{"id":2914,"date":"2026-06-25T11:57:03","date_gmt":"2026-06-25T03:57:03","guid":{"rendered":"https:\/\/soilimprovementsz.com\/?p=2914"},"modified":"2026-06-25T12:04:17","modified_gmt":"2026-06-25T04:04:17","slug":"vibrocompaction-construction-technology-full-densification-process-of-sandy-soil-foundation","status":"publish","type":"post","link":"https:\/\/soilimprovementsz.com\/vi\/vibrocompaction-construction-technology-full-densification-process-of-sandy-soil-foundation\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 thi c\u00f4ng Vibrocompaction \u2013 Qu\u00e1 tr\u00ecnh \u0111\u00f3ng r\u1eafn \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a n\u1ec1n \u0111\u1ea5t c\u00e1t"},"content":{"rendered":"

Trong k\u1ef9 thu\u1eadt c\u1ea3i thi\u1ec7n n\u1ec1n \u0111\u1ea5t, vibrocompaction, c\u00f2n g\u1ecdi l\u00e0 vibroflotation kh\u00f4ng c\u1ea7n v\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y, l\u00e0 c\u00f4ng ngh\u1ec7 c\u1ed1t l\u00f5i \u0111\u1ec3 x\u1eed l\u00fd \u0111\u1ea5t c\u00e1t l\u1ecfng l\u1ebbo ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng l\u00fan, t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i v\u00e0 n\u00e2ng cao kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i.<\/p>\n\n\n\n

Kh\u00e1c v\u1edbi vibroflotation c\u1ed9t \u0111\u00e1 y\u00eau c\u1ea7u \u0111\u1ed5 \u0111\u1ea7y \u0111\u00e1 nghi\u1ec1n, \u0111\u1eb7c \u0111i\u1ec3m l\u1edbn nh\u1ea5t c\u1ee7a vibroflotation kh\u00f4ng c\u1ea7n v\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y l\u00e0 kh\u00f4ng s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u b\u1ed5 sung. N\u00f3 ch\u1ec9 d\u1ef1a v\u00e0o phun n\u01b0\u1edbc \u00e1p l\u1ef1c cao v\u00e0 rung t\u1ea7n s\u1ed1 cao \u0111\u1ec3 l\u00e0m l\u1ecfng v\u00e0 t\u1ed5 h\u1ee3p l\u1ea1i c\u00e1t t\u1ea1i ch\u1ed7 \u0111\u1ec3 \u0111\u00f3ng c\u1ecdc. V\u1edbi hi\u1ec7u qu\u1ea3 thi c\u00f4ng cao h\u01a1n v\u00e0 chi ph\u00ed th\u1ea5p h\u01a1n, \u0111\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd \u01b0u ti\u00ean cho n\u1ec1n c\u00e1t n\u1ea1p th\u1ee7y l\u1ef1c v\u00e0 n\u1ec1n c\u00e1t trung b\u00ecnh-th\u00f4.<\/p>\n\n\n\n

\"D\u1ecbch<\/figure>\n\n\n\n

I. Nguy\u00ean l\u00fd l\u00e0m vi\u1ec7c c\u1ed1t l\u00f5i<\/strong><\/p>\n\n\n\n

N\u00f3i \u0111\u01a1n gi\u1ea3n: Khoan phun, l\u00e0m l\u1ecfng b\u1eb1ng rung, \u0111\u00f3ng c\u1ecdc t\u1ea1i ch\u1ed7, l\u00fan v\u00e0 c\u00f4 \u0111\u1eb7c.<\/p>\n\n\n\n

V\u1edbi rung t\u1ea7n s\u1ed1 cao t\u1eeb vibroflotator k\u1ebft h\u1ee3p v\u1edbi d\u00f2ng n\u01b0\u1edbc \u00e1p l\u1ef1c cao, c\u00e1t l\u1ecfng l\u1ebbo ng\u1eadp n\u01b0\u1edbc d\u01b0\u1edbi \u0111\u1ea5t ngay l\u1eadp t\u1ee9c tr\u1edf n\u00ean l\u1ecfng. C\u00e1c kho\u1ea3ng tr\u1ed1ng trong \u0111\u1ea5t co l\u1ea1i nhanh ch\u00f3ng v\u00e0 c\u00e1c h\u1ea1t s\u1eafp x\u1ebfp l\u1ea1i \u0111\u1ec3 \u0111\u00f3ng c\u1ecdc l\u1eabn nhau. Sau khi \u00e1p l\u1ef1c n\u01b0\u1edbc trong c\u00e1c l\u1ed7 r\u1ed7ng d\u01b0 gi\u1ea3m xu\u1ed1ng, m\u1eadt \u0111\u1ed9 n\u1ec1n m\u00f3ng t\u1ed5ng th\u1ec3 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n r\u00f5 r\u1ec7t, gi\u1ea3i quy\u1ebft tri\u1ec7t \u0111\u1ec3 hai m\u1ed1i nguy hi\u1ec3m ch\u00ednh c\u1ee7a \u0111\u1ea5t c\u00e1t: l\u00fan sau x\u00e2y d\u1ef1ng v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng l\u00fan do \u0111\u1ed9ng \u0111\u1ea5t.<\/p>\n\n\n\n

C\u00e1c l\u1edbp \u0111\u1ea5t ph\u00f9 h\u1ee3p (\u0110i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb)<\/strong><\/p>\n\n\n\n

\u2705 \u1ee8ng d\u1ee5ng t\u1ed1i \u01b0u: C\u00e1t trung b\u00ecnh-th\u00f4, c\u00e1t n\u1ea1p th\u1ee7y l\u1ef1c l\u1ecfng l\u1ebbo; h\u00e0m l\u01b0\u1ee3ng \u0111\u1ea5t s\u00e9t \uff1c15%, nhi\u1ec1u n\u01b0\u1edbc ng\u1ea7m v\u00e0 kh\u1ea3 n\u0103ng th\u1ea5m t\u1ed1t<\/p>\n\n\n\n

\u26a0\ufe0f \u1ee8ng d\u1ee5ng \u0111i\u1ec1u ki\u1ec7n: C\u00e1t m\u1ecbn s\u00e9t (ki\u1ec3m tra vibroflotation th\u1eed nghi\u1ec7m b\u1eaft bu\u1ed9c khi h\u00e0m l\u01b0\u1ee3ng \u0111\u1ea5t s\u00e9t dao \u0111\u1ed9ng t\u1eeb 10% \u0111\u1ebfn 15%)<\/p>\n\n\n\n

\u274c \u1ee8ng d\u1ee5ng b\u1ecb c\u1ea5m: C\u00e1t s\u00e9t, \u0111\u1ea5t s\u00e9t s\u1ec1n s\u1ec7t, \u0111\u1ea5t s\u00e9t m\u1ec1m v\u00e0 \u0111\u1ea5t d\u00ednh c\u00f3 kh\u1ea3 n\u0103ng th\u1ea5m th\u1ea5p<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

II. Thi\u1ebft b\u1ecb thi c\u00f4ng h\u1ed7 tr\u1ee3<\/strong><\/p>\n\n\n\n

B\u1ed9 thi\u1ebft b\u1ecb ho\u00e0n ch\u1ec9nh c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m l\u1eafp r\u00e1p \u0111\u01a1n gi\u1ea3n v\u00e0 \u0111a d\u1ee5ng m\u1ea1nh m\u1ebd:<\/p>\n\n\n\n

B\u1ed9 g\u1ed3m c\u1ea7n c\u1ea9u di \u0111\u1ed9ng, vibroflotator c\u00f4ng su\u1ea5t cao (75kW \/ 100kW \/ 180kW), m\u00e1y b\u01a1m n\u01b0\u1edbc \u00e1p l\u1ef1c cao, t\u1ee7 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n th\u00f4ng minh, th\u01b0\u1edbc \u0111o, thi\u1ebft b\u1ecb \u0111o \u0111\u1ed9 cao v\u00e0 tr\u1ea1m t\u1ed5ng h\u1ee3p.<\/p>\n\n\n\n

C\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ecdc t\u1eeb t\u1ee7 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ec9 s\u1ed1 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ea1i ch\u1ed7 c\u1ed1t l\u00f5i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 tr\u1ef1c ti\u1ebfp xem \u0111\u1ea5t c\u00f3 \u0111\u1ea1t ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf hay kh\u00f4ng.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

III. Quy tr\u00ecnh thi c\u00f4ng ti\u00eau chu\u1ea9n \u0111\u1ea7y \u0111\u1ee7<\/strong><\/p>\n\n\n\n

1. Chu\u1ea9n b\u1ecb tr\u01b0\u1edbc thi c\u00f4ng<\/strong><\/p>\n\n\n\n

Tr\u01b0\u1edbc ti\u00ean, d\u1ecdn d\u1eb9p v\u00e0 san b\u1eb1ng m\u1eb7t b\u1eb1ng thi c\u00f4ng: lo\u1ea1i b\u1ecf c\u1ecf d\u1ea1i, r\u00e1c th\u1ea3i x\u00e2y d\u1ef1ng v\u00e0 l\u1edbp ph\u00f9 sa m\u1eb7t. \u0110\u1eafp \u0111\u1ea5t v\u00e0 san b\u1eb1ng c\u00e1c khu v\u1ef1c th\u1ea5p, \u0111\u00e0o m\u01b0\u01a1ng tho\u00e1t n\u01b0\u1edbc m\u1eb7t \u0111\u1ec3 tr\u00e1nh \u0111\u1ecdng n\u01b0\u1edbc l\u00e0m m\u1ec1m \u0111\u1ea5t n\u1ec1n v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng thi c\u00f4ng.<\/p>\n\n\n\n

Ti\u1ebfp theo, ti\u1ebfn h\u00e0nh kh\u1ea3o s\u00e1t b\u1ed1 tr\u00ed ch\u00ednh x\u00e1c qua tr\u1ea1m t\u1ed5ng h\u1ee3p \u0111\u1ec3 \u0111\u00e1nh d\u1ea5u v\u1ecb tr\u00ed l\u1ed7 vibroflotation, th\u01b0\u1eddng s\u1eafp x\u1ebfp theo h\u00ecnh tam gi\u00e1c \u0111\u1ec1u v\u1edbi kho\u1ea3ng c\u00e1ch l\u1ed7 ti\u00eau chu\u1ea9n t\u1eeb 2.0\u20133.0 m. C\u00e1c c\u1ecdc \u0111\u00e1nh d\u1ea5u ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 ph\u00ea duy\u1ec7t b\u1edfi gi\u00e1m s\u00e1t vi\u00ean tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u thi c\u00f4ng.<\/p>\n\n\n\n

Th\u1eed nghi\u1ec7m vibroflotation l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng kh\u00f4ng th\u1ec3 thi\u1ebfu. Ch\u1ecdn c\u00e1c khu v\u1ef1c ti\u00eau bi\u1ec3u t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u0111\u1ec3 th\u1ef1c hi\u1ec7n th\u1eed vibroflotation, v\u00e0 x\u00e1c nh\u1eadn n\u0103m th\u00f4ng s\u1ed1 c\u1ed1t l\u00f5i ph\u00f9 h\u1ee3p v\u1edbi l\u1edbp \u0111\u1ea5t \u0111\u1ecba ph\u01b0\u01a1ng: \u00e1p l\u1ef1c n\u01b0\u1edbc, t\u1ed1c \u0111\u1ed9 th\u00e2m nh\u1eadp, d\u00f2ng \u0111i\u1ec7n \u0111\u00f3ng c\u1ecdc, th\u1eddi gian gi\u1eef rung c\u1eaft \u0111o\u1ea1n v\u00e0 kho\u1ea3ng c\u00e1ch n\u00e2ng. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y s\u1ebd l\u00e0 ti\u00eau chu\u1ea9n duy nh\u1ea5t cho s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n\n\n\n

2. \u0110\u1ecbnh v\u1ecb thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c<\/strong><\/p>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh c\u1ea7n c\u1ea9u \u0111\u1ec3 c\u0103n ch\u1ec9nh vibroflotator th\u1eb3ng \u0111\u1ee9ng v\u1edbi trung t\u00e2m l\u1ed7 khoan, ki\u1ec3m so\u00e1t nghi\u00eang l\u1ec7ch theo chi\u1ec1u d\u1ecdc \u22641.5%. K\u1ebft n\u1ed1i ngu\u1ed3n n\u01b0\u1edbc v\u00e0 ngu\u1ed3n \u0111i\u1ec7n, hi\u1ec7u ch\u1ec9nh \u0111\u1ecdc s\u1ed1 c\u1ee7a thi\u1ebft b\u1ecb v\u1ec1 zero, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 gi\u00e1m s\u00e1t ch\u00ednh x\u00e1c d\u1eef li\u1ec7u.<\/p>\n\n\n\n

3. Khoan b\u1eb1ng tia n\u01b0\u1edbc \u00e1p l\u1ef1c cao & Xuy\u00ean qua \u0111\u1ea5t<\/strong><\/p>\n\n\n\n

Th\u1ef1c hi\u1ec7n theo tr\u00ecnh t\u1ef1 v\u1eadn h\u00e0nh: b\u1eadt ngu\u1ed3n cung c\u1ea5p n\u01b0\u1edbc tr\u01b0\u1edbc, sau \u0111\u00f3 k\u00edch ho\u1ea1t rung \u0111\u1ed9ng. D\u1ef1a v\u00e0o d\u00f2ng n\u01b0\u1edbc \u00e1p l\u1ef1c cao \u0111\u1ec3 gi\u1ea3m ma s\u00e1t v\u00e0 rung t\u1ea7n s\u1ed1 cao \u0111\u1ec3 c\u1eaft \u0111\u1ea5t, gi\u00fap \u0111\u1ea9y vibroflotator xu\u1ed1ng v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u1ec1u \u0111\u1eb7n.<\/p>\n\n\n\n

T\u1ed1c \u0111\u1ed9 xuy\u00ean th\u1ea5u ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1eeb 0.5\u20132.0 m\/ph\u00fat. C\u1ea7n ch\u1eadm h\u01a1n \u0111\u1ec3 xuy\u00ean qua c\u00e1c l\u1edbp \u0111\u1ea5t l\u1ecfng h\u01a1n nh\u1eb1m tr\u00e1nh l\u1ec7ch l\u1ed7 v\u00e0 g\u00e2y x\u00e1o tr\u1ed9n \u0111\u1ea5t qu\u00e1 m\u1ee9c. \u0110\u1ed1i v\u1edbi c\u00e1c l\u1edbp c\u1ee9ng c\u1ee5c b\u1ed9, t\u0103ng \u00e1p l\u1ef1c n\u01b0\u1edbc v\u1eeba ph\u1ea3i \u0111\u1ec3 h\u1ed7 tr\u1ee3 xuy\u00ean th\u1ea5u; kh\u00f4ng \u0111\u01b0\u1ee3c \u00e9p xu\u1ed1ng b\u1eb1ng \u00e1p l\u1ef1c c\u01b0\u1ee1ng b\u1ee9c \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng qu\u00e1 t\u1ea3i thi\u1ebft b\u1ecb.<\/p>\n\n\n\n

Sau khi vibroflotator \u0111\u1ea1t \u0111\u1ed9 cao \u0111\u00e1y thi\u1ebft k\u1ebf \u0111\u1ec3 c\u1ea3i thi\u1ec7n, xuy\u00ean th\u1ea5u v\u01b0\u1ee3t qu\u00e1 0.3\u20130.5 m, sau \u0111\u00f3 \u0111\u00f3ng van phun n\u01b0\u1edbc. Gi\u1eef rung t\u1ea1i \u0111\u00e1y l\u1ed7 trong 30\u201360 gi\u00e2y cho \u0111\u1ebfn khi d\u00f2ng \u0111i\u1ec7n v\u1eadn h\u00e0nh \u1ed5n \u0111\u1ecbnh \u1edf d\u00f2ng \u0111i\u1ec7n n\u00e9n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn trong c\u00e1c th\u1eed nghi\u1ec7m, tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u n\u00e9n n\u00e2ng l\u00ean.<\/p>\n\n\n\n

4. N\u00e2ng v\u00e0 n\u00e9n theo t\u1eebng \u0111o\u1ea1n (Quy tr\u00ecnh l\u00e0m vi\u1ec7c ch\u00ednh)<\/strong><\/p>\n\n\n\n

B\u1ea3n ch\u1ea5t c\u1ee7a vibroflotation kh\u00f4ng d\u00f9ng v\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y: kh\u00f4ng l\u1ea5p \u0111\u1ea7y v\u1eadt li\u1ec7u, n\u00e2ng theo \u0111o\u1ea1n, gi\u1eef rung theo \u0111o\u1ea1n v\u00e0 n\u00e9n t\u1eebng l\u1edbp m\u1ed9t.<\/p>\n\n\n\n

Ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 n\u00e2ng vibroflotator t\u1eeb 0.3\u20131.0 m\/ph\u00fat. D\u1eebng n\u00e2ng m\u1ed7i 0.3\u20130.5 m (kho\u1ea3ng c\u00e1ch n\u00e9n) v\u00e0 duy tr\u00ec rung li\u00ean t\u1ee5c t\u1ea1i ch\u1ed7 trong 30\u201360 gi\u00e2y. Gi\u00e1m s\u00e1t d\u00f2ng \u0111i\u1ec7n t\u1ee7 \u0111i\u1ec7n trong su\u1ed1t qu\u00e1 tr\u00ecnh; ch\u1ec9 c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c n\u00e2ng l\u00ean sau khi d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111o\u1ea1n \u0111\u1ea5t hi\u1ec7n t\u1ea1i \u1ed5n \u0111\u1ecbnh tr\u00ean ti\u00eau chu\u1ea9n n\u00e9n quy \u0111\u1ecbnh. L\u1eb7p l\u1ea1i cho \u0111\u1ebfn khi vibroflotator \u0111\u01b0\u1ee3c n\u00e2ng ra kh\u1ecfi m\u1eb7t \u0111\u1ea5t \u0111\u1ec3 ho\u00e0n th\u00e0nh m\u1ed9t l\u1ed7 khoan.<\/p>\n\n\n\n

5. Vibroflotation th\u1ee9 c\u1ea5p theo v\u00f9ng \u0111\u1ec3 gia c\u1ed1 (T\u00f9y ch\u1ecdn)<\/strong><\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c l\u1edbp c\u00e1t l\u1ecfng c\u1ef1c k\u1ef3 l\u1ecfng l\u1ebbo t\u1ea1i ch\u1ed7, th\u1ef1c hi\u1ec7n n\u00e9n th\u1ee9 c\u1ea5p b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p vibroflotation qua c\u00e1c l\u1ed7 xen k\u1ebd sau khi ho\u00e0n th\u00e0nh x\u00e2y d\u1ef1ng to\u00e0n b\u1ed9 khu v\u1ef1c \u0111\u1ec3 lo\u1ea1i b\u1ecf c\u00e1c v\u00f9ng y\u1ebfu trong n\u00e9n v\u00e0 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t n\u1ec1n m\u00f3ng \u0111\u1ed3ng \u0111\u1ec1u.<\/p>\n\n\n\n

6. X\u1eed l\u00fd ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t<\/strong><\/p>\n\n\n\n

Sau khi ho\u00e0n th\u00e0nh t\u1ea5t c\u1ea3 c\u00e1c c\u00f4ng tr\u00ecnh vibroflotation, san b\u1eb1ng v\u00e0 \u0111\u00f3ng c\u1ecdc b\u1eb1ng m\u00e1y \u0111\u1ea7m to\u00e0n b\u1ed9 khu v\u1ef1c, sau \u0111\u00f3 tr\u1ea3i l\u1edbp m\u00f3ng \u0111\u00e1 nghi\u1ec1n x\u1ebfp theo c\u1ea5p d\u00e0y 300\u2013500 mm tr\u00ean b\u1ec1 m\u1eb7t. N\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 l\u1edbp tho\u00e1t n\u01b0\u1edbc ngang, ph\u00e2n t\u00e1n \u1ee9ng su\u1ea5t n\u1ec1n v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 r\u00f2 r\u1ec9 c\u00e1t m\u1eb7t.<\/p>\n\n\n\n

IV. C\u00e1c th\u00f4ng s\u1ed1 ki\u1ec3m so\u00e1t ch\u00ednh t\u1ea1i c\u00f4ng tr\u01b0\u1eddng (Tham kh\u1ea3o th\u1ef1c t\u1ebf)<\/strong><\/p>\n\n\n\n

\u2705 \u00c1p l\u1ef1c cung c\u1ea5p n\u01b0\u1edbc: 200\u2013600 kPa<\/p>\n\n\n\n

\u2705 T\u1ed1c \u0111\u1ed9 xuy\u00ean th\u1ea5u: 0.5\u20132.0 m\/ph\u00fat<\/p>\n\n\n\n

\u2705 T\u1ed1c \u0111\u1ed9 n\u00e2ng: 0.3\u20131.0 m\/ph\u00fat<\/p>\n\n\n\n

\u2705 Kho\u1ea3ng c\u00e1ch n\u00e9n m\u1ed7i l\u1ea7n n\u00e2ng: 0.3\u20130.5 m<\/p>\n\n\n\n

\u2705 Th\u1eddi gian gi\u1eef rung theo \u0111o\u1ea1n: 30\u201360 gi\u00e2y<\/p>\n\n\n\n

\u2705 Ti\u00eau chu\u1ea9n ch\u1ea5p nh\u1eadn ch\u1ea5t l\u01b0\u1ee3ng: D\u00f2ng \u0111i\u1ec7n v\u1eadn h\u00e0nh \u2265 d\u00f2ng \u0111i\u1ec7n n\u00e9n x\u00e1c nh\u1eadn qua th\u1eed nghi\u1ec7m (ch\u1ec9 s\u1ed1 ch\u1ea5p nh\u1eadn l\u00f5i)<\/p>\n\n\n\n

V. Ti\u00eau chu\u1ea9n Ki\u1ec3m tra Ch\u1ea5t l\u01b0\u1ee3ng & Ch\u1ea5p nh\u1eadn<\/strong><\/p>\n\n\n\n

Theo d\u00f5i to\u00e0n di\u1ec7n trong qu\u00e1 tr\u00ecnh thi c\u00f4ng: Ghi l\u1ea1i \u0111\u1ed9 s\u00e2u thi c\u00f4ng, \u00e1p l\u1ef1c n\u01b0\u1edbc, d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng, th\u1eddi gian gi\u1eef rung v\u00e0 c\u00e1c d\u1eef li\u1ec7u kh\u00e1c t\u1eebng l\u1ed7, l\u01b0u tr\u1eef t\u1ea5t c\u1ea3 t\u00e0i li\u1ec7u \u0111\u1ed3ng b\u1ed9 nh\u01b0 h\u1ed3 s\u01a1 nghi\u1ec7m thu.<\/p>\n\n\n\n

Ki\u1ec3m tra sau thi c\u00f4ng tr\u1ec5: Th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m xuy\u00ean ti\u00eau chu\u1ea9n (SPT) v\u00e0 th\u1eed nghi\u1ec7m xuy\u00ean c\u1ecdc (CPT) sau 7\u201314 ng\u00e0y \u0111\u1ec3 cho ph\u00e9p ti\u00eau hao ho\u00e0n to\u00e0n \u00e1p l\u1ef1c n\u01b0\u1edbc trong l\u1ed7. X\u00e1c minh \u0111\u1ed9 \u0111\u1eb7c t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a \u0111\u1ea5t, kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c c\u1ee7a m\u00f3ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u00fan c\u1ee7a c\u00e1t ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u thi\u1ebft k\u1ebf.<\/p>\n\n\n\n

VI. C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn t\u1ea1i c\u00f4ng tr\u01b0\u1eddng & Bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c<\/strong><\/p>\n\n\n\n

Th\u00e2m nh\u1eadp qu\u00e1 nhanh & d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng th\u1ea5p: Ch\u1ec9 ra c\u00e1t t\u1ef1 nhi\u00ean c\u1ef1c k\u1ef3 l\u1ecfng l\u1ebbo. Gi\u1ea3m t\u1ed1c \u0111\u1ed9 n\u00e2ng v\u00e0 k\u00e9o d\u00e0i th\u1eddi gian gi\u1eef rung \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 n\u00e9n ch\u1eb7t.<\/p>\n\n\n\n

Th\u00e2m nh\u1eadp kh\u00f3 kh\u0103n & qu\u00e1 t\u1ea3i d\u00f2ng \u0111i\u1ec7n \u0111\u1ed9t ng\u1ed9t: G\u1eb7p l\u1edbp \u0111\u1ea5t \u0111\u1eb7c c\u1ee9ng. T\u1ea1m th\u1eddi n\u00e2ng \u00e1p l\u1ef1c n\u01b0\u1edbc \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u1eaft \u0111\u1ea5t; c\u1ea5m \u00e9p \u00e1p l\u1ef1c xu\u1ed1ng m\u1ed9t c\u00e1ch c\u01b0\u1ee1ng b\u1ee9c.<\/p>\n\n\n\n

R\u00f2 r\u1ec9 c\u00e1t m\u1eb7t \u0111\u1ea5t nghi\u00eam tr\u1ecdng & n\u01b0\u1edbc phun tr\u00e0o: Gi\u1ea3m \u00e1p l\u1ef1c cung c\u1ea5p n\u01b0\u1edbc v\u00e0 ch\u1eadm t\u1ed1c \u0111\u1ed9 th\u00e2m nh\u1eadp \u0111\u1ec3 gi\u1ea3m x\u00f3i m\u00f2n b\u00ean c\u1ea1nh th\u00e0nh l\u1ed7, tr\u00e1nh s\u1ee5p l\u00fan l\u1ed7 v\u00e0 tr\u00e0o c\u00e1t ng\u01b0\u1ee3c.<\/p>\n\n\n\n

K\u1ebft lu\u1eadn<\/strong><\/p>\n\n\n\n

Vibrocompaction kh\u00f4ng d\u00f9ng v\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y c\u00f3 l\u1ee3i th\u1ebf ch\u00ednh l\u00e0 chi ph\u00ed th\u1ea5p, hi\u1ec7u qu\u1ea3 cao, kh\u00f4ng c\u1ea7n v\u1eadt li\u1ec7u l\u1ea5p \u0111\u1ea7y v\u00e0 g\u00e2y \u00edt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1eb7t \u0111\u1ea5t, tr\u1edf th\u00e0nh c\u00f4ng ngh\u1ec7 gi\u1ea3m l\u00fan ch\u00ednh cho \u0111\u1ea5t c\u00e1t v\u00e0 \u0111\u1ea5t n\u1ea1o v\u00e9t b\u1eb1ng th\u1ee7y l\u1ef1c.<\/p>\n\n\n\n

Ch\u1ea5t l\u01b0\u1ee3ng thi c\u00f4ng t\u1ea1i c\u00f4ng tr\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ho\u00e0n to\u00e0n b\u1eb1ng c\u00e1ch qu\u1ea3n l\u00fd b\u1ed1n y\u1ebfu t\u1ed1 quan tr\u1ecdng: tham s\u1ed1 th\u1eed nghi\u1ec7m, th\u1eddi gian gi\u1eef rung, d\u00f2ng \u0111i\u1ec7n n\u00e9n ch\u1eb7t v\u00e0 kho\u1ea3ng c\u00e1ch n\u00e2ng.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n c\u00f3 nhu c\u1ea7u c\u1ea3i thi\u1ec7n n\u1ec1n \u0111\u1ea5t cho d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh, vui l\u00f2ng li\u00ean h\u1ec7 SUNZO. Ch\u00fang t\u00f4i s\u1ebd cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p t\u00f9y ch\u1ec9nh ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n d\u1ef1 \u00e1n \u0111\u1ec3 h\u1ed7 tr\u1ee3 ti\u1ebfn \u0111\u1ed9 v\u00e0 an to\u00e0n d\u1ef1 \u00e1n.<\/p>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

In ground improvement engineering, vibrocompaction, commonly known as filler-free vibroflotation, serves as the core technology for loose sandy ground to 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