185
ɋɬɭɞɟɧɬɭ ɝɪɭɩɩɵ ………
(ɲɢɮɪ ɡɚɞɚɧɢɹ Ⱥȼ = )
ɁȺȾȺɇɂȿ ɉɈ ɊȺɋɑȿɌɇɈɃ ɊȺȻɈɌȿ 3
Ɋɚɫɱɟɬ ɩɥɨɫɤɨɣ ɩɨɩɟɪɟɱɧɨɣ ɪɚɦɵ ɤɚɪɤɚɫɧɨɝɨ ɡɞɚɧɢɹ
ɧɚ ɫɟɣɫɦɢɱɟɫɤɨɟ ɜɨɡɞɟɣɫɬɜɢɟ ɩɨ ɥɢɧɟɣɧɨ-ɫɩɟɤɬɪɚɥɶɧɨɣ ɬɟɨɪɢɢ
ɫ ɢɫɩɨɥɶɡɨɜɚɧɢɟɦ ɩɪɨɝɪɚɦɦɵ SCAD
ȼɵɩɨɥɧɢɬɶ ɪɚɫɱɟɬ ɩɥɨɫɤɨɣ ɩɨɩɟɪɟɱɧɨɣ ɪɚɦɵ ɩɪɨɫɬɪɚɧɫɬɜɟɧɧɨɝɨ ɤɚɪɤɚɫɧɨɝɨ ɡɞɚɧɢɹ
ɧɚ ɝɨɪɢɡɨɧɬɚɥɶɧɨɟ ɫɟɣɫɦɢɱɟɫɤɨɟ ɜɨɡɞɟɣɫɬɜɢɟ, ɫɨɜɩɚɞɚɸɳɟɟ ɩɨ ɧɚɩɪɚɜɥɟɧɢɸ ɫ ɩɥɨɫɤɨɫɬɶɸ
ɪɚɦɵ. Ɋɚɫɱɟɬ ɧɚ ɫɟɣɫɦɢɱɟɫɤɨɟ ɜɨɡɞɟɣɫɬɜɢɟ ɜɵɩɨɥɧɢɬɶ ɩɨ ɥɢɧɟɣɧɨ-ɫɩɟɤɬɪɚɥɶɧɨɣ ɬɟɨɪɢɢ
(ɅɋɌ) ɩɨ ɭɤɚɡɚɧɢɹɦ ɱɚɫɬɢ 1 ɍɆɄ, ɭɱɟɛɧɨɝɨ ɩɨɫɨɛɢɹ [4] ɢɋɇɢɉ [18].
ɉɪɟɞɩɨɥɚɝɚɟɬɫɹ, ɱɬɨ ɩɨɩɟɪɟɱɧɵɟ ɪɚɦɵ ɜ ɩɪɨɫɬɪɚɧɫɬɜɟɧɧɨɦ ɡɞɚɧɢɢ ɢɦɟɸɬ ɪɟɝɭɥɹɪɧɵɣ
ɲɚɝ ɜɞɨɥɶ ɡɞɚɧɢɹ, ɪɚɜɧɵɣ 6 ɦ.
ɋɯɟɦɚ ɩɨɩɟɪɟɱɧɨɣ ɪɚɦɵ ɜɵɛɢɪɚɟɬɫɹ ɩɨ ɲɢɮɪɭ Ⱥȼ ɢɡ ɬɚɛɥ. 3.1 ɡɚɞɚɧɢɹ 3 (ɪɚɡɞɟɥ 2
ɍɆɄ), ɚ ɪɚɡɦɟɪɵ ɪɚɦɵ – ɢɡ ɬɚɛɥ. 3.2.
Ɋɚɦɚ ɩɪɟɞɩɨɥɚɝɚɟɬɫɹ ɜɵɩɨɥɧɟɧɧɨɣ ɢɡ ɦɨɧɨɥɢɬɧɨɝɨ ɠɟɥɟɡɨɛɟɬɨɧɚ ɤɥɚɫɫɚ ȼ25,
ɢɦɟɸɳɟɝɨ ɫɥɟɞɭɸɳɢɟ ɯɚɪɚɤɬɟɪɢɫɬɢɤɢ:
– ɩɥɨɬɧɨɫɬɶ U =2500 ɤɝ/ɦ
3
= 2.5 ɬ/ɦ
3
;
– ɨɛɴɟɦɧɵɣ ɜɟɫ gU
ɛ
= (2.5 ɬ/ɦ
3
)·(9.81 ɦ/ɫ
2
) = 24.525 (ɬ·ɦ/ɫ
2
)/ɦ
3
= 24.525 ɤɇ/ɦ
3
;
– ɦɨɞɭɥɶ ɭɩɪɭɝɨɫɬɢ E = 3.002 ɤɇ/ɦ
2
;
– ɤɨɷɮɮɢɰɢɟɧɬ ɉɭɚɫɫɨɧɚ
Q
=0.2.
Ʉɨɥɨɧɧɵ ɪɚɦɵ ɢɦɟɸɬ ɩɪɹɦɨɭɝɨɥɶɧɨɟ ɩɨɩɟɪɟɱɧɨɟ ɫɟɱɟɧɢɟ ɫ ɪɚɡɦɟɪɚɦɢ
b
ɤ
·= 40 ɫɦ; h
ɤ
·= 40 ɫɦ. ɉɥɨɳɚɞɶ ɩɨɩɟɪɟɱɧɨɝɨ ɫɟɱɟɧɢɹ ɤɨɥɨɧɧɵ F
ɤ
= (0.4 ɦ)·(0.4 ɦ) = 0.16 ɦ
2
.
Ɋɢɝɟɥɢ ɪɚɦɵ ɢɦɟɸɬ ɩɪɹɦɨɭɝɨɥɶɧɨɟ ɩɨɩɟɪɟɱɧɨɟ ɫɟɱɟɧɢɟ ɫ ɪɚɡɦɟɪɚɦɢ b
ɪ
·= 40 ɫɦ;
h
ɪ
·= 60 ɫɦ. ɉɥɨɳɚɞɶ ɩɨɩɟɪɟɱɧɨɝɨ ɫɟɱɟɧɢɹ ɪɢɝɟɥɹ F
ɪ
= (0.4 ɦ)·(0.6 ɦ) = 0.24 ɦ
2
.
ɉɪɟɞɩɨɥɚɝɚɟɬɫɹ, ɱɬɨ ɩɪɢ ɪɚɫɱɟɬɟ ɧɚ ɡɚɞɚɧɧɨɟ ɫɟɣɫɦɢɱɟɫɤɨɟ ɜɨɡɞɟɣɫɬɜɢɟ, ɭɱɢɬɵɜɚɹ
ɪɟɝɭɥɹɪɧɭɸ ɫɯɟɦɭ ɡɞɚɧɢɹ, ɪɚɦɚ ɦɨɠɟɬ ɪɚɫɫɦɚɬɪɢɜɚɬɶɫɹ ɤɚɤ ɨɬɞɟɥɶɧɚɹ ɩɥɨɫɤɚɹ ɪɚɦɚ ɧɚ
ɪɢɝɟɥɢ ɤɨɬɨɪɨɣ ɨɩɢɪɚɸɬɫɹ ɩɥɢɬɵ ɩɟɪɟɤɪɵɬɢɣ ɢɡ ɠ/ɛ ɬɨɝɨ ɠɟ ɤɥɚɫɫɚ, ɬɨɥɳɢɧɨɣ 16 ɫɦ.
Ƚɪɭɧɬɨɜɨɟ ɨɫɧɨɜɚɧɢɟ ɪɚɦɵ ɩɨ ɤɥɚɫɫɢɮɢɤɚɰɢɢ ɋɇɢɉ [18] ɨɬɧɨɫɢɬɫɹ ɤ ɤɚɬɟɝɨɪɢɢ 1.
ɂɧɬɟɧɫɢɜɧɨɫɬɶ ɫɟɣɫɦɢɱɟɫɤɨɝɨ ɜɨɡɞɟɣɫɬɜɢɹ ɩɨ ɞɟɣɫɬɜɭɸɳɟɣ ɜ Ɋɨɫɫɢɢ ɲɤɚɥɟ
ɫɟɣɫɦɢɱɟɫɤɨɣ ɢɧɬɟɧɫɢɜɧɨɫɬɢ MSK-64 ɩɪɢɧɢɦɚɟɬɫɹ ɪɚɜɧɨɣ 9 ɛɚɥɥɨɜ.
ȼ ɫɨɨɬɜɟɬɫɬɜɢɢ ɫ ɅɋɌ ɢ ɭɤɚɡɚɧɢɹɦɢ ɱɚɫɬɢ 1 ɍɆɄ, ɭɱɟɛɧɨɝɨ ɩɨɫɨɛɢɹ [4] ɢ
ɋɇɢɉ [18] ɪɚɫɱɟɬ ɡɚɞɚɧɧɨɣ ɪɚɦɵ ɫɜɨɞɢɬɫɹ:
ɤ ɨɩɪɟɞɟɥɟɧɢɸ ɪɚɫɱɟɬɧɵɯ ɫɟɣɫɦɢɱɟɫɤɢɯ ɧɚɝɪɭɡɨɤ, ɞɟɣɫɬɜɭɸɳɢɯ ɜ ɭɡɥɚɯ
ɪɚɫɱɟɬɧɨɣ ɫɯɟɦɵ ɆɄɗ ɪɚɦɵ ɜ ɧɚɩɪɚɜɥɟɧɢɢ ɞɢɧɚɦɢɱɟɫɤɢɯ ɫɬɟɩɟɧɟɣ ɫɜɨɛɨɞɵ ɭɡɥɨɜ,
ɢ ɪɚɫɱɟɬɧɵɯ ɭɫɢɥɢɣ M, Q, N ɜ ɭɡɥɨɜɵɯ ɢ ɞɪɭɝɢɯ (ɧɚɦɟɱɟɧɧɵɯ ɪɚɫɱɟɬɱɢɤɨɦ)
ɫɟɱɟɧɢɹɯ ɫɬɟɪɠɧɟɜɵɯ Ʉɗ ɪɚɦɵ.
Ʉɭɪɫɨɜɚɹ ɪɚɫɱɟɬɧɚɹ ɪɚɛɨɬɚ ɫɨɫɬɨɢɬ ɢɡ ɫɥɟɞɭɸɳɢɯ ɞɜɭɯ ɪɚɡɞɟɥɨɜ.
1.Ɋɚɫɱɟɬ ɧɚ ɉɄ ɫ ɢɫɩɨɥɶɡɨɜɚɧɢɟɦ ɩɪɨɝɪɚɦɦɵ SCAD, ɪɟɚɥɢɡɭɸɳɟɣ
ɥɢɧɟɣɧɨ-ɫɩɟɤɬɪɚɥɶɧɭɸ ɬɟɨɪɢɸ (ɅɋɌ) ɜ ɫɨɨɬɜɟɬɫɬɜɢɢ ɫɨ ɋɇɢɉ [18]
2. Ʉɨɧɬɪɨɥɶɧɵɟ ɪɚɫɱɟɬɵ ɜɪɭɱɧɭɸ ɩɨ ɮɨɪɦɭɥɚɦ ɱɚɫɬɢ 1 ɍɆɄ, ɩɨɫɨɛɢɹ [4] ɢ
ɋɇɢɉ [18]