CN107503336A - A kind of rich water soft clay area underground structure service phase deformation evaluating method - Google Patents
A kind of rich water soft clay area underground structure service phase deformation evaluating method Download PDFInfo
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Abstract
The invention discloses a kind of rich water soft clay area underground structure service phase deformation evaluating method, comprise the following steps：The assessment item that determines rich water soft clay area underground structure service phase environmental activity, the grade assessment standard for establishing environmental activity, the assessment item for determining the underground structure service phase deformation of rich water soft clay area, establish the grade assessment standard that underground structure service phase deforms under varying environment function grade.The present invention proposes the detailed evaluation method being combined with environmental activity grade, for the deformation of underground structure service phase of complete set, safety for underground structure is on active service and the maintenance of underground structure deformation provides foundation, solves the problems, such as that existing evaluation method lacks regional specific aim, can not make differentiation evaluation to the deformation of underground structure service phase according to different environmental activities.
Description
Technical field
The invention belongs to construction of underground structure field, and in particular to a kind of rich water soft clay area underground structure service phase becomes
Shape evaluation method.
Background technology
With the continuous quickening of Urbanization in China, urban ground resource is further short, and underground structure has efficiently
The advantage of reasonable utilization space, it has also become the new focus of urban construction.In the rich water soft clay area such as Tianjin, underground structure is in
Under a variety of environment collective effects, contained villaumite, sulfate etc. are to concrete structure especially in soft soil layer and underground water
Corrosion function, the deterioration of concrete can be accelerated, reduce the service life of structure.
In rich water soft clay area, soil property has the characteristics of high-moisture, high void ratio, low-intensity, compressibility, and these are special
Point determines that underground structure is highly prone to soft soil consolidation sedimentation, the influence of earth's surface construction activity, so as to produce longitudinal direction and horizontal stroke
To deformation.Excessive vertical and horizontal, which deform, can cause structure seam opening or structural plane tensile failure, serious threat
The military service safety of lower structure.
, can not be under the various environmental activities in rich water soft clay area due to there is no unified evaluation criterion in current industry
Comprehensive evaluation is made in underground structure deformation, it is therefore necessary to for rich water soft clay area feature, proposes that a set of and environment is made
Evaluation method being combined with grade, for underground structure deformation, rationally assess the underground structure under varying environment effect
Deformation state, standard foundation is provided for underground structure safety military service.
The content of the invention
The present invention proposes that the purpose is to providing a kind of rich water soft clay area to solve the problems, such as that prior art is present
Lower structure service phase deformation evaluating method.
The technical scheme is that：A kind of rich water soft clay area underground structure service phase deformation evaluating method, including with
Lower step：
I determines the assessment item of rich water soft clay area underground structure service phase environmental activity
Air residing for underground structure, water quality, soil property environmental condition are reconnoitred, determined residing for concrete structure
Environmental activity assessment item, the environmental activity assessment item include：General environment, bar in chlorine salt solution, chemical erosion environment；
II establishes the grade assessment standard of environmental activity
The safe coefficient of environmental activity assessment item is evaluated, and according to from being normally divided into A~E five to danger
Individual function grade, wherein highest environmental activity grade should be taken when there are a variety of environment collective effects；
III determines the assessment item of rich water soft clay area underground structure service phase deformation
Underground structure station and tunnel are monitored, determine the assessment item of underground structure labour phase deformation, the evaluation
Project includes：Station vertical displacement, tunnel vertical displacement, station horizontal displacement, tunnel horizontal displacement, tunnel relative settlement, tunnel
Restrain in road；
IV establishes the grade assessment standard that underground structure service phase deforms under varying environment function grade
To under varying environment function grade in step III underground structure deform safe coefficient evaluate, and according to from
Safety is divided into tetra- grades of I~IV to danger,
When deformation values reach I levels, underground structure still remains intact state, can not process；When deformation values reach II levels
When, early warning should be sent and strengthen monitoring；After related technical measures are taken, fail the development of effectively control deformation, deformation values
When reaching III level, it is necessary to the development for the control deformation that takes further measures immediately, until stabilization；When deformation values are more than IV
After level, underground structure operation should be stopped immediately, take rational maintenance counter-measure.
General environment is classified as follows in step I：A levels are indoor annual relative humidity ＜ 60%, or for a long time in water
In lower or soil；B levels are indoor annual relative humidity >=60%, or outdoor environment；C levels are in fluctuation of water table area, or are in
Alternation of wetting and drying area.
Bar in chlorine salt solution is classified as follows in step I：C levels are the mg/L of chlorine ion concentration >=100 and≤500mg/L in water,
And have alternation of wetting and drying, or chlorine ion concentration >=150mg/kg and≤750mg/kg in soil；D levels are chlorine ion concentration ＞ in water
500mg/L and≤5000mg/L, and have alternation of wetting and drying, or chlorion depth ＞ 750mg/kg and≤7500mg/kg in soil, and
There is alternation of wetting and drying；E levels are chlorine ion concentration ＞ 5000mg/L in water, and have alternation of wetting and drying, or chlorion depth ＞ in soil
7500mg/kg, and have alternation of wetting and drying.
Chemical erosion environment is classified as follows in step I：B levels are in waterConcentration >=200mg/L and≤
1000mg/L；C levels are in waterIn concentration ＞ 1000mg/L and≤4000mg/L, or soilConcentration ＞ 1500mg/kg
And aggressivity CO in≤6000mg/kg, or acidity-basicity ph value >=5.5 of water and≤6.5, or water2Concentration >=15mg/L and≤
Mg in 40mg/L, or water2+Concentration >=300mg/L and≤1000mg/L；D levels are in waterConcentration ＞ 4000mg/L and≤
In 10000mg/L, or soilThe mg/kg of concentration ＞ 6000 and≤15000mg/kg, or acidity-basicity ph value >=4.5 of water and ＜
Aggressivity CO in 5.5, or water2Mg in concentration ＞ 40mg/L and≤100mg/L, or water2+The mg/L of concentration ＞ 1000 and≤
3000mg/L；E levels are in waterConcentration ＞ 10000mg/L and≤20000 mg/L, or in soilConcentration ＞ 15000mg/
Kg, or acidity-basicity ph value >=4.0 of water and ＜ 4.5, or aggressivity CO in water2Concentration ＞ 100mg/L, or Mg in water2+Concentration ＞
3000 mg/L。
Station vertical displacement, tunnel vertical displacement are classified as follows in step IV：I levels are when environmental rating is A levels, B
When level, C levels, D levels, E levels, vertical displacement ＜ 3mm；II levels are the vertical displacement >=3mm when environmental rating is A levels, B levels, C levels
And ＜ 5mm；III level is vertical displacement >=5mm and the mm of ＜ 10, when environmental rating is when environmental rating is A levels, B levels, C levels
When D levels, E levels, vertical displacement >=3mm and ＜ 5mm；IV levels be when environmental rating is A levels, B levels, C levels, vertical displacement >=
10mm, when environmental rating is D levels, E levels, vertical displacement >=5mm.
Station horizontal displacement is classified as follows in step IV：I levels are when environmental rating is A levels, B levels, C levels, D levels, E
During level, horizontal displacement ＜ 3mm；II levels are the horizontal displacement >=3mm and ＜ 5mm when environmental rating is A levels, B levels, C levels；III
Level is the horizontal displacement >=5mm and ＜ 10mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E levels,
Horizontal displacement >=3mm and ＜ 5mm；IV levels are the horizontal displacement >=10mm, when environment etc. when environmental rating is A levels, B levels, C levels
When level is D levels, E levels, horizontal displacement >=5mm.
Tunnel horizontal displacement is classified as follows in step IV：I levels are when environmental rating is A levels, B levels, C levels, D levels, E
During level, horizontal displacement ＜ 3mm；II levels are the horizontal displacement >=3mm and ＜ 4mm when environmental rating is A levels, B levels, C levels；III
Level is the horizontal displacement >=4mm and ＜ 6mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E levels, water
Prosposition shifting >=3mm and ＜ 4mm；IV levels are when environmental rating is A levels, B levels, C levels, horizontal displacement >=6mm, work as environmental rating
For D levels, E levels when, horizontal displacement >=4mm.
Tunnel relative settlement is classified as follows in step IV：I levels are when environmental rating is A levels, B levels, C levels, D levels, E
During level, relative settlement ＜ 0.4 ‰ × LS × 50%；II levels be when environmental rating is A levels, B levels, C levels, relative settlement >=
0.4 ‰ × LS × 50% and ＜ 0.4 ‰ × LS × 80%；III level is that difference is sunk when environmental rating is A levels, B levels, C levels
>=0.4 ‰ × LS × 80% and 0.4 ‰ × LS of ＜ drop, when environmental rating is D levels, E levels, relative settlement >=0.4 ‰ × LS ×
50% and ＜, 0.4 ‰ × LS × 80%；IV levels are the relative settlement >=0.4 ‰ × LS when environmental rating is A levels, B levels, C levels,
When environmental rating is D levels, E levels, relative settlement >=0.4 ‰ × LS × 80%.Wherein, LS is along two monitoring points of tunnel axial direction
Spacing.
Tunnel convergence is classified as follows in step IV：I levels be when environmental rating is A levels, B levels, C levels, D levels, E levels,
Tunnel convergence value ＜ 2mm；II levels are the tunnel convergence value >=2mm and ＜ 4mm when environmental rating is A levels, B levels, C levels；III level
For when environmental rating is A levels, B levels, C levels, tunnel convergence value >=4mm and ＜ 5mm, when environmental rating is D levels, E levels, tunnel
Road convergency value >=2mm and ＜ 4mm；IV levels are when environmental rating is A levels, B levels, C levels, tunnel convergence value >=5mm, work as environment
When grade is D levels, E levels, tunnel convergence value >=4mm.
The present invention propose complete set it is detailed it is being combined with environmental activity grade, become for underground structure service phase
The evaluation method of shape, the ambient conditions of rich water soft clay area is investigated by reality first, determines the assessment item of environmental activity,
The grade assessment standard of environmental activity is established, quantitatively evaluating is carried out to environmental rating.Then according to actual survey achievement, it is determined that
The assessment item of rich water soft clay area underground structure service phase deformation, work out underground structure under varying environment function grade and deform
Grade assessment standard, the safe coefficient to malformation of efficiently and accurately reasonably evaluated, and is the safety of underground structure
It is on active service and the maintenance of underground structure deformation provides foundation.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention.
Embodiment
Hereinafter, referring to the drawings and embodiment the present invention is described in detail：
As shown in figure 1, a kind of rich water soft clay area underground structure service phase deformation evaluating method, comprises the following steps：
I determines the assessment item S1 of rich water soft clay area underground structure service phase environmental activity
Air residing for underground structure, water quality, soil property environmental condition are reconnoitred, determined residing for concrete structure
Environmental activity assessment item, the environmental activity assessment item include：General environment, bar in chlorine salt solution, chemical erosion environment.
II establishes the grade assessment standard S2 of environmental activity
The safe coefficient of environmental activity assessment item is evaluated, and according to from being normally divided into A~E five to danger
Individual function grade, wherein highest environmental activity grade should be taken when there are a variety of environment collective effects.
III determines the assessment item S3 of rich water soft clay area underground structure service phase deformation
Underground structure station and tunnel are monitored, determine the assessment item of underground structure labour phase deformation, the evaluation
Project includes：Station vertical displacement, tunnel vertical displacement, station horizontal displacement, tunnel horizontal displacement, tunnel relative settlement, tunnel
Restrain in road.
IV establishes the grade assessment standard S4 that underground structure service phase deforms under varying environment function grade
To under varying environment function grade in step III underground structure deform safe coefficient evaluate, and according to from
Safety is divided into tetra- grades of I~IV to danger.
When deformation values reach I levels, underground structure still remains intact state, can not process；When deformation values reach II levels
When, early warning should be sent and strengthen monitoring；After related technical measures are taken, fail the development of effectively control deformation, deformation values
When reaching III level, it is necessary to the development for the control deformation that takes further measures immediately, until stabilization；When deformation values are more than IV
After level, underground structure operation should be stopped immediately, take rational maintenance counter-measure.
General environment is classified as follows in step I：A levels are indoor annual relative humidity ＜ 60%, or for a long time in water
In lower or soil；B levels are indoor annual relative humidity >=60%, or outdoor environment；C levels are in fluctuation of water table area, or are in
Alternation of wetting and drying area (as shown in table 1).
The opinion rating and gradational boundary of the general environment of table 1
Wherein, the side of thin type structure is dry and opposite side moistening or satisfy water when, it dries the general ring of side concrete
Border function grade is considered by C levels.
Bar in chlorine salt solution is classified as follows in step I：C levels are the mg/L of chlorine ion concentration >=100 and≤500mg/L in water,
And have alternation of wetting and drying, or chlorine ion concentration >=150mg/kg and≤750mg/kg in soil；D levels are chlorine ion concentration ＞ in water
500mg/L and≤5000mg/L, and have alternation of wetting and drying, or chlorion depth ＞ 750mg/kg and≤7500mg/kg in soil, and
There is alternation of wetting and drying；E levels are chlorine ion concentration ＞ 5000mg/L in water, and have alternation of wetting and drying, or chlorion depth ＞ in soil
7500mg/kg, and have alternation of wetting and drying (as shown in table 2).
The opinion rating and gradational boundary of the bar in chlorine salt solution of table 2
Chemical erosion environment is classified as follows in step I：B levels are in waterConcentration >=200mg/L and≤
1000mg/L；C levels are in waterIn concentration ＞ 1000mg/L and≤4000mg/L, or soilConcentration ＞ 1500mg/kg
And aggressivity CO in≤6000mg/kg, or acidity-basicity ph value >=5.5 of water and≤6.5, or water2Concentration >=15mg/L and≤
Mg in 40mg/L, or water2+Concentration >=300mg/L and≤1000mg/L；D levels are in waterConcentration ＞ 4000mg/L and≤
In 10000mg/L, or soilThe mg/kg of concentration ＞ 6000 and≤15000mg/kg, or acidity-basicity ph value >=4.5 of water and ＜
Aggressivity CO in 5.5, or water2Mg in concentration ＞ 40mg/L and≤100mg/L, or water2+The mg/L of concentration ＞ 1000 and≤
3000mg/L；E levels are in waterConcentration ＞ 10000mg/L and≤20000 mg/L, or in soilConcentration ＞ 15000mg/
Kg, or acidity-basicity ph value >=4.0 of water and ＜ 4.5, or aggressivity CO in water2Concentration ＞ 100mg/L, or Mg in water2+Concentration ＞
3000 mg/L (as shown in table 3).
The opinion rating and gradational boundary of the chemical erosion environment of table 3
Wherein, when concrete structure is in high sulfate content (in waterIn the mg/L of concentration ＞ 20000, soil) environment when, its environmental activity should be specialized in and certification.
Station vertical displacement, tunnel vertical displacement are classified as follows in step IV：I levels are when environmental rating is A levels, B
When level, C levels, D levels, E levels, vertical displacement ＜ 3mm；II levels are the vertical displacement >=3mm when environmental rating is A levels, B levels, C levels
And ＜ 5mm；III level is vertical displacement >=5mm and the mm of ＜ 10, when environmental rating is when environmental rating is A levels, B levels, C levels
When D levels, E levels, vertical displacement >=3mm and ＜ 5mm；IV levels be when environmental rating is A levels, B levels, C levels, vertical displacement >=
10mm, when environmental rating is D levels, E levels, vertical displacement >=5mm (as shown in table 4).
The station of table 4 and the opinion rating and gradational boundary of tunnel structure vertical displacement
Station horizontal displacement is classified as follows in step iv：I levels are when environmental rating is A levels, B levels, C levels, D levels, E
During level, horizontal displacement ＜ 3mm；II levels are the horizontal displacement >=3mm and ＜ 5mm when environmental rating is A levels, B levels, C levels；III
Level is the horizontal displacement >=5mm and ＜ 10mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E levels,
Horizontal displacement >=3mm and ＜ 5mm；IV levels are the horizontal displacement >=10mm, when environment etc. when environmental rating is A levels, B levels, C levels
When level is D levels, E levels, horizontal displacement >=5mm (as shown in table 5).
The opinion rating and gradational boundary of the station structure horizontal displacement of table 5
Tunnel horizontal displacement is classified as follows in step iv：I levels are when environmental rating is A levels, B levels, C levels, D levels, E
During level, horizontal displacement ＜ 3mm；II levels are the horizontal displacement >=3mm and ＜ 4mm when environmental rating is A levels, B levels, C levels；III
Level is the horizontal displacement >=4mm and ＜ 6mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E levels, water
Prosposition shifting >=3mm and ＜ 4mm；IV levels are when environmental rating is A levels, B levels, C levels, horizontal displacement >=6mm, work as environmental rating
For D levels, E levels when, horizontal displacement >=4mm (as shown in table 6).
The opinion rating and gradational boundary of the tunnel structure horizontal displacement of table 6
Tunnel relative settlement is classified as follows in step iv：I levels are when environmental rating is A levels, B levels, C levels, D levels, E
During level, relative settlement ＜ 0.4 ‰ × LS × 50%；II levels be when environmental rating is A levels, B levels, C levels, relative settlement >=
0.4 ‰ × LS × 50% and ＜ 0.4 ‰ × LS × 80%；III level is that difference is sunk when environmental rating is A levels, B levels, C levels
>=0.4 ‰ × LS × 80% and 0.4 ‰ × LS of ＜ drop, when environmental rating is D levels, E levels, relative settlement >=0.4 ‰ × LS ×
50% and ＜, 0.4 ‰ × LS × 80%；IV levels are the relative settlement >=0.4 ‰ × LS when environmental rating is A levels, B levels, C levels,
When environmental rating is D levels, E levels, relative settlement >=0.4 ‰ × LS × 80%.Wherein, LS is along two monitoring points of tunnel axial direction
Spacing (as shown in table 7).
The opinion rating and gradational boundary of the tunnel longitudinal difference sedimentation of table 7
Tunnel convergence is classified as follows in step IV：I levels be when environmental rating is A levels, B levels, C levels, D levels, E levels,
Tunnel convergence value ＜ 2mm；II levels are the tunnel convergence value >=2mm and ＜ 4mm when environmental rating is A levels, B levels, C levels；III level
For when environmental rating is A levels, B levels, C levels, tunnel convergence value >=4mm and ＜ 5mm, when environmental rating is D levels, E levels, tunnel
Road convergency value >=2mm and ＜ 4mm；IV levels are when environmental rating is A levels, B levels, C levels, tunnel convergence value >=5mm, work as environment
When grade is D levels, E levels, tunnel convergence value >=4mm (as shown in table 8).
The opinion rating and gradational boundary of the tunnel convergence of table 8
Embodiment 1
The transit tunnel of 1000 meters of length of metro station and its uplink to certain rich water soft clay area carries out structure change
Shape is assessed, and uplink section is K1+500~K2+500.
The environmental conditions such as the air residing for the underground structure, water quality, soil property are reconnoitred, determine concrete structure
Residing environmental activity classification and function grade.Prospecting is found, in this area's waterConcentration is 2400mg/L, in soil
Concentration is 3000mg/kg, and the acid-base value (pH value) of water is 6.0, and underground structure local environment is calm and moister.Through step
I, II judge that the environment belongs to chemical erosion environment, and function grade is C levels.
The underground structure is divided into station and tunnel two parts, and wherein station setting 10 monitoring points, tunnel is provided with 40
Individual monitoring point (sets one) every 25m, totally 50 monitoring points.Using step III, IV, under C level chemical erosion environment
Underground structure deformation state is assessed, and distortion level is evaluated, as shown in table 9.
The deformable statistical and grade assessment of the underground structure of table 9
As shown in Table 9, the deflection of the underground structure is mostly in I levels and II levels, and remaining is in III level, does not go out
Existing IV levels deformation.Therefore, for the deformation of the rich water soft clay area underground structure, the monitoring point of I levels is reached for deformation values,
It wouldn't be handled；Reach the monitoring point of II levels for deformation values, daily monitoring should be strengthened, if deformation continues to develop, need to take
Related technical measures；Reach the monitoring point of III level for deformation values, it is necessary to the hair for the control deformation that takes further measures immediately
Exhibition, until stabilization, ensures operation security.
The present invention propose complete set it is detailed it is being combined with environmental activity grade, become for underground structure service phase
The evaluation method of shape, the ambient conditions of rich water soft clay area is investigated by reality first, determines the assessment item of environmental activity,
The grade assessment standard of environmental activity is established, quantitatively evaluating is carried out to environmental rating.Then according to actual survey achievement, it is determined that
The assessment item of rich water soft clay area underground structure service phase deformation, work out underground structure under varying environment function grade and deform
Grade assessment standard, the safe coefficient to malformation of efficiently and accurately reasonably evaluated, and is the safety of underground structure
It is on active service and the maintenance of underground structure deformation provides foundation.
Claims (9)
- A kind of 1. rich water soft clay area underground structure service phase deformation evaluating method, it is characterised in that：Comprise the following steps：(I) determines the assessment item of rich water soft clay area underground structure service phase environmental activityAir residing for underground structure, water quality, soil property environmental condition are reconnoitred, determine that the environment residing for concrete structure is made With assessment item, the environmental activity assessment item includes：General environment, bar in chlorine salt solution, chemical erosion environment；(II) establishes the grade assessment standard of environmental activityThe safe coefficient of environmental activity assessment item is evaluated, and according to from being normally divided into the effect of A~E five to danger Grade, wherein highest environmental activity grade should be taken when there are a variety of environment collective effects；(III) determines the assessment item of rich water soft clay area underground structure service phase deformationUnderground structure station and tunnel are monitored, determine the assessment item of underground structure labour phase deformation, the assessment item Including：Station vertical displacement, tunnel vertical displacement, station horizontal displacement, tunnel horizontal displacement, tunnel relative settlement, tunnel are received Hold back；(IV) establishes the grade assessment standard that underground structure service phase deforms under varying environment function gradeThe safe coefficient deformed to underground structure under varying environment function grade in step (III) is evaluated, and according to from safety Tetra- grades of I~IV are divided into danger,When deformation values reach I levels, underground structure still remains intact state, can not process；, should when deformation values reach II levels Send early warning and strengthen monitoring；After related technical measures are taken, fail the development of effectively control deformation, deformation values reach During III level, it is necessary to the development for the control deformation that takes further measures immediately, until stabilization；After deformation values are more than IV levels, Underground structure operation should be stopped immediately, take rational maintenance counter-measure.
- 2. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：General environment is classified as follows in step (I)：A levels are indoor annual relative humidity ＜ 60%, or it is long-term under water or In soil；B levels are indoor annual relative humidity >=60%, or outdoor environment；C levels are in fluctuation of water table area, or in dry and wet Alternate area.
- 3. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Bar in chlorine salt solution is classified as follows in step (I)：C levels are chlorine ion concentration >=100mg/L and≤500mg/L in water, and are had Chlorine ion concentration >=150mg/kg and≤750mg/kg in alternation of wetting and drying, or soil；D levels are chlorine ion concentration ＞ 500mg/L in water And≤5000mg/L, and have alternation of wetting and drying, or chlorion depth ＞ 750mg/kg and≤7500mg/kg in soil, and have dry and wet friendship Replace；E levels are chlorine ion concentration ＞ 5000mg/L in water, and have alternation of wetting and drying, or chlorion depth ＞ 7500mg/kg in soil, and There is alternation of wetting and drying.
- 4. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Chemical erosion environment is classified as follows in step (I)：B levels are in waterConcentration >=200mg/L and≤1000mg/L；C Level is in waterIn concentration ＞ 1000mg/L and≤4000mg/L, or soilConcentration ＞ 1500mg/kg and≤6000mg/ Aggressivity CO in kg, or acidity-basicity ph value >=5.5 of water and≤6.5, or water2In concentration >=15mg/L and≤40mg/L, or water Mg2+Concentration >=300mg/L and≤1000mg/L；D levels are in waterIn concentration ＞ 4000mg/L and≤10000mg/L, or soilConcentration ＞ 6000mg/kg and≤15000mg/kg, or acidity-basicity ph value >=4.5 of water and ＜ 5.5, or aggressivity in water CO2Mg in concentration ＞ 40mg/L and≤100mg/L, or water2+Concentration ＞ 1000mg/L and≤3000mg/L；E levels are in water In concentration ＞ 10000mg/L and≤20000mg/L, or soilConcentration ＞ 15000mg/kg, or acidity-basicity ph value >=4.0 of water And ＜ 4.5, or aggressivity CO in water2Concentration ＞ 100mg/L, or Mg in water2+Concentration ＞ 3000mg/L.
- 5. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Station vertical displacement, tunnel vertical displacement are classified as follows in step (IV)：I levels are when environmental rating is A levels, B levels, C When level, D levels, E levels, vertical displacement ＜ 3mm；II levels are vertical displacement >=3mm and ＜ when environmental rating is A levels, B levels, C levels 5mm；III level is the vertical displacement >=5mm and ＜ 10mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E During level, vertical displacement >=3mm and ＜ 5mm；IV levels are when environmental rating is A levels, B levels, C levels, vertical displacement >=10mm, work as ring When border grade is D levels, E levels, vertical displacement >=5mm.
- 6. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Station horizontal displacement is classified as follows in step (IV)：I levels be when environmental rating is A levels, B levels, C levels, D levels, E levels, Horizontal displacement ＜ 3mm；II levels are the horizontal displacement >=3mm and ＜ 5mm when environmental rating is A levels, B levels, C levels；III level is to work as When environmental rating is A levels, B levels, C levels, horizontal displacement >=5mm and ＜ 10mm, when environmental rating is D levels, E levels, horizontal displacement >=3mm and ＜ 5mm；IV levels are the horizontal displacement >=10mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E During level, horizontal displacement >=5mm.
- 7. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Tunnel horizontal displacement is classified as follows in step (IV)：I levels be when environmental rating is A levels, B levels, C levels, D levels, E levels, Horizontal displacement ＜ 3mm；II levels are the horizontal displacement >=3mm and ＜ 4mm when environmental rating is A levels, B levels, C levels；III level is to work as When environmental rating is A levels, B levels, C levels, horizontal displacement >=4mm and ＜ 6mm, when environmental rating is D levels, E levels, horizontal displacement >= 3mm and ＜ 4mm；IV levels are the horizontal displacement >=6mm when environmental rating is A levels, B levels, C levels, when environmental rating is D levels, E levels When, horizontal displacement >=4mm.
- 8. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Tunnel relative settlement is classified as follows in step (IV)：I levels be when environmental rating is A levels, B levels, C levels, D levels, E levels, Relative settlement ＜ 0.4 ‰ × LS × 50%；II levels are the relative settlement >=0.4 ‰ × LS when environmental rating is A levels, B levels, C levels × 50% and ＜ 0.4 ‰ × LS × 80%；III level be when environmental rating is A levels, B levels, C levels, relative settlement >=0.4 ‰ × LS × 80% and 0.4 ‰ × LS of ＜, when environmental rating is D levels, E levels, relative settlement >=0.4 ‰ × LS × 50% and ＜ 0.4 ‰ × LS × 80%；IV levels are the relative settlement >=0.4 ‰ × LS, when environment etc. when environmental rating is A levels, B levels, C levels When level is D levels, E levels, relative settlement >=0.4 ‰ × LS × 80%.Wherein, LS is along two monitoring point spacing of tunnel axial direction.
- 9. a kind of rich water soft clay area underground structure service phase deformation evaluating method according to claim 1, its feature exist In：Tunnel convergence is classified as follows in step (IV)：I levels are the tunnel when environmental rating is A levels, B levels, C levels, D levels, E levels Convergency value ＜ 2mm；II levels are the tunnel convergence value >=2mm and ＜ 4mm when environmental rating is A levels, B levels, C levels；III level is to work as When environmental rating is A levels, B levels, C levels, tunnel convergence value >=4mm and ＜ 5mm, when environmental rating is D levels, E levels, tunnel convergence Value >=2mm and ＜ 4mm；IV levels are the tunnel convergence value >=5mm, when environmental rating is D when environmental rating is A levels, B levels, C levels When level, E levels, tunnel convergence value >=4mm.
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| CN105844423A (en) * | 2016-04-06 | 2016-08-10 | 东南大学 | Method for assessing immersed tunnel operation phase health state |
| CN106407545A (en) * | 2016-09-12 | 2017-02-15 | 辽宁工程技术大学 | Soft soil foundation ditch safety evaluation method based on fuzzy comprehensive judgment method |
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