![\"\u1ea2nh](\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/anh_huong_cua_su_gian_no_nhiet_len_cac_cong_trinh_xay_dung.png\")
<\/p>\n\u1ea2nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t l\u00ean c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng: \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong thi\u1ebft k\u1ebf v\u00e0 x\u00e2y d\u1ef1ng \u0111\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng do bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p>\n
<\/p>\n
S\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt li\u1ec7u thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd v\u00e0 thi\u1ebft k\u1ebf \u0111\u00fang c\u00e1ch.<\/p>\n
Khi v\u1eadt li\u1ec7u ch\u1ecbu t\u00e1c \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 cao, c\u00e1c nguy\u00ean t\u1eed v\u00e0 ph\u00e2n t\u1eed b\u00ean trong v\u1eadt li\u1ec7u chuy\u1ec3n \u0111\u1ed9ng nhanh h\u01a1n v\u00e0 \u0111\u1ea9y ra xa nhau, d\u1eabn \u0111\u1ebfn s\u1ef1 gi\u00e3n n\u1edf. Ng\u01b0\u1ee3c l\u1ea1i, khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, c\u00e1c nguy\u00ean t\u1eed v\u00e0 ph\u00e2n t\u1eed chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm l\u1ea1i v\u00e0 thu nh\u1ecf l\u1ea1i, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng co r\u00fat.<\/p>\n
H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng gi\u00fap \u0111o l\u01b0\u1eddng m\u1ee9c \u0111\u1ed9 thay \u0111\u1ed5i k\u00edch th\u01b0\u1edbc c\u1ee7a v\u1eadt li\u1ec7u d\u01b0\u1edbi t\u00e1c d\u1ee5ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9. C\u00f4ng th\u1ee9c t\u00ednh h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t theo chi\u1ec1u d\u00e0i l\u00e0:<\/p>\n
\\( \\Delta L = \\alpha L \\Delta T \\)<\/p>\n
S\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u00f3 th\u1ec3 g\u00e2y ra nh\u1eefng \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng, bao g\u1ed3m:<\/p>\n
\u0110\u1ec3 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 gi\u1ea3i ph\u00e1p sau:<\/p>\n
V\u1edbi vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 qu\u1ea3n l\u00fd t\u1ed1t s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t, c\u00e1c k\u1ef9 s\u01b0 x\u00e2y d\u1ef1ng c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 b\u1ec1n v\u1eefng v\u00e0 an to\u00e0n cho c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng tr\u01b0\u1edbc t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng tu\u1ed5i th\u1ecd c\u00f4ng tr\u00ecnh m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng.<\/p>\n","protected":false},"excerpt":{"rendered":"
\u1ea2nh h\u01b0\u1edfng c\u1ee7a s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t l\u00ean c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng: \u0110\u00e2y l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng trong thi\u1ebft k\u1ebf v\u00e0 x\u00e2y d\u1ef1ng \u0111\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng do bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\n