20.500.12556/DKUM-72667 Modified coefficient of subgrade reaction to laterally loaded piles Modificiran modul reakcije tal za bočno obtežene pilote An accurate prediction of the load capacity of a laterally loaded pile at a permissible displacement is an important concern at the design stage. In contrast to many sophisticated methods, Broms’ method based on moment equilibrium has been preferred by engineers to predict the load capacities of laterally loaded piles due to both its simplicity and because it is established on a way of hand calculation. However, Broms’ method typically overestimates a pile’s lateral load capacity as it requires a constant coefficient of horizontal subgrade reaction (nh) into analyses, regardless of the magnitude of the pile’s top displacement. In this study, modified coefficients of subgrade reactions(nh*) that are sensitive to the pile’s top displacement in cohesionless soils are first proposed to improve the performance level of Broms’ method for the prediction of the load capacity of a laterally loaded pile as the pile’s top displacement increases. The modified values of nh* are calibrated using 45 independently free-head, single-driven, full-scale pile tests from 23 sites in cohesionless soils. It is demonstrated that Broms’ method with nh* would correctly estimate a pile’s lateral load-deflection behavior with accuracy levels similar to more complicated methods. Natančna napoved nosilnosti bočno obteženega pilota pri dovoljenem pomiku je pomembna v fazi načrtovanja. V nasprotju s številnimi sofisticiranimi metodami so inženirji največkrat napovedovali nosilnost bočno obteženih pilotov z Bromsovo metodo, ki temelji na ravnotežju momentov, zaradi svoje preprostosti in ker se izračun praktično izvede “na roke”. Vendar pa Bromsova metoda običajno precenjuje bočno obremenitev pilota, ker se v analizah upošteva konstanten horizontalni modul reakcije tal (nh), ne glede na velikost premika pilota na vrhu. V študiji so najprej predstavljeni modificirani moduli reakcije tal (nh*) za nekohezivne zemljine, ki izboljšajo učinkovitost Bromsove metode za napoved nosilnosti bočno obteženih pilotov z naraščanjem premika pilota na vrhu. Modificirane vrednosti nh* so bile kalibrirane z uporabo rezultatov 45 samostojnih preizkusov pilotov s 23 gradbišč v nekohezivnih tleh, s prosto glavo pilota in posamično zabitih. Pokazano je, da Bromsova metoda z nh* pravilno oceni obnašanje bočno obteženega pilota s podobno natačnostjo kot jo dosežemo pri bolj zapletenih metodah. Broms' method coefficient of horizontal subgrade reaction p-y curves strain wedge model Bromsova metoda horizontalni modul reakcije tal p-y krivulje model deformacijskega klina true false true Angleški jezik Slovenski jezik Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru Znanstveno delo 2018-10-11 12:39:06 2018-10-11 12:41:24 2023-07-31 12:27:27 2019-07-11 19:26:36 2018 0 0 str. 77-85 št. 1 Letn. 15 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1854-0171 215987712 305189376 10.18690/actageotechslov.15.1.77-85.2018 1854-0171 URN:SI:UM:DK:J24VNA0W Acta_geotechnica_slovenica_2018_Gurbuz_Modified_coefficient_of_subgrade_reaction_to_laterally_loaded_piles_unlocked.pdf Acta_geotechnica_slovenica_2018_Gurbuz_Modified_coefficient_of_subgrade_reaction_to_laterally_loaded_piles_unlocked.pdf 1 593F9E4955D3C42E535EDBC1FC3B221C 2b1bb5a4393446a1a34113c2d552f796eda4ac99d46c9250e58d7aadce16c972 788f396b-7c10-11eb-bb7a-00155d0001ca 20.500.12556/dkum/d4ae482d-09a6-4a84-bb9a-a363d369643b https://dk.um.si/Dokument.php?lang=slv&id=131025 http://fgserver6.fg.um.si/journal-ags/2018-1/article-6.asp 1 https://dk.um.si/Dokument.php?lang=slv&id=131024 Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Acta geotechnica Slovenica 0 0 0