CN208685582U - A kind of bottom ground heave amount monitoring device - Google Patents
A kind of bottom ground heave amount monitoring device Download PDFInfo
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- CN208685582U CN208685582U CN201821216379.XU CN201821216379U CN208685582U CN 208685582 U CN208685582 U CN 208685582U CN 201821216379 U CN201821216379 U CN 201821216379U CN 208685582 U CN208685582 U CN 208685582U
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- casing
- nipple
- monitoring device
- bottom ground
- amount monitoring
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model relates to the foundation pit construction auxiliary device field in civil engineering, specifically a kind of bottom ground heave amount monitoring device.Including the gaging hole being opened in excavation area along the vertical direction, the casing being plugged in gaging hole and the tape being threaded through in casing；Casing includes more nipples being sequentially connected in series, the observation window made of transparent material is embedded on the tube wall of nipple, it is rammed between the lower end and Foundation Pit bottom absolute altitude face for being located at gaging hole in casing and is equipped with Radix Notoginseng earthen backfill layer, steel taper measuring point is inserted in the center of Radix Notoginseng earthen backfill layer, the lower end of tape is equipped with the magnet connecting by suction-operated with the upper end of steel taper measuring point, and upper end is distributed in other than sleeve upper end and is connected with footage disk.The utility model can convenient, fast, efficient, accurate measurement bottom ground heave amount, avoid carrying around heavy labor brought by slide calliper rule, improve measurement accuracy.
Description
Technical field
The utility model relates to the foundation pit construction auxiliary device field in civil engineering, specifically a kind of bottom of foundation ditch
Uplift capacity monitoring device.
Background technique
With the rapid development of social economy, the engineerings such as urban skyscraper, underground railway track traffic emerge one after another, and underground is built
That builds emerges in multitude, and also brings more and more deep-foundation pit engineerings.In Excavation Process, on the outside of barricade the soil body self weight and
When external loads are more than bottom of foundation ditch following foundation bearing capacity, soil body equilibrium state is destroyed in ground, so that crater wall occur
The phenomenon that flowing of soil, hole subsoil swell upwards, referred to as pit accident.The size of bottom ground heave amount is to a certain extent
The stable state of foundation pit is reflected, therefore, pit accident is that must measure in Construction of Deep Excavation Engineering.
The conventional survey method of pit accident is, using PVC casing retaining wall is passed through behind the complete hole of drilling machine, to set survey in the prior art
Point is put into wooden or steel slide calliper rule in casing, passes through level or total station survey pit accident.This way has following lack
Point: 1, wooden or steel slide calliper rule quality is larger, and repeatedly slide calliper rule are placed in measurement, and contact hole bottom measuring point is easy to cause measuring point to sink, and produces
Raw larger measurement error；2, the slide calliper rule in casing cannot be read, and when excavation of foundation pit certain altitude needs to measure uplift capacity, be needed
Sleeve upper end is destroyed, to read the reading for exposing excavation face part on slide calliper rule, prevent casing is from being recycled；3, it measures
Instrument is complex, convenient, fast, efficient cannot obtain bottom ground heave amount.
Utility model content
The utility model is intended to provide one kind can convenient, fast, efficient, precise measurement bottom ground heave amount foundation pit bottom
Portion's uplift capacity monitoring device.
In order to solve problem above, the technology employed by the present utility model is a kind of bottom ground heave amount monitors
Device including the gaging hole being opened in excavation area along the vertical direction, the casing being plugged in gaging hole and is threaded through
Tape in casing；The lower end of gaging hole is provided with the lower section in Foundation Pit bottom absolute altitude face, and casing includes more short circuits being sequentially connected in series
It manages, is fixedly connected between any adjacent two nipple by helicitic texture, along the length of nipple on the tube wall of nipple
Direction is equipped with strip-shaped hole, and the observation window made of transparent material is embedded in strip-shaped hole, is located under gaging hole in casing
It is rammed between end and Foundation Pit bottom absolute altitude face and is equipped with Radix Notoginseng earthen backfill layer, be inserted with steel cone in the center of Radix Notoginseng earthen backfill layer
Shape measuring point, the lower end of tape are equipped with the magnet connecting by suction-operated with the upper end of steel taper measuring point, and upper end is distributed in set
Other than pipe upper end and it is connected with footage disk.
Preferably, inner screw sheath is equipped in the nozzle of nipple one end, the nozzle position of the other end is equipped with and adjacent short circuit
The male connection that the inner screw sheath of pipe nozzle position is coupled.
Preferably, inner screw sheath and male connection distribution, observation window of the strip-shaped hole on nipple are distributed in short circuit
On pipe between inner screw sheath and male connection.
Preferably, card slot, the two sides difference of observation window are respectively equipped on being shorted tube wall and positioned at the two sides of strip-shaped hole
It is fastened in corresponding card slot.
Preferably, nipple is made of PVC material.
Beneficial effect
The utility model passes through the steel taper measuring point set in gaging hole bottom, grand using the tape measurement foundation pit of carry magnet
Amount is played, uplift capacity can be simply calculated by calculating formula.Bottom hole measuring point caused by when avoiding multiple calliper to measure settles,
Have the characteristics that measurement accuracy height, structure are simple and convenient to operate.
The casing of the utility model is detachably connected by more nipples using helicitic texture, when excavation of foundation pit a to depthkeeping
After degree, more nipples of sleeve upper end can be removed, the casing to avoid protrusion ground causes shadow to the excavation construction of foundation pit
It rings.Nipple under removing is collected, recyclable suitable for next uplift capacity measurement point by splicing.
The observation window made of transparent material is equipped on any one nipple, construction personnel can pass through observation window
Accurately obtain respective heights of the ground on tape.Observation window is detachably connected in a manner of being embedded simultaneously is opened in short circuit
The cooperation between inner screw sheath and male connection in strip-shaped hole on pipe, neither between influence nipple and adjacent nipple
Installation, and observation window long term wear can be worked as, transparency reduces the impacted rear replacement in time of sight, extends the utility model totality
Service life.
Detailed description of the invention
Fig. 1 is the longitudinal sectional drawing for being provided with the excavation area of the utility model before excavation；
Fig. 2 is the longitudinal sectional drawing for being provided with the excavation area of the utility model after excavating certain depth；
Fig. 3 is the schematic perspective view that tube portion is shorted in the utility model；
Marked in the figure: 1, footage disk, 2, casing, 201, inner screw sheath, 202, card slot, 203, male connection, 204, sight
Examine window, 205, nipple, 3, gaging hole, 4, excavation area, 5, tape, 6, magnet, 7, Foundation Pit bottom absolute altitude face, 8, steel
Taper measuring point, 9, Radix Notoginseng earthen backfill layer.
Specific embodiment
As shown in Figure 1 to Figure 3, a kind of bottom ground heave amount monitoring device of the utility model, including along the vertical direction
The gaging hole 3 being opened in excavation area 4, the casing 2 being plugged in gaging hole 3 and the tape 5 being threaded through in casing 2.
The cutting depth for surveying hole is lower than the Foundation Pit bottom absolute altitude face 7 that design of foundation pit requires.It is deep that the length of casing 2 is longer than survey hole
Degree, bottom end is concordant with hole lower end is surveyed, and top exposes to other than initial excavation face, so that sundries be avoided to enter shadow in casing 2
Ring measurement result.
For convenient for being recycled and not influencing excavation, the casing 2 of the utility model includes being sequentially connected in series and adopting
The more nipples 205 made of PVC wear-resistant material pass through the fixed company of helicitic texture between any adjacent two nipple 205
It connects.Inner screw sheath 201 is equipped in the nozzle of 205 one end of nipple, the nozzle position of the other end is equipped with and adjacent nipple 205
The male connection 203 that the inner screw sheath 201 of nozzle position is coupled, inner screw sheath 201 and male connection 203 and short circuit
It is integrally formed between pipe 205 with proof strength.In application process, after excavation of foundation pit to certain depth, spiral shell can be passed through
Line structure will easily expose to the too long nipple 205 of excavation face and remove, and so that next measurement point continues to use, and not influence
The normal constructions such as normal personnel's walking, vehicle dealing in excavation face.
It is equipped with strip-shaped hole along the length direction of nipple 205 on the tube wall of nipple 205, and strip-shaped hole runs through nipple
201 pipe 2 of inner screw sheath and male connection 203 on 205 are distributed.Two sides on nipple 205 positioned at strip-shaped hole are set respectively
Set card slot 202, be embedded the two sides of observation window 204 can in sliding slot and be located at inner screw sheath 201 and male connection 203 it
Between, to not had an impact between the interconnection short circuit head.In the application, user of service can be accurate by observation window 204
Correspondence depth of its excavation face on tape 5 after excavation certain depth.
It is rammed between the lower end and Foundation Pit bottom absolute altitude face 7 for being located at gaging hole 3 in casing 2 and is equipped with Radix Notoginseng earthen backfill layer 9, three
The center of seven earthen backfill layers 9 is inserted with steel taper measuring point 8, and the lower end of tape 5 is equipped with is bored by suction-operated and steel
The magnet 6 of the upper end connection of shape measuring point 8, upper end is distributed in other than 2 upper end of casing and is connected with footage disk 1.
Pit accident measuring method is carried out by the utility model are as follows: firstly, in some excavation of foundation pit of excavation of foundation pit
The initial excavation face of construction area 4 drills to obtain gaging hole 3, and the depth of gaging hole 3 is higher than Foundation Pit bottom absolute altitude face 7 to initial excavation face
Depth H is implanted into 2 retaining wall of casing in gaging hole 3；Secondly, backfilling Radix Notoginseng earthen backfill layer 9 in drilling, and compaction in layers is to foundation pit
Bottom absolute altitude face 7 is cheated, steel taper measuring point 8 is set in Radix Notoginseng earthen backfill layer 9；It then, will be soft after excavating certain depth h
One end of 5 carry magnet 6 of ruler is put into casing 2, after magnet 6 sucks steel taper measuring point 8, is smoothed out with the fingers straight tape 5, is surveyed by tape 5
Measure the height a in Foundation Pit bottom absolute altitude face 7 to excavation face；Finally, passing through calculating formula: pit accident amount=Foundation Pit bottom absolute altitude face 7 to
Initial excavation face depth H-Foundation Pit bottom absolute altitude face 7 to construction surface height a- cutting depth (h), is calculated pit accident amount.
Claims (5)
1. a kind of bottom ground heave amount monitoring device, it is characterised in that: including being opened in excavation along the vertical direction
Gaging hole (3), the casing (2) being plugged in gaging hole (3) in area (4) and the tape (5) being threaded through in casing (2)；Gaging hole (3)
Lower end be provided with the lower section in Foundation Pit bottom absolute altitude face (7), casing (2) includes more nipples (205) being sequentially connected in series, arbitrarily
It is fixedly connected between adjacent two nipples (205) by helicitic texture, along nipple on the tube wall of nipple (205)
(205) length direction is equipped with strip-shaped hole, and the observation window (204) made of transparent material is embedded in strip-shaped hole, is being covered
It manages to ram between the lower end and Foundation Pit bottom absolute altitude face (7) that are located at gaging hole (3) in (2) and is equipped with Radix Notoginseng earthen backfill layer (9), in Radix Notoginseng soil
The center of backfill layer (9) is inserted with steel taper measuring point (8), and the lower end of tape (5), which is equipped with, passes through suction-operated and steel
The magnet (6) of the upper end connection of taper measuring point (8), upper end is distributed in other than casing (2) upper end and is connected with footage disk (1).
2. a kind of bottom ground heave amount monitoring device according to claim 1, it is characterised in that: nipple (205) one
Inner screw sheath (201) are equipped in the nozzle at end, the nozzle position of the other end is equipped with interior with adjacent nipple (205) nozzle position
The male connection (203) that thread bush (201) is coupled.
3. a kind of bottom ground heave amount monitoring device according to claim 2, it is characterised in that: strip-shaped hole is through short circuit
The inner screw sheath (201) and male connection (203) distribution, observation window (204) managed on (205) are distributed on nipple (205)
Between inner screw sheath (201) and male connection (203).
4. a kind of bottom ground heave amount monitoring device according to claim 3, it is characterised in that: in nipple (205)
It is respectively equipped with card slot (202) on tube wall and positioned at the two sides of strip-shaped hole, the two sides of observation window (204) are fastened on corresponding card respectively
In slot (202).
5. a kind of bottom ground heave amount monitoring device according to claim 1, it is characterised in that: nipple (205) is adopted
It is made of PVC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216379.XU CN208685582U (en) | 2018-07-30 | 2018-07-30 | A kind of bottom ground heave amount monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821216379.XU CN208685582U (en) | 2018-07-30 | 2018-07-30 | A kind of bottom ground heave amount monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208685582U true CN208685582U (en) | 2019-04-02 |
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ID=65883083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821216379.XU Active CN208685582U (en) | 2018-07-30 | 2018-07-30 | A kind of bottom ground heave amount monitoring device |
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| Country | Link |
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| CN (1) | CN208685582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718128A (en) * | 2022-04-06 | 2022-07-08 | 温州工程勘察院有限公司 | Deep basal pit deformation monitoring alarm device |
-
2018
- 2018-07-30 CN CN201821216379.XU patent/CN208685582U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718128A (en) * | 2022-04-06 | 2022-07-08 | 温州工程勘察院有限公司 | Deep basal pit deformation monitoring alarm device |
| CN114718128B (en) * | 2022-04-06 | 2024-02-13 | 温州工程勘察院有限公司 | Deep foundation pit deformation monitoring alarm device |
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