CN202836999U - Drawing apparatus for joint bar in hand hole of tunnel - Google Patents
Drawing apparatus for joint bar in hand hole of tunnel Download PDFInfo
- Publication number
- CN202836999U CN202836999U CN 201220395692 CN201220395692U CN202836999U CN 202836999 U CN202836999 U CN 202836999U CN 201220395692 CN201220395692 CN 201220395692 CN 201220395692 U CN201220395692 U CN 201220395692U CN 202836999 U CN202836999 U CN 202836999U
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- joint bar
- hole
- substrate
- tunnel
- retaining ring
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Abstract
The utility model provides a drawing apparatus for a joint bar in a hand hole of a tunnel, which relates to the field of tunnel construction. Four corners of a substrate (1) are respectively provided with at least one screw hole; each screw hole is connected with an outside thread at the middle part of a pillar bolt (2); two ends of each pillar bolt are respectively provided with a supporting end (8) and a screwing end (3); the central part of the substrate is provided with a joint bar hole (6), and a joint bar locking ring (10) is correspondingly arranged at the upper part of the joint bar hole; two sides of the joint bar locking ring are respectively provided with a limited block; recessed grooves outwardly extending and mutually corresponding are respectively arranged at the lower parts of the limited blocks close to the substrate; the two recessed grooves and the upper parts of the limited blocks form a T-shaped groove (12) toward an opposite side, and the joint bar locking ring is movably arranged in the T-shaped groove. The drawing apparatus provided by the utility model has the characteristics of simple and fast operation, convenient maintenance, strong applicability and the like; and with the drawing apparatus, construction efficiency is substantially improved and cost is saved.
Description
[technical field]
The utility model relates to the tunnel construction field, is specifically related to a kind of tunnel hand hole joint bar draw-off gear.
[background technology]
Known, wear yellow tunnel and adopt the wholecircle Section Design, the internal diameter of tunnel is 7.0m, the external diameter of tunnel is 8.7m, tunnel lining is by inside and outside two-layer the composition, outer by 7 reinforced concrete prefabricated section of jurisdiction staggered joint erections, the thick 40cm in its section of jurisdiction, ring width 1.6m, owing to wearing the hydraulic pressure that yellow tunnel will bear maximum 0.67MPa, so to hold the Water structure requirement in order satisfying to have to press, after finishing the outer lining pipe sheet assembling, in Shield tunnel, to have designed again inner lining structure, inner lining structure is the post-tension prestressed concrete, tunnel lining adopts the C40.W12.F200 prestressed concrete, and thick 45cm, standard section length are 9.6m; In order to verify the opening degree under 0.67Mpa hydraulic pressure and stressing conditions between section of jurisdiction outer lining and the concrete lining, adopt the high-grade concrete backfill at tunnel section of jurisdiction hand hole, arrange pre-doweling in the hand hole of section of jurisdiction simultaneously, be connected with the tunnel lining steel reinforcement cage.
And in order to guarantee that tunnel can reach designing requirement, the workmen tends in work progress the pre-buried hand hole joint bar pull-out test of sampling, and then whether the backfill concrete can satisfy the joint bar anchoring effect in the checking hand, because the section of jurisdiction hand hole is many in the tunnel, and the joint bar anchorage depth is little, so joint bar pull-out test process is had strict requirement, and existing test method is:
Method one: by making a steel plate, adopt the artificial lifting jack that supports the fixing anchor bar drawing instrument, the direction of regulating again lifting jack and anchor pole or other pre-buried rod member, direction are carried out drawing after regulating unanimously again.This kind method is carried out drawing, construction is difficulty comparatively, when construction, need be equipped with several personnel and carry out supporting steel plate, then after anchor pole is packed lifting jack into, vertical with lifting jack by regulating steel plate at four jiaos of increases of steel plate cushion block, after lifting jack is stressed, begin again drawing, in the work progress, operation easier is large, and the rockbolt stress direction is wayward, and speed of application is slow;
Method two: by the rockbolt installation face being cut or polishing, make and lifting jack is installed behind anchor pole direction and the installed surface perpendicular direction again and is carried out drawing, this kind method is favourable for anchor pole or the pre-buried rod member of preliminary bracing face, but the strict control of construction surface needs cuts or polishes, and poor for applicability, the drawing construction more to quantity or building surface must not destroy, the method operating difficulties has destruction to facade and anchorage depth.
Adopt above-mentioned test method to have inefficiency, the drawbacks such as complicated operation, do pull-out test owing to requiring every standard paragraphs to choose 3 groups of joint bars at the crown position at the trial, single joint bar design pulling capacity is 86.6KN, necessary strict guarantee joint bar and anchor rod drawing instrument are on same straight line when pull-out test, this test drawing amount is large, and anchor rod drawing instrument is difficult for fixing at the trial, topmost above-mentioned test method affects the normal construction of liner, for this reason, joint bar draw-off gear and Hubbing method are improved the technical barrier that has just become those skilled in the art anxious to be resolved.
[summary of the invention]
In order to overcome the deficiency in the background technology, the utility model provides a kind of tunnel hand hole joint bar draw-off gear, the utility model is by arranging carrying bolt at substrate four jiaos, and by the top in the joint bar hole joint bar retaining ring is set, speed and security to hand hole joint bar pull-out test have greatly been improved, the utlity model has the characteristics such as simple to operate, quick, that maintaining convenient, applicability is strong, greatly improved operating efficiency by enforcement of the present utility model, saved cost.
For achieving the above object, the utility model adopts following technical scheme:
A kind of tunnel hand hole joint bar draw-off gear, comprise substrate, carrying bolt and joint bar retaining ring, four jiaos at substrate are respectively equipped with at least one hole, be connected in described each hole on the external thread at carrying bolt middle part, the two ends of each carrying bolt are set to respectively support end and screw end, the middle part of described substrate is provided with at least one joint bar hole, top in the described joint bar of correspondence hole is provided with the joint bar retaining ring, the both sides of described joint bar retaining ring are respectively equipped with limited block, described limited block bottom is provided with respectively near the substrate place and stretches out and mutual corresponding recessed groove, T-shaped groove is formed to the opposite at the top by two recessed grooves and limited block, and the activity in T-shaped groove of wherein said joint bar retaining ring arranges and forms hand hole joint bar draw-off gear.
Described tunnel hand hole joint bar draw-off gear, described silk hole forms the silk hole or by at substrate four jiaos unthreaded hole being set, forms a silk hole on the top of described unthreaded hole by welding or silk connected nut for four jiaos of direct drilling and tappings at substrate.
Described tunnel hand hole joint bar draw-off gear, the profile of described substrate are triangle or quadrilateral or ellipse or circle or sexangle or polygon.
Described tunnel hand hole joint bar draw-off gear, the replacing structure of described T-shaped groove are to be respectively equipped with angle steel in the both sides of joint bar retaining ring, and are formed T-shaped groove or T-shaped groove directly directly is set on substrate by described two angle steel.
Described tunnel hand hole joint bar draw-off gear is respectively equipped with reinforcement on the substrate in the described two angle steel outside.
Described tunnel hand hole joint bar draw-off gear, described joint bar retaining ring is the L-type structure, is provided with circle or ellipse or polygonal holes on the base of joint bar retaining ring, is provided with a hole at the side of joint bar retaining ring, described silk is provided with clamping screw in the hole.
Described tunnel hand hole joint bar draw-off gear, described screw end be shaped as two planes that are arranged in parallel or quadrilateral or hexagon or polygon.
Described tunnel hand hole joint bar draw-off gear, the two ends of described substrate are respectively equipped with at least one technology groove, described each technology groove be shaped as semicircle or circle or ellipse or polygon or square.
Described tunnel hand hole joint bar draw-off gear, described joint bar hole be shaped as circle or ellipse or polygon or Long Circle.
Owing to adopting aforesaid technical scheme, the utlity model has following beneficial effect:
A kind of tunnel hand hole joint bar draw-off gear described in the utility model, the utility model guarantees that by at substrate four jiaos carrying bolt being set substrate can adapt to the pre-doweling under the different angle, guarantee that simultaneously lifting jack and pre-doweling in the anchor rod drawing instrument is on same straight line, the utility model also arranges the joint bar retaining ring by the top in the joint bar hole pre-doweling and substrate is fixed, speed and security to hand hole joint bar pull-out test have greatly been improved, the utlity model has simple to operate, fast, maintaining is convenient, the characteristics such as applicability is strong, be implemented under the prerequisite that does not affect facade and anchorage depth as long as a people just can finish experiment by of the present utility model, greatly improve operating efficiency, reduced construction cost.
[description of drawings]
Fig. 1 is the utility model perspective view in use;
Fig. 2 is assembly relation structural representation of the present utility model;
Among the figure: 1, substrate; 2, carrying bolt; 3, screw end; 4, pre-doweling; 5, technology groove; 6, joint bar hole; 7, joint bar drawing instrument; 8, support end; 9, nut; 10, joint bar retaining ring; 11, clamping screw; 12, T-shaped groove; 13, reinforcement; 14, angle steel.
[embodiment]
Can explain in more detail the utility model by the following examples, the utility model is not limited to the following examples;
1～2 described a kind of tunnel hand hole joint bar draw-off gear by reference to the accompanying drawings, comprise substrate 1, carrying bolt 2 and joint bar retaining ring 10, the profile of described substrate 1 is triangle or quadrilateral or ellipse or circle or sexangle or polygon, provide the fixed operation platform by substrate 1 for joint bar drawing instrument 7, its effect is to provide support job platform during to the lifting jack operation in the joint bar drawing instrument, the two ends of described substrate 1 are respectively equipped with at least one technology groove 5, described each technology groove 5 be shaped as semicircle or circle or ellipse or polygon or square, four jiaos at substrate 1 are respectively equipped with at least one hole, described silk hole forms the silk hole for four jiaos of direct drilling and tappings at substrate 1 or by at substrate 1 four jiaos unthreaded hole being set, top at described unthreaded hole forms the silk hole by welding or silk connected nut 9, in each hole, be connected on the external thread at carrying bolt 2 middle parts, the two ends of each carrying bolt 2 are set to respectively support end 8 and screw end 3, described screw end 3 be shaped as two planes that are arranged in parallel or quadrilateral or hexagon or polygon, the middle part of described substrate 1 is provided with at least one joint bar hole 6, described joint bar hole 6 be shaped as circle or ellipse or polygon or Long Circle, top in the described joint bar of correspondence hole 6 is provided with joint bar retaining ring 10, joint bar retaining ring 10 is the L-type structure, be provided with circle or ellipse or polygonal holes on the base of joint bar retaining ring 10, side in joint bar retaining ring 10 is provided with a hole, described silk is provided with clamping screw 11 in the hole, the both sides of described joint bar retaining ring 10 are respectively equipped with limited block, described limited block bottom is provided with respectively near substrate 1 place and stretches out and mutual corresponding recessed groove, T-shaped groove 12 is formed to the opposite at the top by two recessed grooves and limited block, the replacing structure of described T-shaped groove 12 is for being respectively equipped with angle steel 14 in the both sides of joint bar retaining ring 10, and form T-shaped groove 12 or T-shaped groove 12 directly directly is set on substrate 1 by described two angle steel 14, wherein the effect of T-shaped groove 12 is to provide the location for joint bar retaining ring 10, be respectively equipped with reinforcement 13 on the substrate 1 in described two angle steel 14 outsides, wherein said joint bar retaining ring 10 arranges in T-shaped groove 12 interior activities and forms hand hole joint bar draw-off gear.
Implement the Hubbing method of a kind of tunnel hand hole joint bar draw-off gear of the present utility model, the first step is fixed substrate 1, at first regulate in advance the carrying bolt 2 that arranges on 1 four jiaos of the substrates according to the shape of experiment position, namely hold 3 by screwing screwing of carrying bolt 2 one end settings, make the support end 8 of carrying bolt 2 other end settings near the joint bar installed surface, then the pre-doweling 4 that will select the experiment position passes joint bar retaining ring 10 and the joint bar hole 6 in the T-shaped groove 12 on the substrate 1 successively, and by the clamping screw 11 on the joint bar retaining ring 10 pre-doweling 4 and substrate 1 are fixed, subsequently joint bar drawing instrument 7 is fixed to the end of pre-doweling 4; Second step is regulated substrate 1, at first observe the lifting jack in the joint bar drawing instrument 7 whether vertical tight with applying with the plane of substrate 1, not tight such as out of plumb or applying, can regulate by the carrying bolt 2 that arranges on 1 four jiaos of the substrates, until vertical tight with applying, can pressurize this moment to joint bar drawing instrument 7, namely unclamps the clamping screw 11 on the joint bar retaining ring 10 after the lifting jack in the joint bar drawing instrument 7 is stressed; The 3rd step was carried out pull-out test, namely opened joint bar drawing instrument 7, and the drawing experiment to the hand hole joint bar is carried out in pressurization to the lifting jack in the joint bar drawing instrument 7.
The points for attention of the utility model in work progress are:
(1) should notice that the clamping screw 11 on the T-shaped groove 12 interior joint bar retaining rings 10 installs accurately during installation base plate 1, and clamping screw 11 screw mandrels should be back-outed all;
(2) lifting jack in the joint bar drawing instrument 7 and substrate 1 should check whether clamping screw 11 is tightened fixedly the time, prevent that substrate 1 from dropping;
(3) reinforcement workmen's awareness of safety is carried out operation safety training before the hilllock, must wear the protective articless such as safety helmet before marching into the arena.
A kind of tunnel hand hole joint bar draw-off gear described in the utility model is not only applicable to section of jurisdiction hand hole joint bar pull-out test, is equally applicable to the drawing experiment of pull-out test and the pre-buried rod member of buildings of tunnel anchor pole.
The utility model does not describe part in detail and is prior art.
The embodiment that selects in this article for open the purpose of this utility model currently thinks to suit that still, will be appreciated that, the utility model is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and the invention scope.
Claims (1)
1. tunnel hand hole joint bar draw-off gear, comprise substrate (1), carrying bolt (2) and joint bar retaining ring (10), it is characterized in that: four jiaos at substrate (1) are respectively equipped with at least one hole, be connected in described each hole on the external thread at carrying bolt (2) middle part, the two ends of each carrying bolt (2) are set to respectively support end (8) and screw end (3), the middle part of described substrate (1) is provided with at least one joint bar hole (6), be provided with joint bar retaining ring (10) on the top in the described joint bar of correspondence hole (6), the both sides of described joint bar retaining ring (10) are respectively equipped with limited block, described limited block bottom is located to be provided with respectively near substrate (1) and is stretched out and mutual corresponding recessed groove, T-shaped groove (12) is formed to the opposite at the top by two recessed grooves and limited block, and wherein said joint bar retaining ring (10) activity in T-shaped groove (12) arranges and forms hand hole joint bar draw-off gear.
2, tunnel hand hole joint bar draw-off gear according to claim 1, it is characterized in that: described silk hole forms the silk hole or by at substrate (1) four jiaos unthreaded hole being set, forms a hole on the top of described unthreaded hole by welding or a silk connected nut (9) for four jiaos of direct drilling and tappings at substrate (1).
3, the described tunnel hand hole of arbitrary claim joint bar draw-off gear according to claim 1 and 2, it is characterized in that: the profile of described substrate (1) is ellipse or circle or polygon.
4, tunnel hand hole joint bar draw-off gear according to claim 1, it is characterized in that: the replacing structure of described T-shaped groove (12) is to be respectively equipped with angle steel (14) in the both sides of joint bar retaining ring (10), and is formed T-shaped groove (12) or T-shaped groove (12) directly directly is set on substrate (1) by described two angle steel (14).
5, tunnel hand hole joint bar draw-off gear according to claim 4 is characterized in that: be respectively equipped with reinforcement (13) on the substrate (1) in described two angle steel (14) outside.
6, tunnel hand hole joint bar draw-off gear according to claim 1, it is characterized in that: described joint bar retaining ring (10) is the L-type structure, be provided with circle or ellipse or polygonal holes on the base of joint bar retaining ring (10), side in joint bar retaining ring (10) is provided with a hole, and described silk is provided with clamping screw (11) in the hole.
7, tunnel hand hole joint bar draw-off gear according to claim 1 is characterized in that: described screw end (3) be shaped as two planes that are arranged in parallel or quadrilateral or hexagon or polygon.
8, tunnel hand hole joint bar draw-off gear according to claim 1, it is characterized in that: the two ends of described substrate (1) are respectively equipped with at least one technology groove (5), described each technology groove (5) be shaped as semicircle or circle or ellipse or polygon or square.
9, tunnel hand hole joint bar draw-off gear according to claim 1 is characterized in that: described joint bar hole (6) be shaped as circle or ellipse or polygon or Long Circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220395692 CN202836999U (en) | 2012-08-10 | 2012-08-10 | Drawing apparatus for joint bar in hand hole of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220395692 CN202836999U (en) | 2012-08-10 | 2012-08-10 | Drawing apparatus for joint bar in hand hole of tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202836999U true CN202836999U (en) | 2013-03-27 |
Family
ID=47948680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220395692 Expired - Fee Related CN202836999U (en) | 2012-08-10 | 2012-08-10 | Drawing apparatus for joint bar in hand hole of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202836999U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798569A (en) * | 2012-08-10 | 2012-11-28 | 中铁隧道集团有限公司 | Tunnel hand hole joint bar drawing device and drawing method thereof |
| CN109732013A (en) * | 2019-01-31 | 2019-05-10 | 淮北矿业股份有限公司 | A kind of underground equipment on renoreting anchor-pole |
| CN113914889A (en) * | 2021-09-01 | 2022-01-11 | 武汉市政工程设计研究院有限责任公司 | Superposed tunnel lining structure capable of bearing high internal and external water pressure and construction method |
-
2012
- 2012-08-10 CN CN 201220395692 patent/CN202836999U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798569A (en) * | 2012-08-10 | 2012-11-28 | 中铁隧道集团有限公司 | Tunnel hand hole joint bar drawing device and drawing method thereof |
| CN102798569B (en) * | 2012-08-10 | 2015-08-12 | 中铁隧道集团有限公司 | A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof |
| CN109732013A (en) * | 2019-01-31 | 2019-05-10 | 淮北矿业股份有限公司 | A kind of underground equipment on renoreting anchor-pole |
| CN113914889A (en) * | 2021-09-01 | 2022-01-11 | 武汉市政工程设计研究院有限责任公司 | Superposed tunnel lining structure capable of bearing high internal and external water pressure and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20160810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |