Mirwi yesimbi, sechinhu chekutsigira chechimiro chinosanganisa simba uye kuchinjika, inoita basa risingadzokerike mumapurojekiti ekuchengetedza mvura, kuvaka kwakadzika nheyo yekuchera, kuvaka chiteshi, uye mamwe minda. Mhando dzadzo dzakasiyana-siyana, maitiro ekugadzira akaomesesa, uye kushandiswa kwakawanda kwepasirese kunoita kuti zvive chinhu chakakosha chekuona kuchengeteka nekuvandudza kushanda zvakanaka mukuvaka. Ichi chinyorwa chinopa ongororo yakadzama yemhando dzepakati dzemarata emapepa, misiyano, nzira dzekugadzira dzemazuva ese, uye saizi yakajairwa uye zvakatemwa, zvichipa ratidziro yakazara yevashandi vekuvaka nevatengi.
Simbi mapepa mirwizvakakamurwa ne-cross-sectional shape. Z- uye U-mhando yesimbi mapepa mirwi ndiyo yakasarudzika sarudzo muinjiniya nekuda kwehupamhi hwemashandisirwo ekushandisa uye nekuita kwakanaka kwakanakira. Nekudaro, pane misiyano yakakura pakati pemhando mbiri idzi maererano nechimiro, kuita, uye mamiriro ekushandisa:
Mirwi yesimbi yakagadzirwa neU: Iwo anoratidzira yakavhurika chiteshi-sechimiro chine kukiya micheto yeyakasimba inokwana, ichivabvumira kuchinjika kuchinjika kune hombe deformation zvinodiwa mumapurojekiti einjiniya. Yavo yakanakisa flexural zvimiro inoita kuti ishandiswe zvakanyanya mumapurojekiti emvura yakakwira-yemvura (senge manejimendi erwizi uye reservoir embankment reinforcement) uye yakadzika nheyo gomba tsigiro (sekuvaka kwepasi pevhu kwezvivakwa zvepamusoro-soro). Parizvino ndiyo inonyanya kushandiswa mhando yesimbi simbi murwi pamusika.
Mirwi yesimbi yakaita seZ: Vanosanganisira yakavharwa, zigzag-cross-section ine thicker steel plates kumativi ose maviri, zvichiita kuti pave nepamusoro chikamu modulus uye yakakwirira flexural stiffness. Izvi zvinobvumira kunyatso kudzora kweinjiniya deformation uye inokodzera mapurojekiti ekupedzisira ane stringent deformation control zvinodiwa (senge precision fekitori hwaro makomba uye hombe bhiriji kuvaka). Nekudaro, nekuda kwekuoma kwehunyanzvi hwekutenderera kweasymmetric rolling, makambani mana chete pasi rese ane huwandu hwekugadzira, zvichiita kuti iyi mhando yemurwi wepepa ive shoma.
Iyo nzira yekugadzira yesimbi mapepa mirwi inokanganisa zvakananga kuita kwavo uye inoshanda maapplication. Parizvino, kupisa kutenderedza uye kutonhora kupeta ndidzo nzira mbiri huru dzinoshandiswa muindasitiri, imwe neimwe iine yayo yakasarudzika yekutarisa mukugadzira maitiro, hunhu hwechigadzirwa, uye chinzvimbo chekushandisa:
Kupisa-yakaputirwa simbi mapepa mirwianogadzirwa kubva kusimbi mabheti, anopisa kusvika kune yakanyanya tembiricha, uye obva akungurutswa kuita chimiro uchishandisa yakasarudzika michina. Chigadzirwa chakapedzwa chinopa yakakwira kukiya kurongeka uye yakakwira simba rose, zvichiita kuti ive inotungamira chigadzirwa mumapurojekiti einjiniya. Royal Steel Boka rinoshandisa tandem semi-inoenderera mberi yekutenderedza maitiro kupa U-yakaita mirwi ine hupamhi hwe400-900mm uye Z-yakaita mirwi ine hupamhi hwe500-850mm. Zvigadzirwa zvavo zvakaita zvakanaka paShenzhen-Zhongshan Tunnel, zvichivawanira mukurumbira we "kudzikamisa mirwi" kubva kumuridzi wepurojekiti, achiratidza zvizere kuvimbika kwekutenderera kunopisa.
Cold-formed steel sheet pillsanoumbwa-akaumbwa pakamuri tembiricha, achibvisa kudiwa kwepamusoro-tembiricha kurapwa. Izvi zvinoita kuti pave nekugadzikana kwepamusoro uye 30% -50% zvirinani kusagadzika kwecorrosion pane kupisa-yakakungurutswa mirwi. Iwo akakodzera kushandiswa munzvimbo dzine hunyoro, dzemahombekombe, uye dzinoita ngura (semuenzaniso, kuvakwa kwegomba rekutanga). Nekudaro, nekuda kwekugumira kwekamuri-tembiricha yekugadzira maitiro, yavo yepakati-chikamu kuomarara haina kusimba. Iwo anonyanya kushandiswa sechinhu chekuwedzera, pamwe chete neanopisa-akatenderedzwa mirwi kuti awedzere mutengo weprojekiti uye kuita.
Mhando dzakasiyana dzesimbi pepa mirwi dzine zvakajeka dimensional zviyero. Kutenga kweprojekiti kunofanirwa kufunga nezvezvinodiwa (sekudzika kwekuchera uye kusimba kwemutoro) kuti usarudze zvakatemwa. Izvi zvinotevera zviyero zvakajairwa zvemhando mbiri dzemhando dzesimbi dzesimbi:
Mirwi yesimbi yakaumbwa neU: Iyo yakajairwa yakajairika SP-U 400 × 170 × 15.5, ine hupamhi kubva pa400-600mm, ukobvu kubva pa8-16mm, uye kureba kwe6m, 9m, uye 12m. Kune zvakakosha zvinodikanwa senge hombe, kuchera kwakadzika, mamwe anopisa-akatenderedzwa U-mirwi mirwi inogona kugadzirwa kureba kusvika 33m kuti isangane neyakadzama yekutsigira zvinodiwa.
Z-yakaumbwa nesimbi mapepa mirwi: Nekuda kwekugumira kugadzirwa kwemaitiro, zviyero zvakajairwa, zvine mhiri-chikamu kureba kubva pa800-2000mm uye ukobvu kubva pa8-30mm. Kureba kwakajairika kunowanzova pakati pe15-20m. Kurebesa kutaurwa kunoda kutangirwa kubvunzana nemugadziri kuti ive nechokwadi chekuti mashandiro anoita.
Kubva kuSoutheast Asia zviteshi kusvika kuNorth America mvura yekuchengetedza mvura, mirwi yesimbi, nekuchinjika kwayo, yakashandiswa mumapurojekiti akasiyana pasi rose. Aya anotevera matatu akajairwa nyaya zvidzidzo kubva kune vatengi vedu, achiratidza kukosha kwavo kunoshanda:
Philippine Port Expansion Project: Panguva yekuwedzera kwechiteshi chengarava muPhilippine, kutyisidzira kwemadutu kunokonzerwa nemadutu aigara achiitika. Dhipatimendi redu rehunyanzvi rakakurudzira kushandiswa kweU-yakaita hot-yakakungurutswa simbi mapepa mirwi yecofferdam. Nzira yavo yekuvhara yakasimba yakanyatsodzivisa kukanganisa kwemhepo yemhepo, kuve nechokwadi chekuchengetedzwa uye kufambira mberi kwekuvakwa kwechiteshi.
A Canadian water conservancy hub restoration project: Nekuda kwekutonhora kwechando panzvimbo yehubhu, ivhu rinowanzoita kushushikana kushanduka nekuda kwechando-inonyungudutswa, ichida kugadzikana kwakanyanya. Dhipatimendi redu rehunyanzvi rakakurudzira kushandiswa kweZ-yakaita hot-yakakungurutswa simbi mapepa mirwi yekusimbisa. Simba ravo rekukotama rakakwirira rinogona kumirisana nekuchinja kwekushushikana kwevhu, kuve nechokwadi chekushanda kwakagadzikana kwenguva refu kwenzvimbo yekuchengetedza mvura.
Chirongwa chekuvaka simbi muGuyana: Panguva yekuvakwa kwegomba rekutanga, chirongwa ichi chaida kudzora kwakasimba kwekutsika kwemateru kuti ive nechokwadi chekuchengetedzwa kwechimiro chikuru. Kondirakiti akachinjira kumirwi yedu yemarata akatonhora-akaumbwa kuti asimbise gomba renheyo, achibatanidza kusadzivirirwa nekuora uye kujairana nemhoteredzo yehunyoro yenzvimbo kuti ipedze chirongwa ichi.
Kubva kuSoutheast Asia zviteshi kusvika kuNorth America mvura yekuchengetedza mvura, mirwi yesimbi, nekuchinjika kwayo, yakashandiswa mumapurojekiti akasiyana pasi rose. Aya anotevera matatu akajairwa nyaya zvidzidzo kubva kune vatengi vedu, achiratidza kukosha kwavo kunoshanda:
Philippine Port Expansion Project:Panguva yekuwedzera kwechiteshi chengarava muPhilippine, tyisidziro yokunaya kwemhepo yaikonzerwa nemadutu aigara ichiuya. Dhipatimendi redu rehunyanzvi rakakurudzira kushandiswa kweU-yakaita hot-yakakungurutswa simbi mapepa mirwi yecofferdam. Nzira yavo yekuvhara yakasimba yakanyatsodzivisa kukanganisa kwemhepo yemhepo, kuve nechokwadi chekuchengetedzwa uye kufambira mberi kwekuvakwa kwechiteshi.
A Canadian water conservancy hub restoration project:Nekuda kwekutonhora kwechando panzvimbo yehub, ivhu rinowanzoita kushushikana kushanduka nekuda kwechando-inonyorovesa kutenderera, ichida kugadzikana kwakanyanya. Dhipatimendi redu rehunyanzvi rakakurudzira kushandiswa kweZ-yakaita hot-yakakungurutswa simbi mapepa mirwi yekusimbisa. Simba ravo rekukotama rakakwirira rinogona kumirisana nekuchinja kwekushushikana kwevhu, kuve nechokwadi chekushanda kwakagadzikana kwenguva refu kwenzvimbo yekuchengetedza mvura.
Chirongwa chekuvaka simbi muGuyana:Panguva yekuvakwa kwegomba rekutanga, chirongwa ichi chaida kudzora kwakasimba kwemateru deformation kuti ive nechokwadi chekuchengetedzwa kwechimiro chikuru. Kondirakiti akachinjira kumirwi yedu yemarata akatonhora-akaumbwa kuti asimbise gomba renheyo, achibatanidza kusadzivirirwa nekuora uye kujairana nemhoteredzo yehunyoro yenzvimbo kuti ipedze chirongwa ichi.
Ingave chirongwa chekuchengetedza mvura, purojekiti yechiteshi, kana tsigiro yegomba rekuvaka, kusarudza iyo yakakodzera simbi pepa murwi mhando, maitiro, uye mataurirwo akakosha pakuona kunaka kweprojekiti. Kana iwe uri kuronga kutenga simbi simbi mirwi yepurojekiti yako, kana uchida yakadzama yechigadzirwa, sarudzo dzekugadzirisa, kana azvino makotesheni, ndapota inzwa wakasununguka kutibata. Isu tinopa zano rehunyanzvi rekusarudza uye makotesheni akakwana zvichienderana nezvido zvepurojekiti yako, kuve nechokwadi chekuti purojekiti yako inofambira mberi nemazvo.
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