High and cold frozen soil area concrete pile foundation

Abstract

The invention discloses a high and cold frozen soil area concrete pile foundation. The foundation comprises a template assembly and a heat conduction assembly, the template assembly comprises a bottomdie and a side die; the bottom die is detachably connected with the side die; the bottom die communicates with the pouring cavity in the side die; a pouring port is formed in the top surface of the side die; the heat conduction assembly comprises a horizontal pipe, a heat conduction mother pipe, an extension pipe and a drainage device. The horizontal pipe penetrate through the bottom die, the middle communicates with the bottom end of the heat conduction mother pipe; the heat conduction mother pipe is vertically arranged in the side die, the top end of the heat conduction mother pipe is flushwith the top face of the side die, the heat conduction mother pipe is connected with the bottom of the extension pipe, the top of the extension pipe is connected with the drainage device, the lower side of the middle of the horizontal pipe is connected with the first water storage pipe, a plurality of second water storage pipes are arranged in the side die pouring cavity, and the top of the second water storage pipe communicates with the heat conduction mother pipe through a guide pipe. According to the pile foundation, hydration heat generated in concrete can be rapidly guided into air, so that the construction quality of the concrete foundation is improved, the heat guided into frozen soil is reduced, and local original ecology is protected.

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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