Design and implementation of Monoblock foundation level change

Kashan Kavir Steel Complex is one of the largest steel production complexes in the country with a production capacity of 900,000 tons of steel per year. The capacity of this complex, which is located near Aran Va Bidgol County, will reach one million and five hundred thousand tons of steel per year performing development plans in this complex.

One of the products of this complex is the alloy rebar. In the production process of these rebars, air needs to be blown into the production rebars by special fans to change the properties of the production rebars. Due to the level of the foundation which was located below the rebar rolling line, the required fans could not be installed. Therefore, by changing the level of the foundation, the space required to install the fans had to be provided.

Design and implementation of Monoblock foundation level change

PROJECT DETAILS

PROJECT NAME	Design and implementation of Monoblock foundation level change
EMPLOYER	Kashan Kavir Steel Complex
LOCATION	Kashan
SERVICES	concrete demolition, rebar planting, steel-jacket retrofitting, concrete-jacket retrofitting

PROJECT HIGHLIGHTS

Cutting supporting columns of rebar rolling line, without disturbing the operation of the rolling line

Challenges

As is mentioned in the introduction, it was not possible to place the blower fans below the rebar rolling line. Therefore, the foundation of the rolling line must be cut and its level transferred to 2 meters lower. On the other hand, due to the relatively long time predicted for the execution of the project (45 days), it was not possible to interrupt the production process of the line. In fact, at the same time as cutting the foundation and the columns supporting the line, the rolling line must continue to work, and meanwhile, the construction operation must be followed.

Solutions

In order to solve the mentioned challenges, a temporary structures were designed so that the rebar rolling line could continue to work smoothly during the project. The rolling line was stabilized in its place and the executive operation started under it by the implementation of this semi-prefabricated metal structure. In the executive operation, the foundation was completely cut and the end of the concrete column was destroyed. Finally, after excavation, the foundation was transferred to the desired level and the column was extended to the level of the foundation by the steel-jacket retrofitting method.

Results

By implementation of this plan, the employer was able to change the level of the foundation and install the required fans without interrupting the production line and incurring huge financial losses. Several years after the plan implementation, no settlement or cracks have been observed in the line and elements of the structure.

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By مدیر وبسایت|February 20th, 2022|Comments Off

Design and implementation of Monoblock foundation level change

Design and implementation of Monoblock foundation level change

PROJECT NAME

EMPLOYER

LOCATION

SERVICES

Challenges

Solutions

Results