Concrete filled steel tube composite pile foundation and construction method
A technology of steel pipe concrete and construction methods, which can be applied to foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of poor horizontal bearing capacity and ductility, difficult construction, high cost, etc., and achieve high bearing capacity, convenient construction, and structural Good shock resistance effect
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[0032] See figure 1 , The present invention provides a steel tube concrete mixed pile foundation, which includes a steel tube concrete structure pile and a reinforced concrete structure pile; the steel tube concrete structure pile and the reinforced concrete structure pile are sequentially connected from top to bottom to form an integral pile foundation; The concrete-filled steel tube structure pile is placed above the zero point of the bending moment of the integral pile foundation; the reinforced concrete structure pile is placed below the zero point of the bending moment of the integral pile foundation; the grade of the concrete filled in the reinforced concrete structure pile is lower than the concrete filled in the concrete-filled steel tube structure pile The label.
[0033] among them:
[0034] The concrete-filled steel pipe structural pile includes equal-diameter steel pipe 1, reduced-diameter steel pipe 2, and increased-diameter steel pipe 3; equal-diameter steel pipe 1 is...
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