Optimization of deep excavations.
|To be announced|
|DeepFND 2017: Deep Foundation software (NEW!)|
|DeepEX 2016: Deep Excavation software|
|Soldier pile walls|
|Sheet pile walls|
|Secant pile Walls|
|Soldier and Tremied Concrete|
|Soil Mix walls|
|Combined king pile sheet piles|
|Cost estimation for braced excavations|
|SnailPlus: Soil nailing - soil nailing walls|
|SiteMaster: Inclinometer software (adopted by Geokon)
|HelixPile: Helical Pile Software|
|RC-Solver: Concrete Design ACI-318, EC2, EC8|
|Steel-Beam: Steel beam column design, full equations, AISC, EC3|
Soldier pile and lagging walls are some of the oldest forms of retaining systems used in deep excavations. Soldier pile walls have successfully being used since the late 18th century in metropolitan cities like New York, Berlin, and London. The method is also commonly known as the "Berlin Wall" when steel piles and timber lagging is used. Alternatively, caissons, circular pipes, or concrete piles can also be used as soldier piles but at an increased cost. Timber lagging is typically used although reinforced concrete panels can be also utilized for permanent conditions. Soldier pile walls are formed by:
1. Constructing soldier piles at regular intervals (6 ft to 12 ft, typical)
2. Excavating in small stages and installing lagging.
3. Backfilling and compacting the void space behind the lagging.
Moment resistance in soldier pile and lagging walls is provided solely by the soldier piles. Passive soil resistance is obtained by embedding the soldier piles beneath the excavation grade. The lagging bridges and retains soil across piles and transfers the lateral load to the soldier pile system.
Soldier pile and lagging walls are the most inexpensive systems compared to other retaining walls. They are also very easy and fast to construct. The major advantages of soldier pile walls are:
1. Soldier piles are fast to construct.
2. Soldier pile construction is cheaper when compared to other systems.
3. Soldier pile installation is versatile and adjustments can be made in the field easily to accomodate changes.
4. Lagging construction can be very quick.
5. Construction of soldier pile and lagging walls does not require very advanced construction techniques.
The major disadvantages of soldier pile and lagging systems are:
1. They are primarily limited to temporary construction.
2. Cannot be used in high water table conditions without extensive dewatering.
3. Poor backfilling and associated ground losses can result in significant surface settlements.
4. They are not as stiff as other retaining systems.
5. Because only the flange of a soldier pile is embedded beneath subgrade, it is very difficult to control basal soil movements.
or click here to arrange a free online video presentation
of deepEx on soldier pile & lagging walls with our technical experts
Secant Pile Wall
Secant pile walls are formed by constructing intersecting reinforced concrete piles. The piles are reinforced with either steel rebar or with steel beams and are constructed by either drilling under mud or augering. Primary piles are installed first with secondary piles constructed in between primary piles once the latter gain sufficient strength. Pile overlap is typically in the order of 3 inches (8 cm). In a tangent pile wall, there is no pile overlap as the piles are constructed flush to each other. The main advantages of secant or tangent pile walls are:
1. Increased construction alignment flexibility.
2. Increased wall stiffness compared to sheet piles.
3. Can be installed in difficult ground (cobbles/boulders).
4. Less noisy construction.
The main disadvantages of secant pile walls are:
1. Verticality tolerances may be hard to achieve for deep piles.
2. Total waterproofing is very difficult to obtain in joints.
3. Increased cost compared to sheet pile walls.
Signup to our Email List for the latest information about our products, support and more.
DeepEX is the ultimate software for deep excavation design with umatched capabilities. Includes secant piles, soldier piles, sheet piling, diaphragm walls, and custom wall types. Includes slope stability and soil nailing. Trusted by more than 1000 engineers worldwide.
SiteMaster is our new modern inclinometer software. SiteMaster supports files from many inclinometer manufacturers such as DigiTilt, Encardio, GeoKon, ITMsoil, SINCO, SISGEO, etc. Unmatched capabilties at an affordable price. Contact us to find out!
Sign up for free software trials and to receive other valuable training materials. Join a list of more than 1000 professional engineers worldwide who choose our products and services. Receive special offers and professional service!
Let us help you with our yearly technical support contracts. We help you get realistic bids in place, including preliminary design services. Professional help and support from our expert engineers with personal training. All this for an unmatched flat annual fee.
Steel-Connect software. Easily design and evaluate many steel connections with US codes ASD, LRFD, LRFD 13th. Simple and moment strut to beam connections. Reports can be exported in Word and PDF. Automatically determine the required steel stiffeners, welds, and bolts.
Wickdrains is a simple software program that estimate consolidation times and settlements with & without vertical drains (wick-drains). With this software you can optimize your consolidation times and accelarate construction times when compressible layers are present.
Copyright © 2003 - 2016 Deep Excavation LLC. All Rights Reserved.
Web Development by QV-WEB