Simplification of Vertical Live Loading for In-Service Bridge Pile Foundation

Development of LRFD Procedures for Bridge Pile Foundations in Iowa

Loading Simplification Rules

definition Definition. The class of all bands is defined by a class-wrapped membership rule. In[2]:= class@t_, member@x_, BANDSDD := ReleaseHold@Module@8u = Unique@D<, class@t, and@member@x, HoldPattern@SEMIGPSDD, forall@u, implies@member@u, fix@domain@xDDD, member@pair@pair@u, uD, uD, xDDDDDDD The DownValues of class need to be sorted to put this rule ahead of the default class rule. In[3]:= D...

Relevance vector machine and multivariate adaptive regression spline for modelling ultimate capacity of pile foundation

This study examines the capability of the Relevance Vector Machine (RVM) and Multivariate Adaptive Regression Spline (MARS) for prediction of ultimate capacity of driven piles and drilled shafts. RVM is a sparse method for training generalized linear models, while MARS technique is basically an adaptive piece-wise regression approach. In this paper, pile capacity prediction models are developed...

Effect of Pile Foundation on Natural Frequency of Soil Layer

Free vibration of soil often occurs during earthquakes. Since the vibration caused by earthquake does not have (steady state harmonic vibration) continuity, the alluvium vibrates with its natural frequency between two natural seismic waves. This study evaluates the effect of piles on the period of free vibration of a soil layer using numerical method. In the first stage, using analytical equati...

Harmonic Response of Pile Groups to Dynamic Loading

A completely general method of analysis for three-dimensional raked piles under harmonic excitation is discussed. The piles have been represented by a three-dimensional frame structure and the soil has been represented by a boundary element discretization scheme. A computer program has been written which carries out this analysis and produces a group stiffness matrix that can be included as a f...