Inclined pile construction device and inclined pile foundation pit supporting construction method

Abstract

The invention relates to an inclined pile construction device and a construction method, and belongs to the field of foundation pit support projects. The inclined pile construction device comprises a pile sinking device and a pile pulling device. The pile sinking device comprises a guard pile connector (5), a mechanical base (4), a sleeve clamp (2), a power device (11) and an inclined pile angle adjusting device (3). The pile pulling device comprises the sleeve clamp (2), the power device (11) and a counter-force base (7). The pile sinking device provides pile sinking counterforce through ground and a guard pile constructed firstly, and the pile pulling device provides pile pulling counterforce through a foundation base board. The invention further provides an insertion and extraction construction step and method of an inclined pile (1). According to the inclined pile construction device and the construction method, the problem of insertion and extraction construction of the inclined pile (1) in the foundation fit support projects is well solved, the construction efficiency is high, the manufacturing cost is low, quality is reliable, and application of prestress can be finished while construction is conducted.

Description

technical field [0001] The invention relates to the field of foundation pit protection engineering in the field of geotechnical engineering. Background technique [0002] Slanted piles have many advantages as the support for foundation pit enclosure. Firstly, compared with horizontal support, slanted pile support does not require a large number of column piles, and the amount of support is small. The excavation of foundation pit is convenient and fast. The earth pressure of the structure is transmitted to the soil at the bottom of the pit, which is beneficial to the anti-uplift of the bottom of the pit. Compared with the diagonal brace support of the foundation pit enclosure, the inclined pile support has the advantage of not needing to construct the center island foundation floor first, and not requiring secondary excavation, so , The construction speed of the foundation pit project is fast and the cost is low. However, in the foundation pit protection project, the excavat...

AI Technical Summary

Problems solved by technology

However, in the foundation pit protection project, the excavation surface of the foundation pit is generally very close to the red line of the land, and the construction operation area is small. In addition, the construction of inclined piles generally needs to provide a large horizontal reaction force. If drilling is used for construction, it is easy to collapse. hole

At present, inclined piles can be constructed in the form of inserting steel pipes into oblique construction mixing piles or in the form of oblique drilling and grouting, but the pile formation speed is slow, the cost is high, and it is difficult to recycle and reuse, resulting in a large waste of materials , the construction cost is still high and the construction speed is slow

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