Concurrent optimization of rail transit alignments and station locations

X Lai, P Schonfeld - Urban Rail Transit, 2016 - Springer
Designing urban rail transit systems is a complex problem, which involves the determination
of station locations, track geometry, and various other system characteristics. Most of the …

Underground metro interstation horizontal-alignment optimization with an augmented rapidly exploring random-tree connect algorithm

D Yang, Q He, S Yi - Journal of Transportation Engineering, Part A …, 2020 - ascelibrary.org
The design of an underground metro alignment in an urban area is complex and
challenging. The metro alignment constantly invades districts with high-density buildings …

Optimizing the energy-efficient metro train timetable and control strategy in off-peak hours with uncertain passenger demands

J Feng, X Li, H Liu, X Gao, B Mao - Energies, 2017 - mdpi.com
How to reduce the energy consumption of metro trains by optimizing both the timetable and
control strategy is a major focus. Due to the complexity and difficulty of the combinatorial …

A vertical railroad alignment design with construction and operating costs

M Kim, N Marković, E Kim - Journal of Transportation Engineering …, 2019 - ascelibrary.org
Vertical alignment profiles are generally governed by geographical constraints; however,
vertical alignment design is important, as it may significantly affect operating decisions such …

Energy-efficient rail transit vertical alignment optimization: Gaussian pseudospectral method

D Li, X Dong, J Cao, S Zhang, L Yang - Journal of Transportation …, 2022 - ascelibrary.org
Energy efficiency is an important research topic in rail transit operations. Energy-efficient
vertical alignment is a practical consideration during the line design process. Proper vertical …

Simulation-based multistage optimization model for railroad alignment design and operations

ME Kim, E Kim - Journal of Transportation Engineering, Part A …, 2020 - ascelibrary.org
In railroads, the vertical alignment design is closely related to the cost of operation because
it may affect the required energy consumptions. By considering an innovative vertical …

Post-construction alignment revision in direct-fixation railroad tracks

E Kim, M Kim, G Delos, T Clark - Sustainability, 2019 - mdpi.com
In railroad construction—in particular, direct-fixation tracks—a longitudinal concrete block
known as a “plinth” is used to elevate the profiles of the railroad track from the aerial …

Optimizing Speed Profiles for Sustainable Train Operation with Wayside Energy Storage Systems

LA Allen - 2022 - search.proquest.com
Large hauling capability and low rolling resistance has put rail transit at the forefront of mass
transportation mode sustainability in terms of congestion mitigation and energy …

Optimizing resiliency of train operations in an underground metro: A hybrid discrete-event simulation and response surface methodology

A Shahabi, S Raissi, K Khalili-Damghani… - Journal of Industrial …, 2021 - jiems.icms.ac.ir
Avoiding the passengers extra waiting time is a vital task for rail planners. The current
research focused on minimizing the passenger waiting time on the presence of real …

[PDF][PDF] PAUL M. SCHONFELD, P HD, PE

ION PROFESSIONALREGISTRAT - cee.umd.edu
PAUL M. SCHONFELD, P HD, PE Page 1 PAGE 1 PAUL M. SCHONFELD, P HD, PE
PROFESSOR DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING …