Classification of. Retaining walls. • Gravity wall-Masonry or Plain concrete. • Cantilever retaining wall-RCC. (Inverted T and L). • Counterfort retaining wall- RCC. Types of reinforced concrete retaining walls are cantilever retaining walls and counterfort retaining walls. Functions and parts of these retaining walls. In this type of retaining wall, counterforts (cantilevers) are provided on the earth side between wall and footing to support the wall, which essentially spans as a.
|Published (Last):||10 March 2015|
|PDF File Size:||12.34 Mb|
|ePub File Size:||1.85 Mb|
|Price:||Free* [*Free Regsitration Required]|
Each of these components are designed as a cantilever. In this type of wall the base slab as well as the stem of the wall span horizontally as continuous slabs between vertical brackets known as counterforts as shown in Fig.
COUNTERFORT RETAINING WALLS
Four Types of Concrete Retaining Walls – The Concrete Network
The inclined fill is also known as surcharge. Design of RCC footing for Wall. Monte Carlo method First-order reliability method. Prior to start of structural design of a retaining wall it is necessary to adopt some tentative dimensions for different components of the wall.
Besides loads due to retained material, the retaining wall may also be subjected to surcharged load due to automobile, rail road etc. Showing of 32 references.
Wall retaining partly submerged backfill. The passive pressure developed by the key resists sliding and raises the coubterfort of safety to required limit. The brackets in this case are known as buttresses and by virtue of their location they are subjected to compressive forces.
This type of wall with a key is shown in Fig. This buttressed wall is identical to a counterfort retaining wall with the main difference that the vertical brackets are provided in front of the wall on face opposite to the face retaining back fill as shown rrtaining Fig.
Sometimes the cantilever wall is constructed in the form of L. It is also assumed that the retaining wall is allowed to move away from the soil by sufficient amount so that the soil expands and evokes full shearing resistance and attains state of plastic equilibrium. Let the backfill be moist or dry up to a depth h 1 below the top of wall and let the backfill below this depth i.
Reliability Analysis of Counterfort Retaining Walls
The stability of the wall is partially provided by the weight of earth on the heel. It may also be defined as a wall provided to maintain ground at two different levels. It is necessary to determine, the pressure exerted by the soil in designing a retaining wall. Counterfort Retaining Walls When the height of the retaining wall to be provided exceeds 6 to 7m, counterfort retaining wall prove to be economical.
How well do we know what we are doing? For surcharged walls b may vary between 0.
Design of Isolated Column Footing. Skip to search form Skip to main content. Due to buoyancy the weight of submerged soil will be less and its repose will also be much less. The intensity of lateral pressure at counterfott base of the wall in such a case is given by. Walls of a building Simulation. Design of Two-way Slabs. The backfill may be horizontal i. The pressure mainly depends upon the type of backfill material and the height of wall.
Wall retaining partly submerged backfill: This is shown in pressure diagram in Fig. To avoid failure of the retaining wall it is necessary that the following requirements are satisfied.
D&S_1: LESSON Cantilever Retaining Walls
The material retained by the wall is generally known as backfill. Structural Reliability Analysis and Design. The wall consists of three components, i the stem, ii the toe, and iii the heel. The horizontal component of all lateral pressures tends to slide the wall along its base.
Monte Carlo method Search for additional papers on this topic. To counterflrt this requirement the resultant of the sum of all vertical forces and the horizontal active pressure should cut the base of the wall within the middle third. The lateral pressure due to the backfill and surcharge if any tends to overturn the retaining wall about its toe.
Wall retaining submerged backfill: If the water table is such that the retained soil remain fully submerged, in such a case the saturated soil results in increasing the weight of the backfill, decreases the angle of repose of the soil which ultimately amounts to increase in pressure on the wall. Provisions of retaining walls become necessary in the construction of hill roads, embankments, bridge abutment, basement in buildings, water reservoir, in preventive measures against soil erosion, in landscaping etc.
Journal of Geotechnical and Geoenvironmental….
Cantilever Retaining Walls In this case wall has only two components i.