{"id":5134,"date":"2014-09-18T12:43:47","date_gmt":"2014-09-18T08:43:47","guid":{"rendered":"http:\/\/\u0434\u0438\u043f\u043a\u0443\u0440.\u0440\u0444\/?p=5134"},"modified":"2014-09-18T12:43:47","modified_gmt":"2014-09-18T08:43:47","slug":"%d0%b7%d0%b0%d0%b4%d0%b0%d1%87%d0%b0-%e2%84%96-2-%d0%b1%d1%80%d1%83%d1%81-bc-%d1%88%d0%b0%d1%80%d0%bd%d0%b8%d1%80%d0%bd%d0%be-%d0%b7%d0%b0%d0%ba%d1%80%d0%b5%d0%bf%d0%bb%d1%91%d0%bd-%d0%b2-%d1%82","status":"publish","type":"post","link":"http:\/\/\u0434\u0438\u043f\u043a\u0443\u0440.\u0440\u0444\/?p=5134","title":{"rendered":"\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445"},"content":{"rendered":"

\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2<\/p>\n

\u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445 1, 2, 3 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0448\u0430\u0440\u043d\u0438\u0440\u0430\u043c\u0438. \u0412\u0441\u0435 \u0441\u0442\u0435\u0440\u0436\u043d\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u0442 \u0438\u0437 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041a\u0430\u0436\u0434\u044b\u0439 \u0441\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0440\u0430\u0432\u043d\u043e\u0431\u0435\u0434\u0440\u0435\u043d\u043d\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432.<\/p>\n

\u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b \u0441\u0442\u0435\u0440\u0436\u043d\u0435\u0439: \u0421\u0442\u0430\u043b\u044c \u0421\u0442 5.<\/p>\n

F = 75 \u043a\u041d,<\/p>\n

l = 0,5 \u043c.<\/p>\n

F1 \/ F = -1,2<\/p>\n

F2 \/ F = -1,8<\/p>\n

a\/l = 2,2<\/p>\n

b\/l = 1<\/p>\n

\u041f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u21162<\/p>\n

\u0417\u0430\u0434\u0430\u043d\u0438\u0435: \u041f\u043e\u0434\u043e\u0431\u0440\u0430\u0442\u044c \u043d\u043e\u043c\u0435\u0440 \u043f\u0440\u043e\u0444\u0438\u043b\u044f \u043f\u043e \u0413\u041e\u0421\u0422 8509-57<\/p>\n

1) \u041f\u0440\u043e\u0435\u043a\u0442\u043d\u044b\u0439 \u0440\u0430\u0441\u0447\u0451\u0442:<\/p>\n

A > Nz \/ [G]<\/p>\n

2) \u0412\u043d\u0443\u0442\u0440\u0438 \u0441\u0438\u043b\u043e\u0432\u044b\u0435 \u0444\u0430\u043a\u0442\u043e\u0440\u044b:<\/p>\n

2.1) \u0423\u0441\u043b\u043e\u0432\u0438\u0435 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f \u043f\u043b\u043e\u0441\u043a\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441\u0445\u043e\u0434\u044f\u0449\u0438\u0445\u0441\u044f \u0441\u0438\u043b:<\/p>\n

\u0430) \u2211 Xk = 0; b) \u2211 Yk = 0<\/p>\n

\u2211 Xk = F1 \u2013 Nz3 * cos 450 \u2013 Nz2 * cos 300 = 0 (1)<\/p>\n

\u2211 Yk = Nz3 * cos (900 — 300) \u2013 Nz2 * cos (900 — 450) — Nz1 = 0 (2)<\/p>\n

2.2) \u0423\u0441\u043b\u043e\u0432\u0438\u0435 \u0440\u0430\u0432\u043d\u043e\u0432\u0435\u0441\u0438\u044f \u043f\u043b\u043e\u0441\u043a\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e \u0440\u0430\u0441\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0445 \u0441\u0438\u043b.<\/p>\n

\u0430) \u2211 Xk = 0; b) \u2211 Yk = 0; \u2211 \u041c\u0432 (Fk) = 0.<\/p>\n

\u2211 Xk = — xb = 0 (3)<\/p>\n

\u2211 Yk = yb \u2013 F2 + Nz1= 0 (4)<\/p>\n

\u2211 \u041c\u0432 (Fk) = — F2 * a + Nz1 * ab = 0<\/p>\n

Nz1 = F2\/b = -1,8 * 1 = — 1,8;<\/p>\n

Nz1 = — 1,8<\/p>\n

F1 \u2013 Nz3 * cos 300 \u2013 Nz2 * cos 450 = 0<\/p>\n

Nz3 * cos (900 — 300) \u2013 Nz2 * cos 450 — Nz1 = 0<\/p>\n

F1 \u2013 Nz3 * cos 300 \u2013 Nz2 * cos 450 — Nz3 * cos 600 \u2013 Nz2 * cos 450 — F2 = 0<\/p>\n

F1 \u2013 F2 — Nz3 * (cos 300 + 600) = 0<\/p>\n

F1 \u2013 F2 \u2013 Nz3 * (0,86 + 0,5) = 0<\/p>\n

-1,2 \u2013 (-1,8) \u2013 * Nz3 (0,86 + 0,5) = 0<\/p>\n

0,6 \u2013 1,36 * Nz3 = 0<\/p>\n

1,36 * Nz3 = 0,6<\/p>\n

Nz3 = 0,44<\/p>\n

F1 \u2013 Nz3 * cos 300 \u2013 Nz3 * cos 450 = 0<\/p>\n

F1 \u2013 0,86 * Nz3 \u2013 0,7 * Nz2 = 0<\/p>\n

Nz2 = F1 — 0,86 * Nz3 \/ 0,7<\/p>\n

Nz2 = -1,2 — 0,86 * 0,44 \/ 0,7<\/p>\n

Nz2 = — 2,2<\/p>\n

3) \u0414\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u043c\u044b\u0435 \u043d\u0430\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u044f:<\/p>\n

[G] = G\u043f\u0440\u0435\u0434 \/ [n]<\/p>\n

G\u043f\u0440\u0435\u0434 \/ G\u0442; [G] = G\u0442 \/ [n]<\/p>\n

\u0414\u043b\u044f \u0441\u0442\u0430\u043b\u0438 \u043c\u0430\u0440\u043a\u0438 \u0421\u0442 5 \u0432\u044b\u0431\u0438\u0440\u0430\u0435\u043c:<\/p>\n

G\u0442 = 280 \u041d \/ \u043c\u043c2 — \u043f\u0440\u0435\u0434\u0435\u043b \u0442\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u0438;<\/p>\n

[n] = 1,5 \u2013 \u043a\u043e\u044d\u0444\u0444\u0438\u0446\u0438\u0435\u043d\u0442 \u0437\u0430\u043f\u0430\u0441\u0430 \u043f\u0440\u043e\u0447\u043d\u043e\u0441\u0442\u0438<\/p>\n

[G] = 280 \/ 1,5 = 186,6 \u041d \/ \u043c\u043c<\/p>\n

4) \u041f\u0440\u043e\u0435\u043a\u0442\u043d\u044b\u0439 \u0440\u0430\u0441\u0447\u0451\u0442<\/p>\n

Nz1 = — 1,8<\/p>\n

Nz2 = — 2,2 — Nmax<\/p>\n

Nz3 = 0,44<\/p>\n

2 * A > Nzmax \/ [G]<\/p>\n

A > Nzmax \/ 2 * [G]<\/p>\n

A > [2,2] * 75 * 103 \/ 2 * 186.6 = 165000 \/ 373.2 = 4,42 * 102 \u043c\u043c2 = 4,4 \u0441\u043c2<\/p>\n

N \u043f\u0440\u043e\u0444\u0438\u043b\u044f: 4,5 (d=4).<\/p>\n

5) \u0420\u0430\u0441\u0447\u0451\u0442 \u043f\u0435\u0440\u0435\u0433\u0440\u0443\u0437\u043a\u0438:<\/p>\n

(G \u2013 [G] \/ [G]) * 100% = 4%<\/p>\n

G = Nzmax \/ 2 * A; G = 2,2 * 75 * 103 \/ 2 * 4,4 * 102 = 187,5 H \/ \u043c\u043c2<\/p>\n

(G \u2013 [G] \/ [G]) * 100% = (187,5 — 186,6 \/ 186,6) * 100 % = 4 %<\/p>\n

0,4 < 5 \u2013 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f<\/p>\n

\u041e\u0442\u0432\u0435\u0442:<\/p>\n

1) \u041f\u0440\u043e\u0432\u0435\u043b\u0438 \u0440\u0430\u0441\u0447\u0451\u0442\u044b \u043d\u0430 \u043f\u0440\u043e\u0447\u043d\u043e\u0441\u0442\u044c;<\/p>\n

2) \u041d\u0430 \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0438\u0438 \u0440\u0430\u0441\u0447\u0451\u0442\u043e\u0432 \u0432\u044b\u0431\u0438\u0440\u0430\u0435\u043c \u043f\u0440\u043e\u0444\u0438\u043b\u044c \u2116 4,5 \u043f\u043e \u0413\u041e\u0421\u0422 8509 — 57<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445 1, 2, 3 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0448\u0430\u0440\u043d\u0438\u0440\u0430\u043c\u0438. \u0412\u0441\u0435 \u0441\u0442\u0435\u0440\u0436\u043d\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u0442 \u0438\u0437 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041a\u0430\u0436\u0434\u044b\u0439 \u0441\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0440\u0430\u0432\u043d\u043e\u0431\u0435\u0434\u0440\u0435\u043d\u043d\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b \u0441\u0442\u0435\u0440\u0436\u043d\u0435\u0439: \u0421\u0442\u0430\u043b\u044c \u0421\u0442 5. F = 75 \u043a\u041d, l = 0,5 \u043c. F1 \/ F =… Continue Reading \u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445<\/span><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[],"yoast_head":"\n\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/\u0434\u0438\u043f\u043a\u0443\u0440.\u0440\u0444\/?p=5134\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445\" \/>\n<meta property=\"og:description\" content=\"\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445 1, 2, 3 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0448\u0430\u0440\u043d\u0438\u0440\u0430\u043c\u0438. \u0412\u0441\u0435 \u0441\u0442\u0435\u0440\u0436\u043d\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u0442 \u0438\u0437 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041a\u0430\u0436\u0434\u044b\u0439 \u0441\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0440\u0430\u0432\u043d\u043e\u0431\u0435\u0434\u0440\u0435\u043d\u043d\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b \u0441\u0442\u0435\u0440\u0436\u043d\u0435\u0439: \u0421\u0442\u0430\u043b\u044c \u0421\u0442 5. F = 75 \u043a\u041d, l = 0,5 \u043c. F1 \/ F =… Continue Reading \u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445\" \/>\n<meta property=\"og:url\" content=\"http:\/\/\u0434\u0438\u043f\u043a\u0443\u0440.\u0440\u0444\/?p=5134\" \/>\n<meta property=\"article:published_time\" content=\"2014-09-18T08:43:47+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u043c\u0438\u043d\u0443\u0442\u0430\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"http:\/\/\u0434\u0438\u043f\u043a\u0443\u0440.\u0440\u0444\/?p=5134\",\"url\":\"http:\/\/\u0434\u0438\u043f\u043a\u0443\u0440.\u0440\u0444\/?p=5134\",\"name\":\"\u0417\u0430\u0434\u0430\u0447\u0430 \u2116 2 \u0411\u0440\u0443\u0441 BC, \u0448\u0430\u0440\u043d\u0438\u0440\u043d\u043e \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d \u0432 \u0442\u043e\u0447\u043a\u0435 \u0412 \u2013 \u043f\u043e\u0434\u0432\u0435\u0448\u0435\u043d \u043d\u0430 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\u043d\u0430 \u0441\u0442\u0435\u0440\u0436\u043d\u044f\u0445 1, 2, 3 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u043d\u044b\u0445 \u0448\u0430\u0440\u043d\u0438\u0440\u0430\u043c\u0438. \u0412\u0441\u0435 \u0441\u0442\u0435\u0440\u0436\u043d\u0438 \u0441\u043e\u0441\u0442\u043e\u044f\u0442 \u0438\u0437 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041a\u0430\u0436\u0434\u044b\u0439 \u0441\u0442\u0435\u0440\u0436\u0435\u043d\u044c \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u0445 \u0440\u0430\u0432\u043d\u043e\u0431\u0435\u0434\u0440\u0435\u043d\u043d\u044b\u0445 \u0443\u0433\u043e\u043b\u043a\u043e\u0432. \u041c\u0430\u0442\u0435\u0440\u0438\u0430\u043b \u0441\u0442\u0435\u0440\u0436\u043d\u0435\u0439: \u0421\u0442\u0430\u043b\u044c \u0421\u0442 5. 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