Formwork and construction methods for in-situ construction of large-diameter super-long pile reinforcement cages on steep slopes in mountainous areas

Abstract

The invention relates to an in-situ construction shaping formwork for a large-diameter ultra-long pile reinforcement cage of an abrupt slope of a mountainous area and a construction method. The in-situ construction shaping formwork for the large-diameter ultra-long pile reinforcement cage of the abrupt slope of the mountainous area comprises an embedded part system, a shaping formwork main body, a reinforcement cage hoisting system and a reinforcement cage shelving system; the embedded part system comprises hydraulic barrows, concrete prefabricated blocks and embedded screws; the shaping formwork main body comprises shaping formwork bases, cat ladders, cotter holes, operating platforms, steel fixers and lug plates; the reinforcement cage hoisting system comprises cross bars, electric hoists and hanging loops; the reinforcement cage shelving system is arranged at orifices of the cotter holes and comprises reinforcement cage shelving plates, retractable plates and hanging loops; the hydraulic barrows are arranged on the periphery of a pile; and the whole formwork is shaped by side pulling through anchor cables so that a reinforcement cage is supported in an assisted manner. The in-situ construction shaping formwork for the large-diameter ultra-long pile reinforcement cage of the abrupt slope of the mountainous area has the beneficial effects that a shaping formwork system is convenient to assemble and disassemble, is connected with the ground, is stable in structure and convenient to construct, and has good operability.

Description

technical field [0001] The invention relates to a mold base for in-situ construction of large-diameter super-long pile reinforcement cages on steep slopes in mountainous areas, which is suitable for manufacturing, installing and constructing reinforcement cages for pile foundation projects in complex terrain in mountainous areas, and is especially suitable for the construction of reinforcement cages for large-scale pile foundations on steep slopes in mountainous areas. Background technique [0002] With the further in-depth implementation and advancement of the western development, the construction of transportation infrastructure has ushered in a new round of climax. There are more and more highway and bridge projects involving complex terrain in mountainous areas. Bridges and highway projects in mountainous areas are affected by terrain, geology, water level The influence of transportation, transportation, etc. is particularly prominent, especially when it involves the cons...

AI Technical Summary

Problems solved by technology

[0002] With the further in-depth implementation and advancement of the western development, the construction of transportation infrastructure has ushered in a new round of climax. There are more and more highway and bridge projects involving complex terrain in mountainous areas. Bridges and highway projects in mountainous areas are affected by terrain, geology, water level The influence of transportation, traffic, etc. is particularly prominent, especially when it comes to the construction of steeper slopes. Not only is the operation inconvenient and the construction is difficult, but also the traffic is inconvenient, the transportation of materials is difficult, and the difficulty of large machinery often leads to low construction efficiency.

[0003] The reinforcement cage for large-diameter and super-long bored piles has structural characteristics such as multiple segments, self-heavy weight, many joints, and easy deformation. The need for long bored pile construction

The current construction method for large-diameter and super-long pile reinforcement cages is mainly to bind the reinforcement cages in sections and then hoist them to the construction area of ​​the site for splicing and then lower them down step by step. The topographical restrictions are large, requiring huge manpower and material resources; there are also considerations for segmental construction of the reinforcement cage directly at the opening, but there is no specific shaped formwork and stable opening support system, and there are great safety hazards in the construction

[0004] To sum up, although the existing large-diameter super-long pile reinforcement cage construction method can achieve a relatively ideal foundation treatment effect under suitable engineering environmental conditions, there are still room for improvement and relatively high environmental requirements

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