Tapered-Prismatic Pile: Driving Energy Consumption and Bearing Capacity

Abstract

E d i t o r i n c h i e f ZHURINOV MuratZhurinovich, doctor of chemistry, professor, academician of NAS RK, president of the National Academy of Sciences of the Republic of Kazakhstan, general director of JSC "Institute of fuel, catalysis and electrochemistry named after D.V. Sokolsky» (Almaty, Kazakhstan) H = 4 E d i t o r i a l b o a r d: ABSAMETOV Malis Kudysovich, (deputy editor-in-chief), doctor of geological and mineralogical sciences, professor, academician of NAS RK, director of the Akhmedsafin Institute of hydrogeology and hydrophysics (Almaty, Kazakhstan) H = 2 ZHOLTAEV Geroy Zholtaevich, (deputy editor-in-chief), doctor of geological and mineralogical sciences, professor, director of the institute of geological sciences named after K.I. Satpayev (Almaty, Kazakhstan) Н=2 SNOW Daniel, Ph.D, associate professor, director of the labotatory of water sciences, Nebraska University (Nebraska, USA) H = 32 Zeltman Reymar, Ph.D, head of research department in petrology and mineral deposits in the Earth sciences section of the museum of natural history (London, England) H = 37 PANFILOV Mikhail Borisovich, doctor of technical sciences, professor at the Nancy University (Nancy, France) Н=15 SHEN Ping, Ph.D, deputy director of the Committee for Mining geology of the China geological Society, Fellow of the American association of economic geologists (Beijing, China) H = 25 FISCHER Axel, Ph.D, associate professor, Dresden University of technology (Dresden, Germany) H = 6 KONTOROVICH Aleksey Emilievich, doctor of geological and mineralogical sciences, professor, academician of RAS, Trofimuk Institute of petroleum geology and geophysics SB RAS (Novosibirsk, Russia) H = 19 ABSADYKOV Bakhyt Narikbaevich, doctor of technical sciences, professor, corresponding member of NAS RK, Bekturov Institute of chemical sciences (Almaty, Kazakhstan) H = 5 AGABEKOV Vladimir Enokovich, doctor of chemistry, academician of NAS of Belarus, honorary director of the Institute of chemistry of new materials (Minsk, Belarus) H = 13 KATALIN Stephan, Ph.D, associate professor, Technical university (Dresden, Berlin) H = 20 SEITMURATOVA Eleonora Yusupovna, doctor of geological and mineralogical sciences, professor, corresponding member of NAS RK, head of the laboratory of the Institute of geological sciences named after K.I. Satpayev (Almaty, Kazakhstan) Н=11 SAGINTAYEV Zhanay, Ph.D, associate professor, Nazarbayev University (Nursultan, Kazakhstan) H = 11 FRATTINI Paolo, Ph.D, associate professor, university of Milano-Bicocca (Milan, Italy) H = 28 News of the National Academy of Sciences of the Republic of Kazakhstan. Series of geology and technology sciences.

Strength Properties of Various Types of Fiber-Reinforced Concrete for Production of Driven Piles

“…Therefore, increasing the percentage of reinforcement by 2 and 4 times leads to an enhancement of steel fiber concrete strength by 11.3 and 37.5%, respectively. The dynamics of changes in the strength of steel fiber concrete with an increase in the percentage of reinforcement slightly differ from the results of studies presented in [28]. In that study, the increase in the strength of steel fiber concrete is observed when changing the percentage of reinforcement from 0.5 to 1.5%, while in our studies this occurred when changing the percentage of reinforcement from 0.5 to 2.0%, which indirectly confirms the research results in [21].…”

“…The sum of potential energy of blows for the average length of cracks formed on the faces of the sample during testing [14]. -Specific impact toughness, taken as the ratio of the total potential energy spent on the fracture of the sample to its volume [28].…”

“…The static and impact resistance of fiber concrete made of steel and synthetic fibers for making prismatic piles up to 12 m long was studied in [28]. The maximum indicators of static strength and impact endurance for steel fiber concrete are characteristic at a reinforcement percentage of 1.5, and those for fiber concrete from synthetic fibers are characteristic at a reinforcement percentage of 1.0.…”

“…Therefore, the results of the research indicate that, when applied to driven piles, experts have mainly studied the properties of fiber concrete, in which steel fibers of different shapes, sizes and contents were used. Studies of fiber concrete made of synthetic fibers [28] are somewhat limited; that is why a detailed and unambiguous comparison of different types of synthetic fibers according to the static and impact strength of fiber concrete at different stages of deformation is not possible. The relevance of such a comparative assessment is that it would allow for a differentiated assignment of the type of fiber concrete according to the stress-strain state of piles during driving.…”

The Influence of Backfill on the Driving Energy Intensity and Axial Load Resistance of Piles with Shaft Widenings: Modeling Research

“…This observation underscores the pivotal role of the widening sections in determining the load-bearing capacity of piles. Further research [8][9][10][11] indicates a 35-45% increase in the static load resistance of widened piles compared to their non-widened counterparts. In some numerical studies [12], this beneficial effect has been shown to reach as high as 68%.…”