Static pressure compacting method and deviation-preventing hammer

Abstract

The invention discloses a deviation-preventing hammer for realizing a static pressure compacting method. A hydraulic static pile driver is used for driving a hammer to compact the ground. The invention further discloses a deviation-preventing hammer capable of implementing the method. The hammer is fixed at the bottom of a steel pile which is driven by the hydraulic static pile driver. The hammer comprises a force application surface which is arranged at the bottom of the steel pile, and a stress surface is arranged below the force application surface and fixed with the bottom surface and the side face of a hammer barrel through a force transmitting rib. A lifting ring is arranged outside the force application surface. A protruding part is arranged on the side face of the lifting ring and ensures that the force application surface is clamped when the steel pile is lifted upwards. The lifting ring is connected with the force transmitting rib through a connecting ring. The static pressure compacting method and the deviation-preventing hammer have the advantages that efficiency is high, the hydraulic static pile driver weighing 800 tons is adopted, the pressure effect generated by the hydraulic static pile driver is higher than the compacting functional pressure effect generated by a compacting hammer weighing only tens of tons, and the rebounding effect of the ground is further eliminated, and therefore construction ground can be compacted at one time. Besides, the advantages of the static pressure compacting method are obvious when the method is used for the earth surface which is lower than three-grade soil and has high moisture content, noise is not generated, hydraulic pressure is adopted, so that noise of a dynamic compacting machine is not generated, safety is high, and the application range of the hydraulic static pile driver is greatly widened.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a static pressure rammer method and an anti-deflection hammer head for realizing the method. Background technique [0002] In the process of civil engineering construction, the first thing to be carried out is the foundation construction. Pile foundation is the most common form of foundation in building construction. Especially for building construction on the land formed by land reclamation, because the land density is low and the foundation is very soft, pile foundation construction must be carried out. The types of piles and their construction methods vary depending on the superstructure or load conditions, generally including engineering piles, that is, the entire prefabricated piles are pressed into the ground, suitable for building high-rise buildings on the ground, etc., while gravel piles and sand piles are used to Crushed stone or gravel is injected into the groun...

AI Technical Summary

Problems solved by technology

The common feature of this type of dynamic tamping machine is that tens of tons of rammers are used to impact the bottom surface, which is not only noisy, but also very dangerous, and there are huge potential safety hazards; site, even if it is rammed many times, it may not be able to meet the density requirements at a certain depth of the ground, and it is not possible to ram the ground with a soil quality below the third type and a high moisture content.

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