\u2022 Va\u0301n khu\u00f4n \u0111\u01b0\u1ee3c gia c\u00f4ng, l\u1eafp d\u1ef1ng ngay t\u1ea1i c\u00f4ng tr\u01b0\u1eddng.
\u2022 Tr\u01b0\u1edbc khi th\u00e1o va\u0301n khu\u00f4n, b\u00ean B m\u1eddi gi\u00e1m s\u00e1t k\u1ef9 thu\u1eadt b\u00ean A \u0111\u1ebfn nghi\u1ec7m thu b\u1ec1 m\u1eb7t c\u1ee7a c\u1ea5u ki\u1ec7n.
Va\u0301n khu\u00f4n c\u1ed9t
Va\u0301n khu\u00f4n \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0 va\u0301n khu\u00f4n g\u1ed7 \u00e9p, th\u00e9p, nh\u1ef1a\u2026N\u1ebfu d\u00f9ng va\u0301n khu\u00f4n g\u1ed7, s\u1eed d\u1ee5ng c\u00e2y ch\u1ed1ng g\u1ed7 tr\u00f2n. \u0110\u01b0\u1eddng k\u00ednh c\u00e2y ch\u1ed1ng t\u1eeb 8 \u2013 10cm. S\u1eed d\u1ee5ng nh\u1eefng thanh g\u1ed7 5 x 10cm l\u00e0m gi\u1eb1ng ngang v\u00e0 d\u1ecdc.
– Tr\u01b0\u1edbc ti\u00ean ph\u1ea3i ti\u1ebfn h\u00e0nh \u0111\u1ed5 m\u1ea7m c\u1ed9t cao 50mm \u0111\u1ec3 t\u1ea1o d\u01b0\u1ee1ng d\u1ef1ng v\u00e1n khu\u00f4n. L\u01b0u \u00fd \u0111\u1eb7t s\u1eb5n c\u00e1c th\u00e9p ch\u1edd tr\u00ean s\u00e0n \u0111\u1ec3 t\u1ea1o ch\u1ed7 neo cho va\u0301n khu\u00f4n c\u1ed9t.
– Gia c\u00f4ng th\u00e0nh t\u1eebng m\u1ea3ng c\u00f3 k\u00edch th\u01b0\u1edbc b\u1eb1ng k\u00edch th\u01b0\u1edbc c\u1ee7a 1 m\u1eb7t c\u1ed9t.
– Gh\u00e9p c\u00e1c m\u1ea3ng theo k\u00edch th\u01b0\u1edbc c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng c\u1ed9t.
– D\u00f9ng g\u00f4ng (b\u1eb1ng th\u00e9p ho\u1eb7c g\u1ed7 c\u1ed1 \u0111\u1ecbnh ), kho\u1ea3ng c\u00e1ch c\u00e1c g\u00f4ng kho\u1ea3ng 50 cm .
– Ch\u00fa \u00fd : ph\u1ea3i \u0111\u1ec3 c\u1eeda s\u1ed5 \u0111\u1ec3 \u0111\u1ed5 b\u00ea t\u00f4ng, ch\u00e2n c\u1ed9t c\u00f3 tr\u1eeba l\u1ed7 \u0111\u1ec3 v\u1ec7 sinh tr\u01b0\u1edbc khi \u0111\u1ed5 b\u00ea t\u00f4ng.
\u2022 C\u00e1ch l\u1eafp gh\u00e9p :
-V\u1ea1ch m\u1eb7t c\u1eaft c\u1ed9t l\u00ean ch\u00e2n s\u00e0n, n\u1ec1n .
– Ghim khung c\u1ed1 \u0111\u1ecbnh ch\u00e2n c\u1ed9t b\u1eb1ng c\u00e1c \u0111\u1ec7m g\u1ed7 \u0111\u1eb7t s\u1eb5n trong l\u00f2ng kh\u1ed1i m\u00f3ng \u0111\u1ec3 l\u00e0m c\u1eef .
– D\u1ef1ng l\u1ea7n l\u01b0\u1ee3t c\u00e1c m\u1ea3ng ph\u00eda trong r\u1ed3i \u0111\u1ebfn c\u00e1c m\u1ea3ng ph\u00eda ngo\u00e0i r\u1ed3i \u0111\u00f3ng \u0111inh li\u00ean k\u1ebft 4 m\u1ea3ng v\u1edbi nhau , l\u1eafp g\u00f4ng v\u00e0 n\u00eam ch\u1eb7t.
– D\u00f9ng d\u1ecdi ki\u1ec3m tra l\u1ea1i \u0111\u1ed9 th\u1eb3ng \u0111\u1ee9ng c\u1ee7a c\u1ed9t.
– C\u1ed1 \u0111\u1ecbnh v\u00e1n khu\u00f4n c\u1ed9t b\u1eb1ng c\u00e1c neo ho\u1eb7c c\u00e2y ch\u1ed1ng.
Va\u0301n khu\u00f4n d\u1ea7m.
G\u1ed3m 2 v\u00e1n khu\u00f4n th\u00e0nh v\u00e0 1 v\u00e1n khu\u00f4n \u0111\u00e1y. C\u00e1ch l\u1eafp d\u1ef1ng nh\u01b0 sau :
– X\u00e1c \u0111\u1ecbnh tim d\u1ea7m .
– R\u1ea3i v\u00e1n l\u00f3t \u0111\u1ec3 \u0111\u1eb7t ch\u00e2n c\u1ed9t .
– \u0110\u1eb7t c\u00e2y ch\u1ed1ng ch\u1eef T , \u0111\u1eb7t 2 c\u00e2y ch\u1ed1ng s\u00e1t c\u1ed9t, c\u1ed1 \u0111\u1ecbnh 2 c\u1ed9t ch\u1ed1ng, \u0111\u1eb7t th\u00eam m\u1ed9t s\u1ed1 c\u1ed9t d\u1ecdc theo tim d\u1ea7m .
– R\u1ea3i v\u00e1n \u0111\u00e1y d\u1ea7m tr\u00ean x\u00e0 \u0111\u1ee1 c\u1ed9t ch\u1ed1ng T , c\u1ed1 \u0111\u1ecbnh 2 \u0111\u1ea7u b\u1eb1ng
c\u00e1c gi\u1eb1ng .
– \u0110\u1eb7t c\u00e1c t\u1ea5m v\u00e1n khu\u00f4n th\u00e0nh d\u1ea7m, \u0111\u00f3ng \u0111inh li\u00ean k\u1ebft v\u1edbi \u0111\u00e1y d\u1ea7m, c\u1ed1 \u0111\u1ecbnh m\u00e9p tr\u00ean b\u1eb1ng c\u00e1c g\u00f4ng , c\u00e2y ch\u1ed1ng xi\u00ean , bu l\u00f4ng .
– Ki\u1ec3m tra tim d\u1ea7m , ch\u1ec9nh cao \u0111\u1ed9 \u0111\u00e1y d\u1ea7m cho \u0111\u00fang thi\u1ebft k\u1ebf .[1]Va\u0301n khu\u00f4n s\u00e0n
\u2022 Va\u0301n khu\u00f4n s\u00e0n l\u00e0 va\u0301n khu\u00f4n g\u1ed7, th\u00e9p, nh\u1ef1a, V\u00c1N \u00c9P PH\u1ee6 FILM\u2026.
– D\u00f9ng v\u00e1n khu\u00f4n th\u00e9p \u0111\u1eb7t tr\u00ean h\u1ec7 d\u00e0n gi\u00e1o ch\u1eef A ch\u1ecbu l\u1ef1c b\u1eb1ng th\u00e9p v\u00e0 h\u1ec7 x\u00e0 g\u1ed3 b\u1eb1ng g\u1ed7, d\u00f9ng t\u1ed1i \u0111a di\u1ec7n t\u00edch v\u00e1n khu\u00f4n th\u00e9p \u0111\u1ecbnh h\u00ecnh, v\u1edbi c\u00e1c di\u1ec7n t\u00edch c\u00f2n l\u1ea1i th\u00ec d\u00f9ng k\u1ebft h\u1ee3p v\u00e1n khu\u00f4n tre ph\u1ee7 film.
– Theo chu vi s\u00e0n c\u00f3 v\u00e1n di\u1ec1m v\u00e1n di\u1ec1m \u0111\u01b0\u1ee3c li\u00ean k\u1ebft \u0111inh con \u0111\u1ec9a v\u00e0o th\u00e0nh v\u00e1n khu\u00f4n d\u1ea7m v\u00e0 d\u1ea7m \u0111\u1ee1 v\u00e1n khu\u00f4n d\u1ea7m.
Ch\u00fa \u00fd: Sau khi ti\u1ebfn h\u00e0nh xong c\u00f4ng t\u00e1c v\u00e1n khu\u00f4n th\u00ec ph\u1ea3i ki\u1ec3m tra , nghi\u1ec7m thu v\u00e1n khu\u00f4n theo n\u1ed9i dung sau:
– Ki\u1ec3m tra h\u00ecnh d\u00e1ng k\u00edch th\u01b0\u1edbc theo B\u1ea3ng 2-TCVN 4453 : 1995
– Ki\u1ec3m tra \u0111\u1ed9 c\u1ee9ng v\u1eefng c\u1ee7a h\u1ec7 \u0111\u1ee1, h\u1ec7 ch\u1ed1ng.
– \u0110\u1ed9 ph\u1eb3ng c\u1ee7a m\u1eb7t ph\u1ea3i v\u00e1n khu\u00f4n (b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac v\u1edbi m\u1eb7t b\u00ea t\u00f4ng).
– Ki\u1ec3m tra k\u1ebd h\u1edf gi\u1eefa c\u00e1c t\u1ea5m gh\u00e9p v\u1edbi nhau.
– Ki\u1ec3m tra chi ti\u1ebft ch\u00f4n ng\u1ea7m.
– Ki\u1ec3m tra tim c\u1ed1t , k\u00edch th\u01b0\u1edbc k\u1ebft c\u1ea5u.
– Kho\u1ea3ng c\u00e1ch v\u00e1n khu\u00f4n v\u1edbi c\u1ed1t th\u00e9p.
– Ki\u1ec3m tra l\u1edbp ch\u1ed1ng d\u00ednh, ki\u1ec3m tra v\u1ec7 sinh va\u0301n khu\u00f4n \u0111\u1ed1i v\u1edbi va\u0301n khu\u00f4n th\u00e9p. Ri\u00eang \u0111\u1ed1i v\u1edbi c\u00f4ppha tre ph\u1ee7 film c\u00f3 b\u1ec1 m\u1eb7t nh\u1eb5n b\u00f3ng th\u00ec kh\u00f4ng c\u1ea7n v\u1ec7 sinh<\/p>\n
![](\"http:\/\/vxd.com.vn\/wp-content\/uploads\/2016\/10\/297-truong-cong-dinh.jpg\")
C\u00f4ng t\u00e1c va\u0301n khu\u00f4n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u01b0 sau:
Chu\u1ea9n b\u1ecb:
– B\u1eadt m\u1ef1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed va\u0301n khu\u00f4n.
– B\u1ed1 tr\u00ed nh\u00e2n l\u1ef1c ph\u00fa h\u1ee3p, th\u1ef1c hi\u1ec7n theo \u0111\u00fang nhu c\u1ea7u c\u00f4ng vi\u1ec7c.
– V\u1ec7 sinh m\u1eb7t b\u1eb1ng n\u01a1i s\u1ebd l\u1eafp d\u1ef1ng va\u0301n khu\u00f4n.
C\u00f4ng t\u00e1c va\u0301n khu\u00f4n
C\u00e1n b\u1ed9 k\u1ef9 thu\u1eadt tr\u1ef1c ti\u1ebfp ch\u1ec9 \u0111\u1ea1o cho c\u00e1c t\u1ed5 tr\u01b0\u1edfng, ch\u1ee3 chuy\u00ean m\u00f4n th\u1ef1c hi\u1ec7n c\u00f4ng t\u00e1c va\u0301n khu\u00f4n, \u0111\u1ea3m b\u1ea3o th\u1eadt ch\u00ednh x\u00e1c theo y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt. Tr\u00e1nh t\u00ecnh tr\u1ea1ng \u0111\u00e3 l\u1eafp d\u1ef1ng xong va\u0301n khu\u00f4n ph\u1ea3i th\u00e1o d\u1ee1 d\u1ef1ng l\u1ea1i do kh\u00f4ng \u0111\u00f9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt.
Ti\u1ebfn h\u00e0nh l\u1eafp d\u1ef1ng va\u0301n khu\u00f4n theo b\u1ea3n v\u1ebd chi ti\u1ebft v\u00e0 ch\u1ec9 d\u1eabn c\u1ee7a c\u00e1n b\u1ed9 k\u1ef9 thu\u1eadt.
va\u0301n khu\u00f4n \u0111\u01b0\u1ee3c l\u1eafp d\u1ef1ng ph\u1ea3i v\u1eefng ch\u1eafc, neo ch\u1eb7t v\u00e0o nh\u1eefng \u0111i\u1ec3m c\u1ed1 \u0111\u1ecbnh, kh\u00f4ng \u0111\u1ec3 cho va\u0301n khu\u00f4n b\u1ecb x\u00ea d\u1ecbch bi\u1ebfn d\u1ea1ng trong qu\u00e1 tr\u00ecnh \u0111\u1ed5 b\u00ea t\u00f4ng.
\u2022 V\u1ec7 sinh va\u0301n khu\u00f4n s\u1ea1ch sau khi l\u1eafp d\u1ef1ng xong.
\u2022 C\u00e1n b\u1ed9 k\u1ef9 thu\u1eadt ph\u1ea3i nghi\u1ec7m thu c\u00f4ng t\u00e1c va\u0301n khu\u00f4n tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh c\u00f4ng t\u00e1c ti\u1ebfp theo.
\u2022 Va\u0301n khu\u00f4n ph\u1ea3i \u0111\u01b0\u1ee3c t\u01b0\u1edbi n\u01b0\u1edbc v\u1ec7 sinh tr\u01b0\u1edbc khi \u0111\u1ed5 b\u00ea t\u00f4ng.(\u0111\u1edbi v\u1edbi va\u0301n khu\u00f4n tre c\u00f3 th\u1ec3 b\u1ecf qua kh\u00e2u n\u00e0y)
L\u1eafp d\u1ef1ng va\u0301n khu\u00f4n
\u2022 B\u1ea3o d\u01b0\u1ee1ng, b\u1ea3o v\u1ec7 c\u00f4ng t\u00e1c va\u0301n khu\u00f4n.
\u2022 Va\u0301n khu\u00f4n sau khi \u0111\u01b0\u1ee3c l\u1eafp d\u1ef1ng xong n\u1ebfu ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u1ed5 b\u00ea t\u00f4ng th\u00ec s\u1ebd \u0111\u01b0\u1ee3c b\u1ea3o k\u1ef9 \u0111\u1ec3 tr\u00e1nh b\u1ecb x\u00ea d\u1ecbch.
Th\u00e1o d\u1ee1 va\u0301n khu\u00f4n
Va\u0301n khu\u00f4n \u0111\u00e0 gi\u00e1o ch\u1ec9 \u0111\u01b0\u1ee3c th\u00e1o d\u1ee1 khi b\u00ea t\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u01b0\u1eddng \u0111\u1ed9 c\u1ea7n thi\u1ebft \u0111\u1ec3 k\u1ebft c\u1ea5u ch\u1ecbu \u0111\u01b0\u1ee3c tr\u1ecdng l\u01b0\u1ee3ng b\u1ea3n th\u00e2n v\u00e0 c\u00e1c t\u1ea3i tr\u1ecdng t\u00e1c \u0111\u1ed9ng kh\u00e1c trong giai \u0111o\u1ea1n thi c\u00f4ng sau. Khi th\u00e1o d\u1ee1 va\u0301n khu\u00f4n, \u0111\u00e0 gi\u00e1o tr\u00e1nh g\u00e2y \u1ee9ng su\u1ea5t \u0111\u1ed9t ng\u1ed9t ho\u1eb7c va ch\u1ea1m m\u1ea1nh \u0111\u1ebfn k\u1ebft c\u1ea5u b\u00ea t\u00f4ng.
C\u00e1c b\u1ed9 ph\u1eadn va\u0301n khu\u00f4n, \u0111\u00e0 gi\u00e1o kh\u00f4ng c\u00f2n ch\u1ecbu l\u1ef1c sau khi b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u00f3ng r\u1eafn (va\u0301n khu\u00f4n th\u00e0nh d\u1ea7m, t\u01b0\u1eddng, c\u1ed9t) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00e1o d\u1ee1 khi b\u00ea t\u00f4ng \u0111\u1ea1t c\u01b0\u1eddng \u0111\u1ed9 tr\u00ean 50%daN\/cm2.
K\u1ebft c\u1ea5u \u00f4 v\u0103ng, c\u00f4ng x\u00f4n, s\u00ea n\u00f4 ch\u1ec9 \u0111\u01b0\u1ee3c th\u00e1o c\u1ed9t ch\u1ed1ng v\u00e0 va\u0301n khu\u00f4n \u0111\u00e1y khi c\u01b0\u1eddng \u0111\u1ed9 b\u00ea t\u00f4ng \u0111\u1ee7 m\u00e1c thi\u1ebft k\u1ebf.
Khi th\u00e1o d\u1ee1 va\u0301n khu\u00f4n \u0111\u00e0 gi\u00e1o \u1edf c\u00e1c t\u1ea5m s\u00e0n \u0111\u1ed5 b\u00ea t\u00f4ng to\u00e0n kh\u1ed1i c\u1ee7a nh\u00e0 nhi\u1ec1u t\u1ea7ng n\u00ean th\u1ef1c hi\u1ec7n nh\u01b0 sau:
-Gi\u1eef l\u1ea1i to\u00e0n b\u1ed9 \u0111\u00e0 gi\u00e1o v\u00e0 c\u1ed9t ch\u1ed1ng \u1edf t\u1ea5m s\u00e0n n\u1eb1m k\u1ec1 d\u01b0\u1edbi t\u1ea5m s\u00e0n s\u1eafp \u0111\u1ed5 b\u00ea t\u00f4ng
-Th\u00e1o d\u1ee1 t\u1eebng b\u1ed9 ph\u1eadn c\u1ed9t ch\u1ed1ng va\u0301n khu\u00f4n c\u1ee7a t\u1ea5m s\u00e0n d\u01b0\u1edbi n\u1eefa v\u00e0 gi\u1eef l\u1ea1i c\u1ed9t ch\u1ed1ng \u201can to\u00e0n\u201d c\u00e1ch nhau 3m d\u01b0\u1edbi c\u00e1c d\u1ea7m c\u00f3 nh\u1ecbp l\u1edbn h\u01a1n 4m.
\u0110\u1ed1i v\u1edbi va\u0301n khu\u00f4n \u0111\u00e0 gi\u00e1o ch\u1ecbu l\u1ef1c c\u1ee7a k\u1ebft c\u1ea5u ( \u0111\u00e1y d\u1ea7m, s\u00e0n, c\u1ed9t ch\u1ed1ng) n\u1ebfu kh\u00f4ng c\u00f3 c\u00e1c ch\u1ec9 d\u1eabn \u0111\u1eb7c bi\u1ec7t c\u1ee7a thi\u1ebft k\u1ebf th\u00ec \u0111\u01b0\u1ee3c th\u00e1o d\u1ee1 khi b\u00ea t\u00f4ng \u0111\u1ea1t c\u01b0\u1eddng \u0111\u1ed9 l\u00e0 50% (7 ng\u00e0y) v\u1edbi b\u1ea3n d\u1ea7m, v\u00f2m c\u00f3 kh\u1ea9u \u0111\u1ed9 nh\u1ecf h\u01a1n 2m, \u0111\u1ea1t c\u01b0\u1eddng \u0111\u1ed9 70% (10 ng\u00e0y) v\u1edbi b\u1ea3n, d\u1ea7m, v\u00f2m c\u00f3 kh\u1ea9u \u0111\u1ed9 t\u1eeb 2-8m, \u0111\u1ea1t c\u01b0\u1eddng \u0111\u1ed9 90% v\u1edbi b\u1ea3n d\u1ea7m, v\u00f2m c\u00f3 kh\u1ea9u \u0111\u1ed9 l\u1edbn h\u01a1n 8m.<\/p>","protected":false},"excerpt":{"rendered":"
C\u00d4NG T\u00c1C V\u00c1N KHU\u00d4N C\u00f4ng t\u00e1c va\u0301n khu\u00f4n l\u00e0 m\u1ed9t trong nh\u1eefng kh\u00e2u quan tr\u1ecdng quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng b\u00ea t\u00f4ng, h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a k\u1ebft c\u1ea5u. Va\u0301n khu\u00f4n s\u1eed d\u1ee5ng cho c\u00e1c c\u00f4ng t\u00e1c \u1edf ph\u1ea7n th\u00e2n l\u00e0 va\u0301n khu\u00f4n th\u00e9p, va\u0301n khu\u00f4n g\u1ed7 ho\u1eb7c c\u1ed1p pha tre, va\u0301n khu\u00f4n \u0111\u01b0\u1ee3c […]\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/posts\/900"}],"collection":[{"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/comments?post=900"}],"version-history":[{"count":1,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/posts\/900\/revisions"}],"predecessor-version":[{"id":901,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/posts\/900\/revisions\/901"}],"wp:attachment":[{"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/media?parent=900"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/categories?post=900"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/tags?post=900"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}