Evaluating CPT and CPTu based pile bearing capacity estimation.pdfVIP

Scientia Iranica A (2011) 18 (5), 1009–1019 Sharif University of Technology Scientia Iranica Transactions A: Civil Engineering Evaluating CPT and CPTu based pile bearing capacity estimation methods using Urmiyeh Lake Causeway piling records A. Eslami a , E. Aflaki a,∗, B. Hosseini b a Department of Civil Engineering, Amir Kabir University, Tehran, P.O. Box 15875-4413, Iran b Department of Geotechnics Civil Engineering, Islamic Azad University-Sofian Branch, Iran Received 23 May 2010; revised 1 June 2011; accepted 21 August 2011 KEYWORDS Abstract Urmiyeh Lake is the largest super salt water situated in the north-west of Iran. A causeway Pile bearing capacity; embankment has been constructed in the narrowest part of the lake from both sides about 13.5 km, in CPT and CPTu methods; order to connect two provincial capital cities of Tabriz and Urmiyeh of eastern and western Azerbaijan Dynamic testing; provinces to Europe through Turkey, while a 1280 m opening in between linked up by a bridge. Based on Urmiyeh Lake Causeway. soil classification methods, utilizing CPTu data and soil sampling, the lake sediments consist of 150 m of soft and very sensitive clay. In order to evaluate the bearing capacity of driven piles of the bridge, eight long steel piles with diameters of 813 and 66 m and lengths of 75 m have been instrumented and monitored based on static and dynamic load testing program. Piezocone (CPTu)