A kind of anti-seismic support structure and construction method of pile foundation retaining wall containing EPS buffer layer

Abstract

The invention discloses a pile foundation and retaining wall anti-earthquake retaining structure comprising EPS buffer layers and a construction method. The pile foundation and retaining wall anti-earthquake retaining structure comprises gravity retaining walls, the EPS buffer layers, a concrete base and anti-slide piles. The anti-slide piles and the concrete base penetrate through a covering soil layer and are anchored into a stable soil layer. The concrete base is provided with grooves matched with the anti-slide piles which are inset into the grooves in the concrete base. The second EPS buffer layer is arranged between the anti-slide piles and the concrete base. The anti-slide piles are flush with the top of the concrete base. The gravity retaining walls are fixed to the tops of the anti-slide piles and the concrete base. The backs of the gravity retaining walls and the back of the concrete base are located in the same plane. The first EPS buffer layer is attached to the backs of the gravity retaining walls and the concrete base. The pile foundation and retaining wall anti-earthquake retaining structure can well adapt to malloseismic areas, is especially suitable for high fill projects with certain anti-earthquake requirements and has the advantages of being good in overall stability, good in anti-earthquake performance, convenient to construct, economical and the like.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering slope stability support, and relates to an anti-seismic support structure and construction method of a pile foundation retaining wall containing an EPS buffer layer, in particular to a construction method suitable for high filling engineering on complex terrain in western mountainous areas. The seismic retaining structure of pile foundation retaining wall with EPS buffer layer and its construction method. Background technique [0002] Most of the western regions of my country are earthquake-prone areas. In recent years, with the large-scale development of transportation infrastructure construction in the western regions, a large number of high-filling projects have appeared in mountainous areas. Such high-filling projects have the characteristics of large filling height and slope Due to the characteristics of steep body and poor site conditions, the seismic stability of slope retaining struc...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a pile foundation retaining wall seismic retaining structure and construction method containing EPS buffer layer, to solve the problem that the overall rigidity of the existing rigid combined retaining structure is too large and has a strong restrictive effect on the slope soil. Under the action of earthquake load, the lateral earth pressure and deformation of the retaining structure are relatively large, which is easy to be unstable or damaged, and the seismic performance is poor

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