CN209568442U - Foundation pit structure with real-time monitoring and early warning functions - Google Patents
Foundation pit structure with real-time monitoring and early warning functions Download PDFInfo
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- CN209568442U CN209568442U CN201920170530.9U CN201920170530U CN209568442U CN 209568442 U CN209568442 U CN 209568442U CN 201920170530 U CN201920170530 U CN 201920170530U CN 209568442 U CN209568442 U CN 209568442U
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- 230000006870 function Effects 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 title claims description 55
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 70
- 238000010276 construction Methods 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 239000002689 soil Substances 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 14
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical group [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 3
- 238000013461 design Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013501 data transformation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a foundation pit structure with real-time supervision early warning function, including foundation pit body, supporting construction, resistance early warning system and shape memory alloy silk, supporting construction fixes the lateral part at the foundation pit body, and with lateral part ground body fixed connection, the bottom ground body is below the foundation pit body, the resistance early warning system is connected by resistance monitor and alarm electricity and constitutes, partly evenly distributed in the lateral part ground body in a plurality of shape memory alloy silks, another part evenly distributed in the bottom ground body; the two ends of the shape memory alloy wires are connected with the resistance monitor through conducting wires, a plurality of metal ring bodies are wound on each shape memory alloy wire, the intervals among the metal ring bodies are the same, and each metal ring body is wrapped by one concrete block. The utility model discloses can be lower to foundation ditch structure real-time supervision and cost, in case the arbitrary position takes place the problem can in time pinpoint, the staff of being convenient for takes corresponding measure, prevents the emergence of more calamity.
Description
Technical field
The utility model relates to a kind of foundation pit structure, specifically a kind of foundation pit structure with Monitoring and forecasting system in real-time function.
Background technique
Foundation pit is the below ground space excavated for the construction on progress buildings or structures basis, underground buildings or structures,
Also refer to the melt pit that man-hour requirement excavation is applied in building construction, municipal works or underground structure etc..To guarantee foundation pit construction, main body
Underground structure safety and ambient enviroment is without damage and supporting construction, precipitation and the earth excavation taken and backfill, including prospecting,
Design, construction and monitoring etc., are referred to as base pit engineering.Development of foundation pit engineering is the needs of building foundation design, is the underground space
The needs of exploitation and land use, are the needs of subway, municipal administration, piping lane, traffic engineering etc..Current base pit engineering is still in side
It practices the side stage of fumbling, still lacks the guidance of mature technology specification, mainly solved the problems, such as, led with the semi-theoretical method of semiempirical
Deep basal pit accident is caused to happen occasionally, so that the development of deep-foundation pit engineering is constrained, since the destruction of general base pit engineering all has
Omen, thus the strict pit retaining monitoring of progress is extremely important, can understand the stress deformation shape of retaining design in time by monitoring
Condition carries out back analysis to design parameter, to adjust construction parameter, instructs lower step construction, and meeting different feelings can take timely measure, because
This, pit retaining monitoring is to guarantee that base pit engineering is safe and reliable, important measures of economical rationality.
As the important factor in order of pit retaining monitoring, the monitoring project carried out, monitoring point arrangement, monitoring method etc. refer to
Mark is always three keys in field of engineering technology.In terms of monitoring project has instrument monitoring and walkaround inspection two, in each single item
Appearance has very important effect.The arrangement of base pit engineering monitoring point should farthest reflect internal force and the deformation of monitoring object
Virtual condition and its variation tendency, and monitoring requirement should be met.Monitoring method is mainly monitored by dedicated instrument or special messenger
The mechanical parameters such as deformation, internal force, soil pressure and water pressure, instrument monitoring mainly carry out internal force and deformation monitoring, instrument using instrument
The height of device quality decides the safety of base pit engineering, and the monitoring data provided are more safe and reliable, and walkaround inspection is by special
People is mainly integrated by the deformation of structure and provides judgement, and comparatively, human factor is larger.
Due to Geological condition, foundation pit scheme, complexity of building structure itself etc., foundation pit construction causes neighboring buildings
Impaired reason and damage type is complicated and diversified, but this is all nothing more than being due to retaining support structure or foundation pit ground
Caused by deformation or destruction.It to find out its cause, on the one hand no doubt there is the reason of design and construction aspect, and is main, another party
Face is also the lag and deficiency of theoretical research so that Design of Excavation Project otherwise it is too cautious cause it is unnecessary waste or be
Excessive saving and bring serious security risk.It can be seen that the reason of either practicing or theoretical factor, reinforce
Engineering monitoring is particularly important, at present monitoring means used by traditional base pit engineering, all cannot concurrently reach it is safe and accurate,
Real-time and low cost feature.
Summary of the invention
In view of the above-mentioned problems of the prior art, the utility model provides a kind of base with Monitoring and forecasting system in real-time function
Structure is cheated, has structure simple, it is easy for construction, can be to foundation pit structure real-time monitoring and cost is relatively low, once any position occurs
Problem can be positioned promptly and accurately, taken corresponding measure convenient for staff, prevented the generation of bigger disaster.
To achieve the goals above, the technical solution adopted in the utility model is: one kind having the function of Monitoring and forecasting system in real-time
Foundation pit structure, including foundation pit ontology, supporting construction, resistance early warning system and shape-memory alloy wire,
The supporting construction is fixed on the side of foundation pit ontology, and is fixedly connected with side Rock And Soil, under foundation pit ontology
Side is bottom rock-soil body,
The resistance early warning system is made of electrical resistance monitoring instrument and alarm electrical connection,
The shape-memory alloy wire be it is multiple, a part is evenly distributed on side ground in multiple shape-memory alloy wires
In vivo, another part is evenly distributed in bottom rock-soil body；The both ends of multiple shape-memory alloy wires pass through conducting wire and resistance
Monitor connects, and winds multiple metal ring bodies, and the spacing phase between each metal ring body on each shape-memory alloy wire
Together, each metal ring body is wrapped up by a concrete block respectively.
Further, the spacing between adjacent shapes memory alloy wire is not less than 0.5m.
Further, the radial width of the concrete block is 3~5 times of shape-memory alloy wire diameter.
Further, the shape-memory alloy wire is Nitinol.
Further, the spacing between the multiple metal ring body is 1m.
Compared with prior art, the utility model uses foundation pit ontology, supporting construction, resistance early warning system and shape memory
Alloy wire combines mode, has the advantages that
1, safe and reliable
The utility model is in addition to support engineering, Groundwater Control and to answer the monitoring of (pressure) power etc. outer, builds since foundation pit structure increases
Transformation safe early warning system, as long as unstability or the deformation of bottom seepage flow, corresponding position shape-memory alloy wire occur for certain position
Resistance variations will be embodied by early warning system, if resistance value is more than limit value, system will provide alarm signal, simultaneously
Entirely early warning system is influenced small by temperature, weather, place etc., ensure that the safe and reliable of foundation pit structure.
2, real-time
Early warning system used by the utility model, mainly using shape-memory alloy wire resistance with its strain or
The variation of state and change to realize that structure from monitoring purpose, is not needed to data transformation analysis, once there is danger in foundation pit somewhere
Feelings, early warning system can provide warning message at the first time, while can understand the stress deformation of retaining design in time by monitoring
Position, back analysis is carried out to design parameter, to adjust construction parameter, instructs lower step construction, meeting different feelings can take timely measure,
And enough escape times have been won for staff on the scene.
3, accuracy
The shape-memory alloy wire being placed in foundation pit is accurately determined like coordinate points to find dangerous situation position in time and providing
Position, and every shape-memory alloy wire is close to Rock And Soil like a foil gauge, and the moment measures the deformation of Rock And Soil
Situation, while the invention also avoids the error that conventional measuring equipment generates during measurement data.
4, durability
By the used shape-memory alloy wire of the utility model have biggish resistivity, restoring force, deformation and well
Corrosion resistance, preferable plasticity, the advantages that higher intensity and fatigue life are long and resistance such environmental effects are small so that
The durability of marmem base pit engineering is higher.
5, economy
After the utility model early warning system mainly utilizes shape-memory alloy wire to deform, reached according to the variation of its resistance
Purpose, compared to conventional foundation pit deformation monitoring or monitoring of leakage special measurement instrument, as displacement meter, sedimentometer, hydrolevelling device,
The technological means such as GPS measurement and pressure-measuring pipe, osmometer, cost is much lower, and the invention construction technology is simple, operation side
Just.
6, applied widely
Special measurement instrument monitoring is replaced with shape-memory alloy wire, expands answering for early warning system foundation pit significantly
With range, so that such early warning system is applicable not only to the short-term deformation monitoring of all kinds of base pit engineerings, and it is also applied for all kinds of
Structure (building) builds the long-term deformation monitoring of object.
Detailed description of the invention
Fig. 1 is the schematic view of the mounting position of the utility model；
Fig. 2 is the work progress flow chart of the utility model；
Fig. 3 is that metal ring body I is mounted on the schematic diagram on shape-memory alloy wire I in the utility model；
Fig. 4 is the structural schematic diagram of concrete block I in the utility model；
Structural schematic diagram when Fig. 5 is the supporting construction generation supporting unstability of the utility model；
Fig. 6 is deformation-resistance value relational graph of shape-memory alloy wire in the utility model.
In figure: 1, shape-memory alloy wire, 2, metal ring body, 3, concrete block, 4, conducting wire, 5, supporting construction, 6, resistance
Early warning system, 7, bottom rock-soil body, 8, side Rock And Soil.
Specific embodiment
The utility model will be described further below.
As shown, a kind of foundation pit structure with Monitoring and forecasting system in real-time function, including foundation pit ontology, supporting construction 5, electricity
Early warning system 6 and shape-memory alloy wire 1 are hindered,
The supporting construction 5 is fixed on the side of foundation pit ontology, and is fixedly connected with side Rock And Soil 8, foundation pit ontology
Lower section is bottom rock-soil body 7,
The resistance early warning system 6 is made of electrical resistance monitoring instrument and alarm electrical connection,
The shape-memory alloy wire 1 be it is multiple, a part is evenly distributed on side rock in multiple shape-memory alloy wires 1
The soil body 8 is interior, another part is evenly distributed in bottom rock-soil body 7；The both ends of multiple shape-memory alloy wires 1 pass through conducting wire 4
It is connect with electrical resistance monitoring instrument, multiple metal ring bodies 2 is wound on each shape-memory alloy wire 1, and between each metal ring body 2
Spacing it is identical, each metal ring body 2 is wrapped up by a concrete block 3 respectively.
Further, the spacing between adjacent shapes memory alloy wire 1 is not less than 0.5m.Institute both can guarantee using this spacing
The monitoring coverage density needed, and can also prevent distance from closely causing very much the short-circuit conditions between adjacent shape-memory alloy wire 1；
If design requirement must be closer, local insulation processing is done to the surface of shape-memory alloy wire 1 when necessary.
Further, the radial width of the concrete block 3 is 3~5 times of 1 diameter of shape-memory alloy wire.It can increase in this way
Contact area between big concrete block 3 and bottom rock-soil body 7 or side Rock And Soil 8, and then increasing friction force, prevent in bottom
Rock And Soil 7 or side Rock And Soil 8 when deformation occurs shape-memory alloy wire 1 deviate from by external force.
Further, the shape-memory alloy wire 1 is Nitinol.Using this alloy, because it is with biggish electricity
The characteristics such as resistance rate, restoring force and deformation, higher corrosion resistance, higher intensity, preferable plasticity additionally have specific gravity
Small, the advantages that fatigue life is long and such environmental effects are small.
Further, the spacing between the multiple metal ring body 2 is 1m.
The working process of the utility model is as follows: the deformation quantity-that tests obtain shape-memory alloy wire 1 is carried out first
Resistance value relationship (as shown in Figure 6), and the location of each shape-memory alloy wire 1 is marked and is numbered, while
(i.e. the deformation quantity of any shape memory alloy wire 1 reaches the deformation quantity threshold value of setting shape-memory alloy wire 1 in electrical resistance monitoring instrument
Electrical resistance monitoring instrument can control alarm and issue early warning sound after threshold value), then the electrical resistance monitoring instrument in resistance early warning system 6 is real
When measure the resistance value of each shape-memory alloy wire 1, when unstability occurs for side Rock And Soil 8 or supporting construction 5, (i.e. foundation pit is lost
When surely) accident of seepage flow deformation (i.e. foundation pit bottom seepage flow deforms) occurs for (as shown in Figure 5) or bottom rock-soil body 7, distance should at this time
The stress and deformation amount of a nearest shape-memory alloy wire 1 of place is maximum, so as to cause the resistance value of the shape-memory alloy wire 1
Variation is maximum, the number and resistance change situation for changing maximum shape-memory alloy wire 1 is obtained by electrical resistance monitoring instrument, so
Afterwards according to known deformation quantity-resistance value relationship, the respective deformation quantity of shape-memory alloy wire 1, the shape that will be obtained can be obtained
Variable is compared with deformation quantity threshold value, if the value obtained is more than or equal to threshold value, electrical resistance monitoring instrument control alarm issues pre-
Alert prompt tone, while the location of the shape-memory alloy wire 1 being shown；Staff can know in time according to prompt tone
Situation is known, then according to the resistance change situation of the location of the shape-memory alloy wire and other shape-memory alloy wires
The measure of suing and labouring can be taken to corresponding position in time, prevent the generation of bigger disaster.
The construction method of the utility model, specific steps are as follows:
1) production of metal ring body 2: ring body is made using known metal material, the diameter of ring body itself is shape memory conjunction
1~2 times of 1 diameter of spun gold, the interior diameter that ring body surrounds are 3~4 times of 1 diameter of shape-memory alloy wire；
2) assembly of metal ring body 2: being heat-treated shape-memory alloy wire 1, and martensite shape is at after processing
State winds a metal ring body every 1m on shape-memory alloy wire 1 at this time；
3) it preparation of construction, foundation pit supporting project building and Groundwater Control: before going into operation, carries out technology, equipment, haul, put
Then the preparation of construction of sample and verification starts to carry out foundation pit supporting project building and the construction of Groundwater Control, the last earthwork is opened
It is foundation pit after digging；
4) merging of shape-memory alloy wire 1:
(I) it positions: constructing by the Spreading requirements for the shape-memory alloy wire 1 being pre-designed in the peripheral position of foundation pit
Unwrapping wire, marks each bore position, and hole location tolerance is ± 15mm；
(II) it drills: drilling to side Rock And Soil 8, boring direction and foundation pit sideline are perpendicular；Aperture is shape note
3 times to 5 times for recalling alloy wire 1；Drilling depth, which will ensure to be located at from the farther away nose end in foundation pit sideline, stablizes side Rock And Soil range
It is interior；
(III) borehole cleaning: with high-pressure air hose by drilling dust and sundries blow out；
(IV) place shape-memory alloy wire 1: an embedded in hole enters shape-memory alloy wire 1, work progress wherein
There is not distortion, wrinkle in middle its continuity of holding, and tightening shape-memory alloy wire 1 makes its stress be straightened, tense, to guarantee
On its center line uniform, smooth, positioned at drilling, while being fixed using locator；Later, from bottom to up or from it is inner to
Outside, to concrete perfusion at 2 position of metal ring body on shape-memory alloy wire 1, concrete block 3 is formed, when concrete block 3
After intensity reaches 75% or more, at design requirement filling perforation to another metal ring body 2, it is complete to repeat the above process concrete perfusion
At the preparation of another concrete block 3, concrete block 3 all on the shape-memory alloy wire 1 is completed until pouring；
(V) step (IV) is repeated successively to shape-memory alloy wire 1 is placed respectively in each drilling, until completing all
Drilling casting；
5) it forms the foundation pit of Monitoring and forecasting system in real-time function: electrical resistance monitoring instrument is connect with alarm, it then will by conducting wire 4
Each 1 both ends of shape-memory alloy wire are connected to electrical resistance monitoring instrument, complete the foundation pit construction of Monitoring and forecasting system in real-time function.
The utility model is by the basis of traditional monitoring technology means, what is be made of originally special measurement instrument
Monitoring means is changed to shape-memory alloy wire 1 to replace, and is had the special feature that by means of marmem itself, i.e., biggish electricity
The characteristics such as resistance rate, restoring force and deformation, higher corrosion resistance, higher intensity, preferable plasticity additionally have specific gravity
Small, the advantages that fatigue life is long and such environmental effects are small, and then greatly reduce the limitation of early warning system in the application, institute
Just early warning and positioning need not be provided by special measurement instrument with the early warning system of base pit engineering, but simply by shape
Memory alloy wire 1 achieves the goal.Meanwhile the controlling alarm of early warning system translates into the state to shape-memory alloy wire 1
Processing, and the processing of state only need to need to carry out certain heat-machining operation i.e. to Memory Alloy member according to engineering
Can, in this way for site operation, construction technology and equipment are simple and convenient to operate, effect is safe and reliable.It can be seen that this
Utility model not only increases safety, accuracy, durability and the scope of application of base pit engineering, and is also manifested by its construction
Simple process, the advantages such as reliable, investment is low with cost expense.Therefore, relatively traditional construction technology, the utility model, which has, to be applied
The advantages such as the safety of work is reliable, and accuracy is high, and cost is low carry out structure redesign using memorial alloy, make early warning
Performance, applicability of system etc. are very significantly improved and improve.
Claims (5)
1. a kind of foundation pit structure with Monitoring and forecasting system in real-time function, which is characterized in that including foundation pit ontology, supporting construction, electricity
Early warning system and shape-memory alloy wire are hindered,
The supporting construction is fixed on the side of foundation pit ontology, and is fixedly connected with side Rock And Soil, and the lower section of foundation pit ontology is
Bottom rock-soil body,
The resistance early warning system is made of electrical resistance monitoring instrument and alarm electrical connection,
The shape-memory alloy wire be it is multiple, a part is evenly distributed on side Rock And Soil in multiple shape-memory alloy wires
Interior, another part is evenly distributed in bottom rock-soil body；The both ends of multiple shape-memory alloy wires pass through conducting wire and resistance is supervised
Instrument connection is surveyed, winds multiple metal ring bodies on each shape-memory alloy wire, and the spacing between each metal ring body is identical,
Each metal ring body is wrapped up by a concrete block respectively.
2. a kind of foundation pit structure with Monitoring and forecasting system in real-time function according to claim 1, which is characterized in that adjacent shape
Spacing between shape memory alloys silk is not less than 0.5m.
3. a kind of foundation pit structure with Monitoring and forecasting system in real-time function according to claim 1, which is characterized in that described mixed
The radial width of solidifying soil block is 3~5 times of shape-memory alloy wire diameter.
4. a kind of foundation pit structure with Monitoring and forecasting system in real-time function according to claim 1, which is characterized in that the shape
Shape memory alloys silk is Nitinol.
5. a kind of foundation pit structure with Monitoring and forecasting system in real-time function according to claim 1, which is characterized in that described more
Spacing between a metal ring body is 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920170530.9U CN209568442U (en) | 2019-01-31 | 2019-01-31 | Foundation pit structure with real-time monitoring and early warning functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920170530.9U CN209568442U (en) | 2019-01-31 | 2019-01-31 | Foundation pit structure with real-time monitoring and early warning functions |
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| Publication Number | Publication Date |
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| CN209568442U true CN209568442U (en) | 2019-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853578A (en) * | 2019-01-31 | 2019-06-07 | 徐州工程学院 | Foundation pit structure with real-time monitoring and early warning functions and construction method thereof |
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2019
- 2019-01-31 CN CN201920170530.9U patent/CN209568442U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853578A (en) * | 2019-01-31 | 2019-06-07 | 徐州工程学院 | Foundation pit structure with real-time monitoring and early warning functions and construction method thereof |
| CN109853578B (en) * | 2019-01-31 | 2024-01-30 | 徐州工程学院 | Foundation pit structure with real-time monitoring and early warning functions and construction method thereof |
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Granted publication date: 20191101 Termination date: 20210131 |