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The two types of wall (bolted and berlinese) are built to retain soil from excavation, and possibly provide a sealing and foundations for a structure.
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In this technique, parts of the retaining wall (soldier piles, cast-in-place or precast columns) taking the passive earth pressure (at the toe) and the active earth pressure (multiple tie-backs or struts) are built before excavation commences.
When these are in place, excavation proceeds in stages (one to a few metres deep, depending on the stand-up time of the soil). Struts or ground anchors are immediately installed on the soldiers previously built, and sheeting is placed against the exposed soil faces.
Several stages of excavation may be necessary (there are cases of six rows of tie-backs). The sheeting spanning between the soldiers may be made of precast concrete slabs, wood timbers, steel beams or shotcrete.
The generic name of Berlin wall comes from the fact that the technique has been widely used in that city. There, the soldiers were steel beams, usually installed in boreholes a few metres apart. The system was mostly used as a temporary support of excavations.
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The soldier pile wall is a temporary or permanent retaining wall commonly
used for excavations in urban areas.
The method consists of :
Drilling regularly spaced boreholes in which metal beams are sunk
Installing cladding (wood, shotcrete, steel plates) between the beams as the excavation
progresses
The stability of the retaining wall is temporarily provided by struts or anchors except in shallow
excavations where the wall may be self-supporting.
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Berliner walls
Definition:
consistent wall of::
profiled vertical (piles or metal section)
wood shielding, prédalles or shotcrete
Characteristics:
only retained ground
only possible if the water level is lower than the level of earthwork
ground must have temporary cohesion to excavate and place the shielding.
without anchoring, displacement at the head considerable (plusieures cm) necessary pourque the passive resistance is formed.
possible ground excavation depending on the technique
Scope of application:
ground reserve (without sheet of water on the height of excavation
economic solution
|
|
|
The two types of wall (bolted and berlinese) are built to retain soil from excavation, and possibly provide a sealing and foundations for a structure.
|
|
In this technique, parts of the retaining wall (soldier piles, cast-in-place or precast columns) taking the passive earth pressure (at the toe) and the active earth pressure (multiple tie-backs or struts) are built before excavation commences.
When these are in place, excavation proceeds in stages (one to a few metres deep, depending on the stand-up time of the soil). Struts or ground anchors are immediately installed on the soldiers previously built, and sheeting is placed against the exposed soil faces.
Several stages of excavation may be necessary (there are cases of six rows of tie-backs). The sheeting spanning between the soldiers may be made of precast concrete slabs, wood timbers, steel beams or shotcrete.
The generic name of Berlin wall comes from the fact that the technique has been widely used in that city. There, the soldiers were steel beams, usually installed in boreholes a few metres apart. The system was mostly used as a temporary support of excavations.
|
|
The soldier pile wall is a temporary or permanent retaining wall commonly
used for excavations in urban areas.
The method consists of :
Drilling regularly spaced boreholes in which metal beams are sunk
Installing cladding (wood, shotcrete, steel plates) between the beams as the excavation
progresses
The stability of the retaining wall is temporarily provided by struts or anchors except in shallow
excavations where the wall may be self-supporting.
|
|
Berliner walls
Definition:
consistent wall of::
profiled vertical (piles or metal section)
wood shielding, prédalles or shotcrete
Characteristics:
only retained ground
only possible if the water level is lower than the level of earthwork
ground must have temporary cohesion to excavate and place the shielding.
without anchoring, displacement at the head considerable (plusieures cm) necessary pourque the passive resistance is formed.
possible ground excavation depending on the technique
Scope of application:
ground reserve (without sheet of water on the height of excavation
economic solution
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