Large-volume concrete pouring method for nuclear island raft foundation

A large-volume concrete and concrete technology, applied in the direction of construction, infrastructure engineering, etc., can solve problems such as low efficiency, long construction period, and unsatisfactory, and achieve the effect of improving work efficiency and shortening the construction period

Inactive Publication Date: 2012-02-29
STATE NUCLEAR POWER ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is inefficient and requires a long construction period, which can no longer meet the needs of the rapid development of nuclear power plants.

Method used

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  • Large-volume concrete pouring method for nuclear island raft foundation
  • Large-volume concrete pouring method for nuclear island raft foundation
  • Large-volume concrete pouring method for nuclear island raft foundation

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Embodiment Construction

[0018] In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with accompanying drawings.

[0019] A kind of nuclear island raft foundation mass concrete pouring method described in this embodiment, its steps are:

[0020] Step 1. After setting up the formwork, if Figure 1 to Figure 3 As shown, in the horizontal direction, the nuclear island raft foundation area 1 to be poured is divided into three sub-areas, and then, as Figure 4 As shown, in the longitudinal direction, each sub-region is divided into four pouring layers, and the layer thickness is determined according to the length of the vibrator and the supply of concrete. In this embodiment, the thickness of each layer is about 18 inches. Then in the horizontal direction, divide each pouring layer into multiple pouring sections on average;

[0021] Step 2. When pouring, the No. 1 automobile pump, the No. 2 automobile pump, the No. 3 automobile pump and a distrib...

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Abstract

The invention provides a large-volume concrete pouring method for a nuclear island raft foundation. The method comprises the following steps of: after templates are completely erected, dividing a nuclear island raft foundation area to be poured into at least two subareas in the transverse direction; dividing each subarea into at least three pouring layers in the longitudinal direction; averagely dividing each pouring layer into at least five pouring sections in the transverse direction; and crossly pouring the pouring sections positioned on different pouring layers till all the subareas are completely poured. By the large-volume concrete pouring method for the nuclear island raft foundation, large-volume concrete can be poured at one side, the construction period is greatly shortened, the work efficiency is improved, and the quick development requirement of a nuclear power plant is met.

Description

technical field [0001] The invention relates to a method for pouring large-volume concrete on the raft foundation of a nuclear island. Background technique [0002] At present, most of the concrete pouring for nuclear island raft foundation is carried out in batches. That is, the area to be poured is first divided into several sub-areas, or after being divided into several sections, and poured one by one small area, or poured section by section. After pouring a small area or a section, it is usually necessary to wait for the concrete in the small area or section to dry before pouring the next small area and the next section, and the pouring of mass concrete is completed after the total amount is accumulated. This method is inefficient and requires a long construction period, which cannot meet the needs of the current rapid development of nuclear power plants. Contents of the invention [0003] The purpose of the present invention is to provide a large-volume concrete pou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02E02D27/32
Inventor 吴健徐屹
Owner STATE NUCLEAR POWER ENG
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