An outsourcing permeable reinforced concrete tube gravel grouting pile and its construction method

Abstract

The invention relates to an outsourcing permeable reinforced concrete tube crushed grouting pile, which is composed of a prefabricated pipe pile, a prefabricated pile tip, a geotextile bag, a grouting pipe, solid crushed stone slurry, cement mortar around the pile, a drainage cushion and a cover plate The prefabricated pile point is set at the bottom of the prefabricated pipe pile, and the top surface of the pile point is provided with a prefabricated pipe pile limit protrusion and a grouting pipe limit groove; the center of the prefabricated pipe pile is provided with a grouting pipe, and The flower holes are evenly arranged, the grouting pipe is covered with crushed stone slurry, and the horizontal permeable holes are evenly reserved on the prefabricated pipe pile; the top of the prefabricated pipe pile body is provided with a cover plate; There is cement mortar around the pile between the pipe pile and the geotextile bag. The invention can effectively solve the silting problem of the outer wall of the prefabricated pipe pile, fully utilize the drainage performance of the gravel to accelerate the drainage and consolidation of the soil, and greatly improve the bearing performance of the common gravel pile. The invention also discloses a construction method of the composite pile.

Description

Technical field [0001] The invention relates to an outsourcing water-permeable reinforced concrete pipe crushed stone grouting pile, which belongs to the field of foundation treatment, which can improve the bearing capacity of the foundation, give full play to the drainage performance of the crushed stone, accelerate the consolidation of soil, and is suitable for soft soil foundation treatment projects . Background technique [0002] Soft soil is widely distributed in our country, and there are areas with deep soft soil covering in the middle and lower reaches of the coast, rivers and lakes. Soft soil has the characteristics of large water content, low shear strength and poor overload capacity. If it is not handled or handled improperly, it will cause foundation instability, which will not only cause engineering problems such as road structure damage and bridge head jumping, but also affect the comfort of driving, cause passing vehicles to slow down greatly, and even cause drivi...

AI Technical Summary

Problems solved by technology

However, there are also some deficiencies in the pile body. The geogrid is often not strong enough, and the geogrid is easily crushed during the construction process. The geogrid cannot solve the problem of hole collapse and the bearing capacity of the pile is insufficient.

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