Bayanin Bars ɗin Karfe na Anchor Hollow
Ana samar da sandunan ƙarfe mara ƙarfi a cikin sassan da daidaitattun tsayin 2.0, 3.0 ko 4.0 m. Matsakaicin diamita na waje na sandunan ƙarfe mara nauyi daga 30.0 mm zuwa 127.0 mm. Idan ya cancanta, ana ci gaba da sandunan ƙarfe mara ƙarfi tare da goro. Ana amfani da nau'o'in nau'i nau'i nau'i nau'i nau'i nau'i nau'i na hadaya dangane da nau'in ƙasa ko yawan dutse. Ƙarfe maras tushe ya fi ƙaƙƙarfan sandar da ke da yanki iri ɗaya saboda ingantacciyar ɗabi'a ta tsarinsa ta fuskar ƙwanƙwasa, kewayawa da taurin kai. Sakamakon shine mafi girma buckling da kwanciyar hankali don daidaitaccen adadin karfe.
Ƙayyadaddun Sandunan ankar Hakowa Kai
| Ƙayyadaddun bayanai | R25N | R32L | R32N | R32/18.5 | R32S | Saukewa: R32SS | R38N | R38/19 | R51L | R51N | T76N | T76S |
| Diamita na waje (mm) | 25 | 32 | 32 | 32 | 32 | 32 | 38 | 38 | 51 | 51 | 76 | 76 |
| Diamita na ciki, matsakaita(mm) | 14 | 22 | 21 | 18.5 | 17 | 15.5 | 21 | 19 | 36 | 33 | 52 | 45 |
| Diamita na waje, tasiri (mm) | 22.5 | 29.1 | 29.1 | 29.1 | 29.1 | 29.1 | 35.7 | 35.7 | 47.8 | 47.8 | 71 | 71 |
| Ƙarfin kaya na ƙarshe (kN) | 200 | 260 | 280 | 280 | 360 | 405 | 500 | 500 | 550 | 800 | 1600 | 1900 |
| Ƙarfin ɗorawa (kN) | 150 | 200 | 230 | 230 | 280 | 350 | 400 | 400 | 450 | 630 | 1200 | 1500 |
| Ƙarfin ɗaure, Rm (N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
| Ƙarfin Haɓaka, Rp0, 2(N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
| Nauyi (kg/m) | 2.3 | 2.8 | 2.9 | 3.4 | 3.4 | 3.6 | 4.8 | 5.5 | 6.0 | 7.6 | 16.5 | 19.0 |
| Nau'in zaren (hannun hagu) | ISO 10208 | ISO 1720 | MAI T76 | |||||||||
| Karfe daraja | TS EN 10083-1 | |||||||||||
Aikace-aikace na Sandunan Anchor Drilling Kai
A cikin 'yan shekarun nan, tare da karuwar bukatar tallafin geotechnical, ana sabunta kayan aikin hakowa akai-akai da haɓakawa. A lokaci guda kuma, farashin aiki da haya ya karu, kuma abubuwan da ake buƙata don lokacin gini sun ƙara ƙaruwa. Bugu da kari, yin amfani da sandunan anga masu hakowa da kai a cikin yanayin yanayin kasa mai saurin rugujewa yana da kyakkyawan sakamako na anga. Waɗannan dalilai sun haifar da ƙara yaɗuwar aikace-aikacen ƙwanƙwasa sandunan anka. Ana amfani da sandunan anka mai hakowa da kai a cikin yanayi masu zuwa:
1. An yi amfani da shi azaman sandar anga da aka riga aka saka: ana amfani da shi a yanayi kamar gangara, tonowar ƙasa, da anti iyo don maye gurbin igiyoyin anga. Kai hakowa m sanduna anka ana hakowa zuwa zurfin da ake bukata, sa'an nan kuma karshen grouting ne da za'ayi. Bayan ƙarfafawa, ana amfani da tashin hankali;
2. Amfani da micropiles: Kai hakowa m anka sanduna za a iya hakowa da grouted ƙasa don samar da micropiles, fiye amfani da iska ikon shuka hasumiya tushe, watsa hasumiya tushe, ginin tushe, riƙe bango tari tushe, gada tari tushe, da dai sauransu;
3. Ana amfani da kusoshi na ƙasa: galibi ana amfani da su don tallafin gangara, maye gurbin sandunan anka na ƙarfe na al'ada, kuma ana iya amfani da su don goyon bayan tudu mai zurfi na tushe;
4. Ana amfani da kusoshi na dutse: A wasu gangaren dutse ko ramukan da ke da matsanancin yanayi ko haɓakar haɗin gwiwa, ana iya amfani da sandunan anka na hakowa da kai don hakowa da grouting don haɗa tubalan dutse tare don inganta kwanciyar hankali. Misali, za a iya ƙarfafa gangaren dutsen manyan tituna da hanyoyin jirgin ƙasa waɗanda ke da saurin rugujewa, kuma ana iya maye gurbin rumfunan bututun na yau da kullun don ƙarfafawa a wuraren buɗewar rami mara kyau;
5. Ƙarfafawa na asali ko sarrafa bala'i. Yayin da lokacin tallafi na tsarin tallafi na asali na geotechnical ya karu, waɗannan tsarin tallafi na iya fuskantar wasu matsalolin da ke buƙatar ƙarfafawa ko jiyya, kamar nakasar gangaren asali, daidaita tushen tushe, da kuma ɗaga saman hanya. Za a iya amfani da sandunan anka mai hakowa da kai don hakowa cikin asalin gangare, tushe, ko ƙasan hanya, da sauransu, don toshewa da ƙarfafa tsagewa, don hana afkuwar bala'o'in ƙasa.
