Zhangtang Railway Tangshan Section - Reinforced Retaining Wall Project
Material：EG130R
Date：2015
Location：Hebei Province, China
Description：The newly constructed Zhangtang Railway serves as an export channel in the northern coal transportation corridor of the "Three Wests" region, facilitating energy exports from eastern and western Inner Mongolia and northern Shaanxi.
Spanning 530 kilometers, it is a Class I heavy-haul line with a design speed of 120 km/h. Dynamic stress tests show that areas within 2 meters of the subgrade surface are significantly impacted at shoulder sections, which are critical for retaining structures. To minimize land occupation, an embankment-type reinforced earth retaining wall is used. The test section of the wall, located between DK445+200.00 and DK445+558.53 in Tangshan, passes through an industrial area. The retaining wall has a height of 5.5 to 7.0 meters, with reinforcing strips made of 8.0-meter-long HDPE uniaxiel Geogrids spaced 0.3 meters apart. The slope is protected by hexagonal hollow concrete blocks.
Benefits:Improved stable and high-capacity transport for bulk cargo, enhanced land conservation, and increased structural durability and construction convenience.
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