CN104895586A - Anti-disengaging tunnel secondary lining concrete pouring constructing method and formwork system - Google Patents
Anti-disengaging tunnel secondary lining concrete pouring constructing method and formwork system Download PDFInfo
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- CN104895586A CN104895586A CN201510277793.6A CN201510277793A CN104895586A CN 104895586 A CN104895586 A CN 104895586A CN 201510277793 A CN201510277793 A CN 201510277793A CN 104895586 A CN104895586 A CN 104895586A
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Abstract
The invention discloses an anti-disengaging tunnel secondary lining concrete pouring constructing formwork system. The system mainly comprises a formwork body and a hydraulic jack, and an inversely-protruding round steel cylinder is arranged on the formwork body to form a T-shaped formwork. Accordingly, a corresponding anti-disengaging tunnel secondary lining concrete pouring constructing method is built. The method includes the steps that the T-shaped formwork with the concrete storage function is used, after concrete pouring vibration and before concrete prehardening, a piston in the T-shaped formwork is pushed through the hydraulic jack so as to press in concrete in the inversely-protruding round steel cylinder, and therefore the problem of disengaging normally occurring in tunnel concrete secondary lining is solved. Compared with a commonly-used method for processing disengaging through embedded pipe slip casting, the constructing method and the formwork system have the advantages of being simple and convenient to use; the problem of disengaging generated in secondary lining concrete pouring in a tunnel is solved, and the integrity of concrete secondary lining can be guaranteed.
Description
Technical field
The invention belongs to subterranean tunnel supporting construction technical field, particularly relate to a kind of concrete pouring construction method and template system of anti-Tunnel Second Lining of coming to nothing.
Background technology
After subterranean tunnel excavation, its supporting structure system country rock, close contact ensures underground structure resistance to overturning and prevents tunnel from producing the important guarantee factor of permeability water damage just and between secondary lining.The reason causing Tunnel Second Lining to come to nothing is a lot, as: pumping of concrete insufficient pressure, the distortion of falsework system, concrete shrinkage etc. often cause lining cutting leakiness behind, thus occur coming to nothing, this by serious threat to water resistance, safe operation and the service life in tunnel operation process.This type of process of coming to nothing often adopts built-in pipe injecting treatment, but this not only adds construction cost, and result also in operation increases, and has a strong impact on the construction of subsequent tunnel.Due to the existence of coming to nothing, make the system of country rock-just put on the load of lining cutting discontinuous, cause occurring that distortion increases or crackle (crack) destroys, make surrounding rock supporting structure progressive reduction occur along with the time.And cause in the factor of coming to nothing aforementioned, strengthen concrete pumping pressure and to a certain degree can suppress to come to nothing appearance, but concrete splash will be produced and cause harm is produced to constructor.For the distortion of falsework system, adopt steel form better to overcome, but also there is coming to nothing to a certain degree in the tunnel that many employing combined steel formworks are built.Concrete drying shrinkage is concrete self attributes, and interpolation micro-expanding agent can be adopted to be eliminated.But in Practical Project, the space of coming to nothing is often Centimeter Level even decimeter grade, and this brings very large hidden danger to the waterproof in tunnel.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of concrete pouring construction method that is simple and easy, anti-Tunnel Second Lining of coming to nothing easily and template system, with coming to nothing of overcoming that secondary lining concreting in tunnel produces.
For solving the problems of the technologies described above, the present invention by the following technical solutions: the concrete pouring construction template system of anti-Tunnel Second Lining of coming to nothing, comprise template, template is provided with the steel cylinder of falling projection circular shape and forms T-shaped template.
Template has the radian matched with Tunnel Design, is furnished with along template longitudinal separation the steel cylinder of falling projection circular shape.
The concrete pouring construction template system of above-mentioned anti-Tunnel Second Lining of coming to nothing also comprises hydraulic jack, jack piston connects propelling piston by force-transmitting pole, it is inner that propelling piston is placed in the steel cylinder of falling projection circular shape, and propelling piston end has the radian matched with template.
Use the concrete pouring construction method of the anti-Tunnel Second Lining of coming to nothing of above-mentioned template system, before building in T-shaped template and propelling piston painted concrete antitack agent, then by position that T-shaped model sheetinstallat is serious in position of coming to nothing; After a period of time is vibrated in concreting, by the jack be arranged in support pad, the concrete laid in T-shaped template in the steel cylinder of falling projection circular shape is ejected under propelling piston operation before concrete initial set, to make up the space in concreting process, and the detachment void space that under overcoming Action of Gravity Field, concrete produces at vault or heaving of causing waterproofing course to produce below causes coming to nothing of lining cutting because concrete self side pressure is not enough; Until concrete after maintenance in template to sufficient intensity, after the power of release jack top, withdraw from jack, and remove T-shaped template.
The deficiency producing and come to nothing cannot be overcome for existing tunnel secondary lining concreting technology, inventor has designed and produced a kind of concrete pouring construction template system of anti-Tunnel Second Lining of coming to nothing, this system mainly comprises template and hydraulic jack, and template is provided with the steel cylinder of falling projection circular shape and forms T-shaped template.Accordingly, inventor also establishes the concrete pouring construction method of corresponding anti-Tunnel Second Lining of coming to nothing, this method is by using the aforementioned T-shaped template with deposit concrete function, after concreting is vibrated and before concrete initial set, adopt hydraulic jack advance the piston in T-shaped template and be pressed into by the concrete in the steel cylinder of falling projection circular shape, thus solve the problem of coming to nothing often occurred in tunnel concrete secondary lining.The method that relatively conventional built-in pipe Grouting comes to nothing, construction method of the present invention and template system have simple and easy, feature easily, overcome secondary lining concreting in tunnel and produce the problem of coming to nothing, also can ensure that the integrality of concrete secondary liner.
Accompanying drawing explanation
Fig. 1 be the present invention prevent coming to nothing Tunnel Second Lining concrete pouring construction method in the view of concreting.
Fig. 2 be the present invention prevent coming to nothing Tunnel Second Lining concrete pouring construction method in advancing concrete view.
Fig. 3 be the present invention prevent coming to nothing Tunnel Second Lining concrete pouring construction method in complete and advance concrete view.
In figure: left Fig. 1 a, 2a, 3a are along tunnel lateral direction face schematic diagram, right Fig. 1 b, 2b, 3b are along tunnel longitudinal surface schematic diagram; 1 country rock, 2 preliminary bracings, 3 waterproofing courses, 4 come to nothing, 5 concrete, 6T section mould plate, 7 hydraulic jack, 8 hydraulic tubes, 9 jack pistons, 10 pads, 11 reaction frames, 12 force-transmitting poles, 13 propelling pistons, 14 gravity directions, 15 concrete dispersal directions, 16 circular steel cylinders.
Detailed description of the invention
As shown in Figures 1 to 3, the concrete pouring construction template system of anti-Tunnel Second Lining of coming to nothing of the present invention, comprises template and hydraulic jack 7.Template has the radian matched with Tunnel Design, is furnished with the steel cylinder of falling projection circular shape 16 along template longitudinal separation, forms T-shaped template 6.The jack piston 9 of hydraulic jack connects propelling piston by force-transmitting pole, and propelling piston is removably placed in that the steel cylinder of falling projection circular shape is inner, and propelling piston end has the radian matched with template, with concrete surperficial smoothly transition after ensureing jacking.
Use the concrete pouring construction method of the anti-Tunnel Second Lining of coming to nothing of aforementioned template system
Adopt the larger steel of intensity to make aforementioned T-shaped template and replace common templates, after the preliminary bracing 2 of country rock 1 and waterproofing course 3 apply, before building in T-shaped template and propelling piston painted concrete antitack agent, then by the position that T-shaped model sheetinstallat is serious in position of coming to nothing, and pad, hydraulic jack, force-transmitting pole 12 and propelling piston 13 are installed on reaction frame 11, after a period of time is vibrated in concreting, by hydraulic tube 8, the concrete laid in T-shaped template in the steel cylinder of falling projection circular shape is ejected in the other direction to gravity by the jack pressurization be arranged in support pad 10 under propelling piston operation before concrete 5 initial set, the concrete ejected spreads to surrounding, to make up the space in concreting process, and the detachment void space that under overcoming Action of Gravity Field, concrete produces at vault or cause lining cutting due to not enough and the heaving of causing waterproofing course to produce of concrete self side pressure below come to nothing 4, thus the concrete compaction filling of building is come to nothing the space at position, until concrete after maintenance in template to sufficient intensity, after the power of release jack top, withdraw from jack, and remove T-shaped template.After removing T-shaped template, wire brush should be adopted to clean down the capable template of T and propelling piston, and painted concrete antitack agent, avoid T-shaped template and piston generation corrosion, for next circulation build before template is maintained.
Claims (4)
1. a concrete pouring construction template system for anti-Tunnel Second Lining of coming to nothing, comprises template, it is characterized in that: described template is provided with the steel cylinder of falling projection circular shape and forms T-shaped template.
2. the concrete pouring construction template system of anti-Tunnel Second Lining of coming to nothing according to claim 1, is characterized in that: described template has the radian matched with Tunnel Design, is furnished with along template longitudinal separation the steel cylinder of falling projection circular shape.
3. the concrete pouring construction template system of anti-Tunnel Second Lining of coming to nothing according to claim 2, characterized by further comprising hydraulic jack, jack piston connects propelling piston by force-transmitting pole, it is inner that propelling piston is placed in the steel cylinder of falling projection circular shape, and propelling piston end has the radian matched with template.
4. use the concrete pouring construction method of the anti-Tunnel Second Lining of coming to nothing of template system described in claim 3, it is characterized in that: before building in T-shaped template and propelling piston painted concrete antitack agent, then by position that T-shaped model sheetinstallat is serious in position of coming to nothing; After a period of time is vibrated in concreting, by the jack be arranged in support pad, the concrete laid in T-shaped template in the steel cylinder of falling projection circular shape is ejected under propelling piston operation before concrete initial set, to make up the space in concreting process, and the detachment void space that under overcoming Action of Gravity Field, concrete produces at vault or heaving of causing waterproofing course to produce below causes coming to nothing of lining cutting because concrete self side pressure is not enough; Until concrete after maintenance in template to sufficient intensity, after the power of release jack top, withdraw from jack, and remove T-shaped template.
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| CN201510277793.6A CN104895586A (en) | 2015-05-27 | 2015-05-27 | Anti-disengaging tunnel secondary lining concrete pouring constructing method and formwork system |
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| CN201510277793.6A CN104895586A (en) | 2015-05-27 | 2015-05-27 | Anti-disengaging tunnel secondary lining concrete pouring constructing method and formwork system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014454A (en) * | 2016-07-11 | 2016-10-12 | 北京鸿锐嘉科技发展有限公司 | Grouting device and grouting technique for tunnel lining vault with mould |
| CN106522992A (en) * | 2016-11-24 | 2017-03-22 | 中铁隧道集团有限公司 | Concrete lining formwork trolley insertion-type concrete grouting construction method |
| CN107503772A (en) * | 2017-08-21 | 2017-12-22 | 中铁六局集团有限公司 | A kind of first branch bearing capacity test method in tunnel |
| CN109296387A (en) * | 2018-12-03 | 2019-02-01 | 湖南五新隧道智能装备股份有限公司 | A kind of trolley top module system |
| CN110424985A (en) * | 2019-08-23 | 2019-11-08 | 中铁十一局集团第五工程有限公司 | A kind of anti-forward direction of coming to nothing of tunnel vault concrete is rushed to summit device |
| CN113847063A (en) * | 2021-09-26 | 2021-12-28 | 兰州理工大学 | Tunnel secondary lining concrete construction simulation system and simulation method |
| CN116517588A (en) * | 2023-04-25 | 2023-08-01 | 广东水电二局股份有限公司 | Construction method for preventing tunnel lining vault from falling out and falling out preventing device thereof |
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| JP2005179891A (en) * | 2003-12-16 | 2005-07-07 | Kfc Ltd | Construction method of tunnel lining concrete |
| CN101566010A (en) * | 2009-03-25 | 2009-10-28 | 江苏建华建设有限公司 | Compaction forming construction method of concrete poured on the base of structure and device thereof |
| CN203809012U (en) * | 2014-03-12 | 2014-09-03 | 广州地铁设计研究院有限公司 | Shield tunnel foundation base reserved grouting and processing system |
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| CN204716255U (en) * | 2015-05-27 | 2015-10-21 | 广西交通科学研究院 | The concrete pouring construction template system of anti-Tunnel Second Lining of coming to nothing |
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| JP2005179891A (en) * | 2003-12-16 | 2005-07-07 | Kfc Ltd | Construction method of tunnel lining concrete |
| CN101566010A (en) * | 2009-03-25 | 2009-10-28 | 江苏建华建设有限公司 | Compaction forming construction method of concrete poured on the base of structure and device thereof |
| CN104295305A (en) * | 2014-02-12 | 2015-01-21 | 齐洪军 | Process for achieving synchronous implementation of lining vault filling grouting and tunnel lining and equipment |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014454A (en) * | 2016-07-11 | 2016-10-12 | 北京鸿锐嘉科技发展有限公司 | Grouting device and grouting technique for tunnel lining vault with mould |
| CN106014454B (en) * | 2016-07-11 | 2018-02-06 | 北京鸿锐嘉科技发展有限公司 | Tunnel-liner vault band is molded into sizing device and grouting process |
| CN106522992A (en) * | 2016-11-24 | 2017-03-22 | 中铁隧道集团有限公司 | Concrete lining formwork trolley insertion-type concrete grouting construction method |
| CN107503772A (en) * | 2017-08-21 | 2017-12-22 | 中铁六局集团有限公司 | A kind of first branch bearing capacity test method in tunnel |
| CN109296387A (en) * | 2018-12-03 | 2019-02-01 | 湖南五新隧道智能装备股份有限公司 | A kind of trolley top module system |
| CN110424985A (en) * | 2019-08-23 | 2019-11-08 | 中铁十一局集团第五工程有限公司 | A kind of anti-forward direction of coming to nothing of tunnel vault concrete is rushed to summit device |
| 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 |
| CN116517588A (en) * | 2023-04-25 | 2023-08-01 | 广东水电二局股份有限公司 | Construction method for preventing tunnel lining vault from falling out and falling out preventing device thereof |
| CN116517588B (en) * | 2023-04-25 | 2023-10-13 | 广东水电二局股份有限公司 | Construction method for preventing tunnel lining vault from falling out and falling out preventing device thereof |
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Application publication date: 20150909 |