CN113074002A - Method for connecting batch jacking gapped discrete steel structure pipe joint and tunnel portal - Google Patents
Method for connecting batch jacking gapped discrete steel structure pipe joint and tunnel portal Download PDFInfo
- Publication number
- CN113074002A CN113074002A CN202110305600.9A CN202110305600A CN113074002A CN 113074002 A CN113074002 A CN 113074002A CN 202110305600 A CN202110305600 A CN 202110305600A CN 113074002 A CN113074002 A CN 113074002A
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- Prior art keywords
- jacking
- steel pipe
- grouting
- pipe
- ring
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 47
- 239000010959 steel Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
Images
Classifications
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- 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
- E21D11/14—Lining predominantly with metal
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- 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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- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a method for connecting a batch jacking gapped discrete steel structure pipe joint with a hole door, which comprises the following steps of firstly, pre-burying an anchor bar and a hole door ring on the side wall of a lining of a hole opening, and fixing the anchor bar and the hole door ring; step two, embedding a grouting pipe in the side wall of the lining; and step three, jacking the steel pipe joints, and after the jacking of the steel pipe joints is finished, grouting into the grouting pipes to plug gaps between the side walls of the lining and the steel pipe joints. According to the invention, the tunnel portal ring and the steel pipe section are connected and sealed by arranging the end sealing plates to form a waterproof barrier, so that water flowing out from a gap between the pipe piece and the working well tunnel portal is effectively blocked, and the safety of the tunnel portal during jacking construction of the jacking pipe is fundamentally ensured; the construction is convenient and quick, the operation is simple, the connection forming effect is good, and the welding quality is ensured; compared with the traditional connecting interface, the post-cast ring beam is not required to be applied, the economic benefit is high, and the operability is strong.
Description
Technical Field
The invention relates to the technical field of underground structures, in particular to a method for connecting separated steel structure pipe joints and a tunnel portal in batch jacking.
Background
With the rapid development of economy and the increasing population density of China, the ground developable resources are less and less, and the land utilization rate tends to be saturated. Therefore, the development of cities into underground spaces is a necessary trend for the development of the international metropolis.
The underground excavation method in the prior art gradually becomes a preferred method for building an underground structure in a complex environment by virtue of the advantage that the underground excavation method has less interference to the ground environment. The pipe curtain method is used as an underground excavation method, and has the advantages of low noise during construction, small ground surface settlement, low construction space requirement, no need of road reconstruction and pipeline adjustment, suitability for underground construction of various soil bodies and the like.
When the existing pipe curtain method is used, during the connection construction of pipe joints and working well openings, the portal ring beam is usually used after the pipe joints are jacked and run through, the time is long, gaps exist between the pipe joints and the working well structure, the steel pipe joints are jacked in batches, underground water, fine sand and the like easily flow out of the gaps, cement paste in concrete is taken away, the construction quality of the portal ring beam is difficult to guarantee, more leakage points appear after the portal ring beam is sealed, the grouting and leaking stoppage effects are limited in the later period, and even the ground subsides due to the fact that the underground water and soil are lost through the gaps, and great risks are generated.
Therefore, how to effectively improve the operability and reliability of the sealing between the steel pipe joints pushed in batch and the working well door is a technical problem to be solved urgently by technical personnel in the technical field.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, a technical object of the present invention is to solve the technical problems mentioned in the above-mentioned background art.
In order to achieve the technical purpose, the invention provides a method for connecting separated steel structure pipe joints and a tunnel portal in batch jacking, which comprises the following steps:
firstly, embedding anchor bars and a hole portal ring on the side wall of the lining of the hole, and fixing the anchor bars and the hole portal ring;
step two, embedding a grouting pipe in the side wall of the lining;
jacking the steel pipe joints, and after the jacking of the steel pipe joints is finished, grouting into the grouting pipes to plug gaps between the side walls of the lining and the steel pipe joints;
fixing an end sealing plate, the hole door ring and a flange of the steel pipe joint through a fillet weld;
and fifthly, repeating the third step and the fourth step in sequence according to the jacking sequence of the steel pipe sections to complete the connection of all the steel pipe sections and the door ring.
Preferably, in the first step, the anchor bar is welded and fixed with the hole portal ring.
Preferably, in the third step, concrete is used for grouting in the grouting pipe.
Preferably, in the fourth step, the end sealing plate, the aperture door ring and the flange of the steel pipe joint are welded and fixed through the fillet weld.
Preferably, the grouting pipe is a seamless steel pipe with internal threads on both ends.
The invention has the beneficial effects that:
due to the innovation of the construction method, compared with the prior art, the invention has the following advantages:
firstly, the tunnel portal ring and the steel pipe joint are connected and sealed by arranging the end sealing plates to form a water-proof barrier, so that water flowing out from a gap between the pipe piece and the working well tunnel portal is effectively blocked, and the safety of the tunnel portal during jacking construction of the jacking pipe is fundamentally ensured.
Secondly, the post-cast ring beam is not required to be arranged, and the condition that the post-cast ring beam leaks due to the fact that the construction time is long, the construction quality is difficult to guarantee and the like during construction of the post-cast ring beam is avoided.
And moreover, the construction is convenient and quick, the operation is simple, the connection forming effect is good, and the welding quality is ensured.
And compared with the traditional connecting interface, the post-cast ring beam is not required to be applied, so that the economic benefit is high, and the operability is strong.
In conclusion, the invention not only solves the problem of sealing the steel pipe joints pushed in batches with the working well door, but also has simple process and strong operability, promotes the technical progress of industry, and has good economic and social benefits.
Drawings
FIG. 1 is a schematic structural view of a steel pipe joint of the present invention after being connected to a hole;
fig. 2 is a schematic structural view of the aperture door ring part of the present invention.
In the figure: 1 steel pipe section, 2 inside lining lateral walls, 3 anchor bars, 4 slip casting pipes, 5 hole door rings, 6 fillet welds, 7 end closing plates and 8 concrete.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Example (b):
as shown in fig. 1-2, a specific embodiment of the method for connecting pipe joints and portals of batch jacking gapped discrete steel structures of the present invention comprises the following steps:
firstly, pre-typesetting the steel pipe joint 1 before jacking the steel pipe joint 1, and preparing for construction;
secondly, embedding anchor bars 3 and a hole door ring 5 on the side wall 2 of the lining in advance, wherein the anchor bars 3 are welded with the hole door ring 5, and the hole door ring 5 is made of a steel plate;
step three, embedding a grouting pipe 4 in the lining side wall 2, wherein the grouting pipe 4 is a seamless steel pipe with internal threads at two ends;
fourthly, jacking the steel pipe joint 1, and after the jacking of the steel pipe joint 1 is finished, plugging a gap between the lining side wall 2 and the steel pipe joint 1 through a grouting pipe 4 by adopting concrete 8;
fifthly, manufacturing the end sealing plate 7, and welding the end sealing plate 7, the hole door ring 5 and the flange of the steel pipe joint 1 through the fillet weld 6 to form a waterproof barrier;
and step six, sequentially repeating the step three and the step four according to the jacking sequence of the steel pipe joints 1 to complete the connection of all the steel pipe joints 1 and the portal ring 5.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. A method for connecting a separated steel structure pipe joint with a tunnel portal in a batch jacking mode is characterized by comprising the following steps:
firstly, embedding anchor bars and a hole portal ring on the side wall of the lining of the hole, and fixing the anchor bars and the hole portal ring;
step two, embedding a grouting pipe in the side wall of the lining;
jacking the steel pipe joints, and after the jacking of the steel pipe joints is finished, grouting into the grouting pipes to plug gaps between the side walls of the lining and the steel pipe joints;
fixing an end sealing plate, the hole door ring and a flange of the steel pipe joint through a fillet weld;
and fifthly, repeating the third step and the fourth step in sequence according to the jacking sequence of the steel pipe sections to complete the connection of all the steel pipe sections and the door ring.
2. The method for connecting a pipe section with a gap and a discrete steel structure pushed in batch according to claim 1, wherein the anchor bars are welded and fixed with the portal ring in the first step.
3. The method for connecting a pipe section with a gap and a discrete steel structure pushed in batch according to claim 1, wherein concrete is used for grouting in the grouting pipe in the third step.
4. The method for connecting the discrete steel pipe joints with gaps in batch jacking as claimed in claim 1, wherein the end sealing plates, the hole door rings and the flanges of the steel pipe joints are welded and fixed by the fillet welds in the fourth step.
5. The method for connecting a pipe section with a gap and a discrete steel structure pushed in batch according to claim 1, wherein the grouting pipe is a seamless steel pipe with internal threads at two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305600.9A CN113074002A (en) | 2021-03-23 | 2021-03-23 | Method for connecting batch jacking gapped discrete steel structure pipe joint and tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305600.9A CN113074002A (en) | 2021-03-23 | 2021-03-23 | Method for connecting batch jacking gapped discrete steel structure pipe joint and tunnel portal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113074002A true CN113074002A (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110305600.9A Pending CN113074002A (en) | 2021-03-23 | 2021-03-23 | Method for connecting batch jacking gapped discrete steel structure pipe joint and tunnel portal |
Country Status (1)
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| CN (1) | CN113074002A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343455A (en) * | 2013-08-05 | 2015-02-11 | 中铁十八局集团第一工程有限公司 | Long-distance curved jacking pipe and pipe roof construction technique |
| CN206053969U (en) * | 2016-08-29 | 2017-03-29 | 广州市市政工程设计研究总院 | A kind of shield tunnel and open cut main body portal ring beam hermetic water-proof structure |
| CN107989638A (en) * | 2017-12-28 | 2018-05-04 | 中铁二局集团有限公司 | A kind of push pipe receives water-stopping method |
| CN108343450A (en) * | 2018-04-18 | 2018-07-31 | 中铁十四局集团有限公司 | A kind of new pipe-roof method active well ruggedized construction and reinforcement means |
| CN111395391A (en) * | 2020-04-13 | 2020-07-10 | 中国建筑一局(集团)有限公司 | Porous rectangular jacking pipe and light and shade cut connecting pipe gallery joint and construction method thereof |
| CN111577329A (en) * | 2020-04-30 | 2020-08-25 | 中国五冶集团有限公司 | Pipe curtain construction structure and construction method |
| CN112393027A (en) * | 2020-11-16 | 2021-02-23 | 上海市城市建设设计研究总院（集团）有限公司 | Top pipe hole-entering sealing ring beam structure |
-
2021
- 2021-03-23 CN CN202110305600.9A patent/CN113074002A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343455A (en) * | 2013-08-05 | 2015-02-11 | 中铁十八局集团第一工程有限公司 | Long-distance curved jacking pipe and pipe roof construction technique |
| CN206053969U (en) * | 2016-08-29 | 2017-03-29 | 广州市市政工程设计研究总院 | A kind of shield tunnel and open cut main body portal ring beam hermetic water-proof structure |
| CN107989638A (en) * | 2017-12-28 | 2018-05-04 | 中铁二局集团有限公司 | A kind of push pipe receives water-stopping method |
| CN108343450A (en) * | 2018-04-18 | 2018-07-31 | 中铁十四局集团有限公司 | A kind of new pipe-roof method active well ruggedized construction and reinforcement means |
| CN111395391A (en) * | 2020-04-13 | 2020-07-10 | 中国建筑一局(集团)有限公司 | Porous rectangular jacking pipe and light and shade cut connecting pipe gallery joint and construction method thereof |
| CN111577329A (en) * | 2020-04-30 | 2020-08-25 | 中国五冶集团有限公司 | Pipe curtain construction structure and construction method |
| CN112393027A (en) * | 2020-11-16 | 2021-02-23 | 上海市城市建设设计研究总院（集团）有限公司 | Top pipe hole-entering sealing ring beam structure |
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| PB01 | Publication | ||
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Application publication date: 20210706 |