Zviyero zvehunyanzvi zvegranite mechanical foundation。

 

Granite, dombo rinoshandiswa zvakanyanya, rinozivikanwa nekugara kwenguva refu uye kusimba kwaro, zvichiita kuti rive chinhu chakakodzera pakugadzira nheyo dzemakanika mumapurojekiti akasiyana-siyana ekuvaka. Kunzwisisa hunyanzvi hwemagadziko emakanika egranite kwakakosha kune mainjiniya nevagadziri vezvivakwa kuti vave nechokwadi chekuti chivakwa chacho chakasimba uye chinogara kwenguva refu.

Chimwe chezvinhu zvikuru zve granite isimba rayo rekudzvanya, iro rinowanzova pakati pe100 kusvika 300 MPa. Simba iri rekudzvanya rinobvumira granite kutsungirira mitoro yakakura, zvichiita kuti ikodzere michina inorema nemidziyo. Pamusoro pezvo, granite ine maburi mashoma, kazhinji ari pakati pe0.1% kusvika 0.5%, izvo zvinoita kuti isapindirwe nemvura uye makemikari, zvichiwedzera kukodzera kwayo nheyo dzemakanika.

Chimwe chinhu chakakosha imodulus yekusimba, iyo yegranite inenge 50 kusvika 70 GPa. Hunhu uhwu hunoratidza kuti zvinhu zvichashanduka sei kana zvamanikidzwa, zvichipa ruzivo rwekushanda kwayo kana yaiswa mumitoro inochinja-chinja. Iyo granite ine thermal expansion coefficient yakaderera, inenge 5 kusvika 7 x 10^-6 /°C, inoita kuti irambe yakasimba kunyangwe paine kuchinja kwekushisa, zvichiita kuti ive sarudzo yakavimbika yenheyo munzvimbo dzakasiyana siyana.

Kuwanda kwegranite, kunowanzova pakati pe2.63 kusvika 2.75 g/cm³, kunoitawo basa guru mukugadzira nheyo. Kuwanda kwegranite kunobatsira kuti nheyo igare zvakanaka, zvichideredza njodzi yekugadzikana kana kuchinja nekufamba kwenguva. Uyezve, kuramba kwegranite pakukweshwa nekusakara kunoita kuti ive sarudzo yakanaka kune nheyo dzinoshandiswa zvakanyanya kana kuti dzine simba remagetsi.

Mukupedzisa, zviyero zvehunyanzvi zvegranite mechanical foundations, zvinosanganisira simba rekumanikidza, modulus of elasticity, low porosity, uye high density, zvinosimbisa kushanda kwayo sehwaro hwezvinhu. Nekushandisa hunhu uhwu, mainjiniya vanogona kugadzira hwaro hwema mechanical hwakasimba uye hunogara kwenguva refu hunoenderana nezvinodiwa zvekuvaka kwemazuva ano.