Calculation of spatial prestressed combined composite trussing constructions

Authors

  • B. H. Demchyna Institute of Building and Environmental Engineering NU "Lviv Polytechnic"., Ukraine
  • Yu. Yu. Vybranets Institute of Building and Environmental Engineering NU "Lviv Polytechnic"., Ukraine
  • Yu. I. Ivanyk

Keywords:

combined system, composite construction, trussing construction, test, specimens

Abstract

Purpose. Based on widely used of composite construction in building, you should more study them strength and strain. For this produced three full-scale survey design, consisting of a metal trussing constructions and reinforced concrete slabs of different shapes. Methodology. Steel trussing design is a combined beam with a hard top and a belt suspension. After a set of concrete strength is composite section that leads to change the position of the neutral axis. In the design is the ability to achieve redistribution efforts in the design by getting points on poles reverse and reduce the maximum stress in the upper sections of the belt construction. For the perception of negative moments in expected additional reinforcement plate in the upper zone. To determine the actual strength characteristics of the materials tested additional samples of concrete blocks and valves. When loading experimental models used sandbags for even distribution of the applied force. Step 3 downloads adopted kN/m2, the maximum load was 21 kN/m2. One load was monitored application is applied non-symmetric. Equability controlled by dynamometers mounted on supports. Findings. Realized comparison value of strain, stress and deformation experimental with theoretical, which were calculated according to current regulations in Ukraine documents. Reported high convergence results for the full-scale structures. Deviationsfrom theoretical experimental variables was -12.2 ...-1.1 %. Originality. Made experimental study of three dimensional models of field composite trussing constructions with different types of boards: the usual flat shield on a metal mold and profiled decking along and across the main structures. Combining the joint operation was carried out in flexible metal anchor loop type. The calculation was carried out on samples developed technique for spatial cross-ridge system. Practical value. Using of composite overlapping structures in construction will reduce a lot of elements compared to metal or reinforced concrete, thereby reducing costs.

Author Biographies

B. H. Demchyna, Institute of Building and Environmental Engineering NU "Lviv Polytechnic".

Department of Building Constructions and Bridges,

Dr. Sc. (Tech.), Prof.

Yu. Yu. Vybranets, Institute of Building and Environmental Engineering NU "Lviv Polytechnic".

Department of Building Production,

PhD student.

Yu. I. Ivanyk

PhD student.

References

1. Bely D.F. K proektirovaniu sechenii metalicheskikh predvaritelno napriazhonnykh balok s zatiazhkami [For the design of sections of metal beams with prestressed torque], 1976, p. 51-53. 2. Biryulov V.V. O stalnykh balkakh s predvaritelno napriazhonnoi zatiazhkoi [About steel beams with prestressed tightening], Construction and architecture, 1958, № 3, p. 70-78. 3. Bliharsky Z.Ya. Prochnost, deformativnost, poteri napriazheni predvaritelno napriazhonnykh stalebetonnykh balok s vnieshnim armirovaniem. Avtoreferat Diss. [Strength, deformability, losing stress prestressed steel-concrete beams with external reinforcement. Author’s abstract.]. Minsk, 1990. 16 p. 4. Vybranets Yu.Yu., Ivanyk I.G., Vihot S.I. Zastosuvannia kombinovanykh stalezalizobetonnykh konstruktsii perekryttia budivli vyrobnychogo korpusu [Using of combined composite overlapping structures in industrial building] "Mechanics and Physics of destruction of building materials and structures", Lviv, 2009, issue 8. - p. 433-439. 5. Konstruktivnye i tekhnologicheskie osobennosti stalebetona [Constructive and technology specials of composite construction], Kharkiv, 2013. 6. Gogol M.V. Problemy ekonomichnosti nesuchykh metalokonstruktsii perekryt i pokryt Economy problems of steel coatings and overlapping], Theory and practice of building, Lviv, 2004, p.42-45. 7. Dobriansky I., Barabash V., Burchenya S. Zastosuvannia stalebetonnykh konstruktsii v Ukraini ta za kordonom [Application of composite structures in Ukraine and abroad], Architecture and agricultural construction, Lviv, 2010, № 11, P. 90-101. 8. Zamaliev F.S., Shaimardanov R.I. Eksperimentalnie issledovania stalezhelezobetonnykh konstruktsii na krupnomasshtabnykh modeliakh [Experimental studies of composite structures for large-scale models], Kazan, Izvestiya KazGASU, 2008. 9. Ivanyk I.G. Research of composite combined prestressed constructions /Vybranets Yu.Yu., Ivanyk Yu.I.// Architecture Building: Acta Scientiarum Polonorum, 2014. – P. 81-88. - (№ 13(2)). 10. Kvasha V.G. Inzhenernyi metod prostorovoho rozrakhunku perekhresno-rebrystykh balochnykh zalizobetonnykh system [Engineering method of calculating spatial cross-ribbed reinforced concrete beam systems], Kyiv, 1994, p.122. 11. Klymenko F.E. Stalebetonnye konstruktsii s vnieshnim polosovym armirovaniem [Composite structure reinforced with an external bandpass], Kyiv, 1984, 88 p. 12. Biegus A. Projektowanie zespolonych konstrukcji stalowo-betonowych według eurokodu / Antoni Biegus – Wrocław: Politechnika Wrocławska wydział budownictwa lądowego i wodnego – 2012 – 66 s. Biegus A. Design of composite steel and concrete structures according to Eurocode. Wroclaw, University of Technology Faculty of civil engineering, 2012, 66 p. 13. G. Hanswille The behaviour of steel-concrete composite beams under repeated loading /G. Hanswille, M. Porsch, C. Ustundag — Wuppertal, Germany: Institute of steel and composite structures, University of Wuppertal — NSCC — 2009.

Issue

Section

Innovative lifecycle technology of housing and civil, industrial and transportation purposes