Concrete construction device and construction method

Abstract

The invention relates to a concrete construction device, which includes an outer pipe, an inner rammer, a reinforcement cage, a soil expander, a reinforcement expander and an expanded steel ball, and also includes a concrete construction method, the steps of which are: 1), pre-excavation piles 2), the outer pipe sinks into the pile hole; 3), the inner rammer free falls to expand the space at the bottom of the outer pipe; 4), put the expander into the outer pipe to expand the soil; 5), take out the expander, pass The internal rammer falls freely to expand the bottom space; 6), repeat steps 4 and 5 to expand the head space; 7), take out the soil expander and internal rammer, and put them into the reinforcement cage; 8), put the expander Enter the outer pipe to expand the reinforcement; 9), pour a layer of cement in the expansion head space; 10), put the expanded steel ball into the expansion head space, and pull out the binding rope; 11), adjust the expanded expanded steel ball with the adjustment lever; 12) 1. Pour concrete into the outer pipe to the top of the pile; 13) Lift the outer pipe and vibrate the dense concrete. The invention has the effect that the constructed pile has stronger pull-out resistance.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a concrete construction device and a construction method. Background technique [0002] Concrete construction is carried out in accordance with the requirements of the design drawings, making and binding steel bars, placing and fixing formwork, using raw materials that meet quality requirements, mixing, transporting, pouring, and curing according to the specified ratio, and at the same time carrying out the whole process of each link Quality control and inspection. Concrete is one of the most important civil engineering materials in contemporary times, and its application is extensive, such as concrete beams, concrete piles, concrete walls and so on. [0003] Reinforced concrete pile is a pile made of concrete with steel bar as the skeleton. It has been widely used in the foundation engineering of hydraulic construction, industrial construction, civil construction and ...

AI Technical Summary

Problems solved by technology

[0005] However, through the extrusion and expansion of dry hard concrete, the main reinforcement at the bottom of the reinforcement cage will be spread out. Different reinforcements will have different extrusion and expansion forces, resulting in different degrees of bending of the reinforcement, so that the reinforcement in the expansion head The skeleton is not evenly distributed. At the same time, only the outer layer of the enlarged head is equipped with steel bars and the interior is empty. There is no good skeleton to play a fixed role. The strength of the enlarged head is not high enough, and the pull-out capacity of the concrete pile is not strong enough.

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