CN113513052A - BDS + BIM-based intelligent foundation pit monitoring system and method - Google Patents
BDS + BIM-based intelligent foundation pit monitoring system and method Download PDFInfo
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Abstract
本发明公开了一种基于BDS+BIM的基坑智能监测系统及监测方法，系统包括包括北斗定位监测终端、数据处理存储模块、传感器模块、BIM模型模块、无线数据传输模块、基坑信息模块、预报预警模块和预警接收设备；传感器模块布设在待测基坑的监测点上；基坑信息模块中含有基坑图纸、围护结构设置及基坑周围工程地质资料信息；本发明在传统深基坑监测中引入北斗卫星导航定位技术和BIM技术，结合现代无线传输技术，建立了深基坑位移智能监测系统，实现了对深基坑的全天候高精度自动监测和三维可视化展示，更便于管理人员了解基坑的情况，提高了深基坑工程施工的安全保障，同时减少了人力物力，降低了工程造价。
The invention discloses a foundation pit intelligent monitoring system and monitoring method based on BDS+BIM. The system includes a Beidou positioning monitoring terminal, a data processing and storage module, a sensor module, a BIM model module, a wireless data transmission module, a foundation pit information module, Forecast and early warning module and early warning receiving equipment; the sensor module is arranged on the monitoring point of the foundation pit to be tested; the foundation pit information module contains the foundation pit drawings, the setting of the enclosure structure and the engineering geological data information around the foundation pit; Beidou satellite navigation and positioning technology and BIM technology are introduced into pit monitoring, combined with modern wireless transmission technology, an intelligent monitoring system for deep foundation pit displacement is established, which realizes all-weather high-precision automatic monitoring and 3D visual display of deep foundation pits, which is more convenient for managers. Knowing the situation of the foundation pit improves the safety of the deep foundation pit construction, reduces the manpower and material resources, and reduces the project cost.
Description
Technical Field
The invention relates to the technical field of building foundation pit monitoring, in particular to a BDS + BIM-based foundation pit intelligent monitoring system and a BDS + BIM-based foundation pit intelligent monitoring method.
Background
The foundation pit engineering monitoring means that in the construction and use stages of the building foundation pit, the measures and methods such as instrument measurement and field inspection are adopted to carry out regular or continuous inspection, measurement and monitoring, data acquisition, analysis and feedback activities on the safety condition, change characteristics and development trend of the foundation pit and the surrounding environment. In recent years, with the rapid development of urban construction, especially the rapid development of high-rise buildings, super high-rise buildings, civil air defense buildings and underground engineering, the number of deeper and larger foundation pits is increasing. Because the engineering accidents caused by the engineering damage of the deep foundation pit are more and more, serious life and property loss is caused, and the safety of the foundation pit engineering is more and more valued by people. The engineering damage of the deep foundation pit is mainly caused by the damage of a part or the whole of a foundation pit enclosure system, and finally, engineering accidents occur. The following problems and disadvantages mainly exist in the traditional monitoring means such as instrument measurement and field inspection or the existing monitoring system: firstly, the automation degree of the monitoring process is low, the monitoring result is unstable, the precision is not high, a large amount of manpower and material resources are consumed, the monitoring timeliness is low, and the danger early warning is not timely enough; secondly, the monitoring result is basically in a plane display system stage, the visualization degree is low, and the monitoring information cannot be well displayed in the system; thirdly, the traditional monitoring system does not effectively integrate and manage various monitoring data and engineering information, and the information sharing performance is poor; therefore, the requirements of engineering monitoring of deep and large foundation pits cannot be well met. In order to ensure the safety of deep foundation pit engineering, how to develop a monitoring system and a method with high automation, strong timeliness and good sharing performance becomes a difficult problem which needs to be solved urgently in the deep foundation pit engineering field.
The Beidou Satellite Navigation system BDS (BeiDou Navigation Satellite System) is a self-developed global Satellite Navigation system in China, and can provide high-precision, high-reliability positioning, Navigation and time service for various users all day long in the world. With the gradual networking of the Beidou satellite navigation system in the world, the application of the Beidou satellite navigation system in deformation monitoring of houses, bridges and roads is more and more extensive. The building Information model bim (building Information modeling) is a building or construction engineering Information model which is composed of sufficient Information to support new product development and management and can be directly interpreted by a computer application program, namely, life cycle management of a building environment supported by a digital technology, and has the characteristics of visualization, harmony, simulation and the like. In recent years, with the continuous support and popularization of the BIM technology in China, more and more companies apply the BIM technology to construction projects.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a BDS + BIM-based intelligent foundation pit monitoring system and a BDS + BIM-based intelligent foundation pit monitoring method, so that continuous monitoring and early warning of a deep foundation pit are realized.
The technical scheme for realizing the purpose of the invention is as follows:
a BDS + BIM-based intelligent foundation pit monitoring system comprises a Beidou positioning monitoring terminal, a data processing and storing module, a sensor module, a BIM model module, a wireless data transmission module, a foundation pit information module, a forecasting and early warning module and early warning receiving equipment; the sensor module is arranged on a monitoring point of the foundation pit to be detected; the foundation pit information module contains information of foundation pit drawings, building enclosure arrangement, engineering geology and other data;
the Beidou positioning monitoring terminal is respectively connected with the sensor module and the data processing and storing module through the wireless data transmission module, and is used for positioning the sensor, monitoring and receiving original monitoring data acquired by the sensor module, transmitting the acquired original monitoring data to the data processing and storing module through the wireless data transmission module, and resolving the original monitoring data by the data processing and storing module to obtain and store monitoring point coordinates;
the BIM model module is respectively connected with the data processing and storing module and the forecasting and early warning module, establishes a foundation pit three-dimensional model through Revit software according to information in the foundation pit information module, sets model reference mark points and monitoring points, acquires coordinates of the monitoring points from the data processing and storing module, guides the coordinates into the BIM model module for optimization, integration and model danger grade judgment, and transmits a judgment result to the forecasting and early warning module; and the forecasting and early warning module receives early warning information sent by the BIM model module and sends the information to early warning receiving equipment.
The Beidou positioning and monitoring terminal comprises Beidou high-precision positioning and monitoring equipment, an independent power module and a measuring antenna; the independent power supply module supplies power to the Beidou high-precision positioning and monitoring device, the Beidou high-precision positioning and monitoring device is in wireless connection with the sensor module, carries out high-precision positioning and real-time monitoring on the sensor, acquires monitoring data of a monitoring point where the sensor is located, and transmits the monitoring data to the data processing and storing module through the wireless data transmission module to carry out coordinate calculation and storage; the independent power supply module adopts an external alternating current power supply or a solar power supply consisting of a battery panel and a storage battery, and the storage capacity of the solar power supply can be continuously used for two weeks by the Beidou high-precision positioning and monitoring equipment so as to ensure that the Beidou high-precision positioning and monitoring equipment normally and stably operates without the alternating current power supply; the measuring type antenna uses an antenna with a choke coil to continuously and stably receive and amplify satellite signals.
The sensor module comprises a displacement sensor and a humidity sensor, wherein the sensor is arranged on a monitoring point arranged in the BIM module and used for monitoring the horizontal displacement and the vertical displacement of the foundation pit support structure and the humidity around the foundation pit.
The model danger level judgment comprises the following steps:
1) in the BIM model module, establishing a foundation pit three-dimensional model by utilizing Revit software according to foundation pit drawings, enclosure structure settings and engineering geological information around the foundation pit in the foundation pit information module in combination with the actual plane arrangement condition on site;
2) according to the established three-dimensional model of the foundation pit, a construction Project schedule is compiled by utilizing Microsoft Project software, construction dynamic simulation is carried out by utilizing Navisthrocks software, sites with good geology and stable terrain are selected as reference mark points of the model by combining with the on-site measurement paying-off condition, monitoring points are arranged and numbered according to the simulated condition, all information of the model is integrated, and three levels of displacement deformation early warning boundary model states are set according to related national safety regulations and actual engineering displacement monitoring early warning requirements;
3) and carrying out coordinate conversion on the monitoring point coordinates transmitted by the data processing and storing module according to the set model reference mark point and displaying the monitoring point coordinates in the model in real time, immediately judging the danger level of the model once one or more received monitoring point coordinates touch the set model early warning boundary, and immediately transmitting corresponding danger signals to the forecasting and early warning module and displaying the danger signals in the foundation pit three-dimensional model.
A monitoring method of a BDS + BIM-based intelligent foundation pit monitoring system comprises the following steps:
step S1: the Beidou positioning and monitoring terminal positions and monitors the sensor module in real time, acquires original monitoring data of the sensor module and transmits the monitoring data to the data processing and storing module;
step S2: the data processing and storing module receives the original monitoring data, calculates the coordinates of the monitoring points through a set carrier phase difference algorithm, and transmits the coordinates to the BIM model module for optimization;
step S3: the BIM model module performs coordinate transformation on the received monitoring point coordinates according to the set model reference mark point and integrates the coordinates into a foundation pit three-dimensional model, performs danger grade judgment according to a preset model danger boundary condition and transmits a judgment result to the forecasting and early warning module;
step S4: and the forecasting and early warning module sends forecasting and early warning information and data of related dangerous items to early warning receiving equipment of corresponding managers according to the received model dangerous signals.
Compared with the prior art, the BDS + BIM-based intelligent foundation pit monitoring system and the monitoring method thereof introduce the Beidou satellite navigation positioning technology and the BIM technology in the traditional deep foundation pit monitoring, combine the modern wireless transmission technology, establish the intelligent deep foundation pit displacement monitoring system, realize all-weather high-precision automatic monitoring and three-dimensional visual display of the deep foundation pit, facilitate managers to know the condition of the foundation pit, improve the safety guarantee of deep foundation pit engineering construction, reduce manpower and material resources and reduce the construction cost.
Drawings
FIG. 1 is a block diagram of a BDS + BIM-based intelligent monitoring system for a foundation pit;
fig. 2 is a flow chart of a monitoring method of the intelligent foundation pit monitoring system based on BDS + BIM.
Detailed Description
The invention will be further elucidated with reference to the drawings and examples, without however being limited thereto.
A BDS + BIM-based foundation pit intelligent monitoring system is shown in figure 1 and comprises a Beidou positioning monitoring terminal, a data processing and storing module, a sensor module, a BIM model module, a wireless data transmission module, a foundation pit information module, a forecast early warning module and early warning receiving equipment; the sensor module is arranged on a monitoring point of the foundation pit to be detected; the foundation pit information module comprises information of foundation pit drawings, building enclosure arrangement, engineering geology around the foundation pit and the like.
The Beidou positioning monitoring terminal is respectively connected with the sensor module and the data processing and storing module through the wireless data transmission module, and is used for positioning the sensor, monitoring and receiving original monitoring data acquired by the sensor module, transmitting the acquired original monitoring data to the data processing and storing module through the wireless data transmission module, and resolving the original monitoring data by the data processing and storing module to obtain and store monitoring point coordinates;
the BIM model module is respectively connected with the data processing and storing module and the forecasting and early warning module, establishes a foundation pit three-dimensional model through Revit software according to information in the foundation pit information module, sets model reference mark points and monitoring points, acquires coordinates of the monitoring points from the data processing and storing module, guides the coordinates into the BIM model module for optimization, integration and model danger grade judgment, and transmits a judgment result to the forecasting and early warning module; and the forecasting and early warning module receives early warning information sent by the BIM model module and sends the information to early warning receiving equipment. The model danger level judgment comprises the following steps:
1) in the BIM model module, establishing a foundation pit three-dimensional model by utilizing Revit software according to foundation pit drawings, enclosure structure setting and engineering geological information around the foundation pit provided by a foundation pit information module and combining the actual plane arrangement condition on site;
2) according to the established three-dimensional model of the foundation pit, a construction Project schedule is compiled by utilizing Microsoft Project software, construction dynamic simulation is carried out by utilizing Navisthrocks software, sites with good geology and stable terrain are selected as reference mark points of the model by combining with the on-site measurement paying-off condition, monitoring points are arranged and numbered according to the simulated condition, all information of the model is integrated, and three levels of displacement deformation early warning boundary model states are set according to related national safety regulations and actual engineering displacement monitoring early warning requirements;
3) and carrying out coordinate conversion on the monitoring point coordinates transmitted by the data processing and storing module according to the set model reference mark point and displaying the monitoring point coordinates in the model in real time, immediately judging the danger level of the model once one or more received monitoring point coordinates touch the set model early warning boundary, and immediately transmitting corresponding danger signals to the forecasting and early warning module and displaying the danger signals in the foundation pit three-dimensional model.
The Beidou positioning and monitoring terminal comprises Beidou high-precision positioning and monitoring equipment, an independent power module and a measuring antenna; the independent power supply module supplies power to the Beidou high-precision positioning and monitoring device, the Beidou high-precision positioning and monitoring device is in wireless connection with the sensor module, carries out high-precision positioning and real-time monitoring on the sensor, acquires monitoring data of a monitoring point where the sensor is located, and transmits the monitoring data to the data processing and storing module through the wireless data transmission module to carry out coordinate calculation and storage; the independent power supply module adopts an external alternating current power supply or a solar power supply consisting of a battery panel and a storage battery, and the storage capacity of the solar power supply can be continuously used for two weeks by the Beidou high-precision positioning and monitoring equipment so as to ensure that the Beidou high-precision positioning and monitoring equipment normally and stably operates without the alternating current power supply; the measuring type antenna uses an antenna with a choke coil to continuously and stably receive and amplify satellite signals.
In the embodiment, the Beidou high-precision positioning and monitoring equipment adopts a Beidou dual-mode dual-frequency receiver; the measuring antenna with the choke coil is adopted to receive and amplify satellite signals, the multipath interference resistance is improved, and the high-wave-transmittance glass fiber antenna protective cover is used outside the antenna, so that the aging speed of the outer surface of the antenna is reduced.
In the embodiment, the data processing and storing module adopts a Beidou carrier phase differential technology, high-precision coordinate calculation of the monitoring points is realized through a carrier phase differential algorithm, the coordinates of the monitoring points are transmitted to the BIM model module for optimization processing, and the coordinates of the monitoring points are stored in the database so as to be called at any time.
The sensor module comprises a displacement sensor and a humidity sensor, wherein the sensor is arranged on a monitoring point arranged in the BIM model module and used for monitoring the horizontal displacement and the vertical displacement of the foundation pit support structure and the humidity around the foundation pit.
In the embodiment, the displacement sensor is bound on the corresponding reinforcement cage according to the monitoring points arranged on the BIM model module, and is embedded on the foundation pit support structure along with the construction of the foundation pit support structure so as to monitor the displacement condition of the foundation pit support structure; the reference mark point of the model is selected at a place with good geology and stable terrain and is not suitable for sedimentation and deformation, so that the stability of the mark point is ensured.
The implementation case is also provided with a humidity sensor to acquire the humidity condition of the foundation pit, and the acquired humidity data is sent to a data processing and storing module to be stored and transmitted to the BIM three-dimensional model along with the coordinates of the monitoring points to be displayed.
A monitoring method of a BDS + BIM-based intelligent foundation pit monitoring system comprises the following steps:
step S1: the Beidou positioning and monitoring terminal positions and monitors the sensor module in real time, acquires original monitoring data of the sensor module and transmits the monitoring data to the data processing and storing module;
step S2: the data processing and storing module receives the original monitoring data, calculates the coordinates of the monitoring points through a set carrier phase difference algorithm, and transmits the coordinates to the BIM model module for optimization;
step S3: the BIM model module performs coordinate transformation on the received monitoring point coordinates according to the set model reference mark point and integrates the coordinates into a foundation pit three-dimensional model, performs danger grade judgment according to a preset model danger boundary condition and transmits a judgment result to the forecasting and early warning module;
step S4: and the forecasting and early warning module sends forecasting and early warning information and data of related dangerous items to early warning receiving equipment of corresponding managers according to the received model dangerous information, wherein the forecasting and early warning information and the data comprise information such as displacement, angle, humidity and the like of a foundation pit monitoring point.
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| CN115235423A (en) * | 2022-04-25 | 2022-10-25 | 广东省建筑设计研究院有限公司 | Existing house safety monitoring terminal and system based on Internet of things |
| CN115758552A (en) * | 2022-12-19 | 2023-03-07 | 桂林电子科技大学 | Building construction monitoring method and monitoring and early warning system based on FEA and BIM |
| CN116233191A (en) * | 2023-03-06 | 2023-06-06 | 中核大地勘察设计有限公司 | Intelligent foundation pit monitoring system |
| CN116261199A (en) * | 2023-03-16 | 2023-06-13 | 湖南经研电力设计有限公司 | Reliability-based power deep foundation pit terminal business data transmission method and system |
| CN117166545A (en) * | 2023-04-23 | 2023-12-05 | 广州市盛通建设工程质量检测有限公司 | Mobile monitoring method and system for subway foundation pit supporting structure |
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| CN117166545A (en) * | 2023-04-23 | 2023-12-05 | 广州市盛通建设工程质量检测有限公司 | Mobile monitoring method and system for subway foundation pit supporting structure |
| CN118114346A (en) * | 2024-03-18 | 2024-05-31 | 北京建工四建工程建设有限公司 | Foundation pit groove bottom paying-off method, device, equipment and storage medium |
| CN118114346B (en) * | 2024-03-18 | 2024-09-17 | 北京建工四建工程建设有限公司 | Foundation pit groove bottom paying-off method, device, equipment and storage medium |
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