Steel sheet piling

VolkerGround Engineering can design and install a variety of sheet pile retaining walls depending upon the individual project requirements and ground conditions. A sheet pile wall can be used in either a permanent or temporary works application in either a land or marine environment.

This application has been used on a number of flood alleviation schemes around the country, providing both existing embankment stabilisation and flood prevention barriers.

In permanent works a high quality finish can be achieved to such an extent that the steel face can be merely painted rather than providing a concrete facing wall in front of the sheet piles. This has been widely used in the construction of underground car parks within basement structures, which has proved to be extremely cost effective.

Retaining wall design is one of the key services provided by VolkerGround Engineering, whether at the initial costing of project works or the final construction scheme. Our experienced designers are able to advise and provide clients with the most cost effective structural solution for either temporary or permanent schemes.

Once designed and priced, VolkerGround Engineering are able to select the most suitable plant from their own fleet, for the construction of the sheet pile retaining wall.

Steel piles can provide a cost effective solution to a wide range of foundation applications. Manufactured in continental Europe, steel piling is especially suitable for building structures in a sustainable and cost effective manner. Major manufacturers form steel sheet piling in electric arc furnaces, utilising a blend of scrap products from a variety of sources. The chemical content of steel piles is strictly controlled in order to produce material of acceptable section modulus, to satisfy all current construction and design codes, particularly with regard to the relevant Euro Codes, and CE certifications.

HZM/AZ steel piles can provide an economical combination wall using steel sheet piling and sections combined to form a permanent wall that is capable of supporting both vertical and lateral building loads. The high section modulus of the steel piles can ensure that minimal surface deflections are recorded. This makes the system useful for deeper excavations, where only concrete diaphragm walls had previously been considered.

Steel piling, in the form of interlinked tubular piles and sheets, has been widely used in this country in the formation of marine quay walls. VolkerGround Engineering has completed such a structure, in partnership with VolkerStevin, on the refurbishment of Berths 201 – 202, for the Port of Southampton. The berths were dredged and extended to take the new generation of pan panamex container vessels with increased berth depth requirements.

(This article comes from VolkerGround Engineering editor released)

Enhancement of steel sheet-piling quay walls using grouted anchors

Steel sheet-pilings are one of the most common types of quay walls used in the construction of ports and harbors facilities, especially for berths of small crafts which have small dimensions and capacity. Due to the growing market of marine traffic around the world, an increasing number of these berths are required to be upgraded to meet the requirements of permanently growing dimensions and capacity of vessels. Several methods can be used to increase the load-carrying capacity of steel sheet-piling walls. The use of additional anchored tie rods grouted into the backfill soil and arranged along the exposed wall height is one of the most appropriate solutions adopted for rehabilitation and upgrading of the existing quay wall. An extensive parametric study through the finite element program, PLAXIS, version 8.2 was carried out to investigate the enhancement of using grouted anchors technique on the load response of sheet-piling quay wall. The influence of sheet-pile wall geometry, grout-ties area, inclination and location, length of grout, dredging depth and backfill soil angle of internal friction to enhance this type of walls are analyzed and the results are presented.

(This article comes from editor released)

Steel Sheet Piling Products

Steel sheet piling is a manufactured construction product with a mechanical connection “interlock” at both ends of the section. These mechanical connections interlock with one another to form a continuous wall of sheet piling. Steel sheet pile applications are typically designed to create a rigid barrier for earth and water, while resisting the lateral pressures of those bending forces. The shape or geometry of a section lends to the structural strength. In addition, the soil in which the section is driven has numerous mechanical properties that can affect the performance.

Steel sheet piling is classified in two construction applications, permanent and temporary. A permanent application is “stay-in-place” where the sheet piling wall is driven and remains in the ground. A temporary application provides access and safety for construction in a confined area. Once the work is completed, the sheet piling is removed.

(This article comes from L.B. Foster Piling editor released)

Combined wall steel sheet piling

Combined wall systems are used when regular sheet piles are not strong enough to carry the required loads. The two main components of a combined wall system are the king pile (Painer PSp profile or Pipe) and a pair or tripple of intermediary sheet piles. The connector is the third component and it can be welded to or interlocked with the king pile and connects the king pile to the sheet pile. The intermediary sheet piles transfer the soil and water pressures to the king piles, which carry most of the load. The sheet piles are usually shorter, varying from 60% to 100% of the length of the king pile. The king piles are often designed to carry substantial vertical loads in addition to the normal bending loads.

Properties :

  • Modular system, which provides options for combined sheet piling plus optimum adaptation to suit structural and constructional requirements
  • Secure, structural connections
  • Interlocks not sealed by soil particles
  • Good driving characteristics thanks to essentially symmetrical arrangement of pile sections.

(This article comes from Piles&Machinery editor released)

Discover the Value of Vinyl Sheet Piling

Traditionally when it comes to installing sheet piling around a bridge pier or along an embankment we think of steel sheet piling.  Steel sheet piling are the most common, and have been one of the most effective methods of installing a deep foundation.  They have a long history of providing a robust barrier through shaped, interlocking sheets that can last for 75+ years.

On the other hand, when deep foundations are not required we search for solutions such as concrete retaining walls, soldier pile walls, or even concrete consolidation of historical masonry walls.  These solutions are a cost effective approach, however longevity can be sacrificed.

There is another solution that combines the strength of a sheet pile wall, the value of a concrete retaining wall, and modern-day technologies.  This involves the use of vinyl sheet piling.  Vinyl sheet piling comes in similar shapes and sizes as steel sheet piling, however it is made from Polyvinyl Chloride (PVC) so it resists degradation common in concrete walls.

Vinyl sheet piling can be used in several applications; however one of the most effective applications that we at Brennan have found is its use in concrete structure reinforcement.  In this application it is effectively used as a leave-in-place formwork that helps protect newly placed concrete in above and below-water repairs.  Vinyl sheet piling can be placed without the use of heavy equipment around an existing structure such as a bridge pier.  It is secured in place using a steel waler system and rebar.  The toe of the sheeting can be secured using grout bags.

Once secured, the concrete can then be placed using traditional methods, or as preplaced aggregate concrete (PAC).  The pressurization of installing the grout in the PAC method will consolidate the existing structure, increasing its strength.

The result is an aesthetically pleasing repair that combines long-lasting surface protection, with effective strengthening of the existing structure.  This method is cost effective and will last longer than traditional concrete retaining walls.

(This article comes from J.F. Brennan editor released)

Z-Type Steel Sheet Piling

Z-shaped sheet piles are called Z’s, because the single piles are shaped roughly like a horizontally stretched Z. The interlocks are located as far away from the neutral axis as possible to ensure good shear transmission and increase the strength-to-weight ratio. Z piles are the most common type of sheet pile in North America and can be used in a wide variety of applications. Retaining walls, cofferdams, parking garages, environmental barrier walls, and bulkhead walls for ports are just a few of their varied uses.

(This article comes from Skyline Steel editor released)

Universal Sheet Pile Threader

The Dawson Universal Sheet Pile Threader has been developed to enable a safe, easy and productive method of pitching sheet piles. The need for a “top man” is eliminated as all operations can be performed at ground or top frame level. The Universal Sheet Pile Threader can be set up for virtually all Z section and Larssen sheet piles, and once set correctly will quickly interlock the piles with one simple movement. Care should be taken during the set-up procedure to ensure that each adjustment is accurately set, extra time spent here will be saved tenfold during operation. Within one pile section there may be several variations. On a “Z” section interlocks are usually different at each end. The leading can also be left or right hand. The Universal Sheet Pile Threader can accommodate these variations with the simple adjustment of roller positions. This can be accomplished on site by offering the Sheet Pile Threader up to a pile and adjusting the rollers to the correct position. They are now set for a left or right hand threading.

Sheet pile threaders offer a complete ‘feet on the ground’ approach to steel sheet piling when used in conjunction with remote release shackles. Improve productivity and working safety.

The one basic guide frame is standard for ALL “Z” section piles, ALL straight web piles and “U” piles of size 2 and upwards. Below this size may require modifications to the main frame, but the principal of operation remains the same.

The different sections are accommodated simply by inserting appropriate rollers onto the lower spindles which form part of the lower clamp. These rollers fit the pile profile to give positive and accurate location.

(This article comes from Dawson Contruction Plant editor released)

Sheet piling interlock sealants in port construction applications

Over thousands of years, dating back to the port construction of Amathus in southern Cyprus, man has waged mostly losing battles on the effects of water infiltration on large-scale port construction projects. Until recently, many port designers seemed resigned that a certain amount of water infiltration through retaining structures was an inevitable reality.

However, recent advances in water-resistant material engineering have led to revolutionary developments in steel sheet piling interlock sealants. These sealants are not only leak-resistant under sustained high pressure, and a wide range of temperatures and environmental conditions, but, just as importantly, are easy and cost efficient to apply.

The number of German and worldwide port construction projects that require interlock sealant to prevent hydraulic penetration has risen dramatically over the last decade. Port authorities, such as those who oversaw the construction of a combined sheet piling wall for Bremerhaven container port, increasingly demand the application of interlock sealants. This is for two main reasons:

1. The desire for protection against water infiltration, which is most important when working inside a cofferdam surrounded by water.

2. Sealants can prevent corrosion in sheet piling interlocks, because they prevent salt water and oxygen from coming into direct contact with the inner interlock. Coatings are not suitable at this point because they cannot be applied in the interlock in full layers, and could cause slide-down stoppage of threaded interlocks. Therefore, sealants with high ad- and cohesion features are required in sheet pile interlocks, according to the displacement principle.

While there are only a few interlock sealants for port construction applications available on the market today, only one – WADIT® – combines three essential factors for a port designer: water resistance under extreme pressure and temperature fluctuations, ease of application and low cost.

WADIT is a proven sheet piling interlock sealant that can be used with all types of hot-rolled and cold-formed sheet piling interlocks in every possible environment (tropical to arctic), and is particularly useful for port construction projects.

Accredited hydraulic sealant tests have demonstrated that leakage through sheet pile walls is reduced by more than 95 per cent when interlock sealants are used. Furthermore, the studies show that sealed joint sheet pile cutoff walls are anywhere from 100 to 10,000 times more effective as groundwater flow barriers than unsealed interlock walls.

Civil engineers started out using WADIT mainly for sheet and pipe pile wall constructions for cofferdams, dams, and cutoff walls at environmental remediation sites.

(This article comes from PORT TECHNOLOGY INTERNATIONAL editor released)

What is the steel sheet piling cofferdam

Steel sheet piling cofferdam construction needs due to the water pit for dry construction, which requires the land and water on the outside pit stop, this time need to use sheet piles or other temporary structure on the outside to block water and soil, this is the cofferdam. Steel sheet piling cofferdam of steel sheet piling by using root cuttings fight, bite each other between steel sheet piling then, finally closed as a whole, can block the outside of the water and soil. Terrestrial channel construction is often used because not used exclusively as cofferdam construction, can not bite closely, under normal circumstances we commonly used type Larsen steel sheet piling, which is often said Larsen steel sheet piling cofferdam. Larsen steel sheet piling points IV, V-type, VI type IV is the most common type of steel sheet piling Larsen, Larsen steel can be divided into both domestic and imported, due to poor quality of domestic steel materials, large cofferdam structure the use of imported Larsen steel sheet piling. Cofferdam structures are needed to support the inside of the cofferdam, which requires cofferdam according to the size, depth, chosen steel, I-beam or H-beam were supporting. Small cofferdam can be their own experience in construction, but encountered a large cofferdam cofferdam need the whole structure was designed using finite element analysis software is generally designed so as to ensure the stability of the overall structure of the cofferdam.

How to ensure the structural stability of the steel sheet piling cofferdam?

Formed steel sheet piling cofferdam of steel sheet piling is composed of many root constituted by punched by the root, snap each other to form a closed whole. The most common is the use of steel sheet piling cofferdam Larsen steel sheet piling, steel sheet piling cofferdam structure of how to ensure its stability?

We commonly used type IV steel sheet piling cofferdam structures are needed to support the inside of the cofferdam, which requires cofferdam according to the size, depth, chosen steel, I-beam or H-beam were supporting.

We encountered a large cofferdam cofferdam need more overall structure design, finite element analysis software is generally designed so as to ensure the stability of the overall structure of the cofferdam.