Ðề: tinh dong dat cong trinh cau

1) Tieu Chuan cua Viet Nam hoac Eurocode8,ASCE7, KTA2201 , DIN4149
2) quy trinh: Spectral analyse, SRSS or CQC, Duoc cong nhan o tat ca cac nuoc tren the gioi.
3) Phuong phap tinh:
a- biet duoc Reponse Spectral theo tieu chuan, hoac duoc biet tuy quoc gia va vung dat xay cau.
b-Tao Mo hinh cau, => dung cac phan mem quen thuoc (ANSYS...)cho chan dong theo Spectral (aceleration-frequenz) vao cac goi chan cau(Support) => Tac dung Seismic
c- Phoi hop Seismic o tren voi Trong Luong (dead load) va khoang 80% Live load bang phuong SRSS, CQC cho ra ket qua. => Kiem soat noi luc, áp suat, deflection theo tieu chuan.

Notice:
Methode Spectral analyse with SRSS or CQC khong nen su dung o cac Cau co day cap (tension only).
=> dung Time History cho Cau cang day cap (nonlinear Spring !!)

Toi gui kem vai Files.pdf, hy vong len duoc.

Ðề: tinh dong dat cong trinh cau

cám ơn,


rất tổng quát,


để mình tham khảo.


có gì yêu cầu thêm.


many thanks

Ðề: tinh dong dat cong trinh cau

Chuc thanh cong.

Ðề: tinh dong dat cong trinh cau

thank alot,


cho minh hoi ban Umy them mot chut,


lay gia toc nen thi lay theo tieu chuan nao ?


dung DL + 0.8LL de xac dinh chu ky dao dong rieng cua cau phai o ?


neu khong thi xac dinh chu ky dao dong rieng cua cau thi lam the nao ?,

sau khi xac dinh duoc chu ky dao dong rieng thi so sanh voi chu ky cho phep o dau de quyet dinh tinh.


va co phuong phap don gian de tinh luc tuong duong khong ?,


hay phai tinh theo phuong phap pho phan ung ?,


best regards,

Ðề: tinh dong dat cong trinh cau

thank alot,


cho minh hoi ban Umy them mot chut,


lay gia toc nen thi lay theo tieu chuan nao ?


dung DL + 0.8LL de xac dinh chu ky dao dong rieng cua cau phai o ?


neu khong thi xac dinh chu ky dao dong rieng cua cau thi lam the nao ?,

khi xac dinh duoc chu ky dao dong rieng thi dua vao tieu chuan nao de biet duoc chu ky do nam trong phan vi cho phep hay khong ?,

co phuong phap luc tuong duong nao de tinh cho cong trinh cau khi co chu ky dao dong nho,

hay la phai tinh theo phuong phap pho phan ung nhu ban noi ?,


best regards,

Ðề: tinh dong dat cong trinh cau

Anh phamminhduc cho toi duoc biet:

1) tinh dong dat cong trinh cau,mot xay dung thuc te cu the tai dau ?
(Trong xu Viet Nam hay tai quoc gia nao tren the gioi ?)
2) hay chi la bai tap ly thuyet, vi anh con la sinh vien hoac ky su tre.
(de tuy theo trinh do hieu biet, de toi giai thich tra loi cho)

Cho biet nhanh nhe.

Ðề: tinh dong dat cong trinh cau

cam on rat nhieu,


hien minh ky su tre dang tham gia thiet ke tai viet nam,


best regards,

Ðề: tinh dong dat cong trinh cau

a) lay gia toc theo diagram cua Spectral/Period or Frequenz lay theo tieu chuan cua noi xay cau (de thi du tai Duc File: DIN4149 tieng Anh lam mau, tuy thuoc vung dong dat nao, Tai Viet nam dung tieu chuan ben nha ). Hoac do nguoi chu thau dua ra theo hiep dinh giao ket.


b) Masse: dung DL + 0.8LL (80% He so theo kinh nghiem cua toi, 60% theo Eurocode8) de xac dinh chu ky dao dong rieng cua cau.
(Giai thich qua File CIS-Berkeley Reponse Seismic loading)

c) khi xac dinh duoc chu ky dao dong rieng thi xem theo diagram cua Spectral theo tieu chuan nao de biet duoc gia toc.

d) co phuong phap quasi static: dung gia toc ngang tuong duong de tinh cho cong trinh cau khi co dao dong nho. (Methode nay phai giao ket truoc trong hiep dinh, co nhieu nuoc khong chap nhan !)

e)neu khong kha nang xac dinh chu ky dao dong rieng cua cau thi dung gia toc toi da de tinh. => quasi static.

f) Rat quan trong la tinh toan va biet ket cau khang chan dong dat dung, giam duoc tai hoa chet nguoi va it thiet hai material khi say ra su co.

g) dau Thang 8 toi ve den Viet Nam, TP HCM, Se co gan to chuc mot buoi noi chuyen tai Bach Khoa co noi ve tinh dong dat. neu Ban quan tam co gang ghi danh tham du. Co duoc co hoi hieu biet them.

Ðề: tinh dong dat cong trinh cau

cam on " ban " rat nhieu,


khi nao anh ve toi viet nam co to chuc buoi noi chuyen ve dong dat, nhat dinh minh se dang ky tham du.


minh rat quan tam ve van de nay, va mong hoc hoi duoc tu "ban",


de minh nghien cuu va se tiep tuc hoi ban.


thank you again,