CN101725354A - Cable tunnel shaft enclosure structure and shield machine cutting construction method thereof - Google Patents
Cable tunnel shaft enclosure structure and shield machine cutting construction method thereof Download PDFInfo
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- CN101725354A CN101725354A CN200810217001A CN200810217001A CN101725354A CN 101725354 A CN101725354 A CN 101725354A CN 200810217001 A CN200810217001 A CN 200810217001A CN 200810217001 A CN200810217001 A CN 200810217001A CN 101725354 A CN101725354 A CN 101725354A
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- cable tunnel
- tunnel shaft
- frp muscle
- enclosure structure
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Abstract
The invention discloses a cable tunnel shaft enclosure structure, which is provided with a reinforcement structure formed by connecting an upper reinforcement cage, a middle FRP reinforcement cage and a lower reinforcement cage. At the same time, the invention discloses a shield machine cutting construction method for the cable tunnel shaft enclosure structure. The construction method comprises the following steps: lifting, lapping and binding the upper reinforcement cage, the middle FRP reinforcement cage and the lower reinforcement cage; casting concrete to form the cable tunnel shaft enclosure structure; and cutting the cable tunnel shaft enclosure structure when a shield machine advances to the FRP reinforcement cage and a cutter head of the shield machine is replaced by a hob, a toothed cutter or a scraper. By means of the enclosure structure and the construction method, the construction progress of a cable tunnel is sped up, and the abrasion on cutters of the shield machine is reduced to a certain extent, so the enclosure structure and the construction method are suitable to be popularized in enclosure structures at the inlet and the outlet of a cable tunnel shaft for the shield machine.
Description
Technical field
The present invention relates to a kind of space enclosing structure, related in particular to a kind of cable tunnel shaft and enclosed the expansion structure.
The invention still further relates to the shield machine cutting construction method of this cable tunnel shaft enclosure structure.
Background technology
Along with the Chinese Urbanization construction makes constant progress, undergroundization of cable such as electric power, communication develop into inevitable trend, and building of underground cable tunnel replaced large-scale high voltage iron tower and corresponding overhead wire, for urbanization process is vacateed more aboveground space.The vertical shaft of cable tunnel adopts reinforcing bar or steel plate as the space enclosing structure that strengthens body usually, reaching the purpose of sealing, antiseepage and load-bearing, will inevitably select shield construction carrying out cable tunnel construction.But in the shield tunnel construction, tunnel piercing is during to the vertical shaft position, with the cutter of shield machine directly cutting serve as the space enclosing structure difficulty very that strengthens body with reinforcing bar or steel plate, be easy to cause problems such as tool damage, reinforcing bar jam cutterhead, therefore, for making things convenient for shield machine into and out of cable tunnel shaft, the general method of artificial broken muscle that adopts is cut a hole the space enclosing structure of going to the corresponding position, not only operating environment is arduous for this method, labour intensity is big, simultaneously because the cutting of space enclosing structure destruction, problems such as underground water pours in, soil body landslide very easily appear, and greatly dangerous.
Adopt artificial broken muscle with the time, in order to ensure construction safety, before artificial the cutting, also must reinforce or do temporary lining to the soil body of shield machine outside the cable tunnel shaft position.The processing of adopting at present has high-pressure rotary spraying method, deep mixing method, chemical grouting method or freezing method etc., and this has not only increased the construction cost that vertical shaft is gone along with sb. to guard him, and has prolonged construction period; Also the work plane of vertical shaft construction is had higher requirement, to the influence increase of traffic on every side and building.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome technological deficiency recited above, a kind of short construction period, construction costs is low, labour intensity is low and the construction safety coefficient is high cable tunnel shaft enclosure structure are provided, the shield machine cutting construction method of cable tunnel shaft enclosure structure is provided simultaneously.
In order to solve technical problem recited above, the present invention takes following technical scheme:
The invention provides a kind of cable tunnel shaft enclosure structure, have the enhancing body structure, described enhancing body structure is for being connected the enhancing body structure that forms by upper reinforcement cage, middle part FRP muscle cage and lower rebar cage.
Wherein, the position of described FRP muscle cage in space enclosing structure is corresponding into and out of the position of cable tunnel shaft with shield machine, and the height of FRP muscle cage is greater than the turnover height of shield machine.
Described space enclosing structure adopts the form of stake, and reinforcing cage is the cylindrical shape reinforcing cage, and FRP muscle cage is a cylindrical shape FRP muscle cage, and the upper and lower part reinforcing cage connects with FRP muscle cage.The upper and lower part reinforcing cage connects by direct colligation with FRP muscle cage.
Described space enclosing structure adopts the form of body of wall, and reinforcing cage is the rectangle reinforcing cage, and FRP muscle cage is a rectangle FRP muscle cage, and upper and lower part reinforcing cage and FRP muscle cage are by gusset piece and steel Bolt Connection.
Described FRP muscle cage is GFRP muscle cage or CFRP muscle cage, and wherein, FRP is a fiber-reinforced polymer, and GFRP is a glass fiber reinforced polymer, and CFRP is a carbon fiber reinforced polymer.
The present invention also provides the shield machine cutting construction method of above-mentioned cable tunnel shaft enclosure structure, comprise the steps: after lower rebar cage, middle part FRP muscle cage and the lifting of upper reinforcement cage, overlap joint, the colligation, fluid concrete, form cable tunnel shaft enclosure structure, when shield machine tunnels to the FRP muscle cage location of cable tunnel shaft, after the cutterhead of shield machine is replaced by hobboing cutter, serrated knife or scraper, carry out the cutting of cable tunnel shaft enclosure structure again.
The present invention is directed in the existing cable tunnel shield construction, shield machine passes through vertical shaft is because problems such as artificial broken muscle and the safety that operations such as soil body temporary lining outside the hole are caused, cost raising, claim for eot with the reinforcing bar when strengthening the space enclosing structure of body, directly cut the FRP muscle cage of cable tunnel shaft enclosure structure by shield machine, avoided using the method cutter of artificial broken muscle to go the steel concrete of corresponding position to go along with sb. to guard him, thereby shortened construction period, reduced work difficulty and intensity, improved working security.Adopt space enclosing structure of the present invention and job practices, both accelerated the construction speed of cable tunnel, also reduced the wearing and tearing of shield machine blade to a certain extent, be suitable in the space enclosing structure at cable tunnel shaft place, promoting the use of at shield machine.
Description of drawings
Fig. 1 is the schematic diagram of shield structure cutting cable tunnel shaft enclosure structure.
Fig. 2 is that FRP muscle cage connects schematic diagram with reinforcing cage.
Fig. 3 is the gusset piece structural representation.
The specific embodiment
See also Fig. 1, Fig. 2 and Fig. 3, space enclosing structure of the present invention is different with traditional space enclosing structure, traditional space enclosing structure usually with reinforcing bar or steel plate as strengthening body, enhancing body structure of the present invention then is made of upper and lower part reinforcing cage and middle part FRP muscle cage 2; The position of FRP muscle cage 2 is corresponding into and out of the position of cable tunnel shaft with shield machine 7, and the height of FRP muscle cage 2 can pass through shield machine 7 greater than the turnover height of shield machine 7 in FRP muscle cage 2; Form a complete enhancing body structure by connecting between upper reinforcement cage 1, middle part FRP muscle cage 2, the lower rebar cage 3.Wherein, FRP muscle cage 2 can be GFRP muscle cage or CFRP muscle cage; Can connect or directly colligation connection by gusset piece 4 and steel bolt 5 between upper reinforcement cage 1, middle part FRP muscle cage 2, the lower rebar cage 3, have several bolts hole 6 on the gusset piece 4.
The shield machine cutting construction method of cable tunnel shaft enclosure structure of the present invention, comprise the steps: after lower rebar cage 3, middle part FRP muscle cage 2 and 1 lifting of upper reinforcement cage, overlap joint, the colligation, fluid concrete, form cable tunnel shaft enclosure structure, when shield machine 7 tunnels to FRP muscle cage 2 positions of cable tunnel shaft, after the cutterhead of shield machine 7 is replaced by hobboing cutter, serrated knife or scraper, carry out the cutting of cable tunnel shaft enclosure structure again.
(1) if space enclosing structure adopts the form of reinforcing cage for the stake of collocation enhancing, then concrete job practices is as follows:
I, stake hole:, can adopt manually digging hole or rig pore-forming according to different geological conditionss.FRP muscle cage and the reinforcing cage that to make before finish in the stake hole are carried to the job site;
After finish in II, stake hole,, reserve enough lap length more than the face of land, and do interim support the lifting of lower rebar cage, an insertion stake hole;
III, with middle part FRP muscle cage lifting, the reinforcing bar corresponding with the lower rebar cage press that design length overlaps, colligation;
IV, middle part FRP muscle cage after the colligation is inserted a stake hole, reserve enough lap length more than the face of land, and do interim support;
V, with upper reinforcement cage lifting, the FRP muscle corresponding with FRP muscle cage press that design length overlaps, colligation;
VI, the upper reinforcement cage that colligation is good insert the stake hole to projected depth, and do interim support;
VII, insertion conduit fluid concrete form cable tunnel shaft enclosure structure.
(2) if space enclosing structure adopts the cast-in-place continuous underground wall structure of reinforcing cage for the collocation enhancing, then concrete job practices is as follows:
A, preparation of construction comprise that unit groove is divided, equipment is marched into the arena installation, the steel concrete guide groove is constructed, the slurry coat method pond is provided with and system of mixing and guide hole construction;
B, groove construction, groover pass through and construct orderly, make groove depth be controlled at same absolute altitude.
C, the clear end and enhancing cage body construction strengthen the cage body by design welding, colligation; Require lower rebar cage bottom apart from more than the bottom land 10cm-20cm, cage body side surface to concrete surface stays the gap of 5cm-15cm.
After D, groove were finished, with the lifting of lower rebar cage, insertion groove, the bonding part was reserved in more than the face of land, and does interim support;
E, with FRP muscle cage lifting, with the lower rebar cage by gusset piece and steel Bolt Connection;
F, will connect good FRP muscle cage and insert a stake hole, the bonding part is reserved in more than the face of land, and does interim support;
G, with upper reinforcement cage lifting, with FRP muscle cage by gusset piece and steel Bolt Connection;
H, will connect good reinforcing cage and insert groove, and do interim support to projected depth;
I, insertion conduit fluid concrete form cable tunnel shaft enclosure structure.
In above-mentioned (one), (twos') shield method cable tunnel construction, when shield machine tunnels to the FRP muscle cage location of cable tunnel shaft enclosure structure, with the cutter changing of cutter head of shield machine is hobboing cutter, serrated knife or scraper, just can directly cut the space enclosing structure of cable tunnel shaft, into and out of cable tunnel shaft.
Although the present invention has done to describe in detail and quoted embodiment as proof, for those of ordinary skill in the art, obviously various schemes, modification and the change that can make according to above-mentioned explanation all should be included within the scope of claim.
Claims (7)
1. a cable tunnel shaft enclosure structure has the enhancing body structure, it is characterized in that: described enhancing body structure is for being connected the enhancing body structure that forms by upper reinforcement cage (1), middle part FRP muscle cage (2) and lower rebar cage (3).
2. cable tunnel shaft enclosure structure according to claim 1, it is characterized in that: the position of described FRP muscle cage (2) in space enclosing structure is corresponding into and out of the position of cable tunnel shaft with shield machine (7), and the height of FRP muscle cage (2) is greater than the turnover height of shield machine (7).
3. cable tunnel shaft enclosure structure according to claim 1, it is characterized in that: described space enclosing structure adopts the form of stake, the upper and lower part reinforcing cage is the cylindrical shape reinforcing cage, and FRP muscle cage is a cylindrical shape FRP muscle cage, and the upper and lower part reinforcing cage connects with FRP muscle cage.
4. cable tunnel shaft enclosure structure according to claim 3 is characterized in that: the upper and lower part reinforcing cage connects by direct colligation with FRP muscle cage.
5. cable tunnel shaft enclosure structure according to claim 1, it is characterized in that: described space enclosing structure adopts the form of body of wall, the upper and lower part reinforcing cage is the rectangle reinforcing cage, and FRP muscle cage is a rectangle FRP muscle cage, and upper and lower part reinforcing cage and FRP muscle cage are by gusset piece and steel Bolt Connection.
6. according to the arbitrary described cable tunnel shaft enclosure structure of claim 1-5, it is characterized in that: described FRP muscle cage (2) is GFRP muscle cage or CFRP muscle cage.
7. shield machine cutting construction method as the arbitrary described cable tunnel shaft enclosure structure of claim 1-6, comprise the steps: after lower rebar cage (3), middle part FRP muscle cage (2) and upper reinforcement cage (1) lifting, overlap joint, the colligation, fluid concrete, form cable tunnel shaft enclosure structure, when shield machine (7) tunnels to FRP muscle cage (2) position of cable tunnel shaft, after the cutterhead of shield machine (7) is replaced by hobboing cutter, serrated knife or scraper, carry out the cutting of cable tunnel shaft enclosure structure again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810217001A CN101725354A (en) | 2008-10-15 | 2008-10-15 | Cable tunnel shaft enclosure structure and shield machine cutting construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810217001A CN101725354A (en) | 2008-10-15 | 2008-10-15 | Cable tunnel shaft enclosure structure and shield machine cutting construction method thereof |
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| Publication Number | Publication Date |
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| CN101725354A true CN101725354A (en) | 2010-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810217001A Pending CN101725354A (en) | 2008-10-15 | 2008-10-15 | Cable tunnel shaft enclosure structure and shield machine cutting construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401595B (en) * | 2016-10-31 | 2018-11-13 | 中铁隧道局集团有限公司 | The method for arranging of the hobboing cutter of reinforcement in concrete is directly cut in shield machine |
| CN110985026A (en) * | 2019-12-23 | 2020-04-10 | 中建五局土木工程有限公司 | Shield station-crossing construction method for layered backfilling in narrow shaft |
| CN112593967A (en) * | 2020-12-08 | 2021-04-02 | 安徽唐兴机械装备有限公司 | Push bench cutter head with cage type hob cutting device |
-
2008
- 2008-10-15 CN CN200810217001A patent/CN101725354A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401595B (en) * | 2016-10-31 | 2018-11-13 | 中铁隧道局集团有限公司 | The method for arranging of the hobboing cutter of reinforcement in concrete is directly cut in shield machine |
| CN110985026A (en) * | 2019-12-23 | 2020-04-10 | 中建五局土木工程有限公司 | Shield station-crossing construction method for layered backfilling in narrow shaft |
| CN110985026B (en) * | 2019-12-23 | 2022-02-11 | 中建五局土木工程有限公司 | Shield station-crossing construction method for layered backfilling in narrow shaft |
| CN112593967A (en) * | 2020-12-08 | 2021-04-02 | 安徽唐兴机械装备有限公司 | Push bench cutter head with cage type hob cutting device |
| CN112593967B (en) * | 2020-12-08 | 2024-03-19 | 安徽唐兴装备科技股份有限公司 | Push bench cutterhead with cage type hob cutting device |
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Application publication date: 20100609 |