第1章 绪 论

１．１ 题

１）承受总纵弯曲构件：

连续上甲板，船底板，甲板及船底纵骨，连续纵桁，龙骨等远离中

和轴的纵向连续构件（舷侧列板等）

２）承受横弯曲构件：甲板强横梁，船底肋板，肋骨

３）承受局部弯曲构件：甲板板，平台甲板，船底板，纵骨等

４）承受局部弯曲和总纵弯曲构件：甲板，船底板，纵骨，递纵桁，龙

骨等

１．２ 题

甲板板：纵横力（总纵弯曲应力沿纵向，横向货物或上浪水压力，横向

作用）

舷侧外板：横向水压力等骨架限制力沿中面

内底板：主要承受横向力货物重量，骨架限制力沿中面为纵向力 舱壁板：主要为横向力如水，货压力也有中面力

第2章 单跨梁的弯曲理论

２.1题

设坐标原点在左跨时与在跨中时的挠曲线分别为v(x)与v(x1)

M0x2Nx3１）图2.1 v(x)???2EI6EI原点在跨中：v1(x1)?v0?201l4p(x?l)34?6EI31l2p(x?l)32?6EI3l4p(x?3l)34 6EIMxNx??2EI6EI23l4?v1(l)?0v1'(l)?0p(x?l)3224，? ?p'6EI?v1(0)?0N1(0)??2２）图2.2v(x)??0x?NxMx??2EI6EIl3p(x?l)33 6EIp(x?l)32 6EI1??113?(?2?)? ?4??4162３）图2.33xqxdxNx3v(xx)??0xx????06EI6EIl2２.２题

pl3?1131?pl3(3???)?? a) v1?vpp?vp??6EI?16444?6EI3pl =

512EI

3pl V2?3?1?91?13?pl3pl ?????()??6EI?192EI96EI?4?162?4? 1

?MlMl2Pl29??(1?2) b) v(0)?33EI6EI6EI'20.1Pl25Pl2??73Pl =?

1620EI6EI3?27EI?MlMl2Pl29??(1?1) ?(l)?33EI6EI6EI20.1Pl24Pl2?107Pl?? =?

1620EI6EI3?27EI?l??2l?p????l233?1? vl??????3?1???m2?1?m1?1?

333?3EIl6EI?3??22??????237pl =

2430EI

7ql444ql5ql3 c) vl ???2192EI768EI2304EI??'qlpl v(0)???24EI16EI32?ql2166EI?l?ql?111?ql3 ?????96EI8EI?3612?3d)2.1图、2.2图和2.3图的弯矩图与剪力图如图2.1、图2.2和图2.3

图2.1

2

图2.2

图2.3

2.3题

1）

Mlql32l2?右???6EI24EI45EI?M?13q1l2120?l?Mlq?q?0??21???23EI??

q1l3Ml7l2?? 2）?0??3EI24EI180EI?l?Mllq1?? ?26EI??q1l3?1q1l31713??? = ??????EI?18243606?120?80EI2.4 题

图2.5

v(x)?v0??0x?N0x36EI，

v0?A?p?N0?

?x3??v(x)?Ap??0x???A?N0

?6EI?

3