Hoʻohana i ka epoxy resin grout i ka hoʻoponopono alahaka

2023-01-04

1. Hoʻolauna papahana


  Aia ʻo Zhentou Bridge ma ka ʻaoʻao hikina o ke kaona ʻo Zhentou, ke kūlanakauhale ʻo Liuyang, ke alaloa panalāʻau S211 (ke alanui kūloko mua 1827), e hele ana i ka muliwai Liuyang. ʻO K7+378 ke kikowaena kikowaena. ʻO 175.441m ka lōʻihi o ke alahaka. ʻO ka haʻawe hoʻolālā he pae 15, e kau ana i ka pae 80. ʻO ka laula o ke alahaka: ʻupena 7.0m + 2 × 1.0m alahele, ʻo 72m ka lōʻihi o ke apo apo kiʻekiʻe, ʻo ka coefficient axis arch m=2.814, a ʻo ka lākiō o ke ala ala he 1. /7. Ua hoʻopau ʻia a wehe ʻia ke alahaka i Iulai 1976, a ua hana ʻia no 27 mau makahiki. Ma muli o ka piʻi ʻana o ka holo kaʻa a me ka hoʻopau ʻana i ka wā lōʻihi, ua pōʻino loa ka papa o ke alahaka, a ʻike ʻia nā māwae ma ka ʻaoʻao nui a me ka ʻōpū o ka ʻōpū, no laila ua hoʻoholo ʻia ʻo ia he alahaka weliweli Class III. Ma Mei 2003, hāʻawi ʻo Liuyang Municipal Highway Administration i ka Hunan Provincial Traffic Construction Quality Supervision, Test and Inspection Center e nānā i ka maikaʻi o nā ʻāpana like ʻole o ke alahaka. Ua ʻike ʻia he 343m mau māwae, me ka laulā kiʻekiʻe o 15cm. I mea e hōʻoia ai i ka palekana o ke alahaka, ua hoʻoholo kā mākou keʻena e lawe i ke ʻano o ka hoʻopaʻa ʻana i nā māwae epoxy resin grout e hooikaika i ke alahaka.


2. Nā hiʻohiʻona kumu a me ke ʻano o ka epoxy resin grout

a) Nā hiʻohiʻona kumu o Epinxy resin


  I. Hana kino maikai. Hiki i ke kulou a me ka ikaika tensile ke hiki i 300-400MPa, hiki i ka ikaika compressive ke hiki i 200MPa, liʻiliʻi ka hoʻoheheʻe wai, a ʻoi aku ka kiʻekiʻe o ka ikaika adhesive ma mua o nā mea composite ʻē aʻe.


  II. Ka ikaika kiʻekiʻe


  III. Paʻa maikaʻi. Loaʻa iā ia ka pale kino kino a me ka pale wai.


  IV. He maʻalahi ke kaʻina hana. He maʻalahi ka hana a mālama.


b) Hoʻomākaukau i ka epoxy resin adhesive


  ʻO ka mea hana nui o ka adhesive epoxy resin e44, Ma waho aʻe o ka mea hoʻoikaika paʻakikī, ka lāʻau curing, diluent, etc., i hoʻomākaukau ʻia ma o ka hoʻāʻo ʻana. ʻO ke kumu hoʻopili epoxy resin (ratio kaumaha) Mea maka Epoxy resin 6101 dibutyl xylene (a i ʻole acetone) ethylenediamine mea nui ʻO ka lāʻau hoʻopaʻa paʻakikī Lakiō 100 15-20 10 6-8.


epoxy resine 44


3. Hoʻoponopono kaʻina hana


  a) E wili mua i nā wahi ākea 5cm ma nā ʻaoʻao ʻelua o ka māwae me ka mīkini poli, a laila e hoʻomaʻemaʻe i ka māwae me ka acetone. ʻAʻohe ʻaila hinu, lepo, a pēlā aku.


  b) E hoʻoinu ʻia nā māwae pāpaʻu me ka hohonu ma lalo o 5mm me ka epoxy resin dilute solution, maloʻo, a laila ʻoki ʻia me ka epoxy resin mastic. ʻO ka hapa o ka epoxy resin dilute solution he epoxy resin: diluent: curing agent=1:0.4:0.25, hiki ke komo i loko o ke aʻa māwae. He ikaika kona hale a hiki ke hoʻopiha i nā māwae.


  c) No nā māwae me ka hohonu i ʻoi aku ma mua o 5mm, e hoʻokomo ʻia ka nozzle grouting ma kahi manawa o 30-50cm, a laila e hoʻopaʻa ʻia nā māwae me ka epoxy resin mastic, me ka laulā hoʻopaʻa ʻaʻole i emi iho ma mua o 5cm. Hoʻohana ʻia ka epoxy resin mastic e hoʻopaʻa i nā māwae, ʻo kekahi e hoʻopaʻa i nā māwae pāpaʻu, ʻo kekahi e hoʻomākaukau no ka grouting. He mea koʻikoʻi loa ke koho ʻana i kahi o ka lua nozzle grouting i hoʻokomo ʻia, pono e hoʻoholo ʻia e like me ka lōʻihi, ka hohonu, ke ʻano, ke ʻano a me nā mea ʻē aʻe o ka māwae koneki. ʻO ka mea maʻamau, pono e koho i nā kiko ma nā ʻaoʻao ʻelua o ka māwae a ma nā ʻāpana hakahaka a paʻa i mea e hiki ai i ka grout ke hiki i kēlā me kēia āpau, e pāʻani ana i ka hoʻoikaika a me ka pale ʻana i ka māwae.


  d) Ma hope o ka maloʻo loa ʻana o ka epoxy resin mastic, e hoʻokō ʻia kahi hoʻāʻo kinoea e nānā i ka pono o ka grout inlet, ka puka wai a me ka sila ʻana. 4 kg/cm2 kaomi ea e hoʻokomo mai ka lua grouting. Inā hoʻopuka ʻia ke kinoea mai ka puka wai a ʻaʻohe leaka ea ma ka sila sealant a me nā puka wai māwae ʻē aʻe, ʻo ia hoʻi, ua hoʻonohonoho pono ʻia ka puʻupuʻu puʻupuʻu a me ka puka wai a hilinaʻi ke sila. E pani i ka puka wai e hoʻonui i ke kaomi o ka māwae i 4 kg/cm2 a mālama i ke kaomi no 2 mau minuke. Inā ʻaʻohe leaka ea, he mea maʻamau. Inā loaʻa ka leaka ea ma ka mastic ma hope o ka ventila a me ka piʻi ʻana o ke kaomi, e hoʻopaʻa hou ʻia. Inā ʻoi aku ma mua o ʻelua mau puka wai ma hope o ka hoʻoheheʻe ʻana a me ka piʻi ʻana o ke kaomi, ʻo ia hoʻi, ua pili ka māwae me ʻelua mau māwae. I kēia manawa, e pani ʻia ka puka hoʻokuʻu kinoea a hiki i ka hiki ʻole o ka leaka kinoea ke mālama i ke kaomi, a e hana ʻia nā moʻolelo a me nā hōʻailona. Ma hope o ka hoʻokuʻu ʻana a me ka piʻi ʻana o ke kaomi, ʻaʻohe puka kinoea mai ka puka wai. Hiki paha ke ālai ʻia ke kahawai māwae e ka hana hoʻopaʻa sima. I kēia manawa, pono e hoʻohui ʻia ka puka wai a me ka puka grouting ma kahi kūpono o ka māwae ma kēia ʻāpana. Ma ke kumu, pono e loaʻa i ka māwae holoʻokoʻa nā ʻāpana inlet, puka waho, kaomi ʻana a me nā ʻāpana leak free.


  e) Ma hope o ka hoʻokō ʻia ʻana o ke ana kinoea, e hoʻohana ʻia ka epoxy resin grout no ke kaomi grouting. ʻAʻole e emi iho ke kaomi ea no ka grouting ma mua o 4 kg/cm2. 6. I ka wā grouting, e hoʻolohe i ke kūlana wai puka o ka grouting nozzle. Ma hope o ka hōʻoia ʻana ua piha ka nozzle grouting, e pani i ka puka wai o ka nozzle grouting, e hoʻonui i ke kaomi i 4 kg/cm2, e mālama i ke kaomi no ka liʻiliʻi o 5 mau minuke, a laila e ʻae iā ia e maloʻo maoli ma mua o 72 mau hola.


  f) E nānā inā ʻaʻohe hemahema o ka hoʻoponopono ʻana.


  g) Wehe i ka nozzle grouting a hoʻopaʻa i ka mortar epoxy e puka mai ana mai ka ʻili ʻili. Ma hope o 20 mau lā o ke kūkulu ʻana, ua hoʻopau maikaʻi ʻia ka hana hoʻoponopono ʻana o Zhentou Bridge. Ma o ka nānā maoli ʻana, ua hoʻokō nā māwae i hoʻoponopono ʻia me ka epoxy resin grout i ka hopena o ka hoʻonui ʻana i ka ikaika o ke apo apo. I kēia manawa, ua kūkulu ʻia ka hapa nui o nā alahaka ma nā alanui aupuni a me ka panalāʻau i nā makahiki 1970 a me 1980. Ma muli o nā haʻahaʻa haʻahaʻa haʻahaʻa, ʻaʻole hiki iā lākou ke hoʻomanawanui i ka ulu ʻana o ka nui o ke kaʻa a me ka ukana kaumaha. Ke pilikia nei ke alahaka i ka pōʻino nui a me ka hoʻololi ʻana, a ʻo ka haki ʻana o ka lāʻau lāʻau i nā pae like ʻole. No ka mālama ʻana a me ka hoʻoikaika ʻana i ia mau alahaka, e hoʻohana nui ʻia ka epoxy resin slurry crack repair technology i nā papahana mālama alahaka kahiko.


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