A road landslide emergency and permanent support integrated structure and construction method

Abstract

The invention discloses a road landslide emergency and permanent retaining integrated structure and a construction method thereof. The road landslide emergency and permanent retaining integrated structure comprises an emergency retaining structure and a later reinforcing structure; the emergency retaining structure comprises a stone cage, a steel pipe pile antiskid key, an anchorage device, a steel bar inhaul cable, geogrid, filling soil, an emergency rush-repair pavement and a fabricated steel plate; and the later reinforcing structure comprises a gravity-type retaining wall, later filling soil and a later widening pavement. An early emergency retaining structure can be constructed rapidly to ensure vehicle passing in the shortest time; and a gravity-type retaining wall reinforcing emergency retaining structure can continue to be constructed directly in the later period under the situation of ensuring emergency vehicle passing, the permanent retaining structure can be formed without altering the early emergency retaining structure, and higher social benefits and economic benefits are achieved. The construction method is simple and easy to implement, and construction is fast.

Description

technical field [0001] The invention relates to the field of geotechnical retaining structures and landslide geological disaster control engineering, in particular to an integrated structure and construction method for road landslide emergency and permanent retaining. Background technique [0002] With the advancement of my country's economic construction process, great achievements have been made in the economic development of mountainous areas, and the number of mountainous roads is also increasing. Due to the complex geological conditions in mountainous areas, road collapses occur from time to time. On July 16, 2018, affected by heavy rain, 16 mountain roads collapsed in the Beijing area, causing long-term traffic interruptions. On May 3, 2016, a landslide occurred in the Nanjing area of ​​Zhangzhou City, Fujian Province, and the mountain collapsed twice during the rush repair process, resulting in road interruption. On October 15, 2011, heavy rainfall caused a serious l...

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Problems solved by technology

[0003] Most roadbed collapses are accompanied by geological disasters, especially earthquakes, debris flows caused by heavy rains, etc. Measures such as cast-in-situ piles not only have a long period and a complicated construction process, but also require a large construction site, which will greatly disturb the landslide slope and easily cause secondary slippage.

The document with the application number 201510580014.X discloses a composite structure and method of anti-sliding key-steel pipe piles for repairing collapsed subgrades. The gates are all finished products, so it can significantly improve the progress of the repair of the collapsed roadbed and speed up the opening time. However, in order to speed up the speed of repairs, the composite structure is a temporary project, and the roadbed repair will be strengthened in the later stage

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