có Anh Chị Em nào từng tính toán thiết kế cảng dùng cọc ống thép thì có thể chia sẻ ít kinh nghiêm cho mình được không.rất mong được sự đóng góp ý kiến.
Cọc ống thép dùng cho cầu cảng tuy không thông dụng như cọc btct nhưng đã có những công trình sử dụng ở trong nước, như hệ thống cọc cầu cảng ở Dung Quất, Nghi Sơn. Cách tính toán không khác nhiều so với lại cách tính như công btct về mặt nguyên lý và cơ sở lý thuyết. Không hiểu bạn muốn tìm hiểu về kinh nghiệm gì để tiện chia sẻ cho đỡ lan man, mất thời gian người đọc
Anh Barce có thể nói rõ hơn về lý thuyết tính toán của cọc không ạ.nếu em dùng lý thuyết tính toán cọc khoan nhồi áp dụng thì có được không,vì theo em biết các tiêu chuẩn về cọc chủ yếu của nhật bản.
Lý thuyết tính cọc rất nhiều tài liệu và tiêu chuẩn đề cập bạn nhẻ, không chỉ riêng Nhật lùn đâu. "chào anh. anh đã làm về cọc ống thép rồi ạ. em đang làm thiết kế cơ sở 1 cảng cho tàu max 100.000 T. Em định dùng pán cọc ống thép anh a. anh có thể cho em biết cách thức làm việc của cọc được không a. vì em biết cọc rỗng, vậy sau khi đưa cọc vào nền đất thì họ có bơm bê tông vào trong không anh.? rất mong anh chia sẻ!" 1/Cách thức làm việc của cọc bạn đọc cơ sở lý thuyết và phương pháp luận trong cuốn sách nhập môn dưới đây 2/Cọc thép tuy rỗng ở trong, nhưng về cường độ và khả năng chị lực hơn hẳn cọc btct dư ứng lực, do đó ko cần đổ bê tông vào trong nhé. 3/Kiên thức thì vô biên, quay đầu là bờ. Một trong những cuốn sách nối tiếng về cọc là đây: http://www4.hcmut.edu.vn/~cnan/Pile Design and Construction Practice - M.J.Tomlinson.pdf
Về sự làm việc tương tác giữa đất nền và cọc có thể phân tích làm 2 thành phần: 1/lực ma sát của thành cọc với nền đất+ 2/phản lực của lớp đất mũi cọc lên cọc.vậy anh Barce có thể nói rõ hơn về thành phần lực 1/ không anh. em đọc một đồ án áp dụng cách tính thành phần 1/ như cọc khoan nhồi thì có vẻ không ổn tại vì<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG/> </o:OfficeDocumentSettings> </xml><![endif]-->[FONT=&][/FONT]<!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <wunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <woNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> 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mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} </style> <![endif]-->của thép và bê tông theo em là khác nhau.vậy thành phần τ[SUB]i[/SUB](T/m[SUP]2[/SUP]) thì giải quyết thế nào ạ.?
Đối với cọc thép bịt đầu thì mới có 02 thành phần lực như bạn nói. Còn cọc hở đầu thì có thêm thành phần ma sát biên thành trong. Đọc thêm: 1/http://offshore.vn/threads/320?hi-cong-dong-coc-CTB-dang-coc-vay-Skirt-pile-/page4&highlight=pile 2/http://offshore.vn/threads/461?hiet-ke-mong-coc-CTB&highlight=pile