The current engineering practice adopts the concept of beam on a nonlinear Winkler foundation (BNWF) in order to perform displacement-based analysis on piles, cantilever walls, and bulkhead systems. This post provides an OpenSees TCL file to develop the BNWF model of a beam supported on a series of nonlinear springs. Similar to other OpenSees TCL… Read More
This Tcl code creates full-scale three-dimensional continuum model of single pile embedded in a layered soil profile. Soil-pile interaction including formation of gap and slippage was simulated by using the BeamContact3D element. The program is capable of performing a lateral pushover analysis on a single pile. The contact elements at the interface of soil and pile… Read More
OpenSees implementation of a single ground improvement (GI) element in a continuum soil domain is described here. The Unit Cell concept is adopted to develop the ground improvement layout. The unit cell consists of a single GI element located in the center of its equivalent influence zone. The model represents a GI element located on… Read More
This Tcl code creates full-scale three-dimensional continuum model of Meloland Road Overpass (MRO) located in El-Centro, California. The code is generic and can be modified to simulate any two-span bridge with a structure similar to MRO. Ground motion can be applied at the model base in two horizontal directions. Please read the article about base… Read More
OpenSees implementation of a single pile embedded in a continuum soil domain is described here. The codes are generic and can be modified for various soil domain dimensions, pile depth and soil layers. The file is capable of analyzing seismic response of a single pile system both in dry and saturated soils where liquefaction can… Read More
The Tcl files below perform site response analysis for level ground condition by applying ground motion to a stack of three-dimensional nonlinear soil elements (see Figure 1). I have uploaded two separate codes for dry soil and saturated soil conditions. The code for latter is capable of simulating liquefaction. Please also read the article about base… Read More