CN111720138A - Tunnel and underground engineering formwork lining supporting structure and supporting method thereof - Google Patents
Tunnel and underground engineering formwork lining supporting structure and supporting method thereof Download PDFInfo
- Publication number
- CN111720138A CN111720138A CN202010504433.6A CN202010504433A CN111720138A CN 111720138 A CN111720138 A CN 111720138A CN 202010504433 A CN202010504433 A CN 202010504433A CN 111720138 A CN111720138 A CN 111720138A
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- top plate
- jacking
- movable
- pipe
- upper top
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Classifications
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
Abstract
The invention is suitable for the technical field of engineering, and provides a tunnel and underground engineering mould-built lining supporting structure which comprises a plurality of jacking pipes, wherein each jacking pipe is butted with each other, each jacking pipe consists of an upper top plate, a lower top plate, a movable plate and a protective brim, the movable plate is positioned between the upper top plate and the lower top plate, the movable plate is detachably connected with the upper top plate and the lower top plate, the protective brim is fixedly connected with the upper top plate, and the protective brim is matched with the movable plate; constitute the push pipe support in using and in the entrance to a cave department of excavation to form interim supporting structure main part, take out the fly leaf thereupon, and after carrying out concrete placement thereupon, alright carry out the earthwork excavation in the main part of structure, have the characteristics of security height under the supporting role of a plurality of push pipes, and be used for rich water and sandy soil layer, combine the all grouting of pipe, can form better waterproof closed loop, avoid precipitation on a large scale, and can effectively ensure construction safety.
Description
Technical Field
The invention belongs to the technical field of engineering, and particularly relates to a molded lining supporting structure for tunnels and underground engineering and a supporting method thereof.
Background
With the rapid development of urbanization construction and underground engineering in China, large underground structures in special environments such as busy sections of cities and complex geological conditions are increasing day by day. The deformation control requirements of excavation of underground spaces of partial sections on existing building structures and ground surface traffic infrastructures at the periphery of the underground spaces are high, the traditional shallow-buried underground excavation construction method is difficult to meet the actual engineering requirements, and the research and the adoption of a large-span shallow-buried urban underground engineering construction method which is more scientific, safe, efficient and controllable in deformation are urgently needed.
Since the last 80 th century, the rapid development of the economy of China has expanded the scale of cities, the level of urbanization has been continuously improved, and particularly, the traveling mode of residents in large and medium-sized cities has been greatly changed, and the environment-friendly and efficient passenger transport system of urban rail transit is fully developed in large and medium-sized cities and urban groups, such as Yangtze river delta, Zhujiang delta, Jingjin pond and other areas. At present, more than 70 subway lines are constructed nationwide, and the urban rail transit investment reaches 1.23 trillion yuan. In the next decade, the development direction of urban traffic in China is as follows: on the premise of sustainable development, the economic development is taken as a main line, and a multi-level and three-dimensional modern urban traffic system is initially established by combining with homeland planning; the demand management is implemented, and the growing traffic demand is scientifically and reasonably controlled and guided; the urban rail transit construction is enhanced, the transition from the conventional public transit on the ground to the urban traffic system taking the urban rail transit as a main part is realized in a large city, the service quality of the urban traffic is improved while the scale of the traffic infrastructure is improved, and the conversion to the international standard is further realized.
Meanwhile, the central area of the city in China is developing towards the direction of comprehensively utilizing underground space, and the initial civil air defense engineering is developing to underground commercial streets, transportation hubs, underground entertainment facilities and the like. The underground street in the center of the city is the extension of the ground space and is also the important supplement of the city function, and the synchronous and coordinated development with the ground can be finally realized. It is easy to find that the underground space of the city is continuously developed and matured, the development and utilization degree of the underground space is increased year by year, and complex projects with multiple functions are gradually formed in large and medium-sized cities.
The current subway design specification puts the design principle of 'safe and reliable, energy-saving and environment-friendly and advanced technology' into the general outline of subway design in China. The wide application of the formwork lining support method can fundamentally improve the safety and reliability of shallow-buried large-span urban rail transit underground excavation construction, and plays an important technical support role in the development of urban rail transit.
When the formwork lining support method is used for construction, the construction operation space is relatively narrow when concrete is poured in a formwork, the concrete is not easy to vibrate, and although self-compacting concrete is usually adopted in the design, the pouring still has quality hidden trouble, and measures such as targeted management, monitoring, inspection, maintenance and the like need to be adopted in the future construction so as to ensure the pouring quality of the large-volume self-compacting concrete.
Disclosure of Invention
The invention provides a formwork lining supporting structure for tunnels and underground engineering and a supporting method thereof, aiming at solving the problems that when the formwork lining supporting method is used for construction, the construction operation space is relatively narrow when concrete is poured in a formwork, the concrete is not easy to vibrate, and the pouring still has hidden quality troubles although self-compacting concrete is usually adopted in the design.
The invention is realized in such a way that a tunnel and underground engineering mold building lining supporting structure comprises a plurality of jacking pipes, wherein each jacking pipe is butted with each other, each jacking pipe is composed of an upper top plate, a lower top plate, a movable plate and a protective cap peak, the movable plate is positioned between the upper top plate and the lower top plate and is detachably connected with the upper top plate and the lower top plate, the protective cap peak is fixedly connected with the upper top plate, and the protective cap peak is matched with the movable plate.
Preferably, the top pipe further comprises a movable lock catch, and the movable plate is detachably connected to the upper top plate and the lower top plate through the movable lock catch.
Preferably, each of the top tubes is provided with two movable plates, the protection brim corresponds to a gap formed between two adjacent movable plates, and the protection brim is arc-shaped.
Preferably, the top pipe further comprises a support upright, and the support upright is supported between the upper top plate and the lower top plate.
Preferably, the support columns are arranged in a plurality and are sequentially arranged along the length direction of the movable plate, and each support column is spaced from three meters to five meters.
Preferably, the upper top plate and the lower top plate are both provided with a plurality of parts, and the upper top plate and the lower top plate are spliced with each other to form an arc shape.
Preferably, a cavity is formed inside each top pipe, and each cavity is separated by a movable plate.
A method for supporting a modular lining of a tunnel and underground engineering comprises the following steps:
step S10: setting the thickness of a structural layer according to structural load and stress requirements;
step S20: dividing the structural layer into a plurality of jacking pipes;
step S30: constructing a jacking pipe and completely jacking all the jacking pipes;
step S40: the movable side plate is pulled away, and all the jacking pipes are annularly communicated together;
step S50: arranging circumferential and longitudinal steel bars and pouring concrete;
step S60: and excavating earthwork in the tunnel.
Preferably, in step S10, the thickness of the structural layer needs to be greater than one and a half meters.
Compared with the prior art, the invention has the beneficial effects that: according to the tunnel and underground engineering mold-built lining supporting structure and the supporting method thereof, the upper top plate, the lower top plate and the movable plate are arranged, the jacking pipes are formed during use and supported at the excavated hole, the temporary supporting structure main body is formed, the movable plate is pulled out along with the jacking pipes, concrete pouring is carried out along with the jacking pipes, earthwork excavation in the structure main body can be carried out, the structure has the characteristic of high safety under the supporting action of a plurality of jacking pipes, and the structure is used for water-rich and sandy soil layers, can form a good waterproof closed ring by combining with grouting around the pipes, avoids large-range precipitation and can effectively guarantee construction safety.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the jacking pipe in the present invention;
FIG. 3 is a schematic view of a movable plate structure in the present invention;
FIG. 4 is a schematic flow diagram of a method of the present invention;
in the figure: 1. jacking pipes; 11. an upper top plate; 12. a lower top plate; 13. a movable plate; 14. a movable lock catch; 15. protecting the brim; 16. and supporting the upright post.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a tunnel and underground works mould build lining supporting construction, includes a plurality of push pipes 1, docks each other between every push pipe 1, and push pipe 1 comprises last roof 11, roof 12 down, fly leaf 13 and protection brim of a hat 15, and fly leaf 13 is located between roof 11 and the roof 12 down, and fly leaf 13 can dismantle to be connected in last roof 11 and roof 12 down, protection brim of a hat 15 fixed connection in last roof 11, and protection brim of a hat 15 and fly leaf 13 looks adaptation.
In the embodiment, before excavation is needed, a lining template needs to be built along the contour line of the excavation, firstly, the thickness of a structural layer needs to be set according to the structural load and stress requirements and the space requirements of personnel operation in the jacking pipe 1, the thickness of the structural layer generally needs to be more than one point and two meters, then, the structural layer is divided into a plurality of jacking pipes 1, each jacking pipe 1 is relatively independent, when each jacking pipe 1 is installed, firstly, two movable plates 13 need to be installed between an upper top plate 11 and a lower top plate 12, the movable plates 13 are fixed between the upper top plate 11 and the lower top plate 12 through movable latches 14, in addition, one supporting upright post 16 is arranged at intervals of 3-5 m on each movable plate 13, the support between the upper top plate 11 and the lower top plate 12 is realized through the supporting upright posts 16, secondly, one end of each upper top plate 11 is provided with an arc-shaped protective cap 15, after the plurality of jacking pipes 1 are spliced, the protection brim 15 corresponds to the joint between the two jacking pipes 1, a certain gap is formed between two adjacent movable plates 13 inside the jacking pipes 1 due to the splicing of the jacking pipes 1, the gap is covered by the protection brim 15, the stability of surrounding rocks at the joint of the two jacking pipes 1 can be further protected, the sand soil is prevented from being extruded to the gap and being deformed and leaked, then, after the jacking pipes 1 are completely butted and constructed, the movable lock 14 can be opened, the movable lock 14 is pulled out from between the upper top plate 11 and the lower top plate 12 through the opening of the movable lock 14, the cavity inside each jacking pipe 1 is communicated through the pulling out of the movable lock 13, circumferential and longitudinal steel bars are arranged in the jacking pipes 1, concrete is poured, and after the steel concrete in the jacking pipes 1 reaches the designed strength, the earth in the tunnel is excavated.
Further, the top tube 1 further comprises a movable lock 14, and the movable plate 13 is detachably connected to the upper top plate 11 and the lower top plate 12 through the movable lock 14.
In the present embodiment, the movable lock 14 is fixed to the movable plate 13, and hooks (not shown) are provided on both the upper top plate 11 and the lower top plate 12, and when the movable plate 13 is fixed, it is necessary to hang the lock of the movable lock 14 on the hooks of the upper top plate 11 and the lower top plate 12, and the movable plate 13 is fixed to the upper top plate 11 and the lower top plate 12 by using both of them.
Furthermore, each top pipe 1 is provided with two movable plates 13, the protection brim 15 corresponds to a gap formed between two adjacent movable plates 13, and the protection brim 15 is arc-shaped.
In the embodiment, in the using process, after the plurality of jacking pipes 1 are spliced, the protective cap peak 15 corresponds to the joint between the two jacking pipes 1, a certain gap is formed between two adjacent movable plates 13 inside the jacking pipes 1 due to the splicing of the jacking pipes 1, and the gap is covered by the protective cap peak 15, so that the stability of surrounding rocks at the joint of the two jacking pipes 1 can be protected, and the sand soil is prevented from extruding, deforming and leaking to the gap.
Further, the jacking pipe 1 further comprises a support upright 16, and the support upright 16 is supported between the upper top plate 11 and the lower top plate 12; the plurality of support columns 16 are arranged in sequence along the length direction of the movable plate 13, and each support column 16 is spaced three meters to five meters apart.
In the present embodiment, in the using process, the plurality of support columns 16 are provided to stably support the space between the upper top plate 11 and the lower top plate 12, so that the phenomenon of subsequent collapse can be avoided.
Further, the upper top plate 11 and the lower top plate 12 are provided in plurality, and the plurality of upper top plates 11 and the plurality of lower top plates 12 are mutually spliced to form an arc shape.
In the present embodiment, during the use process, the plurality of upper and lower top plates 11 and 12 are provided, so that the top pipe 1 can be smoothly formed, has the same contour as the excavated part, and can smoothly build the lining form with respect to the contour line of the excavated part.
Further, a cavity is formed inside each top pipe 1, and each cavity is separated by a movable plate 13.
In the present embodiment, during use, the movable plate 13 is extracted from between the upper top plate 11 and the lower top plate 12, the cavity inside each top pipe 1 is communicated by the extraction of the movable plate 13, and then the circumferential and longitudinal steel bars are arranged in the cavity, and concrete is poured.
Referring to fig. 4, a lining support method for tunnel and underground engineering molding includes the following steps:
step S10: setting the thickness of a structural layer according to structural load and stress requirements;
step S20: dividing the structural layer into a plurality of jacking pipes;
step S30: constructing a jacking pipe and completely jacking all the jacking pipes;
step S40: the movable side plate is pulled away, and all the jacking pipes are annularly communicated together;
step S50: arranging circumferential and longitudinal steel bars and pouring concrete;
step S60: and excavating earthwork in the tunnel.
In the embodiment, before excavation is needed, a lining template needs to be built along the contour line of the excavation, firstly, the thickness of a structural layer needs to be set according to the structural load and stress requirements and the space requirements of personnel operation in the jacking pipe 1, the thickness of the structural layer generally needs to be more than one point and two meters, then, the structural layer is divided into a plurality of jacking pipes 1, each jacking pipe 1 is relatively independent, when each jacking pipe 1 is installed, firstly, two movable plates 13 need to be installed between an upper top plate 11 and a lower top plate 12, the movable plates 13 are fixed between the upper top plate 11 and the lower top plate 12 through movable latches 14, in addition, one supporting upright post 16 is arranged at intervals of 3-5 m on each movable plate 13, the support between the upper top plate 11 and the lower top plate 12 is realized through the supporting upright posts 16, secondly, one end of each upper top plate 11 is provided with an arc-shaped protective cap 15, after the plurality of jacking pipes 1 are spliced, the protection brim 15 corresponds to the joint between the two jacking pipes 1, a certain gap is formed between two adjacent movable plates 13 inside the jacking pipes 1 due to the splicing of the jacking pipes 1, the gap is covered by the protection brim 15, the stability of surrounding rocks at the joint of the two jacking pipes 1 can be further protected, the sand soil is prevented from being extruded to the gap and being deformed and leaked, then, after the jacking pipes 1 are completely butted and constructed, the movable lock 14 can be opened, the movable lock 14 is pulled out from between the upper top plate 11 and the lower top plate 12 through the opening of the movable lock 14, the cavity inside each jacking pipe 1 is communicated through the pulling out of the movable lock 13, circumferential and longitudinal steel bars are arranged in the jacking pipes 1, concrete is poured, and after the steel concrete in the jacking pipes 1 reaches the designed strength, the earth in the tunnel is excavated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a tunnel and underground works mould lining support structure which characterized in that: the novel pipe jacking device comprises a plurality of pipe jacking pipes (1), each pipe jacking pipe (1) is in butt joint with each other, the pipe jacking pipes (1) are composed of an upper top plate (11), a lower top plate (12), a movable plate (13) and a protection brim (15), the movable plate (13) is located between the upper top plate (11) and the lower top plate (12), the movable plate (13) is detachably connected with the upper top plate (11) and the lower top plate (12), the protection brim (15) is fixedly connected with the upper top plate (11), and the protection brim (15) is matched with the movable plate (13).
2. The modular lining support structure for tunnels and underground works according to claim 1, wherein: the jacking pipe (1) further comprises a movable lock catch (14), and the movable plate (13) is detachably connected to the upper top plate (11) and the lower top plate (12) through the movable lock catch (14).
3. The modular lining support structure for tunnels and underground works according to claim 1, wherein: each jacking pipe (1) is provided with two movable plates (13), the protection brim (15) corresponds to a gap formed between two adjacent movable plates (13), and the protection brim (15) is arc-shaped.
4. The modular lining support structure for tunnels and underground works according to claim 1, wherein: the jacking pipe (1) further comprises a supporting upright post (16), and the supporting upright post (16) is supported between the upper top plate (11) and the lower top plate (12).
5. The modular lining support structure for tunnels and underground works according to claim 4, wherein: the supporting columns (16) are arranged in a plurality and are sequentially arranged along the length direction of the movable plate (13), and each supporting column (16) is spaced from three meters to five meters.
6. The modular lining support structure for tunnels and underground works according to claim 1, wherein: go up roof (11) and roof (12) down and all be provided with a plurality ofly, and a plurality of go up roof (11) and roof (12) splice each other and be circular-arc.
7. The modular lining support structure for tunnels and underground works according to claim 1, wherein: cavities are formed in the top pipes (1), and the cavities are separated by movable plates (13).
8. A tunnel and underground engineering mould building lining supporting method is characterized in that: the method comprises the following steps:
step S10: setting the thickness of a structural layer according to structural load and stress requirements;
step S20: dividing the structural layer into a plurality of jacking pipes;
step S30: constructing a jacking pipe and completely jacking all the jacking pipes;
step S40: the movable side plate is pulled away, and all the jacking pipes are annularly communicated together;
step S50: arranging circumferential and longitudinal steel bars and pouring concrete;
step S60: and excavating earthwork in the tunnel.
9. The modular lining support method for tunnels and underground works according to claim 8, wherein: in step S10, the thickness of the structural layer needs to be greater than one point and two meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504433.6A CN111720138A (en) | 2020-06-05 | 2020-06-05 | Tunnel and underground engineering formwork lining supporting structure and supporting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504433.6A CN111720138A (en) | 2020-06-05 | 2020-06-05 | Tunnel and underground engineering formwork lining supporting structure and supporting method thereof |
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| CN111720138A true CN111720138A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010504433.6A Pending CN111720138A (en) | 2020-06-05 | 2020-06-05 | Tunnel and underground engineering formwork lining supporting structure and supporting method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681590A (en) * | 1992-09-04 | 1994-03-22 | Sumitomo Metal Ind Ltd | Tunnel lining segment |
| JPH10159491A (en) * | 1996-11-27 | 1998-06-16 | Kajima Corp | Hinge structure of tunnel timbering material and expansion structure |
| CN1594833A (en) * | 2004-06-25 | 2005-03-16 | 清华大学 | Steel plate-concrete composite lining |
| CN103321658A (en) * | 2013-06-26 | 2013-09-25 | 中铁工程设计咨询集团有限公司 | Molded lining support structure and construction method for soft soil ground layer |
| CN204126653U (en) * | 2014-08-27 | 2015-01-28 | 中国电建集团华东勘测设计研究院有限公司 | A kind of integrated ground shield lining circular ring structure |
| CN105484765A (en) * | 2016-01-11 | 2016-04-13 | 北京市轨道交通设计研究院有限公司 | Fabricated secondary lining structure of bored tunnel and construction method of fabricated secondary lining structure |
| CN207420587U (en) * | 2017-11-23 | 2018-05-29 | 中国铁路总公司 | One kind is suitable for TBM tunnel-liner rings |
| CN109404008A (en) * | 2018-11-28 | 2019-03-01 | 中国水利水电科学研究院 | Intelligent prestressed concrete liner tunnel |
| CN209369834U (en) * | 2019-01-08 | 2019-09-10 | 四川公路桥梁建设集团有限公司 | A kind of prefabricated assembled secondary liner structure in tunnel |
-
2020
- 2020-06-05 CN CN202010504433.6A patent/CN111720138A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0681590A (en) * | 1992-09-04 | 1994-03-22 | Sumitomo Metal Ind Ltd | Tunnel lining segment |
| JPH10159491A (en) * | 1996-11-27 | 1998-06-16 | Kajima Corp | Hinge structure of tunnel timbering material and expansion structure |
| CN1594833A (en) * | 2004-06-25 | 2005-03-16 | 清华大学 | Steel plate-concrete composite lining |
| CN103321658A (en) * | 2013-06-26 | 2013-09-25 | 中铁工程设计咨询集团有限公司 | Molded lining support structure and construction method for soft soil ground layer |
| CN204126653U (en) * | 2014-08-27 | 2015-01-28 | 中国电建集团华东勘测设计研究院有限公司 | A kind of integrated ground shield lining circular ring structure |
| CN105484765A (en) * | 2016-01-11 | 2016-04-13 | 北京市轨道交通设计研究院有限公司 | Fabricated secondary lining structure of bored tunnel and construction method of fabricated secondary lining structure |
| CN207420587U (en) * | 2017-11-23 | 2018-05-29 | 中国铁路总公司 | One kind is suitable for TBM tunnel-liner rings |
| CN109404008A (en) * | 2018-11-28 | 2019-03-01 | 中国水利水电科学研究院 | Intelligent prestressed concrete liner tunnel |
| CN209369834U (en) * | 2019-01-08 | 2019-09-10 | 四川公路桥梁建设集团有限公司 | A kind of prefabricated assembled secondary liner structure in tunnel |
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Application publication date: 20200929 |