CN205449046U - Deep horizontal displacement monitoring system of foundation pit retaining structure - Google Patents
Deep horizontal displacement monitoring system of foundation pit retaining structure Download PDFInfo
- Publication number
- CN205449046U CN205449046U CN201620189489.6U CN201620189489U CN205449046U CN 205449046 U CN205449046 U CN 205449046U CN 201620189489 U CN201620189489 U CN 201620189489U CN 205449046 U CN205449046 U CN 205449046U
- Authority
- CN
- China
- Prior art keywords
- monitoring
- foundation pit
- point
- control point
- enclosure structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a deep horizontal displacement monitoring system of foundation pit retaining structure. The system includes the total powerstation, and still including the datum point that is used for the orientation inspect benchmark, the datum point includes benchmark control point and control point relatively, still warp and sets up in foundation pit retaining structure face, inbuilt a plurality of monitoring point that comprises the reflect meter from top to bottom including being used for monitoring the foundation pit retaining structure face, between the adjacent monitoring point interval for 0.5m to 1.0m and keep on same plumb line. Adopt the utility model discloses can be very conveniently to the interim monitoring of foundation ditch unusual position increase. When shoring of trench axle power monitoring position axle power value is unusual, can increase single or a plurality of measurement stations at any time and monitor envelope and warp the condition, saved the complicated step of burying the deviational survey pipe again at the envelope internal drilling underground.
Description
Technical field
This utility model belongs to building engineering construction safety monitoring technology field, especially belongs to Construction Monitoring of Foundation Pit Engineering technical field, particularly to the monitoring system of a kind of foundation pit enclosure structure deeply mixing cement-soil pile.
Background technology
Along with the high speed development of urban construction, the exploitation dynamics of the underground space is the most increasing, and deep-foundation pit engineering all obtains development at a high speed at aspects such as quantity, the degree of depth, planar dimension and use fields.And owing to building dense degree all kinds of in city are gradually increased, the displacement deformation and the adverse effect that produce after excavation of foundation pit and construction are controlled more and more tighter by environment adjacent, underground utilities, traffic above-ground.In the work progress of deep pit digging; the only soil body and adjacent structures to foundation ditch carries out comprehensive monitoring; influence degree to the safety of base pit engineering with to surrounding could there is comprehensively grasp; when abnormal conditions occur and alarm; and take necessary engineering emergency measure, to guarantee the safety of base pit engineering and surrounding and to stablize.
Cities in China carries out urban rail transit construction the most on a large scale at present, and in urban rail transit construction, the safety monitoring work of deep basal pit is to ensure that the most important thing of production safety zero accident rate.In track traffic deep pit digging, the monitoring of building enclosure deeply mixing cement-soil pile is to ensure that the most important monitoring project of deep pit monitor, and the monitoring element (inclinometer pipe) monitoring this project can be destroyed because of construction unavoidably, once destroy, just cannot continue monitoring.Again bury underground in building enclosure internal drilling, more manpower and materials, raising cost can be consumed, affect the duration, and increase site operation potential safety hazard during this period.
Utility model content
In order to solve the problems referred to above, this utility model provides one, and to be suitable for deep-foundation pit engineering building enclosure deeply mixing cement-soil pile monitoring element (inclinometer pipe) destroyed and cannot adopt an effective measure in time, remedies monitoring method and monitoring system thereof when lacking building enclosure displacement monitoring measure.
This utility model method uses high precision measuring instrument and each measuring point equal precision measurement principle, utilize instrument self fine mode periodic measurement datum mark to the horizontal range of each monitoring point in building enclosure vertical direction, the most periodically check calibration monitoring criteria control point, draw building enclosure deformation by calculating each monitoring point in building enclosure relative to the situation of change of datum mark.
This utility model is achieved through the following technical solutions:
This utility model provides a kind of foundation pit enclosure structure deeply mixing cement-soil pile monitoring system.
Including the total powerstation for accurately measuring distance, it is characterised in that: described system also includes datum mark, monitoring point；
Datum mark, for position monitor benchmark, including the monitoring criteria control point C being arranged at intervisibility position, each monitoring point and comparison control point A and B being arranged at foundation ditch base fixed reliable area；Total powerstation is arranged on the C of monitoring criteria control point；
Monitoring point, is used for monitoring foundation pit enclosure structure facial disfigurement, including the multiple reflection units being arranged at foundation pit enclosure structure face, from top to bottom bury underground.
Between neighboring reflection device, spacing is 0.5m to 1.0m further, and each reflection unit is maintained on same plumb line.
Described reflection unit is affixed to the reflector plate on foundation pit enclosure structure surface.
The step using above-mentioned monitoring system to carry out foundation pit enclosure structure deeply mixing cement-soil pile monitoring includes: carry out every preparation of construction before construction, including preparing the material that construction needs: reflection unit, anchoring adhesive, cement, sand, forced centering plate etc., monitoring comprises the following steps:
Monitoring point is arranged, and determines monitoring foundation pit enclosure structure face, from top to bottom buries monitoring point reflection unit underground, and between neighboring reflection device, spacing is 0.5m to 1.0m, and each reflection unit is maintained on same plumb line；
Datum mark is arranged, and selects to arrange monitoring criteria control point C with intervisibility position, each monitoring point, selects foundation ditch base fixed reliable area to arrange and compare control point A and B, compare control point A and B and control point C and keep intervisibility；
Datum mark is measured, and carries out horizontal control network measurement, measures and obtains comparing the relative position relation between control point A and B, benchmark control point C 3；
Monitoring point is measured, total powerstation is disposed to monitor by benchmark control point C, observe the distance of this point and each reflection unit, each segment distance surveyed for four survey time, from top to bottom it is followed successively by S1, S2, S3 ... Sn, take each distance S1, S2, S3 ... the meansigma methods of four position number of Sn is as the initial value of each distance, take the average S1 ' of four survey time distances, S2 ', S3 ' when measuring ... Sn ' is as observation the most every time, accumulative horizontal displacement=initial value-this observation, "-" value represent toward hole outer displacement, "+" value represent toward hole intrinsic displacement.
Described benchmark control point C is arranged at foundation pit enclosure structure opposite face can intervisibility position with each reflection unit.
It is destroyed and cannot adopt an effective measure in time that this utility model system is suitable for deep-foundation pit engineering building enclosure deeply mixing cement-soil pile monitoring element (inclinometer pipe), remedies monitoring when lacking building enclosure displacement monitoring measure.This utility model system is during total station survey, total powerstation can be considered equal precision measurement to horizontal range S between each reflector plate, when calculating each measuring point accumulative displacement, each observation error does not produce accumulative, it is ensured that the precision of building enclosure deeply mixing cement-soil pile monitoring.Use this utility model method and system thereof that foundation ditch exception position can increase interim monitoring easily.When foundation ditch axial force of the supports monitoring position axle force value exception, single or multiple measuring point can be increased at any time to monitor building enclosure deformation, eliminate the complex steps again burying inclinometer pipe in building enclosure internal drilling underground.
Accompanying drawing explanation
Fig. 1 is that this utility model System planes arranges schematic diagram；
Fig. 2 is that schematic diagram is arranged in this utility model systematic vertical face；
Fig. 3 is this utility model method flow schematic diagram.
In figure.1 is foundation ditch, and 2 is reflection unit, and 3 is inclination measurement device, and 4 is foundation ditch basis, and A, B are to compare control point, and C is benchmark control point.
Detailed description of the invention
Below by embodiment, this utility model is specifically described; embodiment is served only for being further detailed this utility model; it is not intended that the restriction to this utility model protection domain, some nonessential improvement and adjustment that those skilled in the art makes according to content of the present utility model fall within the scope that this utility model is protected.
In conjunction with Fig. 1 to Fig. 3.
As depicted in figs. 1 and 2, foundation pit enclosure structure horizontal displacement monitoring system.
Including the total powerstation for accurately measuring distance, described system also includes datum mark, monitoring point；
Datum mark, for position monitor benchmark, including the monitoring criteria control point C being arranged at intervisibility position, each monitoring point and comparison control point A and B being arranged at 4 reliable and stable regions, foundation ditch basis；Total powerstation is arranged on the C of monitoring criteria control point；
Monitoring point, is used for monitoring foundation ditch 1 building enclosure facial disfigurement, including the multiple reflection units 2 being arranged at foundation ditch 1 building enclosure face, from top to bottom bury underground.
Between neighboring reflection device 2, spacing is 0.5m to 1.0m, and each reflection unit 2 is maintained on same plumb line.
This example reflection unit 2 is affixed to the reflector plate on foundation ditch 1 building enclosure surface.
As it is shown on figure 3, monitoring using method includes:
Preparation of construction is carried out, including preparing the material that construction needs: such as reflection unit, anchoring adhesive, cement, sand, forced centering plate etc. before construction；
Monitoring comprises the following steps:
Monitoring point is arranged, and determines monitoring foundation ditch 1 building enclosure face, from top to bottom buries monitoring point reflection unit 2 underground, and between neighboring reflection device 2, spacing is 0.5m to 1.0m, and each reflection unit 2 is maintained on same plumb line；
Datum mark is arranged, and selects to arrange monitoring criteria control point C with intervisibility position, each monitoring point, selects 4 reliable and stable regions, foundation ditch basis to arrange and compares control point A and B, compares control point A and B and control point C and keep intervisibility；
Datum mark is measured, and carries out horizontal control network measurement, measures and obtains comparing the relative position relation between control point A and B, benchmark control point C 3；
Monitoring point is measured, total powerstation is disposed to monitor by benchmark control point C, observe the distance of this point and each reflection unit 2, each segment distance surveyed for four survey time, from top to bottom it is followed successively by S1, S2, S3 ... Sn, take each distance S1, S2, S3 ... the meansigma methods of four position number of Sn is as the initial value of each distance, take the average S1 ' of four survey time distances, S2 ', S3 ' when measuring ... Sn ' is as observation the most every time, accumulative horizontal displacement=initial value-this observation, "-" value represent toward hole outer displacement, "+" value represent toward hole intrinsic displacement.
Benchmark control point C should be arranged at foundation ditch 1 building enclosure opposite face can intervisibility position with each reflection unit 2.
Monitoring process performs in strict accordance with the main technical requirements of range finding first-class in " Code for engineering surveying ", is shown in Table 1.
The main technical requirements of table 1 range finding
| Grade | Accuracy of instrument grade | Every limit position number | One survey time reading poor (mm) | One way each survey time poor (mm) |
| First-class | 1mm level instrument | 4 | 1 | 1.5 |
| Second-class | 2mm level instrument | 3 | 3 | 4 |
Note: the survey time refers to sight target once, reading 2～the process of 4 times.
During monitoring, the data that note abnormalities should check whether Monitoring and Controlling point is subjected to displacement immediately.The displacement occurred because of Monitoring and Controlling point, it is necessary to first revise monitoring observation and calculate each monitoring point displacement in building enclosure again.
Total powerstation and supporting monitoring device such as table 2 below thereof
Monitoring key Quality Control
Being monitored, reference net observation is appropriate to the occasion to be carried out under cloudy day calm weather, subject to conditions must tackle instrument carry out holding up an umbrella shading in fine day operation.
Instrument stand must be located at before measurement forced centering pier and be placed on on-the-spot more than shady and cool ventilation 30min, make instrument internal temperature consistent with ambient temperature.
Measure instrument equipment must qualified and calibrating effect duration within；Instrument internal parameter, measurement pattern, prism constant etc. need to be set during measurement.
Monitoring point should be buried underground in the case of having work surface after excavation of foundation pit in time, and obtains initial value in 24h.
Before monitoring point is buried underground, should be cleaned out by the earth in the building enclosure of relevant position, burying monitoring point underground must be firmly.
Fixed observer personnel and instrument are answered in monitoring, use identical observation procedure and observation route, testing in the case of essentially identical；
Periodically datum mark should be carried out translocation to check its stability during monitoring；Within the whole construction time, take effective protection measure, it is ensured that it normally used in whole construction period.
It is arranged around significantly indicating and being numbered at measuring point, notes protection measurements, destroy when being strictly on guard against construction；And check whether measuring point loosens before observation every time；Confirm can measure when measuring point is in good condition.
Observation data should conscientiously calculate arrangements, carefully check, and pinpoint the problems and should read again, and whether inspection apparatus, instrument install correct, and whether measuring point loosens, when determine errorless after test again, and observed data with last time and record simultaneously.
This utility model system is applied to Shenzhen Metro line and amounts to the monitoring of the destroyed rear building enclosure deeply mixing cement-soil pile of 46 building enclosure inclinometer pipes.Owing to have employed this engineering method, the change of building enclosure deeply mixing cement-soil pile is monitored, on-the-spot excavation and support erection are served obvious directive function, the effective guarantee safety of foundation ditch and surrounding enviroment, cost and time are saved, observing buoy energy action displacement situation of change, achievement is reliable, meets subway monitoring specification and relevant criterion requirement.
This utility model system is applied to the monitoring after Chengdu subway line has 15 building enclosure inclinometer pipes destroyed altogether, excavation and support erection are served obvious directive function, the effective guarantee safety of foundation ditch and surrounding enviroment, cost and time are saved, observing buoy can action displacement situation of change, achievement is reliable, meets subway monitoring specification and relevant criterion requirement.
Claims (3)
1. a foundation pit enclosure structure deeply mixing cement-soil pile monitoring system, including the total powerstation for accurately measuring distance, it is characterised in that: described system also includes datum mark, monitoring point；
Datum mark, for position monitor benchmark, including the monitoring criteria control point C being arranged at intervisibility position, each monitoring point and comparison control point A and B being arranged at foundation ditch base fixed reliable area；Total powerstation is arranged on the C of monitoring criteria control point；
Monitoring point, is used for monitoring foundation pit enclosure structure facial disfigurement, including the multiple reflection units being arranged at foundation pit enclosure structure face, from top to bottom bury underground.
Foundation pit enclosure structure deeply mixing cement-soil pile the most according to claim 1 monitoring system, it is characterised in that: between neighboring reflection device, spacing is 0.5m to 1.0m, and each reflection unit is maintained on same plumb line.
Foundation pit enclosure structure deeply mixing cement-soil pile the most according to claim 1 and 2 monitoring system, it is characterised in that: described reflection unit is affixed to the reflector plate on foundation pit enclosure structure surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620189489.6U CN205449046U (en) | 2016-03-12 | 2016-03-12 | Deep horizontal displacement monitoring system of foundation pit retaining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620189489.6U CN205449046U (en) | 2016-03-12 | 2016-03-12 | Deep horizontal displacement monitoring system of foundation pit retaining structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205449046U true CN205449046U (en) | 2016-08-10 |
Family
ID=56602447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620189489.6U Active CN205449046U (en) | 2016-03-12 | 2016-03-12 | Deep horizontal displacement monitoring system of foundation pit retaining structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205449046U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606066A (en) * | 2016-03-12 | 2016-05-25 | 中国水利水电第七工程局有限公司 | Foundation pit supporting structure deep level displacement monitoring system and method |
| CN114518295A (en) * | 2020-11-19 | 2022-05-20 | 中车株洲电力机车研究所有限公司 | Tower load measuring method, device and system |
-
2016
- 2016-03-12 CN CN201620189489.6U patent/CN205449046U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606066A (en) * | 2016-03-12 | 2016-05-25 | 中国水利水电第七工程局有限公司 | Foundation pit supporting structure deep level displacement monitoring system and method |
| CN114518295A (en) * | 2020-11-19 | 2022-05-20 | 中车株洲电力机车研究所有限公司 | Tower load measuring method, device and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105606066A (en) | Foundation pit supporting structure deep level displacement monitoring system and method | |
| CN108280969B (en) | High-slope surface deformation monitoring and early warning system and early warning method thereof | |
| CN106894821B (en) | It is a kind of originate, the monitoring method of received well and jacking construction | |
| CN108180885B (en) | Automatic monitoring system and method for tunnel deformation | |
| CN103898816B (en) | A kind of city rail precise control net measuring method | |
| CN111998825B (en) | Monitoring and measuring method for shallow buried section of tunnel | |
| CN105043343A (en) | Method for automated measurement of tunnel vault settlement based on laser displacement sensor | |
| CN106679559A (en) | Actual measurement device and method of ultrahigh earth-rock dam internal 3D deformation | |
| CN108999612A (en) | A kind of constructing metro tunnel safety monitoring system Internet-based | |
| CN113802622A (en) | Method for monitoring construction safety of deep foundation pit near railway | |
| CN105865416A (en) | Leveling rod suspended leveling method for settlement monitoring | |
| CN114046770A (en) | Marine settlement observation and measurement method | |
| CN205449046U (en) | Deep horizontal displacement monitoring system of foundation pit retaining structure | |
| CN115637743A (en) | Method for intelligently monitoring deformation during construction of deep and large foundation pit | |
| CN107100213A (en) | Soil disturbance monitoring system and monitoring method of the bridge construction of pile groups to adjacent piles | |
| CN113236260A (en) | Construction monitoring method for all-dimensional shield underpass of existing subway station | |
| CN103741726B (en) | A kind of open caisson settlement measurement metering method | |
| CN207277308U (en) | Bridge construction of pile groups monitors system to the soil disturbance of adjacent piles | |
| CN103410135B (en) | Riverbed level measurement method based on network drill rod detection | |
| CN115478567A (en) | Tunnel open excavation construction monitoring method with underground track penetrating upwards and adjacent to peripheral buildings | |
| Aris et al. | Design and installation for Dam Monitoring Using Multi sensors: A Case Study at Sermo Dam, Yogyakarta Province, Indonesia. | |
| CN113189660B (en) | Method and system for observing array type land time-varying gravity and gradient field | |
| CN112697103A (en) | Method for monitoring ground surface settlement around foundation pit in urban rail transit construction period | |
| CN207923106U (en) | A kind of foundation pit deformation measuring device | |
| Costantino et al. | Structural monitoring with geodetic survey of Quadrifoglio condominium (Lecce) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |