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.
Author: | Bernd Wagner, Thomas NeidhartGND |
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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 |