CN114134900A - Concrete support servo system and construction monitoring and control method thereof - Google Patents
Concrete support servo system and construction monitoring and control method thereof Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 60
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
Abstract
The application relates to the technical field of foundation pit construction, in particular to a servo system of a concrete support, which comprises a distribution control structure and a data feedback system, wherein the distribution control structure comprises the concrete support arranged between two sides of a foundation pit and a stand column integrally formed on the concrete support, the side wall of the foundation pit comprises an enclosure structure and enclosing purlins arranged on the opposite inner sides of the two enclosure structures, and two ends of the concrete support are respectively abutted against the opposite inner walls of the two enclosing purlins; the data feedback system comprises a data acquisition unit and is mainly used for acquiring monitoring data of the building envelope in real time; the communication module is mainly used for carrying out real-time conversion and transmission on the acquired data; the feedback module receives a feedback result of the foundation pit detection and analysis system and executes automatic adjustment of the servo loading axial force, the whole construction process is compared, monitored and adjusted in real time, manual intervention adjustment is not needed, the response speed is high, adjustment is convenient, and the safety of foundation pit construction is effectively guaranteed.
Description
Technical Field
The application relates to the technical field of foundation pit construction, in particular to a concrete support servo system and a construction monitoring and control method of the system.
Background
In recent years, the development of deep and large foundation pits is becoming a trend in the construction of super high-rise buildings and the development of underground spaces. In soft soil areas, deep and large foundation pits often adopt a support mode of an inner support, and a horizontal inner support in deep foundation pit engineering mainly adopts two modes of a reinforced concrete support and a steel support. The cast-in-place concrete support has the advantages of large overall rigidity, firm joint connection, strong adaptability, high reliability and the like, but the defect that the support axial force cannot be actively adjusted is that the concrete support is large.
In order to solve the defect, a concrete support servo system is adopted to adjust the concrete support axial force, and in the traditional concrete support monitoring process, when monitoring data is abnormal, manual processing is needed. Therefore, in order to guarantee the safety of the foundation pit, all the people need to watch the foundation pit all day round, and aiming at the related technologies, the inventor thinks that the foundation pit has time difference and uncontrollable time when the people monitor the artificial intervention process, so that the safety of the foundation pit cannot be better guaranteed.
Disclosure of Invention
In order to realize real-time monitoring of a foundation pit construction process, automatically adjust a servo loading axial force according to a monitoring result, control deformation of a foundation pit support structure, give full play to a concrete supporting axial force and guarantee construction safety of a deep and large foundation pit, the application provides a concrete supporting servo system and a construction monitoring and control method of the system.
In a first aspect, the application provides a concrete support servo system, which adopts the following technical scheme:
a servo system of a concrete support comprises a distribution control structure and a data feedback system, wherein the distribution control structure comprises the concrete support arranged between two sides of a foundation pit and a stand column integrally formed on the concrete support, the side wall of the foundation pit comprises an enclosure structure and enclosing purlins arranged on the opposite inner sides of the two enclosure structures, and two ends of the concrete support are respectively abutted against the opposite inner walls of the two enclosing purlins;
the data feedback system comprises a data acquisition unit and is mainly used for acquiring monitoring data of the building envelope in real time;
the communication module is mainly used for carrying out real-time conversion and transmission on the acquired data;
and the feedback module is used for receiving a feedback result of the foundation pit detection and analysis system and executing automatic adjustment of the servo loading axial force.
Through adopting above-mentioned technical scheme, in the in-process of foundation ditch construction, gather concrete support axial force in the foundation ditch construction process in real time through data collection station, envelope deflection and envelope and enclose the purlin throw off the volume, thereby data with the monitoring through communication module with data conversion and send to the external foundation ditch detecting system cloud platform and carry out data calculation and compare, when surpassing the alarm value, load the axial force through feedback module this moment, the monitoring adjustment is compared in real time to whole work progress, need not artificial intervention adjustment, response speed is fast, it is convenient to adjust, the security of foundation ditch construction has effectively been ensured.
Optionally, the data collector includes wireless steel bar stressors and wireless displacement sensors, the wireless steel bar stressors are arranged on the concrete supports, the wireless displacement sensors are provided with two, one of the wireless displacement sensors is arranged on the enclosure structure, the other wireless displacement sensor is correspondingly arranged on the enclosing purlin, and the two wireless displacement sensors are arranged on the same side of the foundation pit.
By adopting the technical scheme, the concrete supporting axial force in the foundation pit construction process is monitored through the wireless steel bar stressometer, and the deformation of the enclosure structure and the disengagement between the enclosure structure and the enclosing purlin can be monitored through the wireless displacement sensor, so that the effect of accurate adjustment and control is achieved.
Optionally, the communication module includes an SIM card, a data transceiver and a data modulation and demodulation device, where the data transceiver realizes data conversion through the data modulation and demodulation device, and realizes network connectivity through the SIM card, and transmits the converted data.
Through adopting above-mentioned technical scheme, realize carrying out data transmission with the data of gathering and foundation ditch monitoring system cloud platform to realize realizing the control to loading axle power through foundation ditch detection system cloud platform, through the mode of wireless transmission, reduced laying of cable in traditional foundation ditch monitoring, improved data transmission efficiency.
Optionally, the feedback module comprises a servo active control assembly and a hydraulic oil cylinder, a mounting groove is reserved on the enclosing purlin, the hydraulic oil cylinder is arranged in the mounting groove, and the servo active control assembly is arranged on the enclosing purlin and used for controlling the extension and retraction of a piston rod of the hydraulic oil cylinder.
Through adopting above-mentioned technical scheme, servo active control subassembly is servo oil pump and PLC equipment, compares the back as external foundation ditch monitoring analysis cloud platform with received data, judges whether exceed alarm value, when exceeding alarm value, can feed back the ratio to PLC equipment and judge and control servo oil pump whether to the interior intracavity fuel feeding of hydraulic cylinder control the oil supply volume according to the size of loading axle power simultaneously.
Optionally, the data feedback system further includes a voltage-stabilized power supply and a lightning protection device.
By adopting the technical scheme, the voltage-stabilized power supply reduces the phenomenon that the system generates sudden conditions due to unstable voltage, and meanwhile, the lightning protection equipment is a lightning arrester, so that the safety of electrical equipment in the servo system is further guaranteed.
In a second aspect, the application discloses a construction monitoring and control method of a concrete support servo system, which adopts the following technical scheme:
a construction monitoring and control method of a concrete support servo system comprises the following steps,
step S1, excavating foundation pit earthwork, embedding a wireless steel bar stress meter and a wireless displacement sensor for monitoring the deformation of the enclosure structure, and then pouring concrete to form an enclosing purlin and a concrete support;
step S2, after the strength of the concrete is formed, installing a hydraulic oil cylinder, a servo active control assembly and a wireless displacement sensor for monitoring the separation amount of the enclosure structure and the enclosing purlin;
step S3, the hydraulic oil cylinder carries on the preliminary loading, the wireless monitoring sensor gathers the signal, after processing through the data modulation and demodulation device, transmit to the wireless transceiver of the data, carry on the data transmission to the monitoring analytic system of the foundation ditch;
step S4, the foundation pit monitoring and analyzing system analyzes the data, when the monitored data exceeds the alarm value, the foundation pit monitoring and analyzing system adjusts the loading axial force of the hydraulic oil cylinder according to the monitored data and transmits the instruction to the servo active control component;
step S5, after receiving the instruction, the servo active control system adjusts the axial force of the hydraulic oil cylinder to realize the active control of the concrete supporting axial force;
and S6, repeating the steps S1 to S5 until the foundation pit construction is finished.
Through adopting above-mentioned technical scheme, realize laying the cloth accuse structure in the foundation ditch, combine data feedback system simultaneously, accomplish real-time regulation monitoring, reduced laying of cable among the traditional foundation ditch monitoring simultaneously, improved data transmission efficiency to in time carry out feedback and initiative adjustment to the unusual condition of foundation ditch monitoring appearance, guarantee foundation ditch construction safety.
Optionally, the hydraulic cylinder in the step S3 should be preloaded by 10t before initial loading, so as to ensure that the hydraulic cylinder is installed accurately, and each stressed part is not abnormal, and the initial loading of the hydraulic cylinder in the step S3 is staged loading.
By adopting the technical scheme, the accuracy of the mounting position of the hydraulic oil cylinder is tested through preloading, and the stress of each part is not abnormal, so that preliminary grading loading is carried out after the situation is ensured, and accurate control adjustment is realized.
Optionally, in the step S4, when the detachment amount of the underground continuous wall from the purlin exceeds the alarm value, the method for adjusting the loading axial force is F = h (S), where F is the loading axial force of the hydraulic cylinder, S is the detachment amount of the enclosure structure from the purlin, and h is a function of the detachment amount S.
By adopting the technical scheme, when the separation amount of the underground continuous wall and the enclosing purlin exceeds the alarm value, the loading axial force of the hydraulic oil cylinder is equal to the function of the separation amount of the enclosure structure and the enclosing purlin.
Optionally, when the deformation of the underground diaphragm wall exceeds the alarm value in step S4, the method for adjusting the loading axial force is F = phid 2, where phiis a deformation coefficient of the enclosure, and d is the deformation of the enclosure.
By adopting the technical scheme, the loading axial force is equal to the product of the envelope deformation coefficient and the envelope deformation square according to the formula, so that the loading axial force is accurately adjusted.
Optionally, when the axial force for the concrete support in step S4 exceeds the alarm value, the method for adjusting the loading axial force is F = Ω/N, where Ω is a coefficient of the axial force for the concrete support, and N is the axial force for the concrete support.
By adopting the technical scheme, when the axial force of the concrete support exceeds the alarm value, the loaded axial force can be accurately adjusted according to the condition that the loaded axial force is equal to the ratio of the concrete support axial force coefficient to the concrete support axial force.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by adopting the real-time monitoring of the foundation pit concrete support axial force, the support structure deformation, the separation amount of the purlin and the support structure and the like in the construction process of the concrete support servo system, the provided data acquisition system can realize the signal conversion and the wireless receiving and transmitting of the monitoring data, the arrangement of cables in the traditional foundation pit monitoring is reduced, and the data transmission efficiency is improved.
2. Can realize the foundation ditch monitoring safely high-efficiently to the unusual condition of foundation ditch monitoring appears and in time carries out feedback and initiative adjustment, guarantee foundation ditch construction safety.
3. Aiming at monitoring data of a foundation pit part in the construction process of a concrete support servo system, a corresponding loading axial force adjusting method is provided, the deformation control of the foundation pit can be scientifically and accurately realized, the bearing capacity of a concrete support is fully exerted, and the construction safety of the foundation pit is ensured.
Drawings
FIG. 1 is a top view of the overall arrangement of deployment structures in a servo system.
FIG. 2 is a flow chart of a monitoring data collection and transmission system in a servo system.
Fig. 3 is a control flow chart in the servo system.
FIG. 4 is a schematic diagram of steps of a construction monitoring and control method of a concrete support servo system.
Reference numerals: 1. supporting concrete; 2. a column; 3. an enclosure structure; 4. enclosing purlins; 5. a wireless steel bar stress meter; 6. a wireless displacement sensor; 7. mounting grooves; 8. a hydraulic cylinder; 9. and a servo active control component.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses concrete support servo system.
Referring to fig. 1 and 2, a concrete support servo system includes a deployment control structure and a data feedback system.
Referring to fig. 1 and 2, the data feedback system comprises a data acquisition unit, wherein the data acquisition unit is a wireless steel bar stress gauge 5 and a wireless displacement sensor 6 and is mainly used for acquiring monitoring data of each part in a foundation pit;
referring to fig. 1 and 2, the communication module is a 5G/LORA module, and the communication module includes an SIM card, a data transceiver and a data modulation and demodulation device, and the data modulation and demodulation device processes the monitoring data collected by the data collection instrument through an RS485 protocol, so as to realize the conversion between the monitoring signal and the computer data, and realize the data exchange comparison between the collected data and the external foundation pit detection system cradle head through the SIM card.
Referring to fig. 1 and 2, the data feedback system further includes a feedback module, the feedback module includes a servo active control assembly 9 and a hydraulic cylinder 8, the servo active control assembly 9 is a servo oil pump and a PLC device, the servo oil pump is controlled by the PLC device to extract hydraulic oil in an external oil tank, and the hydraulic oil is supplied to the hydraulic cylinder 8, so that the telescopic control of a piston rod of the hydraulic cylinder 8 is realized.
Referring to fig. 1 and 2, the deployment and control structure is implemented on the basis of a data feedback system, the deployment and control structure comprises a concrete support 1 and an upright post 2, the concrete support 1 is formed between two sides of a foundation pit in a pouring mode, one end of the concrete support 1 abuts against one side of the foundation pit, the other end of the concrete support 1 abuts against the other side of the foundation pit, and the upright post 2 is formed in the middle of the concrete support 1 in a pouring mode.
Referring to fig. 1, when a foundation pit is excavated, a surrounding structure 3 is formed on the periphery of the foundation pit, and a surrounding purlin 4 is formed on the periphery of the surrounding structure 3 while a concrete support 1 is poured, so that the end of concrete faces the side of the surrounding purlin 4 away from a maintenance structure.
Referring to fig. 1, in order to ensure the safety of the foundation pit in subsequent construction, when the concrete support 1 is poured, the wireless steel bar stress gauge 5 is arranged at one end of the concrete support 1 and is mainly used for monitoring the axial force of the concrete support 1 in the foundation pit construction process. Meanwhile, the wireless displacement sensor 6 is arranged on the enclosure structure 3 and the enclosing purlin 4, and the deformation of the enclosure structure 3 and the separation between the enclosure structure 3 and the enclosing purlin 4 are monitored through the wireless displacement sensor 6.
Referring to fig. 1, in order to realize the loaded axial force of automatic control, a mounting groove 7 is reserved on the purlin 4 on one side of the foundation pit, a hydraulic oil cylinder 8 is mounted in the mounting groove 7, and meanwhile servo active control assemblies 9 used for controlling the hydraulic oil cylinder 8 are mounted on two sides of the mounting groove 7, so that the whole servo system can timely feed back and actively adjust when abnormal conditions occur in foundation pit monitoring, and the construction safety of the foundation pit is guaranteed.
In order to ensure that the whole concrete support 1 servo system is accurate, feasible and falls to the ground, the application also discloses a concrete support servo system construction monitoring and control method.
A construction monitoring and control method of a concrete support servo system comprises the following steps,
referring to fig. 1-4, in step S1, a constructor excavates foundation pit earthwork from the middle to both sides, binds the reinforcement cage of the concrete support 1, places the formed reinforcement cage of the concrete support 1 at a designated position, and buries the wireless reinforcement strain gauge 5 at one end of the reinforcement cage of the concrete support 1 to monitor the axial force of the concrete support 1 during the foundation pit construction process, and pours concrete on the reinforcement cage to form the concrete support 1.
In order to ensure the stability of the side wall structure of the foundation pit, the enclosing purlin 4 needs to be cast and molded on the inner side of the enclosure structure 3 when the concrete support 1 is cast, and before the enclosing purlin 4 is cast, the wireless displacement sensor 6 is installed on the enclosure structure 3 of the foundation pit in advance, so that the deformation of the enclosure structure 3 in the foundation pit construction process can be monitored.
Step S2, after waiting for the concrete strength to form, set up out mounting groove 7 on enclosing purlin 4, and install hydraulic cylinder 8 in the inner chamber of mounting groove 7, install servo active control subassembly 9 in the both sides of mounting groove 7, servo active control subassembly 9 includes servo oil pump and PLC equipment, the oil pipe that advances of servo oil pump communicates with external oil tank, through the instruction of PLC equipment wireless reception foundation ditch monitoring and analysis system cloud platform, adjust the flexible length of hydraulic cylinder 8 piston rod, thereby realize the automatically regulated loading axial force. Meanwhile, the wireless displacement sensor 6 is also arranged on one side, which is attached to the envelope structure 3, of the enclosing purlin 4, so that the disengagement amount between the envelope structure 3 and the enclosing purlin 4 is monitored.
After having built whole above-mentioned framework platform, through step S3, carry out preloading 10T 'S power to hydraulic cylinder 8 to whether test hydraulic cylinder 8' S mounted position is accurate, the atress of each part has the abnormal occurrence, when guaranteeing that the aforesaid is all abnormal occurrence, further carry out data verification to hydraulic cylinder 8 preliminary loading, the loaded process is through hierarchical loaded mode, make hydraulic cylinder 8 loaded power crescent, thereby the change of observation data has the abnormal occurrence.
And after no abnormity occurs in the loading, continuing to perform the next procedure construction of the foundation pit, wherein in the construction process, the wireless monitoring sensor acquires stress and displacement data of the concrete support 1 and the purlin 4, transmits the acquired data to the data wireless receiving and transmitting equipment after the acquired data is processed by the data modulation and demodulation device, and then transmits the data to the foundation pit monitoring and analysis system cloud deck through the wireless receiving and transmitting equipment.
And (5) after the data are transmitted to a foundation pit monitoring and analyzing system cloud deck, performing step S4, analyzing the monitoring data through the foundation pit monitoring and analyzing system cloud deck, and judging whether the monitored data exceed a standard alarm value or not according to the disengagement amount of the underground continuous wall and the enclosing purlin 4, wherein F = h (S), wherein F is the loading axial force of the hydraulic oil cylinder 8, S is the disengagement amount of the enclosure structure 3 and the enclosing purlin 4, and h is a function related to the disengagement amount S. And judging through the relational expression, and when the alarm value is exceeded, sending an instruction to the servo active control assembly 9 by the foundation pit monitoring and analyzing system cradle head.
When the deformation of the underground continuous wall is judged, F = φ d2 is passed, wherein φ is the deformation coefficient of the enclosure 3, d is the deformation of the enclosure 3, and the loaded axial force is equal to the product of the deformation coefficient of the enclosure 3 and the square of the deformation of the enclosure 3.
When the axial force of the concrete support 1 is judged, the loading axial force F = omega/N, wherein omega is the axial force coefficient of the concrete support 1, N is the axial force of the concrete support 1, and the loaded axial force can be obtained by the ratio of the axial force coefficient of the concrete support 1 to the axial force of the concrete support 1.
And after the judgment is finished, transmitting the judged instruction to the servo active control assembly 9, performing step S5, and after receiving the instruction, the PLC equipment drives the servo oil pump impeller to rotate forward and backward, so that the hydraulic oil cylinder 8 is controlled to stretch and retract, and the active control of the axial force of the concrete support 1 is realized.
And (5) in the whole excavation process of the foundation pit, carrying out step S6, and repeating the steps S1-S5 until the foundation pit construction is finished.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A servo system that concrete supported which characterized in that: the distribution control structure comprises a concrete support (1) arranged between two sides of a foundation pit and a stand column (2) integrally formed on the concrete support (1), the side wall of the foundation pit comprises an enclosing structure (3) and enclosing purlins (4) arranged on the opposite inner sides of the two enclosing structures (3), and two ends of the concrete support (1) are respectively abutted to the opposite inner walls of the two enclosing purlins (4);
the data feedback system comprises a data acquisition unit and is mainly used for acquiring monitoring data of the building enclosure (3) in real time;
the communication module is mainly used for carrying out real-time conversion and transmission on the acquired data;
and the feedback module is used for receiving a feedback result of the foundation pit detection and analysis system and executing automatic adjustment of the servo loading axial force.
2. A servo system for a concrete support according to claim 1, wherein: the data acquisition unit comprises wireless steel bar stressometers (5) and wireless displacement sensors (6), wherein the wireless steel bar stressometers (5) are arranged on the concrete supports (1), the wireless displacement sensors (6) are arranged in two numbers, one wireless displacement sensor (6) is arranged on the enclosure structure (3), the other wireless displacement sensor (6) is correspondingly arranged on the enclosure purlin (4), and the two wireless displacement sensors (6) are arranged on the same side of the foundation pit.
3. A servo system for a concrete support according to claim 1, wherein: the communication module comprises an SIM card, data receiving and transmitting equipment and a data modulation and demodulation device, wherein the data receiving and transmitting equipment realizes data conversion through the data modulation and demodulation device, realizes network communication through the SIM card and transmits the converted data.
4. A servo system for a concrete support according to claim 1, wherein: the feedback module comprises a servo active control assembly (9) and a hydraulic oil cylinder (8), a mounting groove (7) is reserved on the enclosing purlin (4), the hydraulic oil cylinder (8) is arranged in the mounting groove (7), and the servo active control assembly (9) is arranged on the enclosing purlin (4) and used for controlling the extension and retraction of a piston rod of the hydraulic oil cylinder (8).
5. A servo system for a concrete support according to claim 1, wherein: the data feedback system further comprises a voltage-stabilizing power supply and lightning protection equipment.
6. A construction monitoring and control method of a concrete support servo system is characterized by comprising the following steps,
step S1, excavating foundation pit earthwork, burying a wireless steel bar stress meter (5) and a wireless displacement sensor (6) for monitoring deformation of the enclosure structure (3), and then pouring concrete to form an enclosing purlin (4) and a concrete support (1);
step S2, after the concrete strength is formed, installing a hydraulic oil cylinder (8), a servo active control assembly (9) and a wireless displacement sensor (6) for monitoring the separation amount of the enclosure structure (3) and the enclosing purlin (4);
step S3, the hydraulic oil cylinder (8) carries out preliminary loading, the wireless monitoring sensor collects signals, the signals are transmitted to the data wireless transceiver after being processed by the data modulation and demodulation device, and data transmission is carried out on the foundation pit monitoring and analysis system;
step S4, the foundation pit monitoring and analyzing system analyzes the data, when the monitored data exceeds the alarm value, the foundation pit monitoring and analyzing system adjusts the loading axial force of the hydraulic oil cylinder (8) according to the monitored data and transmits the instruction to the servo active control component (9);
step S5, after receiving the instruction, the servo active control system adjusts the axial force of the hydraulic oil cylinder (8) to realize the active control of the axial force of the concrete support (1);
and S6, repeating the steps S1 to S5 until the foundation pit construction is finished.
7. The construction monitoring and control method of a concrete support servo system according to claim 6, characterized in that: and pre-loading 10t before the hydraulic oil cylinder (8) is initially loaded in the step S3 to ensure that the installation position of the hydraulic oil cylinder (8) is accurate and each stressed part is not abnormal, wherein the initial loading of the hydraulic oil cylinder (8) in the step S3 is classified loading.
8. The construction monitoring and control method of a concrete support servo system according to claim 6, characterized in that: and when the detachment amount of the underground continuous wall and the enclosing purlin (4) exceeds an alarm value in the step S4, the loading axial force adjusting method is F = h (S), wherein F is the loading axial force of the hydraulic oil cylinder (8), S is the detachment amount of the enclosure structure (3) and the enclosing purlin (4), and h is a function of the detachment amount S.
9. The construction monitoring and control method of a concrete support servo system according to claim 6, characterized in that: and when the deformation of the underground continuous wall exceeds the alarm value in the step S4, the loading axial force adjusting method is F = φ d2, wherein φ is the deformation coefficient of the enclosure structure (3), and d is the deformation of the enclosure structure (3).
10. The construction monitoring and control method of a concrete support servo system according to claim 6, characterized in that: and when the axial force of the concrete support (1) exceeds the alarm value in the step S4, the method for adjusting the loading axial force is F = Ω/N, where Ω is the coefficient of the axial force of the concrete support (1), and N is the axial force of the concrete support (1).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908769A (en) * | 2022-05-23 | 2022-08-16 | 上海建工一建集团有限公司 | Construction method for actively regulating and controlling concrete support servo axial force of foundation pit |
| CN115387349A (en) * | 2022-08-11 | 2022-11-25 | 上海元易勘测设计有限公司 | Foundation pit supporting shaft force servo system |
| CN116815790A (en) * | 2023-08-28 | 2023-09-29 | 上海建工一建集团有限公司 | Foundation pit supporting servo system with two sides adjacent to protection objects and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114908769A (en) * | 2022-05-23 | 2022-08-16 | 上海建工一建集团有限公司 | Construction method for actively regulating and controlling concrete support servo axial force of foundation pit |
| CN114908769B (en) * | 2022-05-23 | 2024-02-06 | 上海建工一建集团有限公司 | Construction method for actively regulating foundation pit by servo axial force of concrete support |
| CN115387349A (en) * | 2022-08-11 | 2022-11-25 | 上海元易勘测设计有限公司 | Foundation pit supporting shaft force servo system |
| CN116815790A (en) * | 2023-08-28 | 2023-09-29 | 上海建工一建集团有限公司 | Foundation pit supporting servo system with two sides adjacent to protection objects and construction method thereof |
| CN116815790B (en) * | 2023-08-28 | 2023-11-17 | 上海建工一建集团有限公司 | Construction method of foundation pit supporting servo system with two sides adjacent to protection object |
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