CN-122020810-A - Cast-in-place concrete structure full-period maintenance system combining cloud gateway data transmission

CN122020810ACN 122020810 ACN122020810 ACN 122020810ACN-122020810-A

Abstract

The invention discloses a full-period maintenance system of a cast-in-place concrete structure combining cloud gateway data transmission, which relates to the technical field of building construction and comprises a three-field coupling modeling module, a cavity resonance recognition module, a spray gesture mapping module, a reverse harmonic energy regulation and control module and a self-adaptive spray control module, wherein the three-field coupling modeling module is used for constructing a three-field coupling model of fluid, air bubbles and a pipe wall in a night temperature drop stage, extracting a reflux wave path, air bubble compression response and pipe wall elastic reflection characteristics through time domain decomposition, and generating dynamic baseline data. According to the invention, through coupling modeling and resonance identification, spray offset monitoring and blind area prediction are realized, and anti-resonance injection and self-adaptive control are combined, so that a spray gesture closed-loop adjustment mechanism is constructed, the maintenance uniformity and reliability are improved, the crack risk is reduced, and the service life of the structure is prolonged.

Inventors

LEI YANPENG
LENG MINGLIANG
LI WEI
XIE HONGDONG
QU SHIHAO
ZHANG TENG
HE YALEI
SONG CHUNFEI
DUAN XIAOZHENG

Assignees

瑞森新建筑有限公司

Dates

Publication Date: 20260512
Application Date: 20260226

Claims (10)

1. The full-period maintenance system of the cast-in-place concrete structure combining cloud gateway data transmission is characterized by comprising a three-field coupling modeling module, a cavity resonance identification module, a spray gesture mapping module, a reverse harmonic energy regulation and control module and a self-adaptive spray control module: the three-field coupling modeling module is used for constructing a three-field coupling model of fluid, bubbles and a pipe wall in a night temperature drop stage, extracting a return wave path, bubble compression response and pipe wall elastic reflection characteristics through time domain decomposition, and generating dynamic baseline data; The cavity resonance identification module is used for matching a bubble resonance threshold value with a temperature drop rate by utilizing dynamic baseline data through phase holographic calculation, generating cavity resonance fingerprint mapping, identifying excitation frequency and calibrating a critical frequency band, and is used as a frequency spectrum reference for spray gesture control; the spray gesture mapping module is used for constructing a spray array gesture mapping model based on resonance fingerprint mapping, collecting the pointing track and the space displacement of spray holes, generating a spray offset curvature field, quantitatively covering an attenuation path and extracting a dead zone embryo core; the anti-harmonic energy regulation and control module combines gradient information of a spray deflection curvature field and phase difference distribution characteristics to generate an anti-harmonic injection sequence, and an energy reverse dredging channel is established through the water hammer slow release structure, the air pocket decoupling module and the viscoelastic buffer assembly; The self-adaptive spray control module controls the operation of the topological reversible spray array under the drive of the reverse harmonic injection sequence, performs spray Kong Fanxiang correction by utilizing the piezoelectric micro-actuator matrix, the liquid resistance variable cavity structure and the phase conjugation time sequence valve, and closes the dynamic regulation loop.
2. The full cycle maintenance system of a cast-in-place concrete structure incorporating cloud gateway data transmission of claim 1, wherein the dynamic baseline data generation steps are as follows: In the night temperature drop stage, a water body flow modeling process is established, and the density, viscosity, initial flow velocity and local velocity gradient of the water body in a water supply path are extracted by constructing a three-dimensional structure model and combining with the temperature gradient change trend, so that the calibration of a return wave propagation path is completed; Based on water flow modeling, introducing bubble response modeling, estimating initial volume, compression rate and existence period of bubbles based on flow velocity disturbance and local geometry, and simulating dynamic change of bubble compression behavior in a backflow path; On the basis of the modeling results of water flow and bubble response, an elastic reflection modeling process is established, and deformation delay, elastic recovery and reflection paths of the pipe wall under the disturbance frequency are extracted; based on modeling results of water body flow, bubble response and elastic reflection, speed amplitude, pressure distribution and phase inversion characteristics of low-frequency resonance energy are extracted, a three-dimensional coupling matrix of frequency, time and space is constructed, and dynamic baseline data is output.
3. The full-cycle maintenance system of the cast-in-place concrete structure combined with cloud gateway data transmission according to claim 2, wherein in the process of extracting low-frequency resonance energy, a resonance tendency band is determined by identifying frequency points with continuously increased energy density and phase inversion being highly consistent with elastic deformation of a pipe wall, and the resonance tendency band is embedded into a three-dimensional modeling structure as a core response characteristic in dynamic baseline data.
4. The full-cycle maintenance system of a cast-in-place concrete structure combined with cloud gateway data transmission according to claim 2, wherein the cavity resonance fingerprint mapping generation steps are as follows: Based on a bubble compression response sequence and reflux wave disturbance distribution in dynamic baseline data, extracting a typical disturbance section, and executing multidimensional time sequence reconstruction operation to obtain a bubble volume resonance threshold; on the basis of acquiring a bubble volume resonance threshold value, carrying out high-resolution synchronous matching on the oscillation behavior of the bubble and the temperature drop rate, constructing a two-dimensional matching matrix, and identifying synchronous nodes and the spatial distribution density thereof; Constructing a cavity resonance fingerprint mapping map based on the synchronous node frequency change track, extracting a frequency band domain with continuously rising energy density, and identifying frequency spectrum abnormality by combining the pipe wall elastic reflection parameters; And comparing the frequency band in the cavity resonance fingerprint spectrum with the natural frequency of the structure of the spraying device, and screening out a critical coincidence frequency band to be used as a frequency spectrum response reference interval for spraying gesture control.
5. The full-period maintenance system of a cast-in-place concrete structure combined with cloud gateway data transmission according to claim 4, wherein the cavity resonance fingerprint mapping spectrum is expressed by a three-dimensional coordinate system, wherein the frequency corresponds to the compression amplitude and the spatial distribution position of bubbles, the frequency band is formed by clustering, and the frequency spectrum reference interval is screened according to the frequency coincidence coefficient and is used for judging the easily excited region of the spray gesture offset.
6. The full cycle maintenance system of a cast-in-place concrete structure incorporating cloud gateway data transmission of claim 4, wherein the spray offset curvature field generating step is as follows: based on the cavity resonance fingerprint mapping data, collecting three-dimensional position and gesture track information of a spray hole, and obtaining a pointing track and a space displacement vector; inputting spray hole gesture change data into a gesture mapping model, calculating a spatial offset curvature, generating a spray offset curvature field, and constructing a coverage offset distribution map; Based on the spray offset curvature field, calculating the coverage intensity gradient of a spray path, and establishing a spray coverage attenuation path to form a continuous spatial expression of coverage area change; Extracting a region with the coverage intensity lower than a threshold value from the spray coverage attenuation path, and identifying and positioning the position and boundary of the dead zone embryo core by combining the evaporation rate and the gesture offset direction.
7. The full-cycle maintenance system of the cast-in-place concrete structure combined with cloud gateway data transmission according to claim 6, wherein the monitoring data of the evaporation rate of the concrete surface is further introduced in the identification process of the dead zone embryo core, the area with the spray coverage intensity lower than a threshold value is compared with the change trend of the surface temperature and humidity, the real dead zone embryo core is judged, and the spatial position, the shape and the boundary expansion trend of the real dead zone embryo core are output.
8. The full cycle maintenance system of a cast-in-place concrete structure in combination with cloud gateway data transmission of claim 6, wherein the steps of generating a reverse harmonic injection sequence by combining spray offset curvature gradient and phase difference characteristics, and constructing an energy reverse dredging channel by a water hammer slow release, cavitation decoupling and viscoelastic buffer structure are as follows: combining curvature gradient information of the spray offset curvature field with resonance phase difference distribution, extracting a space frequency curvature matching matrix and identifying a target frequency band set; constructing a reverse harmonic injection control sequence based on the target frequency band set to form an injection wave array with frequency locking capability and spatial asymmetric characteristics; the anti-resonance injection control sequence acts on the energy dredging structure to activate the water hammer slow release structure, the air pocket decoupling channel and the viscoelastic buffer assembly in sequence to form an anti-dredging channel; And dynamically adjusting injection parameters according to feedback results by monitoring the variation trend of the spray offset curvature field and the phase difference fluctuation.
9. The full-cycle maintenance system of a cast-in-place concrete structure combining cloud gateway data transmission according to claim 8, wherein the topology reversible spray array is controlled under the drive of a reverse harmonic injection sequence, the spray Kong Fanxiang correction is realized through piezoelectric actuation, liquid resistance adjustment and a phase conjugation valve, and the closed regulation loop comprises the following steps: Under the action of a reverse harmonic injection control sequence, a piezoelectric micro-actuator array is deployed to drive a spray hole to deflect according to the response characteristic of the spray gesture; A liquid resistance variable cavity structure is introduced, the water supply stability is regulated through an elastic cavity and a multistage channel, and hydrodynamic disturbance caused by posture adjustment is buffered; Configuring a phase conjugate timing valve to construct a bidirectional timing adjustment mechanism to compensate for the response time difference of multiple devices; and constructing a real-time feedback closed loop, continuously updating a frequency spectrum compensation strategy, and dynamically coordinating the linkage of the actuator, the hydraulic resistance cavity and the time sequence valve.
10. The full-cycle maintenance system of a cast-in-place concrete structure combined with cloud gateway data transmission according to claim 9, wherein a parallel arrangement mode is adopted between the piezoelectric micro-actuator array and the liquid resistance variable cavity structure, and the piezoelectric micro-actuator array and the liquid resistance variable cavity structure respectively receive frequency spectrum feedback signals and synchronously execute posture correction operation.

Description

Cast-in-place concrete structure full-period maintenance system combining cloud gateway data transmission Technical Field The invention relates to the technical field of building construction, in particular to a full-period maintenance system for a cast-in-place concrete structure by combining cloud gateway data transmission. Background The full-period maintenance of the cast-in-place concrete structure combining cloud gateway data transmission refers to the realization of real-time acquisition, transmission and intelligent control of key maintenance parameters such as temperature, humidity and the like by utilizing a cloud gateway based on a product life cycle management concept in the whole process of mass concrete construction and hardening, so that an intelligent closed-loop maintenance system penetrating through concrete from pouring, condensation and cooling to a strength stabilization stage is constructed. The system brings the concrete curing process into the product life cycle management framework, and realizes the whole process information tracing and closed loop supervision from material entrance, pouring construction, early-stage temperature control and later-stage performance monitoring to structure maintenance. The method is characterized in that the temperature change of the concrete center and the surface is continuously monitored through a pre-buried thermometer and a temperature acquisition instrument in the construction stage, and data are uploaded to a cloud platform in real time through a cloud gateway after being analyzed by a processing terminal, so that a visual temperature control file and a life cycle data node are formed. The system automatically adjusts the water outlet temperature and the spraying period of the heating device according to the temperature control instruction fed back by the cloud, ensures that the temperature difference between the inside and the outside of the concrete is stabilized in a safe interval, and prevents cracks and strength degradation caused by temperature shock. Meanwhile, the data transmission function of the cloud gateway unifies maintenance data of different construction sites and different stages to a life cycle database, and provides decision support, quality tracking and long-term performance evaluation basis based on the life cycle for construction managers, so that an intelligent, informationized and full life cycle oriented concrete maintenance management mode is realized. The prior art has the following defects: In the prior art, an intelligent curing system for large-volume concrete generally adopts a continuous water supply or timing spraying mode to maintain the balance between the surface humidity and the temperature, but the dynamic coupling effect between the water flow characteristic and the natural frequency of the structure at the night temperature drop stage is not fully considered. When the temperature dip causes the formation of a reflux wave and an undischarged bubble still exists in the pipeline, the fluid fluctuation and the bubble compression expansion can be overlapped to generate a cavity resonance phenomenon. If the resonance frequency is close to the natural frequency of the main body component of the device, the micro-amplitude vibration of the rod system is triggered under the low-frequency condition, so that the spatial arrangement of the spraying holes generates imperceptible deviation. The offset can accumulate to form uneven spray coverage in long-term operation, so that a partial concrete surface maintenance missing area is caused, a maintenance coverage blind area is formed, and the surface layer is concentrated in cold shrinkage stress and crack expansion is induced. The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to provide a full-period maintenance system of a cast-in-place concrete structure combined with cloud gateway data transmission, so as to solve the problems in the background technology. In order to achieve the aim, the invention provides the technical scheme that the full-period maintenance system of the cast-in-place concrete structure combining cloud gateway data transmission comprises a three-field coupling modeling module, a cavity resonance identification module, a spray gesture mapping module, a reverse harmonic energy regulation module and a self-adaptive spray control module: The three-field coupling modeling module is used for constructing a three-field coupling model of fluid, bubbles and a pipe wall in a night temperature drop stage, extracting a reflux wave path, bubble compression response and pipe wall elastic reflection characteristics through time domain decomposition, and generating dynamic baseline data containing low-f