DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Featuresof the stress-and-strain state of outer walls under the influence of variable temperatures

Vestnik MGSU 10/2013
  • Kremnev Vasiliy Anatol'evich - LLC "InformAviaKoM" Director General, LLC "InformAviaKoM", 2 Pionerskaya str., Korolev, Moscow Region, 141074, Russian Federation; +7 (495) 645-20-62; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kuznetsov Vitaliy Sergeevich - Mytishchi Branch, Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Architectural and Construction Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, Moscow Region, 141006, Russian Federation; +7 (495) 583-07-65; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Talyzova Yuliya Aleksandrovna - Moscow State University of Civil Engineering (MGSU) Assistant, Department of Architectural and Structural Design, Mytishchi Branch, Moscow State University of Civil Engineering (MGSU), 50 Olimpiyskiy prospect, Mytishchi, Moscow Region, 141006, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 52-59

The authors draw attention to possible problems in the process of construction and operation of monolithic frame buildings, construction of which is now widespread. It is known that cracks can often appear in the facade and side walls. The size of the cracks can exceed the allowable limits and repair does not lead to their complete elimination. Also cracks significantly mar the appearance of a building. Thus, the relevance of this study lies not only in fuller understanding of the operation of walls, but also in the ability to prevent undesirable effects.The authors calculated temperature effects for boundary walls of the building blocks made of heavy concrete. The original dimensions of the walls conformed to a grid of columns for the majority of residential and public buildings.The stress-and-strain state of the walls in case of temperature changes is observed in detail, including the transition from sub-zero to above-zero temperatures within the same section (wall). It was revealed that the temperature variations within the established limits may cause stress-and-strain state in the walls, in which the temperature tensile stresses can exceed the tensile strength of materials. The article contains effective means of reducing thermal strains, which can prevent temperature and shrinkage cracking.

DOI: 10.22227/1997-0935.2013.10.52-59

References
  1. Krivoshein A.D., Fedorov S.V. K voprosu o raschete privedennogo soprotivleniya teploperedache ograzhdayushchikh konstruktsiy [On the Problem of Calculating the Reduced Thermal Resistance of Building Envelopes]. Inzhenerno-stroitel'nyy zhurnal [Magazine of Civil Engineering]. 2010, no. 8. Available at: http://www.engstroy.spb.ru Date of access: 5.12.12.
  2. Derkach V.N., Orlovich R.B. Voprosy kachestva i dolgovechnosti oblitsovki sloistykh kamennykh sten [Issues of Quality and Durability of the Lining of Layered Stone Walls]. Inzhenerno-stroitel'nyy zhurnal [Magazine of Civil Engineering]. 2011, no. 2. Available at: http://www.engstroy.spb.ru Date of access: 5.12.12.
  3. Soon-Ching Ng, Kaw-Sai Low, Ngee-Heng Tioh. Newspaper Sandwiched Aerated Lightweight Concrete Wall Panels — Thermal inertia, transient thermal behavior and surface temperature prediction. Energy and Buildings. 2011, vol. 43, no. 7, pp. 1636—1645.
  4. Sami A. Al-Sanea, Zedan M.F. Effect of Thermal Bridges on Transmission Loads and Thermal Resistance of Building Walls under Dynamic Conditions. Applied Energy. 2012, vol. 98, pp. 584—593.
  5. Chengbin Zhang, Yongping Chen, Liangyu Wu, Mingheng Shi. Thermal Response of Brick Wall Filled with Phase Change Materials (PCM) under Fluctuating Outdoor Temperatures. Energy and Buildings. 2011. vol. 43, no. 12, pp. 3514—3520.
  6. Pinsker V.A., Vylegzhanin V.P. Teplofizicheskie ispytaniya fragmenta kladki steny iz gazobetonnykh blokov marki po plotnosti D400 [Thermophysical Test of a Segment of Masonry Walls Made of Aerated Concrete Blocks Mark with the Density D400]. Inzhenernostroitel'nyy zhurnal [Magazine of Civil Engineering]. 2009, no. 8. Available at: http://www.engstroy.spb.ru Date of access: 10.07.13.
  7. Knat'ko M.V., Gorshkov A.S., Rymkevich P.P. Laboratornye i naturnye issledovaniya dolgovechnosti (ekspluatatsionnogo sroka sluzhby) stenovoy konstruktsii iz avtoklavnogo gazobetona s oblitsovochnym sloem iz silikatnogo kirpicha [Laboratory and Field Studies of Durability (Operating Life) of a Wall Structure Made of Autoclave Aerated Concrete with Facing Layer made of Sand-lime Brick]. Inzhenerno-stroitel'nyy zhurnal [Magazine of Civil Engineering]. 2009, no. 8. Available at: http://www.engstroy.spb.ru Date of access: 10.07.13.
  8. Ogorodnik V.M., Ogorodnik Yu.V. Nekotorye problemy obsledovaniya zdaniy s otdelkoy litsevym kirpichom v Sankt-Peterburge [Some Problems of the Inspection of Buildings having Face Brick Finishing in St. Petersburg]. Inzhenerno-stroitel'nyy zhurnal [Magazine of Civil Engineering]. 2010, no. 7. Available at: http://www.engstroy.spb.ru Date of access: 7.02.12.
  9. Snegirev A.I., Al'khimenko A.I. Vliyanie temperatury zamykaniya pri vozvedenii na napryazheniya v nesushchikh konstruktsiyakh [The Influence of Circuit Temperature on the Stresses in the Process of Construction of Load-bearing Structures]. Inzhenerno-stroitel'nyy zhurnal [Magazine of Civil Engineering]. 2008, no. 2. Available at: http://www.engstroy.spb.ru Date of access: 7.02.12.
  10. Karpilovskiy V.S. SCADOFFICE. Vychislitel'nyy kompleks Scad [SCADOFFICE. Computing System Scad]. Moscow, 2011, pp. 274—283.

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Strength of the expandedstretching profile: tests and mathematical modeling

Vestnik MGSU 12/2013
  • Sinelnikov Aleksey Sergeevich - Saint Petersburg State Polytechnical University (SPbGPU) postgraduate student, Department of Unique Buildings and Structures Engineering, Saint Petersburg State Polytechnical University (SPbGPU), 29 Polytechnicheskaya, st., St.Petersburg, 195251, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Orlova Anna Vladimirovna - Saint Petersburg State Polytechnical University (SPbGPU) student, Department of Unique Buildings and Structures Engineering, Saint Petersburg State Polytechnical University (SPbGPU), 29 Polytechnicheskaya, st., St.Petersburg, 195251, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 41-54

This summary report is based on the experimental and numerical research of thin-walled cross-section’s compression resistance carried out in St. Petersburg State Polytechnical University. Current situation on the Russian market concerning the usage of cold-formed thin walled cross-sections is aimed at finding out a base foundation to start up a stipulation of the elements under discussion in the building industry. Some questions about the compression resistance of such cross-sections were raised at different conferences by scientific community and such companies as Arsenal ST, Baltprofile (Russia) and Rautaruukki Oyj (Finland). In this field a number of Doctoral theses have been defended during recent years in Russia (A.R. Tusnin, G.I. Belyy, I.V. Astakhov, D.V. Kuz'menko). Steel galvanized Cand U-profiles and thermo-profiles are the types of thin-walled cross-sections are normally used in small houses construction. Thermo-profiles have slots in webs that decrease the thermal flow through the web, but have negative effect on strength of the profiles. Reticular-stretched thermo-profile is a new type of thin-walled cross-sections that found its place on Russian market. These profiles were an object of the research. The carried out investigations included tests to prove the compression resistance of the thin-walled cross-sections. The compression tests as a result showed the behavior of stud’s profile under critical load. The specimen was compressed under various loads and deformation was recorded. In order to get buckling force a load-deformation diagram was plotted and analyzed. Analytical modeling of thin-walled cross-sections was done with contemporary analysis software (SCAD Office) using finite element method (FEM). During the modeling process the thin-walled profile based on shelland bar-elements were created and buckling analysis task showed good results.

DOI: 10.22227/1997-0935.2013.12.41-54

References
  1. Shatov D.S. Konechnoelementnoe modelirovanie perforirovannykh stoek otkrytogo secheniya iz kholodnognutykh profiley [Finite Element Modelling of Perforated Stays of Open Section Made of Cold-bent sections]. Inzhenerno stroitel'nyy zhurnal [Engineering Construction Journal]. 2011, no. 3, pp. 32—34.
  2. Gordeeva A.O., Vatin N.I. Raschetnaya konechno-elementnaya model' kholodnognutogo perforirovannogo tonkostennogo sterzhnya v programmno-vychislitel'nom komplekse SCADOffice. Inzhenerno stroitel'nyy zhurnal [Calculation Finite Element Model of a Cold-formed Perforated Thin-wall Shank in Programming and Computing Suite SCADOffice]. 2011, no. 3, pp. 36—46.
  3. Zhmarin E.N. Mezhdunarodnaya assotsiatsiya legkogo stal'nogo stroitel'stva [International Assosiation of Light Steel Engineering]. Stroitel'stvo unikal'nykh zdaniy i sooruzheniy [Construction of Unique Buildings and Structures]. 2012, no. 2, pp. 27—30.
  4. Yurchenko V.V. Proektirovanie karkasov zdaniy iz tonkostennykh kholodnognutykh profiley v srede «SCADOffice» [Buildings Framework Modellng Made of Thin-wall Cold-formed Profiles in SCADOffice]. Inzhenerno stroitel'nyy zhurnal [Engineering Construction Journal]. 2010, no. 8, pp. 38—46.
  5. Vatin N.I., Popova E.N. Termoprofil' v legkikh stal'nykh stroitel'nykh konstruktsiyakh [Thermal Profile in Light Steel Building Structures]. Saint Petersburg, SPbGPU Publ., 2006, 63 p.
  6. Kolesov A.I., Lapshin A.A., Valov A.V. Sovremennye metody issledovaniya tonkostennykh stal'nykh konstruktsiy [Modern Methods of Examining Thin-Wall Steel Structures]. Privolzhskiy nauchnyy zhurnal [Volga Scientific Journal]. 2007, no. 1, pp. 28—33.
  7. Kretinin A.N., Krylov I.I. Osobennosti raboty tonkostennoy balki iz gnutykh otsinkovannykh profiley [Operation Features of Thin-wall Beam Made of Roll-Formed Zink-Coated Sections]. Izvestiya vysshikh uchebnykh zavedeniy. Stroitel'stvo [News of Institutions of Higher Education. Engineering]. 2008, no. 6, pp. 1—11.
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  10. Markku Heinisuo. Comparative Study of Multiple Criteria Decision Making Methods for Building Design. Advanced Engineering Informatics. October 2012, vol. 26, no. 4, pp. 716—726.
  11. Tusnin A.R. Chislennyy raschet konstruktsiy iz tonkostennykh sterzhney otkrytogo profilya [Numerical Calculations of the Structures Made of Thin-Wall Shanks of Open Profile]. Moscow, ASV Publ., 2009, 143 p.
  12. Tusnin A.R. Osobennosti chislennogo rascheta konstruktsiy iz tonkostennykh sterzhney otkrytogo profilya [Features of Numerical Calculations of the Structures Made of Thin-Wall Shanks of Open Profile]. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering]. 2010, no. 11, pp. 60—63.
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Compression test of cold-formedsteel perforated profile with steel sheathing

Vestnik MGSU 5/2015
  • Shamanin Aleksandr Yur’evich - Moscow State Academy of Water Transport (MSAWT) Senior Lecturer, postgraduate student, Department of Shipbuilding and Ship Repair, Moscow State Academy of Water Transport (MSAWT), 2-1 Novodanilovskaya nab., Moscow, 115407, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 43-52

The subject of this paper is the stability and strength of cold-formed and perforated steel sigma-section columns with steel sheathing of different thickness. Ceilings with and without steel sheathing of different thickness are tested to failure in compression on a laboratory machine, which was based on a manual hydraulic jack. Series of 4 experiments with full-scale walls (2.5 m height) were carried out. Also, for examination of the role of boundary conditions, the sheet in a ceiling is either left free or connected to base with screws.In civil engineering there are many experiments and methodologies for calculating the strength and buckling of ceiling with the sheathing of various materials, such as oriented strand board and gypsum board. However, for producing superstructures of ships the materials with high plastic properties and strength characteristics are required. For example steel possesses such properties. It was the main reason for conducting a series of experiments and studying the behavior of cold-formed steel columns with steel sheathing. During the experiments the deformation of the cross-section of three equally spaced cross sections was determined, as well as the axial deformation of the central column in the ceiling with steel sheathing.The test results showed the influence of the thickness of sheathing and boundary condition of a sheet on the strength and buckling of ceiling. According to the results of the tests it is necessary to evaluate the impact of the sheathing made of different materials and if necessary to carry out further tests.

DOI: 10.22227/1997-0935.2015.5.43-52

References
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  3. Shamanin A.Yu. O primenenie stal’nogo tonkostennogo kholodnognutogo profilya v kruiznom rechnom flote [On Applying Steel Thin-Walled Cold-Formed Profile in Cruise River Fleet]. Innovatsionnye preobrazovaniya, prioritetnye napravleniya i tendentsii razvitiya v ekonomike, proektnom menedzhmente, obrazovanii, yurisprudentsii, yazykoznanii, kul’turologii, ekologii, zoologii, khimii, biologii, meditsine, psikhologii, politologii, filologii, filosofii, sotsiologii, gradostroitel’stve, informatike, tekhnike, matematike, fizike : sbornik nauchnykh statey po itogam Mezhdunarodnoy nauchno-prakticheskoy konferentsii 29—30 aprelya 2014 goda [Innovative Transformations, Priority Directions and Tendencies of the Development in Economy, Project Management, Education, Law, Linguistics, Culturology, Sociology, Urban Development, Computer Science, Technology, Mathematics, Physics : Collection of Scientific Articles of the International Science and Practice Conference, April 29—30, 2014]. Saint Petersburg, Kul’tInformPress Publ., 2014, pp. 183—186. (In Russian)
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  19. Rybakov V.A., Nedviga P.N. Empiricheskie metody otsenki nesushchey sposobnosti stal’nykh tonkostennykh prosechno-perforirovannykh balok i balok so sploshnoy stenkoy [Empirical Methods of Estimating the Bearing Capacity of Steel Thin-Walled Expanded-Perforatef Beams and Beams with Solid Wall]. Inzhenerno-stroitel’nyy zhurnal [Magazine of Civil Engineering]. 2009, no. 8, pp. 27—30. (In Russian)
  20. Tusnina O.A., Heinisuo M. Metodika rascheta tonkostennykh gnutykh progonov na osnove rekomendatsiy Eurocode [Methods of Calculating Thin-Walled Bent Beams Basing on Eurocode Recommendations]. Promyshlennoe i grazhdanskoe stroitel’stvo [Industrial and Civil Engineering]. 2012, no. 11, pp. 67—70. (In Russian)
  21. Vatin N., Sinelnikov A., Garifullin M., Trubina D. Simulation of Cold-Formed Steel Beams in Global and Distortional Buckling. Applied Mechanics and Materials. 2014, vol. 633—634, pp. 1037—1041. DOI: http://dx.doi.org/10.4028/www.scientific.net/AMM.633-634.1037.

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