Formwork system suitable for large-diameter manual hole digging annular foundation pile and construction method

Abstract

The invention discloses a formwork system suitable for a large-diameter manual hole digging annular foundation pile and a construction method. The formwork system comprises a reference column, connecting pieces, steel pins, steel formwork horizontal supports, a manual hole digging pile guard arm, a steel formwork fixing rod, an annular steel formwork, a steel formwork longitudinal connecting hole,a steel formwork horizontal connecting hole, steel formwork horizontal support length adjusting devices, annular foundation pile concrete, an annular foundation pile formwork system, a reference column connector, an annular foundation pile top and an annular foundation pile bottom. The formwork system has the beneficial effects that good support can be provided for the annular steel formwork, sothat the overall stability of the formwork system can be effectively improved, the problem that the annular steel formwork is not easy to install and disassemble is effectively solved while the tightconnection of the annular steel formwork is guaranteed, no connecting device is arranged between the annular foundation pile formwork system and the manual hole digging pile guard arm for connection,it is ensured that a foundation pile reinforcement cage can be integrally hoisted, and the construction progress is accelerated.

Description

technical field [0001] The invention relates to a formwork for ring-shaped foundation piles, in particular to a formwork system and a construction method suitable for large-diameter artificially dug holes for ring-type foundation piles, and belongs to the technical field of civil engineering construction. Background technique [0002] With the continuous construction of high-rise buildings, super high-rise buildings and large bridges, the superstructure has higher and higher requirements for the bearing capacity of the foundation. Ordinary medium and short piles can no longer meet their bearing capacity requirements, and large-diameter cast-in-situ piles are widely used in such large-scale foundation projects because of their good bearing performance. It is designed as a hollow pile. Compared with the solid pile, it can save about 50% of the concrete under the condition of unchanged mechanical properties, and at the same time solve the quality problem in the process of pouri...

AI Technical Summary

Problems solved by technology

Ordinary medium and short piles can no longer meet their bearing capacity requirements, and large-diameter cast-in-situ piles are widely used in such large-scale foundation projects because of their good bearing performance. It is designed as a hollow pile. Compared with the solid pile, it can save about 50% of the concrete under the condition of unchanged mechanical properties, and at the same time solve the quality problem in the process of pouring large-volume concrete for large-diameter piles. However, due to the lack of supporting use The formwork system and construction method, the application of large-diameter manual excavation ring-shaped piles is limited

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