Precast U-shaped plate pile with mixed structure of steel and concrete

Abstract

The invention discloses a precast U-shaped plate pile with a mixed structure of steel and concrete. The U-shaped plate pile comprises reinforced concrete and a steel structure which is combined with the reinforced concrete; the cross section main body of a plate pile is in a U shape; a stressed steel bar of a pile body is a prestressed steel bar or a common steel bar; a hooping and a waist steel bar are arranged on the pile body; the U-shaped plate pile is characterized in that a T-shaped through slot is arranged in one side of a lower flange of the plate pile; the direction of the T-shaped through slot is along the length of the pile body; the other side of the lower flange is combined with an inverted H-shaped steel bar; half of the inverted H-shaped steel bar is left outside the pile body structure, and the other half of the inverted H-shaped steel bar is embedded in the internal part of the pile body structure. When sunken construction of plate pile is conducted, the adjacent plate piles are firstly assembled integrally through the inverted H-shaped steel bar and the T-shaped through slot, and then the piles are sunken by machines. The U-shaped precast plate pile provided by the invention has the characteristics of convenient in construction, reliable in connection, good in water sealing effect and saves construction period and the like. If the plate pile is used as a temporary structure, after the construction is completed, the inverted H-shaped steel bar can be recycled and reused.

Description

technical field [0001] The invention relates to a soil retaining, slope protection, water stop and enclosure structure in the field of civil engineering, in particular to a U-shaped sheet pile of a prefabricated steel-concrete mixed structure. Background technique [0002] In the field of civil engineering, due to the various functional needs of the society, the construction of civil engineering such as basements, slopes, subways, and tunnels requires temporary or permanent earth-retaining and water-stop structures during the construction process. Considering that grading excavation is the most economical and economical solution, but it is often limited by the space of the construction site, it is impossible to put it to the end, and some even have no grading conditions at all. The foundation pit or enclosure area is close to the red line, which requires a vertical retaining slope protection structure. [0003] For deep foundation pit engineering, underground diaphragm wall...

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Problems solved by technology

[0003] For deep foundation pit engineering, underground diaphragm wall structure is commonly used, but the cost is expensive and the construction process is relatively complicated, which is not suitable for shallower soil retaining functions.

[0004] Usually in the field of civil engineering, the structures of soil retaining, water stop and slope protection are mainly cast-in-place construction. The cast-in-place structure has the characteristics of good adaptability and control, but the disadvantages are also obvious, such as requiring a large construction site and a long maintenance time, etc.

[0005] Usually prefabricated reinforced concrete sheet piles are often prone to cracks due to the vibration of the hammer during the driving process, which affects both the appearance and the use

[0006] Prefabricated prestressed reinforced concrete sheet piles can overcome the concrete cracks caused by the pulling force during the hammering process of the pile sinking, but due to the error in the sinking process, there will inevitably be gaps between the piles, which greatly affects the water stop of the sheet piles Effect

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