CN114061879A - High formwork system stability detection early warning method and device - Google Patents
High formwork system stability detection early warning method and device Download PDFInfo
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Abstract
The invention is suitable for the technical field of building construction safety detection, and provides a high formwork system stability detection early warning method and a device, wherein the method comprises the following steps: applying gradually increased horizontal tensile load to the rod member nodes of the high formwork support body; releasing the horizontal tension load when the horizontal tension load reaches a first threshold value; collecting vibration modal information of the high formwork support body after the horizontal tension load is released, and obtaining a vibration displacement frequency curve of the high formwork support body; judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, and outputting a detection result; if yes, issuing early warning; if not, continuing to collect the vibration mode information of the high formwork support body after the horizontal tension load is released; this embodiment can detect whether high formwork support body holistic stability is qualified through the real-time vibration mode of monitoring high formwork support body, masters the safe condition of high formwork system, and detection range is wide.
Description
Technical Field
The invention belongs to the technical field of building construction safety detection, and particularly relates to a high formwork system stability detection early warning method and device.
Background
With the rapid development of the urban modernization process, large-span structures and ultrahigh building structures in cities gradually increase, and the application of a high formwork system in the engineering field is more and more extensive. The high and large formwork support system is referred to as a high formwork support system for short, the height of the concrete member formwork support system is 8m or more, or the formwork support system with the span of 18m or more is erected, and the high and large formwork support system belongs to a subsection project with larger danger beyond a certain scale. The high formwork supporting engineering has the characteristics of complexity, high risk, accident outburst and the like. The main reasons of collapse safety accidents of high formwork support are manifold, wherein the high formwork support is not erected in a standard manner, the foundation of the support is settled, the distance between vertical rods is too large, the quality defects of materials such as steel pipe rods, fasteners and jacking in the support, insufficient tightening torque of the fasteners and bolts can cause the failure of the support frame members of the high formwork support, local collapse or overall instability occurs, and the serious safety quality accidents of casualties of field operation personnel and economic and property loss occur.
In order to avoid the dangerous situation, methods such as monitoring high formwork settlement and displacement are generally adopted to ensure the smooth operation of high formwork construction. Compared with the traditional contact displacement meter measurement method, the laser-based non-contact displacement monitoring method has the characteristics of high sampling frequency and quick response, but the monitoring method still has defects; the monitoring range of one set of single monitoring devices has limitations, a large number of monitoring devices need to be arranged on the high formwork support body for real-time monitoring, and the high formwork engineering cost is increased to a great extent.
In view of the above, it is desirable to provide a method for detecting stability of a high formwork system and an early warning device.
Disclosure of Invention
The embodiment of the invention aims to provide a high formwork system stability detection early warning method, aiming at solving the problems that the monitoring range of the existing detection method is limited and the construction cost of a monitoring device is high;
the embodiment of the invention is realized in such a way that a high formwork system stability detection early warning method comprises the following steps: applying gradually increased horizontal tensile load to the rod member nodes of the high formwork support body; releasing the horizontal tension load when the horizontal tension load reaches a first threshold value; collecting vibration modal information of the high formwork support body after the horizontal tension load is released, and obtaining a vibration displacement frequency curve of the high formwork support body; judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, and outputting a detection result; if yes, issuing early warning; if not, continuing to collect the vibration mode information of the high formwork support body after the horizontal tension load is released;
another objective of an embodiment of the present invention is to provide a device for detecting stability of a high formwork system, where the device includes: a force application component, a sensor group and an analysis processing end connected with the sensor group,
the force application assembly is arranged on one side of the high formwork support body and is used for applying gradually increased horizontal tensile load to the rod piece node of the high formwork support body;
the sensor group is arranged opposite to the high formwork support body and used for collecting vibration mode information of the high formwork support body after the horizontal tension load is released;
the analysis processing end is used for obtaining a vibration displacement frequency curve of the high formwork support body according to the vibration modal information collected by the sensor group, judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, outputting a detection result according to the judgment result and issuing an early warning.
The invention provides a high formwork system stability detection early warning method, which is characterized in that a horizontal tension load is actively applied to a top layer rod piece node of a high formwork support body, the horizontal tension load is uniformly and slowly increased, when the horizontal tension load pulls the horizontal displacement of the top layer of the support body to reach a certain limit value, the horizontal tension load is suddenly released, and by monitoring the real-time vibration mode of the high formwork support body, the method can detect whether the overall stability of the high formwork support body is qualified or not, master the safety condition of the high formwork system, only needs to arrange a load loading mechanism and a detection mechanism relative to the high formwork support body, has wide detection range and low cost, can apply force to only one rod piece node to realize the application of the load, has simple structure, few installation, detection processes and steps, simple and convenient data processing, does not need to arrange a plurality of detection devices on the high formwork support body, the detection cost is low; the accident probability of a high formwork system can be effectively reduced; secondly, the real-time vibration mode of the high formwork support body after the horizontal tension load is released can be monitored and recorded, the vibration displacement frequency curve of the high formwork support body is obtained and compared with the finite element software analysis result, the stability of the high formwork support body is judged, and the countermeasure is taken according to the actual result, so that the safety and the stability of the whole high formwork system are ensured; and thirdly, when the amplitude of the vibration displacement frequency curve of the high formwork support body is judged to exceed the limit value, the early warning mode is started, early warning information is transmitted, surrounding workers are reminded to stop working and emergently evacuate, and major accidents and property loss are effectively avoided.
Drawings
Fig. 1 is a flowchart of a method for detecting and warning stability of a high formwork system according to an embodiment of the present invention;
FIG. 2 is a graph of vibration displacement frequency in one embodiment provided by the present invention;
fig. 3 is a schematic structural diagram of a high formwork system stability detection apparatus according to an embodiment of the present invention;
fig. 4 is a front view of a high formwork system stability detection apparatus provided in an embodiment of the present invention;
FIG. 5 is a front view of another high formwork system stability detection apparatus provided in the embodiment of the present invention;
in the drawings: 101-high formwork cross bar; 102-high formwork erecting rods; 201-steel wire rope; 202-a pulley block support; 203-horizontal tensile machine; 204-a pulley; 301-a telescoping member; 302-distance sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1, a work flow chart of a high formwork system stability detection and early warning method according to an embodiment of the present invention is provided, where the method includes the following steps: applying gradually increased horizontal tensile load to the rod member nodes of the high formwork support body; releasing the horizontal tension load when the horizontal tension load reaches a first threshold value; collecting vibration modal information of the high formwork support body after the horizontal tension load is released, and obtaining a vibration displacement frequency curve of the high formwork support body; judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, and outputting a detection result; if yes, issuing early warning; if not, continuing to collect the vibration mode information of the high formwork support body after the horizontal tension load is released;
in the embodiment of the invention, before the high formwork supporting project starts, a horizontal tension load is actively applied to a top layer rod piece node of a built high formwork supporting frame body, the horizontal tension load is increased at a constant speed and slowly, when the horizontal tension load pulls the horizontal displacement of the top layer of the frame body to reach a certain limit value, the horizontal load is suddenly released, whether the stability of the whole high formwork supporting frame body is qualified or not is detected by monitoring the real-time vibration mode of the high formwork supporting frame body, the safety condition of the high formwork supporting system is mastered, and the accident probability of the high formwork supporting project is effectively reduced; moreover, by monitoring and recording the real-time vibration mode of the high formwork support body after the horizontal tension load is released, the vibration displacement frequency curve of the high formwork support body is obtained and compared with the analysis result of finite element software, the stability of the high formwork support body is judged, and the countermeasure is made according to the actual result, so that the safety and the stability of the whole high formwork support system are ensured; the probability of accidents of the high formwork supporting engineering is effectively reduced, and the hidden problem of the high formwork supporting frame body is found out fundamentally; when the comparison result is unsatisfactory, namely when the detection result judges that the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds the limit value, the early warning mode can be started, and early warning information is transmitted to remind surrounding workers to stop working and evacuate emergently, so that major accidents and property loss are effectively avoided.
In one embodiment of the present invention, the horizontal displacement thereof reaching a certain limit value can be flexibly set according to different high formwork systems; the first threshold is a constant value, and specifically includes: and when the horizontal tension load pulls the horizontal displacement of the top layer of the high formwork support body to reach a certain limit value, the load value is applied to the rod piece node of the high formwork support body. The high formwork support bodies in this embodiment are arranged in 5-span × 5-step manner as shown in fig. 3, the vertical distance of the high formwork upright rods 102 is 1.8m, the transverse distance is 1.8m, and the step distance of the high formwork cross rods 101 is 1.5 m. Finite element software analysis result be according to the high formwork support body structure that awaits measuring, as above-mentioned: the method comprises the following steps that (1) the vertical distance of a high formwork upright rod 102 is 1.8m, the transverse distance is 1.8m, the step distance of a high formwork cross rod 101 is 1.5m, a model is built in finite element software, the model is applied with the same horizontal tensile load as the actual measurement, the vibration of a high formwork support body is simulated, the vibration mode analysis is carried out, the vibration displacement frequency curve of the simulated high formwork support body is obtained and used as the finite element analysis result, the vibration displacement frequency curve of the actually measured high formwork support body is compared, and then the stability condition of the high formwork support body is judged; the detection range is wide, and the construction cost of the detection device is low. The finite element software may be ANSYS 18.0, or ABAQUS 2016.
As shown in fig. 1 and fig. 2, as a preferred embodiment of the present invention, the gradually increasing horizontal tensile load is increased at a constant speed;
in the embodiment, the horizontal tension load is increased at a constant speed, so that data processing is facilitated, and meanwhile, when finite element analysis is performed, the configuration of the model is simpler and more convenient;
in some scenes, the gradually increased horizontal tensile load can also be increased in a variable speed manner, and the vibration displacement of the whole high formwork support body when the top layer of the high formwork support body bears the impact can be simulated by increasing the horizontal tensile load in a variable speed manner; and then carrying out vibration mode analysis to obtain a vibration displacement frequency curve simulating the high formwork support body, and comparing the vibration displacement frequency curve of the actually measured high formwork support body as a finite element analysis result so as to judge the stability of the high formwork support body.
As shown in fig. 1, as a preferred embodiment of the present invention, the determining whether the amplitude of the vibration displacement frequency curve of the high formwork body exceeds the amplitude limit value includes:
establishing a finite element model of a high formwork support body to be tested;
applying a simulated horizontal tension load at the rod piece node of the top layer of the high formwork support body in the finite element model, and gradually increasing the simulated horizontal tension load;
releasing the simulated horizontal tensile load when the simulated horizontal tensile load reaches a first threshold value so as to simulate the vibration of the high formwork support body through software, and carrying out vibration modal analysis to obtain a finite element analysis result;
wherein the finite element analysis result comprises a vibration displacement frequency curve simulating a high formwork support body;
comparing the obtained vibration displacement frequency curve of the high formwork support body with a finite element analysis result, judging whether the amplitudes of the vibration displacement frequency curve of the high formwork support body and the finite element analysis result exceed a limit value or not, and outputting a detection result;
as shown in fig. 2, a graph of vibration displacement frequency, i.e. a graph of time versus horizontal displacement, in the embodiment, the output detection result is divided into:
the obtained vibration displacement frequency curve of the high formwork support body has a similar trend with the finite element analysis result, namely the change of the curve b is similar, and the output detection result is that the stability of the high formwork support body is qualified;
if the obtained vibration displacement frequency curve of the high formwork support body is under the finite element analysis result, namely the change of the curve c is similar, outputting the detection result that the erection of the high formwork support body is not standard or has quality defects;
and if the obtained vibration displacement frequency curve of the high formwork support body is above the finite element analysis result, namely the change of the curve a is similar, outputting a detection result that the stability of the high formwork support body is unqualified.
In this embodiment, the setting up of high formwork support body is not standard or there is quality defect to reflect that the quality defect scheduling problem of materials such as high formwork support body member pole piece leads to there being the clearance problem between the high formwork support body member pole piece at high formwork support body setting up nonstandard, support body ground emergence subside, high formwork pole setting interval is too big, steel pipe member pole piece, fastener, top support in the support. And when the detection result is that the stability of the high formwork support body is unqualified, the problems can be further detected and checked, and the problem of ensuring the safety and the reliability of the high formwork support body is solved.
To sum up, its monitoring range of single one set of monitoring devices that this embodiment can solve current building safety detection has the limitation, monitoring devices's installation is complicated, is unsuitable as the high formwork of interim support system and uses, reduces the limited problem of the probability that dangerous emergence to and only carry out the performance to a certain single component of high formwork support body and detect, test the vertical limit bearing capacity of high formwork support body, do not relate to the problem of the detection of high formwork support body overall stability. Before a high formwork supporting project starts, a horizontal tensile load is actively applied to a top layer rod piece node of a built high formwork supporting frame body, the horizontal tensile load is increased at a constant speed and slowly, when the tensile load pulls the horizontal displacement of the top layer of the frame body to reach a certain limit value, the horizontal load is suddenly released, and a real-time vibration mode of the high formwork supporting frame body is monitored through an acceleration sensor to detect whether the overall stability of the high formwork supporting frame body is qualified or not, (1) the safety condition of the high formwork supporting system can be mastered in real time, the probability of high formwork supporting project accidents is effectively reduced, and the hidden problem of the high formwork supporting frame body is found out fundamentally; (2) by monitoring and recording the real-time vibration mode of the high formwork support body after the horizontal tension load is released, acquiring a vibration displacement frequency curve of the high formwork support body and comparing the vibration displacement frequency curve with a finite element software analysis result, judging the stability of the high formwork support body, and taking a countermeasure against an actual result to ensure the safety and stability of the whole high formwork support system; (3) when the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds a limit value, the early warning mode is started, an early warning signal is transmitted to the alarm, the alarm sends out a buzzing alarm sound and starts warning light to remind surrounding workers to stop working and evacuate emergently, and major accidents and property loss are effectively avoided.
As shown in fig. 3 and 4, an embodiment of the present invention further provides a high formwork system stability detection apparatus, which is used in the high formwork system stability detection and early warning method, and the apparatus includes: a force application component, a sensor group and an analysis processing end connected with the sensor group,
the force application assembly is arranged on one side of the high formwork support body and is used for applying gradually increased horizontal tensile load to the rod piece node of the high formwork support body;
the sensor group is arranged opposite to the high formwork support body and used for collecting vibration mode information of the high formwork support body after the horizontal tension load is released;
the analysis processing end is used for obtaining a vibration displacement frequency curve of the high formwork support body according to the vibration modal information collected by the sensor group, judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, outputting a detection result according to the judgment result and issuing an early warning.
In the embodiment, the sensor group comprises a plurality of acceleration sensors, and the acceleration sensors can be arranged on the force application assembly or on an external structure and are arranged opposite to the high-support formwork body; the force application assembly and the sensor group are convenient to set up, can be set up on site, can also be pre-set up, and then are moved to the side of the high formwork support body to be detected, and only the force application assembly and the rod member node on the top layer of the high formwork support body need to be connected and fixed, and the force application assembly and the rod member node on the top layer of the high formwork support body are kept at the same horizontal height position, so that the horizontal tension load is conveniently applied; the whole structure is simple, and the building is convenient. The horizontal tension load is set to be uniform and slowly increased, when the horizontal tension load pulls the horizontal displacement of the top layer of the high formwork support body to reach a certain limit value, the horizontal tension load is suddenly released, and a vibration displacement frequency curve of the high formwork support body after the horizontal tension load is released is monitored and recorded through an acceleration sensor; when the analysis processing end judges that the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds a limit value, the early warning mode is started, and early warning information is transmitted.
In the embodiment of the invention, the high formwork system stability detection and early warning method can be implemented by the high formwork system stability detection device, so that the detection and early warning of the stability of the high formwork support body can be realized; the device is simple in integral structure, convenient to build and capable of being rapidly arranged during detection; horizontal tension load is initiatively exerted through the top layer member node to the high formwork support body that has set up after the overall arrangement, horizontal tension load is at the uniform velocity and slowly increases, when the horizontal displacement of tension load pulling support body top layer reached certain limiting value, the horizontal load of sudden release, the real-time vibration mode through acceleration sensor monitoring high formwork support body, whether it is qualified to detect the holistic stability of high formwork support body, and then use for the epilogue of high formwork support body and provide reference and foundation, if to the hidden problem of high formwork support body, the investigation of slight problem, improvement and promotion etc. to the stability of high formwork support body.
In a scenario of this embodiment, when the horizontal displacement of the top layer of the rack body pulled by the horizontal tensile load reaches a certain limit value, the horizontal tensile load is suddenly released, specifically, the horizontal tensile load is increased slowly from zero at a constant speed, and when the horizontal displacement of the top layer of the rack body pulled by the horizontal tensile load reaches eighty percent of the limit value, the horizontal tensile load is suddenly released.
As shown in fig. 3, as a preferred embodiment of the present invention, the force application assembly includes a pulley block bracket 202, a flexible connecting member and a traction member, wherein one end of the flexible connecting member is connected to the traction member, and the other end of the flexible connecting member passes through a plurality of pulleys 204 provided on the pulley block bracket 202 and extends horizontally to a rod member node at the top layer of the high-branch formwork body to be connected and fixed to the rod member node.
The pulley block support is built into a tripod structure by a plurality of rod pieces, a plurality of pulleys 204 are installed at the bottom and the top of the tripod structure, and the pulleys 204 positioned at the top of the tripod structure are flush with the top layer of the high formwork support body, so that the flexible connecting piece horizontally extends to the node of the rod piece at the top layer of the high formwork support body;
specifically, the pulley block comprises three fixed pulleys, wherein one fixed pulley is fixed above the pulley block bracket and is positioned at the same horizontal height position with a node of a rod piece at the top layer of the high formwork support body subjected to horizontal tensile load; the other two fixed pulleys are fixed below the pulley block bracket and are positioned at the same horizontal height position with the horizontal tensile machine, so that the force applied to the steel wire rope by the horizontal tensile machine is ensured to be a horizontal load.
The traction piece adopts a horizontal tensile machine 203, and the horizontal tensile machine 203 is arranged on one side of the force application assembly, which is far away from the high formwork support body, and is used for drawing the flexible connecting piece or instantly releasing the flexible connecting piece;
as shown in fig. 5, as another embodiment of the present invention, the present invention further includes a height self-adjusting structure, where the height self-adjusting structure at least includes a telescopic member 301 and a distance sensor 302, a plurality of telescopic members 301 are arranged at the bottom of the tripod structure in parallel, the distance sensor 302 is arranged at the top of the tripod structure, the telescopic member 301 is used to drive the tripod structure to lift, and the distance sensor 302 is used to measure the parallelism between the top of the tripod structure and the top layer of the high-branch formwork body, and control the telescopic member to stop extending when the parallelism reaches a set value;
in this embodiment, the telescopic members 301 are electric telescopic rods, and four electric telescopic rods are arranged at the bottom of the tripod structure in parallel and electrically connected to the driver of the distance sensor 302. When the tripod structure is built, the parallelism between the top of the tripod structure and the top layer of the high formwork support body is possibly not 0 degrees, and at the moment, in order to ensure that the tensile load applied to the node of the top layer of the high formwork support body by the steel wire rope is in the horizontal direction, the height of the tripod structure needs to be adjusted; the four electric telescopic rods are adjusted in a telescopic mode; thereafter, when the distance sensor 302 measures that the parallelism between the top of the tripod structure and the top layer of the high formwork support body is 0 °, that is, when the distance sensor 302 measures that the distance between the top of the tripod structure and the top layer of the high formwork support body is equal to the distance between the bottom of the tripod structure and the bottom of the high formwork support body; the driver stops working, and transmits an electric signal to the electric telescopic rod to control the electric telescopic rod to stop stretching; in some scenes, the height self-adjusting structure further comprises a plurality of balancing weights, and the balancing weights are detachably mounted at the bottom of the tripod structure and used for adjusting the gravity center of the tripod structure and improving the stability of the tripod structure.
In the embodiment, the high self-adjusting structure automatically realizes the building and adjustment of the tripod structure, and the height of the tripod structure can be kept to the same degree as that of the high formwork support body through the measurement of the distance sensor, so that the tension load applied by the steel wire rope is ensured to be horizontal; facilitating subsequent measurements.
As shown in fig. 1, as a preferred embodiment of the present invention, the analysis processing end includes an alarm and a microcomputer, and the microcomputer performs finite element analysis and data processing collected by the sensor group through pre-installed software to determine whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value, and outputs a detection result according to the determination result and issues an early warning through the alarm.
In the embodiment, the pulley block support is built into a tripod structure, so that the stress is stable, fewer rod pieces are required, and the building cost is low; the flexible connecting piece can adopt a steel wire rope 201 with higher tensile strength, fatigue resistance and impact toughness, and the tensile load between the high formwork support body and the horizontal tensile machine 203 is transmitted through the steel wire rope 201; the carbon fiber rope with higher tensile strength, fatigue resistance and impact toughness can also be adopted, and the software preinstalled by the microcomputer is a set of monitoring management system and finite element analysis software; the monitoring management system is a system matched with the acceleration sensor, has an automatic data acquisition function, is used for monitoring and storing real-time vibration data of each region of the high formwork support body, and when the monitoring management system judges that the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds a limit value, an early warning mode is started, and an early warning signal is transmitted to the alarm so as to facilitate the response measures.
In the embodiment of the invention, the alarm can adopt an audible and visual alarm or an alarm lamp, and has the audible and visual alarm function.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A high formwork system stability detection early warning method is characterized by comprising the following steps:
applying gradually increased horizontal tensile load to the rod member nodes of the high formwork support body;
releasing the horizontal tension load when the horizontal tension load reaches a first threshold value;
collecting vibration modal information of the high formwork support body after the horizontal tension load is released, and obtaining a vibration displacement frequency curve of the high formwork support body;
judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, and outputting a detection result; if yes, issuing early warning; and if not, continuing to collect the vibration mode information of the high formwork support body after the horizontal tension load is released.
2. The method for detecting the stability of a high formwork system according to claim 1, wherein the gradually increasing horizontal tensile load is increased at a constant speed.
3. The method for detecting and warning the stability of the high formwork system according to claim 1, wherein the step of judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value comprises the following steps:
establishing a finite element model of a high formwork support body to be tested;
applying a simulated horizontal tension load at the rod piece node of the top layer of the high formwork support body in the finite element model, and gradually increasing the simulated horizontal tension load;
releasing the simulated horizontal tensile load when the simulated horizontal tensile load reaches a first threshold value so as to simulate the vibration of the high formwork support body through software, and carrying out vibration modal analysis to obtain a finite element analysis result;
wherein the finite element analysis result comprises a vibration displacement frequency curve simulating a high formwork support body;
and comparing the obtained vibration displacement frequency curve of the high formwork support body with the finite element analysis result, judging whether the amplitudes of the vibration displacement frequency curve of the high formwork support body and the finite element analysis result exceed a limit value, and outputting a detection result.
4. The method for detecting the stability of the high formwork system according to claim 3, wherein the output detection result is divided into:
the obtained vibration displacement frequency curve of the high formwork support body and the finite element analysis result show similar trend, and the detection result is output to be qualified in stability of the high formwork support body;
outputting a detection result that the erection of the high formwork support body is not standard or has quality defects if the obtained vibration displacement frequency curve of the high formwork support body is below a finite element analysis result;
and if the obtained vibration displacement frequency curve of the high formwork support body is above the finite element analysis result, outputting a detection result that the stability of the high formwork support body is unqualified.
5. A device for detecting stability of a high formwork system, which is used in the method for detecting stability of a high formwork system according to any one of claims 1 to 4, the device comprising: a force application component, a sensor group and an analysis processing end connected with the sensor group,
the force application assembly is arranged on one side of the high formwork support body and is used for applying gradually increased horizontal tensile load to the rod piece node of the high formwork support body;
the sensor group is arranged opposite to the high formwork support body and used for collecting vibration mode information of the high formwork support body after the horizontal tension load is released;
the analysis processing end is used for obtaining a vibration displacement frequency curve of the high formwork support body according to the vibration modal information collected by the sensor group, judging whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value or not, outputting a detection result according to the judgment result and issuing an early warning.
6. The apparatus for testing stability of a high formwork system according to claim 5, wherein the force applying assembly comprises a pulley block support, a flexible connecting member and a pulling member, wherein one end of the flexible connecting member is connected to the pulling member, and the other end of the flexible connecting member passes over a plurality of pulleys provided on the pulley block support and extends horizontally to a rod member node on the top layer of the high formwork support to be connected and fixed to the rod member node.
7. The apparatus for detecting stability of a high formwork system according to claim 6, wherein the pulley block support is constructed by a plurality of rods to form a tripod structure, a plurality of pulleys are installed at the bottom and the top of the tripod structure, and the pulley at the top of the tripod structure is flush with the top layer of the high formwork body, so that the flexible connecting member horizontally extends to the node of the rod at the top layer of the high formwork body.
8. The high formwork system stability detection device according to claim 6 or 7, wherein the traction member is a horizontal pulling machine, and the horizontal pulling machine is arranged on one side of the force application assembly away from the high formwork support body and is used for drawing the flexible connecting member or instantly releasing the flexible connecting member.
9. The apparatus according to claim 7, further comprising a height self-adjusting structure, wherein the height self-adjusting structure at least comprises an expansion piece and a distance sensor, the expansion piece is disposed at the bottom of the tripod structure in parallel, the distance sensor is disposed at the top of the tripod structure, the expansion piece is used for driving the tripod structure to ascend and descend, and the distance sensor is used for measuring the parallelism between the top of the tripod structure and the top layer of the high-support formwork body and controlling the expansion piece to stop expanding and contracting when the parallelism reaches a set value.
10. The device for detecting the stability of the high formwork system according to claim 5, wherein the analysis processing end comprises an alarm and a microcomputer, the microcomputer performs finite element analysis and data processing collected by the sensor group through pre-installed software to judge whether the amplitude of the vibration displacement frequency curve of the high formwork support body exceeds an amplitude limit value, and outputs a detection result according to the judgment result and issues an early warning through the alarm.
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