Today 2021/09/21

Composite retaining structures

In most urban constructions, especially in coastal areas, excavation in loose and soft lands in conditions below groundwater level is inevitable due to the existence of basements and design requirements and high regional land prices, and most civil engineers face major concerns and challenges in this area.

In this regard, the existence of buildings the excavations, unsuitable land, high groundwater level, inefficiency and inadequacy of most excavations stabilization methods for lands with limited area and high cost of conventional guard structures from the perspective of implementers, are among the main challenges. Based on this and with the aim of overcoming the existing executive problems in this field, a steel composite guard structure was invented.



The process of constructing a composite retaining walls in excavating loose and soft lands can be widely used in excavating construction projects and urban constructions, especially in limited areas, the presence of loose and soft lands and high groundwater. Specially, in situations where other methods are not feasible.

This method will be a good complement in this regard. Therefore, the use of this method in the construction of urban structures with basements, in the implementation of drainage pumps and pumping water and sewage, and shallow underground reservoirs and many construction projects is possible.



  • In the presence of granular soil and high groundwater level that it is not possible to drill a well, the installation of vertical piles is done by high frequency hammering without the need to drill a well.
  • Possibility of using this method in lands with large or limited area
  • In granular and loamy soils, in addition to providing the necessary inhibitory force, it causes modification (creating cementation in the granular texture) of a significant volume of wall soil.
  • Economic efficiency and speed of implementation of this type of composite retaining walls is higher compared to other methods.
  • This system is not cumbersome and will not prevent construction operations.
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