Simbi inorongedzerwa sesimbi yealloy, yakagadzirwa kubva kune zvimwe zvinhu zvemakemikari zvakaita sesimbi uye kabhoni. Nekuda kwekusimba kwayo kukuru uye kudhura kwayo, simbi inoshandiswa zvakanyanya nenzira dzakasiyana-siyana munguva yanhasi, senge kugadzirwa.mapaipi esimbi akaenzana, rectangular simbi mapaipi, denderedzwa simbi mapaipi, ndiro dzesimbi,zvisina kurongeka pombi fittings, structural profiles, nezvimwewo, kusanganisira kushandiswa kwesimbi mukugadzirwa kwemichina mitsva. Maindasitiri mazhinji anovimba nesimbi, kusanganisira kushandiswa kwayo mukuvaka, zvivakwa, maturusi, ngarava, mota, michina, midziyo yemagetsi, uye zvombo.
1. Simbi inowedzera zvakanyanya kana ichipisa.
Masimbi ese anokura kana apiswa, kanenge kusvika pamwero wakati. Kuenzaniswa nedzimwe simbi dzakawanda, simbi ine chikamu chakakosha chekuwedzera. Iyo yakawanda coefficient yekuwedzera kwekupisa kwesimbi ndeye (10-20) × 10-6/K, iyo yakakura iyo coefficient yezvinhu, iyo yakakura kushanduka kwayo mushure mekupisa, uye zvinopesana.
Linear coefficient yekuwedzera kwekupisa α L tsananguro:
Kurebesa kwechimwe chinhu mushure mekuwedzera tembiricha ye1 ℃
Iyo coefficient yekuwedzera kwekushisa haisi nguva dzose, asi inoshanduka zvishoma nekushisa uye inowedzera nekushisa.
Izvi zvinogona kushandiswa muminda yakawanda, kusanganisira kushandiswa kwesimbi mune yakasvibira tekinoroji. Mundima yekusimudzira tekinoroji yemagetsi egirinhi muzana ramakore re21, vaongorori nevagadziri vari kuongorora uye kufunga nezvekuwedzera kugona kwesimbi, kunyangwe tembiricha yepakati ichiwedzera kuwedzera. Eiffel Tower ndiyo yakanakisa muenzaniso wekuwedzera kwesimbi kana ichipisa. Iyo Eiffel Tower inonyatso kureba 6 inches muzhizha pane dzimwe nguva dzegore.
2. Simbi zvinoshamisa zvakatipoteredza.
Vanhu vakawanda vari kuramba vachiitira hanya kudzivirira zvakatipoteredza, uye vanhu ava vanoramba vachitsvaka nzira dzokubatsira nadzo kudzivirira uye kunyange kuvandudza nyika yakatipoteredza. Panyaya iyi, kushandiswa kwesimbi inzira yekuita zvakanaka kune zvakatipoteredza. Pakutanga kuona, ungasafunga kuti simbi yakabatana ne "kuenda girini" kana kuchengetedza zvakatipoteredza. Chokwadi ndechekuti nekuda kwekufambira mberi kwetekinoroji mukupera kwezana ramakore rechi20 ne21, simbi yave imwe yezvigadzirwa zvine hushamwari zvakatipoteredza. Kunyanya kukosha, simbi inogona kushandiswa zvakare. Kusiyana nemamwe simbi zhinji, simbi hairasikirwe chero kurasikirwa kwesimba panguva yekudzokorodza maitiro. Izvi zvinoita kuti simbi ive imwe yezvinhu zvakashandiswa zvakare pasi rose nhasi. Kufambira mberi kwetekinoroji kwaita kuti simbi yakawanda ishandiswezve gore rega rega, uye mambure anosvika kure. Nekuda kwekushanduka-shanduka, simba rinodiwa kugadzira simbi rakadzikira nekanopfuura hafu mumakore makumi matatu apfuura. Kuderedza kusvibiswa nekushandisa simba shoma kunounza zvakakosha zvakatipoteredza.
3. Simbi ndeyepasi rose.
Chaizvoizvo, simbi haingove iripo uye inoshandiswa paPasi chete, asi simbi zvakare ndiyo yechitanhatu inowanikwa zvakanyanya pasirese. Zvinhu zvitanhatu zvechadenga ihydrogen, oxygen, iron, nitrogen, carbon, uye calcium. Zvinhu zvitanhatu izvi zvine zvakakwirira muzvirimo muchadenga chose uyewo ndizvo zvinhu zvinokosha zvinoumba chadenga. Pasina izvi zvinhu zvitanhatu senheyo yechisiko chapose pose, hapangagoni kuva noupenyu, kukura kunopfuurira, kana kuvapo kusingagumi.
4. Simbi ndiyo musimboti wekufambira mberi kwehunyanzvi.
Chiitiko muChina kubva kuma1990 chakaratidza kuti kukura kwehupfumi hwenyika kunoda indasitiri yakasimba yesimbi sechinhu chinotsigira. Simbi icharamba iri iyo huru yezvimiro zvinhu muzana remakore rechi21. Kubva pamaonero emamiriro ezviwanikwa zvepasirese, kudzokorodza, kuita uye mutengo, zvinodiwa zvekusimudzira hupfumi hwenyika, uye kusimudzira kwakasimba, indasitiri yesimbi icharamba ichikura uye kufambira mberi muzana remakore rechi21.
Nguva yekutumira: Kubvumbi-21-2023
