Foundation setting method for high-rise building

Abstract

The invention discloses a foundation setting method for a high-rise building. The foundation setting method comprises the following steps that (1) bearing courses at pile ends are determined; (2) a plurality of rigid short piles are buried; (3) earth among pile grouting is performed between the multiple rigid short piles; (4) pile bottom post-grouting is performed on the rigid short piles; and (5)mattress layers are arranged at the pile tops of the rigid short piles. The foundation setting method for the high-rise building adopts the shallow buried short piles and the method of earth among pile grouting to constitute a composite foundation suitable for unstable terrains such as karst topography, so that the bearing capacity and deformation requirements of the upper high-rise structure canbe met, the stress control requirements of a lower layer can further be met, meanwhile, the requirements for reinforcement treatment of structures such as karst caves can further be met, and a lot ofmanpower, material resources and time are saved while ensuring quality.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a foundation setting method for high-rise buildings. Background technique [0002] When doing construction work, it is often encountered that there is an unstable soil layer in the middle and lower parts of the foundation, and the foundation may not be safe and stable due to excessive additional stress, especially when building high-rise buildings. The load is generally large, so the requirements for foundation setting are often high. The foundation foundation must not only meet the bearing capacity and deformation requirements of high-rise buildings, but also meet the requirements for foundation safety and stability. [0003] Commonly used foundations mainly include natural foundations, soil-rock composite foundations, shallow foundations with foundation treatment, and pile foundations. When using them, they need to be reasonably selected and designed according to factors such a...

AI Technical Summary

Problems solved by technology

However, when building in areas with relatively unstable terrain, such as karst areas full of karst caves underground, if natural foundations are used, the requirements for high bearing capacity and low deformation of the upper structure cannot be met; and if pile foundations are used, and There will be problems such as pile layout, pile quality control, and karst cave treatment. For example, if shallow buried short piles that do not pass through karst caves are used, the design requirements for bearing capacity cannot be met. Therefore, deep buried long piles that pass through karst caves must be used. It is necessary to strengthen the karst caves, and the karst caves are often widely distributed, deep, and poor in stability. Therefore, the pile foundation scheme is not only difficult to deal with, high in engineering costs, but also difficult to guarantee the quality of piles, and the feasibility of the scheme is poor.

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