Analysis of the structure of liners used for the modernisation of brick collectors

• Autorzy: Wysocki Leszek , Madryas Cezary , Grosel Jacek

Identyfikatory

DOI

10.2478/sgem-2021-0031

• Języki publikacji: EN

Abstrakty

EN

Brick sewers were designed as egg-shaped, pear-shaped, bell-shaped, vaulted, and even rectangular (sometimes with granite ceilings and floor slabs). In exceptional cases, circular sections were also made of brick. Efforts were made in order to ensure optimal flow conditions, and also that the cross-section was adapted to the shape of the rock mass pressure line. This is due to the fact that the most advantageous shapes for masonry collectors are shapes in which no tensile stresses will occur in any part of the cross-section under the influence of external loads. Nevertheless, sewage conduits degrade over time. The boundary conditions of their use also change, which affects the magnitude of mechanical and hydraulic loads. Further use of a sewer in such a case requires its renewal, and less frequently, modernization that results from the necessity to change its function. This is usually done by introducing a new conduit into the interior of the renovated or modernized sewer, which in literature is called a liner. The aim of the analysis was to determine the thickness of the liners that strengthen the structures of brick channels with an inverted egg cross-section and with dimensions of 1050 × 700 mm, which are intended for gravitational sewage systems. The analysis included the performance of variant static and strength calculations for the assumption that the conduit after its modernization will be replaced with a conduit operating in the pressure system, which is a very rare requirement. It was assumed that the best solution would be to use a CIPP (Cured In Place Pipe) liner.

Słowa kluczowe

EN

brick sewer; renovation; CIPP liner; modernization of brick sewers

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2021
• Tom: Vol. 43, nr s1
• Strony: 501--509
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Wysocki Leszek

• Wroclaw University of Technology: Politechnika Wroclawska, Wroclaw, Poland

autor

Madryas Cezary

• Wroclaw University of Technology: Politechnika Wroclawska, Wroclaw, Poland

autor

Grosel Jacek

• Wroclaw University of Technology: Politechnika Wroclawska, Wroclaw, Poland

Bibliografia

• [1] ATV-DVWK-M – A127P. Static and strength calculations for the technical rehabilitation of sewage pipes by introducing liners or using the assembly method. Publishing house of Seidel Przywecki, January 2000.
• [2] ATV-DVWK – A127P. Static and strength calculations of conduits and sewage pipes. Publishing house of Seidel-Przywecki, Warsaw 2000.
• [3] Madryas C., Kolonko A., Wysocki L., Constructions of sewage conduits, Dolnośląskie Wydawnictwo Edukacyjne, Wroclaw 2002.
• [4] Nowakowski R., Urbaniak M., Water supply and sewage system of Wroclaw, MPWIK (Municipal Water and Sewerage Enterprise), Wroclaw 2011.
• [5] Szot A., The load-bearing capacity of sewage pipelines reinforced with continuous polymer liners. PhD Dissertation. Institute of Civil Engineering of Wroclaw University of Science and Technology. Wroclaw 2002.