We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Numerical Assessment of Microtunnelling Induced Pavement Settlement.
- Authors
Alzabeebee, Saif; Keawsawasvong, Suraparb
- Abstract
There is an increased demand on the use of microtunnelling for the installation of new buried pipelines. However, the effect of microtunnelling on the performance of pavements is poorly understood. Hence, this paper aims at addressing this gap in knowledge. A robust three-dimensional finite element model that considers the combined influence of the traffic load and microtunnelling has been developed to study the microtunnelling induced pavement settlement. The influence of the stress level and volume change on the behavior of the subgrade, subbase, and base has been considered using the appropriate soil constitutive model. In addition, a parametric study has been carried out to examine the effect of the presence of the traffic load, backfill height, thickness and stiffness of the surface layer, the diameter of the microtunnelling, and shear strength of the subgrade soil on the microtunnelling induced pavement settlement. It has been found that the traffic load has a remarkable influence on the trend of the relationship between the maximum microtunnelling induced pavement settlement and the backfill height. In addition, the percentage increase of settlement due to the presence of the traffic load ranges between 60 and 674%. Moreover, increasing the diameter of the microtunnelling dramatically rises the settlement of the pavement. Furthermore, the stiffness and thickness of the surface layer were also found to affect the microtunnelling induced pavement settlement. Thus, it is necessary to consider the effect of traffic load, microtunnelling diameter, and backfill height in the assessment of the influence of the microtunneling on the response of the pavement. Importantly, the reported results are beneficial to designers working on the assessment of the microtunnelling induced pavement settlement.
- Subjects
PAVEMENTS; SHEAR strength of soils; FINITE element method; FLEXIBLE pavements
- Publication
Geotechnical & Geological Engineering, 2023, Vol 41, Issue 3, p2173
- ISSN
0960-3182
- Publication type
Article
- DOI
10.1007/s10706-022-02368-3