Hoʻokaʻawale ʻia nā kiaʻi alanui i nā pale pale maʻalahi, nā pale semi-rigid a me nā pale pale ʻoʻoleʻa. ʻO nā pale pale maʻalahi e pili ana i nā kiaʻi kaula, nā pale kiaʻi ʻoʻoleʻa e pili ana i nā pale kila sima, a ʻo nā pale semi-rigid ka mea maʻamau i nā pale kaola. ʻO nā guardrails beam he hale kaola i hoʻopaʻa ʻia me nā pou, e hilinaʻi ana i ka deformation kulou a me ka ʻāʻī o ka guardrail e pale aku i ka hui ʻana o nā kaʻa. Loaʻa i nā guardrails kekahi rigidity a me ka paʻakikī, a hoʻopaʻa i ka ikehu collision ma o ka deformation o ka crossbeam. He mea maʻalahi kona mau ʻāpana ʻino ke hoʻololi, loaʻa kekahi hopena induction hiʻona, hiki ke hoʻohui ʻia me ke ʻano laina alanui, a he helehelena nani. I waena o lākou, ʻo ka corrugated beam guardrail ka mea i hoʻohana nui ʻia ma ka home a ma waho i nā makahiki i hala. No ka laulā ākea.
1. Nā loina o ka hoʻonohonoho ʻana i nā kiaʻi alanui
Hoʻokaʻawale nui ʻia nā pale alanui i ʻelua ʻano: nā pale pale a me nā pale pale. ʻO 70 mika ka lōʻihi o ka hoʻonohonoho ʻana o ke alanui. Ke emi ka mamao ma waena o nā ʻāpana ʻelua o nā guardrail ma mua o 100 mika, pono e hoʻonohonoho mau iā lākou ma waena o nā ʻāpana ʻelua. Hoʻopili ʻia ka pā kia ma waena o ʻelua mau ʻāpana hoʻopiha. ʻO ka ʻāpana ʻeli me ka lōʻihi ma lalo o 100 mau mika pono e hoʻomau me nā pale o nā ʻāpana hoʻopiha ma nā ʻaoʻao ʻelua. I ka hoʻolālā ʻana i nā pale ala, pono e hoʻonohonoho ʻia nā kiaʻi inā e hoʻokō ʻia kekahi o kēia mau kūlana:
A. ʻO nā ʻāpana kahi e pili ana ke alanui i a me ke kiʻekiʻe o ka pā h i loko o ka laulā malu o ke Kiʻi 1.
B. ʻO nā ʻāpana e hui ana me nā alahao a me nā alaloa, kahi i loaʻa i nā kaʻa nā ʻāpana kahi e hāʻule ai ke kaʻa i ke alahao hui a i ʻole nā alanui ʻē aʻe.
C. Na pauku aia na muliwai, na loko, na kai, na poho, a me na wai e ae iloko o 1.0 mika mai ke kapuai o ke alanui ma na alahele a i ole na alanui papa mua no na kaa otomobile, a kahi e pilikia loa ai na kaa ke haule iloko.
D. ʻO ka ʻāpana triangular o ka puka komo a me nā puka puka o ke kaʻina o nā ala ākea a me waho o nā pihi radius liʻiliʻi o nā ramps.
2. Pono e hoʻokomo i nā kiaʻi alanui ma kekahi o kēia mau kūlana:
A. ʻO nā ʻāpana kahi e piʻi ai ke alanui i a me ke kiʻekiʻe o ka pā h ma luna o ka laina kiko ma ke Kiʻi 1.
B. ʻO nā ʻāpana kahi e piʻi ai ke alanui i a me ke kiʻekiʻe o ka pā h aia i loko o 1.0 mika mai ka lihi o ka honua poʻohiwi ma nā ala ākea a i ʻole nā alanui papa mua no nā kaʻa Shanghai epoxy papahele, ke loaʻa nā hale e like me nā hale gantry, nā kelepona pilikia, nā uʻi a i ʻole nā ʻāpana o nā overpass.
C. E like me na alanui kaaahi a me na alaloa, kahi e nahaha ai na kaa iloko o na alahao e pili ana a me na alanui e ae.
D. Nā ʻāpana mālie kahi e loli ai ka laulā o ke alanui.
E. Nā ʻāpana kahi i emi iho ai ka radius pōpuni ma mua o ka radius liʻiliʻi.
F. Hoʻololi wikiwiki i nā ʻāpana ala ma nā wahi lawelawe, nā wahi kaʻa a i ʻole nā ʻāpana kaʻa, a me nā ʻāpana i loko o nā wahi triangular kahi e puʻunaue ai nā pā a me nā pale a hoʻohui i nā kaʻa.
G. Ka pilina ma waena o nā wēlau o nā alahaka nui, waena a liʻiliʻi a i ʻole nā kihi o nā hale kiʻekiʻe a me ke alanui.
H. Ma kahi i manaoia he pono ke hoonoho i na kiai ma na mokupuni diversion a me na mokupuni hookaawale.
Ka manawa hoʻouna: ʻAukake-12-2024