A Concrete Pile Foundation in the Alpine Permafrost Region

Abstract

The invention discloses a concrete pile foundation in an alpine permafrost region, which includes a formwork assembly and a heat conduction assembly, the formwork assembly includes a bottom form and a side form, the bottom form and the side form are detachably connected, and the bottom form is connected to a pouring cavity in the side form The top surface of the side form is provided with a pouring port. The heat conduction assembly includes a horizontal pipe, a heat conduction mother pipe, an extension pipe and a flow diverter. It is arranged in the side form and its top is equal to the top surface of the side form. The heat conduction mother pipe is connected to the bottom of the extension pipe, and the top of the extension pipe is connected to the drainer. The lower side of the middle part of the horizontal pipe is connected to the water storage pipe 1. Several water storage pipes 2 are arranged in the cavity, and the tops of the water storage pipes 2 communicate with the heat conduction mother pipe through conduits. The pile foundation can quickly introduce the heat of hydration generated in the concrete into the air, thereby improving the construction quality of the concrete foundation, reducing the heat introduced into the permafrost, and protecting the original local ecology.

Description

technical field [0001] The invention relates to the field of permafrost infrastructure construction, in particular to a concrete pile foundation in an alpine permafrost region. Background technique [0002] As the leading structure in my country's infrastructure construction, concrete structure has been widely used in many fields, and the service environment is becoming more and more complex. In high-altitude alpine permafrost regions, the ecological environment in permafrost regions is fragile and extremely sensitive to temperature changes, and the original ecosystem is vulnerable to collapse due to the impact of concrete hydration heat. [0003] The erection of transmission lines in high-altitude alpine permafrost areas is to first excavate the tower foundation, and then pour concrete on site. The large amount of heat of hydration generated during the concrete pouring process will heat up the concrete and speed up the evaporation of water. Excessive loss of water in the c...

AI Technical Summary

Problems solved by technology

The large amount of hydration heat generated during the concrete pouring process will heat up the concrete and speed up the evaporation of water. Excessive loss of water in the concrete will affect its construction quality

And the temperature inside the concrete rises, and the temperature difference between inside and outside will form a temperature stress. When the temperature difference is large, the temperature stress generated by it will often cause cracks in the variable section of the concrete structure and the small section of the concrete, affecting the concrete structure. The overall performance will reduce the strength and durability of the concrete structure and seriously affect the stability of the tower foundation

At the same time, a large amount of heat is introduced into the permafrost to raise the temperature of the soil, which will not only cause the bearing layer to soften and affect the construction period, but also seriously damage the original ecosystem.

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