CN108468556A - A kind of variable section is by multiple formwork-support - Google Patents
A kind of variable section is by multiple formwork-support Download PDFInfo
- Publication number
- CN108468556A CN108468556A CN201810530401.6A CN201810530401A CN108468556A CN 108468556 A CN108468556 A CN 108468556A CN 201810530401 A CN201810530401 A CN 201810530401A CN 108468556 A CN108468556 A CN 108468556A
- Authority
- CN
- China
- Prior art keywords
- bar
- support
- bridging
- upright bar
- variable section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000010408 sweeping Methods 0.000 claims abstract description 13
- 230000007480 spreading Effects 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 238000003032 molecular docking Methods 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009416 shuttering Methods 0.000 description 1
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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
Abstract
The invention discloses a kind of variable sections by multiple formwork-support, including upright bar；Horizon bar, including common horizon bar and bar of sweeping the floor, and horizontal rod and longitudinal horizontal rod can be divided into；Bridging；Steel arch-shelf；Template.It sets up to form basic frame body unit with the sequence of first upright bar, rear horizon bar, then brace, and should with basic frame body unit by row, successively extension set up integral supporting rack system, the reinforcing members such as hound, bridging should be synchronized with frame body and be set up.It constitutes the steel pipe and component of support construction, different quantity and scale can be selected to set up as the section suitable for various sizes according to the different sizes of different section.Its structure and design can carry out the adjusting of simple and flexible, to adapt to the differently contoured section and construction requirement in different civil defence engineering tunnels, to solve the complexity problem of civil defence engineering form concrete construction.
Description
Technical field
The present invention relates to civil defence engineering technical field of construction more particularly to a kind of variable section by multiple formwork-support.
Background technology
Formwork-support is that cast-in-place concrete construction provides shuttering supporting in the process and provides the knot of construction working platform
Structure.With the fast development of China's infrastructure construction, for the demand to national defence and the utilization of urban underground space,
Civil defence engineering is also in lasting construction.In civil defence engineering construction, civil defence tunnel tunnels that angle, hydraulic character be more, lining types
It is varied, and its journey multi-intersection of being returned to work, big cross section and require support rigidity height.
Currently, mainly constructed using lining trolley by the construction of multiple concrete, when constructing to different section,
Different satisfactory lining trolleys will be used, and the construction characteristic for journey of being returned to work in civil defence engineering is determined using lining
Platform building cart is constructed, will necessarily cause human and material resources, financial resources significant wastage, or even will have a direct impact on the major project duration.
Invention content
The technical problem to be solved in the present invention is to provide a kind of variable sections by multiple formwork-support, structure and design
The adjusting that can carry out simple and flexible, to adapt to the differently contoured section and construction requirement in different civil defence engineering tunnels, to solve the people
The complexity problem of preventing engineering form concrete construction.
In order to solve the above technical problem, the present invention provides a kind of variable sections by multiple formwork-support, including vertical
Bar, horizon bar, bridging and steel arch-shelf；Multiple upright bars and multiple horizon bars, which are connected, constitutes one and construction section configuration phase one
The lower part of the braced frame of cause, the braced frame is supported equipped with bridging, and the upper part of braced frame uses diagonal brace
Bar is supported, and is supported to template as template fetalism equipped with steel arch-shelf at the top of braced frame.
Further, pedestal or backing plate are set in the bottom of the upright bar, and bar of vertically and horizontally sweeping the floor is set, longitudinally sweep
The thin end of the scroll is fixed on using right angle in the upright bar away from pedestal or backing plate upper surface no more than 200mm, and the transverse direction is swept the floor bar right angle
It is fixed in the upright bar abutted against below longitudinal bar of sweeping the floor.
Further, when upright bar selection docking spreading, the sleeve couple of upright bar answers interlaced arrangement, and adjacent two is vertical
In knock-off joint should not be arranged in and synchronize, synchronize in be separated by distance that connector is staggered in short transverse every two of a upright bar not
The distance of preferably less than 500mm, each connector center to host node are not preferably greater than the 1/3 of step pitch.
Further, when upright bar is using overlap joint spreading, the lap of splice is no less than 1m, and should use not less than 2 rotations
Turn fastener to fix；The edge of closing panel to rod end distance is no less than 100mm.
Further, the horizon bar includes longitudinal horizontal rod and horizontal rod；
The longitudinal horizontal rod, be arranged on the inside of upright bar, single pole length be no less than 3 across.Longitudinal horizontal rod spreading is answered
Using docking connection or overlap joint connection；The connector of two adjacent longitudinal horizontal rods should not be arranged in difference or with across interior；It is asynchronous
Or the different distances being staggered in the horizontal direction across two adjacent connectors are no less than 500mm, each connector center to nearest host node
Distance should not exceed the 1/3 of advance.The lap of splice is no less than 1m, answers 3 rotations of spaced set to fix, closing panel
The distance of edge to overlap joint longitudinal horizontal rod rod end is no less than 100mm.
Horizontal rod spaced set preferably as needed, maximum spacing should not exceed the 1/2 of advance；Host node
Place must be provided with a horizontal rod, with right angle snapping and forbid to remove.
Further, the bridging, frame body outer periphery and inside longitudinally, laterally every 5 across (and be no less than
3m), should be should be by the continuous vertical bridging of bottom to top setting, bridging width 5 across.The intersection point plane at the top of vertical bridging
And bar setting face of sweeping the floor should be arranged horizontal cross brace, horizontal cross brace to frame body baseplane distance with horizontal cross tie distance not
Preferably more than 6m, bridging width should be 3~5m.Vertical bridging brace should be 45 °~60 ° with ground elevation, horizontal cross brace
(cross), which is indulged, with holder should be 45 °~60 ° to angle.
The steel arch-shelf selects I-steel as template fetalism, using forming mill clod wash, is placed in the vertical of adjustable support
On bar.
The template is selected thick bamboo slab rubber, is placed on longitudinal lumps of wood on steel arch-shelf.
Heretofore described formwork-support should be set up to form basic frame with first upright bar, rear horizon bar, then the sequence of brace
Body unit, and should with basic frame body unit by row, successively extension set up integral supporting rack system, hound, bridging etc. add
Firmware should be synchronized with frame body and be set up, and must not lag installation.
Beneficial effects of the present invention are as follows：
Technical scheme of the present invention has the following advantages：Variable section of the present invention by multiple formwork-support constitute upright bar and
The steel pipe of horizon bar can carry out particular design combination according to different size sections, to can guarantee that the formwork-support can be applicable in
Subway, people's air defense tunnel in various differently contoured sections, design erection scheme is flexible, is applicable to different sizes, different shape
Section.
The configuration of the present invention is simple, reasonable design, set up that speed is fast, simple installation, and stability is high, and good integrity can be to mould
Plate carries out secure support, can meet in engineering by the construction requirement of multiple concrete, ensure that construction quality, construction effect are good.
And most of component of formwork-support can be mutually used in turn between different section form, be saved
Material further reduces the cost.
In conclusion the configuration of the present invention is simple, reasonable design and easy to use, reliable using process safety, can have
Effect solves the mismatch problem with compound section present in traditional trolley work progress.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, the application's
Illustrative embodiments and their description do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the schematic elevation view of 1a-a sections of the embodiment of the present invention.
Fig. 2 is that the right side of 1a-a sections of the embodiment of the present invention regards schematic diagram.
Fig. 3 is the schematic top plan view of 1a-a sections of the embodiment of the present invention.
Fig. 4 is the schematic elevation view of 2b-b sections of the embodiment of the present invention.
Fig. 5 is that the right side of 2b-b sections of the embodiment of the present invention regards schematic diagram.
In Fig. 1-5,1 is upright bar, and 2 be horizontal rod, and 2-1 is bar of laterally sweeping the floor, and 3 be that vertical equity is dry, and 3-1 is vertical
To bar of sweeping the floor, 4 be bridging, and 5 be longitudinal lumps of wood, and 6 be steel arch-shelf, and 7 be template, and 8 be diagonal brace.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless
Otherwise indicated, all technical and scientific terms used herein has and the application person of an ordinary skill in the technical field
Normally understood identical meanings.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular shape
Formula is also intended to include plural form, additionally, it should be understood that, when in the present specification use term "comprising" and/or
When " comprising ", existing characteristics, step, operation, device, component and/or combination thereof are indicated；
In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words, only expression and attached drawing itself in the present invention
Upper and lower, left and right direction it is consistent, not to structure rise restriction effect, it is only for convenient for description the present invention and simplification retouch
It states, does not indicate or imply the indicated equipment or element must have a particular orientation, with specific azimuth configuration and behaviour
Make, therefore is not considered as limiting the invention.
Term explains part:The terms such as term " installation ", " connected ", " connection ", " fixation " in the present invention should do broad sense
Understand, for example, it may be being fixedly connected, may be a detachable connection, or be integrated；It can be mechanical connection, can be straight
It connects in succession, can also be can be the phase of connection or two elements inside two elements indirectly connected through an intermediary
Interaction relationship can understand above-mentioned term in the present invention as the case may be for the ordinary skill in the art
Concrete meaning.
Heretofore described bridging refers to two supporting rods of right-angled intersection in figure, due between two supporting rods
The structure of a scissor-shaped is formed, therefore becomes bridging；The diagonal brace is exactly a common skewed horizontal load.
In a kind of typical embodiment of the application, formwork-support is designer in certain civil defence in following embodiments
The variable section of certain two section design is by multiple formwork-support in the entrance in engineering tunnel, respectively two listed by applicable and table 1
Section (a-a sections and b-b sections) by multiple concrete construction.
1 a-a sections of table and b-b sections are by multiple construction parameter table
Embodiment 1
The present embodiment be suitable for table 1 a-a sections by the a-a section template supporting racks of multiple concrete construction.
Its cross-section structure is as shown in Figure 1, main member includes upright bar 1, and horizontal rod 2, laterally sweep the floor bar 2-1, indulges
To horizon bar 3, longitudinally sweep the floor bar 3-1, bridging 4, longitudinal lumps of wood 5, steel arch-shelf 6, template 7, diagonal brace 8.Its main construction step
Suddenly it is：
Unwrapping wire is carried out after carrying out the preparation set up, upright bar and horizon bar are all made of Q235 formula steel pipes, specification φ
48*3.5, upright bar spacing are 60cm, across span are 35cm by abutment wall first, according to positions discharge pedestal, place longitudinal sweeps the floor
Bar, bar of longitudinally sweeping the floor are fixed on using right angle away from pedestal epithelium 200mm；Then upright bar is established by root, immediately with right angle button
Part is buckled with longitudinal bar of sweeping the floor, and the lateral bar of sweeping the floor of installation is used in combination right angle to fix and is buckled with upright bar；Install longitudinal horizontal rod (with it is each
Upright bar buckles), step pitch 60cm, first step step pitch is 50cm, installs first step horizontal rod, then installs second and third step
Longitudinal horizontal rod, second and third step horizontal rod, is arranged wall connecting rod, installs the 4th step longitudinal horizontal rod and horizontal rod,
Then upright bar is connect, upright bar is 1m using overlap joint spreading, overlap joint degree, is then further continued for carrying out the installation of horizon bar, until abutment wall
Final step step pitch in top is 40cm, sets up 6 steps altogether, and then 15 across then adding bridging, bridging is in frame body bottom
Top, former and later two facades are respectively provided at two, and often place reinforces 7 across, about 4m, while edge-on close to two of abutment wall in frame body
Bridging at face face setting one；Top frame body is set up, uses adjustable support to adjust upright bar height at the top of upright bar, horizontal steel is installed
Pipe, steel arch-shelf are selected I10 I-steel, are placed on horizontal steel tube；At diagonal brace symmetrically is arranged in top frame body, upper shelf is reinforced
Body；Longitudinal lumps of wood of 100mm × 100mm is placed on steel arch-shelf, spacing 30cm sets up template thereon, and template is thick using 15mm
Bamboo slab rubber.
Embodiment 2
The present embodiment be suitable for table 1 b-b sections by the b-b section template supporting racks of multiple concrete construction
It is much the same with a-a sections that frame body specifically sets up step and sequence of construction, but because section configuration and size, applies
Work requires to change, and specifically has several places to change, predominantly：Increase because left side vault coagulates thickness by compound, therefore left side upright bar carries out
Encryption, spacing 30cm；Because cross section span reduces, two facade bridging quantity become 1 before and after bottom dome, top
Frame body diagonal brace is arranged in left side by the big place of multiple concrete thickness.
Embodiment of above is merely to illustrate the present invention rather than limitation of the present invention.Although with reference to embodiment to this hair
It is bright to be described in detail, it should be appreciated by those skilled in the art that technical scheme of the present invention carry out it is various combination,
Modification or equivalent replacement should all cover and work as in scope of the presently claimed invention without departure from the spirit and scope of the present invention
In.
Claims (10)
1. a kind of variable section is by multiple formwork-support, which is characterized in that including upright bar, horizon bar, bridging and steel arch-shelf；It is more
A upright bar is attached the vertical supporting to form section；Multiple horizon bars connect the cross-brace to form section, cross-brace and
Vertical one braced frame consistent with construction section configuration of composition that is connected, the lower part of the braced frame are equipped with bridging
It is supported, the upper part of braced frame is supported using hound, and steel arch-shelf is equipped with as mould at the top of braced frame
Plate fetalism is supported template.
2. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that set in the bottom of the upright bar
Bottom set seat or backing plate, and vertical, horizontal is arranged and sweeps the floor bar, bar of longitudinally sweeping the floor are fixed on using right angle away from pedestal or backing plate upper surface
In upright bar, transverse direction bar of sweeping the floor is fixed on right angle in the upright bar abutted against below longitudinal bar of sweeping the floor.
3. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that when the upright bar selects docking
When spreading, the sleeve couple of upright bar answers interlaced arrangement, adjacent two upright bars connector should not be arranged in synchronize in, synchronize in it is vertical every one
Two of bar are separated by the distance that connector is staggered in short transverse and are not preferably less than 500mm, and the distance of each connector center to host node is not
Preferably greater than the 1/3 of step pitch.
4. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that when the upright bar is using overlap joint
When spreading, the lap of splice is no less than 1m, and should use and be fixed not less than 2 rotary buckles；The edge of closing panel is to rod end
Distance no less than 100mm.
5. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that the horizon bar includes longitudinal
Horizon bar and horizontal rod；The longitudinal horizontal rod is arranged on the inside of upright bar；Between the horizontal rod preferably waits as needed
Away from setting；It must be provided with a horizontal rod at supporting rack host node, with right angle snapping and forbid to remove.
6. variable section as claimed in claim 5 is by multiple formwork-support, which is characterized in that the longitudinal horizontal rod spreading
Docking connection or overlap joint connection should be used；The connector of two adjacent longitudinal horizontal rods should not be arranged in difference or with across interior.
7. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that the bridging includes vertically cutting
Knife supports and lateral bridging；Supporting rack outer periphery and inside longitudinally, laterally every 5 across and no less than 3m, should by bottom to push up
The continuous vertical bridging of setting；Horizontal cross brace, water should be arranged in intersection point plane and bar setting face of sweeping the floor at the top of vertical bridging
Flat bridging to frame body baseplane distance with horizontal cross tie distance no more than 6m, bridging width should be 3~5m.
8. variable section as claimed in claim 7 is by multiple formwork-support, which is characterized in that the vertical bridging brace
45 °~60 ° are should be with ground elevation, horizontal cross brace indulges (cross) with holder and should be 45 °~60 ° to angle.
9. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that the steel arch-shelf selects I-shaped
Steel is placed in using forming mill clod wash in the upright bar of adjustable support.
10. variable section as described in claim 1 is by multiple formwork-support, which is characterized in that the template selects thick bamboo glue
Plate is placed on longitudinal lumps of wood on steel arch-shelf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810530401.6A CN108468556A (en) | 2018-05-29 | 2018-05-29 | A kind of variable section is by multiple formwork-support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810530401.6A CN108468556A (en) | 2018-05-29 | 2018-05-29 | A kind of variable section is by multiple formwork-support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108468556A true CN108468556A (en) | 2018-08-31 |
Family
ID=63261699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810530401.6A Pending CN108468556A (en) | 2018-05-29 | 2018-05-29 | A kind of variable section is by multiple formwork-support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108468556A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538242A (en) * | 2018-10-23 | 2019-03-29 | 中建局集团第建筑有限公司 | A kind of building method of constructing tunnel falsework |
| CN114396295A (en) * | 2021-11-01 | 2022-04-26 | 中铁二局集团有限公司 | Secondary lining construction method for lower anchor section of railway tunnel |
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| CN102505708A (en) * | 2011-10-21 | 2012-06-20 | 中冶建工集团有限公司 | Construction method of tunnel at oversized cross section open cut area in track traffic |
| CN203669884U (en) * | 2014-01-15 | 2014-06-25 | 中国水利水电第五工程局有限公司 | Movable all-round steel pipe scaffold for tunnel lining construction |
| CN105421490A (en) * | 2015-12-25 | 2016-03-23 | 北京市政建设集团有限责任公司 | Structure formwork support system free from support replacement and construction method thereof |
| JP2017096069A (en) * | 2015-11-27 | 2017-06-01 | 鹿島建設株式会社 | Tunnel lining concrete construction method and tunnel lining concrete construction structure |
| CN107090971A (en) * | 2017-06-14 | 2017-08-25 | 中国五冶集团有限公司 | A kind of method and apparatus for quick and precisely installing flue arch top template |
| CN208380594U (en) * | 2018-05-29 | 2019-01-15 | 中铁十四局集团第二工程有限公司 | A kind of variable section is by multiple formwork-support |
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2018
- 2018-05-29 CN CN201810530401.6A patent/CN108468556A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505708A (en) * | 2011-10-21 | 2012-06-20 | 中冶建工集团有限公司 | Construction method of tunnel at oversized cross section open cut area in track traffic |
| CN203669884U (en) * | 2014-01-15 | 2014-06-25 | 中国水利水电第五工程局有限公司 | Movable all-round steel pipe scaffold for tunnel lining construction |
| JP2017096069A (en) * | 2015-11-27 | 2017-06-01 | 鹿島建設株式会社 | Tunnel lining concrete construction method and tunnel lining concrete construction structure |
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| CN208380594U (en) * | 2018-05-29 | 2019-01-15 | 中铁十四局集团第二工程有限公司 | A kind of variable section is by multiple formwork-support |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538242A (en) * | 2018-10-23 | 2019-03-29 | 中建局集团第建筑有限公司 | A kind of building method of constructing tunnel falsework |
| CN109538242B (en) * | 2018-10-23 | 2020-09-29 | 中建一局集团第一建筑有限公司 | Building method of tunnel construction formwork support |
| CN114396295A (en) * | 2021-11-01 | 2022-04-26 | 中铁二局集团有限公司 | Secondary lining construction method for lower anchor section of railway tunnel |
| CN114396295B (en) * | 2021-11-01 | 2023-12-12 | 中铁二局集团有限公司 | Secondary lining construction method for anchor section of railway tunnel |
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Application publication date: 20180831 |