Construction method of recyclable prefabricated composite soil nail wall support based on anchor cable and soil nail

Abstract

The invention discloses a construction method of a recyclable assembled composite soil-nailed wall support based on anchor cables and soil nails. The construction method comprises the following steps: manufacturing the recyclable anchor cables; arranging a foundation pit slope, determining waist beams, anchor cable hole locations and node locations, and drilling holes in the slope; arranging the waist beams, enabling the anchor cables to penetrate through the waist beams to be fixed and grouting by virtue of grouting holes; laying nodes, and inserting the recyclable soil nails in the slope; fixing panels between each row of anchor cables and each adjacent row of soil nails, and conducting tension and lockup on the anchor cables after cement slurry reaches the design strength; sealing the connection parts between the any two adjacent panels and between the panels and the waist beams with a sealant; and continuously excavating a foundation pit and supporting; and after the supporting is completed, dismounting supporting materials sequentially layer by layer to realize reutilization. The construction method has the beneficial effects that all supporting structural members can be processed in a factory, and can be assembled to be constructed; and the recycling and reuse of the supporting materials are realized, so that resources can be saved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to foundation pit and side slope support, in particular to a construction method for recyclable assembled composite soil nail wall support based on anchor cables and soil nails. Background technique [0002] Green building and building industrialization are the inevitable requirements of national ecological construction. At present, with the continuous advancement of urbanization in our country, there are more and more foundation pit projects. The composite soil nail wall support structure combined with prestressed anchor cable and soil nail wall has been widely used in foundation pit engineering, but only as a temporary support measure. After the construction of the main underground structure is completed, the composite soil nail wall is abandoned underground. Practice has proved that the prestressed anchor cables and soil nails left in the ground have become dangerous obstacles to the subsequent development of underground spac...

AI Technical Summary

Problems solved by technology

Practice has proved that the prestressed anchor cables and soil nails left in the ground have become dangerous obstacles to the subsequent development of underground space, resulting in geological environmental pollution and a large amount of waste of construction materials

[0003] The purpose of the present invention is to solve a series of problems such as waste of temporary engineering building materials, geological environment pollution and underground space development obstacles, and provide a composite soil nail wall support construction method based on recyclable prestressed anchor cables and soil nails, which is suitable for construction Industrialization and green development trend, realize the prefabricated, recyclable and recycling of foundation pit and slope support

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