Assembly type anti-seismic anti-freezing-thawing deformation corrugated plate rigid-flexible retaining wall

Abstract

The invention relates to an assembly type anti-seismic anti-freeze-thaw deformation self-adaptive corrugated plate rigid-flexible retaining wall. The retaining wall comprises a bottom plate and a retaining plate above the bottom plate, and the cross section of the retaining wall is in an inverted T shape; the bottom plate transversely comprises a plurality of rows of unit plates which are sequentially a front end bottom plate, a middle connecting bottom plate and a foundation bottom plate from inside to outside and are assembled and connected through inserting grooves and inserting strips in the end faces; the retaining plate comprises a plurality of stand columns and an arched steel corrugated retaining plate among the stand columns, strip-shaped grooves are formed in the two longitudinalside faces of each stand column, and the ends of the arched steel corrugated retaining plate are inserted into the strip-shaped grooves of the stand columns; and the longitudinal inserting grooves are formed in the surface of the foundation bottom plate, and the bottoms of the stand columns and the arched steel corrugated retaining plate are inserted into the inserting grooves of the foundation bottom plate. According to the retaining well, a prefabricated assembly type construction method is adopted, foundation deformation caused by huge horizontal seismic force and frost heaving force and vertical frost heaving force can be adapted, and the cyclic deformation adaptive capacity is achieved.

Description

technical field [0001] The invention relates to the technical field of retaining walls, in particular to an assembled rigid-flexible retaining wall with anti-seismic, freeze-thaw and deformation adaptive corrugated plates. Background technique [0002] Because the Qinghai-Tibet Plateau has the characteristics of high altitude, high cold, hypoxia, long freezing season, and high seismic fortification intensity, when constructing the retaining wall here, there is an operating environment of high cold and hypoxia, and the frost heaving force of the retaining wall in the permafrost area is much greater than Earth pressure, the seismic fortification intensity in the area is Ⅷ~Ⅸ degree area (the current code only gives the fortification standard of Ⅷ degree area and below) and other world problems. At present, there are few researches and experiments on retaining walls in permafrost regions, especially the frost heaving force on the foundation and back of the retaining wall. There ...

AI Technical Summary

Problems solved by technology

The existing retaining walls on the Qinghai-Tibet Plateau are generally damaged after 1 to 2 freeze-thaw cycles. The main reason is that after construction disturbance, when the soil on the back of the wall and the foundation soil are frozen, the back of the wall and the foundation will be damaged several times or even Frost heaving force dozens of times greater than the active earth pressure, conventional retaining walls do not have the ability to adapt to deformation, and are generally damaged by extrusion deformation

At present, the existing seismic retaining walls are mainly based on the installation of seismic flexible devices on the back of the wall to resist the horizontal force of the earthquake, but its mechanical characteristics make it unable to adapt to permafrost regions. Requirements for freeze-thaw and assembly construction

[0003] At present, the Sichuan-Tibet Expressway, Qinghai-Tibet Expressway, and Sichuan-Tibet Railway are all in the survey and design stage, especially the Qinghai-Tibet Expressway. Most of the road sections are in the permafrost area, and there is an urgent need for suitable earth retaining materials with good earthquake resistance, freeze-thaw resistance, and high degree of mechanized construction. Based on this, it is necessary to develop a set of retaining walls that can adapt to the plateau hypoxia and high cold working environment, and can also adapt to frost heaving, thawing and cyclic deformation, and have good seismic effect.

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