查看完整版本 : Driven Pile 一問

mtrckcrc 2019-1-9 10:34 AM

Driven Pile 一問

Does BD accept using pipe pile as driven pile?

mtrckcrc 2019-1-9 10:35 AM

Had it been adopted in Hong Kong construction project before?

banmak 2019-1-9 01:08 PM

Do you really  know what is pipe pile? What is driven pile?

mtrckcrc 2019-1-9 01:09 PM

Yes

banmak 2019-1-9 06:43 PM

basic classification
replacement pile
displacement pile
you can check from old documents for Franki pile, pressure pile, vibro pile being approved in HK

mtrckcrc 2019-1-9 06:51 PM

Thanks for your reply. I understand 305 UBP is common material for driven pile. What I mean is drievn steel pipe pile (for example, 273 dia. CHS). Will BD accept driven steel pipe pile as permanent piles?

[[i] 本帖最後由 mtrckcrc 於 2019-1-9 06:56 PM 編輯 [/i]]

banmak 2019-1-9 10:20 PM

How can you driven a 12m long 273chs?

mtrckcrc 2019-1-9 10:21 PM

[quote]原帖由 [i]banmak[/i] 於 2019-1-9 10:20 PM 發表 [url=https://www.discuss.com.hk/redirect.php?goto=findpost&pid=493175100&ptid=27961296][img]https://www.discuss.com.hk/images/common/back.gif[/img][/url]
How can you driven a 12m long 273chs? [/quote]
Why can't?

mtrckcrc 2019-1-9 10:25 PM

[url=https://youtu.be/HRXXPYpP1Y8]https://youtu.be/HRXXPYpP1Y8[/url]

banmak 2019-1-9 10:29 PM

You have to check
at what thickness available?
slender ratio?
impact load?
local effect at top and bottom?
by displacement ?
Shape and design of shoe ?
bulk effect?
You know nothing about steel design.

mtrckcrc 2019-1-9 10:33 PM

Does any C-hing have any experience of driven pipe pile works?

mtrckcrc 2019-1-9 10:34 PM

[quote]原帖由 [i]banmak[/i] 於 2019-1-9 10:29 PM 發表 [url=https://www.discuss.com.hk/redirect.php?goto=findpost&pid=493175577&ptid=27961296][img]https://www.discuss.com.hk/images/common/back.gif[/img][/url]
You have to check
at what thickness available?
slender ratio?
impact load?
local effect at top and bottom?
by displacement ?
Shape and design of shoe ?
bulk effect?
You know nothing about steel desig ... [/quote]
Refer to your questions, I do not see the reason why steel pipe pile cannot be adopted as driven pile.

[[i] 本帖最後由 mtrckcrc 於 2019-1-9 10:36 PM 編輯 [/i]]

banmak 2019-1-9 11:02 PM

then go ahead a detail design

mtrckcrc 2019-1-9 11:09 PM

In commercial point of view, does driven pipe pile have move advantages than traditional driven H-piles?

banmak 2019-1-9 11:28 PM

Why and how? From design point of view, your are talking about replacement  pile, displacement pile, end bearing pile or friction pile? Bearing capacity, limitation, machine availability?

mtrckcrc 2019-1-9 11:34 PM

[quote]原帖由 [i]banmak[/i] 於 2019-1-9 11:28 PM 發表 [url=https://www.discuss.com.hk/redirect.php?goto=findpost&pid=493179106&ptid=27961296][img]https://www.discuss.com.hk/images/common/back.gif[/img][/url]
Why and how? From design point of view, your are talking about replacement  pile, displacement pile, end bearing pile or friction pile? Bearing capacity, limitation, machine availability? [/quote]
My question stated in the first message is clear. It seems that you dun understand my question.

[[i] 本帖最後由 mtrckcrc 於 2019-1-9 11:36 PM 編輯 [/i]]

banmak 2019-1-9 11:43 PM

then you will understand after you work out a feasible design

banmak 2019-1-9 11:48 PM

BS doesn't care as the submission is your design proposal and you can build in accordance with.BD said they are watch dog only.

mtrckcrc 2019-1-9 11:50 PM

I believe driven steel pipe pile had been adopted in Hong Kong construction project before although it is not common in the market.
Just want to learn more about its application, advantages and constraints compare with the traditional driven H-pile.

[[i] 本帖最後由 mtrckcrc 於 2019-1-10 12:04 AM 編輯 [/i]]

finishchan 2019-1-19 11:54 PM

1.  It is not a pre-approval type foundation,  need BD Technical Section approval and it is a time consuming process.  Unless a contractor insist to propose such pile,  no consulant will try it.
2. From technical point of view, it is  hard to drive pipe pile into soil comparing with H pile,  heavier or bigger driving machine is required which is another constrain to HK as most sites are small.
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