Research method for working performance of energy pile after solidification of soil body around pile

Abstract

A research method for working performance of an energy pile after solidification of soil around the pile relates to the technical field of civil engineering, and comprises the following steps: step 1, manufacturing a model pile; step 2, experiment preparation; 3, collecting experimental data under a common condition; 4, soil around the pile is treated; 5, experimental data are collected after the soil body around the pile is processed; and step 6, analyzing experimental data. According to the method, comparative analysis is conducted on experimental data under common conditions and experimental data obtained after various pile periphery soil bodies are processed, the soil body processing method capable of guaranteeing the performance of the model pile body can be obtained through comparative analysis, and the soil body processing method capable of damaging or reducing the performance of the model pile body can be analyzed; therefore, the method has good guiding significance for engineering practical activities.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a method for researching the working performance of an energy pile after the soil around a pile is solidified. Background technique [0002] The traditional pile foundation only exerts the bearing capacity of the pile foundation and does not exchange heat with the surrounding soil, while the energy pile is different from the traditional pile foundation. It also exchanges heat with the soil around the pile while ensuring the bearing capacity. It will cause the temperature of the energy pile itself to be different from the surrounding soil, so the deformation force of the energy pile is very different from the traditional pile foundation, and these differences may make the energy pile withstand several centimeters more than the traditional pile foundation. The deformation and the additional stress of tens of MPa greatly affect the bearing capacity of the pile body, which ...

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Problems solved by technology

[0003] The main methods used by scholars can be roughly divided into three categories. The first category is in-situ experiments. This type of experiment is often carried out with the help of actual projects. Energy piles of equal size and various sensors are embedded in actual projects. The data and information collected by this type of experiment are relatively real and reliable, but the cost is too high, the construction process is troublesome, and experiments under different control conditions cannot be carried out; The construction of the model, the analysis and calculation of the energy pile, the main advantage of this type of experiment is that there is no specific construction situation constraints, and the energy pile in various situations can be fully studied, especially the work of the energy pile in some extreme cases Conditions and stress-strain changes can be studied through simulation software, but this type of research method lacks the comparative support of actual data, and the simulated situation is ideal, so the research results often lack credibility, and different numerical simulation software The simulation calculation methods used are different; the third type is indoor scaled-scale experiments. This type of experiment collects data by making scaled-scale model piles in proportion to the actual energy piles in the laboratory, and carrying out various experiments in the experimental box. This kind of experiment has a wide range, low cost, is convenient and easy to carry out, and can be compared and verified with the results of numerical simulation, so it has become a research method for more and more scholars.

[0004] However, the current indoor energy pile experiment lacks fixed standards, and the entire experimental process from the energy pile model production is determined by scholars themselves, and the existing research methods lack the research on the soil around the pile, so Determining a new research method is the necessity of indoor experimental research on energy piles

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