with these through-step joints were analyzed, for understanding the inﬂuence ofthethrough-stepjoint’sshapeonthedirectshearmechanicalproperties.Theresultsoftheinvestigation areasfollows:(1)Underthesamenormalstress,anyincreasesintheheight ℎ of the step joint causes an initial-increase-decrease in the shear strengths of specimens with single-ladder and double-rectangular step joints, causing a type-W variation pattern for the specimens with single-rectangular step joint. More essentially, when normal stress and ℎ are constant, the shear strength of specimens with a single-ladder step joint is the greatest, followed by specimens with a double-rectangular step joint, and then specimens with a single-rectangular step joint is the least. (2) Furthermore, given a small ℎ and low normal stress, specimen with a single-ladder step joint mainly experiences shear failure, whereas specimens with single-rectangular and double-rectangular step joints mainly generate extrusion milling in the step joints.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135637400","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

Integrated analysis of costs and amount of greenhouse gases emissions during the building lifecycle 综合分析建筑生命周期内的成本和温室气体排放量

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.137176

Krzysztof Zima

{"title":"Integrated analysis of costs and amount of greenhouse gases emissions during the building lifecycle","authors":"Krzysztof Zima","doi":"10.24425/ace.2021.137176","DOIUrl":"https://doi.org/10.24425/ace.2021.137176","url":null,"abstract":"More than 6 billion square metres of new buildings are built each year. This is about 1.2 million buildings. If we translate these figures into carbon footprint (CF) generated during the construction, it will be approximately 3.7 billion tons of carbon dioxide. The contractors all over the world – also in Poland – decide to calculate the carbon footprint for various reasons, but mostly they are compelled to do so by the market. The analysis of costs and emissions of greenhouse gases for individual phases of the construction system allows implementing solutions and preventing a negative impact on the environment without increasing the construction costs. The share of each phase in the amount of produced carbon for construction and use of the building depends mainly on the used materials and applied design solutions. Hence, the materials and solutions with lesser carbon footprint should be used. It can be achieved by using natural materials or materials which do not need much energy to be produced. The author will attempt to outline this idea and present examples of integrated analysis of costs and amount of carbon footprint during the building lifecycle.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135544602","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: 3

Formulae for Buckling Load Bearing Capacity of Glass Structure Elements 玻璃结构构件屈曲承载力计算公式

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2020.131814

M. Gwóźdź

{"title":"Formulae for Buckling Load Bearing Capacity of Glass Structure Elements","authors":"M. Gwóźdź","doi":"10.24425/ace.2020.131814","DOIUrl":"https://doi.org/10.24425/ace.2020.131814","url":null,"abstract":"Development of contemporary building industry and related search for new aesthetical and functional solutions of monumental buildings in the centers of large cities resulted in the interest in glass as a structural material. Attractiveness of glass as a building material may be derived from the fact, that it combines transparency and aesthetical look with other functional features. Application of glass results in modern look of building facades, improves the indoor comfort without limiting the availability of natural daylight. Wide implementation of the new high performance float flat glass manufacturing technology, in conjunction with increasing expectations of the construction industry relating to new glass functions, has led to significant developments in glass structures theory, cf. [1, 3, 4, 5, 9, 10]. Many years of scientific research conducted in European Union countries have been crowned with a report CEN/TC 250 N 1050 [2], compiled as a part of the work of European Committee for Standardization on the second edition of Eurocodes an extension of the first edition by, among others, the recommendations for the above mentioned design of glass structures, in particular modern procedures for the design of glass building structures. The procedures proposed in the pre-code [2] are not widely known in Poland, and their implementation in the design codes should be verified at the country level. This task is undertaken in this paper.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135544929","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: 1

The Impact of a Geogrid System on Load-Bearing Capacity of Natural Airfield Pavements 土工格栅系统对天然机场路面承载能力的影响

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2020.131795

M. Wesołowski, A. Kowalewska

引用次数: 3

Buckling Resistance of Quasi-Straight H-Section Beam-Columns under Unequal End Moments 等端弯矩作用下准直h型钢梁柱的抗屈曲性能

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.136476

Marian Antoni Giżejowski, Radosław Bronisław Szczerba, Zbigniew Stachura, Marcin Daniel Gajewski

{"title":"Buckling Resistance of Quasi-Straight H-Section Beam-Columns under Unequal End Moments","authors":"Marian Antoni Giżejowski, Radosław Bronisław Szczerba, Zbigniew Stachura, Marcin Daniel Gajewski","doi":"10.24425/ace.2021.136476","DOIUrl":"https://doi.org/10.24425/ace.2021.136476","url":null,"abstract":"Steel prismatic elements of equal flanges double-tee section subject to major axis bending and compression, unrestrained in the out-of-plane direction between the supports, are vulnerable to buckling modes associated with minor axis flexural and torsional deformations. When end bending moments are acting alone on the quasi-straight member, the sensitivity to lateral-torsional buckling (LTB) is very much dependent upon the ratio of section minor axis to major axis moments of inertia, and additionally visibly dependent upon the major axis moment gradient ratio. In the case of major axis bending with the presence of a compressive axial force, even of rather small value in relation to the section squash resistance, there is a drastic reduction of structural elements in their realistic lengths to maintain a tendency to fail in the out-of-plane mode, governed by the large twist rotation. Increasing the load effects ratio of dimensionless axial force to dimensionless maximum major axis bending moment, the buckling mode goes away from that of lateral-torsional one, starting to become that closer to the minor axis flexural buckling (FBZ) mode. Different aspects of the flexural-torsional buckling (FTB) resistance of the typical rolled H-section beam-column with regard to the General Method (GM) formulation, developed by the authors elsewhere and based on the parametric finite element analysis, are dealt with in this paper. Investigations are concerned with different member slender ratio, different moment gradient ratios and different load effects ratio. Final conclusions are related to practical applications of the proposed format of General Method in relation to the effect of large displacements on the FTB resistance reduction factor described through the dimensionless measure of action effects and the FTB relative slenderness ratio of quasi-straight beam-columns.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584380","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: 1

Properties of stone mastic asphalt incorporating nano titanium as binder's modifier 纳米钛作为粘结剂改性石胶泥沥青的性能研究

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140192

Nur Syafiqah Shamimi Mohd Zali, Khairil Azman Masri, Ramadhansyah Putra Jaya, Mohd Mustafa Al Bakri Abdullah, Muzamir Hasan, Mohd Rosli Mohd Hasan, Bartłomiej Jeż, Marcin Nabiałek, Marek Sroka, Paweł Pietrusiewicz

{"title":"Properties of stone mastic asphalt incorporating nano titanium as binder's modifier","authors":"Nur Syafiqah Shamimi Mohd Zali, Khairil Azman Masri, Ramadhansyah Putra Jaya, Mohd Mustafa Al Bakri Abdullah, Muzamir Hasan, Mohd Rosli Mohd Hasan, Bartłomiej Jeż, Marcin Nabiałek, Marek Sroka, Paweł Pietrusiewicz","doi":"10.24425/ace.2022.140192","DOIUrl":"https://doi.org/10.24425/ace.2022.140192","url":null,"abstract":": Stonemasticasphaltisagap-gradedmixandisusuallyrelatedtoitshighbitumencontentand its skeleton-like constitution. Although famous for its durability, high resistance to fatigue and rutting, issues such as bleeding and premature aging do occur in the mix since it has a high bitumen content and voids due to its gap-graded structure. In order to encounter these problems from aﬀecting the mix, some instances such as adding additives, rejuvenators and Nowadays, nano materials are being used in the asphalt mixtures and nano titanium is being introduced as a modiﬁer to the asphalt binder in order to improve the mechanical properties of the stone mastic asphalt mix. The related tests done in order to access the improvement are resilient modulus, dynamic creep, moisture susceptibility and binder drain down. The content of nano titanium used in this research are 1%, 2%, 3%, 4% and 5%. This study is done to assess the mechanical performance of stone mastic asphalt with nano titanium modiﬁed binder.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584612","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

Experimental study on dynamic stability of rubber-cement composites by SHPB and high-speed slicing 橡胶-水泥复合材料SHPB和高速切片动态稳定性试验研究

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140170

Rongzhou Yang, Ying Xu, Pei Yuan Chen

{"title":"Experimental study on dynamic stability of rubber-cement composites by SHPB and high-speed slicing","authors":"Rongzhou Yang, Ying Xu, Pei Yuan Chen","doi":"10.24425/ace.2022.140170","DOIUrl":"https://doi.org/10.24425/ace.2022.140170","url":null,"abstract":": Improper disposal of waste tires will not only bring environmental impact and safety risks but also cause a serious waste of resources. In the ﬁeld of civil engineering materials, waste tire particles are used as a substitute for non-renewable aggregates to produce ﬂexible rubber-cement composites (RCC). To explore the high-speed slicing stability of RCC, this test took normal cement mortar (NCM) and rubber cement mortar (RCM) as research objects. The SHPB tests with the same impact energy level and the high-speed slicing tests with a slice thickness range of about 1.4 mm ∼ 4 . 4 mm were carried out. The results showed that NCM and RCM showed diﬀerent stability diﬀerences in the process of high-speed slicing. In the case of ensuring the integrity of the slice, the minimum thickness of the slice can be better decreased with the increase of the rubber content. Finally, from the perspectives of split Hopkinson pressure bar (SHPB) test results and mesoscopic structure states, the essential reason for ensuring the stability of high-speed slicing lied in the improvement of rubber particles (dominant role) and pores on material deformation and ﬂexible energy dissipation.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584662","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: 2

Dynamic monitoring as a part of structural health monitoring of dams 动力监测是大坝结构健康监测的一部分

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2022.140186

Mateja Klun, Andrej Kryžanowski

{"title":"Dynamic monitoring as a part of structural health monitoring of dams","authors":"Mateja Klun, Andrej Kryžanowski","doi":"10.24425/ace.2022.140186","DOIUrl":"https://doi.org/10.24425/ace.2022.140186","url":null,"abstract":": Safety of dams and other hydraulic structures is a complex procedure that must consider the individual characteristics of each structure and provide an insight in the structural health at every stage of the structure’s life cycle. Failures of structures permanently or temporarily retaining water may cause large economic damage, environmental disasters, and loss of lives. An engineering design should, therefore, guarantee maximum security of such structures or maximize their reliability not only in ordinary operating conditions but also under extreme hydrological load. By performing structural heath monitoring (SHM), the safety can be optimized, including the performance and life expectancy of a structure by adopting an appropriate methodology to observe the identiﬁed failure modes for a selected dam type. To adopt SHM to hydraulic structures it is important to broaden the knowledge and understanding of the ageing processes on hydraulic structures, which can be achieved by laboratory testing and application and development of novel monitoring techniques, e.g., vibration monitoring. In Slovenia, we are increasingly faced with the problem of ageing of dam structures. At the same time, we are also faced with changes in the environment, especially with the variability in time-dependent loads and with new patterns of operation on dams used for hydropower, with several starts and stops of turbines happening on a daily basis. These changes can lead to a decrease in structural and operational safety of dams. In this paper we propose a methodology where the dynamic response of concrete dams is continuously monitored in few locations on the dam using accelerometers, while all signiﬁcant structural members are measured in discrete time intervals using portable vibrometers. We focused on run-of-the-river dams, which are a common dam type in Slovenia. The pilot case for the system is lower Sava River with a cascade of 5 dams used for hydropower.","PeriodicalId":45753,"journal":{"name":"Archives of Civil Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584669","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: 2

Effect of filler type on non-linear viscoelastic characteristics of asphalt mastic 填料类型对沥青胶泥非线性粘弹性特性的影响

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2021.137166

Grzegorz Mazurek

引用次数: 1

Rules for Using the Point Rating Scales in Inspections of Road Bridges 公路桥梁检验中点级评定标准的使用规则

Archives of Civil Engineering Pub Date : 2023-11-06 DOI: 10.24425/ace.2020.131813

L. Janas, A. Kaszyński, E. Michalak

引用次数: 0