Treatment method about soft and weak foundation basis selective structure type

Abstract

The invention discloses a treatment method about a soft and weak foundation basis selective structure type. The method includes the following steps that firstly, detailed investigation is performed ona plan-to-build engineering construction site, and a force holding layer range and the elevation of a foundation basis are selected; secondly, foundation pit excavation is performed till the selectedforce holding layer elevation and the excavation range are achieved, and the foundation pit bottom faces are kept on the same elevation as mush as possible; thirdly, a soil layer of the surface of aforce holding layer is treated, and the physical and mechanical characters of the soil layer are kept unified; fourthly, on the surface of the force holding layer or the surface part of the foundationpit, an anti-permeating anti-filtration cushion layer is laid; fifthly, whether anchoring pile construction is needed or not is judged; and if yes, the anchoring pile construction is performed; and sixthly, pouring construction of an extending raft plate basis is performed. By means of the technical scheme, the basis structure and the force holding layer are made to form a steady and reliable overall structure, the overall bearing force of a road, a bridge and other building bases can be substantially improved, the investment cost can also be saved easily, and the total construction period isshortened.

Description

Technical field [0001] The invention relates to the technical field of engineering geological reconnaissance, in particular to a processing method for selecting a structural type of a weak foundation. Background technique [0002] In recent years, due to the rapid development of the construction of roads and bridges and other transportation facilities, it is often necessary to cross the natural and poor soft foundations of small and medium-sized rivers, tidal flats, lakes, swamps, shallow ponds, wetlands and other areas. These areas generally not only have more complex weak foundations, but also The quaternary covering layer may be relatively deep. Due to the differences in the physical and mechanical properties of each layer of foundation soil, the different natural climate environment, human activities, etc., the bearing capacity of these foundation soils is often low, which makes it suitable for and alternatives during engineering construction. The supporting layer and basic ...

AI Technical Summary

Problems solved by technology

Due to the differences in the physical and mechanical properties of each layer of foundation soil, the difference in natural climate and environment, human activities and other reasons, the bearing capacity of these foundation soils is often low, so that they can be adapted and selected during engineering construction. The type of bearing layer and foundation structure is relatively limited

As far as the conventional weak ground treatment methods are concerned, such as rolling compaction, cushion replacement, drainage consolidation, vibration compaction, displacement and mixing, etc., not only time-consuming and labor-intensive, but also high investment costs, and It is also difficult to effectively guarantee the long-term reliability, stability and safety of the project

Images