Composite building foundation based on waste steel slag

A composite, waste steel slag technology, applied in the field of building foundations, can solve problems such as difficult to support piles or deep foundation improvement methods, easy fractures at joints, poor economic effects, etc., to achieve good economic effects, save resources, and construction easy effect

Inactive Publication Date: 2007-05-30
LIAONING PROVINCIAL TRANSPORTATION PLANNING & DESIGN INST
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In the case of very deep soft soil layer, due to the limitation of construction conditions, it is difficult to apply support piles or deep foundation improvement methods
And in the construction of low-rise (medium-light) buildings, when using support piles, the combination of raft foundation and friction piles, deep foundation improvement and other foundation forms, compared with the upper buildings, it often becomes the foundation construction method with poor economic effect
At the same time, in the investigation of the results of earthquake disasters, it has been shown that when using pile foundations, large-scale disasters such as fractures are prone to occur at the connection between the foundation and the superstructure

Method used

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  • Composite building foundation based on waste steel slag
  • Composite building foundation based on waste steel slag

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Embodiment Construction

[0016] Composite foundation using scrap steel slag as foundation improvement material can be carried out in the following form.

[0017] 1. Combined with raft foundation or strip foundation

[0018] For buildings with medium and high-rise foundations in soft soil areas, while ensuring the bearing capacity of the foundation, it is also necessary to control the deformation of the foundation within the required range. At this time, it can be implemented according to the scheme shown in Figure 1. The crushed scrap steel slag (additives such as lime and cement can be added) is combined with the field soil in the form of deep mixing or high-pressure injection to form the lower cylindrical foundation improvement part 1. The cylindrical foundation improvement part 1 can be carried out in depth according to the deformation requirements. Mediation. Then carry out shallow improvement. This part can be formed by mixing untreated scrap steel slag with on-site soil. At this time, it is nec...

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Abstract

The invention relates to a compound building foundation using waste steel residue, which is a building structure style, comprising the style that modified part is combined with the raft foundation or the strip foundation, the lower part is cylinder modified part, the middle part is shallow modified part and the upper part is raft or strip foundation of reinforced concrete; the style that modified part is combined with the independence foundation, the lower part is shallow modified part and the upper part is the independence foundation. In the invention waste steel residue is used to improve the soft soil so that the rigidity of improved soil is less than the one of pile, meanwhile the improved soil is provided with relative bigger viscosity and certain compressibility. It can absorb the energy of earthquake wave efficiently and achieve the no-shake effect.

Description

technical field [0001] The invention relates to a building foundation, in particular to a composite building foundation based on scrap steel slag. Background technique [0002] To build a building on a soft soil foundation, it is first necessary to solve the settlement problem of the foundation (full settlement and differential settlement). Buildings on soft soil foundations generally use pile foundations, deep improved foundations, or composite foundations that combine piles and raft foundations. When supporting piles are used, since the pile body penetrates the weak layer and is placed on the support layer of the foundation, and the pile body is completely rigid relative to the weak layer, when the surrounding soil of the foundation settles due to changes in natural conditions, the building will There will be a step difference between the ground and the foundation due to inconsistent deformation, which will cause obstacles to the performance of the building. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/26E02D5/46
Inventor 李伟
Owner LIAONING PROVINCIAL TRANSPORTATION PLANNING & DESIGN INST
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