CN207499880U - A kind of assembled inverted arch - Google Patents
A kind of assembled inverted arch Download PDFInfo
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- CN207499880U CN207499880U CN201721247645.0U CN201721247645U CN207499880U CN 207499880 U CN207499880 U CN 207499880U CN 201721247645 U CN201721247645 U CN 201721247645U CN 207499880 U CN207499880 U CN 207499880U
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Abstract
The utility model provides a kind of assembled inverted arch, including at least one section of inverted arch monomer, inverted arch monomer includes first segment, second segment and third section that removable connector detachable connection is sequentially passed through along its width direction, and the junction and second segment of first segment and second segment and the junction of third section are arranged on the position that tunnel cross-section moment of flexure is 0 0.05 times of tunnel cross-section maximal bending moment.Using technical solutions of the utility model, effect is：A, it is more advantageous to structure stress, it is ensured that the stability and service life of inverted arch；B, Construction of Tunnel road structure can be made to close cyclization as early as possible and ensure tunnel structure and construction safety；C, be conducive to standardized construction, improve construction quality；D, constructing tunnel efficiency can be promoted, the constructing tunnel duration is compressed, project cost is greatly reduced；E, cost 10 15% is reduced than in-site pouring concrete.
Description
Technical field
The utility model is related to vcehicular tunnel technical fields, particularly, are related to a kind of assembled inverted arch and preparation method thereof.
Background technology
It is always to fail a great problem solved very well in state's inner tunnel mining method construction greatly that inverted arch, which is applied to driving interference,.
In order to improve tunnel structure durability, improvement structural stress state solves the diseases such as Tunnel Water Leakage,《Railway tunnel construction is advised
Model》(TB10204-2002) it provides：" inverted arch apply preferentially select each section it is once-forming, avoid substep be perfused ".Inverted arch is advanced, one
Secondary property full width construction has become the basic demand of constructing tunnel, and traditional half range inverted arch construction method is gradually prohibited, especially
It is soft rock large deformation or other geological disaster locations for bottom plate to be, the construction of inverted arch full width seems extremely important, this also will
As a trend of railway tunnel construction from now on.
And existing prefabricated pipe section structure is generally used for TBM shield tunnels, and use prefabricated pipe section in Tunneling by mining method construction
Structure there is not yet reporting for work.It is improved with reference to the technique of design and construction of duct pieces of shield tunnel, and with reference to vcehicular tunnel feature
And optimization, assembled inverted arch component is made to apply to very well in vcehicular tunnel construction.
In the Scheme Choice that shield tunnel is divided in section of jurisdiction, the stress of structure, the making of section of jurisdiction and transport are mainly considered
The factors such as installation.Method for prefabricating and construction for inverted arch, many scholars had done numerous studies, but were concentrated mainly on TBM
In shield tunnel, but these methods are not suitable for the tunnel of mining method construction.
Therefore, a kind of structure is designed to simplify, convenient for making, greatly shorten construction period, the spies such as project cost are greatly reduced
Assembled inverted arch of point and preparation method thereof is of great significance.
Utility model content
It is simplified the purpose of this utility model is to provide a kind of structure, convenient for making, standardize, Construction of Tunnel can be made
Road structure closes the assembled inverted arch that cyclization ensures tunnel structure and construction safety as early as possible, and concrete structure is：
A kind of assembled inverted arch, the inverted arch monomer including one section of inverted arch monomer or at least two sections removable connections are described
Inverted arch monomer includes sequentially passing through the first segment of removable connector detachable connection, second segment and the along its width direction
Three sections；
The first segment is identical with the structure of the third section；
The junction and the second segment of the first segment and the second segment and the junction setting of the third section
In the position that tunnel cross-section moment of flexure is 0-0.05 times of tunnel cross-section maximal bending moment.
It is preferred in above technical scheme, the equal 400-800mm of thickness of the first segment, second segment and third section；
The longitudinal length of the inverted arch monomer is 3-12 meters.
Preferred in above technical scheme, the first segment, second segment and third section are equipped with steel reinforcement cage, the reinforcing bar
Cage includes multilayer transverse steel, multilayer longitudinal reinforcement and Duo Gen vertical stirrups；
In spacing and same layer in same layer between adjacent two transverse steels between adjacent two longitudinal reinforcements
Spacing is 200-250mm, perpendicular between the vertical distance and bilevel longitudinal reinforcement between upper and lower two layers of transverse steel
Straight distance is 300-450mm；It is mixed not less than 40mm that thickness is equipped on the outside of the transverse steel and the longitudinal reinforcement
Solidifying protective soil layer；The normal direction setting of vertical stirrup transversely reinforcing bar, and vertical stirrup and transverse steel and longitudinal reinforcement
Junction is attached；Same root vertical stirrup is at least connect with upper and lower two layers of transverse steel.
It is preferred in above technical scheme, further include more overhanging welding steel muscle, the first segment and the third section
In one end connect with abutment wall be equipped with the more overhanging welding steel muscle.
It is preferred in above technical scheme, between the first segment and the second segment, the second segment and the third
The removable connector is equipped between section and between two adjacent groups inverted arch monomer.
Preferred in above technical scheme, the second segment is equipped with ten connectors, the first segment and the third
There are four connectors by Duan Junshe；The connector is equipped with connecting hole；
The second segment is evenly distributed with three connectors respectively along the both ends of inverted arch length direction, along the both ends of inverted arch width direction
It is evenly distributed with two connectors respectively；The first segment is evenly distributed with a connector respectively along the both ends of inverted arch length direction, wide along inverted arch
Degree direction and one end for being connected with the second segment set that there are two connectors；Both ends of the third section along inverted arch length direction
It is evenly distributed with a connector respectively, sets that there are two connectors along inverted arch width direction and one end for being connected with the second segment.
Preferred in above technical scheme, the removable connector includes the combination of bolt or screw bolt and nut.
Preferred in above technical scheme, the center of first segment, second segment and third section is equipped with injected hole.
Using the assembled inverted arch of the utility model, effect is as follows：
1st, the assembled inverted arch of the utility model includes one section of inverted arch monomer or the inverted arch of at least two sections removable connections
Monomer, the inverted arch monomer include along its width direction sequentially pass through removable connector detachable connection first segment, the
Two sections and third section.The utility model realizes the prefabricated of tunnel inverted arch, and effect is：Construction of Tunnel road structure can a, use up
Early closing cyclization ensures tunnel structure and construction safety；B, be conducive to standardized construction, improve construction quality；C, tunnel can be promoted
Road construction efficiency compresses the constructing tunnel duration, project cost is greatly reduced；D, because not needing to setting and form removal, than existing
Field concrete perfusion reduces cost 10-15%；First segment is identical with the structure of the third section, therefore, is only wrapped in inverted arch monomer
It is easy to make containing two class inverted arch sections；The junction and the second segment of first segment and the second segment and the third section
Junction is arranged on the position of tunnel cross-section moment of flexure smaller (being preferably provided at moment of flexure herein as 0kNm), is more advantageous to structure
Stress, it is ensured that the stability and service life of inverted arch.
2nd, the equal 400-800mm of the thickness of first segment described in the utility model, second segment and third section, the inverted arch list
The longitudinal length of body is 3-12 meters, meets the primary demand of real constructing tunnel.
3rd, first segment, second segment and third section are equipped with steel reinforcement cage in the utility model, and it is lateral that steel reinforcement cage includes multilayer
Reinforcing bar, multilayer longitudinal reinforcement and Duo Gen vertical stirrups, the concrete configuration of transverse steel, longitudinal reinforcement and vertical stirrup meet V
The grade country rocks such as country rock are poor or the demand of structural stability and sectional reinforcement requirement in the case that tunnel cross-section is larger.
4th, more overhanging welding steel muscle, the first segment and the third Duan Zhongyu abutment walls are further included in the utility model
Connection one end is equipped with the more overhanging welding steel muscle, convenient for the connection between assembled inverted arch and abutment wall.
5th, between first segment described in the utility model and the second segment, between the second segment and the third section with
And connected between two adjacent groups inverted arch monomer using removable connector, convenient for assembling.Removable connector include bolt or
The combination of screw bolt and nut, component are easy to get, and can meet connection requirement.
6th, second segment described in the utility model is equipped with ten connectors, and the first segment and the third section are equipped with
Four connectors, the connector are equipped with connecting hole, the specific arrangement of connector, between meeting each section and adjacent inverted arch list
Connection between body meets the structural stability demand of inverted arch；The center of the first segment, second segment and third section is equal
Equipped with injected hole, convenient for grouting operation.
Other than objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to accompanying drawings, the utility model is described in further detail.
Description of the drawings
The attached drawing for forming the part of the application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description do not form the improper restriction to the utility model for explaining the utility model.In attached drawing
In：
Fig. 1 is structure diagram when assembled inverted arch in embodiment 1 (being assembled comprising two sections of inverted arch monomers) uses；
Fig. 2 is the inverted arch section structure diagram of Fig. 1 (injected hole on first segment and third section is not shown)；
Fig. 3 is the structure diagram of first segment in Fig. 1；
Fig. 4 is the structure diagram of second segment in Fig. 1；
Fig. 5 is the structure diagram of third section in Fig. 1；
1st, inverted arch monomer, 1.1, first segment, 1.2, second segment, 1.3, third section, 1.4, steel reinforcement cage, 1.41, transverse steel,
1.42nd, longitudinal reinforcement, 1.43, vertical stirrup, 1.44, overhanging welding steel muscle, 1.5, connector, 1.51, connecting hole, 1.6, note
Starch hole, 2, removable connector, 2.1, bolt, 3, abutment wall.
Specific embodiment
The embodiment of the utility model is described in detail below in conjunction with attached drawing, but the utility model can be according to power
Profit requirement limits and the multitude of different ways of covering is implemented.
Embodiment 1：
A kind of assembled inverted arch, refers to Fig. 1-Fig. 5, includes the inverted arch monomer 1 of two sections of removable connections, the inverted arch monomer
First segment 1.1, second segment 1.2 and including sequentially passing through 2 detachable connection of removable connector along its width direction
Three section 1.3, the detachable connecting part 2 includes bolt 2.1, between the first segment 1.1 and the second segment 1.2, described
Pass through the removable connector 2 between second segment 1.2 and the third section 1.3 and between two adjacent groups inverted arch monomer 1
Connection.
The first segment 1.1 is identical with the structure of the third section 1.3, can be incorporated into a kind of progress batch making.
The junction and the second segment 1.2 of the first segment 1.1 and the second segment 1.2 and the third section 1.3
Junction moment of flexure be zero position, the unit of moment of flexure is kNm herein, can also be according to practice of construction situation by junction
It is arranged on the position within 0.05 times of tunnel cross-section maximal bending moment.
The equal 400-800mm of thickness of the first segment 1.1, second segment 1.2 and third section 1.3.
The longitudinal length of the inverted arch monomer is 3-12 meters.
The first segment 1.1, second segment 1.2 and third section 1.3 are equipped with steel reinforcement cage 1.4, and the steel reinforcement cage includes more
Layer transverse steel 1.41, multilayer longitudinal reinforcement 1.42 and Duo Gen vertical stirrups 1.43, details are：
Adjacent two longitudinal reinforcements in spacing and same layer in same layer between adjacent two transverse steels 1.41
Spacing between 1.42 is 200-250mm, vertical distance between upper and lower two layers of transverse steel 1.41 and bilevel vertical
Vertical distance between reinforcing bar 1.42 is 300-450mm；Vertical stirrup 1.43 transversely reinforcing bar normal direction setting, and
Vertical stirrup 1.43 is attached (i.e. lateral steel using the junction of 8mm stirrups and transverse steel 1.41 and longitudinal reinforcement 1.42
Muscle, longitudinal reinforcement and vertical stirrup three are connected in same tie point)；Same root vertical stirrup 1.43 at least with upper and lower two layers
Transverse steel 1.41 connects, and the concrete that thickness is not less than 40mm is equipped on the outside of the transverse steel and the longitudinal reinforcement
Protective layer.
More overhanging welding steel muscle 1.44 are further included, are connect in the first segment 1.1 and the third section 1.3 with abutment wall
One end is equipped with the more overhanging welding steel muscle 1.44.
The second segment 1.2 is equipped with ten connectors 1.5, and specific arrangement refers to Fig. 4, and second segment 1.2 is along inverted arch length
The both ends in direction are evenly distributed with three connectors 1.5 respectively, and two connectors 1.5 are evenly distributed with respectively along the both ends of inverted arch width direction.
The first segment 1.1 and the third section 1.3 are all provided with there are four connector 1.5, refer to Fig. 3 and Fig. 5, and described first
Section 1.1 along the both ends of inverted arch length direction respectively be evenly distributed with a connector 1.5, along inverted arch width direction and with the second segment
1.2 one end being connected are set there are two connector 1.5；The third section 1.3 is evenly distributed with one respectively along the both ends of inverted arch length direction
A connector 1.5, sets that there are two connectors 1.5 along inverted arch width direction and one end for being connected with the second segment 1.2.It is described
Connector 1.5 is equipped with connecting hole 1.51.The center of the first segment 1.1, second segment 1.2 and third section 1.3 is equipped with
Injected hole 1.6.
The production method of above-mentioned assembled inverted arch, includes the following steps：
1st, preparation process, specifically：Mold is cleared up, details are：Mold cleaning on inspection after, it is de- to being brushed in mold
Mould agent.It is recommended that the brushing of ingot stripper uses flusher, releasing agent will be brushed comprehensively thoroughly, and be carried out after mold clamping, with
Exempt to cause to waste.After spraying, it is with clean rag or mop that releasing agent is applied, it must not there are hydrops at groove.
2nd, it binds and lifts steel reinforcement cage, specifically：More transverse steels, more longitudinal reinforcements and Duo Gen vertical stirrups are pressed
It is bound according to the specification of inverted arch into steel reinforcement cage；It and will be in reinforcing bar cage hoisting to mold.
The 3rd, built-in fitting is installed, specifically：Plug, Grouting Pipe and bolt sleeve are installed to accurate location, details are：By core
Stick, Grouting Pipe, bolt sleeve are installed to correct position in favor of form concrete reserving hole channel.Wherein the installation of plug must fasten
On earth；And Grouting Pipe must confirm that Grouting Pipe pedestal could install Grouting Pipe after lossless in a pre-installation；Terminate in installation of embedded parts
Afterwards, after checking one by one, next procedure can be carried out.
4th, molding and casting concrete, specifically：Die cover plate is closed；It is mixed what concrete material obtained after mixing and stirring
It is delivered in the mold for being placed with steel reinforcement cage with material, after steel reinforcement cage is placed, check protection layer stent whether intact, corrected in time
Supplement；It to check whether steel reinforcement cage surrounding protective layer thickness is uniform simultaneously, adjust in time.Can be shaken during casting concrete with
The bubble of intrados in elimination first segment 1.1, second segment 1.2 and third section 1.3.
5th, it also needs to carry out the maintenance of receipts face after component completes, specifically：After coming out from vibration room, slightly receive together,
The flat bar that a root long degree is more than die width can be selected to be drawn, to ensure the radian of inverted arch building block extrados.It should be reasonable
The time in secondary receipts face is grasped, troweling is carried out when i.e. by initial set.To avoid causing difficulty, extrados to vacuum disc suction machine playing piece
Receivable floating is suitable.Finally building block is sucked out from mold using vacuum disc suction machine.Plastic covering film after receipts face, in order to avoid
The dehydration of building block surface is too fast.And after building block initial set, before steam-cured room is entered, pre-buried plug is extracted, the time is grasped
It is reasonable, avoid occurring collapse hole too early.Then in a natural environment place 1.5~2h, for improve building block early strength, then
It is steam-cured into steam-cured room.
6th, the splicing of building block, specifically：First splice an inverted arch monomer, then sequentially splice adjacent inverted arch monomer, i.e.,
Complete the making of assembling inverted arch.
7th, the splicing of inverted arch monomer is：First position the position for placing second segment 1.2 according to tunnel central axes, then by the
One section 1.1 and third section 1.3 are positioned according to the position of second segment 1.2；By removable connector 2 by 1.1 He of first segment
Second segment 1.2 and second segment 1.2 and third section 1.3 are fixed；All bolts are fastened with pneumatic impact wrench.
During splicing, the company of first segment and second segment in the junction and same inverted arch monomer between adjacent inverted arch monomer
The junction for connecing place and second segment and third section is pasted using ethylene-propylene-diene monomer adhesive tape, connects the connection of bolt and connector
Place is sealed using seal washer；The outer surface of assembled inverted arch is additionally provided with waterproof layer.
In overhanging welding steel muscle and abutment wall in assembled inverted arch in first segment between reserved lining reinforcing bar and third
In overhanging welding steel muscle and abutment wall in section two-sided welding, and the lap of splice of two kinds of reinforcing bars are carried out between reserved lining reinforcing bar
30 times for bar diameter.
The concrete poured is not less than 40mm for the net protective layer thickness of stress main reinforcement, and building block thickness cannot be less than
40cm, in two-lane tunnel, it is proposed that in V grade of country rock, each building block thickness is 45cm；In IV grade of country rock, each building block
Thickness is 40cm.In three lanes tunnel, it is proposed that in V grade of country rock, each building block thickness is not less than 55cm；In IV grade of country rock
In, each building block thickness is not less than 45cm.
In the case that the present embodiment illustrates that the country rocks such as V grade of country rock are poor or tunnel cross-section is larger, assembled inverted arch needs
Configuration reinforcement cage.And it is preferable in country rocks situations such as IV grade of country rocks, assembled inverted arch can not be configured steel reinforcement cage or according to
Assembling needs to configure constructivity reinforcing bar.
Using the method for the utility model, effect is：Inverted arch be segmented it is prefabricated after, then assembled, can be met《Iron
Road constructing tunnel specification》(TB10204-2002) it provides：" inverted arch apply preferentially select each section it is once-forming, avoid substep fill
Note "；It is more sharp and to the concrete construction method and its lateral, longitudinally connected providing method each other of sections different in inverted arch monomer
It is made in site operation personnel and building block preparation manufacturer；The utility model method can greatly improve construction efficiency, and fill
The self-bearing ability of country rock has been waved in distribution, effectively prevents scene due to the slow caused a series of problems of inverted arch structure follow-up.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention, such as uses prefabricated components and site concrete phase
With reference to multilayer structure mode etc..Within the spirit and principle of the utility model, any modification for being made, equivalent replacement,
Improve etc., it should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of assembled inverted arch, it is characterised in that：Including one section of inverted arch monomer (1) or at least two sections of removable connections are faced upward
Encircle monomer (1), the inverted arch monomer includes sequentially passing through the of removable connector (2) detachable connection along its width direction
One section (1.1), second segment (1.2) and third section (1.3)；
The first segment (1.1) is identical with the structure of the third section (1.3)；
The junction and the second segment (1.2) of the first segment (1.1) and the second segment (1.2) and the third section
(1.3) junction is arranged on the position that tunnel cross-section moment of flexure is 0-0.05 times of tunnel cross-section maximal bending moment.
2. assembled inverted arch according to claim 1, it is characterised in that：The first segment (1.1), second segment (1.2) with
And the equal 400-800mm of thickness of third section (1.3)；
The longitudinal length of the inverted arch monomer is 3-12 meters.
3. assembled inverted arch according to claim 1, it is characterised in that：The first segment (1.1), second segment (1.2) with
And third section (1.3) is equipped with steel reinforcement cage (1.4), the steel reinforcement cage includes multilayer transverse steel (1.41), multilayer longitudinal reinforcement
(1.42) and more vertical stirrups (1.43)；
Adjacent two longitudinal reinforcements in spacing and same layer in same layer between adjacent two transverse steels (1.41)
(1.42) spacing between is 200-250mm, vertical distance between upper and lower two layers of transverse steel (1.41) and two layers upper and lower
Longitudinal reinforcement (1.42) between vertical distance be 300-450mm；The outside of the transverse steel and the longitudinal reinforcement
It is equipped with the concrete cover that thickness is not less than 40mm；
The normal direction setting of vertical stirrup (1.43) transversely reinforcing bar, vertical stirrup (1.43) and transverse steel (1.41) and is indulged
It is attached to the junction of reinforcing bar (1.42)；Same root vertical stirrup (1.43) at least with upper and lower two layers of transverse steel (1.41)
Connection.
4. assembled inverted arch according to claim 3, it is characterised in that：Further include more overhanging welding steel muscle
(1.44), one end is connect with abutment wall in the first segment (1.1) and the third section (1.3) and is equipped with the more overhanging welding
With reinforcing bar (1.44).
5. assembled inverted arch according to any one of claims 1-4, it is characterised in that：The first segment (1.1) and institute
It states between second segment (1.2), the second segment (1.2) and third section (1.3) product and two adjacent groups inverted arch monomer (1)
Between be equipped with the removable connector (2).
6. assembled inverted arch according to claim 5, it is characterised in that：The second segment (1.2) is equipped with ten connections
Head (1.5), the first segment (1.1) and the third section (1.3) be all provided with there are four connector (1.5)；The connector (1.5)
It is equipped with connecting hole (1.51)；
The second segment (1.2) is evenly distributed with three connectors (1.5) respectively along the both ends of inverted arch length direction, along inverted arch width direction
Both ends respectively be evenly distributed with two connectors (1.5)；
The first segment (1.1) is evenly distributed with a connector (1.5) respectively along the both ends of inverted arch length direction, along inverted arch width direction
And the one end being connected with the second segment (1.2) is set there are two connector (1.5)；
The third section (1.3) is evenly distributed with a connector (1.5) respectively along the both ends of inverted arch length direction, along inverted arch width direction
And the one end being connected with the second segment (1.2) is set there are two connector (1.5).
7. assembled inverted arch according to claim 5, it is characterised in that：The removable connector (2) is including bolt
(2.1) or the combination of screw bolt and nut.
8. assembled inverted arch according to claim 5, it is characterised in that：The first segment (1.1), second segment (1.2) with
And the center of third section (1.3) is equipped with injected hole (1.6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721247645.0U CN207499880U (en) | 2017-09-27 | 2017-09-27 | A kind of assembled inverted arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721247645.0U CN207499880U (en) | 2017-09-27 | 2017-09-27 | A kind of assembled inverted arch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476812A (en) * | 2017-09-27 | 2017-12-15 | 贵州省公路工程集团有限公司 | A kind of assembled inverted arch and preparation method thereof |
| CN110486040A (en) * | 2019-07-08 | 2019-11-22 | 重庆交通大学 | A kind of prefbricated tunnel lining structure for vcehicular tunnel |
| CN111878115A (en) * | 2020-07-17 | 2020-11-03 | 山东交通学院 | Cavity assembly type tunnel inverted arch and construction method |
-
2017
- 2017-09-27 CN CN201721247645.0U patent/CN207499880U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476812A (en) * | 2017-09-27 | 2017-12-15 | 贵州省公路工程集团有限公司 | A kind of assembled inverted arch and preparation method thereof |
| CN110486040A (en) * | 2019-07-08 | 2019-11-22 | 重庆交通大学 | A kind of prefbricated tunnel lining structure for vcehicular tunnel |
| CN110486040B (en) * | 2019-07-08 | 2024-03-08 | 重庆交通大学 | Assembled lining structure for highway tunnel |
| CN111878115A (en) * | 2020-07-17 | 2020-11-03 | 山东交通学院 | Cavity assembly type tunnel inverted arch and construction method |
| CN111878115B (en) * | 2020-07-17 | 2022-06-07 | 山东交通学院 | Cavity assembly type tunnel inverted arch and construction method |
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