CN203239357U - Adjacent tunnel supporting structure suitable for collapsible loess - Google Patents
Adjacent tunnel supporting structure suitable for collapsible loess Download PDFInfo
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- CN203239357U CN203239357U CN 201320258536 CN201320258536U CN203239357U CN 203239357 U CN203239357 U CN 203239357U CN 201320258536 CN201320258536 CN 201320258536 CN 201320258536 U CN201320258536 U CN 201320258536U CN 203239357 U CN203239357 U CN 203239357U
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Abstract
The utility model relates to an adjacent tunnel supporting structure suitable for collapsible loess. A primary support in a mid-board of an arcade tunnel does not extend into skewbacks and is connected with the mid-board, so that differential settlement happens easily. According to the adjacent tunnel supporting structure, a middle pilot tunnel is excavated at first, and mid-board lining concrete is poured into the middle pilot tunnel. After a master cave advance support is constructed, master cave side pilot tunnels are excavated, and master cave primary supports are respectively constructed. An upper half fracture surface of a master cave is excavated, a primary support of the master cave upper half fracture surface is constructed, when the rest of parts are excavated, foam concrete at the master cave mid-board is poured at the master cave mid-board, a master cave primary support at the master cave mid-board is constructed, and secondary lining concrete is poured into a master cave inverted arch and side walls. The secondary lining concrete is poured into the master cave in an overall pouring mode. A left cave and a right cave are separated through the mid-board, a primary support of the left cave and a primary support of the right cave directly extend into the skewbacks, rings are formed independently, a stress structure is automatically formed, and the problems that the primary supports are fractured and warped easily, and secondary lining is fractured due to the fact that the primary support of the left cave and the primary support of the right cave share the same mid-board are solved.
Description
Technical field
The utility model belongs to highway tunnel support technology field, be specifically related to a kind of be applicable to collapsible loess closely connect tunnel support structure.
Background technology
When Class I highway, freeway tunnel wiring, generally press the separate section laying, but be subjected to the restriction of landform or controlled atural object, width of cloth route is difficult to separately generally adopt multiple-arch tunnel about highway.But the Middle Wall of Multi-Arch Highway Tunnel place is the position of the easiest generation disease in the tunnel.In the construction because of impacts such as hole, the left and right sides successively sequence of construction, wall rock conditions, the easiest generation differential settlement in Middle Wall of Multi-Arch Highway Tunnel place or under the Eccentric Load effect, be offset; If ground is weak or punish improperly, make easily the preliminary bracing distortion, the changing of the relative positions that are supported on the mid-board, cause supporting to invade limit, increase the risk of two lining crackings.
In traditional design, the Middle Wall of Multi-Arch Highway Tunnel place, preliminary bracing does not extend to arch springing, but preliminary bracing and mid-board join.In the collapsible loess stratum, the one, country rock and Supporting Structure deformation amount are large than other stratum, need strict its sedimentation and deformation of control; The 2nd, the weak and tool settlement by soaking of loess foundation needs consolidated subsoil and Compaction variables, disturbed soil again in processing procedure, aggravation country rock and Supporting Structure deformation; The 3rd because middle pilot tunnel in advance, lag behind the repeatedly perturbed problem of staggered construction of hole, the left and right sides, relative settlement occurs in left and right sides hole easily, and preliminary bracing is directly joined with mid-board, is very easy to cause just to ftracture.If adopt without the nearly connecting structure of mid-board formula, because of the loess vertical joints development, very easily cave in by the middle wall side haunch top soil body, construction risk is very big, can't satisfy the needs of must the reservation larger cavern of the dynamo-electric institute of highway operation.
Summary of the invention
The purpose of this utility model provide a kind of construction safety, operation easy, effectively solve the tunnel subsidence distortion be applicable to collapsible loess closely connect tunnel support structure.
The technical scheme that the utility model adopts is:
A kind of be applicable to collapsible loess closely connect tunnel support structure, performed Zuo Dong and You Dong, it is characterized in that:
Performed middle pilot tunnel between described Zuo Dong and the right hole, the main hole preliminary bracing in Zuo Dong and right hole is independent Cheng Huan all, and perfusion mid-board lining concrete forms the mid-board between Zuo Dong and the right hole in the middle pilot tunnel.
Perform middle pilot tunnel preliminary bracing in the described middle pilot tunnel, and be provided with middle pilot tunnel vault ductule and middle pilot tunnel inverted arch steel pipe pile.
Described Zuo Dong and right hole have all performed main hole advance support, the preliminary bracing of main hole and main hole secondary lining concrete.
Described main hole preliminary bracing is the composite lining structure, is comprised of steel arch frame, grouting pipe, anchor pole, sprayed mortar and steel mesh reinforcement;
Described main hole secondary lining concrete adopts reinforced concrete structure.
Lay waterproofing course and drainage between described main hole preliminary bracing and the main hole secondary lining concrete.
Be provided with foam concrete between the mid-board lining concrete of described middle pilot tunnel and the main hole preliminary bracing in Zuo Dong and right hole.
The utlity model has following advantage:
(1) the structure stress system is clear and definite: compare with normal multiple-arch tunnel, this novel practical technology is separated hole, the left and right sides by mid-board, the preliminary bracing of hole, the left and right sides is not that the mid-board that is placed on middle pilot tunnel is lining with, but directly extend to arch springing, make hole, left and right sides preliminary bracing independence Cheng Huan, about two holes have force structure of one's own.
(2) working procedure is simple: compare with traditional multiple-arch tunnel, working procedure is basic identical, adopts the construction of three pilot tunnel methods, and pilot tunnel in the excavation is built the mid-board concrete first, and then main hole about the excavation applies hole, left and right sides supporting and protection structure.
(3) the control deformation effect is good: by preliminary bracing system and the buffering foam concrete that the ring seal of independent one-tenth is set, can allow supporting and protection structure suitably to be out of shape, solve the preliminary bracing of hole, the left and right sides and shared the incidental preliminary bracing cracking of mid-board, distortion, secondary lining problems of crack.
Description of drawings
Fig. 1 closely connects the tunnel support structure profile.
The structure section figure of pilot tunnel place among Fig. 2.
Among the figure, pilot tunnel among the 1-, the left hole of 2-, the right hole of 3-, pilot tunnel preliminary bracing among the 4-, pilot tunnel vault ductule among the 5-, pilot tunnel inverted arch steel pipe pile among the 6-, 7-mid-board lining concrete, 8-mid-board foam concrete, 9-master hole advance support, the preliminary bracing of 10-master hole contains abutment wall position anchor pole, 11-master hole secondary lining concrete, the left hole of 12-side pilot tunnel, the right hole of 13-side pilot tunnel, the right side backfill of 14-mid-board.
The specific embodiment
Below in conjunction with the specific embodiment the utility model is described in detail.
Described in the utility model be applicable to collapsible loess closely connect tunnel support structure, it is a kind of wire laying mode that is applicable to be subjected to when width of cloth route is difficult to separately about landform restriction, highway, left hole 2 and right hole 3 have been performed, performed middle pilot tunnel 1 between left hole 2 and the right hole 3, the main hole preliminary bracing 10 in left hole 2 and right hole 3 is independent Cheng Huan all, the mid-board that perfusion mid-board lining concrete 7 forms between left hole 2 and the right hole 3 in the middle pilot tunnel 1.Main hole preliminary bracing 10 is not to be placed on the mid-board lining concrete 7 of middle pilot tunnel 1, but extends to arch springing, has structural system of one's own.
Perform middle pilot tunnel preliminary bracing 4 in the middle pilot tunnel 1, and be provided with middle pilot tunnel vault ductule 5 and middle pilot tunnel inverted arch steel pipe pile 6.
Left hole 2 and right hole 3 have all performed main hole advance support 9, main hole preliminary bracing 10 and main hole secondary lining concrete 11.Main hole preliminary bracing 10 is the composite lining structure, is comprised of steel arch frame, grouting pipe, anchor pole, sprayed mortar and steel mesh reinforcement.Described main hole secondary lining concrete 11 adopts reinforced concrete structure.Lay waterproofing course and drainage between main hole preliminary bracing 10 and the main hole secondary lining concrete 11.
Be provided with buffering between the main hole preliminary bracing 10 in the mid-board lining concrete 7 of middle pilot tunnel 1 and left hole 2 and right hole 3 with foam concrete 8, can allow supporting and protection structure suitably to be out of shape.
Described in the utility model be applicable to collapsible loess closely connect tunnel support structure, build first mid-board between the hole, the left and right sides, reinforce by the middle above soil layer of wall side haunch section and substrate basis, hole, left and right sides preliminary bracing independence Cheng Huan, the foam concrete that allows distortion is set between mid-board and preliminary bracing, can effectively solve the relative settlement problem of successively constructing in hole, the left and right sides, prevent from caving in by the middle wall side haunch top soil body, reduce the risk of secondary lining concrete cracking.Simultaneously can utilize mid-board thickness that the cavern is set, overcome without in wall closely connect the tunnel and reserve the cavern problem is set.The tunnel adopts three pilot tunnel methods excavation, and middle pilot tunnel in advance.Below be the Specific construction step:
Step 1: pilot tunnel in the excavation performs middle pilot tunnel preliminary bracing, and sets middle pilot tunnel vault ductule, strengthening stratum; Set middle pilot tunnel inverted arch steel pipe pile, foundation; Pilot tunnel mid-board lining concrete in the perfusion; Backfill is carried out on the mid-board right side;
Step 2: after performing the advance support in Zuo Dong and right hole, excavate left hole side pilot tunnel and right hole side pilot tunnel, and perform respectively the side pilot tunnel preliminary bracing of left hole and right side side pilot tunnel preliminary bracing;
Step 3: first section that excavates left hole, perform first section preliminary bracing of left hole, then excavate the remaining part in left hole, perform mid-board place, left hole foam concrete after, perform the mid-board place master hole preliminary bracing of left hole, left hole inverted arch and abutment wall are built the secondary lining concrete;
Excavate first section in right hole 3, perform first section preliminary bracing of right hole, then excavate the remaining part in right hole, remove the backfill on mid-board right side, after performing mid-board place, right hole foam concrete, perform the mid-board place master hole preliminary bracing of right hole, right hole inverted arch and abutment wall are built the secondary lining concrete;
Step 4: Zuo Dong and right hole be monobloc cast secondary lining concrete respectively.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model manual is claim of the present utility model and contains.
Claims (6)
- One kind be applicable to collapsible loess closely connect tunnel support structure, performed left hole (2) He Youdong (3), it is characterized in that:Performed middle pilot tunnel (1) between described left hole (2) He Youdong (3), the main hole preliminary bracing (10) of left hole (2) He Youdong (3) is independent Cheng Huan all, and perfusion mid-board lining concrete (7) forms the mid-board between left hole (2) He Youdong (3) in the middle pilot tunnel (1).
- According to claim 1 a kind of be applicable to collapsible loess closely connect tunnel support structure, it is characterized in that:Perform middle pilot tunnel preliminary bracing (4) in the described middle pilot tunnel (1), and be provided with middle pilot tunnel vault ductule (5) and middle pilot tunnel inverted arch steel pipe pile (6).
- According to claim 1 and 2 a kind of be applicable to collapsible loess closely connect tunnel support structure, it is characterized in that:Described left hole (2) He Youdong (3) has all performed main hole advance support (9), main hole preliminary bracing (10) and main hole secondary lining concrete (11).
- According to claim 3 a kind of be applicable to collapsible loess closely connect tunnel support structure, it is characterized in that:Described main hole preliminary bracing (10) is the composite lining structure, is comprised of steel arch frame, grouting pipe, anchor pole, sprayed mortar and steel mesh reinforcement;Described main hole secondary lining concrete (11) adopts reinforced concrete structure.
- According to claim 4 a kind of be applicable to collapsible loess closely connect tunnel support structure, it is characterized in that:Lay waterproofing course and drainage between described main hole preliminary bracing (10) and the main hole secondary lining concrete (11).
- According to claim 5 a kind of be applicable to collapsible loess closely connect tunnel support structure, it is characterized in that:Be provided with foam concrete (8) between the mid-board lining concrete (7) of described middle pilot tunnel (1) and the main hole preliminary bracing (10) of left hole (2) He Youdong (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320258536 CN203239357U (en) | 2013-05-14 | 2013-05-14 | Adjacent tunnel supporting structure suitable for collapsible loess |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320258536 CN203239357U (en) | 2013-05-14 | 2013-05-14 | Adjacent tunnel supporting structure suitable for collapsible loess |
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| CN203239357U true CN203239357U (en) | 2013-10-16 |
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| CN 201320258536 Expired - Fee Related CN203239357U (en) | 2013-05-14 | 2013-05-14 | Adjacent tunnel supporting structure suitable for collapsible loess |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298516A (en) * | 2015-11-11 | 2016-02-03 | 中铁二院工程集团有限责任公司 | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation |
| CN105822327A (en) * | 2016-05-20 | 2016-08-03 | 中国电建集团铁路建设有限公司 | Lateral advance reinforcement construction method with underground excavation small pilot tunnels |
| CN105937399A (en) * | 2016-05-31 | 2016-09-14 | 中国科学院武汉岩土力学研究所 | Coordination deformation support system suitable for soft-rock large-deformation tunnel, and support method of support system |
| CN109026064A (en) * | 2018-07-16 | 2018-12-18 | 中铁第四勘察设计院集团有限公司 | A kind of construction method that large span multiple-arch tunnel is hazy |
| CN109026076A (en) * | 2018-09-25 | 2018-12-18 | 中交第三航务工程局有限公司南京分公司 | Wall multiple-arch tunnel transverse direction long duct positioning reinforcing device and installation method in a kind of nothing |
| CN110017143A (en) * | 2019-05-10 | 2019-07-16 | 兰州铁道设计院有限公司 | A kind of auxiliary method of small interval loess tunnel construction of central division wall |
| CN110630283A (en) * | 2019-09-12 | 2019-12-31 | 山东大学 | Three-layer supporting structure suitable for double-arch tunnel and construction method |
| CN111075454A (en) * | 2020-01-17 | 2020-04-28 | 中铁十九局集团第三工程有限公司 | Double-arch tunnel five-hole excavation method |
| CN111485904A (en) * | 2020-04-24 | 2020-08-04 | 中国五冶集团有限公司 | Construction method for large-section multi-arch tunnel mid-partition wall |
| CN112412474A (en) * | 2020-11-25 | 2021-02-26 | 中交二航局第二工程有限公司 | Multi-arch tunnel construction method |
| CN113622941A (en) * | 2021-09-10 | 2021-11-09 | 中铁一局集团第五工程有限公司 | Large-span double-arch tunnel excavation method under urban complex environment |
| CN114352292A (en) * | 2021-12-31 | 2022-04-15 | 中交路桥建设有限公司 | Shallow-buried bias-pressure multi-arch tunnel construction method for weathering phyllite stratum |
-
2013
- 2013-05-14 CN CN 201320258536 patent/CN203239357U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298516A (en) * | 2015-11-11 | 2016-02-03 | 中铁二院工程集团有限责任公司 | Combined supporting structure of steel pipe pile steel-bar-embedded tunnel composite lining used for soft foundation |
| CN105822327A (en) * | 2016-05-20 | 2016-08-03 | 中国电建集团铁路建设有限公司 | Lateral advance reinforcement construction method with underground excavation small pilot tunnels |
| CN105937399A (en) * | 2016-05-31 | 2016-09-14 | 中国科学院武汉岩土力学研究所 | Coordination deformation support system suitable for soft-rock large-deformation tunnel, and support method of support system |
| CN109026064A (en) * | 2018-07-16 | 2018-12-18 | 中铁第四勘察设计院集团有限公司 | A kind of construction method that large span multiple-arch tunnel is hazy |
| CN109026076B (en) * | 2018-09-25 | 2024-01-19 | 中交第三航务工程局有限公司 | Positioning and reinforcing device for transverse long guide pipe of non-middle-wall multi-arch tunnel and mounting method |
| CN109026076A (en) * | 2018-09-25 | 2018-12-18 | 中交第三航务工程局有限公司南京分公司 | Wall multiple-arch tunnel transverse direction long duct positioning reinforcing device and installation method in a kind of nothing |
| CN110017143A (en) * | 2019-05-10 | 2019-07-16 | 兰州铁道设计院有限公司 | A kind of auxiliary method of small interval loess tunnel construction of central division wall |
| CN110630283A (en) * | 2019-09-12 | 2019-12-31 | 山东大学 | Three-layer supporting structure suitable for double-arch tunnel and construction method |
| CN110630283B (en) * | 2019-09-12 | 2020-11-24 | 山东大学 | Three-layer supporting structure suitable for double-arch tunnel and construction method |
| CN111075454B (en) * | 2020-01-17 | 2022-01-04 | 中铁十九局集团第三工程有限公司 | Double-arch tunnel five-hole excavation method |
| CN111075454A (en) * | 2020-01-17 | 2020-04-28 | 中铁十九局集团第三工程有限公司 | Double-arch tunnel five-hole excavation method |
| CN111485904A (en) * | 2020-04-24 | 2020-08-04 | 中国五冶集团有限公司 | Construction method for large-section multi-arch tunnel mid-partition wall |
| CN112412474A (en) * | 2020-11-25 | 2021-02-26 | 中交二航局第二工程有限公司 | Multi-arch tunnel construction method |
| CN113622941A (en) * | 2021-09-10 | 2021-11-09 | 中铁一局集团第五工程有限公司 | Large-span double-arch tunnel excavation method under urban complex environment |
| CN114352292A (en) * | 2021-12-31 | 2022-04-15 | 中交路桥建设有限公司 | Shallow-buried bias-pressure multi-arch tunnel construction method for weathering phyllite stratum |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 |