Digitalized construction site concrete prediction type anti-cracking method

A construction site, concrete technology, applied in the digital construction site concrete predictive anti-cracking field, which can solve the problems of adjusting concrete anti-cracking measures and not being able to grasp the changes of concrete internal temperature and stress in real time

Active Publication Date: 2019-10-25
HOHAI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Existing concrete anti-cracking measures include water cooling, covering heat preservation, and watering curing, etc., but such measures cannot realize real-time changes in the internal temperat

Method used

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  • Digitalized construction site concrete prediction type anti-cracking method
  • Digitalized construction site concrete prediction type anti-cracking method
  • Digitalized construction site concrete prediction type anti-cracking method

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Embodiment Construction

[0074] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0075] See figure 1 , which shows the flow chart of the digitalized construction site concrete anti-cracking method according to the present invention; the flow chart of this embodiment is as follows figure 2 shown. Arrange temperature sensors and stress sensors in sensitive parts inside the ship lock, and install data acquisition equipment in parts that do not affect the construction. The sensor layout positions are as follows: Figure 3-5 shown.

[0076] The temperature sensor of the ship lock adopts the DW-1 differential resistance thermometer, which is arranged in the conventional temperature monitoring position of the concrete engineering, including the upper surface, middle and lower surface of the middle bottom plate center of the upper lock head on the left bank; the side bottom plate of the upper lock head on the l...

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Abstract

The invention discloses a digitalized construction site concrete prediction type anti-cracking method which comprises the following steps: firstly, arranging a temperature and stress sensor at a concrete sensitive position, then endowing concrete with a thermal parameter initial value, and then feeding back and analyzing a concrete thermodynamic parameter based on a particle swarm algorithm; calculating internal temperature predicted value and a stress predicted value in future 4-7 days according to a control equation of a three-dimensional unstable temperature field and a control equation ofa creep stress field; and finally, taking anti-cracking measures on the mass concrete according to the solved stress prediction value. According to the method provided by the invention, the calculation result is more accurate, and the concrete anti-cracking measure is adjusted according to the predicted future concrete temperature and stress development trend, so that the anti-cracking effect is the best.

Description

technical field [0001] The invention relates to a concrete anti-cracking method, in particular to a digitalized construction site concrete predictive anti-cracking method. Background technique [0002] Hydraulic structures are mostly large-volume concrete structures, and the common quality problem that often occurs during construction is concrete cracks. The crack problem not only affects the durability and service life of the project, but also seriously threatens the safe and stable operation of the concrete structure. [0003] The hydration reaction in the early concrete will generate a lot of heat, which will increase the temperature of the concrete structure. During construction, for general concrete structures, especially concrete structures with relatively low ambient temperature, the internal temperature is generally high and the temperature of the concrete near the surface is low. The surface exhibits "relative shrinkage" relative to the interior, and at this time,...

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Application Information

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IPC IPC(8): G06F17/50G06N3/00G01N25/20G01N25/18G01N25/48G01K7/16G01B7/16
CPCG06N3/006G01N25/20G01N25/18G01N25/48G01N25/482G01K7/16G01N25/4846G01B7/18G06F30/23G06F2119/06
Inventor 苏超白嘉伟胡绍沛张恒
Owner HOHAI UNIV
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