Cov kev ntsuas ntawm granite mechanical foundation.

 

Granite, yog ib lub pob zeb igneous uas siv dav dav, nws paub zoo txog nws qhov ruaj khov thiab lub zog, ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev siv tshuab hauv ntau yam haujlwm tsim kho. Kev nkag siab txog cov txheej txheem ntawm granite mechanical foundations yog qhov tseem ceeb rau cov engineers thiab architects kom ntseeg tau tias cov qauv ruaj khov thiab kav ntev.

Ib qho ntawm cov yam ntxwv tseem ceeb ntawm granite yog nws lub zog compressive, uas feem ntau yog txij li 100 txog 300 MPa. Lub zog compressive siab no tso cai rau granite kom tiv taus cov khoom hnyav, ua rau nws tsim nyog rau cov tshuab hnyav thiab cov khoom siv. Tsis tas li ntawd, granite muaj porosity qis, feem ntau ntawm 0.1% txog 0.5%, uas ua rau nws tiv taus dej nkag thiab tshuaj lom neeg, ua rau nws tsim nyog rau cov hauv paus kho tshuab.

Lwm qhov tseem ceeb yog qhov modulus ntawm elasticity, uas rau granite yog kwv yees li 50 txog 70 GPa. Cov khoom no qhia tau tias cov khoom yuav deform ntau npaum li cas hauv qab kev ntxhov siab, muab kev nkag siab rau nws cov kev ua tau zoo hauv qab cov khoom thauj dynamic. Cov coefficient thermal expansion qis ntawm granite, nyob ib ncig ntawm 5 txog 7 x 10 ^ -6 / ° C, ua kom nws tswj tau nws cov qauv kev ncaj ncees txawm tias muaj kev hloov pauv kub, ua rau nws yog qhov kev xaiv txhim khu kev qha rau cov hauv paus hauv ntau yam huab cua.

Qhov ceev ntawm Granite, feem ntau ntawm 2.63 txog 2.75 g/cm³, kuj tseem ceeb rau kev tsim lub hauv paus. Qhov ceev ntau dua pab txhawb rau kev ruaj khov ntawm lub hauv paus, txo qhov kev pheej hmoo ntawm kev sib tsoo lossis kev hloov pauv raws sijhawm. Ntxiv mus, granite tiv taus kev puas tsuaj thiab kev hnav ua rau nws yog qhov kev xaiv zoo rau cov hauv paus uas raug kev thauj mus los ntau lossis kev ntxhov siab ntawm lub tshuab.

Xaus lus, cov txheej txheem kev siv tshuab ntawm granite mechanical foundations, suav nrog lub zog compressive, modulus ntawm elasticity, porosity qis, thiab high density, qhia txog nws qhov ua tau zoo ua cov khoom siv hauv paus. Los ntawm kev siv cov khoom no, cov engineers tuaj yeem tsim cov khoom siv tshuab ruaj khov thiab ruaj khov uas ua tau raws li qhov xav tau ntawm kev tsim kho niaj hnub.