CN113137247A - Method for improving concrete pouring efficiency and compactness of tunnel secondary lining arch wall - Google Patents
Method for improving concrete pouring efficiency and compactness of tunnel secondary lining arch wall Download PDFInfo
- Publication number
- CN113137247A CN113137247A CN202110339961.5A CN202110339961A CN113137247A CN 113137247 A CN113137247 A CN 113137247A CN 202110339961 A CN202110339961 A CN 202110339961A CN 113137247 A CN113137247 A CN 113137247A
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- Prior art keywords
- pouring
- mould
- pour
- concrete
- arch wall
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004567 concrete Substances 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000010276 construction Methods 0.000 claims abstract description 11
- 238000005056 compaction Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000010345 tape casting Methods 0.000 claims 1
- 238000007569 slipcasting Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000004513 sizing Methods 0.000 description 4
- 241000357293 Leptobrama muelleri Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a method for improving the concrete pouring efficiency and compactness of a tunnel secondary lining arch wall, which comprises the following steps of utilizing a steel mould trolley as a template during the construction of the arch wall, wherein the steel mould trolley is provided with a plurality of pouring ports and mould-carrying pouring holes, and adopting a small steel mould to plug an end mould; when pouring, insert the tip with the pump line and pour the mouth, open all and pour a mouthful flashboard and pour high performance micro-expansion self-compaction concrete, it need not to switch and pours the mouth to pour the in-process, utilize single mouthful of pouring to push away the concrete crowded distal end and pour and combine area mould slip casting hole, the dense condition judgement is pour to the excessive thick liquid condition of end mould, pour and carry out area mould slip casting immediately after accomplishing, promoted pouring efficiency and two lining arch walls by a wide margin and pour closely knit degree, effectively guaranteed tunnel construction quality.
Description
Technical Field
The invention relates to the technical field of tunnel secondary lining construction, in particular to a method for improving the concrete pouring efficiency and compactness of a tunnel secondary lining arch wall.
Background
In two lining construction fields in the tunnel, more or less all can have the vault to pour the quality general fault that is not closely knit and cavity in the arch wall construction, and pour efficiency extremely low, it has to do its reason: firstly, air at the vault is not discharged, and a cavity is formed to cause that concrete at the vault position is not full; secondly, the reliability of end mold plugging is poor, and the end mold plugging cannot bear large pump pressure, so that proper over-irrigation cannot be realized; thirdly, the vault is hollowed due to the shrinkage phenomenon in the concrete curing process; fourthly, the dense vibrating effect of the second lining steel bar arrangement is not good; fifthly, the pouring opening needs to be replaced frequently, the pump is stopped frequently, a cold joint is easy to form, and the pouring time is prolonged. Therefore, how to improve the concrete pouring compactness and pouring efficiency of the second-lining arch wall is the key for determining the success or failure of the second-lining construction.
Disclosure of Invention
In order to overcome the technical defects in the prior art, the invention provides a method for improving the pouring efficiency and the compactness of the tunnel double-lined arch wall concrete.
The invention realizes the aim through the following technical scheme, and provides a method for improving the concrete pouring efficiency and the compactness of a tunnel secondary lining arch wall.
The steel mould trolley is provided with a plurality of pouring openings and mould-carrying grouting holes, the mould-carrying grouting holes are arranged on two sides of each pouring opening, each pouring opening is provided with a movable gate plate, the steel mould trolley is configured with a small shaping steel mould for end mould plugging, the small shaping steel mould is connected with a steel mould trolley end flange through bolts, bolt holes are all long round holes, an angle steel back edge is arranged to reinforce the small shaping steel mould, the bearing capacity of an end mould is improved, the long round holes in the small shaping steel mould are radial long round holes, the long round holes in the steel mould trolley flange are annular long round holes, high-performance micro-expansion self-compacting concrete is poured into the mould with the slump expansion degree not less than 600mm, and the limited expansion rate is greater than 0.015%.
The annular adjustment can ensure that the small blocks of the sizing steel dies are tightly installed, and the radial adjustment can ensure that the small blocks of the sizing steel dies are tightly attached to the primary support surface.
The method for improving the concrete pouring efficiency and compactness of the tunnel secondary lining arch wall comprises the following construction steps:
s1: installing the injection pipe with the mold in place, and opening all pouring port flashboards;
s2: connecting the pump pipe to the end pouring opening for pouring;
s3: when pouring to the side mold observation window, stopping the pump properly, and starting the flat plate vibrator for vibrating;
s4: and closing the gate plates of the other pouring openings when the slurry overflows, and continuously pouring until all the grouting pipes with the molds and the highest ends of the end molds overflow the slurry, so that pouring can be finished.
According to the method for improving the concrete pouring efficiency and the compactness of the tunnel secondary lining arch wall, the single-opening pouring is carried out only by using end pouring in the whole pouring process, and a pouring opening is not replaced.
According to the method for improving the concrete pouring efficiency and compactness of the tunnel secondary lining arch wall, the mould-carrying grouting is carried out immediately after the pouring is finished
Generally, compared with the prior art, the technical scheme of the invention can achieve the following beneficial effects: according to the method for improving the pouring efficiency and the compactness of the concrete of the tunnel secondary lining arch wall, frequent switching of pouring ports is not needed in the pouring process of the arch wall, the pouring efficiency and the pouring compactness of the secondary lining arch wall are greatly improved, and the construction quality of the tunnel is effectively guaranteed.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is a layout view of a steel form trolley pouring opening and a molded grouting hole according to the present invention;
FIG. 2 is a schematic structural view of a small block sizing steel die used for end die plugging of the present invention;
in the figure: 1-pouring opening, 2-pouring hole with mold, 3-observation window, 4-small shaping steel mold, 5-angle steel and 6-long round hole.
Detailed Description
The invention relates to a method for improving the concrete pouring efficiency and compactness of a tunnel secondary lining arch wall.
The steel mould trolley is provided with a plurality of pouring ports 1 and mould-carrying grouting holes 2, the arrangement of the pouring ports 1 and the mould-carrying grouting holes 2 on the steel mould trolley is as shown in figure 1, the mould-carrying grouting holes 2 are arranged on two sides of the pouring ports 1, the pouring ports 1 are provided with movable gate plates, and the side end face of the steel mould trolley is provided with a small block sizing steel mould 4 for end mould plugging.
The small block shaping steel die 4 adopted by end die plugging is shown in fig. 2, the small block shaping steel die 4 is in bolted connection with a steel die trolley end flange, bolt holes are all long round holes 6, an angle steel 5 back edge is arranged to reinforce the small block shaping steel die 4, the long round holes 6 in the small block shaping steel die 4 are radial long round holes, the long round holes 6 in the steel die trolley flange are circumferential long round holes, the high-performance micro-expansion self-compaction concrete in-die slump expansion degree is not less than 600mm, and the expansion limiting rate is greater than 0.015%.
The pouring method comprises the following construction steps:
the method comprises the following steps: installing the injection pipe with the mold in place, and opening the flashboards of all the pouring openings 1;
step two: connecting a pump pipe to the end pouring opening 1 for pouring;
step three: when pouring to the side mold observation window, stopping the pump properly, and starting the flat plate vibrator for vibrating;
step four: and closing the gate plates of the other pouring openings 1 when the slurry overflows, and continuously pouring until all the grouting pipes with the molds and the highest ends of the end molds overflow the slurry, thus finishing pouring.
In the whole pouring process, single-port pouring is carried out only by using the end pouring port 1, the pouring port is not replaced, and the pouring with the mold is immediately carried out after the concrete pouring is finished.
The method has simple process, does not need to frequently switch pouring ports in the pouring process of the arch wall, greatly improves the pouring efficiency and the pouring compactness of the secondary lining arch wall, and effectively ensures the tunnel construction quality.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. A method for improving the concrete pouring efficiency and compactness of a tunnel secondary lining arch wall is characterized in that an arch wall pouring template used in the method is a steel mould trolley, the concrete adopts high-performance micro-expansion self-compaction concrete, and the pouring is performed with mould grouting;
the steel mould trolley is provided with a plurality of pouring openings (1) and mould-carrying grouting holes (2), the mould-carrying grouting holes (2) are formed in two sides of each pouring opening (1), each pouring opening (1) is provided with a movable gate plate, the steel mould trolley is configured with a small shaping steel mould (4) for end mould plugging, the small shaping steel mould (4) is connected with a flange at the end of the steel mould trolley through bolts, bolt holes are all long round holes (6), an angle steel (5) back edge is arranged to reinforce the small shaping steel mould (4), the long round holes (6) in the small shaping steel mould (4) are radial long round holes, the long round holes (6) in the flange of the steel mould trolley are circumferential long round holes, the slump expansion degree of the high-performance micro-expansion self-compaction concrete in the mould is not less than 600mm, and the expansion limiting rate is more than 0.015%;
the pouring method comprises the following construction steps:
s1: installing the injection pipe with the mould in place, and opening the flashboards of all pouring openings (1);
s2: connecting the pump pipe to the end pouring opening (1) for pouring;
s3: when pouring to the side mold observation window, stopping the pump properly, and starting the flat plate vibrator for vibrating;
s4: and closing the gate plates of the other pouring openings (1) when the slurry overflows, and continuing pouring until all the grouting pipes with the molds and the highest ends of the end molds overflow the slurry, thus finishing pouring.
2. The method for improving the pouring efficiency and the compactness of the tunnel secondary lining arch wall concrete according to claim 1, characterized in that the whole pouring process only uses the end pouring opening (1) to carry out single-opening pouring without replacing the pouring opening.
3. The method for improving the pouring efficiency and compactness of the tunnel secondary lining arch wall concrete according to claim 1, wherein the tape casting is performed immediately after the pouring is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110339961.5A CN113137247B (en) | 2021-03-30 | 2021-03-30 | Method for improving concrete pouring efficiency and compactness of tunnel secondary lining arch wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110339961.5A CN113137247B (en) | 2021-03-30 | 2021-03-30 | Method for improving concrete pouring efficiency and compactness of tunnel secondary lining arch wall |
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| Publication Number | Publication Date |
|---|---|
| CN113137247A true CN113137247A (en) | 2021-07-20 |
| CN113137247B CN113137247B (en) | 2023-10-20 |
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| CN202110339961.5A Active CN113137247B (en) | 2021-03-30 | 2021-03-30 | Method for improving concrete pouring efficiency and compactness of tunnel secondary lining arch wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847063A (en) * | 2021-09-26 | 2021-12-28 | 兰州理工大学 | Tunnel secondary lining concrete construction simulation system and simulation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190286A (en) * | 2002-12-10 | 2004-07-08 | Gifu Kogyo Co Ltd | Concrete placing method and its apparatus for tunnel |
| JP2015094167A (en) * | 2013-11-13 | 2015-05-18 | 鹿島建設株式会社 | Concrete placing method |
| CN207634088U (en) * | 2017-11-01 | 2018-07-20 | 中铁隧道勘察设计研究院有限公司 | A kind of grouped controls for lining trolley and tamping equipment |
| CN109026065A (en) * | 2018-07-25 | 2018-12-18 | 中铁十六局集团有限公司 | A kind of Tunnel Second Lining zero-fault construction method |
| CN110410106A (en) * | 2019-07-30 | 2019-11-05 | 中铁十二局集团有限公司 | Tunnel vault band film grouting construction method |
| CN111335922A (en) * | 2020-03-25 | 2020-06-26 | 陕西公路交通科技开发咨询公司 | Lining trolley and tunnel secondary lining construction method using lining trolley |
| CN211258625U (en) * | 2019-08-30 | 2020-08-14 | 中铁五局集团第五工程有限责任公司 | Tunnel secondary lining platform truck end template |
-
2021
- 2021-03-30 CN CN202110339961.5A patent/CN113137247B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004190286A (en) * | 2002-12-10 | 2004-07-08 | Gifu Kogyo Co Ltd | Concrete placing method and its apparatus for tunnel |
| JP2015094167A (en) * | 2013-11-13 | 2015-05-18 | 鹿島建設株式会社 | Concrete placing method |
| CN207634088U (en) * | 2017-11-01 | 2018-07-20 | 中铁隧道勘察设计研究院有限公司 | A kind of grouped controls for lining trolley and tamping equipment |
| CN109026065A (en) * | 2018-07-25 | 2018-12-18 | 中铁十六局集团有限公司 | A kind of Tunnel Second Lining zero-fault construction method |
| CN110410106A (en) * | 2019-07-30 | 2019-11-05 | 中铁十二局集团有限公司 | Tunnel vault band film grouting construction method |
| CN211258625U (en) * | 2019-08-30 | 2020-08-14 | 中铁五局集团第五工程有限责任公司 | Tunnel secondary lining platform truck end template |
| CN111335922A (en) * | 2020-03-25 | 2020-06-26 | 陕西公路交通科技开发咨询公司 | Lining trolley and tunnel secondary lining construction method using lining trolley |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847063A (en) * | 2021-09-26 | 2021-12-28 | 兰州理工大学 | Tunnel secondary lining concrete construction simulation system and simulation method |
| CN113847063B (en) * | 2021-09-26 | 2024-01-26 | 兰州理工大学 | Tunnel secondary lining concrete construction simulation method |
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| Publication number | Publication date |
|---|---|
| CN113137247B (en) | 2023-10-20 |
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