CN105424910B - Device for measuring layered settlement of soil mass - Google Patents
Device for measuring layered settlement of soil mass Download PDFInfo
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- CN105424910B CN105424910B CN201510919264.1A CN201510919264A CN105424910B CN 105424910 B CN105424910 B CN 105424910B CN 201510919264 A CN201510919264 A CN 201510919264A CN 105424910 B CN105424910 B CN 105424910B
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- settlement
- sedimentation
- soil body
- pipe
- measurement apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a device for measuring layered settlement of a soil mass. The device comprises a model box, a settlement measuring assembly and a pressurizing device. The model box is of a cubic structure with an opening in the top end. The settlement measuring assembly comprises a base, a positioning rod, settlement pipes and a displacement sensor. The settlement pipes are different in external diameter and height, two positioning slide ways are carved in the inner wall of the pipe diameter of each settlement pipe, and rolling balls are embedded into the positioning slide ways. The displacement sensor is connected with a sensor frame to be fixed to the positioning rod, pointers are in lap joint with L-shaped slices, and a wire is connected to a PC. The multiple settlement pipes are sequentially arranged on a body reference rod in a sleeving mode in an external-diameter-increasing order, wherein the heights of the settlement pipes are determined according to the measured depth of soil layers. The pressure of the soil layers is transmitted through a hydraulic pump, and layered settlement data of the soil layers are collected through the PC. By means of the settlement measuring device, single-hole-and-multi-point settlement measuring of the soil mass is achieved, layered settlement of the soil layers can be well measured, and the device is quite suitable for indoor model-box testing.
Description
Technical field
The present invention relates to geotechnical model test technical field, more particularly to a kind of soil body delaminating deposition measurement apparatus.
Background technology
In the coastal area of China, many engineering foundations are formed through consolidation process using weak soil, due to
Weak soil has that compressibility is high, void ratio is big, the low feature of permeability, and this will make building that differential settlement occurs, and cause wall
The stability that body ftractures to building brings very big destruction.In order to control the stability of soft soil foundation, ensure building
Safety, the sedimentation for testing foundation soil just seems very necessary.Due to the cycle length of field test, costly, influence factor it is many
Etc. reason, indoor model test has become the main research meanses in current scientific research field, and indoor model test is ground
The important component part of engineering test, general geotechnical model test requires measurement soil in addition to testing the sedimentation of soil body surface, also
The delaminating deposition of body.By the settling amount for testing different depth soil layer, the deformation characteristic of different depth soil layer is understood, and then to visit
Study carefully the construction method and its modification measures of the deformation of control foundation soil.The method of testing of common indoor soil body delaminating deposition is in soil
Sedimentation plate is placed in layer, sedimentation plate is connected and stretches out model casing with sedimentation bar, when pressurizeing to the soil body, by measuring instrument
The falling head of observation sedimentation bar further draws the settling amount of soil layer.Its problem for existing is to require that differences multiple to soil layer are deep
When the measuring point of degree is measured, need to insert multiple sedimentation pipes, because the soil body surface in model casing accumulates limited, it is difficult to avoid bar
The soil compaction effect formed between bar, affects the accuracy and reliability of measured value.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of soil body delaminating deposition measurement apparatus, the survey
Amount device is capable of achieving the settlement measurement that single hole multiple spot is carried out to the soil body in model casing.
To reach above-mentioned purpose, the technical solution used in the present invention is：
A kind of soil body delaminating deposition measurement apparatus, including model casing (1), settlement measurement component (2) and pressue device (3),
The model casing (1) for top end opening cube structure, the settlement measurement component (2) by locating rod (4), fixation it is described fixed
The base (5) of position bar (4), the sedimentation sleeve pipe (6) being enclosed within the locating rod (4) and displacement transducer (7) composition, the sedimentation
Sleeve pipe (6) includes 2～5 sedimentation pipes (8), and each sedimentation pipe (8) is enclosed within the locating rod (4), adjacent sedimentation pipe (8) it
Between be provided with locator slide (9), ball is set in the locator slide (9), sedimentation pipe (8) top is connected with L-type thin slice
(10), one end of institute's displacement sensors (7) pointer is overlapped on the L-type thin slice (10), institute's displacement sensors (7) pointer
The other end be connected on PC by wire, the settlement measurement component (2) is arranged in the model casing (1), it is described plus
Pressure device (3) is including hydraulic pump (11), pressure actuation bar (12) and is connected to the pressure-bearing of pressure actuation bar (12) end
Opening is arranged at plate (13), bearing plate (13) top, is covered in the case mouth of the model casing (1).
Preferably, the bottom extension of the sedimentation pipe (8) is provided with vane (14), and vane (14) are shaped as
It is circular.
Preferably, the base (5) of the settlement measurement component (2) is shaped as square, and size is the model casing (1)
1/5～2/5.
Preferably, institute's displacement sensors (7) are consistent with the quantity of the sedimentation pipe (8).
Preferably, the consistent size of the bearing plate (13) and the model casing (1) case mouth.
Measurement apparatus operation principle of the present invention is as follows:
A kind of soil body delaminating deposition measurement apparatus, its settlement measurement component is placed in model casing, the diameter of sedimentation pipe, height
It is different, it is sequentially sleeved in locating rod, displacement transducer is fixed on positioning mark pole by sensor frame, sensor pointer
One end is overlapped on the L-type thin slice being connected with sedimentation pipe, and the other end of sensor pointer is connected on PC by wire, is passed through
Hydraulic pump transmits pressure to bearing plate, and to soil layer uniform pressurization is carried out, and now, the vane being connected with sedimentation pipe can be because by pressure zone
Dynamic sedimentation pipe sinks, and the displacement transducer pointer being overlapped on sedimentation pipe also can be moved down therewith, and it declines numerical value and can pass through PC
Data acquisition and obtain, the as settling amount of soil layer.
Beneficial effects of the present invention have：
(1) the caliber inwall of the sedimentation pipe that settlement measuring device of the present invention is adopted is provided with two locator slides, and positioning is slided
Road is embedded with ball, is inserted in successively on main body mark post in multiple sedimentation pipes, and when pressurizeing to soil layer, the sedimentation pipe of various outer diameter can be with
And the pressurization of the soil body sunk, now, the ball that locator slide is embedded with can effectively reduce the friction between Guan Yuguan,
And can prevent sedimentation pipe from rotating each other.
(3) settlement measuring device of the invention can realize the settlement measurement to soil body single hole multiple spot, so as to avoid because
Measuring point is excessive, the sedimentation pipe for inserting the soil body is too close and cause the soil compaction effect between bar and bar.
Description of the drawings：
Fig. 1 is the front view of settlement measuring device of the present invention；
Fig. 2 is the front view of settlement measurement component of the present invention；
Fig. 3 is the profile of sedimentation pipe of the present invention；
Fig. 4 is the top view of sedimentation pipe of the present invention.
In figure, 1, model casing, 2, settlement measurement component, 3, pressue device, 4, locating rod, 5, base, 6, sedimentation sleeve pipe, 7,
Displacement transducer, 8, sedimentation pipe, 9, locator slide, 10, L-type thin slice, 11, hydraulic pump, 12, pressure actuation bar, 13, bearing plate,
14th, vane, 15, osculum.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Accompanying drawing and embodiment, the present invention is further illustrated.It should be appreciated that embodiment described herein is used only for explaining this
Invention, is not intended to limit the present invention.
As shown in Figures 1 to 4, a kind of soil body delaminating deposition measurement apparatus, including model casing (1), settlement measurement component (2)
With pressue device (3), it is characterised in that：The model casing (1) for top end opening cube structure, the settlement measurement component
(2) by locating rod (4), the base (5) of the fixation locating rod (4), the sedimentation sleeve pipe (6) being enclosed within the locating rod (4) and
Displacement transducer (7) is constituted, and sedimentation sleeve pipe (6) sets including 2～5 sedimentation pipes (8) between the adjacent sedimentation pipe (8)
It is equipped with locator slide (9), locator slide and some balls is set, sedimentation pipe (8) is that external diameter is not of uniform size, highly different
's.Its height be according to according to test before default subsidence survey point depth and determine, its quantity be foundation measuring point number and
Determine.The plurality of vane (14) is carved with screw thread, and its external diameter is unanimously, and sedimentation pipe (8) is with vane (14) by screw thread
It is attached, the number of the vane (14) is more than 2, and the plurality of its specification size of L-type thin slice (10) is identical, sedimentation
Pipe (8) is attached with L-type thin slice (10) by bolt.During embedded, according to the depth of measuring point each is sunk successively
Drop pipe (8) is enclosed within locating rod (4), and after the completion of burying, its height for stretching out the sedimentation pipe (8) outside model casing is with its external diameter
Increase and reduce.Its displacement sensors (7) are fixed on positioning mark pole (4) by sensor frame, the plurality of displacement
Sensor (7) pointer is overlapped on successively on each L-type thin slice (10), and the other end of the plurality of displacement transducer (7) pointer leads to
Cross wire to be connected on PC, by hydraulic pump (11) pressure is provided, be delivered in what is be attached thereto through pressure actuation bar (12)
On bearing plate (13), and then uniform pressurization is carried out to the soil body in case, when the soil body pressurizes in case, it is heavy that the sinking of the soil body can drive
Drop pipe (8) is moved down, and now, the pointer of displacement transducer (7) can decline therewith, and it declines numerical value can be by the data acquisition of PC
And obtain.
The present embodiment settlement measuring device, can effectively reduce insertion casing in sedimentation bar number, effectively avoid because
Measuring point is excessive, the sedimentation pipe for inserting the soil body is too close and cause the soil compaction effect between bar and bar, it is achieved thereby that to soil body single hole
The settlement measurement of multiple spot, and it is easy to operate, and its data is measured through high accuracy displacement sensor, and is adopted by PC
Collection, reading is accurately reliable, is highly suitable for the test of indoor model case.
The foregoing is only presently preferred embodiments of the present invention, not to limit the present invention, all spirit in the present invention and
Any modification, equal replacement and improvement for being made within principle etc., all should fall within the scope and spirit of the invention.
Claims (8)
1. a kind of soil body delaminating deposition measurement apparatus, including model casing (1), settlement measurement component (2) and pressue device (3), its
It is characterised by：The model casing (1) for top end opening cube structure, the settlement measurement component (2) by locating rod (4),
The base (5) of the fixation locating rod (4), the sedimentation sleeve pipe (6) being enclosed within the locating rod (4) and displacement transducer (7) group
Into sedimentation sleeve pipe (6) is including 2～5 sedimentation pipes (8), and each sedimentation pipe (8) is enclosed within the locating rod (4), adjacent
It is provided between sedimentation pipe (8) in locator slide (9), locator slide and ball is set, it is thin that sedimentation pipe (8) top is connected with L-type
Piece (10), one end of institute's displacement sensors (7) pointer is overlapped on L-type thin slice (10), institute's displacement sensors (7) pointer
The other end is connected on PC by wire；The settlement measurement component (2) is arranged in the model casing (1), the pressurization
Device (3) is including hydraulic pump (11), pressure actuation bar (12) and is connected to the bearing plate of pressure actuation bar (12) end
(13), opening is arranged at bearing plate (13) top, is covered on the case mouth of the model casing (1)；The bottom of the sedimentation pipe (8)
Extension is provided with vane (14).
2. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：The vane (14)
It is generally circular in shape.
3. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：The settlement measurement component
(2) base (5) is shaped as square, and the size of the base (5) of the settlement measurement component (2) is the model casing (1)
1/5～2/5.
4. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：Institute's displacement sensors
(7) it is consistent with the quantity of the sedimentation pipe (8).
5. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：The bearing plate (13) with
The consistent size of model casing (1) the case mouth.
6. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：The sedimentation pipe (8) with
The vane (14) is attached by screw thread.
7. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：The L-type thin slice (10)
Quantity be more than 2, the specification size of the L-type thin slice (10) is identical.
8. a kind of soil body delaminating deposition measurement apparatus according to claim 1, it is characterised in that：The sedimentation pipe (8) with
The L-type thin slice (10) is attached by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919264.1A CN105424910B (en) | 2015-12-11 | 2015-12-11 | Device for measuring layered settlement of soil mass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919264.1A CN105424910B (en) | 2015-12-11 | 2015-12-11 | Device for measuring layered settlement of soil mass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105424910A CN105424910A (en) | 2016-03-23 |
| CN105424910B true CN105424910B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510919264.1A Expired - Fee Related CN105424910B (en) | 2015-12-11 | 2015-12-11 | Device for measuring layered settlement of soil mass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106568697B (en) * | 2016-11-03 | 2019-06-14 | 山东大学 | A kind of infiltrative indoor model test device of test geomembrane and operating method |
| CN107490361A (en) * | 2017-07-28 | 2017-12-19 | 扬州大学 | A kind of oscillatory load soil under action body surface face settlement measuring device |
| CN107515180B (en) * | 2017-09-12 | 2023-11-14 | 广西大学 | Sedimentation test and analysis device |
| CN109238867B (en) * | 2018-11-02 | 2023-08-11 | 湖北省路桥集团有限公司 | In-situ field collapse coefficient measuring device and two-wire method collapse coefficient test method |
| CN109357661A (en) * | 2018-11-22 | 2019-02-19 | 天津城建大学 | A kind of preboring formula soil layer layering measuring instrument |
| CN109827845A (en) * | 2019-03-22 | 2019-05-31 | 天津城建大学 | Concrete drain tile liner HDPE plate anti-drawing strength test device |
| CN112066946B (en) * | 2020-09-24 | 2022-04-15 | 李元勋 | Single-hole layered settlement measuring device and method suitable for indoor model test |
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