Novel dynamic compactor and composite foundation construction method achieved through novel dynamic compactor

Abstract

The invention discloses a novel dynamic compactor and a composite foundation construction method achieved through the novel dynamic compactor. The novel dynamic compactor comprises a leveling base. A main rod and a hoisting device are arranged on the leveling base. The novel dynamic compactor is of a cylindrical hollow structure. An internally-arranged rammer is arranged in the main rod. The top of the internally-arranged rammer is connected with a mooring rope through a hook device. The mooring rope is wound around a fixed pulley at the top of the main rod to be connected to the hoisting device. The composite foundation construction method includes the steps of arrangement of point locations according to a construction drawing, arrangement of sand wells, dynamic compaction construction in holes, large-energy-level dynamic compaction, full compaction on a whole construction plant and the like. The novel dynamic compactor has the beneficial effects that data are accurately measured, abrasion is small, and service life is long; the internally-arranged rammer in a segmented manner is adopted, and the rammer is long and thin; and the height is increased, and the ramming energy is improved. The construction method has the beneficial effects that construction energy losses are small, and the reinforcement effect is good.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a novel dynamic compaction machine and a composite foundation construction method realized by using the same. Background technique [0002] With the continuous emergence of new technologies, many new techniques have appeared in dynamic compaction construction, such as: casting hammer punching and expanding piles, dynamic compaction in holes, etc. However, due to the limitations of the existing mechanical equipment, the original equipment cannot be used to complete the construction well. The reasons are: first, the construction energy level is not high enough due to the construction environment and equipment restrictions in the hole; second, the friction, impact and water in the hole Third, the construction is inconvenient. The rammer often produces a suction hammer in the hole, but the equipment cannot provide enough pulling force, which makes it difficult to lift...

AI Technical Summary

Problems solved by technology

However, due to the limitations of existing mechanical equipment, the original equipment cannot be used to complete the construction well. The reasons are: first, the construction energy level is not high enough due to the construction environment and equipment restrictions in the hole; second, the friction, impact and water in the hole Third, the construction is inconvenient, and the rammer often produces a suction hammer in the hole, but the equipment cannot provide enough pulling force, which makes it difficult to lift the hammer; fourth, it is difficult to lift the hammer during the construction process. The phenomenon of not falling to the bottom and locking the winch) will cause great damage to the machine; fifth, the original dynamic compaction machine has poor stability during work, resulting in large shaking, poor safety and mechanical life, and shaking leads to automatic measurement The system error is large, so that the construction lacks scientific data, and can only rely on experience, which affects the construction quality

[0003] At the same time, in the foundation construction process, the construction energy level is too small for the in-hole dynamic tamping process, and most of the rammers use pointed hammers, so the reinforcement effect is not good. A hard layer is formed, and the hard layer wraps the tip of the rammer and gets stuck in the hole, resulting in the ineffective reinforcement of the ramming filler below. A considerable part of the energy of the tip hammer acts on the soil on the hole wall, although it has laterally compacted the soil effect, but when drilling adjacent to the pile site, the soil will release a large part of the pressure, resulting in low construction efficiency. Smaller and poorly reinforced

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