Results 21 to 30 of about 169,357 (237)

Analysis of the Installation Effect on the Axial Performance of Pressure-Grouted Helical Piles in Clay by Small-Scale Model Tests

open access: yesBuildings, 2022
A pressure-grouted helical pile (PGHP) is a stiffened helical pile installed by using the simultaneous drilling and grouting technique. The formation of the soil-cement column surrounded by the helical pile is influenced by the multiple installation ...
Xiaoxuan Zhuang   +3 more
doaj   +1 more source

Optimization of inter-helix spacing for helical piles in sand

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2022
The optimization of the inter-helix spacing is a key issue of the axial bearing capacity of helical piles. In this paper, based on the cavity expansion, an analytical approach considering the small-strain stiffness, strength, compressibility and stress ...
Kang Shao   +5 more
doaj   +1 more source

Numerical Modelling of Axially Loaded Helical Piles: Compressive Resistance [PDF]

open access: yesE3S Web of Conferences, 2021
Helical piles are foundation systems used to support compression, tension, and lateral loads. However, this type of piles was used around the world for more than 25 years. Its behavior, especially in Iraq, is still unknown and scare. The present study is
Ali Ahmed. S.   +2 more
doaj   +1 more source

The Performance of Helical Pile under Cyclic Load Using 3D-Finite Element Analysis [PDF]

open access: yesEngineering and Technology Journal, 2022
Helical piles are a kind of foundation that can withstand compression, tension, and lateral stresses. However, this kind of pile was utilized extensively globally for almost 25 years. Its behavior, particularly in Iraq, is uncertain and frightening.
Ahmed Ali, Nahla Salim, Husam Baqir
doaj   +1 more source

The thermal behaviour of three different auger pressure grouted piles used as heat exchangers [PDF]

open access: yes, 2014
Three auger pressure grouted (APG) test piles were constructed at a site in Richmond, Texas. The piles were each equipped with two U-loops of heat transfer pipes so that they could function as pile heat exchangers.
Brettmann, T   +11 more
core   +1 more source

Performance assessment of single and group of helical piles embedded in expansive soil

open access: yesInternational Journal of Geo-Engineering, 2017
The present work deals with helical piles that extensively used in foundations for structures subjected to both compressive and tensile forces. The behavior of square helical piles models (5 × 5) mm, embedded in expansive soil overlaying a layer of well ...
Bushra S. Albusoda, Hassan O. Abbase
doaj   +1 more source

Use of Pile Driving Analysis for Assessment of Axial Load Capacity of Piles [PDF]

open access: yes, 2012
Driven piles are commonly used in foundation engineering. Pile driving formulae, which directly relate the pile set per blow to the capacity of the pile, are commonly used to decide whether an installed pile will have the designed capacity.
Salgado, Rodrigo, Zhang, Yanbei
core   +1 more source

Temperature response functions (G-functions) for single pile heat exchangers [PDF]

open access: yes, 2013
Foundation piles used as heat exchangers as part of a ground energy system have the potential to reduce energy use and carbon dioxide emissions from new buildings. However, current design approaches for pile heat exchangers are based on methods developed
Loveridge, F.A.   +3 more
core   +1 more source

Laboratory and field study of the performance of helical piles in sandy soil [PDF]

open access: yesJournal of Structural and Construction Engineering, 2016
Developing different method in construction of deep footing plays a major role in optimized and economized performing of civil projects especially in problematic soils.
Farhad Nabizadeh, Asskar Janalizadeh
doaj   +1 more source

G-Functions for multiple interacting pile heat exchangers [PDF]

open access: yes, 2014
Pile heat exchangers – where heat transfer pipes are cast into the building piled foundations – offer an opportunity to use ground energy systems without the additional construction costs related to the provision of special purpose heat exchangers ...
Loveridge, F.A.   +3 more
core   +1 more source

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