CN110987057A - Hydraulic pressure is automatic monitoring system in high in clouds for creeping formwork - Google Patents
Hydraulic pressure is automatic monitoring system in high in clouds for creeping formwork Download PDFInfo
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- CN110987057A CN110987057A CN201910940157.5A CN201910940157A CN110987057A CN 110987057 A CN110987057 A CN 110987057A CN 201910940157 A CN201910940157 A CN 201910940157A CN 110987057 A CN110987057 A CN 110987057A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/28—Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer and which are anchored in the hardened concrete
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Abstract
The invention discloses a cloud automatic monitoring system for a hydraulic creeping formwork, which relates to the technical field of creeping formworks and comprises a data acquisition module, a data transmission module and a monitoring terminal, wherein the data acquisition module comprises a stress sensor and a cantilever beam weighing sensor which are used for acquiring stress information of each part of a hydraulic creeping formwork frame body, an inclination angle sensor which is used for acquiring an inclination angle of the hydraulic creeping formwork frame body, an acceleration sensor which is used for acquiring the movement speed of the hydraulic creeping formwork body, a static level gauge which is used for acquiring the synchronism of the hydraulic creeping formwork body under different working conditions, an annular axial force sensor which is used for acquiring the stress condition between a tail cone and a wall body of the hydraulic creeping formwork body and an air speed sensor which is used for acquiring the field working condition of the hydraulic creeping formwork; the data transmission module comprises a multi-channel automatic data acquisition instrument and an Internet of things; the multi-channel automatic data acquisition instrument receives the output data of the data acquisition module and sends the output data to the Internet of things; the monitoring terminal comprises terminal equipment and a monitoring system installed on the terminal equipment.
Description
Technical Field
The invention relates to the technical field of creeping formwork, in particular to a cloud automatic monitoring system for a hydraulic creeping formwork.
Background
At present, in the template engineering of various super high-rise building projects, a relatively wide template is applied as a hydraulic automatic climbing template, and the development of the hydraulic automatic climbing template construction technology brings the development of super high-rise buildings and simultaneously provides new challenges for the design and construction of building structures. The climbing formwork frame body structure has more or less risks from the beginning of construction to completion to the time of putting into service, and the aging after a plurality of years enters the whole life cycle of a maintenance stage, particularly in the construction stage, the appearance, the rigidity, the load condition, the constraint condition and the like of the climbing formwork frame body structure are continuously changed due to the incompleteness of the structure, so that the average risk rate of the structure in the stage is the highest, and the construction stage is the stage in which accidents are most likely to occur in the whole life cycle of the building. According to statistics, most engineering accidents occur in the construction stage, and the potential safety hazards of the existing climbing formwork construction of the super high-rise building are mainly concentrated on: climbing formwork system member atress is too big, and the climbing formwork support body climbs asynchronous and the structure section fracture that leads to, and climbing formwork system produces horizontal displacement and slope and collapses, and hydraulic pressure layer bracing caudal vertebra pressure is too big and lead to major structure damage etc.. Therefore, stress of a rod piece of the climbing formwork frame body structure, synchronism of the climbing frame, system verticality, tail cone pressure of the inclined strut and the like are all key control indexes of climbing formwork construction safety of the super high-rise building, and are the most important factors influencing durability of the super high-rise building and ensuring construction safety.
Therefore, it is necessary to adopt an advanced cloud online automatic monitoring technology under the condition of ensuring the detection items specified by the specifications to realize the intelligent monitoring of the whole process of the climbing formwork construction of the super high-rise building, automatically monitor the stress parameters and other important parameters of the key parts of the structure in real time, diagnose the stress state and the safety performance of the structure in time, send out early warning in time when finding problems, ensure the safe and smooth construction of the super high-rise climbing formwork structure, and have very important significance for realizing the fine management of the super high-rise building construction and ensuring the construction safety.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a cloud automatic monitoring system for a hydraulic climbing formwork, which is used for acquiring the stress state of each part of a hydraulic climbing formwork body, the inclination angle of the hydraulic climbing formwork body, the acceleration data of the hydraulic climbing formwork body and the field environment data in real time or at regular time, and simultaneously sending the data to a monitoring terminal through the Internet of things, so that an engineer can timely master the state of the hydraulic climbing formwork body through the monitoring terminal and prevent the situation in the bud.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows:
the invention aims to provide a cloud automatic monitoring system for a hydraulic creeping formwork, which at least comprises:
a data acquisition module, the data acquisition module comprising: the system comprises a stress sensor and a cantilever beam weighing sensor for acquiring stress information of each part of a hydraulic creeping formwork frame body, an inclination angle sensor for acquiring an inclination angle of the hydraulic creeping formwork frame body, an acceleration sensor for acquiring a movement speed of the hydraulic creeping formwork frame body, a static level for acquiring synchronism of the hydraulic creeping formwork frame body under different working conditions, an annular axial force sensor for acquiring stress conditions between a tail cone of the hydraulic creeping formwork frame body and a wall body, and an air speed sensor for acquiring field working conditions of the hydraulic creeping formwork frame body;
the data transmission module comprises a multi-channel automatic data acquisition instrument and an Internet of things; the multichannel automatic data acquisition instrument receives output data of the data acquisition module and sends the output data to the Internet of things;
the monitoring terminal comprises terminal equipment for data interaction with the Internet of things and a monitoring system installed on the terminal equipment.
Further: and a temperature sensor is arranged in the stress sensor and sends collected data to the multi-channel automatic data collector.
Further: the terminal equipment comprises a computer, a mobile phone and an alarm.
Further: the data acquisition module carries out data interaction with the data display module, and the data display module carries out data interaction with the Internet of things.
Further: an acrylic protective shell is arranged on the outer side of each sensor of the data acquisition module.
Further: the model of the wind speed sensor is FC-5S.
Further: the tilt sensor is a TLS526T type double-shaft tilt sensor.
The invention has the advantages and positive effects that:
by adopting the technical scheme, the moisture-proof and anti-collision problem of the monitoring sensor and the LED display is solved by using the high-strength acrylic protective shell, the drying agent and the waterproof baffle. The stress sensor (built-in ambient temperature sensor) is used, the stress monitoring problem of the creeping formwork frame body rod piece under different working conditions is solved, and the synchronism monitoring problem of the creeping formwork frame body under different working conditions is solved by using the static level gauge. The displacement swing of the frame body in the horizontal direction and the vertical direction in the construction process is solved by using the acceleration sensor. The small-size annular axial force sensor is used for solving the problem of monitoring the stress between the tail cone of the frame body and the wall body. The problem of monitoring the inclination degree of the creeping formwork frame body under different working conditions is solved by using a standard current type inclination angle sensor. The high-precision dynamic acquisition instrument is used for dynamically acquiring and storing monitoring data of the frame body in real time, and the model FC-5S type wind speed sensor is used for monitoring the wind speed condition of a construction site in real time, so that reliable safety guarantee measures can be provided for construction operators. Because the stacking load at the stacking layer of the whole creeping formwork frame body is large, the number of operators is large, and the safety accident caused by local damage is easy to occur; therefore, the cantilever weighing sensor is used and matched with the corresponding dynamic LED display device, and the problem that the weight of the stacked load cannot be accurately mastered by an operator when the load is stacked is solved. The application of the monitoring system in the super high-rise creeping formwork project of the middle intersection-through violin square well verifies that the monitoring data is dynamic, efficient, accurate, objective and timely in early warning, and the monitoring system has high adaptability and reliability to the complex construction environment of a construction site.
Description of the drawings:
FIG. 1 is a block diagram of the architecture of the preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of a hydraulic creeper body in accordance with a preferred embodiment of the present invention;
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1 to 2, the invention researches the intelligent monitoring technology of the climbing formwork construction safety of the super high-rise building and develops a real-time monitoring device of the construction safety according to the requirements and characteristics of the climbing formwork construction safety management of the super high-rise building aiming at the outstanding construction safety control problem existing in the super high-rise building construction; finite element simulation is carried out on the creeping formwork structure, and evidences are carried out through a stacking test, so that a basis is provided for safety evaluation; establishing an engineering safety monitoring cloud information system, and realizing real-time uploading of monitoring data, dynamic display, data cloud sharing and arrangement, processing and safety degree judgment; on the basis, the application research of engineering is carried out by combining with actual engineering.
The utility model provides a hydraulic pressure is automatic monitoring system in high in clouds for creeping formwork, is the automatic monitoring system who comprises multichannel automation data acquisition appearance, stress transducer, annular axial force sensor, acceleration sensor, inclination sensor, air velocity transducer, cantilever beam weighing sensor, static level, thing networking wireless transmission module, LED dynamic display, alarm device, computer, high in the clouds monitoring software. The system is installed and debugged when the whole hydraulic climbing formwork frame body is in an empty load state in the initial assembly completion period of the whole hydraulic climbing formwork frame body, a cantilever beam weighing sensor is arranged at the position of the maximum stress point under the stacking layer of the frame body, a plurality of LED dynamic displays with the size of 100cm x 80cm are arranged in the stacking platform area of the stacking layer material of the frame body, and 20 alarm lamp devices and corresponding short message alarm modules are matched, selecting representative rod diagonal bracing and cross beam rod (the worst stress point) to install a high-precision stress monitoring sensor under the empty load state of the hydraulic climbing formwork body, an annular axial force sensor is arranged at the tail cone supporting position at the bottom end of the climbing formwork frame body, a plurality of inclination angle sensors and acceleration sensors are respectively arranged at the top end and the low end of the middle part of the frame body, the wind speed monitor is arranged at the open position at the topmost end of the frame body, and a plurality of precise level gauges are arranged at the hydraulic layer position of the frame body to form a communication loop; monitoring the synchronism of the frame body under various working conditions, and arranging a plurality of automatic acquisition instruments in the hydraulic layer area of the frame body;
the stress conditions of all parts of the hydraulic creeping formwork frame body are measured by high-precision stress sensors and cantilever beam weighing sensors which are welded and installed on the rod piece. The inclination degree and the movement speed of the frame body are measured through an acceleration sensor and an inclination sensor which are mounted at the top end and the low end of the middle part of the frame body, and finally, real-time automatic acquisition, analysis and storage are carried out through a matched precise dynamic acquisition instrument; the software automatically analyzes and judges the processing according to the input calculation formula and the limit load value when the limit load value is exceeded; the software can send out alarms in various modes such as short message prompt, field alarm lamp prompt, software interface red early warning and the like, and the monitoring result is displayed in real time through an LED display of the operation field to guide the on-site standard operation. The synchronism of the hydraulic climbing formwork frame body is monitored in real time under the action of multiple working conditions through a static level gauge arranged on a hydraulic layer of the frame body, and monitoring data are connected with an internet of things all-network-through wireless transmission module through an RS485 conversion interface; the monitoring data are transmitted to a monitoring cloud platform, the cloud platform analyzes and processes the uploaded monitoring data, when the limit value is exceeded, a monitoring system sends out an early warning prompt, and the early warning mode is the same as the stress early warning. The construction area environment wind speed, direction and temperature monitoring adopts a built-in temperature sensor of a stress sensor and an FC-5S type wind speed sensor for real-time monitoring, automatic acquisition and storage are realized through a high-precision automatic acquisition instrument, and finally monitoring data are uploaded to a monitoring cloud platform for analysis and processing through an RS485 conversion interface connected with an Internet of things wireless transmission module. The multiple monitoring sensors are collected in the multi-channel automatic data acquisition instrument, automatically acquired and stored, and finally connected with the Internet of things wireless transmission module through the RS485 conversion interface, and the monitoring data are uploaded to the monitoring cloud platform software for analysis, processing and sharing.
The multichannel automatic data acquisition instrument: the precision is as follows; the frequency is +/-0.01 Hz, the temperature is 0.1 ℃, the resistance ratio is 0.00001 omega, the resistance is 0.001 omega, the voltage is less than 0.1mv, the current is 0.5uA, the clock precision is +/-1 min/month, the device consists of two 16-channel high-speed mcu multipoint control unit acquisition modules and a DC12V rechargeable battery, and the device is matched with a corresponding air switch device, a current leakage prevention device and a lightning protection device. Each communication port consists of 6 wiring ports, wiring of each port is defined differently, wiring modes are treated differently, the whole mcu acquisition unit is installed in a stainless steel moistureproof anti-collision case, a 4G wireless transmission module communicated with the Internet of things is installed in each acquisition case and is connected with the mcu high-speed acquisition module through an RS485 data line, when the mcu acquisition module acquires data, the wireless transmission module of the Internet of things transmits the data to monitoring cloud platform software, the software comprehensively analyzes, discriminates and processes the data according to input formula parameters and limit values, and the data are displayed in various forms such as a current monitoring value, a current load percentage and the like, and if the current data exceeds the limit value; the monitoring platform can send out alarm in the forms of software interface early warning prompt, mobile phone client early warning prompt, mobile phone short message early warning prompt, on-site dynamic LED display and alarm lamp.
The inclination angle sensor is a TLS526T type double-shaft inclination angle sensor, the measuring range of the inclination angle sensor can reach +/-30 degrees, the precision is 0.004 degrees, the inclination angle sensor is respectively installed at positions of a creeping formwork frame body ② and a creeping formwork frame body ⑥ through a customized moistureproof anti-collision shell and an adjustable flat base, as shown in figure 2, the inclination degree and the inclination trend of the hydraulic creeping formwork frame body can be monitored in real time, and the field safety operation of the perpendicularity guarantee of the frame body can be intuitively known.
The resolution of the acceleration sensor is 5 x 10-6m/s2The base capable of being leveled is installed at the maximum shaking position of the climbing formwork frame body, namely the ② position and the ⑥ position, so that the swinging frequency and the speed of the hydraulic climbing formwork frame body can be monitored in real time.
The model of the cantilever beam weighing force measuring sensor is DJXB-125, and the zero point output is +/-0.03% F.S; the support is arranged at the maximum stress point under the material piling layer through a fixed support; as shown in figure 2, the nodes of the 15 and 16 parts of each frame are mounted in a manner that each two sensors form a group of monitoring points, monitoring data can correspond to each other, the stress condition of the frame can be analyzed more accurately, the load stacking amount can be monitored in real time, and monitoring results can be displayed on site dynamically in real time through a matched LED display.
The hydrostatic level is arranged at a rod ⑤ of a frame body hydraulic layer, as shown in figure 2, the precision of the hydrostatic level is that a communication loop is formed among all sensors of +/-0.02% F.S, quantitative liquid is injected, the synchronism of the frame body can be displayed in real time through the water level difference among the sensors under different working conditions, and the monitoring effect is clear at a glance.
The stress sensor is respectively arranged at the position with the maximum stress of the structure under the most unfavorable working condition of the frame body and the position ①③④⑩ through a self-provided mounting support, and the stress condition of the frame body rod piece under different working conditions is monitored in real time.
If the current measuring point monitoring value exceeds the corresponding limit value, the monitoring cloud platform sends an alarm instruction to the field alarm lamp device and the field LED dynamic display while giving an early warning prompt through a software interface, and the operation field is rapidly reminded.
The mcu is a multipoint control unit acquisition module, is arranged in a stainless steel moistureproof and anti-collision case, collects various types of monitoring sensors into the mcu acquisition module, and automatically and circularly acquires and stores monitoring data of various sensors within 24 hours.
The wireless transmission module of the internet of things is stably installed in the automatic collection box through a fixing nut, a 4G communication card is installed in the wireless transmission module, the wireless transmission module of the internet of things is connected with the collection module of the mcu multipoint control unit through an RS485 data conversion interface, when the mcu module collects and stores data, the wireless transmission module of the internet of things synchronously uploads monitoring data to a monitoring cloud platform software PC end and a mobile phone client, real-time data sharing is achieved, and mobile office requirements are met.
Monitoring the ambient temperature and the wind speed; the temperature monitoring can be synchronously monitored by adopting a temperature sensor carried by the stress sensor, and the monitoring mode is the same as that of the stress monitoring. The wind speed monitoring adopts a standard current type precise anemometer which is arranged in the open place of the frame body to monitor the wind speed and the wind direction of the operation site in real time, and when the construction area exceeds 7-level wind, an alarm is sent out to inform the construction site in time so as to ensure that necessary protective measures are taken.
The automatic acquisition instrument acquires various types of monitoring data through the Internet of things wireless transmission module correspondingly connected with the automatic acquisition instrument; and transmitting the monitoring data to monitoring cloud platform software, automatically calculating a stress monitoring value, an inclination value, a load percentage and the like of a monitoring point by the platform according to a formula, judging whether the monitoring value exceeds a limit load value, and automatically sending an alarm prompt if the monitoring value exceeds a limit reference value.
The monitoring cloud platform software can provide functions of equipment access, equipment monitoring, state alarming and remote maintenance. From the architecture, the platform can be divided into five major parts: the platform can give an alarm according to the abnormal state of the equipment so as to timely process the equipment with faults and really realize a modern engineering operation management mode combining remote management and field inspection. The main functions are as follows: GIS information display, system management, equipment management, measuring point configuration, data curve and early warning management.
The hydraulic creeping formwork cloud automatic monitoring system automatically transmits acquired data to the control platform through a network, the control platform analyzes and processes the acquired data and outputs stress and related information of monitoring points, the system has the advantages of high automation degree, real-time data transmission, accurate monitoring result, human errors reduction, dynamic design, dynamic construction and the like, field operation managers can conveniently master construction dynamic states in time, a basis is provided for safe construction, a reference basis is provided for a creeping formwork frame body theory and a design method, relevant prediction is made for evaluating stability in the creeping formwork construction and using process, prediction data is provided for owners, construction units and supervision, construction engineering is tracked and controlled, relevant construction processes and steps are reasonably adopted and adjusted, and optimal economic benefits are obtained for engineering projects.
The automatic monitoring system of hydraulic climbing formwork system high in clouds is according to the operating mode of actual construction, the atress condition and the required precision of each position member of support body, and the constitution scheme of definite system. The system selects a series of precision measurement sensors such as an automatic precision dynamic acquisition instrument, an on-site LED dynamic display, an alarm lamp device, an Internet of things 4G full-network wireless transmission module, a high-sensitivity stress sensor, a high-precision cantilever beam weighing force measuring sensor, a precision static level gauge, a differential resistance type annular axial force sensor and the like, monitoring software is divided into a computer-side PC version and a mobile phone client APP version, monitoring data are uploaded synchronously in real time, data are shared in real time, dynamic display and reaction are timely, monitoring personnel can remotely control and check monitoring conditions in real time, when the monitoring value exceeds a set limit value, an alarm prompt is synchronously sent to a construction site alarm device and a manager mobile phone by a monitoring platform, an alarm is sent out in a software interface early warning prompt mode, a construction site LED dynamically displays monitoring results in real time, and the simultaneous monitoring effect of a construction operation site and the rear side is achieved, completely meets the requirements of mobile office.
The automatic monitoring system in hydraulic pressure creeping formwork system high in clouds has improved monitoring efficiency, has realized that dynamic observation, data real-time transmission, trend of change full automatization, data acquisition's frequency are high, data transmission rate is high, and monitoring data shows through the real-time developments of the LED display screen of field installation, and data can 24 hours incessant measurement to can remote control and data acquisition, the safe and stable construction of creeping formwork support body can be guaranteed. And manual monitoring is adopted, so that the efficiency is reduced, the data recording is slow, and 24-hour uninterrupted monitoring cannot be carried out.
The sensing end of the invention is composed of: the high-precision stress sensor, the acceleration sensor, the inclination angle sensor, the communicated precision hydrostatic level, the high-sensitivity wind speed sensor, the cantilever beam weighing sensor and the annular axial force sensor form a powerful sensing system, and monitoring point positions of the powerful sensing system cover all important nodes of the frame body structure.
Specifically, high accuracy stress sensor passes through the stainless steel installation piece welded mounting of instrument self-carrying, in order to avoid receiving the burn damage at the welding installation in-process sensor, the event will be through self-control instrument model first to erection support fixed mounting, treat that the erection support welding is firm and the cooling back, install its accurate stress sensor in the support and through the support from taking adjusting nut with it firm avoid in the testing process because the not hard up of sensor causes the error, pass through RS485 switching to high speed dynamic acquisition appearance through thing networking wireless transmission module with all stress sensing at last and upload to monitoring platform.
The installation mode of acceleration sensor, inclination sensor, air velocity transducer, cantilever beam weighing sensor is the same with stress transducer, and the mode that is the customization support is with its firm in support body structure survey point department, at last unified with its access high speed dynamic acquisition appearance through thing networking wireless transmission module upload to monitoring cloud platform.
The installation mode of the precise static level gauge is more complex compared with other sensing installation modes, and the climbing formwork body hydraulic operation layer is more obvious than other operation layers; the cross operation is less and the operation people flow is small, so this layer is selected as a frame body synchronism monitoring measuring point, a precise static level sensor is respectively arranged at each section of the frame body, all sensors are communicated by a high-pressure air pipe with a specified model by adopting a communication principle, quantitative liquid is injected, all the level sensors are uniformly connected into a high-speed acquisition instrument through an RS485 interface after the liquid level is stably debugged, when the liquid level difference between 1 section of the frame body and the other 1 section exceeds a specified limit value, an alarm is timely sent out, and timely and effective adjustment measures are taken.
The high-speed automatic acquisition instrument automatically acquires monitoring data through an acquisition interval and a sampling mode which are input in advance, and maps the monitoring result to a construction site LED dynamic display screen through an RS485 data interface of the mcu multipoint control unit acquisition module, so that the real-time dynamic display of the data of the construction site is realized. Each high-speed automatic acquisition instrument is matched with an Internet of things wireless transmission module, a 4G full-network communication telephone card seat is arranged in the transmission module, the transmission module is connected with the acquisition instrument through an RS485 data conversion interface, and when the acquisition module acquires data, the Internet of things wireless transmission module synchronously uploads the acquired data to monitoring cloud platform software and a mobile phone user end in real time so as to perform real-time automatic analysis and judgment processing and achieve real-time data sharing; when the monitoring value exceeds the limit value, the platform automatically sends an instruction to a field alarm lamp and a mobile phone end of a field manager, and simultaneously sends an alarm prompt in various forms of a software interface and a mobile phone client interface, so that the mobile office requirement is met.
The monitoring system software part comprises a PC (personal computer) end and a mobile phone client, the data display modes are the same, the monitoring time, a monitoring part test point diagram, a real-time load value, a load percentage, a monitoring data list, a monitoring data curve and the like can be displayed specifically, and when the monitoring value exceeds a limit value, the monitoring interface sends early warning prompts in various modes.
Calculation formula of creeping formwork monitoring system
The distribution of the rods of the climbing formwork frame body is shown in figure 2
1. Climbing form frame stress analysis
1.1, calculating and analyzing the monitoring value of the stress value of the acquisition instrument:
after the monitoring original data are uploaded to a monitoring system platform, the system acquires original signals according to an acquisition system; and calculating to obtain a stress value (Y).
Y＝G(R1-R0)+C
Wherein: g is the product of the rate coefficient and the elastic modulus of the sensor;
r1 and R0 are the current measured value and the initial measured value respectively;
c is as follows: constant number
1.2 force monitoring Limit analysis
The stress sensors are respectively arranged at the positions of the frame members ①③④⑩, as shown in fig. 2;
① rod force limit analysis
According to the design load of 4.0kN/m2, the influence width is 4.8m, the constant load coefficient is 1.2, and the bending moment of a No. ① rod is as follows:
maximum stress:
the maximum stress value (Y) of No. ① rod piece can be obtained by calculationMAX) Is 69.7MPa, so the limit value of 69.7MPa is input in the limit load value of the monitoring system when Y is>YMAXAs described above; the system will automatically send out alarm, and the on-site LED dynamically displays the monitoring data in real time.
The maximum weight of a single leg of the distributing machine is 5T, the design load of the top layer is 4.0kN/m2, the influence width is 4.8m, the constant load coefficient is 1.2, and the stress of the internal mold is calculated as follows:
according to the geometrical relationship, the guide rail is stressed:
the inclined strut is stressed:
the formula is calculated to obtain: the maximum stress limit of the vertical supporting guide rail at the stacking position of the creeping formwork frame body material distributor is 14.2MPa, and the maximum stress of the inclined strut is as follows: 1.9MPa, when the monitoring value exceeds the limit value, the system automatically gives an alarm.
As shown in fig. 2: frame body nodes # 15 and #16 are the installation positions of the cantilever beam weighing sensors, are numbered as F15 and F16 respectively, and the total value of F15 and F16 is the actual load value of the monitored cross section. Above the measuring point is: a stockpile area with a length (L) of 3m and a width (X) of 2m and a design load of 4KN/m2Therefore, the ultimate load value is:
L×X×4KN/m2×A＝3×2×4×1.2＝28.8KN
the coefficient A is: safety factor 1.2
1.3 alarm threshold of monitoring System
As described above; because the rod pieces at each part of the creeping formwork frame body are different in layout and material performance and the ultimate bearing capacity is different, the ultimate stress values are treated differently, and the ultimate bending moment position ultimate value (Y) of the stacking layer cross beam is differentmax) Comprises the following steps: 69.7MPa, the maximum stress of the vertical support beam of mould internal model windrow of creeping formwork support body and bracing is respectively: 14.2MPa and 1.9MPa, the monitoring system can input corresponding limit values according to each monitoring part, and the monitoring value (Y) exceeds the limit value (Y)max) The system sends out an alarm.
Namely: y is>Ymax
2. Climbing formwork support body construction environment temperature and wind speed monitoring
2.1 ambient temperature:
T＝1/[A+B(Lnm10)+C(Lnm10)3]-273.2
wherein: a 1.4051 × 10-3；B＝2.369×10-4；C＝1.019×10-7(ii) a Are all sensor coefficients
2.2 ambient wind speed:
F＝K(I1-I0)+C
wherein: k is 2.5; i is1、I2A current measured value and an initial measured value; c is a constant
According to the method, the monitoring platform compares the current monitoring value with the limit value, and when the wind speed monitoring value F is larger than 7 m/s; when the temperature T is higher than 36 ℃, the platform gives an alarm.
3. Shelf Tilt analysis
Mounting the inclination angle sensor at a position ② of a frame rod member through the leveling support, wherein an X axis faces the north-south direction of the frame body and a Y axis faces the east-west direction of the frame body as shown in figure 2;
Qx＝K(I1-I0)+C
QY＝K(I2-I0)+C
wherein: k is 0.266; i is0An initial reading for the sensor; i is1、I2Respectively the current readings of the X axis and the Y axis; c is a constant to illustrate: x axis "-" indicates the rack is tilted south and "+" indicates the tilt north;
y-axis "-" indicates that the rack is tilted westward and "+" indicates that it is tilted eastward;
3. the limit value is calculated as five thousandths of a slope.
From the above, when the monitored value is Qx>0.287°QY>Send out early warning at 0.287 DEG
4. Frame synchronization monitoring analysis
The static levels are respectively arranged at ⑤ th positions of each unit frame body, the model is KYDM-F, the maximum allowable error is plus or minus 0.02%, the static levels of each frame body are connected in series by adopting a communication principle, and the synchronism among the sections of the frame bodies under different working conditions is monitored.
5. Caudal axial force monitoring and analysis
The caudal vertebra axial force monitoring points are respectively arranged between each truss body caudal vertebra and the building body as shown in figure 2: and 6, monitoring the acting force of the frame tail cone on the main building structure in real time at the node position, and designing the combination of live load, horizontal load and template load under the full-load working condition. The diagonal bracing rod piece is pressed by 117314N, the area of the rod piece is 2.035E-03m2, and the pressure of the rod piece is 57.7 MPa. Calculating a horizontal support reaction force (F) from the geometric relationshipMax) At 7.23t, as currently monitored value F1>FMaxThe monitoring system will send out alarm to the on-site alarm lamp and the manager.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The utility model provides a hydraulic pressure is high in clouds automatic monitoring system for creeping formwork which characterized in that: at least comprises the following steps:
a data acquisition module, the data acquisition module comprising: the system comprises a stress sensor and a cantilever beam weighing sensor for acquiring stress information of each part of a hydraulic creeping formwork frame body, an inclination angle sensor for acquiring an inclination angle of the hydraulic creeping formwork frame body, an acceleration sensor for acquiring the movement speed of the hydraulic creeping formwork frame body, a static level for acquiring the synchronism of the hydraulic creeping formwork frame body under different working conditions, an annular axial force sensor for acquiring the stress condition between a tail cone of the hydraulic creeping formwork frame body and a wall body, and an air speed sensor for acquiring the field working condition of the hydraulic creeping formwork frame body;
the data transmission module comprises a multi-channel automatic data acquisition instrument and an Internet of things; the multichannel automatic data acquisition instrument receives output data of the data acquisition module and sends the output data to the Internet of things;
the monitoring terminal comprises terminal equipment for data interaction with the Internet of things and a monitoring system installed on the terminal equipment.
2. The automatic monitoring system in high in clouds for hydraulic climbing formwork of claim 1, characterized in that: and a temperature sensor is arranged in the stress sensor and sends collected data to the multi-channel automatic data collector.
3. The automatic monitoring system in high in clouds for hydraulic climbing formwork of claim 1, characterized in that: the terminal equipment comprises a computer, a mobile phone and an alarm.
4. The automatic monitoring system in high in clouds for hydraulic climbing formwork of claim 1, characterized in that: the data acquisition module carries out data interaction with the data display module, and the data display module carries out data interaction with the Internet of things.
5. The automatic monitoring system in high in clouds for hydraulic climbing formwork of claim 1, characterized in that: an acrylic protective shell is arranged on the outer side of each sensor of the data acquisition module.
6. The automatic monitoring system in high in clouds for hydraulic climbing formwork of claim 1, characterized in that: the model of the wind speed sensor is FC-5S.
7. The automatic monitoring system in high in clouds for hydraulic climbing formwork of claim 1, characterized in that: the tilt sensor is a TLS526T type double-shaft tilt sensor.
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| CN111535570A (en) * | 2020-05-12 | 2020-08-14 | 上海建工一建集团有限公司 | Monitoring system and method for cantilever type externally-hung protective frame |
| CN111879445A (en) * | 2020-07-16 | 2020-11-03 | 南昌航空大学 | Remote intelligent stress monitoring system based on alternating current electromagnetic field stress measurement method |
| CN112255938A (en) * | 2020-09-21 | 2021-01-22 | 中铁七局集团有限公司 | Intelligent detection control system for high pier hydraulic creeping formwork |
| CN113062626A (en) * | 2021-03-15 | 2021-07-02 | 汤谷科技发展(天津)股份有限公司 | 5G intelligent disassembly building construction auxiliary system |
| CN113340344A (en) * | 2021-05-27 | 2021-09-03 | 中国建筑第四工程局有限公司 | Hydraulic climbing mould intelligent monitoring control early warning system based on digital twin technology |
| CN113472851A (en) * | 2021-05-27 | 2021-10-01 | 中交天津港湾工程研究院有限公司 | Automatic monitoring management system for immersed tube tunnel cloud |
| CN115653334A (en) * | 2022-10-25 | 2023-01-31 | 中国建筑第二工程局有限公司 | Concrete spraying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115653334A (en) * | 2022-10-25 | 2023-01-31 | 中国建筑第二工程局有限公司 | Concrete spraying system |
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Application publication date: 20200410 |