CN204457793U - The intelligent ruggedized construction of shield tunnel hoop - Google Patents
The intelligent ruggedized construction of shield tunnel hoop Download PDFInfo
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- CN204457793U CN204457793U CN201420780132.6U CN201420780132U CN204457793U CN 204457793 U CN204457793 U CN 204457793U CN 201420780132 U CN201420780132 U CN 201420780132U CN 204457793 U CN204457793 U CN 204457793U
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Abstract
The utility model discloses the intelligent ruggedized construction of a kind of shield tunnel hoop, by the intelligent fiber composite reinforcing of built-in distributed fiberoptic sensor laid along tunnel inner surface hoop, form the structure of reinforcing and monitoring integration.Its by binding material by intelligent FRP muscle together with tunnel inner adhesion, formed and there is the deck of excellent mechanical performances; Utilize the hoop convergence of the hoop strain computation structure of monitoring, and differentiate the performance change after structural strengthening.The utility model facility is simple, is convenient to engineering construction, and can solve a difficult problem for the reinforcing of existing shield tunnel, monitoring integration, the market competitiveness is strong, is applicable to large-scale promotion.
Description
Technical field
The present invention relates to a kind of tunnel reinforcement structure, be specifically related to the intelligent ruggedized construction of a kind of shield tunnel hoop.
Background technology
In recent years, along with the fast development of economy, district in all parts of the country starts the large construction period of city underground.Shield tunnel is little to surrounding environment influence because of its work progress, almost becomes the essential option building subway.Shield tunnel construction is typical splicing structure, adopts high-strength bolt that Pork-pieces concrete precast block is carried out vertical lateral connection, forms the structure with supporting capacity.But underground condition is complicated, the change such as groundwater table is comparatively large on the impact of structure external load, and shield tunnel construction can deform under these impacts, as lateral cross section convergence.Consider the aging of material, structure, the reinforcing of tunnel structure will have very large market.In reinforcing, need the long durability energy considering material, and the remarkable Shortcomings of reinforcing method technology based on Steel material conventional at present; Meanwhile, be also the problem that owner and engineering staff are concerned about to the change of structural performance after reinforcing.Develop a kind of intelligent reinforcement means of shield tunnel hoop having reinforcing and monitoring function concurrently and become technical problem urgently to be resolved hurrily.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides the intelligent ruggedized construction of a kind of shield tunnel hoop.
Technical scheme: for solving the problems of the technologies described above, the intelligent ruggedized construction of shield tunnel hoop provided by the invention, comprise intelligent fiber composite reinforcing and adhesives, described intelligent fiber composite reinforcing is laid along tunnel duct piece inwall hoop, and described adhesives is laid in tunnel duct piece inwall and covers described intelligent fiber composite reinforcing; The built-in distributed long gauge length optical fibre sensor of described intelligent fiber composite reinforcing, each sensing gauge length comprises the anchoring section every sebific duct and two ends being sheathed on fiber grating outside.
Particularly, described adhesives is preferably epoxy mortar or epoxy concrete.
Particularly, the length of described gauge length is the length every sebific duct, gets 0.2 ~ 0.5m.
Particularly, the sensor mechanism of described distributed long gauge length optical fibre sensor is Brillouin scattering mechanism, and its sensing accuracy is greater than 10 μ ε, and spatial resolution is not less than 10cm.
The present invention proposes the reinforcement means of the intelligent ruggedized construction of above-mentioned shield tunnel hoop simultaneously, comprises the following steps:
1) the intelligent fiber composite reinforcing of built-in distributed fiberoptic sensor is laid along tunnel duct piece inwall, then smear the binding material that viscosity is higher, form good deck;
2) in the normal use procedure after reinforcing, utilize structure ring that intelligent fiber composite reinforcing is monitored to stress distribution, by model of structural mechanics, the convergence of computation structure, differentiates the performance change of structure.
Particularly, described model of structural mechanics is consider the conjugate beam model of axial compression.
Beneficial effect: the present invention is compounded with fiber composite (FRP) muscle of sensor, achieves reinforcing and the monitoring in tunnel simultaneously, possesses following significant progress compared to existing technology:
1, have employed the system that fibre composite reinforcement adds high-durability binding material in the present invention, significantly improve the long-term effectiveness of reinforcement performance, be adapted to the handling characteristics of construction of tunnel, improve the application life in tunnel;
2, have employed the intelligent fiber composite reinforcing based on distributing optical fiber sensing in the present invention, can Long Period Health Monitoring be implemented after structural strengthening, improve the safe application performance of structure, reduce the generation of engineering accident, ensured the personal safety as well as the property safety of the people;
3, equipment in the present invention, facility are simple, and the market competitiveness is strong, also for the reinforcing of tunnel structure in the future and monitoring integration provide technological reserve.
Except technical problem, the technical characteristic forming technical scheme and the advantage brought by the technical characteristic of these technical schemes that the present invention recited above solves, the advantage that the other technologies feature comprised in the other technologies problem that the intelligent ruggedized construction of shield tunnel hoop of the present invention can solve, technical scheme and these technical characteristics bring, will be described in more detail by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
The structural representation figure of intelligent fiber composite reinforcing in Fig. 2 Fig. 1;
In figure: 1 concrete pipe sheet, 2 section of jurisdiction pieces, 3 intelligent fiber composite reinforcings, 4 binding materials, 5 sensors, 6 every sebific duct, 7 anchoring sections.
Detailed description of the invention
Embodiment:
As shown in Figure 1, shield tunnel is made up of concrete pipe sheet 1 and section of jurisdiction piece 2, is laid by intelligent fiber composite reinforcing 3, then smear the higher binding material of viscosity 4, form good deck along tunnel inner wall.Section of jurisdiction piece 2 need be laid in the middle part of gauge length as far as possible when laying intelligent fiber composite reinforcing.In normal use procedure after reinforcing, utilize structure ring that intelligent fiber composite reinforcing 3 is monitored to stress distribution, by model of structural mechanics, as conjugate beam model, can the convergence of computation structure, differentiate the performance change of structure.
As shown in Figure 2, the inner compound long gauge length optical fibre of intelligent fiber composite reinforcing 3, typical sensor gauge length comprises distributed fiberoptic sensor 5, anchoring section 7 every sebific duct 6 and two ends, and anchoring section 7 distributed fiberoptic sensor 5 and intelligent fiber composite reinforcing 3 secure bond is formed in the end every sebific duct 6.Wherein gauge length refers to the length every sebific duct 6, and generally at 0.2 ~ 0.5m, the selection of gauge length also should consider according to sensing accuracy and range.
During construction, comprise the following steps:
Part I, intelligent fiber composite reinforcing hoop reinforcing shield tunnel: intelligent fiber composite reinforcing is laid along tunnel hoop, then builds the binding material that one deck has moderate finite deformation ability, as epoxy mortar or epoxy concrete.Utilize fibre composite reinforcement to have the advantages such as high-strength, environmental resistance is good, realize reinforcing function in conjunction with adhesives.
Part II, the hoop utilizing intelligent fiber composite reinforcing to realize tunnel are monitored and assessment: bury the distributed fiberoptic sensor based on Brillouin scattering mechanism in intelligent fiber composite reinforcing, the stress distribution along intellectual rib can be monitored, utilize strain can calculate the hoop convergence in tunnel, differentiate the performance of structure.
Intelligent fiber composite reinforcing can the webbed structure of shape, and the distributed fiberoptic sensor of its inside is interconnected or is connected to optical fibre interrogation instrument separately, and then is connected to server, and above-mentioned connection adopts the known technology of this area to be realized.
Above-mentioned intelligent fiber composite reinforcing buries the fibre composite reinforcement of distributed fiberoptic sensor in being, sensor mechanism is Brillouin scattering mechanism.During the hoop convergence of monitoring strain calculation tunnel, the computation model of employing is the conjugate beam model considering axial compression.
Below by reference to the accompanying drawings embodiments of the present invention are described in detail, but the present invention is not limited to described embodiment.For those of ordinary skill in the art, in the scope of principle of the present invention and technological thought, embodiment is carried out to these embodiments and carries out multiple change, amendment, replacement and distortion and still fall within the scope of protection of the present invention.
Claims (4)
1. the intelligent ruggedized construction of shield tunnel hoop, it is characterized in that: comprise intelligent fiber composite reinforcing and adhesives, described intelligent fiber composite reinforcing is laid along tunnel duct piece inwall hoop, and described adhesives is laid in tunnel duct piece inwall and covers described intelligent fiber composite reinforcing; The built-in distributed long gauge length optical fibre sensor of described intelligent fiber composite reinforcing, each sensing gauge length comprises the anchoring section every sebific duct and two ends being sheathed on fiber grating outside.
2. the intelligent ruggedized construction of shield tunnel hoop according to claim 1, is characterized in that: described adhesives is epoxy mortar or epoxy concrete.
3. the intelligent ruggedized construction of shield tunnel hoop according to claim 1, is characterized in that: the length of described gauge length is the length every sebific duct, gets 0.2 ~ 0.5m.
4. the intelligent ruggedized construction of shield tunnel hoop according to claim 1, is characterized in that: described distributed long gauge length optical fibre sensor is the sensor based on Brillouin scattering mechanism, and its sensing accuracy is greater than 10 μ ε, and spatial resolution is not less than 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420780132.6U CN204457793U (en) | 2014-12-12 | 2014-12-12 | The intelligent ruggedized construction of shield tunnel hoop |
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| CN201420780132.6U CN204457793U (en) | 2014-12-12 | 2014-12-12 | The intelligent ruggedized construction of shield tunnel hoop |
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| CN204457793U true CN204457793U (en) | 2015-07-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389621A (en) * | 2014-12-12 | 2015-03-04 | 东南大学 | Circumferential intelligentized reinforcement structure and method of shield tunnel |
| CN109026067A (en) * | 2018-08-14 | 2018-12-18 | 福建工程学院 | A kind of circumferential intelligent ruggedized construction of shield tunnel and reinforcement means |
| CN111120005A (en) * | 2019-12-31 | 2020-05-08 | 华中科技大学 | Distributed tunnel reinforcing steel ring failure monitoring device and method |
-
2014
- 2014-12-12 CN CN201420780132.6U patent/CN204457793U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389621A (en) * | 2014-12-12 | 2015-03-04 | 东南大学 | Circumferential intelligentized reinforcement structure and method of shield tunnel |
| CN109026067A (en) * | 2018-08-14 | 2018-12-18 | 福建工程学院 | A kind of circumferential intelligent ruggedized construction of shield tunnel and reinforcement means |
| CN111120005A (en) * | 2019-12-31 | 2020-05-08 | 华中科技大学 | Distributed tunnel reinforcing steel ring failure monitoring device and method |
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