Anchor rod for underground engineering anti-floating system construction and construction method

Abstract

The invention relates to an anchor rod for underground engineering anti-floating system construction and a construction method. The anchor rod comprises an anchor rod framework, wherein an anchor head with a backing plate is fixedly mounted at the top of the anchor rod framework; the anchor rod framework comprises a guide pipe; a grout pipe I is arranged inside the guide pipe; and a grout pipe II is fixedly mounted at an external part of the guide pipe. The anchor rod has the benefits as follows: a traditional support type anchor rod construction machine is adopted, so that the defects that the construction difficulty is high and the efficiency is low, the construction period is long, the input cost is high, both excavation and structure construction processes cannot be effectively joined due to slow progress of a traditional process when an anti-floating pile is constructed in high-strength hard rock are overcome; and the fast progress and good quality are realized, and greater economic benefits are brought to enterprises.

Description

Technical field [0001] The invention relates to the technical field of building construction, in particular to an anchor rod for the construction of an anti-floating system of an underground project and a construction method. Background technique [0002] In recent years, urban underground engineering has developed rapidly. The underground projects in the southern coastal areas are mostly on weakly weathered rocks. In addition to the offshore water-rich strata, the structural anti-floatation requirements are relatively high. Unable to overcome the buoyancy, it will cause huge losses to the project, structural cracks, and reduced service life. Floating often uses the design of uplift piles, and the construction of uplift piles on hard rock is a test of traditional construction techniques. [0003] The traditional design and construction methods of uplift piles are: 1) Use machinery to carry out construction in the initial stage of construction of the retaining structure. This metho...

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Problems solved by technology

[0006] The present invention proposes a kind of anchor rod and construction method for underground engineering anti-floating system construction, adopts traditional support type anchor rod construction machinery, solves the difficulty of construction and low efficiency of traditional technology in the construction of anti-floating piles under high-strength hard rock , Long construction period, high input cost, and slow progress lead to the shortcomings that the two processes of excavation and structural construction cannot be effectively connected

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