Details:

Alternative Title:
Insights into the design and characteristics of the sedimentation process at multi-barrel culverts in Iowa
Creators:
Muste, Marian ; Ho, Hao-Che ; Mehl, Daniel
Muste, Marian ; Ho, Hao-Che ; Mehl, Daniel Less -
Corporate Creators:
Iowa Institute of Hydraulic Research
Corporate Contributors:
Iowa. Dept. of Transportation ; Iowa. Highway Research Board
Iowa. Dept. of Transportation ; Iowa. Highway Research Board Less -
Subject/TRT Terms:
[+]
Box Culverts Culverts Culverts--Iowa--Design And Construction Sedimentation Sedimentation And Disposition--Iowa
Publication/ Report Number:
IHRB Project TR-596
Resource Type:
Tech Report
Geographical Coverage:
Iowa
Edition:
Final report.
Corporate Publisher:
University of Iowa. IIHR Hydroscience and Engineering
Abstract:
The present study is an integral part of a broader study focused on the design and implementation of self-cleaning culverts, i.e.,

configurations that prevent the formation of sediment deposits after culvert construction or cleaning. Sediment deposition at culverts is

influenced by many factors, including the size and characteristics of material of which the channel is composed, the hydraulic

characteristics generated under different hydrology events, the culvert geometry design, channel transition design, and the vegetation

around the channel. The multitude of combinations produced by this set of variables makes the investigation of practical situations a

complex undertaking.

In addition to the considerations above, the field and analytical observations have revealed flow complexities affecting the flow and

sediment transport through culverts that further increase the dimensions of the investigation. The flow complexities investigated in this

study entail: flow non-uniformity in the areas of transition to and from the culvert, flow unsteadiness due to the flood wave propagation

through the channel, and the asynchronous correlation between the flow and sediment hydrographs resulting from storm events. To

date, the literature contains no systematic studies on sediment transport through multi-box culverts or investigations on the adverse

effects of sediment deposition at culverts. Moreover, there is limited knowledge about the non-uniform, unsteady sediment transport in

channels of variable geometry. Furthermore, there are few readily useable (inexpensive and practical) numerical models that can

reliably simulate flow and sediment transport in such complex situations.

Given the current state of knowledge, the main goal of the present study is to investigate the above flow complexities in order to provide

the needed insights for a series of ongoing culvert studies. The research was phased so that field observations were conducted first to

understand the culvert behavior in Iowa landscape. Modeling through complementary hydraulic model and numerical experiments was

subsequently carried out to gain the practical knowledge for the development of the self-cleaning culvert designs.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:c0bb286866d57c7d945359a0141ea46fd29ee6e5e7c1f2a422dc2303ac055247
Download URL:
https://rosap.ntl.bts.gov/view/dot/18064/dot_18064_DS1.pdf
File Type:

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