Steel sheet pile construction refers to the construction process of using steel sheet piles to achieve the role of foundation pit support in the construction process.

Steel sheet pile construction is used in permanent buildings such as docks, cargo yards, bank revetments, rocks, fixing, breakwaters, diversion dikes, buoys, docks, sluices, diversion pipes, foundations, impermeable walls, retaining walls, and excavated retaining walls. , It is often used in the process of temporary structures such as soil and sand collapse prevention boards, temporary revetments, cofferdam projects, closures, and temporary center islands. Domestic construction is done by professional construction companies.

Construction requirements

(1) The setting position of the steel sheet pile should meet the design requirements, which is convenient for the earthwork construction of the trench foundation, that is, there is room for formwork support and formwork removal outside the most prominent edge of the foundation.

(2) The shape of the supporting plane layout of the grooved steel sheet piles in the foundation pit should be as straight and tidy as possible, avoiding irregular corners, so as to facilitate the utilization and support setting of standard steel sheet piles. The surrounding dimensions should conform to the board modulus as much as possible.

(3) During the entire foundation construction period, during the construction operations such as excavation, lifting, tying steel bars, and pouring concrete, it is strictly forbidden to collide with the supports, to dismantle the supports arbitrarily, to prohibit arbitrary cutting and electric welding on the supports, and not to touch the supports on the supports. Set aside heavy objects.

(4) During the construction process, detect the displacement and settlement of the pipelines that need monitoring determined in the pipeline coordination meeting.

(5) Strictly control the position of the steel sheet piles to avoid being excessively close to the underground structure and causing the construction work area to be too small.

(6) Excavation must be excavated in layers to avoid excessive earth pressure on one-sided steel sheet piles.

(7) If the steel sheet pile is deformed during the excavation process, the earthwork excavation should be stopped. Immediately backfill the earthwork until the steel sheet piles do not move, excavate the earthwork outside the steel sheet piles to unload, pull out the steel sheet piles, correct the steel sheet piles and drive them in again, redesign and calculate, and add internal supports.

(8) The purlins are made of I-shaped steel or double-sided channel steel, and the purlins on each side must be tightly welded and fixed. The purlins must stand on the corbels and be fully welded to the steel sheet piles. It is strictly forbidden to weld directly on the steel sheet piles without corbels. The vertical and horizontal purlins must be spliced at 45°.

(9) For steel sheet piles with high drawing resistance, the method of intermittent vibration is adopted, each vibration is 15 minutes, and the continuous operation of the vibratory hammer does not exceed 1.5 hours.