5 results
Search Results
2. Ultimate capacity of barrier-deck anchorage in MTQ TL-5 barrier reinforced with headed-end, high-modulus, sand-coated GFRP bars.
- Author
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Rostami, Michael, Sennah, Khaled, and Afefy, Hamdy M.
- Subjects
- *
BARRIER beaches , *BRIDGE design & construction , *GLASS-reinforced plastics , *CLAY-reinforced polymeric nanocomposites , *BRIDGES - Abstract
This paper presents an experimental program to justify the barrier design at the barrier-deck junction when compared to the factored applied transverse vehicular loading specified in the Canadian Highway Bridge Design Code (CHBDC). Compared to the dimensioning and the glass fibre reinforced polymer (GFRP) bar detailing of a recently crash-tested GFRP-reinforced barrier, the adopted barrier configurations in this paper were similar to those specified by Ministry of Transportation of Québec (MTQ) for TL-5 barrier except that the base of the barrier was 40 mm narrower and the deck slab is of 200 mm thickness, leading to reduction in the GFRP embedment depth into the deck slab. Four full-scale TL-5 barrier specimens were tested to collapse. Correlation between the experimental findings and the factored applied moments from CHBDC equivalent vehicle impact forces resulting from the finite-element modelling of the barrier-deck system was conducted followed by recommendations for use of the proposed design in highway bridges in Québec. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
3. An impact analysis of climate change on the forestry industry in Quebec.
- Author
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Boccanfuso, Dorothée, Savard, Luc, Goyette, Jonathan, Gosselin, Véronique, and Mangoua, Clovis Tanekou
- Subjects
- *
CLIMATE change , *FORESTS & forestry , *GROSS domestic product , *DYNAMICS , *ECONOMIC history - Abstract
Quebec's forests represent 20% of Canadian forests and 2% of the world forests. Over the entire planet, forests play a major role in habitat preservation and in supplying goods and services to the population. However, climate change will have an impact on the forest through inter alia increased droughts, forest fires, warmer weather, and infestations. In this paper, we analyze the economic impact of climate change on the forest industry in Quebec over a 40-year period using a recursive dynamic computable general equilibrium model. We find that the climate change effects will be relatively weak on most macroeconomic variables as agents adjust their behavior over time and factors are reallocated across sectors. We find that climate change could generate losses in gross domestic product of up to Can$300 million (0.12% of gross domestic product) at the end of a 40-year period for Quebec's economy. However, we find relatively more important effects within the sectors of the forest industry, with losses ranging from 3% to 7.5%. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
4. Quartz arenites of the Cambro-Ordovician Kamouraska Formation, Quebec Appalachians, Canada: II. Eolian sands in deep-sea sedimentary gravity-flow deposits1.
- Author
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Malhame, Pierre, Hesse, Reinhard, and Rygel, Michael
- Subjects
- *
ERGS (Landforms) , *SEDIMENTATION & deposition , *QUARTZ , *ARENITES , *ORDOVICIAN Period - Abstract
The Kamouraska Formation is a quartz-arenitic unit of latest Cambrian - earliest Ordovician age in the Quebec Appalachians that was deposited by hyperconcentrated to concentrated density flows in a meandering submarine canyon on the continental slope bordering the Iapetus Ocean, as outlined in a companion paper. Detailed petrographic study of the quartz arenites of the Kamouraska Formation combined with scanning electron microscopy of grain surface textures suggests that the quartz sands are of eolian origin having been derived from an inland desert or, less likely, a barrier beach dune system. Transport of the mature quartz-arenitic sand onto the shelf and deposition into the deep sea was not accompanied by substantial mixing with material from other sources thus preserving the inherited eolian characteristics. A modern analogue for the eolian interpretation of the deep-sea quartz-arenite beds is as follows: thick, Late Pleistocene eolian sand beds on a modern abyssal plain in the East Atlantic referred to as eolian-sand turbidites that were deposited in the deep sea during glacial sea level lowstands when eolian sand transport to canyon heads was enabled by an exposed and shortened shelf. Similarly, an established sea level lowstand at the Cambro-Ordovician boundary would have facilitated the introduction of eolian sand of the Kamouraska Foundation into canyon heads on the upper slope from where turbidity currents and related density flows were triggered. Correlation of the Kamouraska Formation with the quartz arenites of the Cairnside Formation of Quebec (Keeseville Formation in northern New York State, Nepean Formation in southern Ontario) links the deep-sea deposits with remnants of an inland dune system. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
5. Adapting a rapid seismic screening method for the evaluation of school buildings.
- Author
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Tischer, Helene, Mitchell, Denis, and McClure, Ghyslaine
- Subjects
- *
EARTHQUAKE engineering , *SCHOOL building design & construction , *SCHOOL safety , *LATERAL loads , *BUILDING failures , *EARTHQUAKE zones , *SCHOOLS - Abstract
The poor seismic performance of schools has made their assessment and retrofit a priority in moderate and high seismic zones. Given the large building inventory to evaluate, rapid seismic screening methods are often implemented to prioritize detailed interventions. This paper describes schools' specific characteristics to be considered when applying these procedures, and shows how the FEMA154 approach can be modified to consider them. The adapted method is a score assignment procedure based on the following six essential characteristics: seismicity, lateral load resisting system, construction year, potential structural weaknesses (or irregularities), potential for pounding of adjacent buildings, and local soil conditions. The method is illustrated with case studies, applied to 101 school buildings in Quebec. Results show that most of the parameters considered influence the final scores. In particular, the treatment of structural weaknesses and potential for pounding proved effective in differentiating the likely seismic performance of the buildings. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
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