Tirohanga o T76 Full Threaded Steel Self Drilling Rock Bolt
Ko nga punga keri whaiaro he momo motuhake mo nga punga rakau. Ko te punga keri-whaiaro kei roto he moka keri patunga tapu, he pae rino kowhao o te diameter o waho me roto me te nati hono. He mea hanga te tinana punga ki te ngongo maitai tuwhera me te miro porowhita o waho. Ko te ngongo rino te moka parapara i tetahi pito me te nati e rite ana ki te pereti mutunga maitai. Ka whakamahia nga punga keri whaiaro i runga i te ahua o te pae rino kowhao (rakau) he moka keri patunga tapu ki runga, kaua ki te moka keri matarohia.
Te Whakatakotoranga mo nga Rakau Punga Keri Whaiaro
R25N | R32L | R32N | R32/18.5 | R32S | R32SS | R38N | R38/19 | R51L | R51N | T76N | T76S | |
Ko te diameter o waho (mm) | 25 | 32 | 32 | 32 | 32 | 32 | 38 | 38 | 51 | 51 | 76 | 76 |
Te diameter o roto(mm) | 14 | 22 | 21 | 18.5 | 17 | 15.5 | 21 | 19 | 36 | 33 | 52 | 45 |
Te diameter o waho, whai hua(mm) | 22.5 | 29.1 | 29.1 | 29.1 | 29.1 | 29.1 | 35.7 | 35.7 | 47.8 | 47.8 | 71 | 71 |
Te kaha kawenga mutunga (kN) | 200 | 260 | 280 | 280 | 360 | 405 | 500 | 500 | 550 | 800 | 1600 | 1900 |
Te kaha kawenga (kN) | 150 | 200 | 230 | 230 | 280 | 350 | 400 | 400 | 450 | 630 | 1200 | 1500 |
Te kaha matara, Rm(N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
Te kaha tuku, Rp0, 2(N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
Taumaha (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 |
Ko te painga me te tono o nga Roopu Punga Whaiaro
Ko te mahi o te rakau punga torino hollow grouting he grouting, no reira ka kiia hoki he paipa grouting. Ka taea te huri i roto i te mahere whanui kia tutuki ai te pehanga tuatahi. I raro i te pehanga, ka rere atu te slurry o roto, ehara i te mea he pumau tonu ki runga i a ia ano, engari ka uru ano ki te kohao punga i te wa e puhake ana te slurry, ka whai waahi ki te whakakotahi i te toka huri noa. Kei a ia ano nga painga ki te tono me te whakamahere, na reira ka taea e ia te whakaatu i ona ake painga ki te tono:
1, Kei raro i tenei paanga ka taea te whakatutuki i te paanga tautoko tere tuatahi ka taea te whakahaere pai i te whakarereketanga o te toka a tawhio noa ka taea te whakatutuki i te paanga pai.
2、 Ka whakamahia he huarahi tuwhera ki te whakamahere, te whakauru i nga rakau punga me nga putorino. Ko tenei ahua o te whakamahere he nui nga painga. Mena he putorino tuku iho, ka ngaro pea na te toia whakamuri me te whakamuri, kaore e puta he ahuatanga penei.
3, Ka taea e ia te whakapai ake i te kounga o te kaupapa, he mea tika na te mea ka taea e ia te whakatutuki i te nui o te whakakii i te wa e pupuhi ana, me te taha o te pupuhi, ka taea te whakatutuki i te painga o te pupuhi.
4. He pai tana noho kore. Na te taapiri o etahi atu taputapu i te wa e whakamahia ana, ka piki ake tona koretake, ka taea e te slurry te takai i te rakau punga tuwhera katoa. Na tenei ka kore e puta te waikura i te wa e whakamahia ana ka taea te whakamahi mo te wa roa.
5、 He tino watea hoki i runga i te taputapu, he mea tino nui hoki. I te wa e watea ana i runga i te taputapu, ka taea te whakapoto i te waa patuiro me te wa hanga. I te taha o te taputapu, kare e hiahiatia he wiri hei whakatutuki i nga whakaritenga o te nati taputapu me te papa.