CN106874576A - The rod structure Deformation Prediction control method of underground structure is worn under a kind of tunnel - Google Patents
The rod structure Deformation Prediction control method of underground structure is worn under a kind of tunnel Download PDFInfo
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- CN106874576A CN106874576A CN201710048732.1A CN201710048732A CN106874576A CN 106874576 A CN106874576 A CN 106874576A CN 201710048732 A CN201710048732 A CN 201710048732A CN 106874576 A CN106874576 A CN 106874576A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 36
- 238000010276 construction Methods 0.000 claims abstract description 33
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 238000009412 basement excavation Methods 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims abstract description 7
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000011161 development Methods 0.000 claims description 4
- 230000000246 remedial effect Effects 0.000 claims description 3
- 238000004422 calculation algorithm Methods 0.000 description 5
- 230000036244 malformation Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract
A kind of rod structure Deformation Prediction control method the present invention relates to wear underground structure under tunnel, comprises the following steps：1) carry out Large span tunnel to be excavated, at the scene monitoring point on the upper and lower cloth of rod structure, monitoring point is monitored and collection site Monitoring Data；2) rod structure is divided into 1~6 seven stage of sedimentation and posterior settlement of excavation, grasps each stage rod structure itself inclination；3) by numerical simulation calculation, and with live rod structure monitoring point identical place cloth on corresponding monitoring point, each construction stage is obtained to sedimentation, the percentage of rod structure itself obliquity effects, given respective corresponding control standard value is multiplied by with percentage, along with engineering analogy, comprehensive analysis obtains the control standard value of each construction stage；4) the control standard value of each construction stage obtained with step (3) using field measurement value is compared, and according to both real time contrasts in work progress, reaches the purpose of prediction rod structure slope deformation.
Description
【Technical field】
The present invention relates to a kind of Deformation Prediction method of rod structure, and in particular to wear the post of underground structure under a kind of tunnel
Malformation forecast Control Algorithm, belongs to tunnel construction technical field.
【Background technology】
At present, increasing with major city underground engineering projects, particularly in surging big of current country's infrastructure
Under environment, the substantial amounts of underground tunnel project project of the urban planning such as Beijing, Shanghai, Tianjin, Nanjing, Guangzhou, Shenzhen, Xi'an.
Limited by existing building, surrounding enviroment, the phenomenon that existing building is worn under new subway tunnel is more and more universal.In order to true
The safety of building is protected, especially there is the safety of the building of column structure, must just study building settlement Characteristics of Development, according to
Each construction stage takes corresponding control measure to the influence degree difference of building and column structure.
General total settlement and the rate of settling mainly to post is controlled at present, but final settlement is reached and stablizes it
Before, total settlement control method has certain risk to building safety.In order to strictly control the safety of column structure, to cylinder knot
The inclination of structure is controlled, and the inclination slope of column structure is resolved into each different stage carries out Deformation Prediction control
System, the final safety for ensureing column structure.
Therefore, in order to solve the above technical problems, wearing the post of underground structure under a kind of tunnel of innovation it is necessory to provide
Malformation forecast Control Algorithm, to overcome the defect of the prior art.
【The content of the invention】
To solve the above problems, it is an object of the invention to provide the rod structure deformation that underground structure is worn under a kind of tunnel
Forecast Control Algorithm, its deviation dynamic that can in time grasp measuring point displacement monitor value and design predicted value analyzes reason, in time
Treatment, it is to avoid the accumulation of rod structure risk, makes safe construction be in aggressive status.
To achieve the above object, the technical scheme taken of the present invention is：The rod structure of underground structure is worn under a kind of tunnel
Deformation Prediction control method, it includes following construction procedure：
1) many pilot tunnel Large span tunnels that the rod structure of underground structure, is worn under are excavated, and rod structure is upper and lower at the scene
Monitoring point on cloth, is monitored and collection site Monitoring Data to monitoring point；
2), by rod structure be divided into 1 excavation sedimentation, 2 excavation sedimentation, 3 excavation sedimentation, 4 open
The sedimentation of digging, 5 sedimentations excavated, 6 seven stages of sedimentation and posterior settlement excavated, grasp each stage rod structure itself
Inclined Characteristics of Development；
3), by numerical simulation calculation, and with live rod structure monitoring point identical place cloth on corresponding monitoring point,
Each construction stage is obtained to sedimentation, the percentage of rod structure itself obliquity effects, given respective corresponding control is multiplied by with percentage
Standard value processed, along with engineering analogy, comprehensive analysis obtains the control standard value of each construction stage；Wherein, rod structure itself
Inclination is set as capital horizontal displacement SAWith post bottom horizontal displacement SBDifference and stake its length ratio, as slope tan α=
(SA-SB)/H；Within -30mm, its inclination is that difference limit value is less than 0.002 to rod structure total settlement controlling value；
4) the control standard value of each construction stage for, being obtained with step (3) using field measurement value is compared, in construction
During according to both real time contrasts, reach the slope deformation of prediction rod structure.
The rod structure Deformation Prediction control method that underground structure is worn under tunnel of the invention is further：The step 1)
In, many pilot tunnel Large span tunnel excavation steps are：1 is first excavated, and is separated by 10m or so and is excavated 2 again, and 10m is separated by with 2 faces
Left and right excavates 3 again, and be separated by 10m or so with 3 faces excavates 4 again, and be separated by 10m or so with 4 faces excavates 5 again
Portion, is separated by 10m or so and excavates 6 again with 5 faces.
The rod structure Deformation Prediction control method that underground structure is worn under tunnel of the invention is further：The step 4)
In, the monitoring point chosen in numerical model should match with the monitoring point of live cloth；Determine in the control standard of each construction stage
In, numerical simulation calculation result accounts for 60%~70%, and other similar engineering experiences account for 30%~40%.
The rod structure Deformation Prediction control method that underground structure is worn under tunnel of the invention is also：The step 4) in,
Before being contrasted with controlling value, bad value is rejected；Field monitoring value will be with calculated value dynamic contrast；In the posterior settlement stage, pass through
Rod structure field monitoring data, feedback, Dynamic Construction, more than raft foundation stress, take follow-up reinforcing and remedial measure in time.
Compared with prior art, the present invention has the advantages that：
1) in overall displacement control amount being decomposed into each step construction stage, each step construction stage is made to have clearly change
Shape control targe, with very strong operability；
2) there is integrated planning to emphasis observation measuring point displacement control, the emphasis of Construction control can be specified, accomplish that what is had puts
Arrow；
3) the deviation dynamic of measuring point displacement monitor value and design predicted value is grasped in time, analyzes reason, in time treatment, it is to avoid
The accumulation of risk, makes safe construction be in aggressive status.
4) can from rod structure sedimentation, rod structure itself is inclined carries out multi-faceted evaluation to the security of post, reliability,
Ensure that the safety of rod structure.
【Brief description of the drawings】
Fig. 1 is step 2 of the invention) after the completion of schematic diagram.
Fig. 2 is step 3 of the invention) the computation model figure of centre-pillar structure slope.
【Specific embodiment】
Refer to shown in Figure of description 1 and accompanying drawing 2, the present invention becomes to wear the rod structure of underground structure under a kind of tunnel
Shape forecast Control Algorithm, it includes following construction procedure：
(1) many pilot tunnel Large span tunnels that the rod structure of underground structure is worn under are excavated, at the scene the upper and lower cloth of rod structure
Upper monitoring point, is monitored and collection site Monitoring Data to monitoring point
(2) by rod structure be divided into 1 excavation sedimentation, 2 excavation sedimentation, 3 excavation sedimentation, 4 open
The sedimentation of digging, 5 sedimentations excavated, 6 seven stages of sedimentation and posterior settlement excavated, grasp each stage rod structure itself
The sedimentation Characteristics of Development such as inclination.
(3) by numerical simulation calculation, and with live rod structure monitoring point identical place cloth on corresponding monitoring point,
Each construction stage is obtained to sedimentation, the percentage of rod structure itself obliquity effects, given respective corresponding control is multiplied by with percentage
Standard value processed, along with engineering analogy, comprehensive analysis obtains the control standard value of each construction stage.
(4) the control standard value of each construction stage obtained with step (3) using field measurement value is compared, in construction
During according to both real time contrasts, reach the deformation of prediction rod structure slope and ensure the purpose of rod structure safety.
Further, in the step (1)：
1) the malformation forecast Control Algorithm applicable elements are in rock mass, and rock mass is linear elastic materials, cylinder incline with
Excavate carry out it is linearly increasing.
2) dynamic change on each construction stage stratum and supporting construction is understood by monitoring measurement, to ensure in work progress
It is middle deformation it is excessive when in time take measures ensure safety.
3) monitoring system will be monitored using reliable instrument.
4) monitoring point, datum mark are set and answer reasonable, and measuring point is protected during monitoring.
5) many pilot tunnel Large span tunnel excavation steps are：1 is first excavated, and is separated by 10m or so and is excavated 2 again, with 2 faces
It is separated by 10m or so and excavates 3 again, be separated by 10m or so with 3 faces excavates 4 again, and 10m or so is separated by again with 4 faces
5 are excavated, is separated by 10m or so with 5 faces and is excavated 6 again, such as Fig. 2.
In the step (3)：
1) rod structure itself is inclined and is set as capital horizontal displacement SAWith post bottom horizontal displacement SBDifference and stake its length
Ratio, as slope tan α=(SA-SB)/H, such as Fig. 2.
2) within -30mm, its inclination is that difference limit value is less than 0.002 to rod structure total settlement controlling value.
In the step (3)：
1) monitoring point chosen in numerical model should match with the monitoring point of live cloth, to ensure numerical result
Accuracy.
2) in the control standard of each construction stage determines, numerical simulation calculation result accounts for 60%~70%, and other are similar to
Engineering experience accounts for 30%~40%.
In the step (4)：
1) field measurement value accurately and reliably, before being contrasted with controlling value will will reject bad value, to ensure the accurate of comparison
Rationally.
2) field monitoring value will with calculated value dynamic contrast, to ensure construction safety.
3) the posterior settlement stage, by rod structure field monitoring data, timely feedback, Dynamic Construction, more than settlement Control
Value, takes follow-up reinforcing and remedial measure, effectively carries out rod structure settlement Control.
Specific embodiment above is only the preferred embodiment of this creation, is not used to limit this creation, all in this wound
Any modification, equivalent substitution and improvements for being done etc. within the spirit and principle of work, should be included in this creation protection domain it
It is interior.
Claims (4)
1. the rod structure Deformation Prediction control method of underground structure is worn under a kind of tunnel, it is characterised in that：Including following construction
Step：
1) many pilot tunnel Large span tunnels that the rod structure of underground structure, is worn under are excavated, at the scene on the upper and lower cloth of rod structure
Monitoring point, is monitored and collection site Monitoring Data to monitoring point；
2), by rod structure be divided into 1 excavation sedimentation, 2 excavation sedimentation, 3 excavation sedimentation, 4 excavation
Sedimentation, 5 sedimentations excavated, 6 seven stages of sedimentation and posterior settlement excavated, grasp each stage rod structure itself inclination
Characteristics of Development；
3), by numerical simulation calculation, and with live rod structure monitoring point identical place cloth on corresponding monitoring point, obtain
Each construction stage, to sedimentation, the percentage of rod structure itself obliquity effects, given respective corresponding control mark is multiplied by with percentage
Quasi- value, along with engineering analogy, comprehensive analysis obtains the control standard value of each construction stage；Wherein, rod structure itself is inclined
It is set as capital horizontal displacement SAWith post bottom horizontal displacement SBDifference and stake its length ratio, as slope tan α=(SA-
SB)/H；Within -30mm, its inclination is that difference limit value is less than 0.002 to rod structure total settlement controlling value；
4) the control standard value of each construction stage for, being obtained with step (3) using field measurement value is compared, in work progress
Both middle basis real time contrasts, reach the slope deformation of prediction rod structure.
2. the rod structure Deformation Prediction control method of underground structure is worn under tunnel as claimed in claim 1, it is characterised in that：
The step 1) in, many pilot tunnel Large span tunnel excavation steps are：1 is first excavated, and is separated by 10m or so and is excavated 2 again, with 2 palms
Sub- face is separated by 10m or so and excavates 3 again, and be separated by 10m or so with 3 faces excavates 4 again, and it is left to be separated by 10m with 4 faces
The right side excavates 5 again, and be separated by 10m or so with 5 faces excavates 6 again.
3. the rod structure Deformation Prediction control method of underground structure is worn under tunnel as claimed in claim 1, it is characterised in that：
The step 4) in, the monitoring point chosen in numerical model should match with the monitoring point of live cloth；In the control of each construction stage
During standard processed determines, numerical simulation calculation result accounts for 60%~70%, and other similar engineering experiences account for 30%~40%.
4. the rod structure Deformation Prediction control method of underground structure is worn under tunnel as claimed in claim 1, it is characterised in that：
The step 4) in, before being contrasted with controlling value, to reject bad value；Field monitoring value will be with calculated value dynamic contrast；Later stage
Subsidence stage, by rod structure field monitoring data, feedback, Dynamic Construction, more than raft foundation stress, take follow-up adding in time
Gu and remedial measure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048732.1A CN106874576A (en) | 2017-01-19 | 2017-01-19 | The rod structure Deformation Prediction control method of underground structure is worn under a kind of tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710048732.1A CN106874576A (en) | 2017-01-19 | 2017-01-19 | The rod structure Deformation Prediction control method of underground structure is worn under a kind of tunnel |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632244A (en) * | 2014-12-16 | 2015-05-20 | 上海交通大学 | Method for determining influences of land subsidence on subway tunnel settlement and protecting tunnel structure |
| CN105089698A (en) * | 2014-05-13 | 2015-11-25 | 中国铁道科学研究院城市轨道交通中心 | Settlement control method in process of enabling subway tunnel to penetrate through existing railway |
| CN106193083A (en) * | 2016-08-01 | 2016-12-07 | 北京市政建设集团有限责任公司 | A kind of subsidence control method of many pilot tunnels tunnel underbridge stake |
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2017
- 2017-01-19 CN CN201710048732.1A patent/CN106874576A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089698A (en) * | 2014-05-13 | 2015-11-25 | 中国铁道科学研究院城市轨道交通中心 | Settlement control method in process of enabling subway tunnel to penetrate through existing railway |
| CN104632244A (en) * | 2014-12-16 | 2015-05-20 | 上海交通大学 | Method for determining influences of land subsidence on subway tunnel settlement and protecting tunnel structure |
| CN106193083A (en) * | 2016-08-01 | 2016-12-07 | 北京市政建设集团有限责任公司 | A kind of subsidence control method of many pilot tunnels tunnel underbridge stake |
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Application publication date: 20170620 |