Light prefabricated type concrete plate column foundation and construction method thereof

Abstract

The invention discloses a light prefabricated type concrete plate column foundation and a construction method thereof. The foundation comprises a prefabricated lightweight aggregate concrete stand column and an assembly lightweight aggregate concrete bottom plate, a connecting sleeve is connected to the tail ends of longitudinal steel bars of the prefabricated stand column, one end of the connecting sleeve is flush with the concrete bottom face of the stand column, the prefabricated bottom plate extends out by a certain length of reserved steel bars, the bottom plate is combined into a whole through a connecting part, and is connected with the stand column through grouting of the connecting sleeve, the construction efficiency of the foundation can be obviously improved through the foundation, the transport cost is saved, and the construction lifting difficulty is reduced; and the capacity of resisting the adverse environmental impact by the foundation is improved, the service life is prolonged, energy and resources are saved, and the pressure on the environment is reduced.

Description

technical field [0001] The invention relates to the field of engineering technology, in particular to a lightweight prefabricated concrete slab-column foundation used in the fields of electric power, communication, construction and the like and a construction method thereof. Background technique [0002] More and more lifeline projects such as power and communication, as well as important buildings (structures) need to pass through deserts, permafrost, river networks, mud swamps, tidal flats, coastal soft soils and other foundation pit excavation, concrete pouring and maintenance difficulties areas; concrete foundations in severe cold and corrosion areas may suffer single or multiple damages such as freeze-thaw, sulfate corrosion, steel corrosion, carbonation, and abrasion, which threaten project safety; in addition, on-site mixing, pouring, and maintenance of concrete in harsh environments It is difficult to guarantee its quality. In order to overcome the problems of const...

AI Technical Summary

Problems solved by technology

[0004] Existing prefabricated prefabricated foundations include prefabricated concrete block prefabricated foundations, prefabricated concrete slats and section steel combined prefabricated foundations, etc., which involve the following issues: ① Prefabricated concrete components are all poured with ordinary concrete, and their bulk density is generally 2350kg / m 3 ~2400kg / m 3 , the weight of concrete is large, and transportation will consume a lot of resources; ②The self-weight and volume of prefabricated components are large, and the difficulty of hoisting increases, and the difficulty of transportation of the equipment required for hoisting also increases accordingly; ③In corrosive areas, steel components are prone to corrosion damage, which is not conducive to engineering safety; sulfate ions and chloride ions in corrosive soils will erode the concrete foundation; and ordinary concrete is greatly affected in the freeze-thaw environment, shortening the service life of concrete and affecting the safe operation of the project; ④ Harsh environment Ordinary concrete is prone to freeze-thaw damage, and the strength loss can reach 16.2%; ⑤Because of the various foundation forces and geological conditions, there are many sizes and specifications of the foundation design. It is difficult to mass-produce the existing prefabricated foundations, and the cost is difficult to reduce; ⑥ The existing prefabricated foundation mainly uses bolts to connect prefabricated parts, which requires a large amount of construction and poor durability in corrosive environments, which affects the reliability of the connection; ⑦The preparation of a large amount of ordinary concrete requires a large amount of natural stone, which is not conducive to environmental protection

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