Tavares D.H.,Intertechne |
Suescun J.R.,BPR Inc |
Paultre P.,Université de Sherbrooke |
Padgett J.E.,Rice University
Journal of Bridge Engineering | Year: 2013
The seismic vulnerability of the Chemin des Dalles Bridge over Highway 55 located in Trois-Rivières (Quebec, Canada) was evaluated through fragility analysis using field- and laboratory-validated models. This approach offers an effective means to capture the uncertainties in ground-motion realizations, the demands placed on key structural components, and the capacity of the components to resist various levels of seismic excitation. A series of 180 synthetic ground-motion time histories (GMTHs) compatible with eastern Canada was used to capture the uncertainties related to the hazard. Nonlinear time history analyses were performed with these GMTHs and statistically analyzed to define the probabilistic seismic demand model for the abutments, bearings, and columns, which are the critical components. Data from the literature, coupled with sectional and damage mechanics analyses, were used to define the limit states (LSs) for these components. Bridge component and system fragility curves were used to evaluate the likely failure modes of the bridge and potential targets for retrofit, while accounting for key sources of uncertainty in the performance assessment. The results reveal the seismic vulnerability of this specific bridge and even offer insight into the seismic vulnerability of a typical multispan girder-type concrete bridge in Quebec. © 2013 American Society of Civil Engineers.
Campisano A.,University of Catania |
Cabot Ple J.,Acer |
Muschalla D.,University of Graz |
Pleau M.,BPR Inc |
And 2 more authors.
Urban Water Journal | Year: 2013
Real Time Control (RTC) has become an accepted technique for improving the performance of Urban Drainage Systems (UDS) due to its flexibility and sustainability. Numerous implementations of RTC have been reported during the last decades. At the same time, guideline documents and state-of-the-art reports have been published. Whereas the general aspects and challenges of planning and installation of RTC systems are well covered, there is a lack of information about the adequate equipment for RTC of UDS. After identifying and briefly discussing the basic components of RTC systems for UDS, this paper describes the specific components in detail. This comprises the introduction of available technologies for sensors, actuators, controllers and telemetry systems in the context of RTC and the discussion of their potential and limitations. Lessons learned from the field operational experiences and future trends and challenges are identified. © 2013 Copyright Taylor and Francis Group, LLC.
Simard A.,BPR Inc |
Pelletier G.,Laval University |
Rodriguez M.,Laval University
Journal of Water Supply: Research and Technology - AQUA | Year: 2011
The most critical water quality conditions are generally found at a water distribution network's extremities, given their high residence times. As chlorine injected at the water treatment plant (WTP) or at rechlorination sites has more time to react, residual chlorine concentrations at the extremities may not be enough to prevent microbial regrowth. This study focuses on the relationships between residence times, and residual chlorine and trihalomethane (THM) concentrations in a sector supplied with water coming directly from the WTP and from a large reservoir within the network. A hydraulic model was calibrated based on residence times obtained from a tracer study and a water quality characterization campaign at 47 sampling sites. Results showed that chlorine decay in water from the reservoir is faster than for water directly from the WTP. THM concentrations differ, with those in water from the reservoir being far higher than those from the WTP. A slight increase in THM concentrations is seen with residence time in both cases. By using a hydraulic model, we can evaluate - at any time and in any place - the impact of a hydraulic change on the network in terms of hydraulics, as well as in terms of the vulnerability associated with low residual chlorine and high THM concentrations. © IWA Publishing 2011.
Tagherouit W.B.,BPR Inc |
Bennis S.,École de Technologie Supérieure of Montreal |
Bengassem J.,École de Technologie Supérieure of Montreal
Computer-Aided Civil and Infrastructure Engineering | Year: 2011
Rehabilitation of sewer networks is a huge and very costly global problem that has often been treated on a crisis-based approach. The development of a rehabilitation program requires models and tools for assessing the condition and performance of sewers. The original contribution of this study is the development of a ranking scheme for sewer rehabilitation priorities. A fuzzy expert system was applied with inputs from a combined assessment of hydraulic, structural performance and potential failure consequences. The fuzzy structural system computes the global structural performance index for each pipe using internal condition, surrounding condition, and site vulnerability (SV) as inputs. The fuzzy hydraulic system uses hydraulic performance index (HPI), hydraulic performance impact, and SV to compute the global HPI. Finally, the fuzzy global system uses all these factors to compute the global performance index for each pipe. This methodology was successfully applied to the sewer system of the City of Laval in Canada. The results show how the fuzzy inference system may be used to establish rehabilitation priorities for each pipe section. The fuzzy expert system provides more realistic results than the intuitive approaches that use structural and hydraulic performance maximum and mean. © 2010 Computer-Aided Civil and Infrastructure Engineering.
BPR Inc | Date: 2010-12-07
Fertilizer for soil and potting soil; Fertilizers for soil and potting soil; Inoculants, namely, biological microorganisms used in fermentation of silage; Potting soil; Soil additives; Soil amendments; Soil conditioners for agricultural use; Soil conditioning preparations; Soil improving agents; Soil improving preparations.
BPR Inc | Date: 2013-07-18
Complex fertilizers; Fertilizers; Fertilizers for agricultural use; Fertilizers for domestic use; Fertilizing preparations; Inoculants, namely, biological microorganisms used in fermentation of silage; Mixed fertilizers; Natural fertilizers; Non-chemical bio-fertilizers; Nutritive additive to enhance the biological activity of water, soil, seeds and plants for purposes of fertilization and bioremediation of pollutants; Organic fertilizers.
BPR Inc | Date: 2013-11-20
Chemicals for use in agriculture, horticulture and forestry except fungicides, herbicides, insecticides and parasiticides; Chemicals for use in aquaculture; Inoculants, namely, biological microorganisms used in fermentation of silage; Microbial spill control liquid for bioremediation; Nutritive additive to enhance the biological activity of water, soil, seeds and plants for purposes of fertilization and bioremediation of pollutants.
BPR Inc | Date: 2011-09-13
Fertilizers; Fertilizers for agricultural use; Fertilizers for domestic use; Natural fertilizers; Non-chemical bio-fertilizers; Complex fertilizers; Fertilizing preparations; Mixed fertilizers; Nutritive additive to enhance the biological activity of water, soil, seeds and plants for purposes of fertilization and bioremediation of pollutants.
BPR Inc | Date: 2012-09-13
Fertilizers; Fertilizers for agricultural use; Fertilizers for domestic use; Fertilizing preparations; Inoculants, namely, biological microorganisms used in fermentation of silage; Natural fertilizers; Non-chemical bio-fertilizers; Nutritive additive to enhance the biological activity of water, soil, seeds and plants for purposes of fertilization and bioremediation of pollutants; Organic fertilizers.