ANALYSIS OF LATERALLY LOADED DRILLED SHAFTS IN ROCK

 
 
 
 

ANALYSIS OF LATERALLY LOADED DRILLED SHAFTS IN ROCK

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dc.contributor.advisor Liang, Robert en_US
dc.contributor.author Yang, Ke en_US
dc.date.accessioned 2008-07-07T02:17:31Z
dc.date.available 2008-07-07T02:17:31Z
dc.date.created 2006 en_US
dc.date.issued 2008-07-07T02:17:31Z
dc.identifier.uri http://rave.ohiolink.edu/etdc/view?acc_num=akron1133907777 en_US
dc.identifier.uri http://hdl.handle.net/2374.OX/3690
dc.description Drilled shafts socketed into rock are widely used as foundations for bridges and other important structures. Rock-socketed drilled shafts are also used to stabilize a landslide. The main loads applied on the drilled shafts are axial compressive or uplift loads as well as lateral loads with accompanying moments. Although there exist several analysis and design methods especially for rock-socketed drilled shafts under lateral loading, these methods were developed with assumptions without actual validations with field load test results. Some of the methods have been found to provide unsafe designs when compared to recently available field test data. Therefore, there is a need to develop a more rational design approach for laterally loaded drilled shafts socketed in rock. A hyperbolic non-linear p-y criterion for rock is developed in this study that can be used in conjunction with existing computer programs, such as COM624P, LPILE, and FBPIER, to predict the deflection, moment, and shear responses of a shaft under the applied lateral loads. Considerations for the effects of joints and discontinuities on the rock mass modulus and strength are included in the p-y criterion. Evaluations based on comparisons between the predicted and measured responses of full-scale lateral load tests on fully instrumented drilled shafts have shown the applicability of the proposed p-y criterion and the associated methods for determining the required input of rock parameters. In addition to the development of a hyperbolic p-y criterion for rock, a method for predicting lateral capacities of drilled shafts in rock and/or soils is developed for assessing the safety margin of the designed shafts against the design loads. A computer program LCPILE is developed using VC++ to facilitate computations. An elastic solution based on a variational approach is also developed for determining drilled shaft elastic deflection due to applied lateral loads in a two-layer soil layer system. The computational algorithm was coded in a Mathematica file for easy application. Finally, Briaud’s method for deriving p-y curves of rock from pressuremeter or dilatometer test results is evaluated using available field test data. A modification to the Briaud’s method is recommended for applications in rocks. en_US
dc.format application/pdf en_US
dc.format 291p. en_US
dc.rights unrestricted en_US
dc.rights Copyright and permissions information available at the source archive en_US
dc.subject Lateral en_US
dc.subject Drilled Shaft en_US
dc.subject Rock en_US
dc.subject Lateral Capacity en_US
dc.subject p-y curve en_US
dc.subject Load Test en_US
dc.subject Pressuremeter en_US
dc.subject Dilatometer en_US
dc.subject Elastic Solution en_US
dc.subject FEM en_US
dc.subject en_US
dc.title ANALYSIS OF LATERALLY LOADED DRILLED SHAFTS IN ROCK en_US
dc.type Electronic Thesis or Dissertation en_US
dc.degree.name PhD en_US
dc.degree.level doctoral en_US
dc.degree.discipline Civil Engineering en_US
dc.degree.grantor University of Akron en_US
dc.contributor.publisher University of Akron / OhioLINK en_US

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