{"id":878,"date":"2017-04-10T07:55:20","date_gmt":"2017-04-10T00:55:20","guid":{"rendered":"http:\/\/vxd.com.vn\/?p=878"},"modified":"2017-04-10T07:58:33","modified_gmt":"2017-04-10T00:58:33","slug":"yeu-cau-va-ky-thuat-thi-cong-van-khuon","status":"publish","type":"post","link":"https:\/\/vxd.com.vn\/vi\/yeu-cau-va-ky-thuat-thi-cong-van-khuon\/","title":{"rendered":"Y\u00caU C\u1ea6U V\u00c0 K\u1ef8 THU\u1eacT THI C\u00d4NG V\u00c1N KHU\u00d4N"},"content":{"rendered":"

Y\u00caU C\u1ea6U V\u00c0 K\u1ef8 THU\u1eacT THI C\u00d4NG C\u1ed0P PHA, V\u00c1N KHU\u00d4N, GI\u00c0N GI\u00c1O<\/h2>\n

C\u1ed1p pha v\u00e0 gi\u00e0n gi\u00e1o \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng, \u1ed5n \u0111\u1ecbnh, d\u1ec5 th\u00e1o l\u1eafp, kh\u00f4ng g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c \u0111\u1eb7t c\u1ed1p th\u00e9p, \u0111\u1ed5 v\u00e0 \u0111\u1ea7m b\u00ea t\u00f4ng. C\u1ed1p pha ph\u1ea3i \u0111\u01b0\u1ee3c gh\u00e9p k\u00edn, kh\u00edt \u0111\u1ec3 kh\u00f4ng l\u00e0m m\u1ea5t n\u01b0\u1edbc xim\u0103ng khi \u0111\u1ed5 v\u00e0 \u0111\u1ea7m b\u00ea t\u00f4ng, \u0111\u1ed3ng th\u1eddi b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c b\u00ea t\u00f4ng m\u1edbi \u0111\u1ed5 d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a th\u1eddi ti\u1ebft. C\u1ed1p pha d\u1ea7m, s\u00e0n \u0111\u01b0\u1ee3c gh\u00e9p tr\u01b0\u1edbc l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p, c\u1ed1p pha c\u1ed9t \u0111\u01b0\u1ee3c gh\u00e9p sau khi l\u1eafp \u0111\u1eb7t c\u1ed1t th\u00e9p.<\/p>\n

1. \u0110\u1ed1i v\u1edbi v\u00e1n khu\u00f4n m\u00f3ng c\u1ed9t<\/h4>\n

– V\u00e1n khu\u00f4n \u0111\u00e0i c\u1ecdc v\u00e0 d\u1ea7m m\u00f3ng \u0111\u01b0\u1ee3c l\u1eafp sau khi \u0111\u00e3 l\u1eafp d\u1ef1ng c\u1ed1t th\u00e9p
– C\u0103ng d\u00e2y theo tr\u1ee5c tim c\u1ed9t theo 2 ph\u01b0\u01a1ng \u0111\u1ec3 l\u00e0m chu\u1ea9n .
– Gh\u00e9p v\u00e0n khu\u00f4n theo \u0111\u00fang k\u00edch th\u01b0\u1edbc c\u1ee7a t\u1eebng m\u00f3ng c\u1ee5 th\u1ec3 .
– X\u00e1c \u0111\u1ecbnh trung \u0111i\u1ec3m c\u1ee7a t\u1eebng c\u1ea1nh v\u00e1n khu\u00f4n, qua c\u00e1c v\u1ecb tr\u00ed \u0111\u00f3 \u0111\u00f3ng c\u00e1c n\u1eb9p g\u1ed7 vu\u00f4ng g\u00f3c v\u1edbi nhau \u0111\u1ec3 gia c\u01b0\u1eddng.
– C\u1ed1 \u0111\u1ecbnh v\u00e1n khu\u00f4n b\u1eb1ng c\u00e1c thanh ch\u1ed1ng c\u1ecdc c\u1eeb .<\/p>\n

2. \u0110\u1ed1i v\u1edbi v\u00e1n khu\u00f4n c\u1ed9t.<\/h4>\n

– 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 neochoc\u1ed1p pha 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.<\/p>\n

* C\u00c1CH L\u1eaeP GH\u00c9P:<\/h4>\n

+ 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.<\/p>\n

3. \u0110\u1ed1i v\u1edbi v\u00e1n khu\u00f4n d\u1ea7m<\/h4>\n

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\u1ecdctheotim 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\u1ea7mcho\u0111\u00fang thi\u1ebft k\u1ebf.<\/p>\n

4. \u0110\u1ed1i v\u1edbi v\u00e1n khu\u00f4n s\u00e0n<\/h4>\n

– 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 g\u1ed7.
-Theochu 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.<\/p>\n

5. N\u1ed9i dung nghi\u1ec7m thu v\u00e1n khu\u00f4n sau khi l\u1eafp \u0111\u1eb7t<\/h4>\n

– Ki\u1ec3m tra h\u00ecnh d\u00e1ng k\u00edch th\u01b0\u1edbctheoB\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.Kinh nghi\u1ec7m l\u00e0m nh\u00e0
– Ki\u1ec3m tra l\u1edbp ch\u1ed1ng d\u00ednh, ki\u1ec3m tra v\u1ec7 sinh c\u1ed1p pha.<\/p>\n

6. C\u00f4ng t\u00e1c th\u00e1o d\u1ee1 v\u00e1n khu\u00f4n<\/h4>\n

– C\u1ed1p pha gi\u00e0n 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 c\u1ed1p pha, \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 c\u1ed1p pha, gi\u00e0n gi\u00e1o kh\u00f4ng c\u00f2n ch\u1ecbu l\u1ef1c sau khi b\u00ea t\u00f4ng \u0111\u00e3 \u0111\u00f3ng r\u1eafn (c\u1ed1p pha 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 c\u1ed1p pha \u0111\u00e1y khi c\u01b0\u1eddng \u0111\u1ed9 b\u00ea t\u00f4ng \u0111\u1ee7 m\u00e1c thi\u1ebft k\u1ebf.<\/p>\n

KHI TH\u00c1O D\u1ee0 C\u1ed0P PHA GI\u00c0N GI\u00c1O \u1ede C\u00c1C T\u1ea4M S\u00c0N \u0110\u1ed4 B\u00ca T\u00d4NG TO\u00c0N KH\u1ed0I C\u1ee6A NH\u00c0 NHI\u1ec0U T\u1ea6NG N\u00caN TH\u1ef0C HI\u1ec6N NH\u01af SAU:<\/p>\n

+ 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 c\u1ed1p pha 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 c\u1ed1p pha gi\u00e0n 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":"

Y\u00caU C\u1ea6U V\u00c0 K\u1ef8 THU\u1eacT THI C\u00d4NG C\u1ed0P PHA, V\u00c1N KHU\u00d4N, GI\u00c0N GI\u00c1O C\u1ed1p pha v\u00e0 gi\u00e0n gi\u00e1o \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 thi c\u00f4ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 c\u1ee9ng, \u1ed5n \u0111\u1ecbnh, d\u1ec5 th\u00e1o l\u1eafp, kh\u00f4ng g\u00e2y kh\u00f3 kh\u0103n cho vi\u1ec7c \u0111\u1eb7t c\u1ed1p th\u00e9p, \u0111\u1ed5 v\u00e0 \u0111\u1ea7m b\u00ea t\u00f4ng. C\u1ed1p pha ph\u1ea3i \u0111\u01b0\u1ee3c gh\u00e9p k\u00edn, kh\u00edt […]\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\/878"}],"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=878"}],"version-history":[{"count":2,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/posts\/878\/revisions"}],"predecessor-version":[{"id":880,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/posts\/878\/revisions\/880"}],"wp:attachment":[{"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/media?parent=878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/categories?post=878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vxd.com.vn\/vi\/wp-json\/wp\/v2\/tags?post=878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}