Granite, siv dav siv pob zeb tsis zoo, muaj npe nrov rau nws cov kav ntev thiab lub zog, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev siv tshuab hauv ntau yam kev tsim kho. Kev nkag siab txog cov kev tsis sib xws ntawm granite mechanical foundations yog qhov tseem ceeb rau cov engineers thiab architects kom ntseeg tau cov qauv kev ntseeg siab thiab kev ua haujlwm ntev.
Ib qho ntawm cov txheej txheem tseem ceeb ntawm granite yog nws lub zog compressive, uas feem ntau yog li ntawm 100 txog 300 MPa. Lub zog compressive siab no tso cai rau granite kom tiv taus qhov hnyav, ua rau nws haum rau cov tshuab hnyav thiab khoom siv. Tsis tas li ntawd, granite muaj qhov porosity tsawg, feem ntau ntawm 0.1% mus rau 0.5%, uas ua rau nws tsis kam mus rau dej infiltration thiab chemical weathering, ntxiv dag zog rau nws haum rau mechanical foundations.
Lwm qhov tseem ceeb parameter yog qhov modulus ntawm elasticity, uas rau granite yog kwv yees li 50 mus rau 70 GPa. Cov cuab yeej no qhia ntau npaum li cas cov khoom yuav deform nyob rau hauv kev ntxhov siab, muab kev nkag siab rau nws cov kev ua tau zoo nyob rau hauv dynamic loads. Qhov qis thermal expansion coefficient ntawm granite, nyob ib ncig ntawm 5 mus rau 7 x 10^-6 / ° C, xyuas kom meej tias nws tswj nws cov qauv kev ncaj ncees txawm tias qhov kub thiab txias hloov, ua rau nws muaj kev xaiv txhim khu kev qha rau cov hauv paus hauv ntau qhov kev nyab xeeb.
Granite qhov ntom, feem ntau ntawm 2.63 txog 2.75 g / cm³, kuj tseem ua lub luag haujlwm tseem ceeb hauv kev tsim lub hauv paus. Qhov kev sib tw siab dua ua rau lub qhov ruaj ntseg tag nrho ntawm lub hauv paus, txo qhov kev pheej hmoo ntawm kev sib hais haum lossis hloov sijhawm. Tsis tas li ntawd, granite qhov kev tiv thaiv rau kev puas tsuaj thiab hnav ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov hauv paus uas raug rau cov tsheb loj lossis kev ntxhov siab.
Hauv kev xaus, cov kev tsis sib xws ntawm granite mechanical foundations, nrog rau lub zog compressive, modulus ntawm elasticity, tsis muaj porosity, thiab siab ceev, underscore nws cov hauj lwm zoo li cov khoom siv hauv paus. Los ntawm kev siv cov khoom no, engineers tuaj yeem tsim lub hauv paus ruaj khov thiab ruaj khov uas ua tau raws li qhov xav tau ntawm kev tsim kho niaj hnub no.
Post lub sij hawm: Nov-22-2024