Performance Evaluation of Internal Drains of Earthen Dams

Date

2018-12-01

Author

Çalamak, Melih
Yanmaz, Ali Melih

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

214
views

0
downloads

Seepage is always expected in earthen dams because they are made of porous materials. However, it should be always under control and its amount and pore-water pressures should be kept below acceptable limits. This can be satisfied by installing internal drains. This study reviews the characteristics of blanket, chimney, and toe drains and assesses their suitability and effectiveness for various material types and geometric characteristics in separate cases. Numerical simulations are conducted for steady-state seepage through a homogeneous and simple zoned earthen dam using the finite-element method. It is found that the seepage rate increases and the phreatic line shortens with an increase in the blanket drain length; the phreatic line becomes steeper within the core if the chimney drain material is relatively coarse; and the seepage rate becomes higher when the height of the toe drain is increased. The thickness of the blanket drain and the material gradation of the toe drain are found ineffective in the seepage behavior of the dams considered.

Subject Keywords

Civil and Structural Engineering, Safety, Risk, Reliability and Quality, Building and Construction

URI

https://hdl.handle.net/11511/39567

Journal

Journal of Performance of Constructed Facilities

DOI

https://doi.org/10.1061/(asce)cf.1943-5509.0001232

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Analytical Investigation of Lateral Strength of Masonry Infilled RC Frames Retrofitted with CFRP Erdem, Ibrahim; Akyüz, Uğurhan (American Society of Civil Engineers (ASCE), 2010-07-01) In this study, two reinforced concrete frames with hollow clay tile masonry infill walls, retrofitted with diagonally applied carbon fiber-reinforced polymer (CFRP), which were tested previously, were analytically investigated. A simple material model for the masonry infill wall strengthened with CFRP is suggested. The lateral strength of each rehabilitated frame was obtained by pushover analysis of four different models using a commercially available finite-element program, and the results were compared wi...
Renovation of a safety-inspection methodology for river bridges Yanmaz, Ali Melih; Caner, Alp (American Society of Civil Engineers (ASCE), 2007-09-21) River bridges and related infrastructural elements need to be monitored and inspected periodically for deterioration and loss of function due to aging, adverse hydraulic conditions, and chemical attacks. Necessary protective works and related actions should then be implemented to increase safety. Types of items to be inspected would be categorized as structural, geotechnical, hydraulic, and structural material conditions. Requirements for periodic inspections and the ways of handling these activities were d...
Comparison of Performance of Two Run-of-River Plants during Transient Conditions Çalamak, Melih; Bozkuş, Zafer (American Society of Civil Engineers (ASCE), 2013-10-01) Water hammer is an unsteady hydraulic problem commonly found in closed conduits of hydropower plants, water distribution networks, and liquid pipeline systems. Because of either a malfunction of a system or inadequate operation conditions, a pipeline may collapse or burst erratically, resulting in substantial damages and human loss in some cases. Therefore, it is crucial that engineers design and/or analyze projects with reliable computing methods for all foreseeable operation situations. In this paper, tra...
Seismic Performance Assessment of Masonry Buildings Using In Situ Material Properties Cobanoglu, Baran; ALDEMİR, ALPER; Demirel, Ismail Ozan; Binici, Barış; Canbay, Erdem; Yakut, Ahmet (American Society of Civil Engineers (ASCE), 2017-08-01) Seismic performance assessment of existing buildings requires the existing material's properties to be determined as this has a significant influence on the seismic risk. As one of the most common construction type in Turkey, masonry buildings are assessed generally based on the recommended material properties specified in relevant codes as opposed to testing of samples taken from the existing buildings. However, due to different material types and workmanship quality, the specified properties might be quit...
Seismic behaviour of roller compacted concrete dams under different base treatments Gharibdoust, Ali; ALDEMİR, ALPER; Binici, Barış (Informa UK Limited, 2019-09-09) The effect of base roughness on the seismic behaviour of roller compacted concrete gravity dams were investigated by pseudo-dynamically testing two 1/75 scaled specimens with smooth and rough base treatments. Both specimens were tested under the effect of three different hazard level earthquakes and also a pushover experiment was conducted to obtain the capacity curve of each specimen. The smooth base specimen exhibited significant sliding under the effect of the maximum credible earthquake motion. In contr...

Citation Formats

M. Çalamak and A. M. Yanmaz, “Performance Evaluation of Internal Drains of Earthen Dams,” Journal of Performance of Constructed Facilities, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39567.