船體強(qiáng)度與結(jié)構(gòu)設(shè)計(jì)方案計(jì)算書

1、記制M檢核定1500m3耙吸式挖泥船1宇I(lǐng)日期2班3009205278總縱強(qiáng)度計(jì)算書2018.8.25基本設(shè)計(jì)文件編號(hào)力18頁(yè),第1頁(yè)天津大學(xué)建工學(xué)院船舶工程系目錄 TOC o 1-5 h z HYPERLINK l bookmark6 o Current Document .計(jì)算說(shuō)明3 HYPERLINK l bookmark10 o Current Document .剪力和彎矩計(jì)算4計(jì)算重量分布和浮力分布4計(jì)算靜水剪力和靜水彎矩5分別繪制站間載荷、剪力和彎矩圖7計(jì)算總縱彎矩值和剪力值8 HYPERLINK l bookmark20 o Current Document 3總縱彎曲應(yīng)力、受

2、壓構(gòu)件的穩(wěn)定性校核及折減計(jì)算113.1臨界應(yīng)力失穩(wěn)計(jì)算13 HYPERLINK l bookmark33 o Current Document 4結(jié)論141計(jì)算說(shuō)明本計(jì)算書是1500m3耙吸式挖泥船總強(qiáng)度計(jì)算書，涉及到挖泥船的靜水彎矩、剪力，波浪附加彎矩、附加剪力，計(jì)算總彎曲應(yīng)力等等，以校核是否滿足設(shè)計(jì)要求。這里我們只計(jì)算滿載到港的情況。具體計(jì)算內(nèi)容如下：計(jì)算內(nèi)容靜水彎矩、剪力波浪附加彎矩、附加剪力剪力、彎矩合成計(jì)算總彎曲應(yīng)力、受壓構(gòu)件的穩(wěn)定性校核及折減計(jì)算折減后的高次總彎曲應(yīng)力計(jì)算計(jì)算結(jié)果分析及結(jié)論計(jì)算工況：滿載出港計(jì)算狀態(tài)：中拱和中垂主要技術(shù)參數(shù)船長(zhǎng)：78M;滿載排水量：5020噸；平均吃

3、水：5.4M;站距：AL=3.9m波高：4M重心在腫前:Xg=0.813m。艄吃水：Tf=577ML尾吃水：Ta=5.23M主尺度：船長(zhǎng)：78M,船寬：14.5M,型深：6.3M,設(shè)計(jì)吃水5.1M,肋距：0.6M,強(qiáng)框架間距：1.8M。3海水密度：10.055KN/m船體材料：計(jì)算剖面的所有構(gòu)件均采用低碳鋼，屈服極限bY=235.2N/mm2許用應(yīng)力：.總縱彎曲許用應(yīng)力：b=0.5(TY.總縱彎曲與板架局部彎曲合成應(yīng)力的許用應(yīng)力：在板架跨中：(T1+b2=0.65(TY在橫艙壁處：(T1+(T2=(TY1.3靜水彎矩計(jì)算資料(1站間重量噸)表1-1)0112233445566778899105

4、7.60562.71681.581183.623177.206202.028274.463472.659454.598456.4481011111212131314141515161617171818191920418.771408.105405.117401.806435.472166.794147.99383.40174.61954.8592(2靜水平衡狀態(tài)各站橫剖面浸水面積m)表1-2)01234567891010234156667275777777771112131415161718192077777878797868512552剪力和彎矩計(jì)算2.1計(jì)算重量分布和浮力分布根據(jù)表1-1）

5、繪制站間重量分布曲線:站間重量9080706050403020100 I I I ” ” I1H IillllllllllllllIllllllllllllllIllllllllllllllJll I川川I川本站間重量01234567891011121314151617181920圖2-1站間重量分布梯形圖依據(jù)表1-2）計(jì)算靜水浮力:表2-1）靜水浮力計(jì)算靜水浮力計(jì)算站號(hào)浸水面積m成對(duì)和理論站間浮力KN站間0101012333647.0390-1241641254.8641-23j56971901.9032-34661222392.0843-45j721382705.8014-56751472

6、882.2665-67j771522980.3026-78771543019.5177-89771543019.5178-910771543019.5179-1011771543019.51710-1112771543019.51711-12113781553039.12412-1314781563058.73113-14115791573078.33814-1516781573078.33815-1665916-1718511192333.26317-181925761490.15118-1920530588.21819-20理論站間浮力3500理論站間浮力3000

7、2500200015001000500001234567891011121314151617181920圖2-2浮力分布曲線圖2.2計(jì)算靜水剪力和靜水彎矩根據(jù)表格1-1）和表格2-1）繪制靜水剪力和靜水彎矩的計(jì)算表格如下：表2-2）靜水計(jì)算站理論理論理論站理論站第第對(duì)第剪力*L對(duì)第彎矩理號(hào)站間站間間浮力間載荷5)列值/210)值論KIN)KIN)列自列積不封列的站噸）KN3)-上至分閉的不封號(hào)4)下和修正閉值值的修正12)3)4)5)6)7)8)9)10)11)12)0000-57.60565.1647.039-115052581.934281.9381.937.28974.64159.712

8、8.131.61424285437253921-62.71615.21254.86-226444639.620721.5885.414.57706.91726.256.31470.04542397755705272-81.58800.31901.90-331103251101.591823.3430.21.861801.6688.384.46304.364151296287458293-183.61801.2392.08-442334145590.742872413.897667.1629.15942384.7314951512.6114438.44-177.21738.2705.80-550

9、639105967.4093381.1346236.443344.26251640.725610643.49385.663.85-202.01981.2882.26-6628895575900.3714281.2112543.734237.41194768.9404250767.39193.415.56-274.42692.2980.30-77634822287.8194569.2997651.024518.58454897.0575579749.5946.268.17-472.64636.3019.511617.26-8859785658292952.3749858.312893.73121

10、1025.7209622.2889.522.38-454.54459.3019.511440.08-9998606659881512.4196265.601446.818271153.8067313.6875237.69-456.44477.3019.511458.23-19.00-110487556583853.894352872.89362848801281.83599049.685.753.210418.74108.3019.511088.621034.-1114.-1-71144657017324254780.1892829681409.81558111.884.168.411408.

11、14003.3019.51983.9932018.-2106.-1-0551065557263949487.47204770131537.75476212.382.98312405.13974.3039.12935.0742953.-3048.-1-171983750283452194.76568673171665.65651313.881.498.513401.83941.3058.73882.9853836.-3938.-1-0671718678627731102.0843540751794.52281414.258.814.714435.44271.3078.331193.645030.

12、-5139.-1-7298082520742818864109.3775367841922.3486251548.729.515166.71636.3078.33-3588.-3704.-1-942498251442.0833910245116.6976199782050238.144.716147.91451.2862.65-2177.-2301.-1-93811851410.844914479.123.94198734.2178.6556.71771737277859191783.40818.12333.26-662.3-793.6-3197-1-16427515

13、15.099241639.131.20972306.890.281889449177561874.61732.01490.15-42.76-342.81-9121758.13895.741072.138.50952092.2434.527919616284070491954.85538.1588.217-0-2-967550.0507145.71314.145.72563.2563.0.0030201973997050589由表2-2）可知:x0813滿載重量：W=49246.2KN重心坐標(biāo)xgM艄吃7卜Tf=5.77M尾吃水：Ta=5.23M最大剪力值Nmax=5139.775KN最大彎矩值

14、：Mk=-83599.2KN.m準(zhǔn)確度：剪力：彎矩：滿足精度要求。2.2.1分別繪制站間載荷、剪力和彎矩圖如下站間載荷分布2000150010005000-500-1000-1500-2000-Onum1-01 0-9 9-841-31站間載荷分布圖2-3站間載荷分布圖靜水載荷剪力靜水載荷剪力圖2-4靜水載荷剪力圖靜水彎矩圖靜水彎矩圖2.3計(jì)算總縱彎矩值和剪力值:根據(jù)表格波浪載荷1-2)2-3)和2-2)進(jìn)行總縱彎矩值和剪力值的計(jì)算:表2-3)合成剪力及彎矩計(jì)算理波靜橫對(duì)對(duì)靜波不封修正波浪不封修正靜水靜水論面水剖45)浪剪閉調(diào)后的彎矩閉修后的剪力彎矩站下下面)列的力整剪力正值號(hào)橫橫積歹U積分合

15、成剪力合成彎矩剖剖浸的面面水積浸浸面分水水積面面增積積值m)-(2123456)7)8)9)10111213141516)02310-0-.21313.13.2258.504.504.2281669169114223-.41945.72.2898.10.3887.27601247151374.631.6962.1544.48012036708.5.14.36443192353.9825941-.41883.201.163920.61618770824945214706.1470232566842.46262.56072.95.77.28.49975.27.93.76237256-.116118

16、403.231730.9228615423741116818016304408817987.1.2145.77108.865.6.424.1.28.29.148.4747766-.011145667.285041.2280925504988205123841443519434951.0.3905.7144.484.1.565.5.738.4.223.9157772-.05.161973.316651.531143723623531003344256164595661909.4993.3718.867.4.71.7.850.8.712.5670754.-.1861611297317061.831

17、0949597482421142374042734782534.72.14.88216.065.842.2.935.57.77627714-.0.91411600278272.12710612087295247451857557229110064.92.78.66252.544.4.984.5.467.1328567720-.3.61061849208582.42002706999776071289372094896132873.35.05.23288.86.8.129.7.96.3.71169517725-.4.560.2018117992.7108677061122658314468067

18、253214652814.54.18324.452.44.38.2.523.6.971210507726-19.0-.1.87.72083150.103.47.97965124767180362835928.9150746.389760363986.21.44.89.2362841151772545.-883.-996.-1114-2111-.1.80520463066113.6462782213716450.928155.567146019.03348.28.59.78.4681258771889.-1756-1880-2106-3986-.3.661911.81123.4537308149

19、65811.2047547.657133546.3864305.74.369013677810118-2329-2463-3048-5512-.4.5.831702.93133.876651116214889.5686565.444114537.959470.82.881.5491477780.129-2543-2687-3938-6626-.633.731454.649144.899556017463814.8435228.74290427.39257.307.41.79.1158479-124-2437-2592-5139-7732-.75.341200.965154.5194589187

20、02718.7753486.2956204272.325543.27.16.12.58.6169178-104-2053-2218-3704-5923-.813.75971.859164.717371319951717.9761792.69335107.8238584.14.29.97.77.67178568-73.-1436-1611-2301-3912-.61725793.231175.392303221209127.4196556.81115683.6231618.51.4.08.193.33187051-36.-706.-891.-793.-1685-.61902683.2531185

21、.71792615224437026097890.3284592.6964650.68.5.126.36193825-3.0-59.6-255.-42.7342.298.-.3134644.0604195.374424652369961.609585271354618.8.397687.25.75356838205.5-0-170.10.652.206.206.0.00249424940.000.000.000.00175137072072022.82.842838902817根據(jù)上表分布繪制合成剪力圖和合成彎矩圖如下:由表格2-3)可以得到最大彎矩值和最大剪力值：最大剪力值：Nma)=773

22、2.295KN最大彎矩值：Mmai150784KN.m3總縱彎曲應(yīng)力、受壓構(gòu)件的穩(wěn)定性校核及折減計(jì)算圖3-166.5號(hào)肋位剖面圖各個(gè)構(gòu)件的名稱、尺寸、面積及其形心到到參考軸的距離如表3-1所示。參考軸選在船底基線。表3-1參與總彎曲構(gòu)件構(gòu)件編R構(gòu)件名稱構(gòu)件尺寸mm)構(gòu)件剖面積2cm)距參考軸距離m)靜力矩構(gòu)件自身慣性矩(cm*m矩中和軸距離(m總縱彎曲應(yīng)力2(N/mm1平板龍骨一18K1290232.22.0000.0063-3.2684.592箱型內(nèi)龍骨|125001420044.00.3314.524.790.92-2.9376.033箱型底縱骨L100M60M1015.00.060.93

23、0.060.013-3.283.044箱型上縱梁10 x30012M13022.82.659.28154.120.017-0.6617.125箱型上下弧板-600父201023.03069.183.06-0.266.756箱型縱骨L100M60M10150.69.35.580.013-2.6669.02151.218.622.320.013-2.0653.45302.2066145,20.025-1.0627.517箱型豎板46M15002400.7518013545-2.5165.138箱型斜板46M19002582.2567.61248.7277.615-1.0627.509船底板46M1

24、6002560000.006-3.2684.5910觥板14父20002800.6168100.893.34-2.6669.0211側(cè)板6x38006083.051854.45655.92731.63-0.215.4512頂歹U板16M15002405.6513567661.4452.39-62.0113船底縱骨L180X110X12X31010000.297-3.2684.59314觥縱骨L180X110X1233.70.413.485.390.09-2.8674.2115舷側(cè)縱骨L100M100M12M367.71.6108.32173.310.057-1.6643.0816舷側(cè)縱骨L14

25、0X90X10L140M90父10父322.23.066.6199.8P0.0151-0.266.7566.64.4293.041289.30.0451.14-29.5817甲板邊板44x15002106.313238334.90.0033.04-78.8818甲板板11X140011x43501546.5109270980.0033.24-84.07478.56.52827.518378.0.0043.24-84.0819甲板縱行吱咨父214M2002486.0148889280.532.74-71.120甲板縱骨L160 x100 x10 x8202.46.01214.47286.40.4

26、42.74-71.121泥倉(cāng)縱骨L140M90M10X4L140X90X10X388.82.0177.6355.20.06-1.2632.7066.65.033316650.041.74-45.1522泥倉(cāng)豎壁_14M40005604.3240810354.746.671.04-26.9823泥倉(cāng)斜壁16x21003361.5504756123.48-1.7645.6724泥倉(cāng)豎壁心X550880.2723.766.41522.22-2.9977.59求和：5053.516473.3382753.473求和可知：剖面面積A=5053.5cm2靜力矩：B=16473.33cm2*m慣性矩：C=8

27、0882.86+1870.612=82753.473cm2*m2?=B/A=3.26mI=2C-?2*A)=2CB2/A)=58107.876cm2*m23.1臨界應(yīng)力失穩(wěn)計(jì)算滿載中垂?fàn)顟B(tài)。船體梁中和軸以下處于受拉狀態(tài)，中和軸以上處于受壓狀態(tài)。故只需要計(jì)算中和軸以上部分受壓板及縱骨的臨界應(yīng)力。受壓縱骨架式甲板的臨界應(yīng)力計(jì)算公式：構(gòu)件名稱甲板板、-cr編R18100t 2=76()2b受月板長(zhǎng)邊a三板的臨界應(yīng)力 板短邊 b(cm 65.9(3-1表 1.12.786甲板邊板17180受壓縱骨剖面要素及臨界應(yīng)力計(jì)算表格如下：65.91.44.513板的臨界應(yīng)力 er cr(N/mm211.736235.2計(jì)算公式:二2Ei二E=2 TOC o 1-5 h z HYPERLINK l bookmark26 o Current Document a(f+bet)(N/mm23.14221090.441802m(25.32+300X10)而0.5八=0.5*235.2=117.6(N/mn20.5所以縱骨的臨界應(yīng)力按下式計(jì)算：2(N/mm