Luận văn thạc sĩ Kỹ thuật xây dựng: Ứng xử động lực học của tấm nổi gia cường gân dưới tác dụng của tải tập trung di động

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ĈҤI HӐC QUӔC GIA TP.HCM

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ABSTRACT

In recent decades, the scarcity of natural resources is a major global concern In particular, the lack of land due to the explosion of world population, along with the excessive increase of industrial parks and the process of urbanization has put enormous pressure on countries The challenge, which requires researchers to find a solution and the Very Large Floating Structures (VLFS) has been proposed

In this master thesis, the Finite element method (FEM) is extended to cooperate with the boundary element method (BEM), namely, the BEM-FEM This method is applied to compute hydroelastic responses of a pontoon type very large floating structure (VLFS) under wave action and also subjected to a moving load The floating structure and the surrounding fluid are discretized by 9-node isoparametric finite elements (FE) and By 9-node constant boundary elements (BE), respectively Structural analysis is based on 0LQGOLQ¶V plate theory Then the Nemark integration method is employed to solve the equation of motion for structural system The numerical example part of the thesis is simulated by Matlab software The results are verified with the results of previous studies and commercial structural software Then, the plate is surveyed when changing important factors such as the arrangement of stiffness reinforcement, velocity of concentrated moving load, depth

of the seabed The results show displacement and drag force The displacement of the plate to decrease when the plate is reinforced The comparisons show very good agreement

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NHIӊM VӨ LUҰ19Ă17+Ҥ&6Ƭ i

LӠI CҦ0Ѫ1 ii

7Ï07ҲT LUҰ19Ă17+ҤC 6Ƭ iii

ABSTRACT iv

LӠI &$0Ĉ2$1 v

MӨC LӨC vii

DANH MӨ&&È&+Î1+9Ӏ x

DANH MӨ&&È&%ҦNG BIӆU xvi

MӜT SӔ é+,ӊU VIӂT TҲT xvii

&+ѬѪ1* TӘNG QUAN 1

1.1 Giӟi thiӋu 1

1.1.1 Ĉһt vҩQÿӅ 1

1.1.2 Tәng quan hӋ kӃt cҩu nәLVLrXOӟn (VLFS) 1

1.1.3 ѬXÿLӇm 2

1.1.4 Ӭng dөng 2

1.2 7uQKKuQKQJKLrQFӭXYjWtQKFҩp thiӃt cӫDÿӅ WjL 5

1.3 MөFWLrXYjKѭӟQJQJKLrQFӭu 12

1.4 CҩXWU~FGӵ kiӃn trong luұQYăQ 13

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2.2 /êWKX\Ӄt tҩm Reissner-Mindlin chӏu uӕn 15

2.2.1 Giӟi thiӋu tәng quan 15

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2.3.2.1 KiLQLӋm phҫn tӱ ÿҷng tham sӕ 24

2.3.2.2.HӋ tӑDÿӝ ÿӏDSKѭѫQJSKҫn tӱ ÿҷng tham sӕ Q9 24

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2.3.4 ThiӃt lұp ma trұn kӃt cҩu tҩm nәi Mindlin sӱ dөQJSKѭѫQJSKiSSKҫn tӱ hӳu hҥn (FEM) 31

2.4 /êWKX\Ӄt dҫm Bernoulli-Euler 37

2.5 3KѭѫQJSKiSSKҫn tӱ hӳu hҥQiSGөng cho dҫm Bernoulli-Euler 40

2.5.1 ThiӃt lұp ma trұQÿӝ cӭng phҫn tӱ khung phҷng 40

2.5.2 ThiӃt lұp ma trұQÿӝ cӭng phҫn tӱ dҫPWURQJNK{QJJLDQ 44

2.5.3 ThiӃt lұp ma trұn khӕLOѭӧng phҫn tӱ NKXQJNK{QJJLDQ 48

2.6 ThiӃt lұp ma trұn kӃt cҩu tҩm nәi JLDFѭӡQJJkQVӱ dөQJSKѭѫQJSKiSSKҫn tӱ hӳu hҥn (FEM) 50

2.7 /êWKX\ӃWVyQJWX\ӃQWtQK 51

2.8 3KѭѫQJSKiSSKҫn tӱ ELrQ 56

2.8.1 /êWKX\Ӄt chҩt lӓQJOêWѭӣng 56

2.8.2 ĈLӅu kiӋQELrQ 57

2.8.2.1.ĈLӅu kiӋQÿӝng lӵc hӑc ӣ ÿi\ cӫa miӅn chҩt lӓng 57

2.8.2.2.ĈLӅu kiӋQÿӝng hӑc tҥi mһt tiӃS[~FFӫa kӃt cҩXYjFKҩt lӓng 57

2.8.2.3.ĈLӅu kiӋQELrQӣ Y{Fӵc 57

2.8.3 3KѭѫQJWUuQKWKӫ\ÿӝng lӵc cӫa chҩt lӓQJWUrQPLӅn thӡi gian 57

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2.8.5 3KѭѫQJSKiSSKҫn tӱ ELrQWX\ӃQWtQK 61

2.8.6 3KѭѫQJSKiSSKҫn tӱ ELrQFKREjLWRiQ+\GURHODVWLF 62

2.9 3KѭѫQJWUuQKGDRÿӝng cӫa hӋ tҩm-Qѭӟc 64

2.10.3KѭѫQJSKiSJLҧi hӋ SKѭѫQJWUuQKFKX\ӇQÿӝng 65

2.10.1 3KѭѫQJSKiS+RXEROW 65

2.10.2 3KѭѫQJSKiS1HZPDUN 65

&+ѬѪ1* KӂT QUҦ 3+Æ17Ë&+6Ӕ 69

3.1 KiӇm chӭQJFKѭѫQJWUuQKMatlab 70

3.1.1 %jLWRiQ.LӇm chӭQJFKѭѫQJWUuQK0atlab vӟi SAP2000 70

3.1.2 %jLWRiQ.LӇm chӭQJFKѭѫQJWUuQKSKkQWtFKӭng xӱ ÿӝng so vӟi kӃt quҧ QJKLrQFӭu cӫD(QGRYj<DJR>@ 73

3.2 Mӝt sӕ EjLWRiQNKҧRViW 78

3.2.1 %jLWRiQ.KҧRViWӭng xӱ cӫa tҩPJLDFѭӡQJJkQWKHRSKѭѫQJy 80

3.2.2 %jLWRiQ.KҧRViWӭng xӱ cӫa tҩPJLDFѭӡQJJkQWKHRSKѭѫQJx 81

3.2.3 %jLWRiQ.KҧRViWӭng xӱ cӫa tҩPNKLJLDFѭӡQJJkQWKHRSKѭѫQJ x YjSKѭѫQJy 82

3.2.4 %jLWRiQ.KҧRViWӭng xӱ cӫa tҩPJLDFѭӡQJJkQWKHRSKѭѫQJx YjSKѭѫQJy NKLWKD\ÿәi vұn tӕc 86

3.2.5 %jLWRiQ.KҧRViWӭng xӱ cӫa tҩm sau thӡi gian xe dӯng lҥi 106

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3.2.10 %jL WRiQ  KҧR ViW ӭng xӱ cӫa tҩP NKL WKD\ ÿәi chiӅX Gj\ Wҩm 124

3.2.11 %jLWRiQ.KҧRViWӭng xӱ tҩPNKLWKD\ÿәLNtFKWKѭӟFYQJFKҩt lӓng 127

3.2.12 %jL WRiQ  KhҧR ViW ӭng xӱ cӫa tҩP NKL WKD\ ÿәL ÿӝ lӟn cӫa tҧi trӑng tұSWUXQJGLÿӝng 130

&+ѬѪ1* KӂT LUҰN 9¬+ѬӞ1*3+È775,ӆN 133

7¬,/,ӊU THAM KHҦO 135

PHӨ LӨC 141

/é/ӎ&+75Ë&+1*$1* 143

'$1+0Ө&&È&+Î1+9Ӏ

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+unh 1.2 6kQED\Qәi, Mega-Float tҥi vӏnh Tokyo, Nhұt Bҧn 3

+uQK 6kQED\TXӕc tӃ Kansai - Nhұt Bҧn 3

+uQK 6kQED\TXӕc tӃ Tokyo (Haneda) 4

+uQK ĈѭӡQJEăQJQәi cӫDVkQED\TXӕc tӃ KitaKyushu 4

+uQK Khu dӵ trӳ dҫu Kamigoto 4

+uQK Trҥm cӭu hӝ tҥi vӏQK7RN\RYj2VDND 5

+uQK 7tQKXӕn cӫa kӃt cҩu phao (pontoon) 5

+uQK 7tQKXӕn cӫa kӃt cҩu VLFS (Mega-Float) 5

+uQK 6ѫÿӗ ӭng xӱ WRjQSKҫn cӫa kӃt cҩu nәi 6

+uQK KӃt cҩu tҩm nәLYjKӋ tӑDÿӝ 14

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+uQK Phҫn tӱ tӭ JLiFQ~WWURQJKӋ tӑDÿӝ ÿӏDSKѭѫQJ 25

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+uQK Mһt cҳt ngang dҫm 38

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+uQK MiӅn khҧRViWYjPһWELrQWUzQQӱDÿѭӡQJWUzQ 59

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+uQK ChuyӇn vӏ cӫD6$3Yj/uұQYăQ 71

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+uQK 0{KuQKWKtQJKLӋm tҩm VF-10 cӫD(QGRYj<DJR>29] 74

+uQK ChuyӇn vӏ cӫa tҩm tҥi thӡLÿLӇm t=1.85(s) 74

+uQK ChuyӇn vӏ cӫa tҩm tҥi thӡLÿLӇm t=3.55(s) 74

+uQK ChuyӇn vӏ cӫa tҩm tҥi thӡLÿLӇm t=5.5(s) 75

+uQK ChuyӇn vӏ cӫa tҩm tҥi thӡLÿLӇm t=7.3(s) 75

+uQK ChuyӇn vӏ cӫa tҩm tҥi thӡLÿLӇm t=9.4(s) 76

+uQK ChuyӇn vӏ cӫa tҩm tҥLFiFYӏ WUtZ1, Z5, Z9 cӫa tҩm VF-10 giӳa Luұn YăQYjWKtQJKLӋm 76

+uQK 0{KuQKWҩm MF-300 79

+uQK ChuyӇn vӏ cӫa tҩPJLDFѭӡQJSKѭѫQJy tҥi tӡLÿLӇm t=17.45s 80

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ cӵFÿҥi so vӟLNKLNK{QJEӕ WUtJkQ 80

+uQK ChuyӇn vӏ cӫa tҩPJLDFѭӡQJJkQSKѭѫQJx tҥi tӡLÿLӇm t=17.45s 81

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ cӵFÿҥi so vӟLNKLNK{QJEӕ WUtJkQ 81

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ cӵFÿҥi giӳDWUѭӡng hӧSJLDFѭӡQJJkQWKHR SKѭѫQJx YjSKѭѫQJy 82

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ giӳDWUѭӡng hӧSNK{QJJLDFѭӡQJYjJLD FѭӡQJJkQYӟLEѭӟFJkQWKHRSKѭѫQJx PEѭӟFJkQWKHRSKѭѫQJ y WKD\ÿәi tӯ 5m, 10m, 15m, 20m, 30m 83

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ cӵFÿҥi giӳDWUѭӡng hӧSNK{QJJLDFѭӡng YjJLDFѭӡQJJkQYӟLEѭӟFJkQWKHRSKѭѫQJx OjPEѭӟFJkQWKHR SKѭѫQJy WKD\ÿәi tӯ 5m, 10m, 15m, 20m, 30m 83

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ giӳDWUѭӡng hӧSNK{QJJLDFѭӡQJYjJLD FѭӡQJJkQYӟLEѭӟFJkQWKHRSKѭѫQJx WKD\ÿәi 5m, 10m, 15m, 20m, PEѭӟFJkQWKHRSKѭѫQJy NK{QJÿәi 5m 84

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ max giӳDWUѭӡng hӧSNK{QJJLDFѭӡQJYj JLDFѭӡQJJkQYӟLEѭӟc JkQ WKHRSKѭѫQJx WKD\ÿәi 5m, 10m, 15m, PPEѭӟFJkQWKHRSKѭѫQJy NK{QJÿәi 5m 84

+uQK Ĉӗ thӏ FKrQKOӋch chuyӇn vӏ max giӳDWUѭӡng hӧSNK{QJJLDFѭӡQJYj

JLDFѭӡQJJkQYӟLEѭӟFJkQSKѭѫQJx WKD\ÿәi 5m, 10m, 15m, 20m,

PEѭӟFJkQSKѭѫQJy NK{QJÿәLPYjQJѭӧc lҥi 85

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x YjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 86

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 87

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 88

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 89

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 90 +uQK ChuyӇn vӏ cӵFÿҥi cӫDFiFWUѭӡng hӧSEѭӟFJkQx cӕ ÿӏQKYjy WKD\ÿәi

khi vұn tӕFWKD\ÿәi 91+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 92

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 93

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 94

+uQK Ĉӗ thӏ chuyӇn vӏ theo thӡi gian cӫa tҩPFyEѭӟFJkQJLDFѭӡQJSKѭѫQJ

x OjPYjSKѭѫQJy OjPNKLYұn tӕFWKD\ÿәi 95 +uQK ChuyӇn vӏ max cӫDFiFWUѭӡng hӧSEѭӟFJkQy cӕ ÿӏQKYjx WKD\ÿәi khi

vұn tӕFWKD\ÿәi 96+uQK BiӇXÿӗ sӵ WKD\ÿәLÿӝ VkXYQJO}PNKLYұn tӕc tҧi trӑQJWKD\ÿәi theo

QJKLrQFӭu cӫa Takizawa [53] 97+uQK BiӇXÿӗ sӵ WKD\ÿәi bӅ rӝQJYQJO}PNKLYұn tӕc tҧi trӑQJWKD\ÿәi theo

QJKLrQFӭu cӫa Takizawa [53] 97

+uQK Ĉӗ thӏ chuyӇn vӏ tҥi vӏ WUt giӳa tҩm JLDFѭӡQJEѭӟFJkQx OjPy Oj

P YjNK{QJJLDFѭӡng khi vұn tӕFWKD\ÿәi 98

+uQK Ĉӗ thӏ chuyӇn vӏ tҥi vӏ WUt giӳa tҩm JLDFѭӡQJEѭӟFJkQx OjPy Oj P YjNK{QJJLDFѭӡng khi vұn tӕFWKD\ÿәi 98

+uQK Ĉӗ thӏ chuyӇn vӏ tҥi vӏ WUt giӳa tҩm JLDFѭӡQJEѭӟFJkQx OjPy Oj P YjNK{QJJLDFѭӡng khi vұn tӕFWKD\ÿәi 99

+uQK Ĉӗ thӏ chuyӇn vӏ tҥi vӏ WUt giӳa tҩm JLDFѭӡQJEѭӟFJkQx OjPy Oj P YjNK{QJJLDFѭӡng khi vұn tӕFWKD\ÿәi 99

+uQK Ĉӗ thӏ chuyӇn vӏ tҥi vӏ WUt giӳa tҩm JLDFѭӡQJEѭӟFJkQx OjPy Oj P YjNK{QJJLDFѭӡng khi vұn tӕFWKD\ÿәi 100

+uQK Ĉӗ thӏ chuyӇn vӏ tҥi vӏ WUt giӳa tҩm JLDFѭӡQJEѭӟFJkQx OjPy Oj P