CN110514530A - A kind of casting iron well lid bearing capacity change rate monitoring method - Google Patents
A kind of casting iron well lid bearing capacity change rate monitoring method Download PDFInfo
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- CN110514530A CN110514530A CN201910805547.1A CN201910805547A CN110514530A CN 110514530 A CN110514530 A CN 110514530A CN 201910805547 A CN201910805547 A CN 201910805547A CN 110514530 A CN110514530 A CN 110514530A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0212—Theories, calculations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a kind of casting iron well lid bearing capacity change rate monitoring methods, the stage is monitored including environmental parameter calibration phase and change rate, set the detection environment of different temperatures and different humidity, and the well lid bearing capacity change rate under respective environment is monitored, realize low temperature, room temperature and high temperature and drying, bearing capacity change rate monitoring under comfortable and wet condition, deepen the understanding to well lid service condition under varying environment, municipal personnel targetedly safeguard well lid according to different installation environments, extend the service life of well lid, according to the result of the weighted differences summation of the bearing capacity change rate threshold value under actual carrying capacity change rate and corresponding detection environment, determine whether the bearing capacity under the detection environment is in limiting condition, in actual use, this monitoring method is combined with warning system, it can be real The monitoring of existing well lid operating status, practicability is more preferably.
Description
Technical field
The present invention relates to casting iron well lid bearing capacity change rate monitoring technical field, specially a kind of casting iron well lid bearing capacity becomes
Rate monitoring method.
Background technique
Casting iron well lid has the characteristics that hardness is high, bearing capacity is good as equipment common in municipal works, but according to well
The physical property of the difference of lid installation environment, well lid is also varied, the well lid carrying under the conditions of different temperatures and different humidity
Power is also different, and the existing most maintenance of machine modes using basis of well lid maintenance mainly add antitheft and abrasion aspect
By force, the well lid maintenance mode and under different regions, different installation environments is identical, and municipal personnel use feelings to well lid under varying environment
Condition not enough understands, and can not targetedly be safeguarded according to different installation environments to well lid, reduce the service life of well lid.
Summary of the invention
The purpose of the present invention is to provide a kind of casting iron well lid bearing capacity change rate monitoring methods, by different test wrappers
The well lid bearing capacity change rate in border is monitored, and realizes low temperature, room temperature and high temperature and drying, holding comfortably and under wet condition
The monitoring of power change rate is carried, the understanding to well lid service condition under varying environment is deepened, allows municipal personnel according to different
Installation environment targetedly safeguards well lid, extends the service life of well lid, this monitoring method is mutually tied with warning system
It closes, can be realized the monitoring of well lid operating status, to solve municipal personnel mentioned above in the background art under varying environment
Well lid service condition not enough understands, and can not targetedly be safeguarded according to different installation environments to well lid, reduce well lid
The problem of service life.
To achieve the above object, the invention provides the following technical scheme: a kind of casting iron well lid bearing capacity change rate monitoring side
Method, monitoring method include environmental parameter calibration phase and change rate monitoring stage, and environmental parameter calibration phase includes:
Benchmark is set and monitors environment, test environment temperature setting is 25 degrees Celsius, adjusts and surveys under conditions of 25 degrees Celsius
Trying ambient humidity is 40%, gives well lid stable pressure, measures the well under multiple 25 degrees Celsius and 40% environmental damp condition
Lid bearing capacity forms the bearing capacity sequence under reference atmosphere, is calculated according to the bearing capacity sequence under reference atmosphere in reference atmosphere
Under average bearing capacity, using the average bearing capacity measured as benchmark bearing capacity；
Benchmark monitoring cycle is set, monitoring cycle is 2 minutes, give well lid stable pressure in the case where benchmark monitors environment,
The bearing capacity change rate of well lid each point in multiple monitoring cycles is measured, reference period bearing capacity change rate sequence is formed, according to base
Bearing capacity change rate sequence paracycle calculates the average bearing capacity change rate in reference period, and the average bearing capacity measured is become
Rate is as benchmark bearing capacity change rate；
The change rate monitoring stage includes the bearing capacity change rate monitoring stage under temperature environment and the carrying under humidity environment
Power change rate monitors the stage, and the bearing capacity change rate monitoring stage under temperature environment includes:
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 40% under conditions of 0 degree Celsius, is given
The stable pressure of well lid is given, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, shape are measured
At the bearing capacity change rate sequence under test environment, calculated under test environment according to the bearing capacity change rate sequence under test environment
Average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate A；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 40% under conditions of 50 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate B；
Under humidity environment bearing capacity change rate monitoring the stage include:
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 20% under conditions of 0 degree Celsius, is given
The stable pressure of well lid is given, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, shape are measured
At the bearing capacity change rate sequence under test environment, calculated under test environment according to the bearing capacity change rate sequence under test environment
Average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate C；
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 70% under conditions of 0 degree Celsius, is given
The stable pressure of well lid is given, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, shape are measured
At the bearing capacity change rate sequence under test environment, calculated under test environment according to the bearing capacity change rate sequence under test environment
Average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate D；
Setting test environment temperature is 25 degrees Celsius, and adjustment test ambient humidity is 20% under conditions of 25 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate E；
Setting test environment temperature is 25 degrees Celsius, and adjustment test ambient humidity is 70% under conditions of 25 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate F；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 20% under conditions of 50 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate G；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 70% under conditions of 50 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate H；
Will test environment bearing capacity change rate A, test environment bearing capacity change rate B, test environment bearing capacity change rate C,
Test environment bearing capacity change rate D, test environment bearing capacity change rate E, test environment bearing capacity change rate F, test environment are held
Carry power change rate G, test environment bearing capacity change rate H compared with benchmark bearing capacity change rate, is completed under varying environment respectively
Well lid bearing capacity change rate monitoring.
Further, according to the bearing capacity change rate sequence under each detection environment, using the bearing capacity of sequence critical point
Change rate is as the bearing capacity change rate threshold value under the detection environment.
Further, the actual carrying capacity change rate in continuous three reference periods is individually subtracted under corresponding detection environment
Bearing capacity change rate threshold value, obtain weighted differences summation, if obtain weighted differences summation result be more than or equal to
Zero, then determine that the bearing capacity under the detection environment is in limiting condition, if obtain weighted differences summation result less than zero,
Determine that the bearing capacity under the detection environment is in non-limit state.
Further, the loading test process of the well lid is detected suffered by multiple sampling points using infrared pressure sensor
Pressure forms sampling point pressure sequence, average sampling point pressure value is calculated according to sampling point pressure sequence, by average sampling point pressure value
Bearing capacity as well lid.
Compared with prior art, the beneficial effects of the present invention are:
1, a kind of casting iron well lid bearing capacity change rate monitoring method provided by the invention passes through the well to different test environment
Lid bearing capacity change rate is monitored, and realizes that the bearing capacity under low temperature, room temperature and high temperature and drying, comfortable and wet condition becomes
Rate monitoring, deepens the understanding to well lid service condition under varying environment, allows municipal personnel according to different mounting rings
Well lid is targetedly safeguarded in border, extends the service life of well lid.
2, a kind of casting iron well lid bearing capacity change rate monitoring method provided by the invention, according to actual carrying capacity change rate with
The weighted differences summation of bearing capacity change rate threshold value under corresponding detection environment as a result, determining the bearing capacity under the detection environment
Whether this monitoring method is combined in actual use in limiting condition with warning system, can be realized well lid fortune
The monitoring of row state, practicability is more preferably.
Detailed description of the invention
Fig. 1 is environmental parameter calibration phase schematic diagram of the invention；
Fig. 2 is that change rate of the invention monitors stage schematic diagram；
Fig. 3 is monitoring decision process schematic diagram of the invention.
In figure: 1, environmental parameter calibration phase；2, change rate monitors the stage；21, the bearing capacity change rate under temperature environment
The monitoring stage；22, the bearing capacity change rate under humidity environment monitors the stage.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of casting iron well lid bearing capacity change rate monitoring method, monitoring method includes environmental parameter calibration rank
Section 1 and change rate monitor the stage 2, and environmental parameter calibration phase 1 includes:
Benchmark is set and monitors environment, test environment temperature setting is 25 degrees Celsius, adjusts and surveys under conditions of 25 degrees Celsius
Trying ambient humidity is 40%, gives well lid stable pressure, measures the well under multiple 25 degrees Celsius and 40% environmental damp condition
Lid bearing capacity forms the bearing capacity sequence under reference atmosphere, is calculated according to the bearing capacity sequence under reference atmosphere in reference atmosphere
Under average bearing capacity, using the average bearing capacity measured as benchmark bearing capacity, the loading test process of well lid is using red
External pressure sensor detects multiple sampling point pressures, forms sampling point pressure sequence, is calculated according to sampling point pressure sequence flat
Equal sampling point pressure value, using average sampling point pressure value as the bearing capacity of well lid；
Benchmark monitoring cycle is set, monitoring cycle is 2 minutes, give well lid stable pressure in the case where benchmark monitors environment,
The bearing capacity change rate of well lid each point in multiple monitoring cycles is measured, reference period bearing capacity change rate sequence is formed, according to base
Bearing capacity change rate sequence paracycle calculates the average bearing capacity change rate in reference period, and the average bearing capacity measured is become
Rate is as benchmark bearing capacity change rate.
Referring to Fig. 2, the change rate monitoring stage 2 includes bearing capacity change rate monitoring stage 21 and humidity under temperature environment
Bearing capacity change rate under environment monitors the stage 22, and the bearing capacity change rate monitoring stage 21 under temperature environment includes:
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 40% under conditions of 0 degree Celsius, is given
The stable pressure of well lid is given, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, shape are measured
At the bearing capacity change rate sequence under test environment, calculated under test environment according to the bearing capacity change rate sequence under test environment
Average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate A；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 40% under conditions of 50 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate B；
Under humidity environment bearing capacity change rate monitoring the stage 22 include:
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 20% under conditions of 0 degree Celsius, is given
The stable pressure of well lid is given, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, shape are measured
At the bearing capacity change rate sequence under test environment, calculated under test environment according to the bearing capacity change rate sequence under test environment
Average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate C；
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 70% under conditions of 0 degree Celsius, is given
The stable pressure of well lid is given, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, shape are measured
At the bearing capacity change rate sequence under test environment, calculated under test environment according to the bearing capacity change rate sequence under test environment
Average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate D；
Setting test environment temperature is 25 degrees Celsius, and adjustment test ambient humidity is 20% under conditions of 25 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate E；
Setting test environment temperature is 25 degrees Celsius, and adjustment test ambient humidity is 70% under conditions of 25 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate F；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 20% under conditions of 50 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate G；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 70% under conditions of 50 degrees Celsius,
It gives well lid stable pressure, measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period,
The bearing capacity change rate sequence under test environment is formed, test environment is calculated according to the bearing capacity change rate sequence under test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate H；
Will test environment bearing capacity change rate A, test environment bearing capacity change rate B, test environment bearing capacity change rate C,
Test environment bearing capacity change rate D, test environment bearing capacity change rate E, test environment bearing capacity change rate F, test environment are held
Carry power change rate G, test environment bearing capacity change rate H compared with benchmark bearing capacity change rate, is completed under varying environment respectively
Well lid bearing capacity change rate monitoring.
Referring to Fig. 3, according to the bearing capacity change rate sequence under each detection environment, using the bearing capacity of sequence critical point
Change rate changes the actual carrying capacity in continuous three reference periods as the bearing capacity change rate threshold value under the detection environment
The bearing capacity change rate threshold value under corresponding detection environment is individually subtracted in rate, obtained weighted differences summation, if obtained difference adds
The result of power summation is more than or equal to zero, then determines that the bearing capacity under the detection environment is in limiting condition, if obtained difference
It is worth the result of weighted sum less than zero, then determines that the bearing capacity under the detection environment is in non-limit state.
In summary: a kind of casting iron well lid bearing capacity change rate monitoring method provided by the invention, setting different temperatures and
The detection environment of different humidity, and the well lid bearing capacity change rate under respective environment is monitored, realize low temperature, room temperature and height
Temperature and bearing capacity change rate monitoring dry, under comfortable and wet condition, deepen to well lid service condition under varying environment
Understand, municipal personnel targetedly safeguard well lid according to different installation environments, extend the use of well lid
Service life, according to the knot of the weighted differences summation of the bearing capacity change rate threshold value under actual carrying capacity change rate and corresponding detection environment
Fruit, determines whether the bearing capacity under the detection environment is in limiting condition, if obtain weighted differences summation result be greater than or
Person is equal to zero, then determines that the bearing capacity under the detection environment is in limiting condition, if the result of obtained weighted differences summation is small
In zero, then determine that the bearing capacity under the detection environment is in non-limit state, in actual use, by this monitoring method with
Warning system combines, and can be realized the monitoring of well lid operating status, practicability is more preferably.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of casting iron well lid bearing capacity change rate monitoring method, it is characterised in that: the monitoring method includes environmental parameter mark
Determine the stage (1) and change rate monitoring stage (2), the environmental parameter calibration phase (1) includes:
Benchmark is set and monitors environment, the test environment temperature setting is 25 degrees Celsius, adjusts and surveys under conditions of 25 degrees Celsius
Trying ambient humidity is 40%, gives well lid stable pressure, measures the well under multiple 25 degrees Celsius and 40% environmental damp condition
Lid bearing capacity forms the bearing capacity sequence under reference atmosphere, is calculated according to the bearing capacity sequence under the reference atmosphere in institute
The average bearing capacity under reference atmosphere is stated, using the average bearing capacity measured as benchmark bearing capacity；
Benchmark monitoring cycle is set, the monitoring cycle is 2 minutes, give well lid stable pressure in the case where benchmark monitors environment,
The bearing capacity change rate of well lid each point in multiple monitoring cycles is measured, reference period bearing capacity change rate sequence is formed, according to institute
The reference period bearing capacity change rate sequence stated calculates the average bearing capacity change rate in reference period, and being averaged of measuring is held
Power change rate is carried as benchmark bearing capacity change rate；
Change rate monitoring stage (2) includes under bearing capacity change rate monitoring stage (21) and humidity environment under temperature environment
Bearing capacity change rate monitor stage (22), bearing capacity change rate monitoring stage (21) under the temperature environment includes:
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 40% under conditions of 0 degree Celsius, gives well
Stable pressure is covered, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period is measured, is formed and surveyed
Bearing capacity change rate sequence under test ring border calculates test environment according to the bearing capacity change rate sequence under the test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate A；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 40% under conditions of 50 degrees Celsius, is given
The stable pressure of well lid measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, is formed
The bearing capacity change rate sequence under environment is tested, test wrapper is calculated according to the bearing capacity change rate sequence under the test environment
Average bearing capacity change rate under border, using the average bearing capacity change rate measured as test environment bearing capacity change rate B；
Bearing capacity change rate under the humidity environment monitors stage (22)
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 20% under conditions of 0 degree Celsius, gives well
Stable pressure is covered, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period is measured, is formed and surveyed
Bearing capacity change rate sequence under test ring border calculates test environment according to the bearing capacity change rate sequence under the test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate C；
Setting test environment temperature is 0 degree Celsius, and adjustment test ambient humidity is 70% under conditions of 0 degree Celsius, gives well
Stable pressure is covered, the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period is measured, is formed and surveyed
Bearing capacity change rate sequence under test ring border calculates test environment according to the bearing capacity change rate sequence under the test environment
Under average bearing capacity change rate, using the average bearing capacity change rate measured as test environment bearing capacity change rate D；
Setting test environment temperature is 25 degrees Celsius, and adjustment test ambient humidity is 20% under conditions of 25 degrees Celsius, is given
The stable pressure of well lid measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, is formed
The bearing capacity change rate sequence under environment is tested, test wrapper is calculated according to the bearing capacity change rate sequence under the test environment
Average bearing capacity change rate under border, using the average bearing capacity change rate measured as test environment bearing capacity change rate E；
Setting test environment temperature is 25 degrees Celsius, and adjustment test ambient humidity is 70% under conditions of 25 degrees Celsius, is given
The stable pressure of well lid measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, is formed
The bearing capacity change rate sequence under environment is tested, test wrapper is calculated according to the bearing capacity change rate sequence under the test environment
Average bearing capacity change rate under border, using the average bearing capacity change rate measured as test environment bearing capacity change rate F；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 20% under conditions of 50 degrees Celsius, is given
The stable pressure of well lid measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, is formed
The bearing capacity change rate sequence under environment is tested, test wrapper is calculated according to the bearing capacity change rate sequence under the test environment
Average bearing capacity change rate under border, using the average bearing capacity change rate measured as test environment bearing capacity change rate G；
Setting test environment temperature is 50 degrees Celsius, and adjustment test ambient humidity is 70% under conditions of 50 degrees Celsius, is given
The stable pressure of well lid measures the bearing capacity change rate of the well lid each point under multiple test environment conditions in reference period, is formed
The bearing capacity change rate sequence under environment is tested, test wrapper is calculated according to the bearing capacity change rate sequence under the test environment
Average bearing capacity change rate under border, using the average bearing capacity change rate measured as test environment bearing capacity change rate H；
It will test environment bearing capacity change rate A, test environment bearing capacity change rate B, test environment bearing capacity change rate C, test
Environmental carrying capacity change rate D, test environment bearing capacity change rate E, test environment bearing capacity change rate F, test environmental carrying capacity
Change rate G, test environment bearing capacity change rate H compared with benchmark bearing capacity change rate, complete the well under varying environment respectively
The monitoring of lid bearing capacity change rate.
2. a kind of casting iron well lid bearing capacity change rate monitoring method as described in claim 1, it is characterised in that: according to each inspection
The bearing capacity change rate sequence under environment is surveyed, using the bearing capacity change rate of sequence critical point as the carrying under the detection environment
Power change rate threshold value.
3. a kind of casting iron well lid bearing capacity change rate monitoring method as described in claim 1, it is characterised in that: by continuous three
The bearing capacity change rate threshold value under corresponding detection environment, obtained difference is individually subtracted in actual carrying capacity change rate in reference period
It is worth weighted sum, if the result of obtained weighted differences summation is more than or equal to zero, determines the carrying under the detection environment
Power is in limiting condition, if the result of obtained weighted differences summation determines at the bearing capacity under the detection environment less than zero
In non-limit state.
4. a kind of casting iron well lid bearing capacity change rate monitoring method as described in claim 1, it is characterised in that: the well lid
Loading test process is to detect multiple sampling point pressures using infrared pressure sensor, forms sampling point pressure sequence, according to
Average sampling point pressure value is calculated in the sampling point pressure sequence, using average sampling point pressure value as the bearing capacity of well lid.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112181033A (en) * | 2020-10-28 | 2021-01-05 | 苏州知瑞光电材料科技有限公司 | Adjusting method and device for cast iron environment control equipment |
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| 中华人民共和国国家质量监督检验检疫总局 等: "《中华人民共和国国家标准 GB/T 23858-2009 检查井盖》", 27 May 2009 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112181033A (en) * | 2020-10-28 | 2021-01-05 | 苏州知瑞光电材料科技有限公司 | Adjusting method and device for cast iron environment control equipment |
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