Spray maintenance method and system for wall structure

Abstract

The invention provides a method and a system for spraying and maintaining a wall structure. The method includes steps of 1), spraying the wall structure by water straightaway after the wall structure is constructed by means of pouring, setting measuring points A, B and C and regularly measuring the temperatures of the measuring points A, B and C to acquire temperature values T, T and T<C> of the measuring points A, B and C; 2), computing temperature gradients delta according to an equation of delta=l(T-T)l / l(H-H)l; 3), computing an average temperature T of a wall at a moment t according to an equation of t=(T<At>+T<Bt>+T<Ct>) / 3, and computing a temperature fall rate phi<average fall> according to an equation of phi<average fall>=(T<average t2>-T<average t1>) / (t2-t1); 4), reducing the quantity of water sprayed on the wall structure or stopping spraying the water on the wall structure when the temperature gradients delta are larger than a preset value; 5), reducing the quantity of the water sprayed on the wall structure when the average temperature T<average t> of the wall is close to or equal to a peak value; 6), covering the wall by perforated films, spraying the wall by a small quantity of water and stopping spraying the water on the wall when the temperature fall rate phi <average fall> are larger than a preset value. The method and the system have the advantage that the maximum water thermalization temperature rise value, the temperature difference and excessive temperature fall rate are reduced, so that cracking of the wall can be efficiently prevented in real time.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a spray maintenance method and system for wall structures. Background technique [0002] With the development of society and economy, the pace of urbanization is getting faster and faster, and the pouring of concrete walls has become ubiquitous. However, the cracks on the surface of concrete walls on many construction sites are becoming more and more serious. [0003] Generally, the reasons for concrete wall cracking are as follows: 1. In the early stage, due to the release of cement hydration heat, the concrete wall will cause the temperature to rise and cause volume expansion. The temperature drop causes the volume of the concrete wall to shrink; 2. The temperature change of the wall is not consistent along the wall section, and the surface of the wall will produce surface cracks due to the temperature difference between the inside and outside; 3. The over...

AI Technical Summary

Problems solved by technology

[0005] At present, there are the following problems in the maintenance method of the wall on the construction site: 1. At present, most of the wall maintenance is only manual watering maintenance, but because the wall is a vertical component and has no water storage function, simple watering can keep the wall moist The maintenance time is very short, so this maintenance method not only consumes labor and wastes water resources, but also has a very poor maintenance effect on the wall; 2. Although there are some automatic water spray maintenance devices at present, these water spray maintenance devices are basically installed. Attached to the wall or wall formwork, the water spray equipment is not kept for a long time, because when the formwork needs to be removed or the wall needs to continue to be constructed, these water spray maintenance devices must be removed; 3. The current wall maintenance method There is no combination of the control of the temperature difference between the inside and outside of the wall and the cooling rate

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