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A new backfill material enhancing axial bedding of district heating pipes

  • District heating cost reduction efforts are amongst others focusing on the use of a new backfillmaterial. The OTH.R is investigating this material in regard to the engineering of buried district heating pipes.The main focus of this soil-structure interaction problem is axial bedding to reduce thermal induced elongations.The backfill material is characterized and an axial non-linear spring-based calculation method is described.Centerpiece of the method is the contact-working-resistance-line (CWRL).A new Rod-Shear-Test based testingdevice Re-SIST to investigate the CWRL for the new backfill material is presented. The investigated CWRL isdescribed and compared to the CWRL for sand, which is the conventional backfill material. Solutions using thespring-based calculation method are presented and a comparative example of calculation shows the differencein axial bedding when the new backfill material is used.

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Metadaten
Author:Bernd Wagner, Thomas NeidhartGND
DOI:https://doi.org/10.1201/b21938
ISBN:978-1-138-03299-6
Parent Title (English):Energy Geotechnics - Proceedings of the 1st International Conference on Energy Geotechnics, ICEGT 2016, Kiel, Germany, 29-31 August 2016
Publisher:CRC Press
Place of publication:London
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2016
Release Date:2022/12/08
First Page:105
Last Page:112
Institutes:Fakultät Bauingenieurwesen
Fakultät Bauingenieurwesen / Labor für Geotechnik
research focus:Gebäude und Infrastruktur
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG