Pile foundation box type retaining wall

Abstract

The invention discloses a pile foundation box type retaining wall. The pile foundation box type retaining wall comprises a box body and further comprises foundation piles, a cushion layer and a bearing platform. The box body is fixedly connected to the bearing platform, the bearing platform is fixedly connected to the cushion layer, the cushion layer is fixedly connected to the pile tops of the foundation piles, and the foundation piles are poured into a foundation. The interiors of the box body, the bearing platform, the cushion layer and the foundation piles are connected into a whole through rebars. The functions of retaining soil and reinforcing an unstable slope are integrated, the situation that a gravity retaining wall cannot be arranged due to insufficient bearing force in a soft soil area can be well offset, and the pile foundation box type retaining wall has the beneficial effects that the requirement for the bearing force of the foundation is not high, the use quantity of reinforced concrete is reduced, the engineering manufacturing cost is reduced, the engineering environmental suitability is high, and a retaining effect can be effectively exerted. When the pile foundation box type retaining wall is 12 m or higher and is arranged in soft soil or areas adjacent to water and rock or landslide road sections, the investment can be effectively reduced, and the reliability and the durability are improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a retaining structure in a special difficult environment, in particular to a pile foundation box-type retaining wall. Background technique [0002] In the current retaining works, the types of retaining walls commonly used include gravity type, buttress type, pile plate type and so on. [0003] Among them, the gravity retaining wall mainly relies on its own weight to maintain the overall stability. It is often used to build block stones, which can be used to support embankments and road cuttings. The wall height should not exceed 12 meters. The section size is large and the wall is heavy. The requirements for foundation bearing capacity are high. [0004] The buttress-type retaining wall adopts reinforced concrete structure, which is suitable for filling road sections with low foundation bearing capacity. The height of the wall should not exceed 15 meters. When it incre...

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Problems solved by technology

[0004] The buttress-type retaining wall adopts reinforced concrete structure, which is suitable for filling road sections with low foundation bearing capacity. The height of the wall should not exceed 15 meters. When it is increased, the bending moment at the lower part of the vertical wall will be large, the amount of reinforced concrete will increase, and the economy will decrease. Moreover, due to the influence of the supporting ribs, it is difficult to fully compact the backfill of the wall

[0005] The pile-slab retaining wall maintains stability by using the anchoring effect of the deeply buried anchorage section and the passive resistance to resist the lateral earth pressure. It is mainly used for special sections such as topsoil and homogeneous rock foundations with thin strongly differentiated layers, embankment retaining, landslides, etc. For treatment, the height of the load-bearing section should not exceed 12 meters, which has the advantages of small excavation surface, relatively safe construction, and unlimited wall height. However, large horizontal displacement or rotation may occur at the pile top of the pile-slab retaining wall, so generally Not suitable for soil foundations

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