CN206205908U - A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform - Google Patents

A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform Download PDF

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Publication number
CN206205908U
CN206205908U CN201620618365.5U CN201620618365U CN206205908U CN 206205908 U CN206205908 U CN 206205908U CN 201620618365 U CN201620618365 U CN 201620618365U CN 206205908 U CN206205908 U CN 206205908U
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CN
China
Prior art keywords
steel
bow
channel
tunnel
country rock
Prior art date
Application number
CN201620618365.5U
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Chinese (zh)
Inventor
史彦文
韩常领
徐智
杨绍战
孙海东
寇宝文
Original Assignee
中交第一公路勘察设计研究院有限公司
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Priority to CN201620618365.5U priority Critical patent/CN206205908U/en
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Publication of CN206205908U publication Critical patent/CN206205908U/en

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Abstract

The utility model is related to a kind of channel-section steel bow member joist for preventing tunnel subsidence to deform., there is the drawbacks such as working procedure is numerous and diverse, progress is slow, construction costs is high in the tunnel deformation subsidence control method of the geology such as existing soft rock or ultimate soft rock.The utility model includes by the more piece arc I-steel ring bow member that constitutes of splicing, and bow member be arranged in parallel many Pin along tunnel direction;The joint of two adjacent section I-steel is provided perpendicular to the channel-section steel of I-steel, and channel-section steel two ends are fixed on along two adjacent Pin bow members of tunnel direction;At the bow member I-shaped steel joint of tunnel excavation top bar and middle step intersection, reserving hole is provided with the channel-section steel at this, to the lock foot anchoring stock that pipe form is set in country rock at reserving hole.The utility model is transmitted the pressure on ring steel arch-shelf to country rock deep by channel-section steel, lock foot anchoring stock, mitigates the load of bow member, and can reinforce country rock, prevents country rock avalanche when excavating of getting out of a predicament or an embarrassing situation, and is prevented bow member from extruding and is come off and excessive sedimentation.

Description

A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform

Technical field

The utility model is related to traffic engineering technical field, and in particular to a kind of channel-section steel bow member of prevention tunnel subsidence deformation Joist.

Background technology

In the very poor tunnel of geology, tunnel often faces the puzzlement of large deformation.Excessive consolidating settlement is not only resulted in Limit is invaded in supporting, even results in tunnel cave, jeopardizes the safety of workmen, increases construction costs, influences project progress.Therefore, Control tunnel deformation sedimentation is the key link in the very poor constructing tunnel of the geology such as soft rock or ultimate soft rock.At present, tunnel control Sedimentation method mainly has the interim inverted arch of increase, using double side wall or unilateral wall partial excavation method etc..Although these measures can be preferably The sedimentation and deformation in ground control tunnel, but compared with bench cut method, all has that working procedure is numerous and diverse, progress is slow, construction costs is high Etc. drawback.

The content of the invention

The purpose of this utility model is to provide a kind of channel-section steel bow member joist for preventing tunnel subsidence to deform, and effectively protection is enclosed Rock, coordinates benching tunnelling method to excavate, it is adaptable to the large cross-section tunnel of geology extreme difference.

The technical scheme that the utility model is used for:

A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform, it is characterised in that:

Including by the more piece arc I-steel ring bow member that constitutes of splicing, bow member be arranged in parallel many Pin along tunnel direction;

The joint of two adjacent section I-steel is provided perpendicular to the channel-section steel of I-steel, and channel-section steel two ends are fixed on along tunnel On two adjacent Pin bow members of direction.

I-steel is fixed in channel-section steel end by steel plate and bolt.

At the bow member I-shaped steel joint of tunnel excavation top bar and middle step intersection, it is provided with the channel-section steel at this reserved Hole, to the lock foot anchoring stock that pipe form is set in country rock at reserving hole.

The utility model has advantages below:

(1)Material processing is simple:Channel-section steel, lock foot anchoring stock are in factory or the concentrated processing of building site, and the raw material of purchase are simple Processing can be used, without special technical requirements.

(2)Working procedure is simple:Channel-section steel joist mounting process is identical with bow member installation method, and lock foot anchoring stock is constructed and tunnel System anchor bolt construction technology is identical, without particular/special requirement.

(3)Settlement Control effect is good:The pressure on ring steel arch-shelf is passed to country rock deep by channel-section steel, lock foot anchoring stock Pass, mitigate the load of bow member, and country rock can be reinforced, prevent country rock avalanche when excavating of getting out of a predicament or an embarrassing situation, prevent bow member from extruding and come off and mistake Big sedimentation.

Brief description of the drawings

Fig. 1 is stereogram of the present utility model;

Fig. 2 is channel-section steel longitudinal direction joist plan view;

Fig. 3 is channel-section steel longitudinal direction joist top view;

Fig. 4 is channel-section steel longitudinal direction joist application drawing in tunnel.

Description of reference numerals is as follows:

1- bow members, 2- channel-section steels, 3- lock foot anchoring stocks.

Specific embodiment

The utility model is described in detail with reference to specific embodiment.

A kind of channel-section steel bow member joist of prevention tunnel subsidence deformation that the utility model is related to, is used in tunnel A kind of steelframe combination, it is cheap, be conducive to mechanized construction, operation is easy, effectively protects country rock, and cooperation is opened using benching tunnelling method Dig, the bow member joint of top bar arch springing in tunnel, between every two Pin bow members, using a section channel-section steel, connected by bolt and bow member Connect, two lock foot anchoring stocks of embedded country rock are provided with the middle of channel-section steel, for fixing channel-section steel and reinforcing country rock, prevent bow member from settling and become Shape.Lock foot anchoring stock uses steel pipe, steel pipe injecting paste material to use cement mortar or mortar.

Concrete structure is:

Including by the more piece arc I-steel ring bow member 1 that constitutes of splicing, bow member 1 be arranged in parallel many Pin along tunnel direction. The joint of two adjacent section I-steel is provided perpendicular to the channel-section steel 2 of I-steel, and the two ends of channel-section steel 2 are fixed on along tunnel direction phase On two adjacent Pin bow members 1, I-steel is fixed in the end of channel-section steel 2 by steel plate and bolt.Tunnel excavation top bar and middle step are handed over At the I-shaped steel joint of bow member 1 at boundary, reserving hole is provided with the channel-section steel 2 at this, to having been set in country rock at reserving hole The lock foot anchoring stock 3 of pipe form.

Material described in the utility model includes channel-section steel and steel pipe.In order to ensure the connection of part, in addition it is also necessary to bolt and steel plate, These materials are typically all what tunnel construction site was readily obtained.The specification of channel-section steel determines that it is highly according to the size of steel arch-shelf The height of bow member is greater than, to ensure that bow member can be installed into channel-section steel, for example with I22b bow members, bow member is highly 220mm, then extremely It is few to need the channel-section steel that height is 280mm.The specification of steel pipe according to field geology situation select, geology extreme difference, can using caliber compared with Big steel pipe such as 76 ~ φ of φ 89mm steel pipes, length can use 6m.

During construction:

Step in excavation, step bow member in installation.In the joint of upper and lower two section bow members, centre is installed one and saves channel-section steel, groove The length of steel is equal to the spacing between two ring bow members.Bow member, channel-section steel use steel plate bolt connection.After channel-section steel is installed, Reserved eyelet from channel-section steel, is punched using air drill or rig to country rock, steel pipe is installed, by slip casting machine to steel pipe slip casting. So far, the joist installation of channel-section steel longitudinal direction, then recycles operation.

Content of the present utility model is not limited to cited by embodiment, and those of ordinary skill in the art are new by reading this practicality Type specification and any equivalent conversion taken technical solutions of the utility model, are claim institute of the present utility model Cover.

Claims (1)

1. the channel-section steel bow member joist that a kind of prevention tunnel subsidence deforms, it is characterised in that:
Including the bow member being made up of the splicing of more piece arc I-steel ring(1), bow member(1)It is be arranged in parallel many Pin along tunnel direction;
The joint of two adjacent section I-steel is provided perpendicular to the channel-section steel of I-steel(2), channel-section steel(2)Two ends are fixed on along tunnel Two adjacent Pin bow members of road direction(1)On;
Channel-section steel(2)I-steel is fixed in end by steel plate and bolt;
The bow member of tunnel excavation top bar and middle step intersection(1)At I-shaped steel joint, the channel-section steel at this(2)On be provided with it is pre- Box out hole, to the lock foot anchoring stock that pipe form is set in country rock at reserving hole(3).
CN201620618365.5U 2016-06-22 2016-06-22 A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform CN206205908U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620618365.5U CN206205908U (en) 2016-06-22 2016-06-22 A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620618365.5U CN206205908U (en) 2016-06-22 2016-06-22 A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform

Publications (1)

Publication Number Publication Date
CN206205908U true CN206205908U (en) 2017-05-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620618365.5U CN206205908U (en) 2016-06-22 2016-06-22 A kind of channel-section steel bow member joist for preventing tunnel subsidence to deform

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150533A (en) * 2015-03-24 2016-11-23 兰州交通大学 A kind of loess tunnel vertical deformation control structure and apply method
CN107387129A (en) * 2017-07-17 2017-11-24 交通运输部公路科学研究所 A kind of rapid constructing method for controlling the deformation of tunnel extrusion pressing type
CN108386212A (en) * 2018-03-13 2018-08-10 中水北方勘测设计研究有限责任公司 Connection method of the tunnel support between steel arch-shelf unit
CN109322687A (en) * 2018-10-26 2019-02-12 林翠英 A kind of soft rock tunnel, which is got out of a predicament or an embarrassing situation, excavates the control method that anti-settling restrains hydraulic collateral support arrangement
CN109555542A (en) * 2018-11-22 2019-04-02 成都理工大学 A kind of contracting I-steel arch and its installation method based on edge of a wing two sides kidney slot
CN109736857A (en) * 2019-01-17 2019-05-10 中交二公局东萌工程有限公司 A kind of spliced steel arch-shelf and preparation method thereof
CN110185477A (en) * 2019-04-23 2019-08-30 广东省交通规划设计研究院股份有限公司 Tunnel support structure and tunnel support construction method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150533A (en) * 2015-03-24 2016-11-23 兰州交通大学 A kind of loess tunnel vertical deformation control structure and apply method
CN107387129A (en) * 2017-07-17 2017-11-24 交通运输部公路科学研究所 A kind of rapid constructing method for controlling the deformation of tunnel extrusion pressing type
CN107387129B (en) * 2017-07-17 2020-01-17 中路高科交通检测检验认证有限公司 Rapid construction method for controlling extrusion type deformation of tunnel
CN108386212B (en) * 2018-03-13 2019-05-28 中水北方勘测设计研究有限责任公司 Connection method of the tunnel support between steel arch-shelf unit
CN108386212A (en) * 2018-03-13 2018-08-10 中水北方勘测设计研究有限责任公司 Connection method of the tunnel support between steel arch-shelf unit
CN109322687A (en) * 2018-10-26 2019-02-12 林翠英 A kind of soft rock tunnel, which is got out of a predicament or an embarrassing situation, excavates the control method that anti-settling restrains hydraulic collateral support arrangement
CN109555542A (en) * 2018-11-22 2019-04-02 成都理工大学 A kind of contracting I-steel arch and its installation method based on edge of a wing two sides kidney slot
CN109736857A (en) * 2019-01-17 2019-05-10 中交二公局东萌工程有限公司 A kind of spliced steel arch-shelf and preparation method thereof
CN110185477A (en) * 2019-04-23 2019-08-30 广东省交通规划设计研究院股份有限公司 Tunnel support structure and tunnel support construction method

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