LATERAL CONFINEMENT IN SUBGRADE UNDER VERTICAL LOADS AND ITS SIGNIFICANCE IN DESIGN

Abstract

Tho onporimontol otudy roportod hoiro two boon doDinoi to dotino and ovoluoto tho wolo of lotoral con.• tinomont in tho boorina capacity of tho oubvado condor vortIool %omit,* Tho mothod of approach omployod conoioto In otiodylno tho influonco of lama confinotient on tho modulus of olastiotty, 73 of throo typo° of °olio widow condition° or modified Immo cOmpactios* Tho infOrmation io 01,10104 in tho ttonooa cothod of floaiblo pore-Joint dooian to dotormino tho offset of latosol oonfinonont on dooinn thichn00000 or flosiblo pout. Undwoinod trioalal toot two boon u od to dotormino tho It of soil*. Suttoblo voluos of latora floW prossum oloulativo of Oho If:sterol otrosotto dovolopincy in ?told ore opplipd in tho trisaial (toll* Th000 voluoo of lotorol ptonsuusoo 'metro dotorminod by On onpotimontol procoduvo ouclootod in tho pr000nt study. Maw= doolan motbod moftoo uoo of 20 poi lotoral proosovo in Ow trisaiol toot irrospootivo of coil typos Tho roouito of tho pr000nt study Indionto thot roollotin volno of lotorol pin:moor° to ha uood in triaalol toot vowlos *von' a rolotivoly wido room) dopondtoa on °oil typos, Consoopontly tho voluo of Z and tho vooultaut dooian thicft* n000 of povomont 6;0 conoidorobly offootoda It hes beamsinterred ai s that the use► of 20 psi IaterW pressure is realistic only in case of soils having California Deering Ratio around 2 percent or Group lodes round 700 other soils require lateral pressures varying directly as California Bearing Ratio and inversely as GoI, eased on these results a method of correcting the design thiokness obtained by the Kansas design method is developed, 06,1014