Rule Change Notice No. 1 November 2007

Transcription

1 UL CHNG NOTIC NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS Common Structura u for Buk Carrir, January 006 u Chang Notic No. Novmbr 007 Not: Thi ru chang i to b immntd by ICS Mmbr on hi contractd for contruction from a dat not atr than ri 008. Coyright in th Common Structura u for Buk Carrir i ownd by: mrican Burau of Shiing Burau Vrita China Caification Socity Dt Nork Vrita Grmanichr Loyd Koran gitr of Shiing Loyd' gitr Nion Kaiji Kyokai gitro Itaiano Nava uian Maritim gitr of Shiing Coyright 006 Th ICS mmbr, thir affiiat and ubidiari and thir rctiv officr, moy or agnt ar, individuay and coctivy, rfrrd to in thi cau a th ICS Mmbr. Th ICS Mmbr, individuay and coctivy, aum no ronibiity and ha not b iab to any ron for any o, damag or xn caud by rianc on th information or advic in thi documnt or howovr rovidd, un that ron ha ignd a contract with th rvant ICS Mmbr ntity for th roviion of thi information or advic and in that ca any ronibiity or iabiity i xcuivy on th trm and condition t out in that contract. PG OF 4

2 UL CHNG NOTIC NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS For tchnica background for u Chang in thi rnt documnt, rfrnc i mad to arat documnt Tchnica Background for u Chang Notic No.. CHPT 5 HULL GID STNGTH PPNDIX HULL GID ULTIMT STNGTH. Critria for th cacuation of th curv M-χ. Load-nd hortning curv -..4 Bam coumn bucking Th quation dcribing th oad-nd hortning curv C - for th bam coumn bucking of ordinary tiffnr comoing th hu girdr tranvr ction i to b obtaind from th foowing formua Fig 3: C C + 0b t + 0t whr: : dg function dfind in [..3] C : Nt ctiona ara of th tiffnr, in cm, without attachd ating : Critica tr, in N/mm, qua to: C for H H C H 4 H H C H for 4 > : ativ train dfind in [..3] I b : ur coumn bucking tr, in N/mm, qua to: 4 0 π I : Nt momnt of inrtia of ordinary tiffnr, in cm 4, with attachd h ating of width b : ffctiv width, in m, of th attachd h ating, qua to: b for >. 0 b for t H : Nt ctiona ara, in cm, of ordinary tiffnr with attachd h ating of width b PG OF 4

3 UL CHNG NOTIC NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS b : ffctiv width, in m, of th attachd h ating, qua to: b.5.5 for >. 5 b for Toriona bucking Th quation dcribing th oad-nd hortning curv C - for th fxura-toriona bucking of ordinary tiffnr comoing th hu girdr tranvr ction i to b obtaind according to th foowing formua Fig 4. C whr: C + 0t + 0t CP : dg function dfind in [..3] C : Nt ctiona ara of th tiffnr, in cm, without attachd ating : Critica tr, in N/mm, qua to: C for H H 4 C H H H C H for > 4 : ur toriona bucking tr, in N/mm, dfind in Ch 6, Sc 3, [4.3] : ativ train dfind in [..3] CP : Bucking tr of th attachd ating, in N/mm, qua to:.5.5 CP H for >. 5 CP H for. 5 : Cofficint dfind in [..4]..7 Wb oca bucking of ordinary tiffnr mad of fat bar Th quation dcribing th oad-nd hortning curv C4 - for th wb oca bucking of fat bar ordinary tiffnr comoing th hu girdr tranvr ction i to b obtaind from th foowing formua Fig 5: C4 0t P CP + C 4 + 0t whr: : dg function dfind in [..3] P : Nt ctiona ara of th tiffnr, in cm, without attachd ating CP : Bucking tr of th attachd ating, in N/mm, dfind in [..5] PG 3 OF 4

4 UL CHNG NOTIC NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS C4 4 : Critica tr, in N/mm, qua to: C 4 for H 4 4 H 4 C4 H 4 : Loca ur bucking tr, in N/mm, qua to: H H C 4 H for 4 > 4 4 t h : ativ train dfind in [..3]. w w..8 Pat bucking Th quation dcribing th oad-nd hortning curv C5 - for th bucking of tranvry tiffnd an comoing th hu girdr tranvr ction i to b obtaind from th foowing formua: min H C 5 H H min.5.5 H C5 whr: : dg function dfind in [..3]. : Cofficint dfind in [..4]. PG 4 OF 4

5 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS Common Structura u for Buk Carrir, January 006 Tchnica Background for u Chang Notic No., Novmbr 007 Coyright in th Common Structura u for Buk Carrir i ownd by: mrican Burau of Shiing Burau Vrita China Caification Socity Dt Nork Vrita Grmanichr Loyd Koran gitr of Shiing Loyd' gitr Nion Kaiji Kyokai gitro Itaiano Nava uian Maritim gitr of Shiing Coyright 006 Th ICS mmbr, thir affiiat and ubidiari and thir rctiv officr, moy or agnt ar, individuay and coctivy, rfrrd to in thi cau a th ICS Mmbr. Th ICS Mmbr, individuay and coctivy, aum no ronibiity and ha not b iab to any ron for any o, damag or xn caud by rianc on th information or advic in thi documnt or howovr rovidd, un that ron ha ignd a contract with th rvant ICS Mmbr ntity for th roviion of thi information or advic and in that ca any ronibiity or iabiity i xcuivy on th trm and condition t out in that contract. PG OF 8

6 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS Tchnica Background for th Chang in: Chatr 5/ndix. aon for th u Chang: Th origina formua in ndix of Chatr 5 which ar th dtrmination of th oad-nd hortning curv ar om ca u, howvr, om formua i not conitnt with th aumtion of th mthod adotd in CS. Thi ru chang rooa i mad to fix th inconitncy.. xanation of th modifid formua. Main aumtion of th mthod Th hu girdr i tratd a a bam ubjctd xcuivy to bnding, xcuding har. It corrond to th aumtion of th cro ction rmaining an during oading. Th mthod adotd u th o-cad "comonnt aroach" and i bad on th foowing imifying aumtion: ach cro ction i mad of an amby of indndnt mnt or comonnt at and tiffnd at, tranvr cro-ction of th hi hu rmain an aftr dformation and rndicuar, to th nutra urfac, which nab to cacuat for any curvatur Ф th train according to th foowing formua : Ф z z ditanc from th mnt undr conidration to th nutra axi, coa occur for an ocatd btwn two adjacnt tranvr rimary mmbr, ato-atic bhaviour of ach an i dtrmind undr tnion and comrion; infunc of har tr i ngctd. Th mthod tak ao advantag of th oibiity to dtrmin for ach an it oad-nd hortning curv C -, a indicatd hraftr.. Dtrmination of th oad-nd hortning curv C - bam coumn bucking Th ur coumn bucking tr i takn a: ' I 4 0 π ' whr I : momnt of inrtia, in cm 4, of th tiffnr with attachd ating of width b takn '.5 b a: b b : cro ctiona ara, in cm², of th tiffnr with an attachd ating of width b takn a:.5.5 b b for.5 b c t b b for <.5 t : thickn of attachd ating : an of tiffnr Sinc th ffctiv width b of attachd ating may b cacuatd for any train v by conidring th gnraizd ndrn of ating : PG OF 8

7 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS.5.5 b b for.5 b b for <.5 th ur coumn bucking tr can b xrd a: π whr a ' ' I I momnt of inrtia of th tiffnr with attachd ating of width b takn '.5 b b b If w aum that th Johnon-Otnfd corrction i aicab to any dg tr th maximum tr that th tiffnr with attachd at of width b can utain i: max for > max for 0. 5 whr. Th φ i dfind a φ, thn th abov formua can b xrd a foow. max for φ > φ φ for 0. 5 max whr φ For any rativ train, th avrag tr av in th tiffnr with attachd at of width b i givn by + bt + b t max av av av + b t + w b t φ for φ 0. 5 w b t + 4 φ for φ > 0. 5 CS for Buk Carrir, av C and y H, o th formua ar a foow: + w b t C H b t + for φ > φ φ ' PG 3 OF 8

8 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS + b t C H for > b t C C for > 0. 5 whr C H 4 and H + b t C C for whr C H H 4 for > > H H H Thrfor, th formua for C for > i modifid to H H C H from 4 C H 4 H Th formua for Cfor i obtaind a foow in th am mannr. + w b t C φ for φ b t C H for b t H C H for H + b t H C for + b t H C C for H whr C for H Thrfor, th modification of formua for Cfor i not ncary. Th rood modification of th formua for th oad-nd hortning curv of toriona bucking and wb oca bucking of ordinary tiffnr mad of fat bar can b obtaind by th am mannr mntiond abov..3 Dtrmination of th oad-nd hortning curv C - at bucking Th utimat trngth for at an mnt i aroximatd by th foowing formua. PG 4 OF 8

9 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS PG 5 OF 8 cr a b a b whr t b 0 for tranvry tiffnd an, th abov quation can b gnraid to any dg tr according to: w w max whr w a b a b 0 y In CS for Buk Carrir, max C5 and y H,, a and b, o th formua i a foow: H C In addition, utimat trngth of tranvry tiffnd an i controd by th yiding tr of th matria. Thrfor, 5 C i modifid to { { min H H C from { { min H H C 3. Imact on Scanting 3. Th ffct du to th modification of formua t firt, th invtigation wa carrid out how thi modification of th formua affct th oad-nd hortning curv. Th oad-hortning curv wa cacuatd for th foowing tiffnd an and at. Th matria of a at and tiffnr i HT3. Ty of tiffnr or at ng T-Bar Fat Bar Pat Siz of tiffnr 50x90x0.0/ x.0/00x x7.0 - Siz of at 400x800x x800x x800x x8000x5.0

10 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS Th Fig. how th rut of oad-hortning curv. In Fig., th oid in i th modifid on and th brokn in i th currnt on, and vrtica in man th rativ tr and horizonta in man th rativ train. a ng b T-Bar c Fat Bar d Pat Fig. Th rut of oad-hortning curv hown in Fig. a, b and c, th oad-hortning curv for th ongitudina tiffnd an i not affctd by thi modification. Howvr, a hown in Fig. d, th oad-hortning curv for th bucking of at tranvry tiffnd an i affctd by thi modification, ciay critica tr i dcrad. In ordr to invtigat a arg dcra in critica tr for th at du to th modification of th formua, additiona cacuation of th oad-hortning curv of th at with diffrnt act ratio and thickn a givn in th tab bow i carrid out. ct ratio 3 ct ratio 5 ct ratio * 800*5.0, HT * 800*5.0, HT * 800*5.0, HT3 400 * 800*0.0, HT * 800*0.0, HT * 800*0.0, HT3 Th comarion on oad-hortning curv of at with 3 diffrnt act ratio ubjctd to tranvr thrut ar hown in Fig.. PG 6 OF 8

11 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS a ct ratio *800 b ct ratio *800 c ct ratio 3 400*800 Fig. Th comarion rut on oad-hortning curv of at with 3 diffrnt act ratio PG 7 OF 8

12 TCHNICL BCKGOUND FO CN NO. NOV 007 COMMON STUCTUL ULS FO BULK CIS From Fig., it i found that th oad-hortning curv for bucking of at dcra du to th modification of th formua. From th rut, it i obviou that thi modification do not giv th imact for Doub id kin BC with ongitudina framing ytm. 3. Scanting imact du to thi modification ccording to th rut cifid in 3., it wa found that thi modification affct th canting of hi with tranvry framing ytm. Thn th canting imact cacuation wa carrid out for th foowing thr kind of ing id kin BC, i.., Handy Max, Panamax and Ca iz. In addition, th canting imact cacuation wa carrid out for on doub id kin BC for rfrnc. Th utimat bnding momnt caaciti obtaind by th modifid formua wr comard with tho of th currnt on a givn in th tab bow. Th canting imact du to thi modification wa cacuatd bad on th foowing aumtion. Th utimat bnding momnt caacity of ach hi cacuatd according to th currnt formua i qua to th rquird vau. In ordr to atify with th rquird utimat bnding momnt caacity, ony th thickn of ur dck ating i incrad. Bcau a th dck ating i ocatd aart from th nutra axi of tranvr ction, incraing th thickn of dck ating i vry ffctiv to imrov th utimat hu girdr bnding caacity. 3 Th canting cacuation i cacuatd bad on th incra of th tranvr ction ara within 0.4 L amidhi. Th canting incra du to thi modification wa ao givn in th tab. atio Modification/ currnt Diffrnc of utimat bnding momnt caaciti Scanting incra SSS Handy max 96. % -3.9% 0.8 % SSS Panamax 97.6% -.4% 0.68% SSS Ca iz 98.4% -.6% 0.58% DSS Ca iz 00.0% 0.0% 0.0% ***** nd ***** PG 8 OF 8