Punching and static pressure pile driving method

Abstract

The invention relates to a jetting and drawing-out pile jacking-in method with the IPC Code of E02D7 / 26. According to the jetting and drawing-out pile jacking-in method, pile jacking-in and water jetting and soil drawing-out are scientifically combined, the squeezing effect of jacked pile construction is effectively reduced and appropriately maintained, the effectiveness and the reliability of consolidated subsoil of a jacked pile are guaranteed, the problem of difficult pile jacking on a hardened sand layer in jacked pile construction is solved, the negative effects such as outward soil diffusion, lateral soil displacement and the like caused by the squeezing effect on construction are overcome, and cracking of surrounding buildings and structures, surface doming, pulling breaking and pulling cracking of pipelines and the like caused by jacked pile construction are effectively avoided. A limiting switch is arranged on jetting and drawing-out equipment, so that automatic jetting and drawing-out are achieved. Bottom sealing equipment is simple and reliable. Thus, the whole scheme is easy and convenient to implement, safe and reliable and has great application and popularization value and advancement.

Description

Technical field: [0001] The invention relates to a construction method of general civil engineering buildings and traffic bridges, in particular to a pile driving method, belonging to the field of engineering infrastructure construction, and its IPC international patent classification number is E02D7 / 26. Background technique: [0002] With the development of economy and society, human beings have an increasing demand for high-rise buildings and long-span bridge construction. The foundation reinforcement technology has been the focus and focus of my country's civil engineering, traffic engineering and other fields in the past ten years. Static pressure pile reinforcement is a new underpinning technology for building foundation reinforcement. Due to the use of prefabricated piles in the static pressure pile method, the quality and integrity of the pile body are guaranteed, the process is simple, easy to operate, and the construction speed is fast. Vibration, no noise, low cons...

AI Technical Summary

Problems solved by technology

Another situation is that the reinforced foundation is mixed with a certain thickness of plate-bound sand layer, the pile sinking is difficult, and the pile ends cannot reach the design elevation, which greatly limits the application and promotion of the static pressure pile reinforced foundation

In order to eliminate the soil squeezing effect in the pile pressing process, the leading hole method or the middle digging method is often used to solve the above-mentioned common problems in actual construction, but the leading hole method or the middle digging method not only offsets the vibration-free and non-vibrating effect of the static pressure pile construction. Noise, simple process, fast construction speed, etc., especially the supporting equipment and process of the middle excavation method are foreign patents, and the cost of equipment introduction is very high. Solve it, increase the construction link and cost

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