CN203394544U - Large-span mountain tunnel lagging jack with supporting legs - Google Patents
Large-span mountain tunnel lagging jack with supporting legs Download PDFInfo
- Publication number
- CN203394544U CN203394544U CN201320472026.7U CN201320472026U CN203394544U CN 203394544 U CN203394544 U CN 203394544U CN 201320472026 U CN201320472026 U CN 201320472026U CN 203394544 U CN203394544 U CN 203394544U
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- CN
- China
- Prior art keywords
- lagging jack
- bow member
- mountain tunnel
- span mountain
- tunnel
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Abstract
The utility model relates to a large-span mountain tunnel lagging jack with supporting legs. The large-span mountain tunnel lagging jack comprises a lagging jack ring. The lagging jack ring consists of a plurality of lagging jack units which are successively connected to one another end to end. The large-span mountain tunnel lagging jack is characterized in that two sides of the lagging jack ring extend to the bottom to form the supporting legs. A supporting steel plate is arranged on the bottoms of the supporting legs. The thickness of the supporting steel plate is 2cm. The large-span mountain tunnel lagging jack with the supporting legs can bear stress and pulling force in a construction process like a profile steel lagging jack; stress conversion of the lagging jack can be realized in different construction stages; the safety on construction of a tunnel is improved; and moreover, the large-span mountain tunnel lagging jack is convenient to construct, and the integrality of the lagging jack ring is effectively guaranteed.
Description
Technical field
The utility model relates to a kind of large span mountain tunnel bow member with spike, the bow member of especially a kind of applicable large span (Four-Lane Road) mountain tunnel.
Background technology
In recent years, along with the enhancing of national society's economic strength and the needs of Regional Economic Development, land transportation increases very swift and violent, and original railway and highway system more and more can not meet instructions for use.In order to alleviate all kinds of means of transportation overload operations, the problem demanding prompt solutions such as traffic accident, traffic jam and traffic nuisance take place frequently, since reform and opening-up, China classifies communications and transportation as one of strategic emphasis of the national economic development, design and construction large quantities of highway transportation systems.In these highway transportation systems, abandoned gradually mountain terrain sky way, but adopted a large amount of construction of tunnel to pass through the mountain ridge.
Because at present highway tunnel span is increasing, the highway tunnel with four lanes up till now from two-lane tunnel in the past, tunnel cross-section more trends towards flattening, and surrouding rock deformation is difficult to be controlled, and design and construction technology is more complicated.The shaped steel arch of the first lining cutting in tunnel plays the important and pivotal role in constructing tunnel, and it has born the pressure from surrounding rock before first lining cutting does not form, and bears follow-up pressure from surrounding rock together with forming steel reinforced concrete with first lining concrete.
Along with the flattening of tunnel cross-section, shaped steel arch is stressed becoming increasingly complex in work progress, and pulling force and pressure alternately change.Tunnel loading characteristic is stage by stage.After section has just excavated, first need the vertical upper bow member of frame, now bow member is a type frame construction, need to be located on rock mass; Then after inverted arch has excavated, frame founds inverted arch bow member, and bow member has formed closed-loop.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of large span mountain tunnel bow member with spike is provided, take into account the stressed and pulling force of shaped steel arch in work progress, solve the stressed conversion of built under the different construction stages, the safety that improves constructing tunnel.
The technical scheme providing according to the utility model, a kind of large span mountain tunnel bow member with spike, comprises the bow member ring that the bow member unit that connected successively by a plurality of head and the tail forms, feature is: two side direction bow member rings bottoms of described bow member ring extend to form spike.
Bottom at described spike arranges supporting steel plate.
The thickness of described supporting steel plate is 2cm.
The large span mountain tunnel bow member with spike described in the utility model is taken into account the stressed and pulling force of shaped steel arch in work progress, solves the stressed conversion of built under the different construction stages, the safety that improves constructing tunnel; In addition, the utility model is constructed more for convenience, has effectively guaranteed the globality of bow member ring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
As shown in Figure 1: described in there is support angle large span mountain tunnel bow member comprise bow member unit 1, spike 2, supporting steel plate 3 etc.
As shown in Figure 1, the utility model comprises the bow member ring that the bow member unit 1 that connected successively by a plurality of head and the tail forms, and two side direction bow member rings bottoms of bow member ring extend to form spike 2, in the bottom of spike 2, supporting steel plate 3 are set, and the thickness of supporting steel plate 3 is 2cm.
The utility model can be the efficient solution stressed conversion of bow member under the different construction stages of determining.Because of the tunnel cross-section excavation initial stage, bow member is stressed larger, and vertical supporting is extremely important, and the design of spike can provide vertical supporting well.In order to facilitate the installation of inverted arch bow member, generally adopt at bow member ring both sides spare interface, by factory, this spare interface place welding spike husband, be processed to form, and adopt node bolt to connect, construction more for convenience, has also effectively guaranteed the globality of bow member ring, stressed clear and definite.
Claims (3)
1. a large span mountain tunnel bow member with spike, comprises the bow member ring that the bow member unit (1) that connected successively by a plurality of head and the tail forms, and it is characterized in that: two side direction bow member rings bottoms of described bow member ring extend to form spike (2).
2. the large span mountain tunnel bow member with spike as claimed in claim 1, is characterized in that: in the bottom of described spike (2), supporting steel plate (3) is set.
3. the large span mountain tunnel bow member with spike as claimed in claim 2, is characterized in that: the thickness of described supporting steel plate (3) is 2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472026.7U CN203394544U (en) | 2013-08-02 | 2013-08-02 | Large-span mountain tunnel lagging jack with supporting legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320472026.7U CN203394544U (en) | 2013-08-02 | 2013-08-02 | Large-span mountain tunnel lagging jack with supporting legs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394544U true CN203394544U (en) | 2014-01-15 |
Family
ID=49906080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320472026.7U Expired - Lifetime CN203394544U (en) | 2013-08-02 | 2013-08-02 | Large-span mountain tunnel lagging jack with supporting legs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401617A (en) * | 2016-09-12 | 2017-02-15 | 中铁十九局集团第七工程有限公司 | Steel arch and joint thereof |
| CN108868815A (en) * | 2018-08-20 | 2018-11-23 | 云南省红河州水利水电勘察设计研究院 | A kind of support system excavated for tunnel |
-
2013
- 2013-08-02 CN CN201320472026.7U patent/CN203394544U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401617A (en) * | 2016-09-12 | 2017-02-15 | 中铁十九局集团第七工程有限公司 | Steel arch and joint thereof |
| CN106401617B (en) * | 2016-09-12 | 2019-02-05 | 中铁十九局集团第七工程有限公司 | Steel arch-shelf and its connector |
| CN108868815A (en) * | 2018-08-20 | 2018-11-23 | 云南省红河州水利水电勘察设计研究院 | A kind of support system excavated for tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU ZHONGSHE GROUP CO., LTD. Free format text: FORMER NAME: JIANGSU ZHONGSHE ENGINEERING CONSULTANCY GROUP CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Jinxi road Binhu District 214125 Jiangsu city of Wuxi province No. 100 Patentee after: JIANGSU ZHONGSHE GROUP CO.,LTD. Address before: 214072, 2188 West Avenue, Binhu District, Jiangsu, Wuxi, Taihu Patentee before: JIANGSU ZHONGSHE ENGINEERING CONSULTANCY GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |