CN109505621A - A kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure - Google Patents
A kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure Download PDFInfo
- Publication number
- CN109505621A CN109505621A CN201910077045.1A CN201910077045A CN109505621A CN 109505621 A CN109505621 A CN 109505621A CN 201910077045 A CN201910077045 A CN 201910077045A CN 109505621 A CN109505621 A CN 109505621A
- Authority
- CN
- China
- Prior art keywords
- shock attenuation
- area
- tunnel
- antidetonation shock
- earthquake
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Abstract
The invention discloses a kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structures, including extending the preceding stabilization zone for being set in turn in tunnel inner wall, antidetonation shock attenuation area and post-reinforcing area into tunnel from tunnel portal, the preceding stabilization zone and post-reinforcing area include preliminary bracing structure, reinforced concrete floor and secondary liner structure from outside to inside, the antidetonation shock attenuation area includes preliminary bracing structure, rubber shock-absorbing floor and secondary liner structure from outside to inside, by being fixedly connected from the anchor pole that tunnel portal extends into tunnel between the preceding stabilization zone, antidetonation shock attenuation area and post-reinforcing area.Compared with prior art, the invention has the benefit that earthquake load can effectively be absorbed, to play the purpose of railway tunnel especially railway tunnel Portal Section antidetonation shock attenuation, earthquake territory railway tunnel structure is avoided to be likely to occur earthquake, and then from guaranteeing the operation security of earthquake territory railway tunnel.
Description
Technical field
The present invention relates to railway tunnel shock resisting technical field, especially a kind of earthquake territory railway tunnel Portal Section antidetonation subtracts
Shake structure.
Background technique
The continental earthquake that China is born is approximately the one third of global continent earthquake, becomes the most country of continental earthquake.
Local transit operation and the upgrading build of civil engineering structure, operation maintenance etc. are caused greatly to hinder earthquake territory；In addition, meizoseismal area
It can cause very important influence to civil engineering structure, the long-term Experience of Earthquake in China and practice have shown that under highlight lines severe earthquake action,
The shock resistance of underground engineering structure is significantly better than ground structure.And tunnel structure has good anti-seismic performance and can be in certain journey
The influence that secondary disaster after shaking is resisted on degree, as the first choice in all kinds of traffic structures of earthquake territory.It is shaken in Tunnel Engineering
The evil origin cause of formation is broadly divided into two classes: first is that structure quake caused by earthquake destroys, second is that the changing of the relative positions caused by fault belt
It destroys, wherein the first origin of damage is common type, is mainly tied under Earthquake Inertia Force Acting effect due to underground engineering
Structure destroys, and mostly occurs in tunnel portal section and shallow embedding location, is mainly influenced by Earthquake Inertia Force Acting.
Currently, tunnel shock resisting measure mainly includes changing 2 kinds of shock mitigation system of the rigidity of structure and setting.The first mainly leads to
Promotion tunnel structure stiffness by itself is crossed to resist earthquake load, but this method increases expense and with structure to a certain extent
Rigidity increases born earthquake load and also constantly increases；Second is that damping system is added between tunnel structure and country rock
System reduces earthquake effect suffered by tunnel by deformation controlling for rock surrounding gateways.In general, for meizoseismal area railway tunnel Portal Section and
Speech, due to being main earthquake region, setting shock resisting, which constructs, to be of great significance.
Summary of the invention
The invention aims to solve the deficiencies in the prior art, a kind of earthquake territory railway tunnel Portal Section is provided
Antidetonation shock attenuation structure effectively improves the anti-of this area's railway tunnel and subtracts to reduce influence of the earthquake to railway tunnel Portal Section
Shock stability, and construction is simple, cost is relatively low.
In order to achieve the above objectives, the present invention is implemented according to following technical scheme:
A kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure, including extended from tunnel portal into tunnel and be set in turn in
Preceding stabilization zone, antidetonation shock attenuation area and the post-reinforcing area of tunnel inner wall, the preceding stabilization zone and post-reinforcing area include just from outside to inside
Phase supporting construction, reinforced concrete floor and secondary liner structure, the antidetonation shock attenuation area include from outside to inside preliminary bracing structure,
Rubber shock-absorbing layer and secondary liner structure, by by tunnel portal between the preceding stabilization zone, antidetonation shock attenuation area and post-reinforcing area
The anchor pole extended into tunnel is fixedly connected.
Further, the length of the preceding stabilization zone is 3 ~ 5m, and the length in the antidetonation shock attenuation area is 15 ~ 40m, is added after described
The length of Gu Qu is 3 ~ 5m.
Further, described anchor pole one end is anchored in the reinforced concrete floor of the preceding stabilization zone, and the other end passes through described
It is anchored in the reinforced concrete floor in post-reinforcing area after the rubber shock-absorbing floor in antidetonation shock attenuation area.
Compared with prior art, the invention has the benefit that earthquake load can effectively be absorbed, to play railway tunnel
The purpose of road especially railway tunnel Portal Section antidetonation shock attenuation, avoids earthquake territory railway tunnel structure from being likely to occur earthquake, in turn
Guarantee the operation security of earthquake territory railway tunnel.
Detailed description of the invention
Fig. 1 is that railway tunnel Portal Section shock resisting in earthquake territory constructs cross section composition schematic diagram.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, right below in conjunction with attached drawing and embodiment
The present invention is described in further detail.Described herein the specific embodiments are only for explaining the present invention, is not used to limit
Fixed invention.
As shown in Figs. 1-2, a kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure of the present embodiment, including by tunnel
Hole extends the preceding stabilization zone 5, antidetonation shock attenuation area 6 and post-reinforcing area 7 for being set in turn in tunnel inner wall, preceding stabilization zone into tunnel
5 length is 3 ~ 5m, and the length in the antidetonation shock attenuation area 6 is 15 ~ 40m, and the length in the post-reinforcing area 7 is 3 ~ 5m, preceding reinforcing
Area 5 and post-reinforcing area 7 include preliminary bracing structure 1, reinforced concrete floor 8 and secondary liner structure 3, preceding stabilization zone from outside to inside
5 can resist earthquake load；The antidetonation shock attenuation area 6 includes preliminary bracing structure 1, rubber shock-absorbing floor 2 and secondary from outside to inside
Liner structure 3, seismic stratum deformation and the energy that generates pass through the buffering of rubber shock-absorbing layer 2, are transmitted to secondary lining
Have very much when in structure 3 and significantly decays；Pass through between the preceding stabilization zone 5, antidetonation shock attenuation area 6 and post-reinforcing area 4
It is fixedly connected from the anchor pole 4 that tunnel portal extends into tunnel, specifically 4 one end of anchor pole steel for being anchored in the preceding stabilization zone 5
In reinforced concrete layer 8, the reinforcing bar that the other end is anchored in post-reinforcing area 7 after the rubber shock-absorbing floor 2 in the antidetonation shock attenuation area 6 is mixed
In solidifying soil layer 8, anchor pole 4 can effectively enhance the bending stiffness of railway tunnel Portal Section anti-seismic structure.
The building method of the present embodiment earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure, specific as follows:
S1, railway tunnel Portal Section Construction is carried out first, after laterally excavating 3 ~ 5m, apply preliminary bracing structure 1 and be used as preceding reinforcing
The first layer structure in area 5；
S2, it is based on S1, applies second layer structure of the reinforced concrete floor 8 of 10 ~ 15cm thickness as preceding stabilization zone 5, preliminary bracing
8 20 ~ 30cm of aggregate thickness of reinforced concrete floor of structure 1 and preceding stabilization zone 5；
S3, it is based on S2, after being laid with splash guard and geotextiles, the secondary liner structure 3 for applying preceding stabilization zone 5 is used as preceding stabilization zone 5
Third layer structure, usually 45cm, preceding 5 lateral length of stabilization zone is 3 ~ 5m；
S4, it is based on S3, the anchoring rod 4 in the reinforced concrete floor 8 of preceding stabilization zone 5,4 diameter of anchor pole is 32mm；
S5, it is based on S4, applies second layer structure of the rubber shock-absorbing floor 2 as antidetonation shock attenuation area 6 of 10 ~ 15cm thickness, antidetonation shock attenuation
2 20 ~ the 30cm of aggregate thickness of preliminary bracing structure 1 and rubber shock-absorbing floor in area 6, the lateral length in antidetonation shock attenuation area 6 are 15 ~ 40m；
S6, it is based on S5, after antidetonation shock attenuation area 6 is built, after continuing 3 ~ 5m of excavation, applies after preliminary bracing structure 1 is used as and add
Gu the first layer structure in area 7；Second layer structure of the reinforced concrete floor 8 as post-reinforcing area 7 of 10 ~ 15cm thickness is applied, it is rear to add
Gu the preliminary bracing structure 1 in area 7 and the 8 20 ~ 30cm of aggregate thickness of reinforced concrete floor in post-reinforcing area 7；It is laid with splash guard and soil
After work cloth, the third layer structure of the secondary liner structure 3 as post-reinforcing area 7 in post-reinforcing area 7 is applied, usually 45cm, it is rear to add
Gu the lateral length in area 7 is 3 ~ 5m；So far, the building of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure is completed.
After actual measurement, after using earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure of the invention, railway tunnel Portal Section
Each measuring point moment of flexure highest of structure can reduce by 63%, and strain highest can reduce by 43%, and antidetonation shock attenuation effect is obvious.
The limitation that technical solution of the present invention is not limited to the above specific embodiments, it is all to do according to the technique and scheme of the present invention
Technology deformation out, falls within the scope of protection of the present invention.
Claims (3)
1. a kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure, which is characterized in that including from tunnel portal into tunnel
Extend the preceding stabilization zone, antidetonation shock attenuation area and post-reinforcing area for being set in turn in tunnel inner wall, the preceding stabilization zone and post-reinforcing area
It include from outside to inside preliminary bracing structure, reinforced concrete floor and secondary liner structure, the antidetonation shock attenuation area is wrapped from outside to inside
Preliminary bracing structure, rubber shock-absorbing layer and secondary liner structure are included, between the preceding stabilization zone, antidetonation shock attenuation area and post-reinforcing area
By being fixedly connected from the anchor pole that tunnel portal extends into tunnel.
2. earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure according to claim 1, it is characterised in that: add before described
The length of Gu Qu is 3 ~ 5m, and the length in the antidetonation shock attenuation area is 15 ~ 40m, and the length in the post-reinforcing area is 3 ~ 5m.
3. earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure according to claim 1, it is characterised in that: the anchor pole
One end is anchored in the reinforced concrete floor of the preceding stabilization zone, after the other end passes through the rubber shock-absorbing floor in the antidetonation shock attenuation area
It is anchored in the reinforced concrete floor in post-reinforcing area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077045.1A CN109505621A (en) | 2019-01-27 | 2019-01-27 | A kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910077045.1A CN109505621A (en) | 2019-01-27 | 2019-01-27 | A kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure |
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| Publication Number | Publication Date |
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| CN109505621A true CN109505621A (en) | 2019-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910077045.1A Pending CN109505621A (en) | 2019-01-27 | 2019-01-27 | A kind of earthquake territory railway tunnel Portal Section antidetonation shock attenuation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529143A (en) * | 2019-09-25 | 2019-12-03 | 浙江海洋大学 | For enhancing the component of tunnel shock resistance |
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|---|---|---|---|---|
| CN101225743A (en) * | 2008-02-04 | 2008-07-23 | 西南交通大学 | Method for building tunnel shock-absorbing structure in earthquake region |
| CN101550831A (en) * | 2009-04-09 | 2009-10-07 | 西南交通大学 | Shock resisting and reducing structure spanning movable fault tunnel |
| CN103195447A (en) * | 2013-04-08 | 2013-07-10 | 西南交通大学 | Construction method of quake-proof tunnel structure penetrating through flexible fracture zone |
| FR2988770A1 (en) * | 2012-04-03 | 2013-10-04 | Assistance Et Conseil Ind | Damping system for damping convergence of ground exerted on underground tunnel, has coating covering external wall with tunnel formed by segments and located inside cavity dug into ground, and comprising devices provided with emerging holes |
| CN106593465A (en) * | 2017-01-17 | 2017-04-26 | 中铁十六局集团第四工程有限公司 | Structure for improving shock resistance and shock absorption capacity of tunnel lining and construction method |
| CN107842372A (en) * | 2017-11-22 | 2018-03-27 | 浙江海洋大学 | A kind of tunnel structure of high-strength anti-seismic |
-
2019
- 2019-01-27 CN CN201910077045.1A patent/CN109505621A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225743A (en) * | 2008-02-04 | 2008-07-23 | 西南交通大学 | Method for building tunnel shock-absorbing structure in earthquake region |
| CN101550831A (en) * | 2009-04-09 | 2009-10-07 | 西南交通大学 | Shock resisting and reducing structure spanning movable fault tunnel |
| FR2988770A1 (en) * | 2012-04-03 | 2013-10-04 | Assistance Et Conseil Ind | Damping system for damping convergence of ground exerted on underground tunnel, has coating covering external wall with tunnel formed by segments and located inside cavity dug into ground, and comprising devices provided with emerging holes |
| CN103195447A (en) * | 2013-04-08 | 2013-07-10 | 西南交通大学 | Construction method of quake-proof tunnel structure penetrating through flexible fracture zone |
| CN106593465A (en) * | 2017-01-17 | 2017-04-26 | 中铁十六局集团第四工程有限公司 | Structure for improving shock resistance and shock absorption capacity of tunnel lining and construction method |
| CN107842372A (en) * | 2017-11-22 | 2018-03-27 | 浙江海洋大学 | A kind of tunnel structure of high-strength anti-seismic |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529143A (en) * | 2019-09-25 | 2019-12-03 | 浙江海洋大学 | For enhancing the component of tunnel shock resistance |
| CN110529143B (en) * | 2019-09-25 | 2021-04-23 | 浙江海洋大学 | Component for enhancing shock resistance of tunnel |
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Application publication date: 20190322 |
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