Earthquake region roadbed supporting, retaining and damping structure and construction method thereof

Abstract

The invention discloses an earthquake region roadbed supporting, retaining and damping structure and a construction method thereof. The damping structure comprises a side ditch, a side ditch platform, a reversed filtering layer, an energy-dissipating and damping layer, a soil retaining wall, a wall top platform and a drainage hole; the side ditch platform is arranged on one side of the side ditch; the reversed filtering layer, the energy-dissipating and damping layer and the soil retaining wall are arranged between the side ditch platform and a reinforced rock-soil body slantways; the reversed filtering layer, the energy-dissipating and damping layer and the soil retaining wall are arranged outside the reinforced rock-soil body sequentially from inside to outside; the lower part of the soil retaining wall slantways extends to the lower part of the side ditch platform; the lower parts of the reversed filtering layer and the energy-dissipating and damping layer are in parallel and level with the upper surface of the side ditch platform; the wall top platform is horizontally poured on the energy-dissipating and damping layer, the reversed filtering layer and the reinforced rock-soil body; the energy-dissipating and damping layer has an elastic three-dimensional reticulate structure. During the construction, after cutting soil and stone and a soil retaining wall base are excavated, the reversed filtering layer is constructed; the energy-dissipating and damping layer is paved; the soil retaining wall is poured; the wall top platform is constructed; the side ditch and the side ditch platform are constructed. Energy-dissipating and damping effects are remarkable, the drainage effect is good, construction is convenient and rapid, the quality is easy to control, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of subgrade geotechnical engineering, in particular to a subgrade retaining and damping structure in an earthquake zone with remarkable energy dissipation and shock absorption effect, good drainage effect, convenient construction and easy quality control, and a construction method thereof. Background technique [0002] my country is located between the circum-Pacific seismic belt and the Eurasian seismic belt, with shallow focus, high intensity, and wide distribution. It is one of the countries with the most serious earthquake disasters in the world. Since the 20th century, my country has experienced major earthquakes such as the magnitude 8.5 earthquake in Haiyuan, Ningxia in 1920, the magnitude 7.8 earthquake in Tangshan in 1976, the magnitude 8 earthquake in Wenchuan, Sichuan in 2008, and the magnitude 7.1 earthquake in Yushu, Qinghai in 2010. The casualties and losses were very heavy. . [0003] The impa...

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Problems solved by technology

[0006] 1. The spring has a certain elastic limit, fatigue limit and impact toughness. It is difficult to achieve the shock absorption effect of the earthquake with a limited number of springs, and under the action of long-term stress, the spring is easy to reach the fatigue limit and fail. Therefore, the The practicability of the structure is poor, it cannot meet the long-term use, and the service life is short;

[0007] 2. Since the lower part of the upper body of the foundation is also equipped with elastic devices, the construction of the lower part is more troublesome, and the construction quality is not easy to control

[0008] 3. There is no drainage device, and the accumulated water is not easy to discharge, which affects the service life of the earthquake-resistant foundation

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