CN106382124A - Flexible force transferring member as well as tunnel joint structure with force transferring member and construction method thereof - Google Patents
Flexible force transferring member as well as tunnel joint structure with force transferring member and construction method thereof Download PDFInfo
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- CN106382124A CN106382124A CN201611022074.0A CN201611022074A CN106382124A CN 106382124 A CN106382124 A CN 106382124A CN 201611022074 A CN201611022074 A CN 201611022074A CN 106382124 A CN106382124 A CN 106382124A
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- joint
- flexible
- force transferring
- tunnel
- deformation
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention relates to a flexible force transferring member for limiting the deformation of a joint as well as a tunnel joint structure with the force transferring member and a construction method thereof. The flexible force transferring member comprises a force transferring component and two sleeves, wherein the force transferring component is used for penetrating through a tunnel joint along a longitudinal direction; the two sleeves are arranged on two sides of the force transferring component and are used for being fixedly arranged in a secondary lining layer; at least one end of the force transferring component can be mounted inside the sleeves in a sleeving manner and in a relative free movement way; the force transferring member is provided with a first limiting member; first cooperative limiting members used for limiting the further stretch-draw deformation of the joint are arranged inside the sleeves; through controlling a distance among the first limiting member and the first cooperative limiting members, the range of the telescopic amount of the joint is controlled. The deformation requirement on the joint can be met through the arrangement of the flexible force transferring member; through controlling the distance among the first limiting member and the first cooperative limiting members, the joint can be prevented from producing continuous deformation after generating large deformation; further, the load-bearing ability of a tunnel structure is improved.
Description
Technical field
The invention belongs to tunnel or Tunnel Engineering liner structure technical field and in particular to a kind of restriction joint distortion soft
Property force transmission element, the tunnel joint design with this force transmission element and its construction method.
Background technology
China have a lot of areas, especially southwest geology complicated topographical conditions, crustal movement enlivens, active fault sends out
Educate, many Hydro tunnels and public affairs (ferrum) road tunnel inevitably pass through active breaking belt.At tunnel spanning active fault position, live
Dynamic circuit breaker is split the wiggly slippage of generation and suffers from disposable dislocation during earthquake will make tunnel lining subject to severe risks of damage.At present, right
The liner structure of across active fault area tunnel, generally adopts following methods in engineering：
(1) backbreak+filling：Expand excavated section, using two-layer lining cutting.Outer layer lining cutting tomography is big compared with normal section, internal layer
Lining section is identical with normal section, filling high compression layer between outer layer and inner lining, and high compression thickness degree is according to Fault Dislocation
Amount determines.When tomography occurs the changing of the relative positions, the changing of the relative positions amount of country rock and peripheral lining cutting is absorbed by high compression layer first, and inner lining is still
Normal work can be kept.Because the method is relatively costly, it is usually applicable only to the less situation of active fault bandwidth.
(2) hinged design：The method arranges a flexible joint every certain length on liner structure, by overall lining cutting
If cutting into stem portion.Because flexible joint rigidity is far below normal section, under fault movement, country rock is transferred to the change of lining cutting
Shape major part is undertaken by flexible joint, and normal lining section has obtained effective protection.The method be applied to tunnel section larger,
Excavated section is not situations such as malleable, tomography bandwidth be larger.
Because the hinged design suitability is good, construction costs is relatively low, is applied in multiple engineerings.But, disconnected
Fault moves region, and due to tectonic movement effect, country rock is generally relatively more broken, and the easy here of subsoil water is enriched with, and flexible joint is
The weak link of tunnel-liner waterproof.What flexible joint antiseepage not only affected tunnel normally uses safety, also directly influences area
The problems such as after domain water and soil conservation, shake, tunnel is overhauled.Therefore, carry out the tunnel flexible joint of Cross-fault leveling region waterproof have higher
Engineering application value.
After large deformation occurs, traditional jointing can be distorted or even failure by shear with the lasting increase of deformation, makes
Tunnel water proofing is become to lose efficacy.For the higher tunnel of waterproof requirement, the inefficacy of joint waterproofing will bring greater risk for tunnel.
In order to ensure tunnel structure safety and meet track clearance, reconstruction can only be removed, cause great security risk and high
Construction cost.
Content of the invention
The purpose of the present invention is for overcoming above-mentioned the deficiencies in the prior art, providing a kind of flexible force transmission limiting joint distortion
Part, the tunnel joint design with this force transmission element and its construction method.
In order to reach above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of flexible force transmission part limiting joint distortion, including in order to the force transferring part longitudinally through tunnel joint, and
Located at described force transferring part both sides in order to be fixed on two sleeves of two lining in the layers, at least one end of described force transferring part can phase
To the free-moving inside being sleeved on described sleeve, described force transmission element is provided with the first locating part, and the inside of described sleeve sets
There is to limit the first cooperation locating part of the further tension deformation of joint, by controlling described first locating part and described first
The distance between cooperation locating part, carrys out the scope of control joint stroke.
Traditional joint can not effectively control the scope of stroke nor by the ultimate bearing capacity of control joint
Carry out butt joint to be effectively protected.After large deformation occurs, joint can be distorted even with the lasting increase of deformation
Failure by shear, causes tunnel water proofing to lose efficacy.For the higher tunnel of waterproof requirement, the inefficacy of joint waterproofing will be tunnel band
Carry out greater risk.In order to ensure tunnel structure safety and meet track clearance, reconstruction can only be removed, cause great safety wind
Dangerous and high construction cost.
On the one hand the setting of flexible force transmission part can meet the deformation requirements of butt joint, on the other hand pass through control first spacing
The distance between part and the first cooperation locating part, are avoided that joint produces lasting deformation after there is large deformation, and then improve
The bearing capacity of tunnel structure, makes the deformation energy of country rock access effective suppression, it is to avoid the feelings that country rock appearance deteriorates further
Condition.Greatly reduce the security risk of tunnel structure and remove the construction cost rebuild.
Additionally, flexible force transmission part can bear large deformation；Effective protection sealing can be played when deformation reaches a certain amount of again
The effect of band, and then improve the water resistance of joint.
Described first locating part is the protuberance being fixedly arranged on described force transferring part end, and described first cooperation locating part is solid
It is located at the stop part in described sleeve inner end face, described stop part hinders described protuberance away from the motion of described sleeve and then restriction
The further tension deformation of described flexible joint.
Realize limit function in the form of protuberance and stop part, structure is simple, is hardly damaged, with low cost, operation
Convenient.
Described force transferring part is reinforcing bar, and described first locating part is the nut being threadedly connected to described reinforcing bar two ends；Described
First cooperation locating part is the steel plate being fixed on described sleeve inner end face, and the center of described steel plate is provided with and passes through in order to described reinforcing bar
Perforate, the external diameter of described perforate is less than the external diameter of described nut.
Using nut as the first locating part, modular construction and its processing technology are simple, easy construction.
Gap between the centre bore of described reinforcing bar and described steel plate is sealed using soft foam.
The section of described protuberance is in strip, is connected with the body of rod of described force transmission element in center；Described stop part
It is provided with and corresponding with described strip shape be available for the export department that described protuberance passes through, when described protuberance and described export department
When staggering, described stop part can hinder described protuberance away from the motion of described sleeve；Described sleeve goes out described in being configured to
Oral area is longitudinally disposed.
After sleeve is fixed to two linings, in that context it may be convenient to force transmission element is extend into set when protuberance is alignd with export department
In cylinder, easy to operate.In the presence of protuberance deadweight, after extending into sleeve, the strip of protuberance can nature for force transmission element
It is in horizontality, realization is staggered with export department.The cross sectional shape of protuberance is symmetrical, is conducive to the uniform stressed of component.Should
Structure fabrication is simple, easy to operate, with low cost, is easy to promote.
The section of described protuberance is in polygon, and described stop part is provided with the export department being available for that described protuberance passes through, when
When described protuberance and described export department stagger, described stop part can hinder described protuberance away from the motion of described sleeve.
The cross sectional shape of protuberance is symmetrical, is conducive to the uniform stressed of component.This structure fabrication is simple, easy to operate, becomes
This is cheap, is easy to promote.
The shape of described export department is corresponding with described polygonal shape, can achieve force transmission element by rotating force transmission element
Limit function with sleeve.
Gap between described export department and described force transferring part is sealed using soft foam.
Described force transmission element is power transmission reinforcing bar, and described sleeve is steel pipe, the reinforcement welding in described steel pipe and described two linings.
A kind of tunnel joint design with this force transmission element,
Including the first lining laid successively along tunnel cross-section ecto-entad, waterproof layer, deformation layer and two linings, wherein across
It is provided with flexible joint along tunnel ring, described flexible joint will be longitudinal along tunnel to described deformation layer and two linings at tomography transverse section
It is divided into adjacent two parts；Width is provided with the contact surface of described waterproof layer and described deformation layer and is more than described flexible joint
First waterstop in order to prevent the infiltration into described flexible joint of middle first surface width；
It is provided with the described flexible force transmission part longitudinally through tunnel joint in described two linings.
Described first waterstop is flexible water stop, and at least part of belt body being contacted with described first surface is configured
It is the first lax belt body along tunnel longitudinal direction in relaxed state；In the described flexible joint inside described first waterstop
It is provided with the first joint Grouting Pipe.
Traditional waterstop is all attached at the surface of structure with the state stretched.Tunnel-liner water joint in Cross-fault leveling area is tied
Structure overcomes traditional mindset and technology prejudice, and waterstop is set to relaxed state in joint area, when tomography is wrong
During the raw large deformation of movable property, the lax belt body of waterstop gradually stretches with the increase of tension deformation, it is to avoid traditional waterstop
Stretch belt body in deformation because stretching excessive and direct impaired deficiency, and then big change can be born in fault movement
Shape.Herein, even if waterstop is contacted with the medium-tight of surrounding, but as long as not being straight configuration, with the deformation sealing of medium
Band has certain belt body and stretches deposit, as relaxed state.
It is being provided with Grouting Pipe in the joint inside the first waterstop, can supplemented after flexible joint is deformed
Grouting water-tight, while recovering the mechanical structure performance of flexible joint, still meets waterproof requirement, so that blank area is located all the time
Under anhydrous environment, increased the service life of joint.This waterproof joint structure easy construction, with low cost, structure is simple,
Beneficial to the control of construction quality, have preferable deformation performance and barrier performance concurrently, there is wide market prospect.
Described first waterstop is back sticking type rubber fastening band.During construction, first the first waterstop is pasted to splash guard
Surface, and then carry out follow-up construction procedure, convenient and quick construction.
The part that the two ends of described first waterstop are contacted with described deformation layer is the first fixing belt body, solid described first
The inner side determining belt body is provided with end consolidation grouting pipe.
Carry out supplementing antiseepage grouting using end consolidation grouting pipe after flexible joint is deformed, can effectively recover
Fixing adhesion strength between one waterstop and two linings, and then improve the waterproof effect to flexible joint for first waterstop, really
Protect the secondary waterproof performance after large deformation.
It is provided with to prevent the second waterstop seeping water further into described flexible joint in described two linings, described
The width of the second waterstop is more than described flexible joint and serves as a contrast in the layer width described two.Second waterstop is set, is to flexibility
The antiseepage deposit of joint, further ensures that the barrier performance of joint.
The two ends of described second waterstop are fixed in described two linings, and described second waterstop is located in described joint
At least partly belt body is configured to be in longitudinally the second lax belt body of relaxed state along tunnel.Second waterstop is in deformation joint
The lax belt body of setting, may further ensure that waterproof effect after standing large deformation for the joint, and then increase flexible joint is born
The performance of large deformation.
It is in stacked state that described second lax belt body is configured to along the longitudinal part belt body in tunnel, and easy construction is easy to
Operation.
In the second joint Grouting Pipe being provided with ring in the described flexible joint outside described second waterstop.Sending out
After raw large deformation, joint Grouting Pipe is located at the outside of the second waterstop, and the serosity supplementing filling can be made to be in two waterstops
Between it is ensured that the serosity supplementing can play effective effect, and the effect protecting the second waterstop further can be played, carry
The service life of high joint.
The end that described second waterstop is contacted with described two linings is provided with the hydro-expansive rubber bar of ring.Guaranteeing to connect
Head along tunnel cross-section waterproof requirement when, longitudinal water resistance of tunnel structure, comprehensive reinforcement tunnel can be further functioned as
Flexible joint and the holistic resistant behavior of peripheral structure.
Described first lax belt body and/or the second lax belt body are configured to along the longitudinal cross sectional shape in tunnel be in wave
Shape.The first and/or second waterstop is made to reserve enough relaxed length to adapt to the demand of large deformation.
It is provided with drain pipe between the outside of the described first lax belt body and described waterproof layer, on the body of described drain pipe
It is provided with osculum, and along one week arrangement of tunnel ring.
At traditional construction seam, waterproof is come using flat type rubber fastening band, hydro-expansive rubber.Grouting Pipe is along tunnel (road)
One week arrangement of ring；Drain pipe is set in tunnel joint, timely the infiltration outside waterstop can be discharged, reduce outside joint
The external water pressure of side and lax belt body is it is ensured that adhesive property between waterstop canned paragraph and splash guard.Draining is set in this place
Pipe, while draining, lining cutting water pressure can not only be reduced moreover it is possible to improve the stress performance of material at this, further play with
Synergism between waterstop, and then mechanical property and the waterproof effect of joint design can be effectively increased.
The cross sectional shape of described flexible joint is in T-shape, and wherein said flexible joint is located at described deformation in the layer first
Width is more than positioned at described two lining in the layer second width；
Described flexible joint adopts plastic concrete material to fill, and described plastic concrete material is by the raw material of following components
Make by weight ratio：Cement：10-20 part；Sand：70-80 part；Water：20-30 part；Stone：70-90 part；Additive：2-4 part；Swollen
Profit soil：2-4 part；Clay：6-9 part.Foam concrete deformation layer is combined by flexible joint form with " T " font movement joint, energy
Enough bear fault movement deformation.
Due to there being higher requirement to deformation performance, therefore commonly used foam concrete connects traditional joint as flexibility
The packing material of head.But although foam concrete can meet the deformation requirements of joint, its infiltration coefficient is larger, is therefore
The weak link of whole joint waterproofing.Additionally, the version that traditional jointing adopts, for whether plasticity coagulation can be filled
Soil, filled what kind of plastic concrete to can be only achieved the mechanics purpose of joint be all uncertain, therefore traditional concrete matched
Side can not meet corresponding mechanical requirements.
On the other hand, in traditional jointing construction, construction interface is the weakest link of joint preventing and treating.Traditional movement joint adopts
" 1 " font, under fault movement effect, " 1 " font movement joint is the most easily sent out with bubble concrete layer and two lining concrete layer interfaces
Raw failure by shear, carries out leading to barrier performance to decline.
Using plastic concrete as T font movement joint packing material, the infiltration coefficient due to plastic concrete is less than
Foam concrete, T-shaped movement joint one side can increase the permeation pathway of infiltration water, improves anti-permeability performance；On the other hand, tomography
Under changing of the relative positions effect, " T " font movement joint can reduce the probability that interface occurs to destroy.
Preferably, described plastic concrete material is made up by weight ratio of the raw material of following components：Cement：14-16 part；
Sand：74-76 part；Water：24-26 part；Stone：79-81 part；Additive：2.8-3.2 part；Bentonite：2.8-3.2 part；Clay：7.5-
8.5 part.
Described plastic concrete material also includes the vinal of 0.8-1.2%.
Described first width ratio the second width width 10-20cm.
Described deformation layer adopts foamed concrete material to fill, and described foamed concrete material is pressed by the raw material of following components
Weight proportion is made：Cement：550-650 part；Perlite：100-115 part；Water：220-280 part；Additive：45-55 part；Poly- third
Alkene fiber：0.5-1.5 part, additionally, the addition of foam is 0.7-0.9m3/m3.
Deformation layer be located at lining cutting and two lining between, filler firstly the need of having certain intensity, when confined pressure does not occur
During detrusion, deformation layer can undertake country rock to the static loads of two lining transmission it is ensured that the stablizing of tunnel；Meanwhile, filling material
Material also needs to there is good deformation performance, and when country rock occurs detrusion, deformation layer can absorb the radial direction lining cutting of country rock
The deformation of transmission.Using this formula can take into account above-mentioned requirements, the foam concrete produced is compared with regular-type foam concrete
There is higher intensity；Elastic modelling quantity is much smaller than two lining concrete simultaneously, and ductility is better than regular-type foam concrete, retains good
Deformation performance.
Using this formula foam concrete as deformation layer, the soft of movement joint can be filled with using plastic concrete
Between property joint, there is more preferable synergism, have good deformation performance and water resistance concurrently.
Described deformation layer adopts foamed concrete material to fill, and described foamed concrete material is pressed by the raw material of following components
Weight proportion is made：Cement：600-610 part；Perlite：105-110 part；Water：240-260 part；Additive：48-52 part；Poly- third
Alkene fiber：0.9-1.1 part, additionally, the addition of foam is 0.75-0.85m3/m3.
Described deformation layer adopts foam concrete deformation layer, and its thickness determines according to tomography magnitude of misalignment.Described two linings are
Reinforced concrete floor.
There is the construction method of the tunnel joint design of this force transmission element, comprise the following steps：
Step 1：First waterstop is fixed on splash guard, performs the foam concrete deformation layer of side；
Step 2：After the completion of two lining steel reinforcement cage colligations, the force transferring part with the first locating part is put into the sleeve of side
Interior it is ensured that described sleeve is fixedly connected with the first cooperation locating part, and described sleeve is fixed on two lining steel reinforcement cages；
Step 3：Erect two lining templates and the stopper template of the corresponding side of movement joint, after template erects, pour two linings；
Step 4：Remove two lining templates and the described stopper template of side, set up stopper template and the change of movement joint opposite side
Shape seam inner wall form, after-pouring movement joint；
Step 5：Form removal, performs the foam concrete deformation layer of opposite side；
Step 6：Repeat step 2 and step 3, the opposite side sleeve of fixing force transfer part, perform two linings of opposite side.
The invention has the beneficial effects as follows：
On the one hand the setting of flexible force transmission part can meet the deformation requirements of butt joint, on the other hand pass through control first spacing
The distance between part and the first cooperation locating part, are avoided that joint produces lasting deformation after there is large deformation, and then improve
The bearing capacity of tunnel structure, makes the deformation energy of country rock access effective suppression, it is to avoid the feelings that country rock appearance deteriorates further
Condition.Greatly reduce the security risk of tunnel structure and remove the construction cost rebuild.
Additionally, flexible force transmission part can bear large deformation；Effective protection sealing can be played when deformation reaches a certain amount of again
The effect of band, and then improve the water resistance of joint.
Brief description
Fig. 1 is flexible joint structure top view；
Fig. 2 is movement joint section cross-sectional view；
Fig. 3 is normal lining cutting section cross-sectional view；
Fig. 4 is flexible force transmission part structural representation；
Fig. 5 is flexible force transmission part extended state schematic diagram；
Fig. 6 is flexible force transmission part compressive state schematic diagram；
Fig. 7 is flexible force transmission part shearing condition a schematic diagram；
Fig. 8 is flexible force transmission part shearing condition b schematic diagram；
Wherein, 1- shotcrete layer, 2-PVC splash guard, 3- foam concrete deformation layer, 4- bis- lined steel reinforced concrete
Layer, 5- back sticking type deformable rubber waterstop, 6- drain pipe, 7- the first joint Grouting Pipe, bury waterstop in 8- deformable, 9- meets
Water-expansible rubber bar, 10- " T " font movement joint, 11- flexible force transmission part, 12- steel pipe, 13- power transmission reinforcing bar, 14- circular steel plate,
15- nut, 16- end consolidation grouting pipe, 17- the second joint Grouting Pipe, 18- country rock.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
A kind of Cross-fault leveling area tunnel-liner waterproof joint structure, the shotcrete layer 1 of country rock 18 is close in main inclusion
The first lining constituting, the waterproof layer that PVC splash guard 2 is constituted, the deformation layer that foam concrete deformation layer 3 is constituted, two lined steel muscle mix
Two linings that solidifying soil layer 4 is constituted, and the deformable waterstop between waterproof layer and deformation layer contact interface, preferably use
Back sticking type deformable rubber waterstop 5, is provided with the flexible force transmission part 11 longitudinally through tunnel joint in two linings.
Flexible force transmission part 11 is made up of steel pipe 12 and power transmission reinforcing bar 13, and steel pipe 12 is embedded in two lined steel muscle of movement joint both sides in advance
In concrete layer 4, and serve as a contrast the reinforcement welding in reinforced concrete floors 4 with two.Power transmission reinforcing bar 13 external diameter is less than the internal diameter of steel pipe 12,
The two ends of power transmission reinforcing bar 13 are provided with nut 15, and are respectively placed in two steel pipes 12.The inner of steel pipe 12 is provided with circular steel plate 14,
Circular steel plate 14 is provided with the hole passing through in order to power transmission reinforcing bar 13, and the external diameter of this hole is less than the external diameter of nut 15.Work as flexibility
Joint distortion within the specific limits when, power transmission reinforcing bar 13 can in steel pipe 12 Free Transform；When flexible joint deforms more than one
During definite value, power transmission reinforcing bar 13 will be constrained by steel pipe 12, as shown in Figure 5-Figure 8, and then undertake pulling force and shearing, thus to back of the body patch
Bury waterstop 8 in formula deformable rubber waterstop 5, deformable to play a protective role.
Preferably, can arrange in deformable and bury waterstop 8 and " T " font movement joint 10.
Back sticking type deformable rubber waterstop 5 two ends are affixed on shotcrete layer 1, are in lax shape in deformation joint position
State, preferably adopts corrugated in deformation joint position, can bear tension and compression, detrusion.Additionally, also can adopt in deformation joint position
With the form of overlapping portions, as long as ensureing that belt body has certain stretching and lays in.
Corrugated position behind is provided with drain pipe 6, leads to its outside P VC splash guard 2 to destroy when flexible joint deforms
Afterwards, the subsoil water of infiltration can be discharged by drain pipe 6, to reduce the water pressure that lining cutting undertakes.
It is provided with the in " T " the font movement joint 10 (flexible joint) positioned at back sticking type deformable rubber waterstop 5 inner side
One joint Grouting Pipe 7.Back sticking type deformable rubber waterstop 5 two ends are additionally provided with end consolidation grouting pipe 16, when flexible joint is entered
When row is safeguarded or repaired after shaking, secondary grouting can be carried out by end consolidation grouting pipe 16, improve the water proofing property of joint.
Bury waterstop 8 two ends in deformable and be fixed on two lining reinforced concrete floors 4, adopting between middle T-shape movement joint can
Bear the corrugated of large deformation.Hydro-expansive rubber bar 9 is posted at its two ends, when there being water to two lining reinforced concrete floor 4 infiltrations,
Hydro-expansive rubber bar 9 volume expands and carries out sealing.The second joint Grouting Pipe 17 is left in the outside of middle corrugated portion,
When repairing after flexible joint is safeguarded or shaken, secondary grouting can be carried out by the second joint Grouting Pipe 17, improve flexibility and connect
The water proofing property of head.
Foam concrete deformation layer 3 adopts foam concrete filling, and foam concrete should have good deformation performance
Absorb Fault Dislocation, should also have the stability that certain intensity ensures lining cutting under regular service conditionss.According to residing for engineering
Matter condition, determines that (density is not more than 800kg/m3 to foam concrete mechanical property requirements, and comprcssive strength is not less than 2MPa, tension
Intensity is not less than 0.5MPa, and elastic modelling quantity is not more than 800MPa).Improved by compositions such as additive, perlite, polypropylene fibres
The physical and mechanical property of foamed concrete material；Foam concrete match ratio shown in table 1, density 700kg/m3, uniaxial compressive
Intensity about 2.8MPa, tensile splitting strength 0.7MPa, elastic modelling quantity about 300MPa.
Table 1 foam concrete match ratio
Foam concrete deformation layer 3 and two lining reinforced concrete floors 4 are separated by " T " font movement joint 10, are flexible joint
Primary deformable part.In addition to deformation performance requires, because movement joint is the weak link of whole joint waterproofing, movement joint filling material
The infiltration coefficient of material can not be too big, therefore, selected plastic concrete material.Determine the cooperation of plastic concrete according to mechanical analyses
Than as shown in table 2.The plastic concrete mechanics index of physics preparing is as follows：Uniaxial compressive strength 2.5MPa, split tensile strength
0.3MPa, elastic modelling quantity 430MPa, infiltration coefficient<1e-7cm/s.If there are certain requirements to tensile strength, 1% left side also can be added
Right vinal.
Table 2 plastic concrete match ratio
A kind of construction method of Cross-fault leveling area tunnel-liner waterproof joint structure, comprises the following steps：
(1) back sticking type rubber water-proof belt construction：After the completion for the treatment of splash guard construction, the fixation of back sticking type rubber fastening band 5 is adopted
With double weld seam Hot weldings, waterstop is fixed on splash guard it is ensured that middle part is wavy.
(2) side foam concrete deformation layer construction：By chassis set up template, pour into a mould foam concrete, to be achieved one
After determining intensity, form removal.
(3) flexible force transmission part 11 one end is fixed：After the completion for the treatment of two lining steel reinforcement cage colligations, first by power transmission reinforcing bar with nut even
Connect, and put in thick walled steel tube；Then, by circular steel plate and thick walled steel tube weldering knot, and guarantee that power transmission reinforcing bar passes through circular steel plate
Centre bore；Finally, thick walled steel tube is passed through weldering knot to be fixed on the reinforcing bar in two lined steel reinforced concretes.To power transmission reinforcing bar and circle
Gap between steel plate centre bore is sealed using soft foam it is ensured that concrete placement intermediate gap is not close by serosity
Envelope.
(4) bury rubber fastening band one end in fix：Rubber fastening band is buried in fixing using spacer bar and reinforcing bar card.Treating
Cast concrete space setting spacer bar, spacer bar is circumferentially at a certain distance (for example：60cm) set together, reinforcing bar card
With spacer bar iron wire colligation.
(5) deformation slit formwork erects：Two lining templates and shelves head plate are erected by tunnel double-lining chassis.In bury outside waterstop
Using broken line type wooden blocking plate with holes, perforate is concentric with reinforcing bar latch.Outside blocking plate compression back of the body patch waterstop.In only bury
Inside water band, blocking plate is fixed on chassis.
(6) movement joint filling：After two lining concrete reach some strength, remove mould.Two lining chassis are pushed ahead,
Set up stopper template in " T " font movement joint opposite side, power transmission reinforcing bar passes through blocking plate by the preformed hole on the blocking plate of outside,
Inner side blocking plate is fixed on two lining chassis.Inside and outside side block head plate by bury rubber fastening band compression, and guarantee middle part be wave
Type.Bury the joint quantity of rubber fastening band as far as possible in reducing, in blank area, its water resistance is guaranteed using weldering knot.
After template is in place, " T " font movement joint buries cast Plastic Concrete in outside in waterstop, in cast
During guarantee in bury in the middle part of waterstop be undaform, correct in time when deformation occurs.
Reach after some strength after plastic concrete, form removal.
(7) opposite side foam concrete deformation layer construction：Template is set up by chassis, pours into a mould foam concrete, to be achieved
After some strength, form removal.
(8) the flexible force transmission part other end is fixed：After the completion for the treatment of opposite side two lining steel reinforcement cage colligation, first will be another for power transmission reinforcing bar
One end passes through circular steel plate, and is connected with nut, puts in opposite side thick walled steel tube；Then, by circular steel plate and thick walled steel tube
Weldering knot, and guarantee that power transmission reinforcing bar passes through circular steel plate centre bore；Finally, thick walled steel tube is fixed on two lined steel muscle by weldering knot to mix
On reinforcing bar in solidifying soil.And the gap between power transmission reinforcing bar and circular steel plate centre bore is sealed using soft foam, really
Protect concrete placement intermediate gap not sealed by serosity.
(9) bury the rubber fastening band other end in fix：Rubber fastening band is buried in fixing using spacer bar and reinforcing bar card.?
Concrete space to be cast arranges spacer bar, and spacer bar is circumferentially at a certain distance (for example：60cm) set together, reinforcing bar
Card and spacer bar iron wire colligation.
(10) opposite side two lining concrete cast：Two lining templates and shelves head plate are erected by tunnel double-lining chassis, and carries out
Concrete is poured into a mould.Reach after some strength after concrete, form removal.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to embodiment will be apparent from for those skilled in the art, as defined herein general
Principle can be realized without departing from the spirit or scope of the present invention in other embodiments, is not described in detail
Part, be prior art, here is not repeated.Therefore, the present invention is not intended to be limited to these enforcements shown in this article
Example, and it is to fit to the wide scope consistent with principles disclosed herein and feature.
Claims (10)
1. a kind of limit joint distortion flexible force transmission part it is characterised in that：Including in order to the biography longitudinally through tunnel joint
Power part, and located at described force transferring part both sides in order to be fixed on two sleeves of two lining in the layers, described force transferring part is extremely
Few one end can the relatively free-moving inside being sleeved on described sleeve, described force transferring part is provided with the first locating part, described
The inside of sleeve is provided with to limit the first cooperation locating part of the further tension deformation of joint, spacing by control described first
Part coordinates the distance between locating part with described first, carrys out the scope of control joint stroke.
2. a kind of flexible force transmission part according to claim 1 it is characterised in that：Described first locating part is described for being fixedly arranged on
The protuberance of force transferring part end, described first cooperation locating part is the stop part being installed in described sleeve inner end face, described resistance
Stopper hinders described protuberance away from the motion of described sleeve and then limits the further tension deformation of described flexible joint.
3. a kind of flexible force transmission part according to claim 2 it is characterised in that：Described force transferring part is reinforcing bar, described the
One locating part is the nut being threadedly connected to described reinforcing bar two ends；Described first cooperation locating part is to be fixed on described sleeve inner end
The steel plate in face, the center of described steel plate is provided with the perforate passing through in order to described reinforcing bar, and the external diameter of described perforate is less than described nut
External diameter.
4. a kind of flexible force transmission part according to claim 3 it is characterised in that：Described reinforcing bar and the centre bore of described steel plate
Between gap sealed using soft foam.
5. a kind of flexible force transmission part according to claim 2 it is characterised in that：The section of described protuberance is in strip,
It is connected with the body of rod of described force transmission element in center；Described stop part is provided with described in be available for corresponding with described strip shape
The export department that protuberance passes through, when described protuberance is staggered with described export department, described stop part can hinder described protrusion
Portion is away from the motion of described sleeve；It is longitudinally disposed that described sleeve is configured to described export department.
6. a kind of flexible force transmission part according to claim 2 it is characterised in that：The section of described protuberance is in polygon,
Described stop part is provided with the export department being available for that described protuberance passes through, when described protuberance is staggered with described export department, described
Stop part can hinder described protuberance away from the motion of described sleeve.
7. a kind of flexible force transmission part according to claim 5 or 6 it is characterised in that：Described export department and described power transmission portion
Gap between part is sealed using soft foam.
8. a kind of flexible force transmission part according to claim 7 it is characterised in that：Described force transferring part is power transmission reinforcing bar, institute
Stating sleeve is steel pipe, the reinforcement welding in described steel pipe and described two linings.
9. a kind of tunnel joint design with this force transmission element,
Including the first lining laid successively along tunnel cross-section ecto-entad, waterproof layer, deformation layer and two linings, wherein in Cross-fault leveling
It is provided with flexible joint along tunnel ring, described flexible joint is by described deformation layer and two linings along tunnel longitudinal subdivision at transverse section
For adjacent two parts；Width is provided with the contact surface of described waterproof layer and described deformation layer be more than the in described flexible joint
First waterstop in order to prevent the infiltration into described flexible joint of one face width；
It is provided with described flexible force transmission part arbitrary longitudinally through tunnel joint such as claim 1-8 in described two linings.
10. there is the construction method of the tunnel joint design of this force transmission element, comprise the following steps：
Step 1：First waterstop is fixed on splash guard, performs the foam concrete deformation layer of side；
Step 2：After the completion of two lining steel reinforcement cage colligations, the force transferring part with the first locating part is put in the sleeve of side, really
Protect described sleeve to be fixedly connected with the first cooperation locating part, and described sleeve is fixed on two lining steel reinforcement cages；
Step 3：Erect two lining templates and the stopper template of the corresponding side of movement joint, after template erects, pour two linings；
Step 4：Remove two lining templates and the described stopper template of side, set up stopper template and the movement joint of movement joint opposite side
Inner wall form, after-pouring movement joint；
Step 5：Form removal, performs the foam concrete deformation layer of opposite side；
Step 6：Repeat step 2 and step 3, the opposite side sleeve of fixing force transfer part, perform two linings of opposite side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611022074.0A CN106382124A (en) | 2016-11-16 | 2016-11-16 | Flexible force transferring member as well as tunnel joint structure with force transferring member and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611022074.0A CN106382124A (en) | 2016-11-16 | 2016-11-16 | Flexible force transferring member as well as tunnel joint structure with force transferring member and construction method thereof |
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| CN106382124A true CN106382124A (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611022074.0A Pending CN106382124A (en) | 2016-11-16 | 2016-11-16 | Flexible force transferring member as well as tunnel joint structure with force transferring member and construction method thereof |
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| CN (1) | CN106382124A (en) |
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| CN108119161A (en) * | 2017-12-15 | 2018-06-05 | 西南交通大学 | Structure is just built in the prefabricated flexible joint structure of across active breaking belt tunnel-liner and tunnel |
| CN109595005A (en) * | 2018-11-20 | 2019-04-09 | 山东万广建设工程有限公司 | The leading type no-dig technique tunnel construction structure of shell and construction method |
| CN110645013A (en) * | 2019-11-12 | 2020-01-03 | 哈尔滨工业大学 | Tunnel shock-absorbing structure capable of being quickly repaired after earthquake |
| CN110777849A (en) * | 2019-11-29 | 2020-02-11 | 浙江交工集团股份有限公司 | Underground pipe gallery assembly structure and construction method thereof |
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| CN110645013A (en) * | 2019-11-12 | 2020-01-03 | 哈尔滨工业大学 | Tunnel shock-absorbing structure capable of being quickly repaired after earthquake |
| CN110777849A (en) * | 2019-11-29 | 2020-02-11 | 浙江交工集团股份有限公司 | Underground pipe gallery assembly structure and construction method thereof |
| CN115653003A (en) * | 2022-12-28 | 2023-01-31 | 中交第一航务工程局有限公司 | Backstop system of jacking segment and jacking type final joint construction method |
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Application publication date: 20170208 |