CN201778327U - Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit - Google Patents
Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit Download PDFInfo
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- CN201778327U CN201778327U CN2010201066732U CN201020106673U CN201778327U CN 201778327 U CN201778327 U CN 201778327U CN 2010201066732 U CN2010201066732 U CN 2010201066732U CN 201020106673 U CN201020106673 U CN 201020106673U CN 201778327 U CN201778327 U CN 201778327U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model discloses a steel bracing strut axial force compensation electric controlling and monitoring system in deep foundation pit construction, which can effectively control deformation in deep foundation pit construction and guarantee subway tunnel safety. The electric controlling and monitoring system comprises a pressure sensor, which is arranged in a hydraulic pump station and connected with a corresponding lifting jack, so as to detect corresponding lifting jack pressure in a real-time manner; an on-site control station receives lifting jack pressure data detected by the pressure sensor in the hydraulic pump station, and when the pressure data fails to reach preset operating pressure value, the on-site control station gives out command to start a hydraulic pump motor to adjust the pressure of the hydraulic system to reach the operating pressure; a monitoring station collects data of the on-site control station through a bus, and gives out control commands to the on-site control station to control the telescopic motion of the lifting jack corresponding to the hydraulic pump station; and each hydraulic pump station can be connected with four lifting jacks and mounted with four pressure sensors respectively, so as to detect the pressure of lifting jacks respectively.
Description
Technical field
The utility model is about a kind of automatically controlled and remote real-time monitoring system, and particularly about a kind of deep foundation ditch steel support shaft force compensation electrical control and monitoring system.
Background technology
Be accompanied by the great development of urban track traffic, the extreme of land resources is in short supply in addition, and the deep-foundation pit engineering of neighbour's subway is increasing.
In Shanghai, big 3 layers of basement of Hui Defeng square, Shanghai engineering (local 4 layers), excavation area reaches 9800m2; the nearly 21m of cutting depth (the darkest 26m that reaches in part); the interval operation tunnel of No. 2 lines of the parallel contiguous subway in foundation ditch north side, clear spacing is 5.4m only, tunnel and foundation ditch parallel length 90m.Shanghai Pacific Ocean square the second stage of the project is apart from tunnel, Subway Line 1 outer edge 3.8m only.No. two lines of No. 1788 plot, West Road, Nanjing base pit engineering next-door neighbour's subway, about 10～11 meters of clear spacing, and parallel length reaches hundred meters.We have to face a problem, the safety problem of subway.
Excavation of foundation pit has been tending towards extensiveization and the big degree of depthization at present; and construction is many based on the suitable practice of open cut; as everyone knows; the deep foundation pit open cutting construction often is accompanied by extremely strong environmental effect; if deep foundation pit construction is not carried out strict Deformation control; contiguous subway can influence its normal use because of moderate finite deformation, and in the time of seriously even accidents caused, economic loss that is caused and social influence are immeasurable.
Therefore, one of main direction that develops gradually to modern base pit engineering research is controlled in the ultra-deep foundation pit construction to the security implication of contiguous subway.
At present, support in the excavation supporting steel bar concrete support commonly used of soft clay area city deep foundation ditchs such as Shanghai and the steel pipe of Φ 609 * δ 16, particularly steel pipe supports, when general steel supports, all apply prestressing force by designing requirement, but when construction, As time goes on, the steel support is gone up added prestressing force and can be reduced, and reduce much sometimes, even the reduction amount reaches more than 50%, and be difficult to apply axial force of the supports this moment again, so cause the body of wall displacement, when displacement is excessive, will directly influence the safety of subway in the operation of foundation ditch next door.
The utility model content
For addressing the above problem, the utility model has designed a cover and can effectively control the deep foundation pit construction distortion and guarantee that the deep foundation ditch construction steel support axial force that moves subway tunnel safety compensates electrical control and monitoring system.
Deep foundation ditch steel support shaft force compensation electrical control and the monitoring system that the utility model proposes comprise: pressure sensor is arranged in the hydraulic power unit, links to each other with corresponding jack, can detect the pressure of corresponding jack in real time; Field control station receives the detected jack pressure data of pressure sensor in the hydraulic power unit, wherein said pressure data does not reach when presetting the operating pressure value, and described field control station sends instruction and starts hydraulic pump motor adjusting hydraulic system pressure to operating pressure; The data that monitoring station is gathered described field control station by bus are sent control instruction is controlled the jack of described hydraulic power unit correspondence in described field control station expanding-contracting action; Each hydraulic power unit can connect four jack, and four pressure sensors have been installed respectively, can detect the pressure of each jack respectively.
The utility model is that also described field control station is by the adjusting of the pressure regulator valve in corresponding pumping plant hydraulic system pressure.
The utility model is that also described field control station controls described corresponding jack expanding-contracting action by the reversal valve in the corresponding pumping plant.
The utility model is that also unloader is arranged in the described hydraulic power unit, and each hydraulic power unit is provided with a unloader.
The utility model is that also described field control station receives the response compensatory pressure instruction that described monitoring station sends, and carries out pressure compensation to the hydraulic power unit of described correspondence and the jack of correspondence.
The utility model comprises that also the mobile diagnostics control cabinet can directly control a certain field control cabinet or hydraulic power unit, can set up the pressure of the pairing jack of hydraulic power unit.
The utility model also comprises the position limitation protection system, keeps the pressure of the pairing jack of described hydraulic power unit system when outage.
The utility model is that also the default hardware pressure of described monitoring station is spacing, wherein surpasses described hardware pressure when spacing when pressure is set, and it is invalid that pressure is set, and must reset pressure and requires in the spacing scope of hardware pressure just effectively.
The utility model also comprises the data of described certain field control station of active station collection, accepts the expanding-contracting action that operational order sends certain jack of control instruction under described field control station and corresponding hydraulic power unit.
The utility model has following characteristics: 1. system's real-time response precision height, and response accuracy reaches more than 95%; Response time foreshortens to 2 seconds.2. the control of blocking, every group of axle power auto compensation unit adopted a cover pumping plant and a These field control modules, makes every group of monitoring unit can both independently realize a power automatic compensation function, reduced the system risk that is caused by pumping plant and control system fault.3. disposed the mobile diagnostics control cabinet, can realize that under the situation of central control system and These field control modules communication failures the axle power of trouble unit compensates automatically; Under control module hardware fault situation, can realize the axle power manual compensation of trouble unit.The safety and the reliability of system have been increased greatly.4. field control station adopts touch screen operation, and being easily understood in the interface, is convenient to operating personnel's learning and mastering.5. design has increased control command twin check and big variable classification input function, needs control command key and control operation key to press simultaneously and could carry out control command, greatly reduces the possibility of maloperation and data mistake input.
For above-mentioned feature and advantage of the present utility model can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Figure 1 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system circuit diagram that the utility model proposes.
Figure 2 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system electrical control schematic diagram that the utility model proposes.
Figure 3 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system structural representation that the utility model proposes.
Figure 4 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system process chart that the utility model proposes.
The specific embodiment
In order more to understand technology contents of the present utility model, especially exemplified by specific embodiment and cooperate appended graphic being described as follows.
In order to realize the control function of central control room and job site, the utility model embodiment utilizes microcomputer and PLVC to set up control system, use for reference the principle of the collecting and distributing control of DCS, connect on-the-spot by the data communication bus, change conventional execute-in-place, realized long-range and on-the-spot effective monitoring.
In control system, increase the function of massage protection, need effectively reduce maloperation and mistake input by the enter key of issuing orders when making input command and controlling parameter.With hardware and software is dual preset pressure is limited, prevent to import and be higher than required pressure, guarantee that pressure is in setting range.
Figure 1 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system circuit diagram that the utility model proposes.Figure 2 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system electrical control schematic diagram that the utility model proposes.
As depicted in figs. 1 and 2, after system brings into operation, field control station receives from the detected pressure data of pressure sensor SP1, SP2, compare with systemic presupposition pressure, do not reach the operating pressure of setting, then field control station sends instruction, and hydraulic pump motor begins starting, this moment, system pressure directly by unloader YA3 off-load, was avoided the hydraulic pump loaded starting; When unloader YA3 gets electronic work, then field control station is regulated hydraulic system pressure by pressure regulator valve YV, makes it to reach needed operating pressure.
The expanding-contracting action that the control instruction control reversal valve YA1 that field control station sends according to monitoring station or active station, YA2 finish jack.
Monitoring station reads the related data that each field control station collects by bus, and show at the centralized displaying interface, by monitoring station operation interface and active station each field control station is controlled, after setting the response compensatory pressure, each field control station compensates corresponding jack according to this instruction.
Figure 3 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system structural representation that the utility model proposes.As shown in Figure 3, in the present embodiment, monitoring station is connected field control station 1#, field control station 2# by data/address bus with the threeway junction box, to field control station 6#, each field control station then supports and relevant jack device by each steel of HYDRAULIC CONTROL SYSTEM, wherein monitoring station is gathered the information data of each field control station in real time, thereby is shown to the operator.Monitoring station can according to the data value of setting, each field control station is sent instruction.The utility model embodiment has also added the function of fault diagnosis respectively at active station display interface and monitoring station display interface, wherein, the picture of monitoring station be without can showing each control station subordinate pumping plant pressure, can also upgrade and playbacks showing malfunction.In system, design position limitation protection, can when outage, stop the draining instruction, kept jack pressure.Combine with mechanical lock and to have formed the duplicate protection of emergency rating.
For ensureing the security reliability of electrical system, present embodiment also is provided with safe-guard system.Electrical system is provided with the hardware limit of preset pressure input, and to surpass electric hardware spacing when monitoring system is provided with pressure, is preset pressure with the hardware limit then, guaranteed that the pressure input is no more than safe range.Monitoring system is provided with preset pressure and imports step by step, the security reliability when having guaranteed the jack device pushing tow.Monitoring system has been equipped with UPS, prevents that sudden power from causing loss of data.Field control station can keep preset pressure when outage, make once more and also can continue original state after the energising.Active station and field control station have certain waterproof ability, and the internal electric element possesses the degree of protection of IP56～IP65, possess stronger environmental suitability.Whole communications connect the threeway junction box that has all adopted the band redundant channel between each station, guarantee the stable of Direct box transfer of data.
In addition, field control station adopts touch-screen in the present embodiment, user-centered interface, each parameter come into plain view on the interface, are convenient to operating personnel and understand running situation, pass through configuration, each pressure monitor point is switched arbitrarily on touch-screen, and operational order is simple, and has increased the fault diagnosis page, make whole system succinct, be convenient to operation.
Central control room has been set up the database of monitored data, makes system possess any time of calling data, and can realize formization, pictorialization and the printing function of data.
In view of the extreme importance of data communication in control system, the threeway junction box of redundant channel is all adopted in the data telecommunication line junction, guarantees to instruct and transfer of data stable.In system, increase the design of hot plug pattern, made a force compensating system can increase, be shifted and delete control module, increased the flexibility of practical operation.
Figure 4 shows that deep foundation ditch steel support shaft force compensation electrical control and the monitoring system process chart that the utility model proposes.As shown in Figure 4, the utility model embodiment has also designed the mobile diagnostics control cabinet, can realize the automatic control of pressure of every group of control module and the manual control of single jack pressure.Wherein the oil-feed of each A mouth and the draining of B mouth can be manually finished in control to pumping plant, are convenient to diagnose when the steel supporting ﹠ stablizing applies the prestressing force and the system failure and interim control.Present embodiment not only can be realized the Manual pressure compensation, and can realize automatic compensation, and can pass through control system lock pressure bound, and the pressure oscillation scope of setting certain amplitude.
The important technological parameters that this embodiment of the utility model adopts is as follows:
| Sequence number | | Unit | Parameter | |
| 1 | Supply voltage | V | 380、220、24 | |
| 2 | Response accuracy | ％ | 95 | |
| 3 | | S | 2 |
By debugging test and simulation entity test, present embodiment can be realized: 1. setting pressure in 0～32Mpa scope, and can set software its maximum pressure is limited in 30Mpa, prevent to miss that to establish pressure excessive, and can satisfy operation pressure and compensate needs; 2. after pressure is set, can realize compensation automatically, respond well, and in the duration, carry out pressure correction; 3. electric hardware limit, the anti-error goal pressure of establishing; 4. behind the continuous electricity, the previous status restore funcitons; 5. the mobile diagnostics control cabinet is to the dual-use function of field control station and pumping plant control; 6. the pumping plant whole unit is replaced fast; 7. bus communication satisfies Long-distance Control; 8. the bus hot plug technology dynamically adds new control module; 9. dynamically shielding is broken down and can be realized dynamically shielding and elimination thereof, and each control module state is upgraded.
In addition, present embodiment is after setting pressure, and system can carry out action in 2s, 5s makes oil pressure keep stable, and compensation finishes, and the actual pressure after compensation is finished fluctuates in preset pressure ± 5% scope, exceed the back and carry out corresponding actions, make pressure stability in preset range.
In control design link, present embodiment has suitably increased the oil inlet quantity of supercharging first, assurance has sufficient first pressure, after oil-feed finishes, according to compare suitable draining with preset pressure, adjust pressure, control accuracy is reached more than 95%, also guaranteed control efficiency simultaneously, the response time is shortened.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is as the criterion when looking claims person of defining.
Claims (7)
1. a deep foundation ditch steel support shaft force compensates electrical control and monitoring system, it is characterized in that, comprise: monitoring station, described monitoring station comprises a plurality of field control stations that are electrically connected with monitoring station, described each field control station comprises a plurality of hydraulic power units that are electrically connected with field control station, and described each hydraulic power unit is connected with four jack by oil circuit, and four pressure sensors have been installed respectively, described pressure sensor is arranged in the hydraulic power unit, links to each other with corresponding jack; Described each field control station also comprises the hydraulic pump motor that is electrically connected with field control station.
2. deep foundation ditch steel support shaft force compensation electrical control according to claim 1 and monitoring system is characterized in that, comprise the pressure regulator valve that is connected with the hydraulic power unit oil circuit in the described hydraulic power unit.
3. deep foundation ditch steel support shaft force compensation electrical control according to claim 1 and monitoring system is characterized in that be provided with reversal valve in the described hydraulic power unit, described reversal valve is connected with the hydraulic power unit oil circuit with described jack respectively.
4. deep foundation ditch steel support shaft force compensation electrical control according to claim 1 and monitoring system is characterized in that unloader is arranged in the described hydraulic power unit, and each hydraulic power unit is provided with a unloader.
5. deep foundation ditch steel support shaft force compensation electrical control according to claim 1 and monitoring system is characterized in that also comprise the mobile diagnostics control cabinet, described mobile diagnostics control cabinet is connected between field control station and the hydraulic power unit.
6. deep foundation ditch steel support shaft force according to claim 1 compensation electrical control and monitoring system is characterized in that, also comprise the position limitation protection system, and described position limitation protection system is arranged in the described monitoring station.
7. deep foundation ditch steel support shaft force compensation electrical control according to claim 1 and monitoring system is characterized in that also comprise active station, described active station is connected between described monitoring station and the field control station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201066732U CN201778327U (en) | 2010-01-19 | 2010-01-19 | Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201066732U CN201778327U (en) | 2010-01-19 | 2010-01-19 | Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit |
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| CN201778327U true CN201778327U (en) | 2011-03-30 |
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| CN2010201066732U Expired - Lifetime CN201778327U (en) | 2010-01-19 | 2010-01-19 | Steel bracing strut axial force compensation electric controlling and monitoring system for deep foundation pit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848127A (en) * | 2010-05-07 | 2010-09-29 | 上海建工（集团）总公司 | Data communication system and method for deep foundation ditch construction steel support axial force adaptive system |
| CN108166505A (en) * | 2018-01-22 | 2018-06-15 | 东莞市朝立建筑工程有限公司 | A kind of foundation pit high stability support device and method |
| CN109058237A (en) * | 2018-08-17 | 2018-12-21 | 江苏东合南岩土科技股份有限公司 | Steel support shaft force compensating system |
-
2010
- 2010-01-19 CN CN2010201066732U patent/CN201778327U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101848127A (en) * | 2010-05-07 | 2010-09-29 | 上海建工（集团）总公司 | Data communication system and method for deep foundation ditch construction steel support axial force adaptive system |
| CN108166505A (en) * | 2018-01-22 | 2018-06-15 | 东莞市朝立建筑工程有限公司 | A kind of foundation pit high stability support device and method |
| CN109058237A (en) * | 2018-08-17 | 2018-12-21 | 江苏东合南岩土科技股份有限公司 | Steel support shaft force compensating system |
| CN109058237B (en) * | 2018-08-17 | 2020-10-13 | 江苏东合南岩土科技股份有限公司 | Steel support axial force compensation system |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |
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| CX01 | Expiry of patent term |