橋梁抗震計(jì)算書學(xué)習(xí)

1、計(jì)算 : XXX 校核 : XXX 審核 : XXX二零零九年 一二月1. 設(shè)計(jì)規(guī)范1.1. 公路工程技術(shù)標(biāo)準(zhǔn) (JTG B01-2003)1.2. 公路橋涵設(shè)計(jì)通用規(guī)范 (JTG D60-2004)1.3. 公路鋼筋混凝土及預(yù)應(yīng)力混凝土橋涵設(shè)計(jì)規(guī)范 (JTG D62-2004)1.4. 公路橋涵地基與基礎(chǔ)設(shè)計(jì)規(guī)范 (JTG D63-2007)1.5. 公路橋梁抗震設(shè)計(jì)細(xì)則 (JTG/TB 02-01-2008)2. 設(shè)計(jì)資料2.1. 使用程序 : MIDAS/Civil, Civil 2006 ( Release No. 1 )2.2. 截面設(shè)計(jì)內(nèi)力 : 3D2.3. 構(gòu)件類型 : 普通混凝

2、土橋梁2.4. 地震作用等級(jí) : E1 作用3. 主要材料指標(biāo)3.1. 混凝土強(qiáng)度等級(jí)彈性模量 (MPa)容重(kN/m 3)線膨脹系數(shù)標(biāo)準(zhǔn)值設(shè)計(jì)值f ck (MPa)ftk (MPa)fcd (MPa)ftd (MPa)C2528000.0025.001.000e-00516.701.7811.501.23C3030000.0025.001.000e-00520.102.0113.801.39C4032500.0025.001.000e-00526.802.4018.401.653.2. 普通鋼筋普通鋼筋彈性模量(MPa)容重(kN/m 3 )fsk(MPa)fsd(MPa)f'sd

3、 (MPa)yHRB335200000.0076.98335.00280.00280.000.001675R235210000.0076.98235.00195.00195.000.0011194. 模型簡介4.1. 單元數(shù)量 : 單元 42 個(gè)4.2. 節(jié)點(diǎn)數(shù)量 : 112 個(gè)4.3. 邊界條件數(shù)量 : 6 個(gè)4.4. 施工階段 : 1 個(gè)步驟名稱結(jié)構(gòu)組邊界組荷載組激活鈍化激活鈍化激活鈍化CS1結(jié)構(gòu)組 1-邊界組 1-荷載組 1-5. 荷載組合說明5.1. 荷載工況說明5.1.1. 靜力荷載工況號(hào)名稱類型描述1自重施工階段荷載 (CS)2二期恒載施工階段荷載 (CS)5.1.2. 反應(yīng)譜荷載

4、工況號(hào)名稱反應(yīng)譜函數(shù)1XE1_D 類橋梁 _水平向2YE1_D 類橋梁 _水平向3ZE1_D 類橋梁 _豎向5.2. 荷載組合說明5.2.1. 荷載工況名稱名稱描述cSH收縮二次 (CS)cD恒荷載 (CS)cEL施工荷載 (CS)SUM合計(jì)(CS)cTP鋼束一次 (CS)cCR徐變二次 (CS)cTS鋼束二次 (CS)RS3ZRS2YRS1X5.2.2. 荷載組合名稱激活彈性描述cLCB3承載能力極限狀態(tài)No偶然組合: E(SRSS)cLCB4承載能力極限狀態(tài)No偶然組合 : 1.0(cD)+1.0cLCB3cLCB5承載能力極限狀態(tài)No偶然組合 : 1.0(cD)-1.0cLCB36. 驗(yàn)

5、算結(jié)果表格6.1. 橋墩單元強(qiáng)度驗(yàn)算單元位 置組合 名 稱類型驗(yàn)x 算 (mm)rNd (kN)e (mm)e' (mm)Nn (kN)28IcLCB4軸心 -FxminOK0.000826.8860.0000.00025115.08828IcLCB4偏心 - Fxmin(My)OK0.000826.886629.723570.27710764.87828IcLCB4偏心 - MymaxOK0.000826.886629.723570.27710764.87828IcLCB5偏心 -MyminOK0.0001266.564619.232580.76816637.23628JcLCB4軸

6、心 -FxminOK0.000826.8860.0000.00025115.08828JcLCB4偏心 - Fxmin(My)OK0.000826.886652.437547.56322837.54528JcLCB4偏心 - MymaxOK0.000826.886652.437547.56322837.54528JcLCB5偏心 -MyminOK0.0001266.564633.945566.05524232.88829IcLCB4軸心 -FxminOK0.000826.8120.0000.00025115.08829IcLCB4偏心 - Fxmin(My)OK0.000826.812652.

7、462547.53822826.44129IcLCB4偏心 - MymaxOK0.000826.812652.462547.53822826.44129IcLCB5偏心 -MyminOK0.0001266.638633.957566.04324232.88829JcLCB4軸心 -FxminOK0.000826.8120.0000.00025115.08829JcLCB4偏心 - Fxmin(My)OK0.000826.812675.905524.09522293.53629JcLCB4偏心 - MymaxOK0.000826.812675.905524.09522293.53629JcLCB

8、5偏心 -MyminOK0.0001266.638649.144550.85624232.88830IcLCB4軸心 -FxminOK0.000826.7430.0000.00025115.08830IcLCB4偏心 - Fxmin(My)OK0.000826.743675.931524.06922293.53630IcLCB4偏心 - MymaxOK0.000826.743675.931524.06922293.53630IcLCB5偏心 -MyminOK0.0001266.707649.154550.84624232.88830JcLCB4軸心 -FxminOK0.000826.7430.

9、0000.00025115.08830JcLCB4偏心 - Fxmin(My)OK0.000826.743699.813500.18721804.83730JcLCB4偏心 - MymaxOK0.000826.743699.813500.18721804.83730JcLCB5偏心 -MyminOK0.0001266.707664.626535.37418530.22331IcLCB4軸心 -FxminOK0.000826.6800.0000.00025115.08831IcLCB4偏心 -Fxmin(My)OK0.000826.680699.838500.16221799.41131IcLC

10、B4偏心 - MymaxOK0.000826.680699.838500.16221799.41131IcLCB5偏心 -MyminOK0.0001266.770664.634535.36618527.92031JcLCB4軸心 -FxminOK0.000826.6800.0000.00025115.08831JcLCB4偏心 - Fxmin(My)OK0.000826.680724.044475.95617545.35231JcLCB4偏心 - MymaxOK0.000826.680724.044475.95617545.35231JcLCB5偏心 -MyminOK0.0001266.770

11、680.315519.68522293.53632IcLCB4軸心 -FxminOK0.000826.6230.0000.00025115.08832IcLCB4偏心 -Fxmin(My)OK0.000826.623724.067475.93317542.08532IcLCB4偏心 - MymaxOK0.000826.623724.067475.93317542.08532IcLCB5偏心 -MyminOK0.0001266.827680.321519.67922293.53632JcLCB4軸心 -FxminOK0.000826.6230.0000.00025115.08832JcLCB4偏

12、心 - Fxmin(My)OK0.000826.623748.538451.46220011.06732JcLCB4偏心 - MymaxOK0.000826.623748.538451.46220011.06732JcLCB5偏心 -MyminOK0.0001266.827696.173503.82722293.53633IcLCB4軸心 -FxminOK0.000826.5710.0000.00025115.08833IcLCB4偏心 - Fxmin(My)OK0.000826.571748.559451.44120011.06733IcLCB4偏心 - MymaxOK0.000826.57

13、1748.559451.44120011.06733IcLCB5偏心 -MyminOK0.0001266.879696.177503.82322293.53633JcLCB4軸心 -FxminOK0.000826.5710.0000.00025115.08833JcLCB4偏心 - Fxmin(My)OK0.000826.571773.259426.74117725.41333JcLCB4偏心 - MymaxOK0.000826.571773.259426.74117725.41333JcLCB5偏心 -MyminOK0.0001266.879712.177487.82319401.44134

14、IcLCB4軸心 -FxminOK0.000826.5240.0000.00025115.08834IcLCB4偏心 - Fxmin(My)OK0.000826.524773.278426.72217723.45634IcLCB4偏心 -OK0.000826.524773.278-17723.456Mymax426.72234IcLCB5偏心 -MyminOK0.0001266.926712.179487.82119401.09634JcLCB4軸心 -FxminOK0.000826.5240.0000.00025115.08834JcLCB4偏心 - Fxmin(My)OK0.000826.

15、524798.189401.81117476.93434JcLCB4偏心 - MymaxOK0.000826.524798.189401.81117476.93434JcLCB5偏心 -MyminOK0.0001266.926728.315471.68520011.06735IcLCB4軸心 -FxminOK0.000826.8830.0000.00025115.08835IcLCB4偏心 - Fxmin(My)OK0.000826.883717.898482.10218460.07635IcLCB4偏心 - MymaxOK0.000826.883717.898482.10218460.076

16、35IcLCB5偏心 -MyminOK0.0001266.567677.143522.85722293.53635JcLCB4軸心 -FxminOK0.000826.8830.0000.00025115.08835JcLCB4偏心 -Fxmin(My)OK0.000826.883796.901403.09917476.93435JcLCB4偏心 - MymaxOK0.000826.883796.901403.09917476.93435JcLCB5偏心 -MyminOK0.0001266.567728.836471.16420011.06736IcLCB4軸心 -FxminOK0.000826

17、.8090.0000.00025115.08836IcLCB4偏心 -Fxmin(My)OK0.000826.809796.922403.07817476.93436IcLCB4偏心 - MymaxOK0.000826.809796.922403.07817476.93436IcLCB5偏心 -MyminOK0.0001266.641728.831471.16920011.06736JcLCB4軸心 -FxminOK0.000826.8090.0000.00025115.08836JcLCB4偏心 -Fxmin(My)OK0.000826.809876.073323.92714747.4163

18、6JcLCB4偏心 - MymaxOK0.000826.809876.073323.92714747.41636JcLCB5偏心 -MyminOK0.0001266.641780.612419.38817003.75037IcLCB4軸心 -FxminOK0.000826.7410.0000.00025115.08837IcLCB4偏心 -Fxmin(My)OK0.000826.741876.100323.90014747.41637IcLCB4偏心 - MymaxOK0.000826.741876.100323.90014747.41637IcLCB5偏心 -MyminOK0.0001266

19、.709780.605419.39517004.43137JcLCB4軸心 -FxminOK0.000826.7410.0000.00025115.08837JcLCB4偏心 -Fxmin(My)OK0.000826.741955.337244.66311883.16137JcLCB4偏心 - MymaxOK0.000826.741955.337244.66311883.16137JcLCB5偏心 -MyminOK0.0001266.709832.436367.56416279.20779IcLCB4軸心 -FxminOK0.000826.6780.0000.00025115.08879IcL

20、CB4偏心 - Fxmin(My)OK0.000826.678955.368244.63211883.16179IcLCB4偏心 - MymaxOK0.000826.678955.368244.63211883.16179IcLCB5偏心 -MyminOK0.0001266.772832.427367.57316279.86379JcLCB4軸心 -FxminOK0.000826.6780.0000.00025115.08879JcLCB4偏心 - Fxmin(My)OK0.000826.6781034.669165.3319109.13279JcLCB4偏心 - MymaxOK0.00082

21、6.6781034.669165.3319109.13279JcLCB5偏心 -MyminOK0.0001266.772884.293315.70714747.41680IcLCB4軸心 -FxminOK0.000826.6200.0000.00025115.08880IcLCB4偏心 - Fxmin(My)OK0.000826.6201034.702165.2989109.13280IcLCB4偏心 - MymaxOK0.000826.6201034.702165.2989109.13280IcLCB5偏心 -MyminOK0.0001266.830884.282315.71814747.4

22、1680JcLCB4軸心 -FxminOK0.000826.6200.0000.00025115.08880JcLCB4偏心 - Fxmin(My)OK0.000826.6201114.057-85.9438345.03780JcLCB4偏心 - MymaxOK0.000826.6201114.057-85.9438345.03780JcLCB5偏心 -MyminOK0.0001266.830936.177263.82311883.16181IcLCB4軸心 -FxminOK0.000826.5680.0000.00025115.08881IcLCB4偏心 - Fxmin(My)OK0.000

23、826.5681114.091-85.9098344.47881IcLCB4偏心 - MymaxOK0.000826.5681114.091-85.9098344.47881IcLCB5偏心 -MyminOK0.0001266.882936.165263.83511883.16181JcLCB4軸心 -FxminOK0.000826.5680.0000.00025115.08881JcLCB4偏心 - Fxmin(My)OK0.000826.5681193.495-6.5056367.89981JcLCB4偏心 - MymaxOK0.000826.5681193.495-6.5056367.8

24、9981JcLCB5偏心 -MyminOK0.0001266.882988.086211.91411509.72982IcLCB4軸心 -FxminOK0.000826.5220.0000.00025115.08882IcLCB4偏心 -Fxmin(My)OK0.000826.5221193.530-6.4706367.52382IcLCB4偏心 - MymaxOK0.000826.5221193.530-6.4706367.52382IcLCB5偏心 -MyminOK0.0001266.928988.073211.92711510.12082JcLCB4軸心 -FxminOK0.000826

25、.5220.0000.00025115.08882JcLCB4偏心 - Fxmin(My)OK0.000826.5221272.98272.9825615.77182JcLCB4偏心 - MymaxOK0.000826.5221272.98272.9825615.77182JcLCB5偏心 -MyminOK0.0001266.9281040.022159.9789109.1326.2. 蓋梁強(qiáng)度 -抗彎驗(yàn)算單元位置最大/最小組合 名稱類型驗(yàn)算rMu (kN-m)Mn (kN-m)48I最大cLCB4MY-MAXOK0.073706.04548I最小cLCB5MY-MINOK-0.0731396

26、.10548J最大cLCB4MY-MAXOK1.631706.04548J最小cLCB5MY-MINOK-1.6311396.10547I最大cLCB4MY-MAXOK3.682706.04547I最小cLCB5MY-MINOK-3.2101396.10547J最大cLCB4MY-MAXNG-1581.5401396.10547J最小cLCB5MY-MINNG-2445.5221396.10546I最大cLCB4MY-MAXNG-1584.0351396.10546I最小cLCB5MY-MINNG-2447.0061396.10546J最大cLCB4MY-MAXOK22.766706.0454

27、6J最小cLCB5MY-MINOK-21.5581396.10545I最大cLCB4MY-MAXOK1.645706.04545I最小cLCB5MY-MINOK-1.6451396.10545J最大cLCB4MY-MAXOK0.074706.04545J最小cLCB5MY-MINOK-0.0741396.10599I最大cLCB4MY-MAXOK0.073706.04599I最小cLCB5MY-MINOK-0.0731396.10599J最大cLCB4MY-MAXOK1.629706.04599J最小cLCB5MY-MINOK-1.6291396.10598I最大cLCB4MY-MAXOK3.

28、680706.04598I最小cLCB5MY-MINOK-3.2091396.10598J最大cLCB4MY-MAXNG-1581.5351396.10598J最小cLCB5MY-MINNG-2445.5271396.10597I最大cLCB4MY-MAXNG-1584.0331396.10597I最小cLCB5MY-MINNG-2447.0081396.10597J最大cLCB4MY-MAXOK22.766706.04597J最小cLCB5MY-MINOK-21.5581396.10596I最大cLCB4MY-MAXOK1.647706.04596I最小cLCB5MY-MINOK-1.647

29、1396.10596J最大cLCB4MY-MAXOK0.074706.04596J最小cLCB5MY-MINOK-0.0741396.1056.3. 蓋梁強(qiáng)度 -抗剪驗(yàn)算單 元位 置最大 /最 小組合 名 稱類型驗(yàn) 算rVd (kN)Vn (kN)截面 驗(yàn) 算剪力 驗(yàn) 算48I最大cLCB4FZ-MAXOK0.7793775.002OK驗(yàn)算48I最小cLCB5FZ-MINOK-0.7793816.208OK驗(yàn)算48J最大cLCB4FZ-MAXOK0.7793775.002OK驗(yàn)算48J最小cLCB5FZ-MINOK-0.7793816.208OK驗(yàn)算47I最大cLCB4FZ-MAXOK635.

30、0023775.002OK驗(yàn)算47I最小cLCB5FZ-MINOK411.1113816.208OK驗(yàn)算47J最大cLCB4FZ-MAXOK635.0023816.208OK驗(yàn)算47J最小cLCB5FZ-MINOK411.1113816.208OK驗(yàn)算46I最大cLCB4FZ-MAXOK411.0793816.208OK驗(yàn)算46I最小cLCB5FZ-MINOK636.2593816.208OK驗(yàn)算46J最大cLCB4FZ-MAXOK411.0793775.002OK驗(yàn)算46J最小cLCB5FZ-MINOK636.2593816.208OK驗(yàn)算45I最大cLCB4FZ-MAXOK0.786377

31、5.002OK驗(yàn)算45I最小cLCB5FZ-MINOK-0.7863816.208OK驗(yàn)算45J最大cLCB4FZ-MAXOK0.7863775.002OK驗(yàn)算45J最小cLCB5FZ-MINOK-0.7863816.208OK驗(yàn)算99I最大cLCB4FZ-MAXOK0.7783775.002OK驗(yàn)算99I最小cLCB5FZ-MINOK-0.7783816.208OK驗(yàn)算99J最大cLCB4FZ-MAXOK0.7783775.002OK驗(yàn)算99J最小cLCB5FZ-MINOK-0.7783816.208OK驗(yàn)算98I最大cLCB4FZ-MAXOK635.0033775.002OK驗(yàn)算98I最小

32、cLCB5FZ-MINOK411.1093816.208OK驗(yàn)算98J最大cLCB4FZ-MAXOK635.0033816.208OK驗(yàn)算98J最小cLCB5FZ-MINOK411.1093816.208OK驗(yàn)算97I最大cLCB4FZ-MAXOK411.0773816.208OK驗(yàn)算97I最小cLCB5FZ-MINOK636.2603816.208OK驗(yàn)算97J最大cLCB4FZ-MAXOK411.0773775.002OK驗(yàn)算97J最小cLCB5FZ-MINOK636.2603816.208OK驗(yàn)算96I最大cLCB4FZ-MAXOK0.7873775.002OK驗(yàn)算96I最小cLCB5F

33、Z-MINOK-0.7873816.208OK驗(yàn)算96J最大cLCB4FZ-MAXOK0.7873775.002OK驗(yàn)算96J最小cLCB5FZ-MINOK-0.7873816.208OK驗(yàn)算6.4. 基礎(chǔ)強(qiáng)度驗(yàn)算驗(yàn)算單元位置組合名稱驗(yàn)算軸壓 (MPa)Fa (MPa)偏壓 (MPa)Fa (MPa)28IcLCB5OK0.4982.0000.5002.50028IcLCB5OK0.4982.0000.5102.50029IcLCB5OK0.4982.0000.5252.50029IcLCB5OK0.4982.0000.5002.50030IcLCB5OK0.4982.0000.5712.50

34、030IcLCB5OK0.4982.0000.5252.50031IcLCB5OK0.4982.0000.6272.50031IcLCB5OK0.4982.0000.5712.50032IcLCB5OK0.4982.0000.6802.50032IcLCB5OK0.4982.0000.6272.50033IcLCB5OK0.4982.0000.7262.50033IcLCB5OK0.4982.0000.6802.50034IcLCB5OK0.4982.0000.7542.50034IcLCB5OK0.4982.0000.7262.50035IcLCB5OK0.4982.0000.7532.50

35、035IcLCB5OK0.4982.0000.7542.50036IcLCB5OK0.4982.0000.7452.50036IcLCB5OK0.4982.0000.7532.50037IcLCB5OK0.4982.0000.7102.50037IcLCB5OK0.4982.0000.7452.50079IcLCB5OK0.4982.0000.5002.50079IcLCB5OK0.4982.0000.5922.50080IcLCB5OK0.4982.0000.5992.50080IcLCB5OK0.4982.0000.5002.50081IcLCB5OK0.4982.0000.7732.50

36、081IcLCB5OK0.4982.0000.5992.50082IcLCB5OK0.4982.0000.9652.50082IcLCB5OK0.4982.0000.7732.50083IcLCB5OK0.4982.0001.1552.50083IcLCB5OK0.4982.0000.9652.50084IcLCB5OK0.4982.0001.3292.50084IcLCB5OK0.4982.0001.1552.50085IcLCB5OK0.4982.0001.4602.50085IcLCB5OK0.4982.0001.3292.50086IcLCB5OK0.4982.0001.5202.50

37、086IcLCB5OK0.4982.0001.4602.50087IcLCB5OK0.4982.0001.5032.50087IcLCB5OK0.4982.0001.5202.50088IcLCB5OK0.4982.0001.3892.50088IcLCB5OK0.4982.0001.5032.5006.5. 支座厚度(板式橡膠)驗(yàn)算支座編號(hào)驗(yàn)算順橋向變形 (mm)橫橋向變形 (mm)橡膠層總厚度 (mm)1OK16.98168.275330.00002OK16.98198.520830.00006.6. 支座抗滑穩(wěn)定性(板式橡膠支座)驗(yàn)算支座編號(hào)驗(yàn)算順橋向水平力 (kN)橫橋向水平力 (kN

38、)水平力容許值 (kN)1OK17.725968.390878.55032OK17.72618.690478.45846.7. 支座水平承載力(固定盆式支座)驗(yàn)算支座編號(hào)驗(yàn)算順橋向水平力 (kN)橫橋向水平力 (kN)水平力容許值 (kN)3OK74.806468.3908280.00004OK74.80768.6904280.00007. 抗震詳細(xì)計(jì)算過程7.1. 橋墩單元強(qiáng)度驗(yàn)算 :44 單元 i 截面使用階段正截面軸心抗壓承載能力驗(yàn)算 :截面偏心矩為 0, 做軸心抗壓承載力驗(yàn)算 :0*Nd = 826885.72 NNn = 0.90 (fcdA+fsd 'As')=0.

39、90*1.00*(13.80*1767145.87+280.00*12568.00) =25115087.68 N0*Nd 0.90 (fcdA+fsd'As')5.3.1軸, 心受壓滿足要求 . OK44 單元 i 截面 Fx 最小時(shí) (My) 的偏心受壓驗(yàn)算 :e0 = Md/Nd = 24577517.71/826885.72 = 29.72 mme = e0+h/2-as = 1.00*29.72+1500.00/2-150.00 = 629.72 mme' = e0+a-sh' /2 = 1.00*29.72+150.00-1500.00/2 = -5

40、70.28 mmNd = 826885.72 N, 0Nd = 826885.72 N.0Nde = 520708950.58 N.mm, 0Nde' = -471553915.15 N.mmA= 3.10; B= 0.04; C=2.85; D=0.26Nn1 = Ar2fcd+C r2fsd 5.3.9 -1'= 3.10*750.00*750.00*13.80+2.85*0.003556*750.00*750.00*280.00 =25657645.04 NNn2 = (Br3fcd+D gr3fsd')/e0/ 5-.23. 9= (0.04*750.003*1

41、3.80+0.26*0.003556*0.80*750.003*280.00)/29.72/1.00 =10764877.58 N0Nd Nn偏, 心受壓滿足驗(yàn)算要求 . OK.44單元 i截面 My 最大時(shí)的偏心受壓驗(yàn)算 :e0 = Md/Nd = 24577517.71/826885.72 = 29.72 mm e = e0+h/2-as = 1.00*29.72+1500.00/2-150.00 = 629.72 mm e' = e0+a-sh' /2 = 1.00*29.72+150.00-1500.00/2 = -570.28 mmNd = 826885.72 N,

42、0Nd = 826885.72 N.0Nde = 520708950.58 N.mm, 0Nde' = -471553915.15 N.mmA= 3.10; B= 0.04; C=2.85; D=0.26Nn1 = Ar2fcd+C r2fsd 5.3.9-1'= 3.10*750.00*750.00*13.80+2.85*0.003556*750.00*750.00*280.00 =25657645.04 NNn2 = (Br3fcd+D gr3fsd')/e0/ 5-.23. 9= (0.04*750.003*13.80+0.26*0.003556*0.80*750

43、.003*280.00)/29.72/1.00 =10764877.58 N0Nd Nn偏, 心受壓滿足驗(yàn)算要求 . OK.44 單元 i 截面 My 最小時(shí)的偏心受壓驗(yàn)算 :e0 = Md/Nd = 24358340.95/1266564.36 = 19.23 mme = e0+h/2-as = 1.00*19.23+1500.00/2-150.00 = 619.23 mme' = e0+a-sh' /2 = 1.00*19.23+150.00-1500.00/2 = -580.77 mmNd = 1266564.36 N, 0Nd = 1266564.36 N.0Nde =

44、 784296959.88 N.mm, 0Nde' = -735580277.99 N.mmA= 3.10; B= 0.04; C=2.85; D=0.26Nn1 = Ar2fcd+C r2fsd 5.3.9 -1'= 3.10*750.00*750.00*13.80+2.85*0.003556*750.00*750.00*280.00 =25657645.04 NNn2 = (Br3fcd+D gr3fsd')/e0/ 5-.23. 9= (0.04*750.003*13.80+0.26*0.003556*0.80*750.003*280.00)/19.23/1.00

45、 =16637236.11 N0Nd Nn偏, 心受壓滿足驗(yàn)算要求 . OK.44 單元 j 截面使用階段正截面軸心抗壓承載能力驗(yàn)算:截面偏心矩為 0, 做軸心抗壓承載力驗(yàn)算 :0*Nd = 826885.72 NNn = 0.90 (fcdA+fsd'As')=0.90*1.00*(13.80*1767145.87+280.00*12568.00) =25115087.68 N0*Nd 0.90 (fcdA+fsd'As').53.1, 軸心受壓滿足要求 . OK44 單元 j 截面 Fx 最小時(shí) (My) 的偏心受壓驗(yàn)算e0 = Md/Nd = 43359333.77/826885.72 = 52.44 mme = e0+h/2-as