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Contact Info
e-mail : resat@hacettepe.edu.tr
tel : 312-2977767
fax : 312-2992039 |
Information
Reşat Ulusay is Professor in the Department of Geological Engineering at Hacettepe University and also Head of Applied Geology Division of this department. He took his MSc and PhD degrees in Geological Engineering and Engineering Geology, respectively, at Hacettepe University (1975), and PhD degree in Engineering Geology at the Middle East Technical University (1991).
He worked at the General Directorate of Mineral Research and Exploration Institute (MTA) between June 1975 and December 1995. Between June 1975 and March 1976 he was involved in a project as site engineer under the supervision of alien experts within the framework of uranium exploration supported by United Nations at western Turkey. After his military service completed in August 1977, he joined to a group to establish and develop the Rock and Soil Mechanics Division and Test Centre at the Feasibility Studies Department of MTA, under the auspices of United Nations Technical Cooperation Department. Between August 1977 and December 1995 he participated to a number of geotechnical projects mainly including slope stability, rock mass characterization, preliminary support selections for underground openings, site selection and rock and soil mechanics laboratory testing as engineer, project leader, head of division and deputy director of the department responsible from geotechnical studies. He has been a faculty member of Hacettepe University since December 1995.
His main fields of research and interest are: Engineering geology, rock mechanics and soil mechanics (particularly stability of slopes, rock mass characterization and classification, geotechnical site investigations, earthquake-associated soil liquefaction and ground behaviour, attenuation relationships, swelling, rock weathering, geomechanical laboratory testing). He was the member of National Earthquake Council between 2004 and 2007. He is currently the President of the Commission on Testing Methods of International Society for Rock Mechanics (ISRM) and the member of the Commission on Underground Rock Engineering Design Methods of ISRM, member of the International Geoscience Programme (IGCP) Scientific Board, and member of the Executive Committee of the International Association of Engineering Geology and the Environment (IAEG) Turkish National Group. In addition, he is the editor of three national journals on earth sciences, and associate editor and member of the editorial boards of four international journals on engineering geology and rock mechanics.
He has four books in Turkish and is the co-editor of an international book, and co-author of two chapters in an international book. In addition, he has 124 papers published in international journals and conference proceedings related to the above mentioned topics.
(For more information please visit the web site: http://yunus.hacettepe.edu.tr/~resat)
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Publication Info
Papers Published in International Journals:
1. ULUSAY, R. and YOLERİ, M.F., 1993. Shear strength characteristics of discontinuities in weak, stratified, clay-bearing coal measures encountered in Turkish surface coal mining. Bulletin of the International Association of Engineering Geology, 48, 63-71.
2. ULUSAY, R., AKSOY, H. and İDER, M.H., 1993, Geotechnical approaches for the design of a railway tunnel section in andesite. Engineering Geology, 34(1/2), 81-93.
3. ULUSAY, R., YOLERİ, M.F. and DOYURAN, V., 1993, Application of a rock buttress in the design of slopes of a strip coal mine adjacent to a highway. Canadian Geotechnical Journal, 20(3), 391-408.
4. ULUSAY, R. and DOYURAN, V., 1993, Characteristics of a multiple retrogressive failure in a coal mine in southwest Turkey. Engineering Geology, 36(1/2), 79-89.
5. ULUSAY, R., TÜRELİ, K. and İDER, M.H., 1994, Prediction of engineering properties of a selected litharenite sandstone from its petrographic characteristics using correlation and multivariate statistical techniques. Engineering Geology, 37, 135-157.
6. ULUSAY, R. and AKSOY, H., 1994, Assessment of failure mechanism of highwall slope under spoil pile loadings at a coal mine. Engineering Geology, 38, 117-134.
7. ULUSAY, R., YOLERİ, M.F., ÇAĞLAN, D. and ARIKAN, F., 1995. Design evaluations for spoil piles at a strip coal mine considering safety of the haul road. International Journal of Surface Mining, Reclamation and Environment, 9, 133-140.
8. ULUSAY, R., ARIKAN, F., YOLERİ, M.F. and ÇAĞLAN, D., 1995, Engineering geological characterization of coal mine waste material and an evaluation in the context of back-analysis of spoil pile instabilities in a strip mine, SW Turkey. Engineering Geology, 40, 77-101.
9. ULUSAY, R., ÇAĞLAN, D., ARIKAN, F. and YOLERİ, M.F., 1996, Characteristics of bi-planar wedge spoil pile instabilities with particular reference to the analysis of methods to improve stability of piles adjacent to highwalls. Canadian Geotechnical Journal, 33, 58-79.
10. TOSUN, H. and ULUSAY, R., 1996, Engineering geological characterization and evaluation of liquefaction susceptibility of foundation soils at a dam site, Southwest Turkey. Environmental and Engineering Geosciences, 3 (3), 389-409.
11. KUMSAR, H., AYDAN, Ö., ULUSAY, R., and JEONG, G.C., 1996. A three-dimensional stability assessment for rock and soil slopes. Journal of Matsumae International Foundation, 1996 issue, 159-174.
12. AYDAN, Ö., ULUSAY, R. and KAWAMOTO, T., 1997, Assessment of rock mass strength for underground excavations. International Journal of Rock Mechanics and Mining Science, 34 (3/4), 777-786.
13. ULUSAY, R. and GÖKÇEOĞLU, C., 1997. The modified block punch index test. Canadian Geotechnical Journal, 34 (6), 991-1001.
14. SÖNMEZ, H., ULUSAY, R. and GÖKÇEOĞLU, C., 1998. A practical procedure for the back-analysis of slope failures in closely jointed rock masses. International Journal of Rock Mechanics and Mining Science, 35 (2), 219-233.
15. ULUSAY, R. and GÖKÇEOĞLU, C., 1998. An experimental study on the size effect in block punch index test and its general usefulness. International Journal of Rock Mechanics and Mining Science, 35 (4/5), 628-629.
16. SÖNMEZ, H. and ULUSAY, R., 1999. Modifications to the geological strength index (GSI) and their applicability to stability of slopes. International Journal of Rock Mechanics and Mining Science, 36 (6), 743-760.
17. KUMSAR, H., AYDAN, Ö. and ULUSAY, R., 1999. Dynamic and static assessments for rock slopes against wedge failures. Rock Mechanics and Rock Engineering, 33 (1), 31-51.
18. ULUSAY, R. and GÖKÇEOĞLU, C., 1999. A new test procedure for the determination of the Block Punch Index and its possible uses in rock engineering. ISRM News Journal, Issue 6 (1), 50-54.
19. AYDAN, Ö., ULUSAY, R., YÜZER, E. and ERDOĞAN , M., 1999. Man-made rock structures in Cappadocia, Turkey and their implications in rock mechanics and engineering. ISRM News Journal, Issue 6 (1), 63-73.
20. GÖKÇEOĞLU, C., ULUSAY, R. and SÖNMEZ, H., 2000.Factors affecting the durability of selected weak and clay-bearing rock from Turkey, with particular emphasis on the influence of the number of drying and wetting cycles. Engineering Geology, 57, 215-237.
21. ULUSAY, R., AYDAN, Ö., KUMSAR, H. and SÖNMEZ, H., 2000. Engineering geological characteristics of the 1998 Adana-Ceyhan Earthquake with particular emphasis on liquefaction phenomena and the roll of soil behavior. Bulletin of Engineering Geology and the Environment, 59 (2), 99-118.
22. ULUSAY, R., GÖKÇEOĞLU, C., SÖNMEZ, H., and TUNCAY, E. 2001. Causes, mechanism and environmental impacts of instabilities at Himmetoğlu coal mine and possible remedial measures. Environmental Geology, 40 (6), 769-786.
23. TUNCAY, E., and ULUSAY, R., 2001. Deterministic and probabilistic treatments of multiplanar failures at Himmetoğlu (Turkey) coal mine. Canadian Geotechnical Journal, 38, 828-849.
24. ULUSAY, R., GÖKÇEOĞLU, C., and SÜLÜKÇÜ, S., 2001. Draft ISRM suggested method for determining block punch strength index (BPI). International Journal of Rock Mechanics and Mining Sciences, 38, 1113-1119.
25. SÜLÜKÇÜ, S., and ULUSAY, R., 2001. Evaluation of the block punch index test with particular reference to the size effect, failure mechanism and its effectiveness in predicting rock strength. International Journal of Rock Mechanics and Mining Sciences, 38, 1091-1111.
26. AYDAN, Ö., and ULUSAY, R., 2002. Back-analysis of a seismically induced highway embankment failure during the 1999 Düzce earthquake. Environmental Geology, 42 (6), 621-631.
27. ULUSAY, R., AYDAN, Ö., and HAMADA, M., 2002.The behavior of structures built on active fault zones : Examples from the recent earthquakes of Turkey. Structural Engineering/ Earthquake Engineering - Journal of the Japan Society for Civil Engineers, 19 (2) (Special Issue), 149-167.
28. AYDAN, Ö., KUMSAR, H., and ULUSAY, R., 2002. How to infer possible mechanism and characteristics of earthquakes from striations and ground surface traces of existing faults. Structural Engineering / Earthquake Engineering - Journal of the Japan Society for Civil Engineers, 19 (2) (Special Issue).
29. ERGÜLER, Z.A., and ULUSAY, R., 2002, A simple test and predicting models for assessing swell potential of Ankara (Turkey) Clay. Engineering Geology, 67, 331-352.
30. AYDAN, Ö., and ULUSAY, R., 2003. Geotechnical and environmental characteristics of man-made underground structures in Cappadocia, Turkey. Engineering Geology, 69 (3/4), 245-272.
31. TONOZ, M.C., GÖKÇEOĞLU, C., and ULUSAY, R., 2003. A laboratory-scale experimental investigation on the performance of lime columns in expansive Ankara (Turkey) clay. Bulletin of Engineering Geology and the Environment, 62 (2), 91-106.
32. SÖNMEZ, H., GÖKÇEOĞLU, C., and ULUSAY, R., 2003. An application of fuzzy sets to the Geological Strength Index (GSI) System used in rock engineering. Engineering Applications of Artificial Intelligence, 16 (3), 251-269.
33. ERGÜLER, Z.A., and ULUSAY, R., 2003. Engineering characteristics and environmental impacts of the expansive Ankara Clay, and swelling maps for SW and central parts of the Ankara (Turkey) metropolitan area. Environmental Geology, 44 (8), 979-992.
34. MASAKATSU, M., AYDAN, Ö., and ULUSAY, R., 2003. Quick report on the May 1 2003 Bingöl earthquake. Civil Engineering–Journal of Japan Society for Civil Engineers, 88 (8), 58-61 (in Japanese).
35. ULUSAY, R., AYDAN, Ö., ERKEN, A., TUNCAY, E., KUMSAR, H., and KAYA, Z., 2004. An overview of geotechnical aspects of the Çay-Eber (Turkey) earthquake. Engineering Geology, 73, 51-70.
36. ULUSAY, R., and KURU, T., 2004. 1998 Adana-Ceyhan (Turkey) earthquake and a preliminary microzonation based on liquefaction potential for Ceyhan town. Natural Hazards, 32, 59-88.
37. SÖNMEZ, H., GOKCEOĞLU, C., and ULUSAY, R., 2004. Indirect determination of the modulus of deformation of rock masses based on the GSI system. International Journal of Rock Mechanics and Mining Sciences, 41, 849-857.
38. SÖNMEZ, H., GÖKÇEOĞLU, C., and ULUSAY, R., 2004. A Mamdani fuzzy inference system for geological strength index and its use in slope stability assessments. International Journal of Rock Mechanics and Mining Sciences, 41(3), 513-514, SINOROCK 2004 Paper 3B01.
39. ZORLU, K., ULUSAY, R., OCAKOĞLU, F., GÖKÇEOĞLU, C., and SÖNMEZ, H., 2004. Predicting rock properties of selected sandstones using petrographic thin-section data. International Journal of Rock Mechanics and Mining Sciences, 41 (3), 370-371, SINOROCK 2004 Paper 1A 16.
40. ULUSAY, R., TUNCAY, E., SÖNMEZ, H., and GÖKÇEOĞLU, C., 2004. An attenuation relationship based on Turkish strong ground motion data and iso-acceleration map of Turkey. Engineering Geology, 74, 265-291.
41. IŞIK, N.S., DOYURAN, V., and ULUSAY, R., 2004. Assessment and stabilization of a coastal landslide with building loads at the Black Sea Region of Turkey. Engineering Geology, 75 (1), 69-88.
42. ÇEVİK, S.Y., and ULUSAY, R., 2005. Engineering geological assessments of the repeated plane shear slope instability threatening Babadag (Turkey) and its environmental impacts. Environmental Geology, 47, 685-701.
43. AVŞAR, E., ULUSAY, R., and ERGÜLER, Z.A., 2005. Swelling properties of Ankara (Turkey) Clay with carbonate concretions. Environmental and Engineering Geosciences, XI (1), 75-95.
44. DUMAN, T.Y., ÇAN, T., ULUSAY, R., KEÇER, M., EMRE, Ö., ATEŞ, Ş., and GEDİK, İ., 2005. A geohazard reconnaisance study based on geoscientific information for development needs of the western region of İstanbul (Turkey). Environmental Geology, 48 (7), 871-888.
45. ULUSAY, R., and AYDAN, Ö., 2005. Characteristics and geo-engineering aspects of the 2003 Bingöl (Turkey) earthquake. Journal of Geodynamics, 40, 334-346.
46. KAŞMER, Ö., ULUSAY, R., and GÖKÇEOĞLU, C., 2006. Spoil pile instabilities with reference to a strip coal mine in Turkey: mechanisms and assessment of deformations. Environmental Geology, 49, 570-585.
47. KANIBİR, A., ULUSAY, R., and AYDAN, Ö., 2006. Assessment of liquefaction and lateral spreading on the shore of Sapanca Lake during the Kocaeli (Turkey) earthquake. Engineering Geology, 83, 307-331.
48. ULUSAY, R., GÖKÇEOĞLU, C., TOPAL, T., SÖNMEZ, H., TUNCAY, E., ERGÜLER, Z.A., and KAŞMER, Ö., 2006. Assessment of environmental and engineering geological problems for the possible re-use of an abandoned rock-hewn settlement in Urgüp (Cappadocia), Turkey. Environmental Geology, 50, 473-494.
49. HASANÇEBİ, N., and ULUSAY, R., 2006. Evaluation of site amplification and site period using different methods for an earthquake-prone settlement in western Turkey. Engineering Geology, 87, 85-104.
50. KAŞMER, Ö., and ULUSAY, R., 2006. Stability of spoil piles at two adjacent coal mines in Turkey: Geotechnical characterization and design considerations. Environmental and Engineering Geosciences, XII (4), 337-352.
51. ULUSAY, R., AYDAN, Ö., and KILIÇ, R., 2007. Geotechnical assessment of the 2005 Kuzulu landslide (Turkey). Engineering Geology, 89 (1-2), 112-128.
52. HASANÇEBİ, N., and ULUSAY, R., 2007. Empirical correlations between shear wave velocity and penetration resistance for ground shaking assessments. Bulletin of Engineering Geology and the Environment, 66 (2), 203-213.
53. ULUSAY, R., TUNCAY, E., and HASANÇEBİ, N., 2007. Liquefaction assessments by filed-based methodologies for the foundation soils at a dam site in northeast Turkey. Bulletin of Engineering Geology and the Environment, 66 (3), 361-375.
54. ARIKAN, F., ULUSAY, R., and AYDIN, N., 2007. Characterization of weathered acidic volcanic rocks and a weathering classification based on a rating system. Bulletin of Engineering Geology and the Environment, 66 (4), 415-430.
55. TUNCAY, E., and ULUSAY, R., 2008. Relation between Kaiser effect levels and pre-stresses applied in the laboratory. International Journal of Rock Mechanics and Mining Sciences, 45, 524-537.
56. SÖNMEZ, B., and ULUSAY, R., 2008. Liquefaction potential at Izmit Bay - comparison of predicted and observed liquefaction during the Kocaeli earthquake. Bulletin of Engineering Geology and the Environment, 67 (1), 1-9.
57. AYDAN, Ö., ULUSAY, R., and ATAK, V.O., 2008.Evaluation of ground deformations induced by the 1999 Kocaeli earthquake of Turkey at selected sites on shorelines. Environmental Geology, 54, 165-182.
58. SÖNMEZ, B., ULUSAY, R., and SÖNMEZ, H., 2008. A study on the identification of liquefaction-induced failures on ground surface based on the data from the 1999 Kocaeli and Chi-Chi earthquakes. Engineering Geology, 97, 112-125.
59. IŞIK, N.S., DOYURAN, V., and ULUSAY, R., 2008. Assessment of deformation modulus of weak rock masses from pressuremeter tests and seismic surveys. Bulletin of Engineering Geology and the Environment, 67, 293-304.
60. IŞIK, N.S., ULUSAY, R., and DOYURAN, V., 2008. Deformation modulus of heavily jointed-sheared and blocky greywackes by pressuremeter test: Numerical, experimental and empirical assessments. Engineering Geology, 101, 269-282.
61. ERGÜLER, Z.A., and ULUSAY, R., 2009. Water-induced variations in mechanical properties of clay-bearing rocks. International Journal of Rock Mechanics and Mining Sciences, 46 (2), 355-370.
62. AVŞAR, E., ULUSAY, R., and SÖNMEZ, H., 2009. Assessments of swelling anisotropy of Ankara clay. Engineering Geology (in press, doi:10.1016/j.enggeo.2008.12.012).
63. ERGÜLER, Z. A., and ULUSAY, R., 2009. Assessment of physical disintegration characteristics of clay-bearing rocks: disintegration index test and a new durability classification chart. Engineering Geology (in press, doi:10.1016/j.enggeo.2008.12.013).
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