CN204530796U - A kind of system for the monitoring of base pit engineering fender post Horizontal Displacement - Google Patents
A kind of system for the monitoring of base pit engineering fender post Horizontal Displacement Download PDFInfo
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- CN204530796U CN204530796U CN201520061227.7U CN201520061227U CN204530796U CN 204530796 U CN204530796 U CN 204530796U CN 201520061227 U CN201520061227 U CN 201520061227U CN 204530796 U CN204530796 U CN 204530796U
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- bracing wire
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- displacement sensor
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Abstract
For a system for base pit engineering fender post Horizontal Displacement monitoring, comprising: stay-supported type displacement sensor (1), PVC sleeve pipe (2), bracing wire (3), cable (4), data acquisition unit (5); PVC sleeve pipe (2) both ends open, bracing wire (3) is freely placed in sleeve pipe (2), the free end of bracing wire (3) is fixed on fender post stake top, the other end is connected to stay-supported type displacement sensor (1), stay-supported type displacement sensor (1) for by bracing wire (3) measure due to the earthwork develop cause fender post stake top generation horizontal movement; Data acquisition unit (5) is connected with stay-supported type displacement sensor (1) by cable.It is simple that this utility model has structure, the feature that reliability is high and easy to implement, will greatly improve monitoring efficiency under the prerequisite ensureing precision.
Description
Technical field
The utility model belongs to technical field of civil engineering, relates to a kind of system for the monitoring of base pit engineering fender post Horizontal Displacement.
Background technology
Along with the development of urban construction, thing followed Foundation Pit Construction also gets more and more, and its cutting depth is also increasing.Due to the complexity of underground soil mass property, construction environment, only determine design and constructure scheme according to geological mapping data, often containing many uncertain factors, the requisite important step of engineering construction has been become to the monitoring of the environment caused in work progress, adjacent structure, underground installation change, also refer to requisite measure that correcting is really constructed, that avoid accident to occur, be a kind of information technology simultaneously.Current, the design of pit retaining monitoring and engineering, the same three basic elements being listed in deep-foundation pit engineering quality assurance of constructing.
Current base pit engineering technology for deformation monitoring is very ripe, is the general gimmick of Horizontal Displacement monitoring with total station survey.But using total powerstation to carry out monitoring needs many people to coordinate, and requires high to operating personnel's technical level.And surveying work is easily subject to the impact of site obstructions, many factors causes surveying work efficiency lower.
Utility model content
The purpose of this utility model is to provide a kind of simple to operate, quick, does not restrict by site obstructions, the system of efficient monitoring base pit engineering fender post Horizontal Displacement.Overcome above-mentioned deficiency, solve the efficiency of existing pit retaining monitoring technology.
To achieve these goals, the technical solution adopted in the utility model is: design a kind of system for the monitoring of base pit engineering fender post Horizontal Displacement.
This system for the monitoring of base pit engineering fender post Horizontal Displacement comprises:
Stay-supported type displacement sensor (1), PVC sleeve pipe (2), bracing wire (3), cable (4), data acquisition unit (5); It is characterized in that: PVC sleeve pipe (2) both ends open, bracing wire (3) is freely placed in sleeve pipe (2), the free end of bracing wire (3) is fixed on fender post stake top, the other end is connected to stay-supported type displacement sensor (1), stay-supported type displacement sensor (1) for by bracing wire (3) measure due to the earthwork develop cause fender post stake top generation displacement; Data acquisition unit (5) is connected with stay-supported type displacement sensor (1) by cable.
Bracing wire (3) material is the metal-cored silk of high flexibility, and data acquisition unit (5) is connected and reading with stay-supported type displacement sensor (1) by cable (4).
Described PVC sleeve pipe need have certain rigidity, perpendicular to foundation ditch horizontal arrangement.
When measuring by this monitoring system, be fixed on outside foundation pit deformation influence basin by stay-supported type displacement sensor (1), bracing wire (3) is fixed on fender post stake top through PVC sleeve pipe (2).When fender post stake top produces displacement, pull coupled bracing wire (3), bracing wire (3) drives stay-supported type displacement sensor (1) transmission mechanism and sensing element synchronous axial system; When displacement is oppositely moved, the revolving gear of sensor internal by automatic drawing back bracing wire (3), and is stretched in receipts process in bracing wire (3) and is kept its tension force constant, thus export one with the directly proportional signal of telecommunication of rope amount of movement.By data acquisition unit (5), can be shift value by transform electrical signals.Front and back record shift value for twice and subtract each other, and can obtain the displacement of this measuring point.
According to monitoring scheme requirement, the fender post of monitoring Horizontal Displacement is needed to arrange native system to base pit engineering.Monitoring frequency is to each measuring point image data one by one according to the rules, can obtain the displacement at pile top situation of whole bracing of foundation pit stake.
Beneficial effect
Testing arrangement good economy performance, to technician's operant level require low, affected by environment little.In the monitoring of Horizontal Displacement, the surveying work after having layouted only needs a people to complete, and greatly improves surveying work efficiency.Measuring accuracy reaches 0.1mm, can meet the required precision of Horizontal Displacement monitoring.
Accompanying drawing explanation
Fig. 1, utility model works schematic diagram;
The relative motion relation figure of Fig. 2, displacement meter bracing wire and sleeve pipe;
Fig. 3, Horizontal Displacement monitoring system layout plan view
Fig. 4, displacement meter bracing wire and sleeve pipe orthogonal view.
In figure: 1, stay-supported type displacement sensor; 2, PVC sleeve pipe; 3, bracing wire; 4, cable; 5, data acquisition unit; 6, fender post.
Detailed description of the invention
The present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
PVC sleeve pipe (2) two ends are penetrating, and bracing wire is passed in PVC sleeve pipe, and both guarantees can free relative movement; Determine the length of PVC sleeve pipe according to the influence basin of excavation of foundation pit, guarantee that stay-supported type displacement sensor can be arranged in outside foundation ditch influence basin; Stay-supported type displacement sensor is fixed on the object outside influence basin by four, bottom fixing hole; Bracing wire (3) adopts the metal-cored silk of high flexibility, and bracing wire (3) end is fixed on fender post top, and the other end is connected with stay-supported type displacement sensor 1.Arrange that effect is as Fig. 1.
Before base pit engineering fender post construction complete and earthwork exploitation, require to need the fender post of monitoring Horizontal Displacement to arrange native system to base pit engineering according to monitoring scheme, native system arranges that number can be multiple, and arrange 3 in the present embodiment, concrete condition as shown in Figure 3.Earthwork exploitation will cause fender post stake top to produce displacement, thus cause bracing wire (3) to be stretched or shrink, the signal of telecommunication that stay-supported type displacement sensor (1) output one is proportional with bracing wire (3) displacement.Data acquisition unit (5) connection cable (4) can record displacement at pile top amount.According to specific Monitoring frequency to each measuring point image data one by one, the displacement at pile top dynamic change situation of whole bracing of foundation pit stake can be obtained.
Claims (1)
1., for a system for base pit engineering fender post Horizontal Displacement monitoring, equipment needed thereby comprises: stay-supported type displacement sensor (1), PVC sleeve pipe (2), bracing wire (3), cable (4), data acquisition unit (5); It is characterized in that: PVC sleeve pipe (2) both ends open, bracing wire (3) is freely placed in PVC sleeve pipe (2), the free end of bracing wire (3) is fixed on fender post stake top, the other end is connected to stay-supported type displacement sensor (1), stay-supported type displacement sensor (1) for by bracing wire (3) measure due to the earthwork develop cause fender post stake top generation horizontal movement; Data acquisition unit (5) is connected with stay-supported type displacement sensor (1) by cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061227.7U CN204530796U (en) | 2015-01-28 | 2015-01-28 | A kind of system for the monitoring of base pit engineering fender post Horizontal Displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061227.7U CN204530796U (en) | 2015-01-28 | 2015-01-28 | A kind of system for the monitoring of base pit engineering fender post Horizontal Displacement |
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| CN204530796U true CN204530796U (en) | 2015-08-05 |
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| CN201520061227.7U Active CN204530796U (en) | 2015-01-28 | 2015-01-28 | A kind of system for the monitoring of base pit engineering fender post Horizontal Displacement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586994A (en) * | 2016-01-04 | 2016-05-18 | 大连大学 | Monitoring device and monitoring method for horizontal displacement of pile tip of retaining pile for foundation pit |
| CN108917536A (en) * | 2018-04-20 | 2018-11-30 | 中国十七冶集团有限公司 | A kind of deep basal pit horizontal displacement monitoring warning device and its operating method |
| CN113605466A (en) * | 2021-07-29 | 2021-11-05 | 中国十七冶集团有限公司 | Safety monitoring and early warning method for side slope of deep foundation pit near lake |
-
2015
- 2015-01-28 CN CN201520061227.7U patent/CN204530796U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586994A (en) * | 2016-01-04 | 2016-05-18 | 大连大学 | Monitoring device and monitoring method for horizontal displacement of pile tip of retaining pile for foundation pit |
| CN108917536A (en) * | 2018-04-20 | 2018-11-30 | 中国十七冶集团有限公司 | A kind of deep basal pit horizontal displacement monitoring warning device and its operating method |
| CN108917536B (en) * | 2018-04-20 | 2020-08-21 | 中国十七冶集团有限公司 | Deep foundation pit horizontal displacement monitoring and alarming device and operation method thereof |
| CN113605466A (en) * | 2021-07-29 | 2021-11-05 | 中国十七冶集团有限公司 | Safety monitoring and early warning method for side slope of deep foundation pit near lake |
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