Pa-Site Steel Structure Assembly + Integral Hoisting Construction Workflow + Mafungiro Akakosha

Nhanganyaya:Inkuvakwa kwesimbi yekugadzira, "ground assembly + heavy-crane integral hoisting" (kuunganidza chimiro zvachose pasi uye kuchisimudza panzvimbo sechinhu chimwe chete uchishandisa makireni anorema) ndeimwe yenzira dzekuvaka dzinodhura, dzakachengeteka, uye dzinodzorwa nemhando dziripo nhasi.

Kuenzaniswa ne "high-altitude loose assembly" (kuunganidza zvidimbu chidimbu nechidimbu kumusoro mumhepo), nzira iyi inoderedza zvakanyanya basa rine njodzi pakureba, inoderedza welding defect rates, uye inonyatso kudzora deformation yemaitiro. Nekudaro, inoda yakasimba yepasi saiti kugadzirira, yakakwira-chaiyo gungano jig setup, yakasimba kusimudza engineering kuverenga, uye isina chikanganiso pane-saiti kusaina uye kuraira.

Pazasi pane yakazara uye yakamisikidzwa tekinoroji gwara repa-site simbi chimirogungano uye kusimudza kwakabatana-yakarongedzwa neyakajeka workflows uye inoshanda, yakatwasuka tekinoroji zvinodiwa kuti zvive nyore kutarisa.

I. Mucherechedzo Wepakati weKuvaka Nzira

Kuvaka Kufamba Kwekuita Logic: Fekitori yekugadzira zvinhu zvesimbi muzvikamu → Pa-saiti yevhu gungano pane jigs → Kugadziriswa kweWelding, weld inspection (NDT) & pendi kubata-up → Imwe-chidimbu chakakosha kusimudzwa pachinzvimbo → Kugadzirisa uye kurongeka kwechimiro.

Hunhu Hunokosha

•  Basa Rinoenderana Nepasi Pese: Mabasa ekutanga anoitwa pasi, achidzikisa zvakanyanya njodzi dzekudonha uye njodzi dzepamusoro-soro.

•  Unhu Hunodzoreka: Gungano, welding, uye kurongeka kunoitika munzvimbo yakagadzikana, inosvikika, ichiva nechokwadi chepamusoro uye chivakwa chemhando.

•  Kushanda Kwekuvaka Kwepamusoro: High-altitude welding and bolting zvinoderedzwa, izvo zvinonyanya kukurumidzira kufambira mberi kwekuvaka.

Kuganhurirwa

•  Nzvimbo YeGungano Yakakura Inodiwa: Inoda nzvimbo yakatambanuka, nhanho, uye yakanyatsokochekerana kuitira gungano panzvimbo.

•  Midziyo Inorema & Macheki Akasimba: Inoda makireni ekusimudza matani marefu uye maverengero akasimba einjiniya ekusimudza mamiriro uye simba rekutakura ivhu.

Applicable Scenarios

Yakavhurika-saiti simbi yekuvakwa kuvaka, senge hombe-span simbi trusses, padenga simbi modules, akawanda-span simbi mafuremu, uye heavy-duty crane girder maassemblies.

II. Pedzisa Standardized Construction Workflow

Yakajairwa Maitiro Kuyerera: Kugadzirira Kwekuvaka → Saiti Kukwirisa & Kubata → Gungano Jig Setup & Kugamuchirwa → Chikamu Kugamuchira & Kuongororazve → Ground Gungano → Welding Works → Weld Testing (NDT) & Anti-Corrosion Paint Kubata-up → Kusimudza Lug & Rigging Setup → Yekuyedza Kusimudza Muedzo → Yekuyedza Kusimudza Muedzo Kugadzirisa-Kugadziridza & Kugadzirisa Kwenguva → Kuongororazve Grid Matemo & Kukwidziridzwa → Kubatanidza Kusingaperi & Kusunga → Kubvisa Rigging → Kugamuchirwa kweProjekiti → Gungano Jig Kubviswa

1. Early-Stage Kuvaka Gadziriro (Yakanyanya Kukosha Danho)

Kana kugadzirira kwekutanga kusina kukwana, nyaya dzakadai sekugadzirwa kwemaitiro, kuputsa, kana zvikanganiso zvinogona kuitika nyore nyore panguva yekuunganidza nekusimudza. Nyatsotarisa pane aya mana akakosha mabasa:

•  Ronga Kutanga: Gadzira chirongwa chakazvipira chekusimudza. Kune yakanyanya-njodzi, yakanyanya-yakakosha mashandiro, kuongorora kwenyanzvi uye kubvumidzwa zviri pamutemo zvinosungirwa. Zadzisa akadzama einjiniya maverengero emamiriro ekushanda kwecrane, kushushikana kwenhengo, kugona kwepasi, uye mitoro yekusimudza.

•  Kuongororwa Kwezvinhu & Gwaro: Ongorora zvitupa zvemufekitari zvekuenderana, mill test report (MTR), marekodhi efekitari asiri destructive test (NDT), uye mapepa ekuona kwedimensional. Kudzivirira zvakasimba chero zvisingaenderane zvikamu kuti zvipinde panzvimbo yebasa.

•  Kuronga Kwemarongedzero eSaiti: Nyatsosarudza nzvimbo dzakaparadzana dzekuchengetera zvinhu, basa rekugadzira pasi, uye nzvimbo yekufambisa ye crane/outrigger. Panheyo dzevhu dzakapfava, chera uye tsiva neshure kwakasimba, compact, uye gadzira/omesa ivhu pachine nguva.

•  Kuzivisa nezvekuchengetedzwa kwevashandi: Mawelder, ma crane operators, masigner, neriggers vanofanira kunge vaine zvitupa zvinobatika. Ita zvakakwana kuchengetedza uye tekinoroji pfupiso yevashandi vese, kujekesa mabasa ega uye kurambidzwa kwekuchengetedza.

2. Gungano Jig Setup uye Kubvuma

Iyo jig yegungano (ivhu rekutsigira furemu) yakakosha pakurongeka kwegungano. Casual assembly kana substandard, makeshift masisitimu anorambidzwa zvachose!

•  Shandisa Standard Structural Steel: Gadzira jig uchishandisa zvikamu zvesimbi zviri munyika kuti uone kusimba uye kugadzikana kwakakwana, kudzivirira kugadzikana kwepasi, kutsauka kwechimiro, kana kuzunguzika mushure mekurodha.

•  Magadzirirwo uye Mamiriro Akanyatsojeka: Ronga nemazvo mitsara yegwaro; nyatso dzora magedhi egidhi, kukwirisa, uye kuenzana. Kune mahombe-span zvikamu, gadzira mu-pre-camber (yakananga kumusoro curve) zvinoenderana nedhizaini yekumisa kuderera kweramangwana pasi pemitoro yebasa.

•  Kuongorora kwakazvipira & Kusaina: Ongororo yehunyanzvi inofanirwa kuitwa kana jig setup yapera. Rekodha uye chengeta zvese mativi, kukwirira, uye kufuratira kuyerwa. Iyo jig inogona kushandiswa chete mushure mekusaina-yakarongeka

3. Chikamu Delivery uye Ground Assembly

Ground assembly ndiyo nzira yakakosha yekudzora huwandu hwemhando yezvimiro. Kudzora chaiko kwakakosha:

•  Inbound Component Inspection: Ongorora chikamu chega chega paunosvika kuti chitaridzike, kuchinjika kwekutumira, marangi ekudzivirira, uye kurongeka kwegomba. Rongedza uye gadzirisa chero diki deformation isati yaungana.

•  Jig Positioning & Adjustment: Mushure mekugara pajig, shandisa majeki ehydraulic uye tambo dzevarume kunyatsogadzirisa uye kunyatso kudzora span, axis lines, kukwirira, midzi gap (joint fit-up gap), uye kurongeka kwakatwasuka.

•  Tack Welding by Certified Welders: Certified welders vanofanira kuita tack welding (temporary holding welds). Iyo tack weld kureba uye fillet gumbo saizi inofanirwa kusangana nehunyanzvi zviyero, kudzivirira porosity, kutsemuka, uye kumwe kukanganisa kwewelding.

•  Symmetrical Welding & Stress Relief: Formal welding inofanira kunyatsotevera misimboti ye "symmetrical welding" uye "back-step welding" (welding in short alternating segments) kuti isunungure thermal stress zvakaenzana uye kuderedza warping. Kune mahwendefa akakora esimbi, nyatso shandisa preheating uye interpass tembiricha zvinodzora.

•  Post-Assembly Verification: Kana gungano rapera, nyatsoongorora mativi ose, kukosha kwecamber, uye kutwasanuka kwepashure kuti uve nechokwadi chekutevedzera zvizere macode einjiniya nedhizaini yedhizaini.

4. Weld Inspection uye Anti-Corrosion Paint Touch-up

•  Non-Destructive Testing (NDT): Ita Ultrasonic Testing (UT) kana Radiographic Testing (RT) maererano nemagadzirirwo acho. Chero chipi chisingaenderane neweld chinofanirwa kubviswa zvachose, kusungirirwazve, uye kuyedzwazve kusvika 100% inokodzera.

•  Weld Cleaning & Repainting: Geya majoini akaiswa akatsetseka, bvisa ngura, slag, uye spatter, uye wobva waisa matching anti-corrosion primer netopcoat kuti uve nechokwadi chekuramba chiripo chekudzivirira.

•  Kudzivirirwa Kwepamusoro: Chengetedza nzvimbo dzakasimba dzemabhaudhi anokweshana, maburi mabhoti, uye pendi dzakapedzwa layers kubva kune weld spatter, kusvibiswa kwegirisi/mafuta, uye ma scratches.

5. Kusimudza Points uye Rigging Selection

Core Lifting Chengetedzo Rule: Usambofa wakachinja mapoinzi ekusimudza pasina mvumo, usambosanganisa rigging risingaenderane, uye usambofa wakaisa zvinhu kune masimba asina kunaka.

•  Shandisa Malugi Anosimudza Akagadzirwa: Gara shandisa magaro ekusimudza akagadzirwa kare, akagadzirwa nefekitari (padhi maziso). Kusatenderwa pa-saiti welding kana kuchera maburi kune makeshift ekusimudza kunorambidzwa zvachose. Yese yekusimudza lug welds inofanirwa kuongororwa 100% NDT.

•  Rigging Capacity Calculation: Sarudza tambo tambo dzesimbi, cheni, nekusimudza zvipfuranhuhwira zvichibva pamitoro yakaverengerwa, zvichibatanidza zvinhu zvine simba zvekuchengetedza mutoro. Kuwedzeredza kunorambidzwa zvachose.

• Makona Protectors: Isai zvidziviriri zvemakona (zvinopfavisa/magadhi ekumucheto) pamakona ese akapinza nekumucheto kwenhengo dzesimbi kudzivirira tambo dzewaya kuti dzisadambuke kana kukuvara.

• Kusimbaradza Kwenguva: Wedzera mabracing struts/nhengo kune dzakatetepa kana dzakatetepa-madziro masections (senge matrusses akareba) kudzivirira kumonyoroka, bhachi, kana deformation yemunharaunda panguva yekusimudza.

6. Muedzo Simudza Muedzo (Haufanire Kuregwa)

Kukwidzwa kwekutongwa ndiyo yekupedzisira inodzivirira mhinganidzo kurwisa tsaona dzekusimudza.

•  Simudza uye Hover: Simudza chikamu chacho zvinyoro nyoro 200–300 mm kunze kwejig yeassembly, woibata yakarembera mudenga kwemaminetsi mashanu kusvika gumi.

•  Kuongorora Kwakakwana: Nyatsoongorora: zvinhu zvinotakura zvinhu panzvimbo dzekusimudza, kubvongodzwa kwemagetsi, kutsauka kwenhengo yese uye yemunharaunda, kugadzikana kwecrane, kugara pasi pevanobuda kunze, uye chero kukanganisa kana kubvongodza pajig.

•  Kudzikira Pakarepo Pakusagadzikana: Kana paine ruzha rusina kujairika, kukanganiswa kwechimiro, kana kugadzikana kwakanyanya kwepasi kukaonekwa, dzikisa chikamu ichi kumashure kwejig nekukasika. Kusimudza zviri pamutemo kunogona chete kuenderera mushure mekugadzirisa matanho abvumidzwa.

7. Yakazara-Assembly Hoisting, Positioning, uye Yenguva Kuchengetedza

•  Kusaina Kwemunhu Mumwechete Kwakabatana: Mashandiro anofanirwa kutungamirwa nemutungamiriri mumwe chete akagadzwa achishandisa masaini emaoko akaenzana uye mirairo yezwi. Kusaina vanhu vakawanda uye kuita mhirizhonga kunorambidzwa zvachose.

• Smooth Crane Movements: Kusimudza, kurovera (swinging), uye luffing (boom derricking) zvinofanira kuramba zvakatsetseka uye zvishoma nezvishoma. Dzivisa kumira kamwe kamwe, kutendeuka kwakapinza, kana mitoro inovhundutsa. Vashandi vepasi vanofanira kushandisa mitsara yemategi (tambo dzekutungamira) kudzikamisa chimiro chechikamu uye kudzivirira kubonderana nezvivakwa zviripo.

•  Positioning & Immediate Temporary Support: Kana wagara pazvitsigiso zvechigarire, nyatso gadzirisa maekisi egridi, kukwirira, uye kusimba kwemvura yakatwasuka. Pakarepo isa struts yekutsigira kwenguva pfupi uye simbisa tambo dzevarume.

•  Core Safety Red Line: Usambofa wasunungura crane hook kusvikasimbi yakagadzirwainoumba yakagadzikana, inozvitsigira yemaitiro ehurongwa.

8. Kubatana Kwechigarire uye Kupedzisa Mabasa

•  Kudzosa Kwesimba Kwepamusoro Kutanga: Koshesa kusungirirwa kwebhaudhi rine simba guru. Nyatsotevedzera nhanho mbiri yekusimbisa kutevedzana: "Yekutanga Kusimbisa → Final Torque Tightening". Maka bhaudhi rimwe nerimwe zvakajeka mushure mekusunga kwekupedzisira kudzivirira kupotsa, kuregedzera, kana kuwedzeredza-torque.

•  On-Site Splice Welding: Ita pa-site butt uye splice welds muma-multi-pass layer, uye ita non-destructive test (NDT) nekukasika kana wapedza.

•  Pakakwana Kuyera Kwemaitiro: Ongorora zvakare mativi ese, kukwirira, nekutsauka ukoshi. Kana yangobvumidzwa sekuenderana, bvisa zvakachengeteka giya rekusimudza, zvitsigiro zvenguva pfupi, uye jig yegungano repasi.

•  Kugadziridza Coating & Handover: Bata zvese zvakakuvadzwa zvinodzivirira kukoromoka uye mabhachi asingapindi moto munzvimbo dzakakanganiswa kuti upedze kuisa.

III. Yakakosha Pa-Saiti Chengetedzo (Makiyi Pitfalls ekudzivisa)

1. Gungano Rokudzora Unhu Hwenzvimbo

•  Solid Jig Foundation: Ivhu riri pasi pejig regungano rinofanira kunge rakatsiga, rakamanikana, uye rakatsetseka. Basa regungano rinorambidzwa zvachose pavhu rakapfava kana pasi rakanyoroveswa nemvura panguva yekunaya kwemvura kudzivirira kusagadzikana kwekugara.

•  Strict Pre-camber Control: Seta nemazvo pre-camber (yauri nemaune yakakwira curve) yenhengo dzakakura zvichienderana nemagadzirirwo akakosha. Ongorora kaviri zviyero pamberi uye mushure mekusangana kudzivirira kudzika pasi mushure mekumira.

•  Zvakaoma Weather Welding Restrictions: Kuregedza nekukasika mukati memhepo ine simba, mvura, sinou, kana kutonhora kwechando. Ita shuwa kuti nzvimbo dzakanyorova dzesimbi dzakanyatsoomeswa nemwenje wekudziya usati watangazve welding.

•  Chengetedza High-Strength Bolt Friction Surfaces: Nyatsodzivirira mabhaudhi anodhumhana. Kukuya, kusvibiswa kwemafuta, kana weld spatter kupisa zvinorambidzwa zvachose, kuve nechokwadi chekuti slip coefficient inosangana neinjiniya zviyero.

2. Inosungirwa Kusimudza Kuchengetedza Mitsetse Tsvuku

•  Mamiriro ekunze anorambidzwa: Kusimudzwa kunorambidzwa zvachose panguva yemhepo ine simba yeForce 6 zvichikwira (sipidhi yemhepo ≥ 10.8 m/s), mhute yakakora, kunaya kwemvura, kana chiedza chehusiku chisina kukwana.

•  Crane Outrigger Support: Crane outriggers dzinofanira kutsigirwa zvizere nema plates esimbi gobvu anotakura zvinhu pamusoro pevhu rakasimba, rakasimbiswa kudzivirira crane tipping kana outrigger punch-through.

•  Rigid Safety Exclusion Zone: Gadzira chinovharira chakaoma uye chakajeka chekusarudzika mukati meiyo crane inoshanda radius. Vashandi vasina mvumo vanorambidzwa zvachose kupinda, kupfuura, kana kugara munzvimbo.

•  Pre-Shift Rigging Inspection: Ongorora midziyo yose yekusimudza, hardware yekurigira, uye tambo dzewaya zuva rega rega rebasa risati rasvika. Tsiva nekukasira kana tambo dzewaya dzakatyoka, kupfeka zvakanyanyisa, kana kinks / deformation yakadarika zvinobvumidzwa.

3. Kazhinji Njodzi uye Matanho Ekudzivirira

•  Excessive Component Deformation: Pre-set design camber, wedzera temporary reinforcement struts, tevera symmetrical welding sequences, uye ita cheki yakazara yekusimudza kusimudza.

•  Kusimudza Lug Kubvarura Kusakundikana: Ita dhizaini yakasarudzika yekusimudza makumbo, iva nechokwadi chekupinda kwakazara ne100% NDT yekuongorora, uye kurambidza zvachose mapoinzi ekusimudza asina kutenderwa.

•  Crane Ground Settlement kana Tipping: Gadzirisa uye omesa ivhu pachine nguva, isa marata anorema pasi pezvinobatidza, uye ongorora kugadzikana kwepasi panguva yekusimudza kwekuedza.

•  Kusagadzikana Kwemaitiro Mushure mekuiswa: Isai tambo dzevarume nekuchimbidza uye masimbi ekutsigira kwenguva pfupi, uchisimbisa mutemo uyu: "Usambofa wasunungura hoku yecrane isati yavharirwa."

•  Substandard High-Strength Bolting: Nyatsodzivirira panodhumhana, shandisa maitirwo ekugadzirisa torque yakajairwa, uye ongorora nekumaka-mavara bhaudhi rega rega kana wapedza.

IV. Summary

Iyo yakakosha manejimendi logic yepa-saiti simbi chimiro musanganouye kusimudza kwakabatana kunogona kupfupikiswa se: kunyatsoita musangano wepasi, kuomarara jig kudzora, kusimba kwekusimudza kuverenga, kutsetseka uye kwakadzikama kusimudza, uye kusambosunungura hoko usati wachengetedza.

Nekunyatsogadzirisa mbiru ina dzakakosha-jig quality, welding deformation, kusimudza mitoro mamiriro, uye kugadzikana kwemaitiro echinguva-zvizhinji zvinowanzoitika zvikanganiso zvekuvaka uye njodzi dzekuchengetedza zvinogona kudziviswa, kupa mhinduro yakachengeteka, yakavimbika, uye inobudirira kune yakakura-span simbi structural engineering.