CN-122014005-A - Cracking-preventing concrete watering and curing equipment and application method thereof

CN122014005ACN 122014005 ACN122014005 ACN 122014005ACN-122014005-A

Abstract

The invention relates to cracking-preventing concrete watering and curing equipment, which comprises a mobile bearing platform, an intelligent temperature sensing system, a central controller, a zoned spraying and recycling system, a water supply circulating system and a water cooling unit. The partition system is provided with a spraying module at the top, a height-adjustable reflux tank and a controllable micro-seepage module. The method is characterized in that the method is based on real-time monitoring of the temperature difference between the upper end and the lower end of a wall body, the spraying strength, the height of a height-adjustable reflux groove and the seepage rate are intelligently adjusted, when the temperature difference is large, the upper spraying cooling is enhanced, the height of the height-adjustable reflux groove is reduced, the cooling range is enlarged, the seepage rate of the lower part is reduced to protect the temperature, and when the temperature difference is small, the method is converted into a balance moisturizing mode. The integrated water cooling unit ensures stable and efficient circulating water temperature. The invention realizes the span from uniform moisture preservation to precise temperature adjustment and cracking prevention, can effectively prevent cracks caused by sunlight temperature difference of structures such as ultra-long basement outer walls and the like, and has the advantages of water saving, intelligence and high efficiency.

Inventors

Zou Xiaoniu
JIANG XIAOBING
XIE HONGYANG
ZHENG HAO
Shuai Meixin

Assignees

江西建工国际工程有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (9)

1. An anti-cracking concrete watering and curing device, which is characterized by comprising: The mobile bearing platform is provided with a navigation module; The intelligent temperature sensing system is used for acquiring temperature distribution data of the surface of the concrete wall and calculating real-time temperature difference delta T between the upper end and the lower end of the wall; The central controller is connected with the intelligent temperature sensing system and the navigation module and is used for generating a control instruction according to the real-time temperature difference delta T; The partition spraying and recycling system is arranged on the movable bearing platform and is connected with the central controller, and the partition spraying and recycling system comprises: The top spraying module is used for spraying water to the upper area of the wall body; a height-adjustable reflux tank below the spray module for collecting water flowing down from the wall, and whose height can be adjusted relative to the wall to change the water film flow path; the controllable micro-seepage module is arranged on the height-adjustable reflux groove and is used for guiding a part of water in the height-adjustable reflux groove to the lower area of the wall body at a controllable flow; A water supply and circulation system connected with the spray module and the height-adjustable reflux tank for recycling water supply and recovery water, and And the water cooling unit is integrated in the water supply and circulation system and is used for cooling the recovered water.
2. The cracking-preventing concrete watering and curing equipment according to claim 1, wherein the controllable micro-seepage module is a linear gate valve adjusting mechanism and comprises a plurality of holes formed in the height-adjustable reflux groove, water outlets connected with the holes, a gate plate movably arranged at the holes for adjusting the opening degree of the holes and a telescopic device for driving the gate plate to move, and the telescopic device is electrically connected with the central controller.
3. The cracking-resistant concrete watering and curing device according to claim 1, wherein the water cooling unit is a forced air cooling plate-fin radiator and comprises an aluminum plate-fin radiator and an axial flow fan with a blowing direction facing the aluminum plate-fin radiator, and the axial flow fan is electrically connected with the central controller.
4. The anti-cracking concrete watering and curing device according to claim 1, wherein the intelligent temperature sensing system comprises a plurality of fixed wireless temperature sensors arranged on the surface of a concrete wall body and a thermal infrared imager mounted on the movable bearing platform.
5. The anti-cracking concrete watering and curing apparatus according to claim 1, wherein the central controller is configured to synchronously adjust the spraying parameters of the spraying module, the height of the height-adjustable reflow slot, and the flow rate of the controllable micro-seepage module based on the deviation of the real-time temperature difference DeltaT from a preset target temperature difference DeltaT_target.
6. The anti-cracking concrete watering and curing apparatus according to claim 5, wherein the adjustment strategy of the central controller comprises: When delta T is larger than a first threshold value, increasing the spraying strength of the spraying module, reducing the height of the height-adjustable reflux groove, and reducing the flow of the controllable micro-seepage module; when deltat is smaller than or equal to the first threshold value and larger than the second threshold value, adopting medium spraying strength, the height of the height-adjustable reflux groove and seepage flow; when Δt is less than or equal to the second threshold, spray intensity to maintain basic moisturization is employed, the height of the adjustable height backwash slot is raised, and low permeate flow or permeate shut off is employed.
7. The cracking-preventing concrete watering and curing device according to claim 1, wherein the water supply and circulation system comprises a water storage tank, a main water supply pump and a water return pump, wherein the main water supply pump supplies water in the water storage tank to the spraying module, and the water return pump conveys water collected by the height-adjustable reflux groove to the water cooling unit for cooling, and the cooled water is refluxed to the water storage tank.
8. A method for watering and curing cracking-preventing concrete, which is implemented by the equipment for watering and curing cracking-preventing concrete according to claim 7, and is characterized by comprising the following steps: S1, acquiring temperature data of the surface of a concrete wall, and calculating a real-time temperature difference delta T between the upper end and the lower end of the wall; s2, comparing the real-time temperature difference delta T with a preset target temperature difference; And S3, generating and executing a control instruction according to the comparison result, wherein the control instruction at least comprises a spraying control instruction of the spraying module at the top, a height adjusting instruction of the height-adjustable reflux groove and a flow adjusting instruction of the controllable micro-seepage module, so that when the delta T is larger, the cooling of the upper part of the wall body is enhanced, the water supply of the lower part of the wall body is limited, and the real-time temperature difference delta T is reduced.
9. The method for watering and curing the cracking-preventing concrete according to claim 8, wherein the control strategy in the step S3 is dynamically regulated in a closed loop mode, temperature data are acquired again and new delta T is calculated after the control instruction is executed, and fine adjustment is carried out on the spraying control instruction of the spraying module, the height adjusting instruction of the height-adjustable reflux groove and the flow adjusting instruction of the controllable micro-seepage module according to the deviation of the new delta T from the target temperature difference until the delta T reaches or approaches to the target temperature difference range.

Description

Cracking-preventing concrete watering and curing equipment and application method thereof Technical Field The invention relates to the technical field of concrete curing, in particular to cracking-preventing concrete watering curing equipment and a using method thereof. Background With the expansion of the development scale of urban underground space, underground structures with ultra-long planar dimensions are increasingly used. The basement outer wall of the structure is often integrally poured with the top plate, and the length of the basement outer wall exceeds the maximum distance between expansion joints which are arranged in a standard manner. In the summer construction or use stage, the outdoor roof of the basement is rapidly increased by the sunlight radiation temperature, thermal expansion is generated, and the top end of the outer wall rigidly connected with the outdoor roof is pulled to displace. However, the bottom end of the outer wall is restrained by soil, the temperature change is tiny, so that the whole wall bears huge up-down temperature difference, obvious temperature stress is generated, penetrating cracks are extremely easy to initiate, and the durability, the waterproof performance and the safety of the structure are seriously affected. The traditional concrete curing method mainly aims at plastic shrinkage and drying shrinkage of concrete in early hardening, and the core aim is moisture preservation. Common means include manual watering, covering plastic films or geotextiles, and stationary spray systems. The method has obvious defects that 1) uniformity is poor, manual watering cannot guarantee maintenance continuity and uniformity, dry and wet alternation is easy to cause, shrinkage cracks are possibly induced, 2) the method is single in target, namely only moisture preservation is concerned, structural temperature stress caused by rapid change of the environment temperature (particularly temperature rise of a top plate caused by sunlight) cannot be dealt with, 3) water resource waste, namely continuous flood irrigation or timed spraying is large in evaporation loss in an open air environment, and is not environment-friendly, and 4) no target is provided, namely the key part (such as the top end of an outer wall) with concentrated temperature stress cannot be subjected to directional strengthening intervention. In the prior art, some automatic maintenance equipment also appears, but most of the functions of the equipment are still limited to regular and quantitative uniform water spraying, and the problem of cracking caused by uneven distribution of temperature fields of all parts of the structure is not fundamentally solved although the labor is saved. For wall cracking caused by upper thermal expansion as a dominant factor, a special maintenance device and method capable of actively and intelligently adjusting a structural temperature field, particularly reducing the temperature difference of key parts, are lacking. Therefore, the intelligent regulation can be directly carried out on the temperature gradient of the concrete structure (especially the basement outer wall), and the temperature difference stress is restrained through active intervention, so that the effective anti-cracking watering maintenance equipment and method are realized, and the intelligent regulation method has urgent engineering demands and important technical value. Disclosure of Invention The embodiment of the invention provides cracking-preventing concrete watering maintenance equipment and a using method thereof, which can solve the problem that the cracking of concrete caused by uneven temperature field distribution of each part of a structure cannot be fundamentally solved in the prior art. In order to solve the technical problems, the invention adopts the following technical scheme that the anti-cracking concrete watering and curing equipment and the using method thereof are adopted, wherein the anti-cracking concrete watering and curing equipment comprises a mobile bearing platform, a water supply and circulation system, a zoned spraying and recovery system, an intelligent temperature sensing system and a central controller. 1. A mobile load-bearing platform provides support and mobility for all other components of the device. Crawler-type or all-terrain wheeled chassis are commonly used, and navigation modules (such as RTK-GPS and laser radar) are integrated, so that the equipment can automatically cruise along a preset path or along a concrete wall according to instructions. 2. The water supply and circulation system comprises a water storage tank, a main water supply pump, a water return pump, a pipeline and a valve. The innovation of the system is that an integrated water cooling unit is integrated. The water cooling unit comprises an aluminum plate-fin radiator and an axial flow fan. The recovered water with the temperature rising enters the aluminum plate-fin radiator, the axial flow fan drives