船體強(qiáng)度-課程設(shè)計(jì)分析

1、船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì).2.2.3船舶在靜水和波濤上剪力彎矩計(jì)算3總縱強(qiáng)度計(jì)算19331/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)一、課程設(shè)計(jì)任務(wù)書綜合應(yīng)用船舶與海洋結(jié)構(gòu)物強(qiáng)度的相關(guān)知識，完成船舶船體中剖面的結(jié)構(gòu)設(shè)計(jì)，并按相關(guān)規(guī)范要求進(jìn)行總縱強(qiáng)度的校核。二、課程設(shè)計(jì)主要內(nèi)容（一）、依據(jù)相關(guān)規(guī)范要求完成船舶舯剖面結(jié)構(gòu)設(shè)計(jì)（二）、船體總縱強(qiáng)度的校核1、船舶在靜水中均衡地址的確定2、船舶在波濤中均衡地址的確定3、船舶重量分布曲線的確定4、船舶浮力分布曲線的確定5、船舶載荷分布曲線的確定6、船舶剪力和彎矩分布曲線的確定7、剖面特征計(jì)算8、許用應(yīng)力的確定9、總縱曲折應(yīng)力校核10、極限強(qiáng)度校核三、船舶數(shù)

2、據(jù)資料船舶主尺度：總長：LOA128.40m設(shè)計(jì)水線長：LWL120.04m垂線間長：LPP115.50m計(jì)算船長：L115.50m型寬：B19.50m2/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)型深：D10.20m設(shè)計(jì)吃水：d8.30m方型系數(shù)：CB0.653四、課程設(shè)計(jì)主要步驟（一）船舶在靜水和波濤上剪力彎矩計(jì)算主要數(shù)據(jù)：計(jì)算船長L115.50m船寬B19.50m海水比重1.025t/m3設(shè)計(jì)吃水d8.30m采納滿載出港的裝載狀況作為計(jì)算基礎(chǔ)，由設(shè)計(jì)任務(wù)書所給的參照數(shù)值可獲取以下參數(shù)：排水量12657.91t均勻吃水dm8.18m重心縱向地址xg3.946m浮心縱向坐標(biāo)xb0.23m漂心縱向坐標(biāo)

3、xf4m水線面積2Aw1803.902m縱穩(wěn)心半徑BML121.76m此中的水線面積Aw是由所給的厘米吃水噸數(shù)TPC18.49t求出，公式為：Aw100TPC。縱穩(wěn)心半徑BML是由所給的厘米縱傾力矩MTC133.44t/m求出的，公式為：BML100MTCLPP。3/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)波型和波濤參數(shù)選擇：波長：L115.5m波高：h4m坦谷波垂向坐標(biāo)值采納余弦級數(shù)睜開式計(jì)算：2r24yBrcosx(1cosx)各理論站從坦谷波波面到波軸線垂向坐標(biāo)值經(jīng)計(jì)算列入下表：中垂站109876543210號1011121314151617181920坦谷波垂向坐2.5002.4102.14

4、01.6921.0800.340-0.465-1.247-1.905-2.345-2.500標(biāo)中拱站012345678910號2019181716151413121110注：表中yB值由波軸線向下為正，向上為負(fù)。滿載出港狀態(tài)的彎矩和剪力計(jì)算船舶縱傾調(diào)整1）船舶在靜水中均衡地址的確定第一次近似：首吃水：df1xgxb1xf)6.295mdmR(2尾吃水：da1xgxb1xf)9.820mdmR(2排水體積：V12349.18m3第二次近似：首吃水：df2VV1xgxb11df1AR(xf)6.506m2尾吃水：da2VV1xgxb1(1da1ARxf)10.078m2VV20.154%0.1%-

5、0.5%滿足設(shè)計(jì)要求Vxgxb1L0.039%s1115.76256.669784557.0079-517.658s25.619784469.3201-436.165s37.019784586.2371-544.8222245.995421/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)6.319784527.7786-490.4932245.99557.719784644.6956-599.151577.33367.019784586.2371-544.8222088.0376.319784527.7786-490.4932088.038138.9156.669784557.0079-517.658s9

6、5.619784469.3201-436.165s100.56255.469784456.7933-424.5232378.932114.894784408.7738-379.8962383.877122375.531304.86254.169784348.2275-323.627s13569.0766674.169784348.2275-323.627s144.169784348.2275-323.6272339.862152399.0273.444784287.6813-267.3582339.862162302.6842.719784227.135-211.08945017262.026

7、6671.01978485.16434-79.1478250.239718491.31.01978485.16434-79.1478879.748819-0.68022-56.806352.79315355.555620103.68-1.88022-157.021145.9279346.996621172.8-1.88022-157.021145.9279963.879422-3.08022-257.235239.0627804.315523160.261214-4.14381-346.058321.61041314.37824-4.14381-346.058321.61042002564.6

8、866-3.19022-266.422247.60012351.244262353.9582353.85483.9808-4.46022-372.482346.16782353.449272356.2782356.170.19531251.851784154.6464-143.721s281.851784154.6464-143.721s29-3.08022-257.235239.06271816.47630-4.57272-381.877354.8992s3116.875-3.83022-319.869297.2725123233.75-3.83022-319.869297.27251233

9、33.75-3.83022-319.869297.2725123433.07949-3.83022-319.869297.272518.895535-4.58022-382.504355.48122585.56425計(jì)算中取比較軸距基線4.6m處。22/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)中和軸距比較軸距離161.330300810.019784028mm8154.572973中和軸距基線為4.58m。剖面對水平中和軸的慣性矩2I2161.3303008143337.78154.572973I286669.0275mcm2m2剖面上的應(yīng)力iMZi103mkgf/cm2（各構(gòu)件應(yīng)力見以下計(jì)算）Ii

10、2歐拉應(yīng)力計(jì)算板的歐拉應(yīng)力計(jì)算縱骨架式板格(四邊自由支持)按下式計(jì)算800(100t)2b計(jì)算見下表?？v骨架式編號板長邊板短邊板厚t,cm(100t/b)2板的歐拉應(yīng)力E，a,cmb,cmkgf/cm21中抗扭箱上邊板150251.536288003中抗扭箱下邊板150251.5362880010上甲板150752.813.9377777811150.2213縱艙壁板15072.51.54.2806183123424.49514舷頂列板15072.52.814.9155766911932.4624舭列板1501201.51.5625125025舭龍骨1501000.50.2520030內(nèi)底板a

11、150731.12.2705948581816.476b15066.51.12.7361637182188.931c15066.751.12.715706492172.56531船底板a150731.54.2221805223377.744b15066.51.55.0879077394070.326c15066.751.55.0498674414039.894橫骨架式板格(四邊自由支持)按下式計(jì)算100t)2(1s22E200(b2)s23/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)計(jì)算見下表。橫骨架式編號板短邊板長邊板厚t,cm(100t/s)2s/b(1+(s/b)2)2板的歐拉應(yīng)力E，s,cmb

12、,cmkgf/cm217A平臺(tái)751500.91.440.51.562545018縱艙壁板753400.81.1377780.2205882351.099686250.23967119舷側(cè)板上列板753401.540.2205882351.099686879.74884320B平臺(tái)751500.81.1377780.51.5625355.55555621縱艙壁板752400.91.440.31251.204849346.99658222舷側(cè)板以下板752401.540.31251.204849963.87939523C平臺(tái)751491.22.560.5033557051.570929804.3

13、1552縱骨的穩(wěn)固性計(jì)算在強(qiáng)度計(jì)算中，縱向骨材的理論歐拉應(yīng)力，按兩端自由支持的單跨梁，其歐拉應(yīng)力按下式計(jì)算E2Ei2(fbet)ai-包含帶板的骨材剖面慣性矩a-骨材跨距f-骨材自己的剖面積eb-帶板有效寬度t-帶板厚度E-資料的彈性模量計(jì)算縱骨穩(wěn)固性的帶板，當(dāng)其遇到的壓應(yīng)力大于臨界應(yīng)力時(shí)候應(yīng)作折減。此時(shí)帶板寬度按下式計(jì)算beb(1)2be-帶板有效寬度b-骨材間距cr-折減系數(shù)，大于1不折減E當(dāng)E超出資料的比率極限時(shí)，骨材的臨界應(yīng)力按下式計(jì)算當(dāng)當(dāng)EE1s,crE,21s,crs(1s)24E24/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)縱骨跨距和帶縱骨間板折減板折帶板有效寬構(gòu)件剖面積至參照軸距靜力

14、矩縱骨的計(jì)算板尺寸系數(shù)減系距(cm)度(cm)2離(cm)3(cmcm)(拱)數(shù)(垂)(cm)(cm)4號縱骨中抗扭箱縱骨1507012.88102.4對應(yīng)帶板中抗扭箱圍板701.5170105-0.75-78.755號縱骨中抗扭箱縱骨1507012.88102.4對應(yīng)帶板中抗扭箱圍板701.5170105-0.75-78.757號縱骨艙口圍板增強(qiáng)筋3007012.88102.4對應(yīng)帶板艙口圍壁板701.8170126-0.9-113.48號縱骨艙口圍板增強(qiáng)筋3007012.88102.4對應(yīng)帶板艙口圍壁板701.8170126-0.9-113.411號縱骨上甲板縱骨1507575151125

15、對應(yīng)帶板上甲板752.8175210-1.4-29412號縱骨縱艙壁縱骨15072.54010400對應(yīng)帶板縱艙壁板72.51.5172.5108.75-0.75-81.5625舷頂列版72.52.8172.5203-1.4-284.215號縱骨縱艙壁縱骨15072.512.88102.4對應(yīng)帶板縱艙壁板72.51.5172.5108.75-0.75-81.5625舷頂列版72.52.8172.5203-1.4-284.216號縱骨縱艙壁縱骨15072.512.88102.4對應(yīng)帶板縱艙壁板72.51.5172.5108.75-0.75-81.5625舷頂列版72.52.8172.5203-1

16、.4-284.226號縱骨a內(nèi)底縱骨a150732211242對應(yīng)帶板a內(nèi)底板a731.117380.3-0.55-44.16526號縱骨b內(nèi)底縱骨b15066.52211242對應(yīng)帶板b內(nèi)底板b66.51.1166.573.15-0.55-40.232526號縱骨c內(nèi)底縱骨c15066.752211242對應(yīng)帶板c內(nèi)底板c66.751.1166.7573.425-0.55-40.383827號縱骨a船底縱骨a150732412288對應(yīng)帶板a船底板a731.5173109.5-0.75-82.12527號縱骨b船底縱骨b15066.52412288對應(yīng)帶板b船底板b66.51.5166.59

17、9.75-0.75-74.812527號縱骨c船底縱骨c15066.752412288對應(yīng)帶板c船底板c66.751.5166.75100.125-0.75-75.0938慣性矩對中和軸慣縱骨2E縱骨歐拉縱骨臨界應(yīng)自己慣性矩i/A厚度應(yīng)力骨的計(jì)算(cm4)a2縱性矩(cm)2力(kgf/cm2)(kgf/cm)819.2273.06666671166.2685989.9004125460.892554953.679350.3292245.9947214號縱骨中抗扭箱縱骨25/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)59.062519.6875對應(yīng)帶板中抗扭箱圍板819.2273.0666667116

18、6.2685980.892554953.679350.3292245.9947215號縱骨中抗扭箱縱骨59.062519.68759.900412546對應(yīng)帶板中抗扭箱圍板819.2273.06666671227.4749090.823138738.422088.032088.0301147號縱骨艙口圍板增強(qiáng)筋102.0634.028.84347917對應(yīng)帶板艙口圍壁板819.2273.06666671227.4749090.823138738.422088.032088.0301148號縱骨艙口圍板增強(qiáng)筋102.0634.028.84347917對應(yīng)帶板艙口圍壁板16875562520625

19、.778952.592554953.6768350.092378.93199611號縱骨上甲板縱骨411.6137.272.3711542對應(yīng)帶板上甲板400010666.6666714066.53208292554953.6789310.732383.87651812號縱骨縱艙壁縱骨61.1718820.39062594.5649215658850.512375.531225對應(yīng)帶板縱艙壁板397.88132.626666715141.9896362.31271453819.22184.5333333081.7236290.892554953.6723944.862339.86183515號

20、縱骨縱艙壁縱骨61.1718820.39062525.3535469314797152399.026839對應(yīng)帶板縱艙壁板397.88132.62666673381.08318815.66767001819.22184.5333333081.7236290.892554953.6723944.862339.86183516號縱骨縱艙壁縱骨61.1718820.39062525.3535469314797.152302.683947對應(yīng)帶板縱艙壁板397.88132.62666673381.08318815.667670012662887.33333333199.133637192554953.

21、6729534.552351.24354226號縱骨a內(nèi)底縱骨a24.290758.09691666731.27207856對應(yīng)帶板a內(nèi)底板a2662887.33333333150.985101192554953.67312762353.95830126號縱骨b內(nèi)底縱骨b22.127887.37595833333.11597584對應(yīng)帶板b內(nèi)底板b2662887.33333333152.96839192554953.6731205.492353.85427726號縱骨c內(nèi)底縱骨c22.211067.403687533.04132449對應(yīng)帶板c內(nèi)底板c345611524372.63799219

22、2554953.6730933.982353.44925427號縱骨a船底縱骨a61.5937520.5312532.75384263對應(yīng)帶板a船底板a345611524315.54858192554953.6732935.512356.27819327號縱骨b船底縱骨b56.1093818.70312534.87311983對應(yīng)帶板b船底板b345611524317.904857192554953.6732853.942356.16963427號縱骨c船底縱骨c56.3203118.773437534.78674608對應(yīng)帶板c船底板c3總縱曲折應(yīng)力第二次近似計(jì)算由表可知，船體板架在中拱狀態(tài)

23、時(shí)中桁材和第一、第二、第三旁桁材發(fā)生減縮。船底板架曲折應(yīng)力計(jì)算（由中拱狀態(tài)確立）貨物重量（t）3450t水頭高度h(m)10.680第八站吃水艙長（m）27艙寬16.5載荷（tf/m2）3.20289225626/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)構(gòu)件名稱帶板寬度構(gòu)成部分構(gòu)件編號構(gòu)件剖面積至參照軸距離靜力矩(cm3)慣性矩(cm4)自己慣性矩(cm4)(mm)(cm2)(cm)內(nèi)底板30321.215048180722700032.38767外底板3143800082.125中桁材2920腹板3290756750506250337500內(nèi)底縱骨2666139917412751862662外底縱

24、骨277212864103683456987.2649689362537內(nèi)底板30306.915046035690525030.94575外底板31418.500078.46875第一旁桁材2790腹板3318075135001012500337500內(nèi)底縱骨2666139917412751862662外底縱骨2772128641036834561043.4695739547031內(nèi)底板30293.1515043972.5659587529.55929外底板31399.7500074.95313第二旁桁材2665腹板3418075135001012500337500內(nèi)底縱骨2666139917

25、412751862662外底縱骨2772128641036834561010.967510.59237652內(nèi)底板30293.714943761.36520433.729.61475外底板31400.500075.09375第三旁桁材2670腹板35178.874.513320.6992384.7330794.9內(nèi)底縱骨263313845546284521331外底縱骨2736124325184172894262067.98480413中拱最大彎矩作用在8站周邊即NO3貨艙內(nèi)彎矩(tf.m)板架曲折應(yīng)力(kgf/cm2)剖面對中和慣性矩外底剖面模數(shù)(cm3)內(nèi)底剖面模數(shù)腹板剖面模數(shù)艙壁處跨度中

26、點(diǎn)艙壁處2跨度中點(diǎn)2-488.961167225.6743849382.2171181-176.4079015086968.2177297.3660422.7460422.74295.4437136.3587-488.961167-176.407901-479.23503221.1853984383.517015-177.0078534907964.5973605.7158904.3858904.38282.2904130.2879-479.23503-177.00785327/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)-474.485022218.993087380.7775507-175.7434

27、854729126.8270813.7956828.5656828.56269.643124.4506-474.485022-175.743485-511.34784236.0066953405.3933586-187.1046274390790.766638.7152830.7552830.75270.1489124.6841-511.34784-187.104627臨界應(yīng)力總縱曲折應(yīng)力艙壁處E+跨度中點(diǎn)E+減縮系數(shù)E(kgf/cm2)1(kgf/cm2)2(kgf/cm2)2(kgf/cm2)1816.475887-257.23539551327.5147192042.155.160700

28、0547.938839112400-381.87724892782.2171182223.5927.2856320355.82279311512-319.869492723.03883271335.59210.0720257271.0491530.07202612188.930974-257.6507151709.6959442410.1166.635712019.3542112400-382.49380912783.5170152222.9927.2772864535.81183811512-319.869492732.76497016334.99210.1024323071.0472780

29、.10243212188.930974-257.6507151714.4459522407.9246.6541478539.345691112400-382.49380912780.7775512224.2577.2701243385.81514411512-319.869492737.51497826336.25650.1172821391.051230.11728212172.565192-257.6507151661.2173532408.5726.4475557639.348206112400-382.49380912805.3933592212.8957.3344804335.785

30、44111518.8955452-319.86949277.547705494331.79090.0235962031.037270.0235961剖面因素的計(jì)算構(gòu)件名稱構(gòu)件構(gòu)件尺寸(mmmm)剖面積-1減縮剖面距比較軸靜矩慣性矩自己慣性矩編號積A(cm2)距離Z(m)AZ(cm2m)AZ2(cm2m2)i(cm2m2)第一次近似計(jì)算結(jié)果8154.573-161.3303008143337.705528/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)中桁材326(1500-3752)45-0.927974273-41.7588-3.85160.7715428-618.9716.875第一旁桁材3312(1

31、500-3752)90-0.897567693-80.7811-3.85311.0072055-1197.3833.75第二旁桁材3412(1500-3752)90-0.882717861-79.4446-3.85305.8617389-1177.5733.75第三旁桁材3512(1490-372.552)89.4-0.976403797-87.2905-3.85336.0684229-1293.8633.079497865.298952.3786093139167.4中和軸距比較軸距離1952.37860930.121086145mm7865.298中和軸距基線為4.721m。2I21139

32、167.4952.3786093剖面慣性矩7865.298I278104.1217mcm2m2第二次近似計(jì)算構(gòu)件矩中和軸距離總縱曲折應(yīng)力構(gòu)件編號構(gòu)件名稱中拱Z(m)中垂Z(m)中拱(kgf/cm2)中垂(kgf/cm2)E或cr(kgf/cm2)上纖維7.5864147.727284653.0695532-599.7331中抗扭箱上邊板7.5789147.719784652.4239225-599.15s2中抗扭箱圍板6.5289146.669784562.0356252-517.658s3中抗扭箱下邊板5.4789145.619784471.6473279-436.165s4中抗扭箱縱骨6.

33、8789147.019784592.1650576-544.8222245.9955中抗扭箱縱骨6.1789146.319784531.9061928-490.4932245.9956艙口圍壁面板7.5789147.719784652.4239225-599.151577.3337艙口圍板增強(qiáng)筋6.8789147.019784592.1650576-544.8222088.038艙口圍板增強(qiáng)筋6.1789146.319784531.9061928-490.4932088.039艙口圍壁板6.5289146.669784562.0356252-517.658s10上甲板5.4789145.619

34、784471.6473279-436.165s11上甲板縱骨5.3289145.469784458.734714-424.5232378.93212縱艙壁縱骨4.7539144.894784409.2363607-379.8962383.8772375.53113縱艙壁板4.0289144.169784346.8253936-323.627s14舷頂列板4.0289144.169784346.8253936-323.627s15縱艙壁縱骨4.0289144.169784346.8253936-323.6272339.8622399.02716縱艙壁縱骨3.3039143.444784284.4

35、144264-267.3582339.8622302.68417A平臺(tái)板2.5789142.719784222.0034592-211.08945018縱艙壁板0.8789141.01978475.66050169-79.1478250.239719舷側(cè)板上列板0.8789141.01978475.66050169-79.1478879.748820B平臺(tái)板-0.82109-0.68022-70.6824558252.79315355.555621縱艙壁板-2.02109-1.88022-173.983367145.9279346.996622舷側(cè)板以下板-2.02109-1.88022-17

36、3.983367145.9279963.879429/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)23C平臺(tái)板-3.22109-3.08022-277.2842782239.0627804.315524舭列板-4.28468-4.14381-368.8423812321.61041314.37825舭龍骨-4.28468-4.14381-368.8423812321.610420026內(nèi)底縱骨a-3.33109-3.19022-286.7535284247.60012351.244b2353.958c2353.85427船底縱骨a-4.60109-4.46022-396.0803261346.16782

37、353.449b2356.278c2356.1728中工字鋼面板1.7109141.851784147.2824668-143.721s29中工字鋼腹板1.7109141.851784147.2824668-143.721s30內(nèi)底板-3.22109-3.08022-277.2842782239.06271816.47631船底板-4.71359-4.57272-405.7647865354.8992s32中桁材-3.97109-3.83022-341.8473477297.27251233第一旁桁材-3.97109-3.83022-341.8473477297.27251234第二旁桁材-3

38、.97109-3.83022-341.8473477297.27251235第三旁桁材-3.97109-3.83022-341.8473477297.272518.8955下纖維-4.72109-4.58022-406.4104172355.4812三、船體中剖面極限彎矩計(jì)算1極限彎矩作用下構(gòu)件內(nèi)的應(yīng)力計(jì)算見下表。極限彎矩作用下的應(yīng)力計(jì)算構(gòu)件構(gòu)件名稱離中和軸距離(m)中拱應(yīng)力(kgf/cm2)中垂應(yīng)力(kgf/cm2)E或減縮系數(shù)編號cr(kgf/cm2)上纖維7.7272842400-24004中抗扭箱縱骨7.0197842180.259-2180.2591452245.99545中抗扭箱縱

39、骨6.3197841962.848-1962.8476982245.99556艙口圍壁面板7.7197842397.671-2397.6705921577.33360.6578617艙口圍板增強(qiáng)筋7.0197842180.259-2180.2591452088.0370.9576988艙口圍板增強(qiáng)筋6.3197841962.848-1962.8476982088.03811上甲板縱骨5.4697841698.848-1698.8480842378.9321112縱艙壁縱骨4.8947841520.26-1520.260112383.8771215縱艙壁縱骨4.1697841295.084-12

40、95.0839692339.8621516縱艙壁縱骨3.4447841069.908-1069.9078282339.8621617A平臺(tái)板2.719784844.7317-844.7316863450170.53271418縱艙壁板1.019784316.7325-316.7324585250.2397180.79006619舷側(cè)板上列板1.019784316.7325-316.7324585879.74881920B平臺(tái)板-0.68022-211.267211.2667694355.55562021縱艙壁板-1.88022-583.972583.9721066346.9966210.594

41、20130/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)22舷側(cè)板以下板-1.88022-583.972583.9721066963.87942223C平臺(tái)板-3.08022-956.677956.6774439804.3155230.84073824舭列板-4.14381-1287.021287.0152241314.3782425舭龍骨-4.14381-1287.021287.015224200250.15539826內(nèi)底縱骨a-3.19022-990.842990.84209992351.24426b2353.958c2353.85427船底縱骨a-4.46022-1385.291385.2885

42、822353.44927b2356.278c2356.1730內(nèi)底板-3.08022-956.677956.67744391816.4763032中桁材-3.83022-1189.621189.61828512320.4303933第一旁桁材-3.83022-1189.621189.61828512330.4303934第二旁桁材-3.83022-1189.621189.61828512340.4303935第三旁桁材-3.83022-1189.621189.61828518.8955350.436187下纖維-4.58022-1422.561422.559116注：臨界應(yīng)力大于資料佩服極限的

43、構(gòu)件未列入表內(nèi)。2剖面模數(shù)Ws計(jì)算因?yàn)闃?gòu)件極限彎矩下發(fā)生失穩(wěn)，各構(gòu)件距離中和軸的距離將發(fā)生變化，中和軸變化BB2A1AA2慣性矩變化I2(I12C)2A222。1）船底受壓時(shí)最小剖面模數(shù)Ws計(jì)算見下表。構(gòu)件名稱縱艙壁板平臺(tái)板舭龍骨中桁材第一旁桁材第二旁桁材第三旁桁材減縮剖面積A(cm2)8154.573-43.8263構(gòu)件編號構(gòu)件尺寸(mmmm)剖面積-1第一次近似計(jì)算結(jié)果219(2400-6002)108-0.405799392312(1490-372.52)89.4-0.159261541255(100-251)3.75-0.844601683326(1500-3752)45-0.5696

44、098413312(1500-3752)90-0.5696098413412(1500-3752)90-0.5696098413512(1490-372.552)89.4-0.563813406距比較軸距離自己慣性矩Z(m)靜矩AZ(cm2m)慣性矩AZ2(cm2m2)i(cm2m2)-161.3303008143337.7055-1.983.27003482-158.213103.6831/36船體強(qiáng)度與結(jié)構(gòu)結(jié)構(gòu)設(shè)計(jì)課程設(shè)計(jì)-14.238-3.144.13774345-136.827-3.16726-4.1635913.18715386-54.9059-25.6324-3.8598.68490504-379.93716.875-51.2649-3.85197.3698101-759.87433.75-51.2649-3.85197.3698101-759.87433.75-50.4049-3.85194.0589363-747.12733.079497914.774666.7480928140562.1中和軸距參照軸距離(m)0.084240949Z上7.6430Z下-4.66446剖面對水平中和軸的慣性矩(cm2*m2)281011.8304Ws=36767.0086cm2mWmin=37098.2905Ws/Wmin=0.9911波峰時(shí)s=24