A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New Approaches to Trenchless Renewal of Culverts
Culverts are considered nowadays by DOT's as assets; however their value may not be apparent until repair or replacement costs appear. Rehabilitation of culverts can be accomplished using several methods; nonetheless, replacement of culverts can only be achieved by just a few such as: open-cut, pipe bursting and pipe eating or microtunneling. Even though they provide culvert upsizing, neither is economical nor has been widely studied. This ongoing research investigates the current need on replacing obsolete culverts, explains the current trends and methods used to provide culvert renewal and a suggests new conceptual model on how to replace culverts via trenchless using modifications and advantages of other well established trenchless construction methods. The main focus of the new model is to enable culvert upsizing by either ramming or jacking a new and bigger cross sectional pipe over the external surface of the host culvert. Once the encasing culvert gets to the other end of the embankment, the host culvert is either pushed or pulled. In this manner the culvert gets upsized as well as renewed. The process is finalized by cleaning the new surface to detach any soil particles. For this paper the authors provide a method description, a suggested installation procedure and materials to use depending on whether jacking or ramming the new culvert pipe.
New Approaches to Trenchless Renewal of Culverts
Culverts are considered nowadays by DOT's as assets; however their value may not be apparent until repair or replacement costs appear. Rehabilitation of culverts can be accomplished using several methods; nonetheless, replacement of culverts can only be achieved by just a few such as: open-cut, pipe bursting and pipe eating or microtunneling. Even though they provide culvert upsizing, neither is economical nor has been widely studied. This ongoing research investigates the current need on replacing obsolete culverts, explains the current trends and methods used to provide culvert renewal and a suggests new conceptual model on how to replace culverts via trenchless using modifications and advantages of other well established trenchless construction methods. The main focus of the new model is to enable culvert upsizing by either ramming or jacking a new and bigger cross sectional pipe over the external surface of the host culvert. Once the encasing culvert gets to the other end of the embankment, the host culvert is either pushed or pulled. In this manner the culvert gets upsized as well as renewed. The process is finalized by cleaning the new surface to detach any soil particles. For this paper the authors provide a method description, a suggested installation procedure and materials to use depending on whether jacking or ramming the new culvert pipe.
New Approaches to Trenchless Renewal of Culverts
Calderon, Diego (author) / Najafi, Mohammad (author)
Pipelines Specialty Conference 2009 ; 2009 ; San Diego, California, United States
Pipelines 2009 ; 865-875
2009-08-12
Conference paper
Electronic Resource
English
New Approaches to Trenchless Renewal of Culverts
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