CN105241417A - Monitoring method for settlement by utilizing gravity - Google Patents
Monitoring method for settlement by utilizing gravity Download PDFInfo
- Publication number
- CN105241417A CN105241417A CN201510603801.1A CN201510603801A CN105241417A CN 105241417 A CN105241417 A CN 105241417A CN 201510603801 A CN201510603801 A CN 201510603801A CN 105241417 A CN105241417 A CN 105241417A
- Authority
- CN
- China
- Prior art keywords
- water tank
- water
- change
- weight
- settlement
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention relates to a monitoring method for settlement by utilizing gravity, which belongs to the field of civil engineering and is applied in the structure safety and health monitoring industry. According to the method, a plurality of supporting platforms are fixed on a test point of a structure at first and are horizontally installed; water tanks are placed on the supporting platforms and mutually connected through water pipes; thin pipes, for connecting the water tanks, of the water pipes pass through clamps which are fixedly arranged on a wall body and are thin rubber hoses, so interaction force between the water tanks and the water pipes is eliminated. Settlement of a structure member leads to height changes of the liquid levels of the settling water tanks, and the height changes of the liquid levels may cause weight changes of the water tanks; i.e., tiny height changes may cause great weight changes, so the height value of the liquid levels can be accurately determined. The monitoring method provided by the invention improves test accuracy of settlement by testing the weight changes of the settling water tanks.
Description
Technical field
The present invention relates to a kind of Gravity observation sedimentation method, belong to field of civil engineering, be applied to structural safety health monitoring industry.
Background technology
Known settlement test method, determines the sedimentation of testee by the water level measuring sedimentation water tank.But the height of liquid level is difficult to Measurement accuracy. known method of testing has supercritical ultrasonics technology and laser ranging method.
By ultrasonic measurement liquid level height, but test error is large, reach 1CM. laser ranging method test liquid surface elevation, not only cost intensive, and liquid level is transparent or semitransparent material, is difficult to reflects laser. shine into reading difficulty.
Summary of the invention
In order to overcome above-mentioned defect, the object of the present invention is to provide a kind of Gravity observation sedimentation method, being changed by liquid level, cause larger weight change, improve the measuring accuracy of sedimenting system, make sedimentation measuring accuracy reach 0.1mm, liquid level testing cost can be reduced simultaneously.
To achieve these goals, the present invention adopts following technical scheme:
A kind of Gravity observation sedimentation method:
First multiple support platform is fixed in the test point of structure, support platform level is installed, water tank is placed in support platform, water tank is interconnected by water pipe, water pipe is connecting water tank place tubule by being fixed on the clip on body of wall, water tank junction tubule adopts thin band tubing, eliminates the interaction force of water tank and water pipe;
During test, first in water tank, pour into water, during sedimentation test, there is height change in each test point, causes water level in water tank also to occur change, just cause the weight change of water tank;
Because tubule does not produce acting force to water tank, the weight of water tank is all born by bracing frame; Water tank cross-sectional area is certain, can be obtained by the change of the weight of bracing frame test water tank; The length variations of the liquid of water tank, has just drawn their relative settlement.
Relative settlement measuring method gets any one water tank to make reference a little, and other water tanks carry out calculated settlement with reference point.
To weigh the inside of bracing frame: resistance strain gage is being under pressure or is drawing the period of the day from 3 p.m. to 5 p.m., and material will be out of shape, and the change of resistance can be caused like this to produce the differential power supply of about full scale; Differential wave gives A/D module, and A/D module passes to single-chip microcomputer after simulating signal is converted to digital signal, and single-chip microcomputer is by being presented in LED display by gravimetric value after debounce;
The formula of tank height change is:
H=?m/(S*P)
M is the weight of change
P is the density of water;
S is the cross-sectional area of water tank.
Beneficial effect of the present invention:
During component sedimentation, the liquid level of sedimentation water tank can be caused to change, liquid level changes, and will cause the weight change of water tank. and small height change, will cause the larger change of weight. so just can obtain the height value of liquid level comparatively accurately.By the weight change of test sedimentation water tank, improve the measuring accuracy of sedimentation.
Accompanying drawing explanation
Fig. 1 is the structural representation of settlement measurement system of the present invention;
Fig. 2 is the inner structure block diagram of bracing frame of weighing (1.2) of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing 1,2:
First multiple support platform 1.2, be fixed in the test point of structure, support platform 1.2 level is installed, water tank 1.1 is placed in support platform 1.2, water tank is interconnected by water pipe 1.4, water pipe is at connection water tank place tubule 1.5 by being fixed on the clip 1.3 on body of wall, and water tank junction tubule 1.5 adopts diameter to be the thin band tubing of 8mm, eliminates the interaction force of water tank 1.1 and water pipe 1.3.
During test, first in water tank 1.1, pour into water. make water level reach about 1/2 of water tank 1.1. record the weight of each water tank 1.1. when there is relative settlement in test point, there is height change in each test point, water level in water tank 1.1 is caused also to occur change, just cause the weight change of water tank 1.1. because tubule 1.5 is rubber tubule, acting force is not produced to water tank 1.1, the weight of water tank 1.1 is all born by bracing frame 1.2. and the change being tested the weight of water tank 1.1 by bracing frame 1.2 can be obtained. and the length variations of the liquid of water tank 1.1, has just drawn their relative settlement.
Relative settlement measuring method is got, and any one water tank 1.1 makes reference a little. other water tanks 1.1 carry out calculated settlement with reference point.
Weigh bracing frame 1.2 internal frame diagram as shown in Figure 2, resistance strain gage 2.1 is being under pressure or is drawing the period of the day from 3 p.m. to 5 p.m., material will be out of shape, the change of resistance can be caused like this, resistance strain gage 2.1 selects 1200 Europe resistance, resistance strain gage 2.1 is adopted to the driving voltage of 10V, producing the differential power supply of full scale of about 2mV/V. differential wave gives A/D module 2.2, after A/D module 2.2 selects 24 ADC chip HX711.A/D modules 2.2 that simulating signal is converted to digital signal, pass to single-chip microcomputer 2.3:MSP430, MSP430 is by being presented at gravimetric value in LED display 2.4 after debounce.
Because full scale is changed to 2mV/V, 10V is changed to 20mV, i.e. 0.02V, use 24 for ADCHX711 can reach 1/10000 resolution.
The formula of the change of water tank weight is:,
m=?V*P
M is the weight of change
V is the volume of level change, is the product of level change height and area
P is the density of water
Adopt diameter to be the right cylinder of 150mm with water tank 1.1, when water tank 1.1 position sink be highly 1mm time, the density of known water is 1.0 × 103 kg/m 3, and in substitution, formula obtains m and equals 70 grams.
Water tank 1.1 3kg tank height of conducting oneself with dignity is 200mm, to fill the heavy 25Kg. selected range of water tank be 30kg precision be 1/10000 precision electronic level ground, sensor. its error is 3 grams.
When the height change of water tank 1.11mm, weight change is 70 grams, both when water tank change 0.1mm time, has been changed to 7 grams, can measures the level change of 0.1mm.
Claims (2)
1. a Gravity observation sedimentation method, is characterized in that:
First multiple support platform (1.2) is fixed in the test point of structure, support platform (1.2) level is installed, water tank (1.1) is placed in support platform (1.2), water tank (1.1) is interconnected by water pipe (1.4), water pipe is connecting water tank place tubule (1.5) by being fixed on the clip (1.3) on body of wall, water tank junction tubule (1.5) adopts thin band tubing, eliminates the interaction force of water tank (1.1) and water pipe (1.4);
During test, first in water tank (1.1), pour into water, during sedimentation test, there is height change in each test point, causes water tank (1.1) interior water level also to occur change, just cause the weight change of water tank (1.1);
Because tubule (1.5) does not produce acting force to water tank (1.1), the weight of water tank (1.1) is all born by bracing frame (1.2); Water tank cross-sectional area is certain, can be obtained by the change of the weight of bracing frame (1.2) test water tank (1.1); The length variations of the liquid of water tank (1.1), has just drawn their relative settlement.
2. Gravity observation sedimentation method according to claim 1, is characterized in that:
The formula of tank height change is:
H=?m/(S*P)
M is the weight of change;
P is the density of water;
S is the cross-sectional area of water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510603801.1A CN105241417A (en) | 2015-09-22 | 2015-09-22 | Monitoring method for settlement by utilizing gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510603801.1A CN105241417A (en) | 2015-09-22 | 2015-09-22 | Monitoring method for settlement by utilizing gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105241417A true CN105241417A (en) | 2016-01-13 |
Family
ID=55039149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510603801.1A Pending CN105241417A (en) | 2015-09-22 | 2015-09-22 | Monitoring method for settlement by utilizing gravity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105241417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008116A (en) * | 2017-12-06 | 2018-05-08 | 河海大学 | Vacuum heaping pre-compression combines electric osmose experimental rig |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278206Y (en) * | 1996-02-27 | 1998-04-08 | 林燕彪 | Gravity type liquid level gauge |
| CN101041611A (en) * | 2006-03-22 | 2007-09-26 | 泰州青松致冷新材料有限公司 | Control method of liquid level in autoclave for fluothane hydrocarbon production |
| CN103063382A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | Deflection automatic measuring device and measuring method thereof |
| CN203024763U (en) * | 2012-06-14 | 2013-06-26 | 湖南高速铁路职业技术学院 | Construction beam posture monitoring system |
| CN104019795A (en) * | 2014-06-20 | 2014-09-03 | 盈亨科技(上海)有限公司 | Railway settlement monitoring system and online monitoring method |
-
2015
- 2015-09-22 CN CN201510603801.1A patent/CN105241417A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2278206Y (en) * | 1996-02-27 | 1998-04-08 | 林燕彪 | Gravity type liquid level gauge |
| CN101041611A (en) * | 2006-03-22 | 2007-09-26 | 泰州青松致冷新材料有限公司 | Control method of liquid level in autoclave for fluothane hydrocarbon production |
| CN203024763U (en) * | 2012-06-14 | 2013-06-26 | 湖南高速铁路职业技术学院 | Construction beam posture monitoring system |
| CN103063382A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | Deflection automatic measuring device and measuring method thereof |
| CN104019795A (en) * | 2014-06-20 | 2014-09-03 | 盈亨科技(上海)有限公司 | Railway settlement monitoring system and online monitoring method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008116A (en) * | 2017-12-06 | 2018-05-08 | 河海大学 | Vacuum heaping pre-compression combines electric osmose experimental rig |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105320596B (en) | A kind of bridge deflection test method and its system based on inclinator | |
| CN103364310B (en) | Strong gel strength measuring apparatus and measuring method | |
| CN202735169U (en) | Device for testing shrinkage of concrete filled steel tubular under effect of vertical load | |
| CN104180861A (en) | Standard device and measuring method using mass method for detecting high-pressure gas filling flow | |
| CN104296896B (en) | Analog simulation test direct-reading anchor ergometer method of work | |
| CN206248252U (en) | A kind of anchor pole axial direction dynamometer | |
| CN101526343B (en) | Correction method for weighing results of hydraulic pressure test deflection of air bottle | |
| CN102980637A (en) | Liquid level calibration detection device and method for liquid level sensor | |
| CN101762436A (en) | Liquid density measurement device and measurement method | |
| CN115265724A (en) | Liquid level meter field calibration device and method for obtaining calibration result | |
| CN205333150U (en) | A jar liquid level warning device is weighed in pitch storage | |
| CN103940969A (en) | System and method for measuring compressibility coefficient of organic liquid based on standard monocrystal silicon sphere | |
| CN201060149Y (en) | Liquid line flow resistance force testing apparatus | |
| CN204705570U (en) | The permeability experimental provision that a kind of automatic pressure detects | |
| CN105241417A (en) | Monitoring method for settlement by utilizing gravity | |
| CN202614634U (en) | Absorption tower slurry density measuring device | |
| CN106949942A (en) | The calibration method of its measurement oil tank outage of oil truck capacity calibrating installation and application | |
| CN208383337U (en) | A kind of arch bridge stiff skeleton external wrapping concrete temperature acquisition system | |
| CN201965818U (en) | Novel sound velocity tester | |
| CN201210051Y (en) | Fluid communicating gradienter in storage cylinder shape | |
| CN103808282A (en) | Anchorage structure displacement monitoring device and method | |
| CN107144296A (en) | A kind of hydrostatic level calibrating installation measured based on height gauge | |
| CN107144295A (en) | A kind of device of the portable hydrostatic level calibration measured based on height gauge | |
| CN204359424U (en) | Head tank Weighing module precision checking device | |
| CN106643634A (en) | Device for measuring water area-crossing bridge deflection and measurement method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |