Allpile is a windowsbased analysis program that handles virtually all types of piles, including steel pipes, hpiles, precast concrete piles, augercast piles, drilled shafts, timber piles, jetted piles, tapered piles. Soilstructure drilled pier software performs all of the above three calculations. Design and construction of drilled piers reported by aci committee 336. Since concrete strength is related to wave speed, this analysis is useful in cases where chaw analysis reveals a defect but does not give a precise idea of its. The various software suites for concrete drilled shaft foundation designs utilized in the electric transmission line utility industry make different modeling. In this paper, the tz methodology is utilized to develop probabilistic approaches for axial service limit state analysis of drilled shafts. Consider both skin friction and point bearing in drilled shaft design. Criteria for the design of axially loaded drilled shafts. They can range from 2 to 30 feet in diameter and can be over 300 feet in length. Drilled pier bored pile software soilstructure software. Design of drilled shafts to enhance slope stability was also conducted by pradel et al. Shaft 123 is a macrodriven excel spreadsheet which utilizes vba programming for calculating ungrouted and grouted drilled shaft capacities. Shaft 12 3 was developed in conjunction with a florida department of transportation.
A basic formula for the computation of the capacity of a drilled shaft. Calculate total allowable skin friction by multiplying the perimeter of the shaft. A program for the elastic analysis for distribution of vertical load and settlement of piles in a group grlweap a program for the dynamic analysis of driven piles software from globe rausche likinns. Download geotechnical engineering software shaft 2017 developed by ensoft. Handbook on design and construction of drilled shafts under lateral load 1984. Fpasc160 design procedure for drilled concrete piers in expansive soil. Shaft is a specialpurpose program based on rational procedures for analyzing a drilled shaft under axial loading. Since concrete strength is related to wave speed, this analysis is useful in cases where chaw analysis. Establish minimum diameter and depth for lateral loads 11. Shallow footing shallow footing under vertical, and lateral loads moment and shear analysis includes settlement, rotation, and sliding.
Drilled shafts can be installed relatively quickly with less noise and vibration than pile foundations, which often is an important consideration for urban sites or sites adjacent to buildings or sensitive structures. Analysis of drilledshaft foundations for overheadsign. Software by bridge software institute fbdeep is a static axial capacity program used for drilled shafts and driven piles. The drilled shaft methodology is based upon federal highway administration. Geotechnical engineering research laboratory university of massachusetts lowell usa. Drilled shafts are deep, cylindrical, castinplace concrete foundations poured in and formed by a bored i.
Group v2019 a software for the analysis of a group of piles subjected to vertical and lateral loading. Example 10 sign structure foundation design example statement. Leveraging the py and tz methods for computing the nonlinear response of pile groups with vertical and battered piles in multilayered nonlinear soils. The drilled shaft methodology is based upon federal highway administration reports. Signs conventional methodology is also acceptable, such as broms method, etc.
Deep foundation analysis for drilled shaft foundations cidh. The electrical power research institute epri has sponsored development of design methods for transmission line structures, predominately drilled shafts. Plan note drilled shafts for slope stabilization appendix 2. Computes deflection, shear, bending moment, and soil response with respect to depth in nonlinear soils. Lpile analysis of piles and drilled shafts under lateral. Nysdot geotechnical page 111 february 29, 2016 design manual geotechnical design manual chapter 11 foundation design. Evaluation and guidance development for postgrouted drilled shafts for highways 2017. A program for the study of drilled shafts under axial loads.
Minimum embedment depth for drilled shafts geotechgal geotechnical. Drilled pier analysis bored pile o r g a n iz a io n case study p499. Drilled shafts, also referred to as drilled piers, caissons or bored piles, are deep foundation solutions used to support structures with large axial and lateral loads by excavating cylindrical shafts into the. Different analysis for shaft subject to lateral load bridges require soilpile interaction analysis utilizing lpile, fb multipier, etc. Allpile is a windowsbased analysis program that handles virtually all types of piles, including steel pipes, hpiles. Allpile is a windowsbased analysis program that handles virtually all types of piles, including steel pipes, hpiles, precast concrete piles, augercast piles, drilled shafts, timber piles, jetted piles, tapered piles, piers with bell, micropiles minipiles, uplift anchors, uplift plate, and shallow foundations. Rocksocketed drilled shafts are also used to stabilize a landslide. Program considerations for analysis of drilled shaft. Shaft study of drilled shafts under axial loading software. Drilled shafts in rock are widely used as foundations of heavy structures such as highway bridges and tall buildings. Structures design office programs library files and links. Analysis of laterally loaded drilled shafts in rock yang ke, university of akron may 2006 drilled shafts socketed into rock are widely used as foundations for bridges and other important structures.
Select drilled shaft foundations for further evaluation 8. Design of drilled shafts in expansive soils robert l. Analysis of piles and drilled shafts under lateral loads. Minimum embedment depth for drilled shafts foundation. Downdrag load negative skin friction the site soils are often stratified, so drilled pier software can handle up to 20 soil layers, 250 ft embedment 75 m and maximum of 12 ft diameter pier 4 m. The cantilever supports a sign panel attached to the horizontal support. Probabilistic analysis of drilled shaft service limit. Only the term drilled pier will be used in this report. The program calculates the capacity of a single drilled pier foundation bored pile subjected to. Lpile analysis of piles and drilled shafts under lateral loads. Applied foundation testing provides the full range of expert dynamic testing and analysis services. Example 10 demonstrates a design procedure for a drilled shaft foundation for a cantilever sign structure.
It includes different analysis methods for sand, clay, silt, and limestone. The approach used the program flac and the strength reduction method to predict the safety factor of. Shaft analysis can handle large size drilled shaft with or without belled bottom. Construction procedures and lrfd design methods, fhwanhi, 2010. Practices for design of bored piles drilled shafts. State of practice summary of the design approaches. Foundations september 2008 174 structural adequacy of the columns and foundations. The current lrfd methodologies of drilled shaft design would be more efficient if reliability based design approaches were used for service limit state design. The program computes settlement of the top and base of the shaft as a function of axial loading, along with the distribution of axial load along the length of the shaft. Major factors favoring selectionuse of drilled shafts. Structural design and construction of drilled pier foun.
Pdf design of drilled shafts to enhance slope stability. Shaft is a computer program used to evaluate the axial capacity and the shortterm, loadsettlement curves of drilled shafts or bored piles in various types of soils. A minimum 3 inch cover is recommended for drilled pier shafts. It includes different analysis methods for sand, clay. Although much has been learned about the analysis and design of drilled shafts in rock, all. Drilled pier is a complete analysis and design software for drilled shaft foundations. For additional information on crosshole sonic logging csl. Cidh stands for cast in drilled hole, commonly called piles, and testing is often required to ensure good concrete. The method is based on construction procedures and design method. The characteristic load method clm of analysis of laterally loaded piles duncan et al. Download geotechnical engineering software lpile 2019 developed by ensoft. A set of computer software tools with the acronym fad foundation analysis.
Allpile from civiltech software is a windowsbased analysis program that handles virtually all types of piles, including steel pipes, hpiles, precast concrete piles, augercast piles, drilled shafts, timber piles. Aashto methodologies for drilled shafts supporting bridges. The software analyzes wave speeds derived from arrival time data from the scans of all pairs of tubes to yield a wave speed map of the entire shaft volume. The lateral soilstructure interaction analysis is also used to select the appropriate method pointoffixity, stiffness matrix, linear stiffness springs or py nonlinear springs to model the bridge foundation in the structural design software. Hfwa shaft analysis using fhwaif99 method for drilled shaft with bell or without bell, including settlement, top rotation, and slope analysis. The settlement of a drilled shaft under a given load will also depend on the soil profile and on the geometry of the shaft. Shaft is a computer program used to evaluate the axial capacity and the short term, loadsettlement curves of drilled shafts or bored piles in various types of. Aft engineers have been involved in dynamic testing for nearly twenty years and have performed. I am not aware of a free software program to design drilled shafts, but the design methods can be put into a spreadsheet without too much difficulty. Fbmultipier is a nonlinear finite element analysis program for analyzing bridge pier structures and is supported and available from the university of florida bridge software institute.
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