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ظبط جودة الخرسانة إحصائياً
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ظبط جودة الخرسانة إحصائياً
1.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ٨٩ bîöb–yg@òãbŠ¨a@ñ…ìu@Áj™ Statistical Quality
Control ٦-١نﺔﺎﺍﳋﺮﺳ ﻣﻘﺎﻭﻣﺔ ﻓﻰ ﻟﺘﻐﲑﺍ__________________ ﺧﻼل وأﻳﻀﺎ ﺧﻠﻄﺔ إﻟﻰ ﺧﻠﻄﺔ ﻣﻦ ﻣﺘﻐﻴﺮة ﺗﻜﻮن اﻟﻤﻮﻗﻊ ﻓﻰ اﻟﻤﻨﺘﺠﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻣﻘﺎوﻣﺔ ﻓﺈن ًﺎﻏﺎﻟﺒ اﻟﻮاﺣﺪة اﻟﺨﻠﻄﺔ.اﻟﺘﻐﻴﺮ هﺬا وﻳﺮﺝﻊﻣﻨﻬﺎ ﻋﺪﻳﺪة ﻋﻮاﻣﻞ إﻟﻰ: ١-اﻟﻤﻜﻮﻧﺎت وﺧﻮاص ﺝﻮدة إﺧﺘﻼف)أﺳﻤﻨﺖ-رآﺎم-ﻣﺎء-إﺽﺎﻓﺎت.( ٢-ﺏﺎﻟﺨﻠﻄﺔ اﻟﻤﺎء ﻧﺴﺒﺔ ﻓﻰ اﻟﺘﻐﻴﺮ. ٣-اﻟﺨﺮﺳﺎﻧﺔ ﺻﻨﺎﻋﺔ ﺧﻄﻮات ﻓﻰ اﻟﺘﻐﻴﺮ)اﻟﺨﻠﻂ ﻃﺮﻳﻘﺔ-اﻟﻨﻘﻞ-اﻟﺼﺐ-اﻟﺪﻣﻚ-اﻟﻤﺼﻨﻌﻴﺔ.( ٤-اﻟﻤﻌﺎﻟﺠﺔ ﻋﻤﻠﻴﺔ أو اﻟﺤﺮارة درﺝﺔ ﻓﻰ اﻟﺘﻐﻴﺮ. ٥-اﻟﺘﻐاﻟﺼﺐ ﻗﻮاﻟﺐ ﺻﻨﺎﻋﺔ ﻓﻰ أﺧﻄﺎء ﻧﺘﻴﺠﺔ ﻴﺮ. ٦-اﻹﺧﺘﺒﺎر أﺛﻨﺎء أﺧﻄﺎء وﺝﻮد)اﻟﻤﺎآﻴﻨﺔ ﺳﺮﻋﺔ-اﻟﻌﻴﻨﺔ ﻣﺮآﺰﻳﺔ ﻋﺪم-ﻣﻌﺎﻳﺮة ﻏﻴﺮ اﻟﻤﺎآﻴﻨﺔ.( ٦-٢ﻟﺘﻜﺮﺍﺭﻯﺍ ﻳﻊﺯﻟﺘﻮﺍ ﻣﻨﺤﻨﻰ __________________ و ﺗﺠﺎﻧﺲ ﻣﺪى ﻋﻠﻰ ﻟﻠﻮﻗﻮف اﻟﻨﺘﺎﺋﺞ ﺗﺤﻠﻴﻞ هﻮ إﺣﺼﺎﺋﻴﺎ اﻟﺨﺮﺳﺎﻧﺔ ﺝﻮدة ﺽﺒﻂ ﻣﻦ اﻟﻐﺮضﺝﻮدة ﻟﻠﻤﻮاﺻﻔﺎت ﻣﻄﺎﺏﻘﺘﻬﺎ و اﻟﺨﺮﺳﺎﻧﺔ.اﻟﻨﺘﺎﺋﺞ ﻣﻦ آﺒﻴﺮ ﻋﺪد ﻋﻨﺪﻧﺎ ﻳﻜﻮن ﻓﻌﻨﺪﻣﺎ)اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ( ﺗﻜﺮارى ﺗﻮزﻳﻊ ﺷﻜﻞ ﻋﻠﻰ اﻟﺒﻴﺎﻧﺎت ﻣﺠﻤﻮﻋﺔ ﺗﻨﻈﻴﻢ اﻟﻤﻔﻴﺪ ﻣﻦ ﻳﻜﻮن ﻓﺈﻧﻪ)هﻴﺴﺘﻮﺝﺮام(ﻓﻰ آﻤﺎ ﺷﻜﻞ)٦-١(اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ اﻷﻓﻘﻰ اﻟﻤﺤﻮر ﻳﻤﺜﻞ ﺣﻴﺚ)ﻓﺎﺻﻠﺔ ﻓﺘﺮات ﻋﻦ ﻋﺒﺎرة(اﻟﻤﺤﻮر وﻳﻤﺜﻞ اﻟﺮاﻟﻌﻴﻨﺎت ﻋﺪد أﺳﻰ)اﻟﺘﻜﺮار(ﻣﻌﻴﻨﺔ ﻣﻘﺎوﻣﺔ آﻞ ﻋﻨﺪ. اﻟﺘﻜـﺭارFrequency اﻟﺘﻜـﺭارFrequency kσ kσ fmin fm fmax 100 150 200 250 300 350 اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ-آﺞ/ﺳﻢ٢اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ ﺷﻜﻞ)٦-١(ﺷﻜﻞ ﻟﺘﻜﺮﺍﺭﺍ ﻫﻴﺴﺘﻮﺟﺮﺍﻡ)٦-٢(ﻳﻊﺯﻟﺘﻮﺍ ﻣﻨﺤﻨﻰﻟﺘﻜﺮﺍﺭﻱﺍ fmax = fm ± kσ min
2.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ٩٠ اﻟﻔﺘﺮة ﻋﺮض ﻳﺼﻞ
ﻋﻨﺪﻣﺎًاﺝﺪ ﺻﻐﻴﺮة ﻗﻴﻤﺔ إﻟﻰ)≅ﺻﻔﺮ(ًاآﺒﻴﺮﺝﺪ اﻟﻌﻴﻨﺎت ﻋﺪد وﻳﻜﻮن)∞ ≅( ﻓﺈن: اﻟﺘﻮزﻳﻊ ﻣﻨﺤﻨﻰ ﺏﺈﺳﻢ ﻳﻌﺮف ﻣﻨﺤﻨﻰ إﻟﻰ ﻳﺘﺤﻮل اﻟﻬﻴﺴﺘﻮﺝﺮاماﻟﺘﻜﺮاري.Distribution Curve اﻟ اﻟﻘﻴﻤﺔ ﻣﻦ ﻣﺘﺴﺎوﻳﺔ أﺏﻌﺎد ﻋﻠﻰ اﻟﻨﺘﺎﺋﺞ ﺗﻜﻮن وﻋﻨﺪﻣﺎﻟﻪ اﻟﻌﻴﻨﺎت ﻣﻦ ﻋﺪد أآﺒﺮ ﻳﻜﻮن و ﻤﺘﻮﺳﻄﺔ ﻓﺈن ﻟﻠﻤﺘﻮﺳﻂ ﻣﺴﺎوﻳﺔ ﻗﻴﻤﺔ: اﻟﻄﺒﻴﻌﻰ اﻟﺘﻜﺮارى اﻟﺘﻮزﻳﻊ ﻣﻨﺤﻨﻰ ﺏﺈﺳﻢ اﻟﻤﻨﺤﻨﻰ وﻳﻌﺮف ﻃﺒﻴﻌﻰ ﻳﻜﻮن اﻟﺘﻮزﻳﻊNormal Distribution Curveاﻟﺠﺮس ﺷﻜﻞ ﻋﻠﻰ ﺷﻜﻠﻪ وﻳﻜﻮنBell Shapeﺷﻜﻞ ﻓﻰ آﻤﺎ)٦-٢.( ﺗﻌﺘﻤ اﻟﻄﺒﻴﻌﻰ اﻟﺘﻜﺮارى اﻟﺘﻮزﻳﻊ ﻣﻨﺤﻨﻰ وﺧﺼﺎﺋﺺاﻟﻤﺘﻮﺳﻂ ﻗﻴﻤﺘﻰ ﻋﻠﻰ ﺪ(fm)واﻹﻧﺤﺮاف اﻟﻤﻌﻴﺎرى)σ.( σ±= kff m min max ﺣﻴﺚkاﻟﺤﺪود ﺧﺎرج ﻣﻌﻴﻨﺔ ﻣﻘﺎوﻣﺔ وﻗﻮع إﺣﺘﻤﺎل ﻋﻦ وﻳﻌﺒﺮ اﻹﺣﺘﻤﺎﻻت ﻣﻌﺎﻣﻞ هﻰ)fm ± k σ( وσاﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮاف هﻰ.أﻣﺎfmاﻟﻤﺘﻮﺳـﻄـﺔ اﻟﻘﻴـﻤﺔ ﻓﺘﻤﺜﻞ.وﻗﻴﻤﺔاﻻﻧﺤﺮافاﻟﻤﻌﻴﺎري أﻧﻬﺎ ﻋﻠﻰ ﺗﻌﺮفاﻹﻧﺤﺮاﻓﺎت ﻗﻴﻤﺔ ﻣﺮﺏﻊ ﻣﺘﻮﺳﻂ ﺝﺬر σ = −∑(x x) n 2 orσ = −∑(x x) n -1 2 n ≤ 20n > 20 ﺟﺪﻭﻝ)٦-١(ﺍﻹﺣﺘﻤﺎﻻﺕ ﻣﻌﺎﻣﻞ ﻗﻴﻤﺔ اﺣﺘﻤﺎلوﻗﻮع ﻣﻣﻌﻴﻨﺔ ﻘﺎوﻣﺔ ﺧﺎرج (fm - k σ) اﺣﺘﻤﺎلوﻗﻮع ﻣﻌﻴﻨﺔ ﻣﻘﺎوﻣﺔ ﺧﺎرج )fm ± k σ( k ٠٫١% ١% ٥% ١٠% ١٥٫٩% ٠٫٢% ٢% ١٠% ٢٠% ٣١٫٨% ٣٫١ ٢٫٣٣ ١٫٦٤ ١٫٢٨ ١٫٠ ﺷﻜﻞ)٦-٣(ﻟﻄﺒﻴﻌﻰﺍ ﻳﻊﺯﻟﺘﻮﺍ ﻣﻨﺤﻨﻰ ﺋﺺﺎﺧﺼ. 10%10% 5%5% 1.641.64 1.28 1.28 σ σ σ σ fm اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮارFrequency
3.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ٩١ ٦-٣ﺍﳌﻤﻴﺰﺓ ﻭﺍﳌﻘﺎﻭﻣﺔ ﺍﳌﺘﻮﺳـﻄﺔ
ﺍﳌﻘﺎﻭﻣﺔ________________________ 6-3-1 ) ((fcu) Characteristic Strength ﻋﻨﻪ ﻳﻘﻞ أن اﻟﻤﺤﺘﻤﻞ ﻏﻴﺮ ﻣﻦ اﻟﺬى اﻟﻘﻴﺎﺳﻰ اﻟﺨﺮﺳﺎﻧﻰ اﻟﻤﻜﻌﺐ آﺴﺮ إﺝﻬﺎد ﻗﻴﻤﺔ هﻰ ﻣﻦ أآﺜﺮ٥%اﻟﺘﻨﻔﻴﺬ أﺛﻨﺎء اﻟﻤﻘﺎوﻣﺔ ﺗﺤﺪﻳﺪ إﺧﺘﺒﺎرات ﻧﺘﺎﺋﺞ ﻋﺪد ﻣﻦ)درﺝﺔ ﺛﻘﺔ=٩٥.(%هﻰ اﻟﻤﻤﻴﺰة واﻟﻤﻘﺎوﻣﺔاﻟﻤﻬﻨﺪس أﺳﺎﺳﻬﺎ ﻋﻠﻰ ﻳﺠﺮى اﻟﺘﻰ اﻟﻤﻘﺎوﻣﺔ ﺣﺴﺎﺏﺎﺗﻪ اﻹﻧﺸﺎﺋﻰ. 6-3-2 Target Mean Strength(fm) اﻟﻤﻘﺎوﻣﺔ ﻣﺘﻮﺳﻂ ﻳﻜﻮن ﺏﺤﻴﺚ ﻣﻜﻮﻧﺎﺗﻬﺎ ﻣﺤﺘﻮﻳﺎت ﺏﺘﺤﺪﻳﺪ اﻟﺨﺮﺳﺎﻧﺔ ﺧﻠﻄﺔ ﺗﺼﻤﻢ اﻟﻤﻤﻴﺰة اﻟﻤﻘﺎوﻣﺔ ﻟﻤﺠﻤﻮع ﻣﺴﺎوﻳﺎ اﻟﻤﺴﺘﻬﺪف(fcu)أﻣﺎن هﺎﻣﺶ إﻟﻴﻪ ًﺎﻣﻀﺎﻓ(M) اﻟﻤﻄﻠﻮﺏﺔ اﻟﻤﻤﻴﺰة اﻟﻤﻘﺎوﻣﺔ ﻋﻠﻰ اﻟﺤﺼﻮل ﻳﻜﻔﻞ. fm = fcu + M ﻗﻴﻤﺔ ﺗﺨﻴﻞ وﻳﻤﻜﻨﻨﺎ(fm)،(fcu)ﻳﻠﻰ آﻤﺎ اﻟﺘﻜﺮارى اﻟﺘﻮزﻳﻊ ﻣﻨﺤﻨﻰ ﻋﻠﻰ: *ﺛﻘﺔ درﺝﺔ ﻣﻄﻠﻮب ﻳﻜﻮن أن ﺣﺎﻟﺔ ﻓﻰConfidence٩٥%ﻓﺈنk = 1.64وﻳﻜﻮن fm = fcu + 1.64 σ *در ﻣﻄﻠﻮب ﻳﻜﻮن أن ﺣﺎﻟﺔ ﻓﻰﺛﻘﺔ ﺝﺔConfidence٩٠%ﻓﺈنk = 1.28وﻳﻜﻮن fm = fcu + 1.28 σ ﺷﻜﻞ)٦-٤(ﺍﳌﺘﻮﺳﻄﺔ ﻭﺍﳌﻘﺎﻭﻣﺔ ﺍﳌﻤﻴﺰﺓ ﺍﳌﻘﺎﻭﻣﺔ. 5% M 1.64 σ fm = fcu + M fcu fm اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ اﻟﺘﻜـــﺮارFrequency
4.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ٩٢ ٦-٤ﺍﳉـﻮﺩﺓ ﻓﻰ ﻟﺘﺤﻜﻢﺍ
ﻳﺎﺕﻮﻣﺴﺘ_____________________ اﺳﺘﺨﺪماﻻﻧﺤﺮافاﻟﻤﻌﻴﺎري(σ)ﺣﻴﺚ ﻟﻠﺨﺮﺳﺎﻧﺔ اﻟﺠﻮدة ﺽﺒﻂ ﻟﺪرﺝﺔ آﻤﻘﻴﺎسزادت آﻠﻤﺎ أﻧﻪ ﻗﻴﻤﺔσﺝﺪول وﻳﻤﺜﻞ ﺻﺤﻴﺢ واﻟﻌﻜﺲ اﻟﺠﻮدة ﻓﻰ اﻟﺘﺤﻜﻢ ﺽﻌﻒ ﻋﻠﻰ ذﻟﻚ دل)٦-٢(ﻗﻴﻢσ اﻟﺠﻮدة ﻓﻰ اﻟﺘﺤﻜﻢ ﻟﺪرﺝﺔ اﻟﻤﻨﺎﻇﺮة: ﺟﺪﻭﻝ)٦-٢(ﻳﻜﻰﺮﺍﻷﻣ نﺔﺎﺍﳋﺮﺳ ﺃﲝﺎﺙ ﳌﻌﻬﺪ ﻃﺒﻘﺎ نﺔﺎﺍﳋﺮﺳ ﺟﻮﺩﺓ ﻓﻰ ﻟﺘﺤﻜﻢﺍ ﻳﺎﺕﻮﻣﺴﺘ. اﻟﺘﺤﻜﻢ درﺝﺔﻣﻤﺘﺎزةًاﺝﺪ ﺝﻴﺪةﺝﻴﺪةﻣﻘﺒﻮﻟﺔردﻳﺌﺔ σآﺞ/ﺳﻢ٢ﻣﻦ أﻗﻞ٢٨٢٨-٣٥٣٥-٤٢٤٢-٤٩ﻣﻦ أآﺒﺮ٤٩ ﻓﻰ ﻧﺴﺒﻴﺎ آﺒﻴﺮة ﺗﻜﻮن أﻧﻬﺎ ُﺝﺪو ﻓﻘﺪ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﻋﻠﻰ ﺗﻌﺘﻤﺪ اﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮاف ﻗﻴﻤﺔ ﻷن ًاوﻧﻈﺮ اﻹﺧﺘﻼف ﻣﻌﺎﻣﻞ إﺳﺘﺨﺪام اﻷﻓﻀﻞ ﻣﻦ ﻳﻜﻮن وﺏﺎﻟﺘﺎﻟﻰ اﻟﻤﻘﺎوﻣﺔ ﻋﺎﻟﻴﺔ اﻟﺨﺮﺳﺎﻧﺔ ﺣﺎﻟﺔ(v)ﻣﻦ ًﻻﺏﺪ اﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮاف)σ(ﻓﺝﺪول ﻓﻰ آﻤﺎ اﻟﺠﻮدة ﻓﻰ اﻟﺘﺤﻜﻢ ﻣﺴﺘﻮى ﺗﺤﺪﻳﺪ ﻰ)٦-٣.( mf v σ = fm = fcu + k v fm → fcu = fm (1-kv) f f 1 kv m cu = − درﺝ آﺎﻧﺖ ﻓﺈذاـاﻟﺜﻘ ﺔــﺔ٩٥%ﻗﻴﻤﺔ ﻓﺈنkﺗﻜﻮن١٫٦٤. اﻟﺜﻘﺔ درﺝﺔ آﺎﻧﺖ إذا أﻣﺎ٩٠%ﻗﻴﻤﺔ ﻓﺈنkﺗﻜﻮن١٫٢٨. ﺗﺪرﻳﺐ:اﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮاف ﻗﻴﻤﺘﻰ ﻣﻦ ًﻼآ أﺣﺴﺐ)σ(اﻹﺧﺘﻼف وﻣﻌﺎﻣﻞ(v)ﻟﻠﻤﺠﻤﻮﻋﺘﻴﻦ اﻟﻨﺘﺎﺋﺞ ﻋﻠﻰ وﻋﻠﻖ اﻵﺗﻴﺘﻴﻦ. ﺗﻘﻠﻴﺪﻳﺔ ﺧﺮﺳﺎﻧﺔ اﻷوﻟﻰ اﻟﻤﺠﻤﻮﻋﺔ:٢٠٠،٢١٠،٢٢٠آﺞ/ﺳﻢ٢ اﻟﻤﻘﺎوﻣﺔ ﻋﺎﻟﻴﺔ ﺧﺮﺳﺎﻧﺔ اﻟﺜﺎﻧﻴﺔ اﻟﻤﺠﻤﻮﻋﺔ:١٠٠٠،١٠٥٠،١١٠٠آﺞ/ﺳﻢ٢ ﺟﺪﻭﻝ)٦-٣(ﺍﻹﺧﺘﻼﻑ ﻣﻌﺎﻣﻞ ﻟﻘﻴﻤﺔ ﻃﺒﻘﺎ نﺔﺎﺍﳋﺮﺳ ﺟﻮﺩﺓ ﻓﻰ ﻟﺘﺤﻜﻢﺍ ﻳﺎﺕﻮﻣﺴﺘ. اﻟﺘﺤﻜﻢ درﺝﺔﻣﻤﺘﺎزةﺝﻴﺪةﻣﻘﺒﻮﻟﺔﺽﻌﻴﻔﺔ v%ﻣﻦ أﻗﻞ١٠١٠-١٥١٥-٢٠ﻣﻦ أآﺒﺮ٢٠
5.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ٩٣ ﺷﻜﻞ)٦-٥(ﻳﻊﺯﻟﺘﻮﺍ ﻣﻨﺤﻨﻰ ﺷﻜﻞ
ﻋﻠﻰ ﺍﻹﺧﺘﻼﻑ ﻣﻌﺎﻣﻞ ﺗﺄﺛﲑ. اﻟﺠﺪﻳﺮ وﻣﻦﻣﻌﺎﻣﻞ ﻗﻴﻤﺔ ﻓﻰ اﻟﺘﻐﻴﺮ ﻧﺘﻴﺠﺔ ًاآﺜﻴﺮ ﻳﺘﺄﺛﺮ اﻟﺘﻜﺮارى اﻟﺘﻮزﻳﻊ ﻣﻨﺤﻨﻰ ﺷﻜﻞ أن ﺏﺎﻟﺬآﺮ اﻹﺧﺘﻼف(v)ﻗﻴﻤﺔ ﻗﻠﺖ وﺏﺎﻟﺘﺎﻟﻰ اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﻓﻰ اﻟﺘﻐﻴﺮ ﻗﻞ آﻠﻤﺎ ًﺎﺗﺪﺏﺒ ﻳﺰداد ﺣﻴﺚ(v)آﻤﺎ ﺏﺎﻟﺸﻜﻞ)٦-٥.( ٦-٥نﺔﺎﺍﳋﺮﺳ ﺇﺧﺘﺒﺎﺭ نﺘﻴﺠﺔ ﻋﻠﻰ ﺍﳊﻜﻢ________________________ ﻣﺴﺘﻮﻓﻴﺔ اﻟﺨﺮﺳﺎﻧﺔ أﻋﺘﺒﺮ ﻗﺪ اﻟﺨﺮﺳﺎﻧﻴﺔ اﻟﻤﻨﺸﺂت وﺗﻨﻔﻴﺬ ﻟﺘﺼﻤﻴﻢ اﻟﻤﺼﺮى اﻟﻜﻮد ﻓﺈن ًﺎوﻋﻤﻮﻣ ﻣﺎﻳﻠﻰ ﺗﺤﻘﻖ إذا اﻟﺘﻨﻔﻴﺬ أﺛﻨﺎء اﻟﻤﻄﻠﻮﺏﺔ اﻟﻤﻤﻴﺰة اﻟﺨﺮﺳﺎﻧﺔ ﻟﺮﺗﺒﺔ: QM@@åß@Šr×c@òãbŠ‚ÜÛ@ÁÌšÛa@pbjÈØß@…†Ç@æb×@a‡gRP@wöbnã@…†Ç@†íŒm@ü@æc@Â’îÏ@òäîÇ@ pa‰bjnaÝÔm@ónÛa@pbjÈؽa@@ñõaŠÓ@å튒Ç@ÝØÛ@ñ†yaë@ñõaŠÓ@óÜÇ@òiìÜݽa@ñŒîà½a@òßëbÔ½a@åÇ@ IU@HE@ñõaŠÓ@ŠÌ•cë@ñõaŠÓ@×c@´i@ÖŠÐÛa@†íŒí@ü@æc@Â’í@bà×Iô†½a@H@óÜÇRU@E@Áìnß@åß paõaŠÔÛa@Éîº. RM@@åß@ÝÓc@òãbŠ‚ÜÛ@ÁÌšÛa@pbjÈØß@…†Ç@æb×@a‡gRP@òvînã@òíc@ÝÔm@ü@æc@Â’îÏ@kÈØß@ bÔ½a@åÇ@‰bjng@ñõaŠÓ@ŠÌ•cë@ñõaŠÓ@×c@´i@ÖŠÐÛa@†íŒí@ü@æc@Â’í@bà×@òiìÜݽa@ñŒîà½a@òßë Iô†½a@H@óÜÇRU@EpaõaŠÔÛa@Éîº@Áìnß@åß.@ اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔfm v = 20% v = 15% v = 10% اﻟﺘﻜﺮارFrequency
6.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ٩٤ ٦-٦ﺗﻄﺒﻴـــــﻘﺎﺕ________ 6-6-1
اﻟﻤﺘﻮﺳﻄ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﺣﺴﺎب هﻮ اﻟﻤﻄﻠﻮب ﻳﻜﻮن هﻨﺎﺔfmﻣﻌﻴﻨﺔ ﻗﻴﻤﺔ ﺗﺤﻘﻖ اﻟﺘﻰ اﻟﻤﻤﻴﺰة ﻟﻠﻤﻘﺎوﻣﺔfcu)إﻻ ﻋﻨﻬﺎ ﻳﻘﻞ ﻻ أن اﻟﻤﺤﺘﻤﻞ ﻣﻦ اﻟﺘﻰ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﺏﻤﻌﻨﻰ ﻣﻌﻴﻨﺔ ﻧﺴﺒﺔ(اﻟﺠﻮدة ﻓﻰ اﻟﻤﺘﻮﻗﻊ اﻟﺘﺤﻜﻢ درﺝﺔ ﺏﺪﻻﻟﺔ وذﻟﻚ. <Ù^nÚM<V<ìˆéÛ¹]<íÚæ^Ϲ]<íÛéÎ<kÞ^Ò<]ƒc<íéÞ^‰†}<íŞ×}<ÜéÛ’jÖ<íeçת¹]<íŞ‰çj¹]<íÚæ^Ϲ]<gŠu_<ÜÛŁ‘<îjÖ] <îâ<Å憹]<^ãé×ÂNQLsÒ<K܉N E<<àÚ<†nÒ_<^ãßÂ<ØÏè<÷Q<Asñ^jßÖ]<àÚ<D<îÊ<ÜÓ <íq…<îjÖ^u<îÊ<ÔÖƒæ íÖçfÏÚæ<ì‚éq<ìç¢]. اﻟﺤـــــــــﻞ أ-ﺝﻴﺪة ﺗﺤﻜﻢ ﺣﺎﻟﺔ(v=0.125) f f 1 1.64v 250 1 1.64 (0.125) 314.5 kg / cmm cu 2 = − = − = ب-ﻣﻘﺒﻮﻟﺔ ﺗﺤﻜﻢ ﺣﺎﻟﺔ(v=0.175) f f 1 1.64v 250 1 1.64 (0.175) 350.6 kg / cmm cu 2 = − = − = 6-6-2 ﻣﻦ ﻣﻌﻴﻨﺔ درﺝﺔ ﻋﻨﺪ ﻣﻌﺮوﻓﺔ اﻟﻌﻴﻨﺎت ﻣﻦ ﻟﻌﺪد اﻟﻤﺘﻮﺳﻄﺔ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ آﺎﻧﺖ إذا ًﺎإﻧﺸﺎﺋﻴ اﻟﻤﺸﺮوع ﺗﺼﻤﻴﻢ ﻳﺘﻢ اﻟﺘﻰ اﻟﻤﻤﻴﺰة اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ هﻰ ﻓﻤﺎ اﻟﺠﻮدة ﻓﻰ اﻟﺘﺤﻜﻢ ﻋﻠﻴﻬﺎ)اﻟﻨﺘﺎﺋﺞ ﻣﻦ ﻣﻌﻴﻨﺔ ﻧﺴﺒﺔ إﻻ ﻗﻴﻤﺘﻬﺎ ﻋﻦ ﻻﻳﻘﻞ أن ﻳﺘﻮﻗﻊ اﻟﺘﻰ.( <Ù^nÚN<V<^Ò<]ƒc<çâ<íéÞ^‰†}<íŞ×¤<¼Ç–Ö]<íÚæ^ÏÚ<¼‰çjÚ<áNSQsÒ<<K܉N <ğ^èæ^ŠÚ<ï…^éù]<Í]†©ý]<á^Òæ<<NL<< sÒK܉N <<J<àÚ<†nÒ_<^ãjÛéÎ<àÂ<ØÏè÷<á_<ÄÎçjè<îjÖ]<íÚæ^Ϲ]<íÛéÎ<îâ<^ÛÊML<A<sñ^jßÖ]<àÚEUL<A<íq… íÏmJD اﻟﺤـــــــــــﻞ fcu = fm (1-kv) or fcu = fm - k σ ﺛﻘﺔ درﺝﺔ ﺣﺎﻟﺔ ﻓﻰ٩٠%ﻗﻴﻤﺔ ﻓﺈنkﺗﺴﺎوى١٫٢٨ fcu = 275 - 1.28 (20) = 249.4 kg/cm2
7.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ٩٥ 6-6-3
ﻓﻰ اﻟﺘﻐﻴﺮ ﻗﻴﻤﺔ ﺏﺤﺴﺎب وذﻟﻚ ﺏﺎﻟﻔﻌﻞ ﻗﺎﺋﻢ ﻣﻨﺸﺄ ﺧﺮﺳﺎﻧﺔ ﺻﻼﺣﻴﺔ ﻋﻠﻰ اﻟﺤﻜﻢ ﻳﻤﻜﻦ اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ)اﻹﺧﺘ ﺏﺈﺳﺘﺨﺪام ﻗﻴﺎﺳﻬﺎ ﻳﻤﻜﻦ اﻟﺘﻰﻣﻄﺮﻗﺔ ﻣﺜﻞ اﻟﻤﺘﻠﻔﺔ ﻏﻴﺮ ﺒﺎرات ﺷﻤﻴﺪت(ﺛﻘﺔ درﺝﺔ ﺗﺤﻘﻖ اﻟﺘﻰ اﻟﻤﻘﺎوﻣﺔ وﺣﺴﺎب٩٥%اﻟﻤﻘﺎوﻣﺔ ﺏﻘﻴﻤﺔ ﻣﻘﺎرﻧﺘﻬﺎ ﺛﻢ ﺏﺎﻟﻔﻌﻞ ﻋﻠﻴﻬﺎ اﻟﺘﺼﻤﻴﻢ ﺗﻢ اﻟﺘﻰ اﻟﻤﻤﻴﺰةاﻟﺨﺮﺳﺎﻧﺔ رﻓﺾ أو ﺏﻘﺒﻮل اﻟﺤﻜﻢ وﺏﺎﻟﺘﺎﻟﻰ. <Ù^nÚO<V<<íé×ã΂Ö^e<íéñ]‚je]<퉅‚¹<íè^ÃÖ]<íf×Ö]<íÞ^‰†}<íéuø‘<î×Â<ÜÓ£]<‚ßÂ<‚ÃÖ<¼Ç–Ö]<íÚæ^ÏÚ<Œ^éÎ< MSî×è<^ÛÒ<íÚæ^Ϲ]<kÞ^Òæ<Ì×j§<gÃÓÚ<: 218-184-177-215-186-173-209-142-153-187181-193-147-213- 231-200-221. <íÞ^‰†~×Ö<íé×ÃËÖ]<íÚæ^Ϲ]<íÛéÎ<îâ<^ÛÊE<íÏm<íq…UQ<<DA¹]<kÞ^Ò<]ƒc<˜Ê†Łi<Ý_<íÞ^‰†¤]<ØfÏŁi<Øâæ<íÚæ^Ï <îâ<^ã‰^‰_<î×Â<ÜéÛ’jÖ]<<îjÖ]<ìˆéÛ¹]NLL<sÒ<K܉N[ ــــــــــــاﻟﺤــــــــــﻞــــــــــــ اﺏﺘﺪاءﻣﻦ أآﺜﺮ ﻟﻮﺝﻮد وذﻟﻚ أﺝﻠﻬﺎ ﻣﻦ ُﻤﻤﺖﺻ اﻟﺘﻰ اﻟﺸﺮوط ﺗﺤﻘﻖ وﻻ ﻣﺮﻓﻮﺽﺔ اﻟﺨﺮﺳﺎﻧﺔ ﻓﺈن أﺳﺎﺳﻬ ﻋﻠﻰ اﻟﺘﺼﻤﻴﻢ ﺗﻢ اﻟﺘﻰ اﻟﻤﻤﻴﺰة اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﻣﻦ أﻗﻞ ﻗﻴﻤﺘﻬﺎ ﻧﺘﻴﺠﺔوهﻰ ﺎ٢٠٠آﺞ/ﺳﻢ٢ ﻋﻴﻨﺔ ﻋﺸﺮﻳﻦ ﻣﻦ أﻗﻞ ﻋﻴﻨﺎت ﻋﺪد ﺽﻤﻦ وذﻟﻚ.ﻟﻠﻤﺠﻤﻮﻋﺔ اﻟﻔﻌﻠﻴﺔ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﻟﺤﺴﺎب أﻣﺎ آﻤﺎﻳﻠﻰ اﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮاف ﻗﻴﻤﺔ ﺣﺴﺎب ﻓﻴﻨﺒﻐﻰ: اﻟﻤﻔﺮداتاﻹﻧﺤﺮافاﻹﻧﺤﺮاف ﻣﺮﺏﻊ ٢١٨ ١٨٤ ١٧٧ ٢١٥ ١٨٦ ١٧٣ ٢٠٩ ١٤٢ ١٥٣ ١٨٧ ١٨١ ١٩٣ ١٤٧ ٢١٣ ٢٣١ ٢٠٠ ٢٢١ +٢٨ -٦ -١٣ +٢٥ -٤ -١٧ +١٩ -٤٨ -٣٧ -٣ -٩ +٣ -٤٣ +٢٣ +٤١ +١٠ +٣١ ٧٨٤ ٣٦ ١٦٩ ٦٢٥ ١٦ ٢٨٩ ٣٦١ ٢٣٠٤ ١٣٦٩ ٩ ٨١ ٩ ١٨٤٩ ٥٢٩ ١٦٨١ ١٠٠ ٩٦١ 2 kg/cm25.6 17 11172 ==σ v = 25.6 (100) / 190 = 13.5 % fcu = fm (1-kv) fcu = 190 (1-1.64 x 0.135) = 147.9 kg/cm2 < 200 ∴<l^e^Šu<ì^Âc<àÓµæ<˜Ê†i<íÞ^‰†¤] <ìˆéº< íÚæ^ÏÚ< Œ^‰_< î×Â< ÜéÛ’jÖ] MPSzU<àÚ<ğ÷‚e<¼ÏÊ<NLLsÒ<K܉NJ =190=11172
8.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ٩٦ ٦-٧ﺍﳌﻔﺮﺩﺓ نﺎﺕﺎﻟﺒﻴﺍ ﺠﻤﻟﻤﻮﻋﺔ
ﺋﻰﺎﺍﻹﺣﺼ ﻟﺘﺤﻠﻴﻞﺍ_____________________________ 6-7-1 @cM½a@ÁìnAverageX x n = ∑ ﻣﻤﻴﺰاﺗﻪ:ًﺎﺷﻴﻮﻋ اﻟﻤﻘﺎﻳﻴﺲ أآﺜﺮ هﻮ-اﻟﻔﻬﻢ ﺳﻬﻞ-اﻹﻋﺘﺒﺎر ﻓﻰ اﻟﺒﻴﺎﻧﺎت ﺝﻤﻴﻊ ﻳﺄﺧﺬ. ﻋﻴــﻮﺏﻪ:اﻟﻤﺘﻄﺮﻗﺔ ﺏﺎﻟﻘﻴﻢ ﻳﺘﺄﺛﺮ. ﻣﺜﺎل:١٩،٢٠،٢١⇐اﻟﻤﺘﻮﺳﻂ=٢٠ ٤،١٩،٢٠،٢١⇐اﻟﻤﺘﻮﺳﻂ=١٦ ١٩،٢٠،٢١،٧٦⇐اﻟﻤﺘﻮﺳﻂ=٣٤ lMÁîìÛa@@@Median هﻮ أو ﻣﻨﻬﺎ اﻷآﺒﺮ اﻟﺒﻴﺎﻧﺎت ﻋﺪد ﻳﺴﺎوى ﻣﻨﻬﺎ اﻷﻗﻞ اﻟﺒﻴﺎﻧﺎت ﻋﺪد ﻋﻨﺪهﺎ اﻟﺘﻰ اﻟﻘﻴﻤﺔ هﻮ ﻗﻴﻤﺔﺗﺮﺗﻴﺒﺔ اﻟﺬى اﻟﺤﺪ( N 1 2 ) +. ﻣﻤـﻴﺰاﺗﻪ:اﻟﻤﺘﻄﺮﻓﺔ ﺏﺎﻟﻘﻴﻢ ﻳﺘﺄﺛﺮ ﻻ-ﺏﺴﻬﻮﻟﺔ ﻓﻬﻤﻪ ﻳﻤﻜﻦ. ﻋﻴــﻮﺏﻪ:ﺣﺴﺎﺏﻪ ﻳﻤﻜﻦ ﺣﺘﻰ ًﺎﺗﺼﺎﻋﺪﻳ أو ًﺎﺗﻨﺎزﻟﻴ اﻟﺒﻴﺎﻧﺎت ﺗﺮﺗﻴﺐ إﻟﻰ ﻳﺤﺘﺎج. ﻣﺜﺎل:٩،٥،١٠،١٢،١٥⇐اﻟﻮﺳﻴﻂ=١٠ ١٣،١٧،١١،١٩،١٠⇐اﻟﻮﺳﻴﻂ=١٣ xM@Þaìä½a@Mode@ اﻟﻤﺠﻤﻮﻋﺔ ﻓﻰ ًاﺗﻜﺮار اﻷآﺜﺮ اﻟﻘﻴﻤﺔ هﻮ اﻟﻤﻨﻮال. ﻣﻤﻴﺰاﺗﻪ:اﻟﻤﺘﻄﺮﻓﺔ ﺏﺎﻟﻘﻴﻢ ﻳﺘﺄﺛﺮ ﻻ-ﺏﺴﻬﻮﻟﺔ ﻓﻬﻤﺔ ﻳﻤﻜﻦ)اﻟﻮﺳﻴﻂ ﻣﺜﻞ.( ﻋﻴــﻮﺏﻪ:ﻻ اﻷﺣﻴﺎن ﻣﻦ آﺜﻴﺮ ﻓﻰوﻓﻰ ﻣﺮة ﻣﻦ أآﺜﺮ اﻟﻌﺪد ﻳﺘﻜﺮر ﻻ ﺣﻴﺚ ﻣﻨﻮال ﻳﻮﺝﺪﺣﺎﻻت ﻣﻨﻮال ﻣﻦ أآﺜﺮ هﻨﺎك ﻳﻜﻮن أﺧﺮى.
9.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ٩٧ 6-7-2 أ-اﻟﻤﺪى=اﻟﻘﺼﻮى اﻟﻘﻴﻤﺔ-اﻟﺼﻐﺮى
اﻟﻘﻴﻤﺔ. ب-اﻻﻧﺤﺮافاﻟﻤﻌﻴﺎري)σ(اﻟﻤﻔﺮدات إﻧﺤﺮاف ﻣﺮﺏﻊ ﻟﻤﺘﻮﺳﻂ اﻟﺘﺮﺏﻴﻌﻰ اﻟﺠﺬر هﻮاﻟﻤﺘﻮﺳﻂ ﻋﻦ. σ = −∑(x x) n 2 واﻻﻧﺤﺮافاﻟﻤﻌﻴﺎرياﻟﻤﻔﺮدات ﺏﻘﻴﻢ وﻳﺘﺄﺛﺮ اﻟﻤﻔﺮدات وﺣﺪات ﻧﻔﺲ ﻟﻪ. ج-اﻹﺧﺘﻼف ﻣﻌﺎﻣﻞاﻟﻨﺴﺒﻰ اﻹﻧﺤﺮاف أو اﻟﻨﺴﺒﻰ ﻟﻠﺘﺸﺘﺖ ﻣﻘﻴﺎس هﻮ. v X = σ :, vσ : ١-ﻣﻌﺘﺎدة ﺧﺮﺳﺎﻧﺔ٢٠٠،٢١٠،٢٢٠آﺞ/ﺳﻢ٢. ٢-اﻟﻤﻘﺎوﻣﺔ ﻋﺎﻟﻴﺔ ﺧﺮﺳﺎﻧﺔ١٠٠٠،١٠٥٠،١١٠٠آﺞ/ﺳﻢ٢. اﻟﺤـــــــــــﻞ اﻷوﻟﻰ اﻟﻤﺠﻤﻮﻋﺔ:اﻟﻤﺘﻮﺳﻂ) =٢٠٠+٢١٠+٢٢٠(÷٣=٢١٠آﺞ/ﺳﻢ٢ ( ) 2 222 kg/cm8.16 3 (0)10)(10 = +−+ =σ v 8.16 210 x 100 3.89 %= = اﻟاﻟﺜﺎﻧﻴﺔ ﻤﺠﻤﻮﻋﺔ:اﻟﻤﺘﻮﺳﻂ) =١٠٠٠+١٠٥٠+١١٠٠(÷٣=١٠٥٠آﺞ/ﺳﻢ٢ ( ) 2 222 kg/cm40.82 3 (0)50)(50 = +−+ =σ v 40.82 1050 x 100 3.89 %= =
10.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ٩٨ ﺷﻜﻞ)٦-٦(ﺍﳌﺨﺘﻠﻔﺔ ﻟﺘﻮﺍﺀﻹﺍ ﺃﺷﻜﺎﻝ 6-7-3
-:اﻟ ﺣﻮل ﻣﺘﻤﺎﺛﻞ اﻟﺘﻮزﻳﻊ آﺎن إذا ًاﺻﻔﺮ اﻹﻟﺘﻮاء ﻳﻜﻮناﻟﺤﺴﺎﺏﻰ ﻮﺳﻂ اﻟﻮﺳﻂ ﻳﻜﻮن ﻋﻨﺪﻣﺎ اﻹﻟﺘﻮاء ﻣﻮﺝﺐ اﻟﺘﻮزﻳﻊ وﻳﻜﻮن<اﻟﻮﺳﻴﻂ<اﻟﻤﻨﻮال اﻟﺘﻮزﻳﻊ وﻳﻜﻮنﺳﺎﻟﺒﺎﻳﻜﻮن ﻋﻨﺪﻣﺎ اﻹﻟﺘﻮاءاﻟﻮﺳﻂ>اﻟﻮﺳﻴﻂ>اﻟﻤﻨﻮال ٣)اﻟﻤﺘﻮﺳﻂ-اﻟﻮﺳﻴﻂ( ا ﻣﻌﺎﻣﻞﻹﻟﺘﻮاء ________________ = σ - اﻟﺘﻔﺮﻃﺢ ﻣﻌﺎﻣﻞ= 4 4 )x(x σ ∑ − اﻟﻤﻌﺘﺪل ﻟﻠﺘﻮزﻳﻊ اﻟﺘﻔﺮﻃﺢ ﻣﻌﺎﻣﻞ=٣ ,, ,, ,,اﻟﻤﻔﺮﻃﺢ>٣ ,, ,, ,,اﻟﻤﺪﺏﺐ<٣ ﺷﻜﻞ)٦-٧(ﺃﺷﻜﺎﻟﺘﻔﺮﻃﺢﺍ ﺣﻴﺚ ﻣﻦ ﻳﺔﺭﻟﺘﻜﺮﺍﺍ ﻳﻌﺎﺕﺯﻟﺘﻮﺍ ﻝ. ﻣﻔﺮﻃﺢ ﻣﻌﺘﺪل ﻣـﺪﺏﺐ اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔfm ﻣﺘﻤﺎﺛﻞ ﺗﻮزﻳﻊ اﻹﻟﺘﻮاء ﻣﻮﺝﺐ ﺗﻮزﻳﻊ ﺘﻭﺍﻹﻟﺘﻭﺍﺀ ﺴﺎﻟﺏ ﺯﻴﻊ اﻟﻮﺳﻂ=اﻟﻮﺳﻴﻂ=اﻟﻤﻨﻮال اﻟﻮﺳﻂ<اﻟﻮﺳﻴﻂ<اﻟﻤﻨﻮال اﻟﻤﻨﻮال<اﻟﻮﺳﻴﻂ<اﻟﻮﺳﻂ Frequencyاﻟﺘﻜﺮار
11.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ٩٩ :
: )410-412-395-415/2( )385-402-305-540/2( 90% . اﻟﺤــــــــــﻞ ﻣﺮﺗﺒﺔ اﻟﻤﻔﺮدات٣٩٥،٤١٠،٤١٢،٤١٥٣٠٥،٣٨٥،٤٠٢،٥٤٠ اﻟﻤﺘﻮﺳﻂآﺞ/ﺳﻢ٢٤٠٨٤٠٨ اﻟﻤﺪىآﺞ/ﺳﻢ٢٢٠)٤٫٩%اﻟﻤﺘﻮﺳﻂ ﻣﻦ(٢٣٥)٥٧٫٦%اﻟﻤﺘﻮﺳﻂ ﻣﻦ( اﻹﻧﺤﺮاﻓﺎتآﺞ/ﺳﻢ٢-١٣،+٢،+٤،+٧-١٠٣،-٢٣،-٦،١٣٢ اﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮافآﺞ/ﺳﻢ٢٧٫٧٨٤٫٦ اﻹﺧﺘﻼف ﻣﻌﺎﻣﻞ%١٫٩٢٠٫٧ اﻟﺠﻮدة ﻓﻰ اﻟﺘﺤﻜﻢ درﺝﺔﻣﻤﺘﺎزةردﻳﺌﺔ آﺞ اﻟﻤﻤﻴﺰة اﻟﻤﻘﺎوﻣﺔ/ﺳﻢ٢٣٩٥٢٦٩ ﺛﻘﺔ درﺝﺔ ﺗﻌﻄﻰ اﻟﺘﻰ اﻟﻘﻴﻤﺔ٩٠%اﻟﺜﺎﻧﻴﺔ اﻟﻤﺠﻤﻮﻋﺔ ﻓﻰ: fcu = fm (1 - kv ) = 408 ( 1 - 1.28 * 0.207) ≅ 300 kg/cm2 ********
12.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ١٠٠ ٦-٨نﺎﺕﺎﻟﺒﻴــﺍ ﻳـﻊﺯﺗﻮ__________ اﻟﺒﻴﺎﻧﺎت ﻣﻦ
ﻣﺠﻤﻮﻋﺔ ﻋﻨﺪﻧﺎ آﺎن إذااﻟﻔﻨﻴﺔ اﻟﻤﺪﻟﻮﻻت إﺳﺘﺨﻼص وﻣﻄﻠﻮب ًﺎﻧﺴﺒﻴ اﻟﻌﺪد آﺜﻴﺮة ﺏﺈﺗﺒﺎع ﻓﺌﺎت أو ﺷﺮاﺋﺢ هﻴﺌﺔ ﻋﻠﻰ ﺗﻮزﻳﻌﻬﺎ ﻳﻤﻜﻦ ﻓﺈﻧﻪ ﺗﺠﺎﻧﺴﻬﺎ وﻣﺪى اﻟﻤﺠﻤﻮﻋﺔ هﺬﻩ ﻋﻠﻰ واﻟﺤﻜﻢ اﻵﺗﻴﺔ اﻟﺨﻄﻮات: ١-اﻟﻘﺮاءات ﺝﻤﻴﻊ داﺧﻠﺔ ﻳﻘﻊ اﻟﺬى اﻟﻤﺪى ﻧﻮﺝﺪ)اﻟﻤﺪى=ﻗﻴﻤﺔ أآﺒﺮ-ﻗﻴﻤﺔ أﻗﻞ( ٢-ﻳﺠﻌﻞ اﻟﺬى اﻟﺸﺮﻳﺤﺔ ﻋﺮض ﻧﺤﺪدداﺋﻤﺎ اﻟﺸﺮاﺋﺢ ﻋﺪد=١٠±٢ اﻟﻤـــﺪى اﻟﺸﺮاﺋﺢ ﻋﺪد= ____________ +١ اﻟﺸﺮﻳﺤﺔ ﻋﺮض اﻟﻤــﺪى اﻟﺸﺮﻳﺤﺔ ﻋﺮض أو ___________ = اﻟﺸﺮاﺋﺢ ﻋﺪد-١ ﻣﺜﺎل:اﻟﻤﺪى آﺎن إذا=١٦٠آﺞ/ﺳﻢ٢اﻟﺸﺮﻳﺤﺔ ﻋﺮض ﻓﺈن=١٦٠÷)اﻟﺸﺮاﺋﺢ ﻋﺪد-١( اﻟﺸﺮاﺋﺢ ﻋﺪد ﻧﺄﺧﺬ ﻣﻤﻜﻦ إذن=٩وﻋﺮﺽﻬﺎ٢٠آﺞ/ﺳﻢ٢ اﻟﺸﺮاﺋﺢ ﻋﺪد ﻧﺄﺧﺬ أو=١١وﻋﺮﺽﻬﺎ١٦آﺞ/ﺳﻢ٢ اﻟﻤﺪى آﺎن إذا أﻣﺎ=١٦٣آﺞ/ﺳﻢ٢اﻟـ ﺗﻮزﻳﻊ ﻳﻤﻜﻨﻨﺎ اﻟﺤﺎﻟﺔ هﺬﻩ ﻓﻔﻰ٣ﺷﺮﻳﺤﺔ أول ﻓﻰ اﻟﻔﺮوق هﺬﻩ ﻟﻤﺜﻞ داﺋﻤﺎ زﻳﺎدة ﺷﺮﻳﺤﺔ ﻋﻨﺪﻧﺎ أﻧﻨﺎ ﺏﻤﻌﻨﻰ ﺷﺮﻳﺤﺔ وﺁﺧﺮ)ﺷﺮﻳﺤﺔ ﻧﺼﻒ ﻧﻀﻊ اﻟﻨﻬﺎﻳﺔ ﻓﻰ ﺷﺮﻳﺤﺔ وﻧﺼﻒ اﻷول ﻓﻰ(ﺏﻌﺪ ﻓﻴﻤﺎ ﺷﺎﻣﻞ ﻣﺜﺎل ﻓﻰ ذﻟﻚ وﺳﻨﺮى. ٣-أ ﺷﺮاﺋﺢ ﺻﻮرة ﻋﻠﻰ اﻷرﻗﺎم ﺝﻤﻴﻊ ﻧﻀﻊ وﻓﻴﺔ ﻣﺨﺘﺼﺮ ﺝﺪول ﻧﻌﻤﻞﻓﺌﺎت و اﻟﺸﺮﻳﺤﺔ رﻗﻢاﻟﺸﺮﻳﺤﺔ ﺣﺪوداﻟﻤﺘﻮﺳﻂاﻟﺘﻜﺮار ١ ٢ : : ٩ ٢٤٥-٢٥٥ ٢٥٥-٢٦٥ : : ٣٢٥-٣٣٥ ٢٥٠ ٢٦٠ : : ٣٣٠ ٤ ٦ : : ٢ ٤-اﻵﺗﻴﺔ اﻟﺒﻴﺎﻧﻴﺔ اﻟﺮﺳﻮﻣﺎت إﻟﻰ اﻟﺴﺎﺏﻖ اﻟﺠﺪول ﻳﺘﺮﺝﻢ: أ-اﻟﺘﻜﺮار ﻗﻀﺒﺎن ﻟﻮﺣﺔ)واﻟﺘﻜـــﺮا اﻟﻤﺘﻮﺳــــﻂ ﺏﻴﻦر( ب-اﻟﺘﻜﺮارى اﻟﻤﻨﺤﻨﻰ أو اﻟﺘﻜﺮار ﻣﻀﻠﻊ( ,, ,, ,, ) ج-اﻟﺘﻜﺮار هﻴﺴﺘﻮﺝﺮام)واﻟﺘﻜﺮار اﻟﺸﺮﻳﺤﺔ ﺣﺪود ﺏﻴﻦ( د-اﻟﺘﺠﻤﻴﻌﻰ اﻟﺘﻜﺮارى اﻟﻤﻨﺤﻨﻰ( ,, ,, ,, ,, ,, )
13.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ١٠١ 0 4 8 12 16 20 24 250 270 290 310 330 350 370 390 410 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ
ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮار 0 4 8 12 16 20 24 250 270 290 310 330 350 370 390 410 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮار أ-ب اﻟﺘﻜﺮار ﻗﻀﺒﺎن ﻟﻮﺣﺔ-اﻟﺘﻜﺮار هﻴﺴﺘﻮﺝﺮام 0 4 8 12 16 20 24 250 270 290 310 330 350 370 390 410 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮار 0 4 8 12 16 20 24 250 270 290 310 330 350 370 390 410 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮار ج-اﻟﺘﻜـــﺮار ﻣﻀﻠﻊد-اﻟﺘﻜــــﺮاري اﻟﻤﻨﺤﻨﻰ ﺷﻜﻞ)٦-٨(ﻳﺔﺭﻟﺘﻜﺮﺍﺍ ﻳﻌﺎﺕﺯﻟﻠﺘﻮ ﺍﳌﺨﺘﻠﻔﺔ نﻴﺔﺎﻟﺒﻴﺍ ﺍﻷﺷﻜﺎﻝ. 420 400 380 360 340 320 300 280 260 240
14.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ١٠٢ 0 10 20 30 40 50 60 70 80 90 100 240 260 280 300 320 340 360 380 400 420 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ
ﻣﻘﺎوﻣﺔ ﻟﻠﻔﺌﺔاﻷدﻧﻰاﻟﺤﺪﻣﻦأﻗﻞاﻟﻘﺮاءاتﻟﻌﺪداﻟﻤﺌﻮﻳﺔاﻟﻨﺴﺒﺔ ﺷﻜﻞ)٦-٩(ﻟﺘﺠﻤﻴﻌﻰﺍ ﻟﺘﻜﺮﺍﺭﻯﺍ ﺍﳌﻨﺤﻨﻰ. : 250 251/2 348/2 . ـــــــــــــــــــــــــــ اﻟﻤـــﺪى اﻟﺸﺮاﺋﺢ ﻋﺪد= __________ +١ اﻟﺸﺮﻳﺤﺔ ﻋﺮض اﻟﻤﺪى=٣٤٨-٢٥١=٩٧آﺞ/ﺳﻢ٢ اﻟﻤﺪى أن ًﻻﺝﺪ ﻧﻔﺘﺮض هﻨﺎ=١٠٠ﻣﻦ ًﻻﺏﺪ٩٧ﻓﻘﻂ اﻟﺸﺮاﺋﺢ ﺗﻨﻈﻴﻢ ﺣﺎﻟﺔ ﻓﻰ وذﻟﻚ. اﻟﻤﺪى أن ﺏﻤﻌﻨﻰ) =٣٥٠-٢٥٠(وﻧﺼﻒ اﻷوﻟﻰ اﻟﺸﺮﻳﺤﺔ ﻧﺼﻒ ﻓﻰ ﻓﺮق أى ﻧﻀﻊ ﺏﺤﻴﺚ اﻷﺧﻴﺮة اﻟﺸﺮﻳﺤﺔ. ١٠٠ اﻟﺸﺮاﺋﺢ ﻋﺪد= __________ +١ اﻟﺸﺮﻳﺤﺔ ﻋﺮض ∴اﻟﺸﺮﻳﺤﺔ ﻋﺮض ﻧﺄﺧﺬ=١٠آﺞ/ﺳﻢ٢واﻟﻌﺪد=١١ﺷﺮﻳﺤﺔ ٥٠%ﺛﻘﺔ)اﻟﻮﺳﻴﻂ( ٩٠%ﺛﻘﺔ
15.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ١٠٣ -ﺷﺮﻳﺤﺔ أول ﺏﺪاﻳﺔ=ﻗﻴﻤﺔ
أﺻﻐﺮ)ﻣﻔﺘﺮﺽﺔ(-ﺷﺮﻳﺤﺔ ﻋﺮض ﻧﺼﻒ =٢٥٠-٥=٢٤٥آﺞ/ﺳﻢ٢ ∴اﻷوﻟﻰ اﻟﺸﺮﻳﺤﺔ ﺣﺪود=٢٤٥إﻟﻰ٢٥٥ -اﻷﺧﻴﺮة اﻟﺸﺮﻳﺤﺔ ﻧﻬﺎﻳﺔ=ﻗﻴﻤﺔ أآﺒﺮ)ﻣﻔﺘﺮﺽﺔ+ (ﺷﺮﻳﺤﺔ ﻋﺮض ﻧﺼﻒ =٣٥٠+٥=٣٥٥آﺞ/ﺳﻢ٢ ∴اﻷﺧﻴﺮة اﻟﺸﺮﻳﺤﺔ ﺣﺪود=٣٤٥إﻟﻰ٣٥٥ ********* : : اﻟﻔـﺌﺔ رﻗـﻢ١٢٣٤٥٦٧٨٩١٠ اﻟﻔﺌﺔ ﺣﺪود آﺞ/ﺳﻢ٢ ٢١٥ ٢٢٥ ٢٢٥ ٢٣٥ ٢٣٥ ٢٤٥ ٢٤٥ ٢٥٥ ٢٥٥ ٢٦٥ ٢٦٥ ٢٧٥ ٢٧٥ ٢٨٥ ٢٨٥ ٢٩٥ ٢٩٥ ٣٠٥ ٣٠٥ ٣١٥ اﻟﺘﻜـــﺮار١٦٣١٥٢٨١١٠٥٩٨٦٧٣٦٢٢١٥ إﺛﻢ اﻟﺘﻜﺮارى اﻟﺘﻮزﻳﻊ وﻣﻨﺤﻨﻰ اﻟﺘﺠﻤﻴﻌﻰ اﻟﺘﻜﺮار وﻣﻨﺤﻨﻰ اﻟﺘﻜﺮار هﻴﺴﺘﻮﺝﺮام ﻣﻦ ًﻼآ رﺳﻢ ودرﺝﺔ إﻧﺘﻈﺎﻣﻬﺎ وﻣﺪى اﻟﺨﺮﺳﺎﻧﺔ هﺬﻩ إﻧﺘﺎج ﻣﺴﺘﻮى ﻣﻌﺮﻓﺔ ﻣﻨﻬﺎ ﻳﻤﻜﻦ اﻟﺘﻰ اﻟﻤﺪﻟﻮﻻت إﺳﺘﺨﻠﺺ ﺝﻮدﺗﻬﺎ.ﺛﻘﺔ درﺝﺔ ﻋﻨﺪ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ أﻳﻀﺎ إﺣﺴﺐ٩٠%،٩٥.% ـــــــــــــــــــــــــــ اﻵﺗﻰ اﻟﺠﺪول ﻧﻜﻮن ًﻻأو:______________ اﻷدﻧﻰ اﻟﺤﺪﻟﻠﺸﺮﻳﺤﺔ٢١٥٢٢٥٢٣٥٢٤٥٢٥٥٢٦٥٢٧٥٢٨٥٢٩٥٣٠٥٣١٥ أﻗﻞ اﻟﻘﺮاءات ﻋﺪد اﻷدﻧﻰ اﻟﺤﺪ ﻣﻦ ﺻﻔﺮ١٦٤٧٩٩١٨٠٢٨٥٣٨٣٤٥٠٤٨٦٥٠٨٥٢٣ اﻟﻘﺮاءات ﻋﺪد%ﺻﻔﺮ٣٫١٩١٨٫٩٤٣٫٣٥٤٫٥٧٣٫٢٨٦٫٠٩٢٫٢٩٧٫١١٠٠
16.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ١٠٤ 15 22 36 67 98 105 81 52 16 31 0 20 40 60 80 100 120 220 230 240 250 260 270 280 290 300 310 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ
ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮار ﻟﺘﻜﺮﺍﺭﺍ ﻫﻴﺴﺘﻮﺟﺮﺍﻡ 98 67 36 16 31 52 81 15 22 105 0 20 40 60 80 100 120 220 230 240 250 260 270 280 290 300 310 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ ﻣﻘﺎوﻣﺔ اﻟﺘﻜﺮار ﺍﳌﻨﺤﻨﻰﻟﺘﻜﺮﺍﺭﻱﺍ.
17.
@òãbŠ¨a–c@N…Oâbßg@…ì;àª@ ١٠٥ 0 10 20 30 40 50 60 70 80 90 100 215 225 235 245 255 265 275 285 295 305 315 ٢آﺞ/ﺳﻢ -- اﻟﻀﻐﻂ
ﻣﻘﺎوﻣﺔ ﻟﻠﻔﺌﺔاﻷدﻧﻰاﻟﺤﺪﻣﻦأﻗﻞاﻟﻘﺮاءاتﻟﻌﺪداﻟﻤﺌﻮﻳﺔاﻟﻨﺴﺒﺔ ﻳﻊﺯﻟﺘﻮﺍ ﻣﻨﺤﻨﻰﻟﺘﻜﺮﺍﺭﻱﺍﻟﺘﺠﻤﻴﻌﻰﺍ. اﻟﻤﺮآﺰﻳﺔ ﻣﻘﺎﻳﻴﺲ ًﺎﺛﺎﻧﻴ:_____________ ١-اﻟﻤﺘﻮﺳﻂX nx N = ∑ﺣﻴﺚXاﻟﻔﺌﺔ ﻣﺘﻮﺳــﻂ nاﻟﻔﺌﺔ ﺗﻜــــﺮار Nﻟﻠﻌﻴﻨﺎت اﻟﻜﻠﻰ اﻟﻌﺪد 220x16 230x31 ............... 310x15 523 + + +=٢٦٣٫٠٨آﺞ/ﺳﻢ٢ ٢-اﻟﻮﺳــﻴﻂ=٢٦٢آﺞ/ﺳﻢ٢)اﻟﺘﺠﻤﻴﻌﻰ اﻟﺘﻜﺮار ﻣﻨﺤﻨﻰ ﻣﻦ( ٣-اﻟﻤﻨــﻮال=٢٦٠آﺞ/ﺳﻢ٢)هﻴﺴﺘ أو اﻟﺘﻜﺮار ﺝﺪول ﻣﻦاﻟﺘﻜﺮار ﻮﺝﺮام( ﻣﻦ اﻷﻗﻞ اﻟﻘﻴﻢ ﻧﺎﺣﻴﺔ ًاﺝﺪ ًﻼﻗﻠﻴ ﻳﻤﻴﻞ أﻧﻪ ﺣﻴﺚ اﻹﻟﺘﻮاء ﻣﻮﺝﺐ اﻟﻤﻨﺤﻨﻰ أن ﻳﺘﻀﺢ هﻨﺎ وﻣﻦ اﻟﻤﺘﻮﺳﻂ. اﻟﻮﺳﻴﻂ=٢٦٢آﺞ/ﺳﻢ٢ ٩٠% ٢٣٦آﺞ/ﺳﻢ٢ ٢٢٩ ٩٥% ٥٠%
18.
@…bÛa@lbjÛaMñ…ì¦a@Áj™@ ١٠٦ اﻟﺘﺸﺘﺖ ﻣﻘﺎﻳﻴﺲ ًﺎﺛﺎﻟﺜ:
___________ ١-اﻟﻤﻌﻴﺎرى اﻻﻧﺤﺮافσ = −∑n(x x) N -1 2 σ = − + − + + − = 16(220 263.8) 31(230 263.8) ........... 15(310 263.8) 523-1 20.5 kg / cm 2 2 2 2 اﻻﻧﺤﺮافاﻟﻤﻌﻴﺎري٢٠٫٥×١٠٠ ٢-اﻹﺧﺘﻼف ﻣﻌﺎﻣﻞ= ____________ = ___________ =٧٫٧٩% اﻟﻤﺘﻮﺳﻂ٢٦٣٫٠٨ ﻟﺘﻘﻴﻴﻢ ﻃﺒﻘﺎ إذنACIﻣﻤﺘﺎز اﻟﺠﻮدة ﺽﺒﻂ ﻓﻰ اﻟﺘﺤﻜﻢ ﻓﺈن ﺗﻌﻄﻰ اﻟﺘﻰ اﻟﻤﻘﺎوﻣﺔ ﻗﻴﻤﺔ ﺣﺴﺎب ًﺎراﺏﻌوﺏﻴﺎﻧﻴﺎ ﺗﺤﻠﻴﻠﻴﺎ ﻣﻌﻴﻨﺔ ﺛﻘﺔ درﺝﺔ: ________________________________________ -: -ﺛﻘﺔ درﺝﺔ٩٠% fcu = fm (1 - kv ) = 263.08 ( 1 - 1.28 * 0.0779) = 236.85 kg/cm2 -ﺛﻘﺔ درﺝﺔ٩٥% fcu = fm (1 - kv ) = 263.08 ( 1 - 1.64 * 0.0779) = 229.47 kg/cm2 -: اﻟﺘﺠﻤﻴﻌﻰ اﻟﺘﻜﺮار ﻣﻨﺤﻨﻰ ﻣﻦ fcu (90%) ≅ 236 kg/cm2 fcu (95%) ≅ 229 kg/cm2 ﻣﻦ ﺏﻜﻞ ﻟﻠﺘﻘﻴﻴﻢ ﻃﺒﻘﺎ ﻓﺈﻧﺔ ﻋﺎﻣﺔ وﺏﺼﻔﻪσ،vﺣﻴﺚ ﻣﻤﺘﺎزة ﺗﻌﺘﺒﺮ اﻟﺠﻮدة ﻓﻰ اﻟﺘﺤﻜﻢ درﺝﺔ ﻓﺈن اﻟﻤﻌﻴﺎرى اﻹﻧﺤﺮاف)σ(ﻣﻦ أﻗﻞ٢٨آﺞ/ﺳﻢ٢اﻹﻧﺤﺮاف ﻣﻌﺎﻣﻞ و(v)ﻣﻦ أﻗﻞ١٠.% اﻟﻤﺘﻮﺳﻂ ﻣﻦ اﻷﻗﻞ اﻟﻘﻴﻢ ﻧﺎﺣﻴﺔ اﻟﻤﻨﺤﻨﻰ ﻓﻰ ًاﺝﺪ ﺧﻔﻴﻒ اﻟﺘﻮاء ﻓﻴﻮﺝﺪ اﻟﻨﺘﺎﺋﺞ إﻧﺘﻈﺎم ﻣﺪى ﻋﻦ أﻣﺎ. ********
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