Self-compacting concrete pouring construction method for penetration pipe

Abstract

The invention provides a self-compacting concrete pouring construction method for a penetration pipe. The self-compacting concrete pouring construction method for the penetration pipe comprises the following steps of S1, welding multiple large-diameter steel pipes connected sequentially, arranging in a tunnel liner grotto, and adopting end mold plates for plugging the steel pipes at two ends; S2,stretching pump pipes connected with pump trucks into the steel pipes; S3, forming a concrete pouring hole in the top part of each steel pipe, wherein connecting pipes arranged in the concrete pouringholes are connected with the pump pipes through flexible pipes; S4, self-adopting the two pump trucks for pouring and molding from the middle part to two ends, and pouring in two layers, wherein thefirst-layer concrete pouring is characterized by pouring to a 180-degree range of a pipe center line from bottom to top, and the second-layer concrete pouring is characterized by sequentially pouringsegmentally from the steel pipe in the middle to the steel pipes at two ends; and S5, by utilizing high fluidity and a self-compacting performance of a self-compacting concrete, flowing by depending on the self weight of the self-compacting concrete, and obtaining a compacted concrete without the need for vibration. According to the self-compacting concrete pouring construction method for the penetration pipe provided by the invention, the installation progress of the steel pipes is ensured, the construction period is shortened, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a construction method of self-compacting concrete, in particular to a construction method of self-compacting concrete pouring through holes. Background technique [0002] Technical background: Self-compacting concrete originated in 1988 from Professor Okamura Fu of Tokyo University in Japan. The driving force for development was "the reduction of skilled workers in Japan will inevitably have a negative impact on the durability of concrete structures." He said in a lecture at the University of Texas in 1996 Self-compacting concrete. Compared with traditional concrete, the amount of self-compacting concrete coarse aggregate is less, the amount of powder is increased, and the ratio of water to powder is much smaller than the water-cement ratio of conventional concrete. The fluidity can be greatly improved without increasing the water consumption per unit volume. It has high fluidity, gap passability and segregation resistance, a...

AI Technical Summary

Problems solved by technology

[0009] The invention provides a construction method for self-compacting concrete pouring through pipes, which solves the problem of high labor, material and equipment costs due to the need to install and dismantle pump pipes during multiple pours, and solves the problem of long time-consuming and high cost of the project. problem, the technical solution is as follows:

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