Inclined pile construction equipment, inclined pile construction method and inclined pile deep foundation pit support structure

Abstract

The invention relates to inclined pile construction equipment and a construction method and a formed inclined pile deep foundation pit support structure in the field of foundation pit support engineering. The inclined pile construction equipment comprises the parts of a surrounding pile connector, an inclined pile connector 2, a power device 11 and the like. The inclined pile construction method mainly uses surrounding piles 6 for providing construction reactive force to realize insertion and pulling of inclined piles; a method for constructing deep-buried inclined piles in deep positions of steel pipe piles after excavation of soil in large-diameter steel pipe piles is provided; a construction method for deeply burying the inclined piles after excavation of soil in middle zones of row pile supports is provided; a truss fixed end deep foundation pit inclined pile support structure is formed; the insertion construction difficulty of the inclined piles (1) in the foundation pit surrounding engineering is preferably solved; high construction efficiency, low production cost and reliable quality are achieved; and application of prestress is finished during constructing.

Description

technical field [0001] The invention relates to the field of foundation pit protection engineering in the field of civil 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 no need to construct the underground structure of the central island first, and does not require 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 excavation surface ...

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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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