Construction method of mass concrete of high-rise building foundations

A technology for large-volume concrete and high-rise buildings, which is applied in basic structure engineering, construction, etc., to achieve the effects of ensuring shrinkage closure, low labor intensity, and short construction period

Inactive Publication Date: 2015-01-07
沈建东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-rise building foundation mass concrete construction method, to solve the difficult problems in the mass concrete cons

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0017] Construction method of high-rise building foundation mass concrete, including operation steps:

[0018] 1) Preparation before pouring

[0019] a. Plank, connection, and pump pipes must be firmly erected. The conveying pipeline should be straight, the turning should be slow, the joints should be tight, and a certain length of horizontal pipe should be installed at the concrete outlet. In order to prevent the operation from stepping on the steel bar and the steel bar displacement at will, install the foundation steel bar Laying scaffolding is used as a passage for construction personnel during operation, and the debris in the formwork and the oil on the steel bars should be cleaned up;

[0020] b Control the elevation: copy the elevation control line on the wall and column reinforcement in advance, and control the elevation of the sump and other key points, so as to copy at any time and control the accuracy of the elevation. When the concrete is poured, the construction surveyo...

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Abstract

The invention discloses a construction method of mass concrete of high-rise building foundations. According to the construction method, continuous construction is adopted for concrete construction, concrete is subject to segmental and layered casting and mechanical vibrating, and the temperature and the casting time are strictly controlled. The construction method is simple in technique, high in site construction efficiency, reliable in quality, short in construction period and low in labor intensity, the quality after construction reaches the design demands, and the thickness of casting layers is strictly controlled. Vibrators are arranged at multiple casting points to ensure density of the concrete. The opening temperature and the molding temperature of the concrete are strictly controlled so that shrinkage and closing of the concrete are effectively ensured. The concrete is vibrated in a fast inserting and slow stirring mode during casting so that holes caused by mixing of air during concrete casting are effectively prevented.

Description

technical field [0001] The invention relates to a concrete construction method, in particular to a high-rise building foundation mass concrete construction method. Background technique [0002] At present, with the rapid development of the scale of economic construction, the modern construction industry is expanding towards high, large, deep and complex structures, which often involve large-volume concrete, such as high-rise buildings or large-scale equipment foundations, ultra-thick and super-large caps for pile foundations , hydraulic structures, etc. Its main feature is that it is large in size and has a large heat of cement hydration, which can easily cause concrete to crack due to the temperature difference between inside and outside exceeding 25°C, affecting the safe use of the structure and prolonging the construction period. At present, the construction treatment methods in the prior art are not very ideal. The construction of modern high-rise buildings develops rap...

Claims

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Application Information

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IPC IPC(8): E02D15/02
CPCE02D15/02
Inventor 沈建东
Owner 沈建东
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