Results 31 to 40 of about 29,269 (298)

Frost jacking characteristics of steel pipe screw piles for photovoltaic support foundations in high-latitude and low-altitude regions

open access: yesSoils and Foundations, 2023
In this study, the frost jacking characteristics of steel pipe screw piles for photovoltaic support foundations in high-latitude and low-altitude regions are studied via in situ tests and numerical simulations.
Gongliang Liu   +5 more
doaj   +1 more source

Explanation of the discrepancy between the measured and atomistically calculated yield stresses in body-centered cubic metals [PDF]

open access: yes, 2006
We propose a mesoscopic model that explains the factor of two to three discrepancy between experimentally measured yield stresses of BCC metals at low temperatures and typical Peierls stresses determined by atomistic simulations of isolated screw ...
Aono Y   +4 more
core   +3 more sources

Discrete element study of method for installation forces of screw piles in sand under different advancement ratios

open access: yesYantu gongcheng xuebao
The installation of a screw pile, as a potential offshore wind power foundation form, is the key to its successful application in offshore wind power engineering.
WANG Le 1, LI Yu 1, XU Zhijun 2, LIU Bo 3, ZHANG Chunhui 4, 5, TIAN Yinghui 6
doaj   +1 more source

Identification of residual force in static load tests on instrumented screw displacement piles

open access: yesStudia Geotechnica et Mechanica, 2021
Occurrence of the so-called residual force of an unknown value significantly disturbs interpretation of static load tests performed on piles equipped with additional measuring instruments.
Krasiński Adam, Wiszniewski Mateusz
doaj   +1 more source

Physical model tests on supporting performance of micro-pile and micro-pile with thread in natural gas pipe-landslide system in mountainous area

open access: yesZhongguo dizhi zaihai yu fangzhi xuebao, 2023
Natural gas pipeline projects in mountainous areas are inevitably affected by geological hazards such as landslides, which pose a serious threat to the safe operation of pipelines along the routes through landslide areas.
Jianzhang GAO   +6 more
doaj   +1 more source

Review of torque models for offshore helical piles [PDF]

open access: yesE3S Web of Conferences, 2020
Helical (or screw) piles, sometimes defined as anchors, are a piled system consisting of one or multiple helices welded along the shaft. Piles are installed by applying a torque to the shaft.
Spagnoli Giovanni   +1 more
doaj   +1 more source

Research on uplift mechanism of screw pile

open access: yesInternational Journal of Energy, 2023
This paper uses numerical simulation software to study the bearing characteristics of screw pile with pitch after installation. The selected soil is single layer sandy soil, and the blade is buried in deep burial mode. Based on the numerical simulation results, the vertical bearing characteristics of single spiral pile and ordinary bladeless pile are ...
Yunchen Zhang   +4 more
openaire   +1 more source

Experimental investigation on load transfer characteristics of screw groove pile-geogrid composite foundation

open access: yesYantu gongcheng xuebao
As a new type of road composite foundation, screw groove pile-geogrid composite foundation can effectively reduce foundation settlement and improve foundation bearing performance.
DENG Yousheng 1, 3, ZHAO Huiling 1, 3, LIU Junyong 2, ZHUANG Ziying 1, 3, WU Along1, 3, CHEN Zhuo1, 3
doaj   +1 more source

Interaction of screw piles with the base

open access: yesJournal of Physics: Conference Series, 2021
Abstract The article presents the results of the practical applications of screw piles foundations for block quick-assembly buildings and buildings made of a metal frame. The results of experimental and theoretical studies of foundations in various ground conditions are presented.
Alexey Glushkov   +2 more
openaire   +1 more source

Model Testing and Numerical Simulation of the Bearing Characteristics of Screw-Core Cement Mixing Pile

open access: yesBuildings
The screw-core mixing pile, which enhances traditional smooth-surface rigid piles by introducing a threaded surface, has been rapidly applied in China.
Luoan Wu   +11 more
doaj   +1 more source

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