Grouting reinforcement construction method for foundation bottom disengaging

Abstract

The invention relates to a grouting reinforcement construction method for foundation bottom disengaging. According to construction specification requirements, a foundation line is measured and drawn, and the size of the foundation needing to be removed and dismantled is drawn; foundation surface cutting is carried out, and a rebuilt new equipment foundation is normally constructed according to working procedures; slip casting pipes are manufactured and buried according to requirements, and slip casting pipe protection is performed; earthwork layered compaction and backfill are carried out; the upper portion structure construction of the foundation continues to be carried out, and pressure slip casting is carried out on defective areas such as crack areas, collapsing areas and empty areas of an original foundation below the whole closed foundation; and the surplus slip casting pipes on the exposed foundation surface are cut, blocked and subjected to surface repairing. According to the grouting reinforcement construction method for the foundation bottom disengaging, the foundation is constructed firstly, then slip casting is carried out, and foundation construction can be accelerated; closed type pressure slip casting is carried out, the slip casting effect is remarkable, and the quality is guaranteed; cross-operation of structure construction and the slip casting working procedure is avoided; the technological process is simple, and workers carry out operation easily; and slip casting materials are local materials, the construction cost is saved, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to a construction method for treating a concrete foundation, in particular to a construction method for grouting and reinforcement for hollowing out the bottom of the foundation. Background technique [0002] At present, as the country restricts some overcapacity projects and vigorously advocates low-carbon environmental protection, energy saving and emission reduction, and green construction, many projects have to undergo process adjustment or upgrading, and some equipment foundations on the production line need to be technically improved. Change to meet the existing process requirements. In the process of technical transformation of the foundation, part of it is often to remove the upper part of the original equipment foundation, and to rebuild it by planting bars or lapping with the original foundation reinforcement, and many deep foundations often need to be completely dismantled and drilled (penetrated) through the original e...

AI Technical Summary

Problems solved by technology

However, the removal of large-scale equipment foundations is done mechanically (hydraulic picks, pneumatic picks, electric picks, etc.), and the vibrations generated at this time often cause earthwork collapse, cracks, hollowing out of the bottom of the foundation, and hollowing under the adjacent foundations. and other phenomena, and the vibration during the reconstruction of the foundation will also cause landslides and subsidence of the surrounding soil, especially if the soil quality such as silt is not good, and it will be more serious when the groundwater level is high

When the new foundation is completed, the backfilled earthwork cannot make the bottom of the original foundation compact, nor can it be rammed. Even if there are temporary support measures for the foundation pit, the soil will generate lateral pressure on the support structure, causing the base plate to be hollowed out, resulting in foundation failure. Insufficient bearing capacity affects the safety of the structure

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