CN103375171B - Start in a kind of shield structure hole counter-force frame - Google Patents
Start in a kind of shield structure hole counter-force frame Download PDFInfo
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- CN103375171B CN103375171B CN201310301993.1A CN201310301993A CN103375171B CN 103375171 B CN103375171 B CN 103375171B CN 201310301993 A CN201310301993 A CN 201310301993A CN 103375171 B CN103375171 B CN 103375171B
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Abstract
The present invention discloses the counter-force frame that starts in a kind of shield structure hole, comprise a framework, support bar A and support bar B, described framework is by a left side, the portal structures that right strutbeam and back timber connect to form, and back timber is curved, framework is by left, right strutbeam is fixed on the concrete surface of tunnel inverted arch, a left side for framework, right strutbeam is connected to support bar A, one end of support bar A is connected on framework, the other end of support bar A is connected on the pre-embedded steel slab in tunnel inverted arch concrete, one end of described support bar B is connected on the back timber of framework, the other end of support bar B is connected in first steel arch of tunnel drilling and blasting section. one aspect of the present invention can shorten the duration greatly, and on the other hand, construction technology is relatively simple, and the counter-force frame of the present invention is the one-piece construction adopting Steel Structure, and transportation of materials is relatively simple, and can use template chassis, it is not necessary to consider form bracing system.
Description
Technical field
The invention belongs to technical field of tunnel construction, particularly relate to the counter-force frame that starts in a kind of shield structure hole.
Background technology
Along with the development of economy, shield tunnel has become the main construction method of the underground rail transport development of city, China soft clay area and underground space development. So-called shield tunnel, refers to and adopts shield excavation machine to excavate, reinforced concrete segment is as the tunnel excavation construction method of liner supporting. Shielding method is adopted to build tunnel or various underground pipeline, it is generally in active well constructed in advance, carry out the installation of shield structure, debugging and trial trip, and it accurately is shelved on the pedestal meeting design axis, after all preparations of construction work is ready, start along design axis to tunneling construction in stratum (shield launching). When shield structure will arrive terminal, accurately measure the present situation position of shield structure, and adjust and control its attitude, make shield structure correctly enter (arrival) on the pedestal in the received well built in advance and install.
The operation that starts of shield structure is the critical process that shielding method builds tunnel, and the quality of this operation operating technique builds up the success or failure of the axial mass in rear tunnel or pipeline, the effect of the section of starting hole place's environment protection and engineering construction by directly having influence on.
Before shield launching advances, need that shield launching is installed in shield launching active well and advance counter-force frame, the negative endless tube sheet of first ring is arranged on shield launching and advances on counter-force frame, during shield launching, screw block is delivered on counter-force frame through negative endless tube sheet, thus provide shield launching to advance counter-force, and in shield launching process resistance suffered by balance shield and frictional force. Counter-force frame is the benchmark of tunnel duct piece structural orientation, it is resolved that the installation location of negative endless tube sheet, plays stable section of jurisdiction and effect that shield launching advances simultaneously.
At present, start in shield structure hole and all adopt counter force wall to start, there is following problem:
1) long in time limit, the construction duration reaches 60 days usually;
2) difficulty of construction is big, and because of place restriction in tunnel, concrete transportation difficulty is relatively big, and cannot use template chassis, form bracing system constructional difficulties;
3), during construction, first cast-in-place complete two lining concrete walls (counter force wall of holding concurrently) install prefabricated pipe section (shield launching ring) again, there is relatively wide arc gap between section of jurisdiction and precast concrete, and waterproof not easily processes, and interval overall waterproof is existed impact;
4) due to the impact of shield structure vehicle frame, two linings are built and cannot be used template chassis, can only use hundreds of pieces little model sheetinstallat constructions, and two lining apparent mass opposite formwork chassis constructions are poor.
Summary of the invention
In order to solve problems of the prior art, it is an object of the invention to provide the counter-force frame that starts in a kind of shield structure hole, it is possible to greatly improve the construction speed of the section of starting in hole, tunnel, shorten the duration.
In order to realize foregoing invention object, the present invention adopts following described technical scheme:
Start in a kind of shield structure hole counter-force frame, comprise a framework, support bar A and support bar B, described framework is by a left side, the portal structures that right strutbeam and back timber connect to form, and back timber is curved, framework is by left, right strutbeam is fixed on the concrete surface of tunnel inverted arch, a left side for framework, right strutbeam is connected to support bar A, one end of support bar A is connected on framework, the other end of support bar A is connected on the pre-embedded steel slab in tunnel inverted arch concrete, one end of described support bar B is connected on the back timber of framework, the other end of support bar B is connected in first steel arch of tunnel drilling and blasting section.
Further, the left strutbeam of framework and right strutbeam are all connected with 2 support bar A.
Further, described support bar A is the steel pipe of �� 300mm.
Further, the back timber of framework is connected with 8 support bar B.
Further, described support bar B is the steel pipe of �� 150mm.
Further, the left strutbeam of described framework and right strutbeam are all be made up of H400 shaped steel.
Further, the back timber of described framework is made up of 9 pieces of H400 shaped steel butt welded splice joint.
Owing to adopting technique scheme, the present invention has following superiority:
1, on the one hand, it is possible to greatly shorten the duration; On the other hand, construction technology is relatively simple, and the counter-force frame of the present invention is the one-piece construction adopting Steel Structure, and transportation of materials is relatively simple, and can use template chassis, it is not necessary to consider form bracing system;
2, adopt the counter-force frame of the present invention to carry out constructing tunnel, it is that prefabricated pipe section is first installed, more cast-in-place two lining concrete, combining closely between section of jurisdiction and two linings, waterproof effect is better; In addition, during two lining concrete placement, shield structure and vehicle frame enter the soil body completely, and therefore, two lining concrete placements can use integral mold plate chassis, and apparent mass is better.
Accompanying drawing explanation
Fig. 1 is the construction and installation schematic diagram of the present invention;
In figure: 1-inverted arch; The left strutbeam of 2-; 3-support bar B; 4-back timber; 5-support bar A; The right strutbeam of 6-.
Embodiment
Below in conjunction with drawings and Examples, the technical scheme of the present invention is described in further detail.
Composition graphs 1, start in a kind of shield structure hole counter-force frame, comprise a framework, support bar A5 and support bar B3, described framework is by left strutbeam 2, the portal structures that right strutbeam 6 and back timber 4 connect to form, and back timber 4 is curved, framework is by left, right strutbeam is fixed on the concrete surface of tunnel inverted arch 1, a left side for framework, right strutbeam is connected to support bar A5, one end of support bar A5 is connected on framework, the other end of support bar A5 is welded on the pre-embedded steel slab in the concrete of tunnel inverted arch 1, one end of described support bar B3 is connected on the back timber 4 of framework, the other end of support bar B3 is connected in first steel arch of tunnel drilling and blasting section.
All being connected with 2 support bar A5 on the left strutbeam 2 of framework, right strutbeam 6, support bar A5 is the steel pipe of �� 300mm.
Being connected with 8 support bar B3 on the back timber 4 of framework, support bar B3 is the steel pipe of �� 150mm.
The left strutbeam 2 of described framework and right strutbeam 6 are all be made up of H400 shaped steel, and back timber 4 is made up of 9 pieces of H400 shaped steel butt welded splice joint.
The Specific construction process of counter-force frame of the present invention is:
The main body of counter-force frame is connected to form by left strutbeam 2, right strutbeam 6 and back timber 4, its middle left and right strutbeam is one piece of H400 shaped steel, back timber 4 welds the arcuate structure formed, for enabling 11 block-type steel become as a whole, common by power, it is necessary to ensure to connect quality, therefore, first the left and right strutbeam of framework and back timber are connected with M27 bolt, then even forms entirety by welding.
The back timber 4 of framework its be made up of 9 pieces of H400 shaped steel, for the steel pipe of the support bar B3 employing �� 150mm of frame rear support back timber, propping up steel arch by power basis at the beginning of boring quick-fried section, the overall power transmission order of system is: shield structure counter-force �� framework back timber �� support bar B �� bore quick-fried section of steel arch.
The left strutbeam 2 of framework and right strutbeam 6 are all be made up of one piece of H400 shaped steel, it is the pre-embedded steel slab that �� 300mm steel pipe and the 20mm being embedded in inverted arch 1 concrete layer that is attached thereto are thick for the support bar A5 of the left and right strutbeam of frame rear support, it is inverted arch C35 Steel Concrete by power basis. The overall power transmission order of system is: the left and right strutbeam of shield structure counter-force �� framework �� support bar A �� pre-embedded steel slab �� C35 concrete inverted arch. Wherein, support bar A and pre-embedded steel slab are weldingly connected, and pre-embedded steel slab should oblique inverted arch of imbedding in advance, and be fixed on inverted arch concrete by welding the reinforcing bar that buries in advance of �� 28mm.
Claims (5)
1. start in a shield structure hole counter-force frame, it is characterized in that: comprise a framework, support bar A(5) and support bar B(3), described framework is by left strutbeam (2), the portal structures that right strutbeam (6) and back timber (4) connect to form, and back timber is curved, framework is by left, right strutbeam is fixed on the concrete surface of tunnel inverted arch (1), a left side for framework, right strutbeam is connected to support bar A(5), one end of support bar A is connected on framework, support bar A(5) the other end be connected on the pre-embedded steel slab in tunnel inverted arch (1) concrete, described support bar B(3) one end be connected on the back timber (4) of framework, the other end of support bar B is connected in first steel arch of tunnel drilling and blasting section, the left strutbeam (2) of framework and right strutbeam (6) are all connected with 2 support bar A(5), described support bar A(5) it is the steel pipe of �� 300mm.
2. start in shield structure hole according to claim 1 counter-force frame, it is characterized in that: be connected with 8 support bar B(3 on the back timber (4) of framework).
3. start in shield structure hole according to claim 1 counter-force frame, it is characterized in that: described support bar B(3) it is the steel pipe of �� 150mm.
4. start in shield structure hole according to claim 1 counter-force frame, it is characterized in that: the left strutbeam (2) of described framework and right strutbeam (6) are all be made up of H400 shaped steel.
5. start in shield structure hole according to claim 1 counter-force frame, it is characterized in that: the back timber (4) of described framework is made up of 9 pieces of H400 shaped steel butt welded splice joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310301993.1A CN103375171B (en) | 2013-07-18 | 2013-07-18 | Start in a kind of shield structure hole counter-force frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310301993.1A CN103375171B (en) | 2013-07-18 | 2013-07-18 | Start in a kind of shield structure hole counter-force frame |
Publications (2)
| Publication Number | Publication Date |
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| CN103375171A CN103375171A (en) | 2013-10-30 |
| CN103375171B true CN103375171B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310301993.1A Active CN103375171B (en) | 2013-07-18 | 2013-07-18 | Start in a kind of shield structure hole counter-force frame |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590839B (en) * | 2013-11-25 | 2016-04-13 | 中铁十八局集团有限公司 | Subway station cast-in-place structural portal support construction technology |
| CN103953353B (en) * | 2014-04-23 | 2015-12-23 | 中铁十五局集团有限公司 | Shield launching reaction frame and installation and application thereof |
| AU2016200783B1 (en) * | 2015-05-28 | 2016-04-21 | Commonwealth Scientific And Industrial Research Organisation | System and method for controlling a mining machine using identifying characteristics |
| CN105114089B (en) * | 2015-07-26 | 2017-07-28 | 中铁十八局集团隧道工程有限公司 | Shield formula TBM originates split type reaction frame in hole |
| CN110593884B (en) * | 2019-08-21 | 2020-11-27 | 中铁工程装备集团有限公司 | Connecting channel tunneling machine |
| CN111365008A (en) * | 2020-04-14 | 2020-07-03 | 中建八局轨道交通建设有限公司 | Narrow space shield machine receiving device and receiving method thereof |
| CN113685202B (en) * | 2021-08-19 | 2023-08-18 | 中铁四局集团第四工程有限公司 | Counterforce wall structure for jacking cohesive soil layer pipe curtain and construction method |
| CN113565542B (en) * | 2021-09-26 | 2021-12-14 | 徐州鼎德科技制造有限公司 | Formwork support for tunnel construction and matched formwork |
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| CN103375171A (en) | 2013-10-30 |
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