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Construction method for large-sized blast furnace foundation

A construction method and basic technology, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of increasing construction difficulty, affecting the normal use of blast furnaces, and affecting the installation of blast furnace bodies, so as to reduce the time required for support installation, avoid mold expansion, and use steel volume saving effect

Active Publication Date: 2012-07-18
CHINA 19TH METALLURGICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The foundation of a large blast furnace has an extremely important position in the entire blast furnace construction process. It bears the full load of the blast furnace, which inevitably leads to a complex structure of the blast furnace foundation (the surface area is large and most of them are inclined formwork, the steel bars are dense and the large space is suspended and not closed. cage), which greatly increases the difficulty of construction
The quality of the blast furnace foundation construction directly affects the installation of the blast furnace itself, and even affects the normal use of the blast furnace

Method used

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  • Construction method for large-sized blast furnace foundation
  • Construction method for large-sized blast furnace foundation
  • Construction method for large-sized blast furnace foundation

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Take the following large-scale blast furnace foundation as an example, its volume is 2500m 3 , the foundation is 33.5m long, 24m wide, and 3.9m high. It starts from the bottom 2m and retracts toward the middle, forming a prism.

[0043] 1. Binding steel bars 7 for the foundation floor of the blast furnace;

[0044] 2. Start to install the steel support frame 5. The installation sequence is: welded steel column 1 → weld top horizontal bar 2 at the top of column 1 and reinforce horizontal bar 4 in the middle of column 1 → weld inclined surface bar 3 at the inclined surface of the parallel prism → weld oblique support firmly. The column 1 of the section steel supporting frame 5 adopts angle steel ∠75×6, with a distance of about 4m. The root is welded to the steel bar 7 of the bottom plate, and the top is 100mm lower than the surface concrete; There are two vertical and horizontal horizontal bars in total at the top horizontal bar 2; the reinforced horizontal bar 4 adopts...

Embodiment 2

[0050] Taking a certain blast furnace as an example, the comparison of materials used in the method of the present invention and the existing method is shown in the following table:

[0051]

[0052] It can be seen from the above table that the amount of non-reusable steel buried in the concrete by the construction method provided by the present invention is less than that of the existing method, and the total amount of steel is greatly saved, thereby reducing the time for supporting installation and reducing the construction difficulty. Construction frees up time and space.

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Abstract

The invention discloses a construction method for a building foundation, and particularly relates to a construction method for a large-sized blast furnace foundation, which reduces utilization quantity of steel. The construction method for the large-sized blast furnace foundation comprises following steps: A, binding reinforcing steel bars of a bottom plate of the foundation; B, mounting upright columns on the basis of the reinforcing steel bars of the bottom plate, and leading the heights of the upright columns to be smaller than surface concrete; and mounting top horizontal rods and inclined surface rods at the tops of the upright columns, forming a supporting framework with the shape matching with that of the large-sized blast furnace foundation after the horizontal rods, the inclined surface rods and the upright columns are mounted, and leading the height of the supporting framework not to be larger than the surface concrete; C, binding reinforcing steel bars on the supporting framework; D, mounting formworks surrounding the outer surface of the supporting framework; and E; pouring to finish the large-sized blast furnace foundation. The upright columns, the top horizontal rods and the inclined surface rods are utilized to form the supporting framework, the reinforcing steel bars are then bound on the supporting framework, an additional platform is omitted, the reinforcing steel bars are directly bound on the supporting framework, and accordingly the total steel utilization quantity is greatly reduced.

Description

technical field [0001] The invention relates to a construction method of a building foundation, in particular to a construction method of a large-scale blast furnace foundation. Background technique [0002] The foundation of a large blast furnace has an extremely important position in the entire blast furnace construction process. It bears the full load of the blast furnace, which inevitably leads to a complex structure of the blast furnace foundation (the surface area is large and most of them are inclined formwork, the steel bars are dense and the large space is suspended and not closed. cage), which greatly increases the difficulty of construction. The construction quality of the blast furnace foundation directly affects the installation of the blast furnace itself, and even affects the normal use of the blast furnace. [0003] In the past, the foundation construction of large-scale blast furnaces mainly adopted the following methods: 1. Lay the bottom steel bars first,...

Claims

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Application Information

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IPC IPC(8): E02D27/32E02D27/44E02D15/02
Inventor 李铁军
Owner CHINA 19TH METALLURGICAL CORP
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