Composite pile foundation of open caisson pile adding

Abstract

The invention relates to a composite pile foundation of open caisson pile adding. The composite pile foundation comprises a single open caisson foundation, steel rod parts with threads, a side wall steel plate with a ring pull and counterweight pressing blocks, the centre of the lower part of the single open caisson foundation is provided with a plurality of steel rod parts with the threads, the upper ends of the steel rod parts with the threads areprovided with the counterweight pressing blocks, the counterweight pressing blocks are fixedly arranged at the bottom of the singleopen caisson foundation, and the outer side wall of thesingleopen caisson foundation is provided with the side wall steel plate with the ring pull. According to the composite pile foundation of the open caisson pileadding, the composite pile foundation is a novel open caisson pile adding composite foundation form with the adjustable length of a pile body, an adjustable stress position of a caisson body and the adjustable self-weight of the caisson body, and further a open caisson pile adding composite foundation form with an adjustableposition of a stress action point of the open caisson foundation, and thevariable length of the pile body and self-weight of the open caisson foundation in an experiment,indoor experiment operation of open caisson stress mechanism research is more convenient and fast, working efficiency is improved, and experimenting is more accurate.

Description

technical field [0001] The invention relates to a composite pile foundation with piles added to caissons, and belongs to the technical field of civil construction experiment foundations. Background technique [0002] With the vigorous development of civil engineering in China, experimental subjects combined with various practical projects emerge in an endless stream. Pile foundation model experiments are often carried out. The flexible model device can adapt to various mechanical properties of the experiment to meet the actual needs of the project. At present, the form of caisson-pile foundation has been widely used abroad, but it is still in its infancy in China. Therefore, it is of great significance to clarify the advantages and characteristic laws of caisson-pile composite foundation. Compared with the full-scale field test, the indoor model test can supplement the field test due to its strong operability and high repeatability. The basic rules obtained from the indoor ...

AI Technical Summary

Problems solved by technology

The pure pile foundation is difficult to construct because the pile length is too long, the flexibility is too large, the overall rigidity is relatively small, and the plane size of the single box foundation is large.

[0003] Common indoor model test pile foundation has the following disadvantages: 1) The length of the pile and the depth of the pile itself cannot be changed in the experiment, and more piles need to be prepared, which wastes materials; 2) The self-weight of the foundation in the experiment cannot be flexibly changed , It is troublesome to load and change the self-weight of the ordinary model, and the loading block cannot be fixed, which affects the accuracy of the experiment; 3) The horizontal loading of the pile foundation cannot change the position flexibly, without setting a suitable fixed position, and the position change is inaccurate without a suitable scale; 4) The cover of the experimental model cannot be disassembled at any time. When the foundation soil is prepared in the experiment, the open foundation will enter the sand, which will affect the actual covering load

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