Method for constructing circular hole of anchor bolt reserved by equipment foundation

Abstract

This invention relates to a method for constructing a circular hole of an anchor bolt reserved by equipment foundation, which comprises the following steps: step 1, assembling a mould; step 2, bracing the mould; step 3, pouring concrete; step 4, detaching the mould and leaving a circular hole; and step 5, cleaning the hole so as to obtain the circular hole of the anchor bolt reserved by the equipment foundation, wherein the mould for reserving the circular hole by the equipment foundation comprises a central shaft, a first opening and contracting device, a second opening and contracting device, four templates, four gap filling boards; the four templates are arc-shaped and are evenly distributed along a circumference; the gap filling boards are inserted between the templates; and a cylindrical space is enclosed by the four templates and the four gap filing boards. The method disclosed by this invention is characterized by simple operation and quick mould detachment; and the mould can be reused.

Description

technical field [0001] The invention relates to a construction method for reserving circular holes for anchor bolts in equipment foundations. Background technique [0002] In the construction of the equipment foundation, the anchor bolt holes of the equipment need to be reserved on the concrete foundation. The method of reservation generally adopts the method of supporting steel corrugated pipes, plastic pipes or supporting wooden formwork, etc., and removes them in time after the concrete solidifies. The steel corrugated pipe adopts a tool with a card slot at one end and a handle at the other end. The card slot is clamped to the steel corrugated pipe, peeled off layer by layer, and the removal effect is not ideal; the plastic pipe is baked at high temperature to make it soft, and then The method of pulling it out as a whole sometimes causes the plastic pipe to break off, which directly affects the strength of the secondary grouting of the anchor bolt holes. For deep holes,...

AI Technical Summary

Problems solved by technology

The steel corrugated pipe adopts a tool with a slot at one end and a handle at the other end. The slot is clamped to the steel bellows, and the steel corrugated pipe is peeled off layer by layer. The removal effect is not satisfactory; the plastic pipe is baked at high temperature to make it soft, and then Pulling out as a whole, the method sometimes causes the plastic pipe to break off, which directly affects the strength of the secondary grouting of the anchor bolt holes; the wooden formwork adopts a square pyramid-shaped wooden box structure with a large upper opening and a smaller lower opening, with small cross-section and deep depth. For deep holes, there will be various difficulties such as difficulty in force and limited space when dismantling

In order to improve the pull-out bearing capacity of bolts, a structure with the lower opening slightly larger than the upper opening is often used. Steel bellows and plastic pipes are standard materials, which cannot meet the requirements. requirements, and cannot be removed

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