01-11-2014, 02:17 PM
Abstracts: The stability of earth retaining structures in flood prone areas has become a serious problem in many countries. The two most basic causes of failure arising from flooding are scouring and erosion of the foundation of the superstructure. Hence, a number of structures like bridges employ scour-arresting devices, e.g., gabions to acting on the piers and abutments during flooding. Research was therefore undertaken to improve gabion resistance against lateral movement by means of an interlocking configuration instead of the conventional stack-and-pair system. This involved simulating lateral thrusts against two dimensionally identical retaining wall systems configured according to the rectangular and hexagonal gabion type. The evolution of deformation observed suggested that the interlocking design exhibits better structural integrity than the conventional box gabion-based wall in resisting lateral movement and therefore warrants consideration for use as an appropriate scour-arresting device for earth retaining structures. Gabion faced retaining walls are essentially semi rigid structures that can generally accommodate large lateral and vertical movements without excessive structural distress. Because of this inherent feature, they offer technical and economical advantage over the conventional concrete gravity retaining walls. Although they can be constructed either as gravity type or with gabion faced reinforced earth walls as they are more suitable to larger heights. Reinforced soil type, this work mainly deals this work mainly deals with gabion faced reinforced earth walls as they are more suitable to larger heights. A gabion wall is a retaining wall made of stacked stone-filled gabions tied together with wire. Gabion walls are usually bettered or stepped back with the slope rather than stacked vertically. In short a gabion is a cage, cylinder, or box filled with rocks, concrete, or sometimes sand and soil. It plays a positive role in earth retaining, mud-rock flow prevention, slope stabilization, landslide treatment, and soil erosion control, etc. Gabion retaining walls are regarded as a flexible and free drainage system, which can effectively resist the disturbing forces. It is used in civil engineering, road building, and military applications. For erosion control, caged riprap is used. For dams or in foundation construction, cylindrical metal structures are used. In a military context, earth- or sand-filled gabions are used to protect artillery crews from enemy fire. The most common civil engineering use of gabions is to stabilize shoreline, stream banks and as retaining walls, temporary floodwalls, silt filtration from runoff, for small or temporary/permanent dams, river training, or channel lining. Gabions are also used as fish barriers on small streams. We are going to do detail study on gabion retaining wall, existing on BHATAR ROAD constructed by Surat Municipal Corporation (SMC) with the help of employee of SMC and directed by our guide Divyangini ma’am.