Stepless yielding fabricated retaining wall supporting system and construction method

Abstract

The invention discloses a stepless yielding fabricated retaining wall supporting system and a construction method. The system involves a UHPFRC stand column, a UHPFRC soil retaining plate, a C-shapedlocking buckle, a fastening bolt and planting soil, wherein the UHPFRC stand column is provided with a UHPFRC toe plate, a UHPFRC buttress rib, sliding beams, a pier block and an embedded groove, theUHPFRC toe plate and the UHPFRC buttress rib are arranged on the soil facing side of the UHPFRC stand column, the sliding beams are arranged on the two sides of the UHPFRC stand column, and three sliding beams are arranged on each side. The retaining wall supporting system is of a prefabricated fabricated structure, and has the characteristics of novel structure, easy industrial production qualitycontrol, simple and convenient construction procedure, high construction speed and reusability; and the sliding beams are arranged, and according to the expansion amount of the size, generated afterswelling soil absorbs water, of the swelling soil, size increasing yielding is realized so that the energy generated by the lateral pressure can be reduced, the overload can be effectively prevented,the stability and safety of the supporting system is improved, the planting soil can be sown in the embedded groove, the supporting structure can be effective greened, the engineering environment canbe improved, and the organic unity between engineering and environment can be realized.

Description

【Technical field】 [0001] The invention relates to the field of retaining wall support engineering, in particular to a retaining wall support system and construction method capable of stepless yielding. 【Background technique】 [0002] As a permanent or temporary building to prevent soil collapse, the retaining wall support structure is widely used in civil engineering, water conservancy and hydropower, railways and bridges, and water and soil conservation projects in expansive soil areas. However, expansive rock and soil is a highly plastic soil with expansion and contraction and super-consolidation. Its volume change is affected by water content. A considerable expansion outward thrust is exerted on the constrained object. Therefore, the retaining wall built in the expansive rock and soil area not only needs to bear the conventional earth pressure, but also needs to bear the expansion caused by the expansion deformation of the expansive rock and soil mass. Therefore, the re...

AI Technical Summary

Problems solved by technology

However, expansive rock and soil is a highly plastic soil with expansion and contraction and super-consolidation. Its volume change is affected by water content. A considerable expansion outward thrust is exerted on the constrained object. Therefore, the retaining wall built in the expansive rock and soil area not only needs to bear the conventional earth pressure, but also needs to bear the expansion caused by the expansion deformation of the expansive rock and soil mass. Therefore, the retaining wall support structure in the expansive rock and soil area is often prone to failure forms such as shearing, overturning and slipping, and the stability of the retaining wall support structure in the expansive soil area has become a difficult problem in practical engineering practice. unavoidable problem

[0003] Regarding the retaining wall in the expansive soil area, the more common support structure is made of ordinary concrete cast-in-place. The system does not have the function of yielding pressure, and its materials have defects such as low strength, poor tensile performance, slow construction speed, long construction period, non-recyclable, high maintenance costs in the later period, and some sites are difficult to meet the conditions for on-site pouring

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