RETAINING SYSTEMS (SHORING)

Retaining wall blocks are structures that hold back soil or rock from falling due to landslides caused by gravity or erosion. Watertight retaining walls (cofferdams) are employed in conjunction with an appropriate De-watering scheme to hold back water and clay in wet areas. In deep excavations, these walls have to withstand great lateral earth pressures and hydrostatic pressures caused by groundwater. Depending on shoring construction design requirements, several pile types, shoring excavation, and configurations are used to construct retention systems. The variables, unknowns, and constraints involved in retaining wall design are many, making it a complex and challenging task. A retaining wall design has to account for a number of factors, foremost being the stability of the wall itself. A thorough analysis of the geotechnical investigation report, project requirements, construction sequence, type of proposed structure, and other factors are initially performed by design engineers.

Shoring Construction:

Our shoring construction work encompasses depths of up to 30.0 m and wall thicknesses of up to 1.5 m. We can provide value-added services based on our skills and experience in shoring wall design development. Based on depth, subsoil conditions, and neighboring constructions. The best wall shoring construction company in Dubai provides a variety of shoring schemes such as H Beam Wall, Contiguous Pile Wall, Mini Pile Wall, and Secant Pile Wall structures.

H Beam Wall Shoring

For the implementation of H Beams, based on the subsoil conditions and surrounding buildings, rotary drilling, continuous flight auger drilling, or vibratory techniques are used. Our H Beam Shoring construction approach integrates a cantilever wall, a constrained wall by tiebacks/struts, or a mix of the two, allowing us to provide our clients with expense solutions.

Sheet Pile Wall Shoring

To satisfy changing requirements of the project, fleets are outfitted with Vibro hammers of multiple frequencies and weights. When operating in close proximity to sensitive structures, vibration control/reduction measures are used.

Secant Pile Wall Shoring

Our shoring construction experts construct Secant Piles with diameters ranging from 200 mm to 1500 mm thanks to handmade hydraulic drills. The utilization of a powerful rotary motor and lengthy chambers allows for precise and economical over-cutting of primary piles. Our circular tunnel construction experience extends up to a depth of 30 m using secant piles.

This shoring construction analysis, coupled with the experience of the designers, generates the first input for computer software (such as ReWaRD® from Geocentrix and STAAD.pro® from Bentley) to further analyze the complex loads and perform the calculations. Typically a retaining wall designer has to consider the following:

STRUCTURAL INTEGRITY

By applying shoring construction process on satisfactory stability design, structural calculations are made on the wall itself to determine the proper sizing of longitudinal and shear reinforcement.

RETAINING WALL SUPPORT

Designers have to also consider if the retaining wall itself requires further support (such as anchoring or bracing).

SAFETY FACTORS

An appropriate factor of safety is incorporated into the design calculations for each element of the design criteria.

PRESSURE

Earth and water pressures that are expected to act on the wall

EXTERNAL STABILITY

The overall external stability of the retaining wall acting as one whole body (sliding and overturning) Sliding instability is caused by horizontal forces while overturning is caused by the moments generated from these forces.

BEARING STABILITY

Overturning increases stresses at the wall toe and decreases them at the heel; thus the bearing capacity of the foundation soil has to be considered to ensure that wall deflections are kept within acceptable values.

GLOBAL STABILITY

Even when external and bearing stabilities are acceptable, retaining walls may still be susceptible to an overall rotational type failure. This type of failure originates well below the retaining wall itself due to weaker soil zones.

  • CONTIGUOUS BORED PILE WALL
  • SECANT BORED PILE WALL
  • SHEET PILE WALL
  • SOLDIER / KING PILE AND LAGGING WALL
  • DIAPHRAGM WALLS
  • SOIL NAILING
  • ANCHORS AND TIEBACKS
  • STRUTTING AND BRACING SUPPORT