Methods of resisting hydrostatic uplift in substructures by I. H. Wong
Current time: 07-21-2018, 01:06 AM
Users browsing this thread: 1 Guest(s)
Author: aslam
Last Post: lisine
Replies 3
Views 3247

Methods of resisting hydrostatic uplift in substructures by I. H. Wong
#1
Methods of resisting hydrostatic uplift in substructures




by I. H. Wong

Mitic Associates, 95 Cashew Road #03-03, Singapore 679666, Singapore
Received 5 March 2001;
revised 8 May 2001;
accepted 10 May 2001.
Available online 13 August 2001.

Abstract:
Many underground structures are constructed for use as car parks and shops in basements of buildings and as mass rapid transit stations, depressed roadways and civil defense shelters in cities located in coastal areas where the ground is level and the elevations are low, with an attendant high groundwater table. This paper discusses the various methods of resisting hydrostatic uplift. These include the use of tension piles and the installation of a water pressure relief system under the base slab of the basement. A case history in Singapore employing a pressure relief system below a three-level basement is presented.

Author Keywords: Deep excavation; Groundwater pressure; Uplift; Stiff; Soft soils
Article Outline

1. Introduction
2. Mechanism of flotation caused by hydraulic uplift
3. Conventional methods to resist uplift
3.1. Toeing in of base slab into surrounding ground
3.2. Increasing dead weight of structure
3.3. Ground anchors
3.4. Tension piles
4. Design of tension piles
5. Methods to reduce or eliminate uplift
6. Design of under-drain system
6.1. Operating costs
7. Effects of dewatering on adjacent ground and structures
8. Case history Raffles City
8.1. Site conditions
8.2. Performance of under-drain system
9. Beneficial effects of pressure relief system for waterproofing of basement
10. Conclusions
References

[Image: Download.png]
Updated link:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************

[-] The following 4 users say Thank You to aslam for this post:
  • techno, zero85, RyanRS, ykhackhack
Reply
#2
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************

[-] The following 13 users say Thank You to kuyasipil for this post:
  • techno, shaqee, dbsimon29, knrsa, oreslaw, oanm2000, HungNguyen29, ambrish, tang1942, zero85, zrilek, peymanlord, cepot
Reply
#3
[Image: mirror.png]

***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************


[Image: comments.png]

Uploaded: Jun/07/2011
File Size: 701.13 KB
Paginated,
Searchable text


If you like this publication, CivilEA's team strongly suggest you to buy it! Support the authors!
If any posted material in CivilEA is useful to you, please buy it. Support the authors/developers. By any means you may not use the posted material in CivilEA to make money! Use it only for evaluation!
[-] The following 16 users say Thank You to Grunf for this post:
  • Jackass, blaze, ebaturalp, malc, seriousboy, ssi3k, oanm2000, lasalleguy, sodapas, gatob, zrilek, stanco, Trishu999, peymanlord, avscorreia, ykhackhack
Reply
#4
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************

[-] The following 17 users say Thank You to lisine for this post:
  • avscorreia, dinu69in, PinkPant, ting tsai huang, oanm2000, RyanRS, techno, Rainbow, bridgeengineer, cace-01, zrilek, ruaumoko, gulilero, Dell_Brett, ykhackhack, milova, Hengki
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
DURABILITY OF POST-TENSIONED BRIDGE SUBSTRUCTURES ir_71 0 1,841 12-08-2010, 03:55 PM
Last Post: ir_71



Users browsing this thread: 1 Guest(s)