CN102798569B - A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof - Google Patents
A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof Download PDFInfo
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- CN102798569B CN102798569B CN201210284003.3A CN201210284003A CN102798569B CN 102798569 B CN102798569 B CN 102798569B CN 201210284003 A CN201210284003 A CN 201210284003A CN 102798569 B CN102798569 B CN 102798569B
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Abstract
A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof, relate to tunnel construction field, by being respectively equipped with at least one hole in the corner of substrate (1), be connected on the external thread at carrying bolt (2) middle part in each hole, the two ends of each carrying bolt are set to support end (8) respectively and screw end (3), the middle part of substrate is provided with at least one joint bar hole (6), joint bar retaining ring (10) is provided with on the top in the described joint bar hole of correspondence, the both sides of joint bar retaining ring are respectively equipped with limited block, limited block bottom is respectively equipped with near substrate place and stretches out and mutually corresponding recessed groove, T-slot (12) is formed to opposite by the top of two recessed grooves and limited block, wherein joint bar retaining ring is movable in T-slot is arranged, the present invention has simple to operate, fast, maintaining is convenient, the features such as applicability is strong, operating efficiency is substantially increased by enforcement of the present invention, save cost.
Description
[technical field]
The present invention relates to tunnel construction field, be specifically related to a kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof.
[background technology]
Known, wear yellow tunnel and adopt wholecircle Section Design, the internal diameter of tunnel is 7.0m, the external diameter of tunnel is 8.7m, tunnel lining to be two-layerly made up of inside and outside, outer by 7 pieces of reinforced concrete prefabricated section of jurisdiction staggered joint erections, the thick 40cm in its section of jurisdiction, ring width 1.6m, the hydraulic pressure of maximum 0.67MPa will be born owing to wearing yellow tunnel, so in order to meet the structural requirement having pressure to hold water, after completing outer lining pipe sheet assembling, inner lining structure is devised again in Shield tunnel, inner lining structure is post-tension prestressed concrete, tunnel lining adopts C40.W12.F200 prestressed concrete, thick 45cm, standard fragmentation length is 9.6m, in order to verify opening degree between section of jurisdiction outer lining and concrete lining under 0.67Mpa hydraulic pressure and stressing conditions, adopting high-grade concrete backfill at tunnel section of jurisdiction hand hole, arranging pre-doweling in the hand hole of section of jurisdiction simultaneously, being connected with tunnel lining steel reinforcement cage.
And in order to ensure that tunnel can reach designing requirement, workmen often carries out sampling pull-out test to pre-buried hand hole joint bar in work progress, and then whether backfill concrete can meet joint bar anchoring effect in checking hand, because in tunnel, section of jurisdiction hand hole is many, and joint bar anchorage depth is little, so have strict requirement to joint bar pull-out test process, existing test method is:
Method one: by making a steel plate, adopts the lifting jack of artificial support's fixing anchor bar drawing instrument, then regulates the direction of the pre-buried rod member of lifting jack and anchor pole or other, and direction regulates unanimously carries out drawing again.This kind of method carries out drawing, construction is difficulty comparatively, several personnel need be equipped with when constructing and carry out supporting steel plate, then, after anchor pole loads lifting jack, regulate steel plate vertical with lifting jack by increasing cushion block in steel plate corner, after lifting jack is stressed, starts drawing again, in work progress, operation easier is large, and rockbolt stress direction is wayward, and speed of application is slow;
Method two: by cutting rockbolt installation face or polishing, after making anchor pole direction vertical with installed surface direction, lifting jack is installed again and carries out drawing, this kind of method for the anchor pole in preliminary bracing face or pre-buried rod member favourable, but to cut or construction surface of polishing needs strict control, and it is poor for applicability, the drawing construction that more or building surface must not destroy to quantity, the method operating difficulties, has destruction to facade and anchorage depth.
Above-mentioned test method is adopted to there is inefficiency, the drawbacks such as complicated operation, owing to requiring that every standard paragraphs is chosen 3 groups of joint bars at crown position and done pull-out test at the trial, single joint bar design pulling capacity is 86.6KN, when pull-out test, necessary strict guarantee joint bar and anchor rod drawing instrument are on the same line, this test drawing amount is large, and anchor rod drawing instrument is not easily fixed 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 to the technical barrier just having become those skilled in the art anxious to be resolved.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention provides a kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof, the present invention arranges carrying bolt by the corner at substrate, and by arranging joint bar retaining ring on the top in joint bar hole, substantially increase the speed to hand hole joint bar pull-out test and security, the present invention has the features such as simple to operate, quick, maintaining convenient, applicability is strong, substantially increases operating efficiency, saved cost by enforcement of the present invention.
For achieving the above object, the present invention adopts following technical scheme:
A kind of tunnel hand hole joint bar draw-off gear, comprise substrate, carrying bolt and joint bar retaining ring, at least one hole is respectively equipped with in the corner of substrate, be connected on the external thread in the middle part of carrying bolt in described each hole, the two ends of each carrying bolt are set to support end respectively and screw end, the middle part of described substrate is provided with at least one joint bar hole, joint bar retaining ring is provided with on the top in the described joint bar hole of correspondence, the both sides of described joint bar retaining ring are respectively equipped with limited block, described limited block bottom is respectively equipped with near substrate place and stretches out and mutually corresponding recessed groove, T-slot is formed to opposite by the top of two recessed grooves and limited block, the activity in T-slot 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 is that direct drilling and tapping forms silk hole or arranges unthreaded hole by the corner at substrate in the corner of substrate, forms silk hole on the top of described unthreaded hole by welding or silk connected nut.
Described tunnel hand hole joint bar draw-off gear, the profile of described substrate is oval or the circular or sexangle of triangle or quadrilateral or polygon.
Described tunnel hand hole joint bar draw-off gear, the replacing structure of described T-slot is be respectively equipped with angle steel in the both sides of joint bar retaining ring, and forms T-slot by described two angle steel or directly on substrate, directly arrange T-slot.
Described tunnel hand hole joint bar draw-off gear, the substrate outside described two angle steel is respectively equipped with reinforcement.
Described tunnel hand hole joint bar draw-off gear, described joint bar retaining ring is L-type structure, is provided with circle or oval or polygonal holes, is provided with a hole, is provided with clamping screw in described silk hole at the side of joint bar retaining ring on the base of joint bar retaining ring.
Described tunnel hand hole joint bar draw-off gear, described in screw end shape be two planes 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, and the shape of described each technology groove is semicircle circular or oval or polygon or square.
Described tunnel hand hole joint bar draw-off gear, the shape in described joint bar hole is circular or oval or polygon or Long Circle.
A kind of Hubbing method of tunnel hand hole joint bar draw-off gear, substrate is fixed by the first step, first experimentally the shape of position regulates the carrying bolt that substrate corner is arranged in advance, namely by screw carrying bolt one end arrange screw end, the support end that the carrying bolt other end is arranged is close to joint bar installed surface, then the pre-doweling of selected experiment position is passed successively the joint bar retaining ring on substrate in T-slot and joint bar hole, and by the clamping screw in joint bar retaining ring, pre-doweling and substrate are fixed, subsequently joint bar drawing instrument is fixed to the end of pre-doweling, second step regulates substrate, first observe the lifting jack in joint bar drawing instrument and the plane of substrate whether vertical with fit tight, as out of plumb or laminating not tight, carrying bolt by substrate corner is arranged regulates, until vertical tight with laminating, now can pressurize to joint bar drawing instrument, when namely unclamping the clamping screw in joint bar retaining ring after the lifting jack in joint bar drawing instrument is stressed, 3rd step carries out pull-out test, namely opens joint bar drawing instrument, carries out testing the drawing of hand hole joint bar to the lifting jack pressurization in joint bar drawing instrument.
Owing to adopting technical scheme as above, the present invention has following beneficial effect:
A kind of tunnel hand hole joint bar draw-off gear of the present invention and Hubbing method thereof, by arranging carrying bolt in the corner of substrate, the present invention ensures that substrate can adapt to the pre-doweling under different angle, lifting jack simultaneously in guarantee anchor rod drawing instrument and pre-doweling are on the same line, the present invention also makes pre-doweling and substrate be fixed by arranging joint bar retaining ring on the top in joint bar hole, substantially increase the speed to hand hole joint bar pull-out test and security, the present invention has simple to operate, fast, maintaining is convenient, the features such as applicability is strong, as long as a people under the prerequisite not affecting facade and anchorage depth just can complete experiment by enforcement of the present invention, substantially increase operating efficiency, reduce construction cost.
[accompanying drawing explanation]
Fig. 1 is the present invention's perspective view in use;
Fig. 2 is assembly relation structural representation of the present invention;
In figure: 1, substrate; 2, carrying bolt; 3, end is screwed; 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-slot; 13, reinforcement; 14, angle steel.
[embodiment]
Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples;
A kind of tunnel hand hole joint bar draw-off gear described in 1 ~ 2 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 oval or the circular or sexangle of triangle or quadrilateral or polygon, by substrate 1 for joint bar drawing instrument 7 provides fixed operation platform, its effect provides support job platform to during lifting jack operation in joint bar drawing instrument, the two ends of described substrate 1 are respectively equipped with at least one technology groove 5, the shape of described each technology groove 5 is semicircle circular or oval or polygon or square, at least one hole is respectively equipped with in the corner of substrate 1, described silk hole is that direct drilling and tapping forms silk hole or by arranging unthreaded hole in the corner of substrate 1 in the corner of substrate 1, silk hole is formed by welding or silk connected nut 9 on the top of described unthreaded hole, be connected on the external thread in the middle part of carrying bolt 2 in each hole, the two ends of each carrying bolt 2 are set to support end 8 respectively and screw end 3, the described shape screwing end 3 is two planes 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, the shape in described joint bar hole 6 is circular or oval or polygon or Long Circle, joint bar retaining ring 10 is provided with on the top in the described joint bar hole 6 of correspondence, joint bar retaining ring 10 is L-type structure, circle or oval or polygonal holes is provided with on the base of joint bar retaining ring 10, a hole is provided with at the side of joint bar retaining ring 10, clamping screw 11 is provided with in described silk hole, the both sides of described joint bar retaining ring 10 are respectively equipped with limited block, described limited block bottom is respectively equipped with near substrate 1 place and stretches out and mutually corresponding recessed groove, T-slot 12 is formed to opposite by the top of two recessed grooves and limited block, the replacing structure of described T-slot 12 is be respectively equipped with angle steel 14 in the both sides of joint bar retaining ring 10, and form T-slot 12 by described two angle steel 14 or directly T-slot 12 be directly set on substrate 1, wherein the effect of T-slot 12 is for joint bar retaining ring 10 provides location, substrate 1 outside described two angle steel 14 is respectively equipped with reinforcement 13, the activity in T-slot 12 of wherein said joint bar retaining ring 10 arranges 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 invention, substrate 1 is fixed by the first step, first experimentally the shape of position regulates the carrying bolt 2 that substrate 1 four jiaos is arranged in advance, namely by screw carrying bolt 2 one end arrange screw end 3, make support end 8 that carrying bolt 2 other end is arranged close to joint bar installed surface, then the pre-doweling 4 of selected experiment position is passed successively the joint bar retaining ring 10 on substrate 1 in T-slot 12 and joint bar hole 6, and by the clamping screw 11 in joint bar retaining ring 10, pre-doweling 4 is fixed with substrate 1, subsequently joint bar drawing instrument 7 is fixed to the end of pre-doweling 4, second step regulates substrate 1, first observe the lifting jack in joint bar drawing instrument 7 and the plane of substrate 1 whether vertical with fit tight, as out of plumb or laminating not tight, carrying bolt 2 by substrate 1 four jiaos is arranged regulates, until vertical tight with laminating, now can pressurize to joint bar drawing instrument 7, when namely unclamping the clamping screw 11 in joint bar retaining ring 10 after the lifting jack in joint bar drawing instrument 7 is stressed, 3rd step carries out pull-out test, namely opens joint bar drawing instrument 7, carries out testing the drawing of hand hole joint bar to the lifting jack pressurization in joint bar drawing instrument 7.
The points for attention of the present invention in work progress are:
(1) should notice during installation base plate 1 that the clamping screw 11 in T-slot 12 in joint bar retaining ring 10 is installed accurately, and clamping screw 11 screw mandrel all should be back-outed;
(2) lifting jack in joint bar drawing instrument 7 and substrate 1 should check when fixing that whether clamping screw 11 is tightened, and prevents substrate 1 from dropping;
(3) strengthen the awareness of safety of workmen, carry out operation safety training before hilllock, before marching into the arena, must the protective articless such as safety helmet be worn.
A kind of tunnel hand hole joint bar draw-off gear of the present invention and Hubbing method thereof, be not only applicable to section of jurisdiction hand hole joint bar pull-out test, is equally applicable to the pull-out test of tunnel anchor pole and the drawing experiment of the pre-buried rod member of buildings.
Part not in the detailed description of the invention is prior art.
The embodiment selected in this article in order to open object of the present invention, currently thinks to be suitable for, but it is to be understood that the present invention is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.
Claims (9)
1. a 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: be respectively equipped with at least one hole A in the corner of substrate (1), each described silk hole A is connected on the external thread at carrying bolt (2) middle part, the two ends of each carrying bolt (2) are set to support end (8) respectively and screw end (3), the middle part of described substrate (1) is provided with at least one joint bar hole (6), joint bar retaining ring (10) is provided with on the top of the described joint bar hole (6) of correspondence, described joint bar retaining ring (10) is L-type structure, circle or oval or polygonal holes is provided with on the base of joint bar retaining ring (10), a hole B is provided with at the side of joint bar retaining ring (10), clamping screw (11) is provided with in described silk hole B, limited block is respectively equipped with in the both sides of joint bar retaining ring (10), described limited block bottom is respectively equipped with near substrate (1) place and stretches out and mutually corresponding recessed groove, T-slot (12) is formed by the top opposite face of two recessed grooves and limited block, the activity in T-slot (12) of wherein said joint bar retaining ring (10) arranges the tunnel hand hole joint bar draw-off gear described in formation.
2. tunnel hand hole joint bar draw-off gear according to claim 1, it is characterized in that: described silk hole A is that direct drilling and tapping forms silk hole or by arranging unthreaded hole in the corner of substrate (1), forms silk hole on the top of described unthreaded hole by welding or silk connected nut (9) in the corner of substrate (1).
3. the tunnel hand hole joint bar draw-off gear according to the arbitrary claim of claim 1 or 2, is characterized in that: the profile of described substrate (1) is quadrilateral.
4. tunnel hand hole joint bar draw-off gear according to claim 1, it is characterized in that: described T-slot (12) also can be made up of following replacing structure: be respectively equipped with angle steel (14) in the both sides of joint bar retaining ring (10), and form T-slot (12) by angle steel described in two (14) or directly T-slot (12) be set on substrate (1).
5. tunnel hand hole joint bar draw-off gear according to claim 4, is characterized in that: the substrate (1) in angle steel described in two (14) outside is respectively equipped with reinforcement (13).
6. tunnel hand hole joint bar draw-off gear according to claim 1, is characterized in that: described in screw end (3) shape be quadrilateral.
7. tunnel hand hole joint bar draw-off gear according to claim 1, is characterized in that: the two ends of described substrate (1) are respectively equipped with at least one technology groove (5), and the shape of each described technology groove (5) is semicircle.
8. tunnel hand hole joint bar draw-off gear according to claim 1, is characterized in that: the shape of described joint bar hole (6) is circular or oval or polygon.
9. a kind of tunnel hand hole joint bar Hubbing method implemented by the tunnel hand hole joint bar draw-off gear according to the arbitrary claim of claim 1 ~ 8, it is characterized in that: substrate (1) is fixed by the first step, first experimentally the shape of position regulates the carrying bolt (2) that substrate (1) corner is arranged in advance, namely by screw carrying bolt (2) one end arrange screw end (3), the support end (8) that carrying bolt (2) other end is arranged is close to joint bar installed surface, then the pre-doweling (4) of selected experiment position is passed successively the joint bar retaining ring (10) in the upper T-slot (12) of substrate (1) and joint bar hole (6), and by the clamping screw (11) in 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 regulates substrate (1), first observe the lifting jack in joint bar drawing instrument (7) and the plane of substrate (1) whether vertical with fit tight, as out of plumb or laminating not tight, carrying bolt (2) by substrate (1) corner is arranged regulates, until vertical tight with laminating, now can pressurize to joint bar drawing instrument (7), when namely unclamping the clamping screw (11) in joint bar retaining ring (10) after the lifting jack in joint bar drawing instrument (7) is stressed, 3rd step carries out pull-out test, namely opens joint bar drawing instrument (7), carries out testing the drawing of hand hole joint bar to the lifting jack pressurization in joint bar drawing instrument (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284003.3A CN102798569B (en) | 2012-08-10 | 2012-08-10 | A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284003.3A CN102798569B (en) | 2012-08-10 | 2012-08-10 | A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof |
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| Publication Number | Publication Date |
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| CN102798569A CN102798569A (en) | 2012-11-28 |
| CN102798569B true CN102798569B (en) | 2015-08-12 |
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| CN201210284003.3A Active CN102798569B (en) | 2012-08-10 | 2012-08-10 | A kind of tunnel hand hole joint bar draw-off gear and Hubbing method thereof |
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| CN103335884A (en) * | 2013-07-09 | 2013-10-02 | 郑卫华 | Backing plate used for anchor rod pull-out test |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865920A (en) * | 2005-05-20 | 2006-11-22 | 深圳市建筑科学研究院 | Method for connecting prestressed concrete pipe pile and testing device |
| CN101435207A (en) * | 2008-12-24 | 2009-05-20 | 关喜才 | Uplift pile loading test method and apparatus |
| CN201258494Y (en) * | 2008-08-27 | 2009-06-17 | 湖南省第六工程有限公司 | Loading unit for single-pile vertical anti-pulling static load test |
| CN201527380U (en) * | 2009-10-26 | 2010-07-14 | 中国十七冶建设有限公司 | Self-tightening type pulling fixture for puling resistance by single pile |
| CN202836999U (en) * | 2012-08-10 | 2013-03-27 | 中铁隧道集团有限公司 | Drawing apparatus for joint bar in hand hole of tunnel |
-
2012
- 2012-08-10 CN CN201210284003.3A patent/CN102798569B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865920A (en) * | 2005-05-20 | 2006-11-22 | 深圳市建筑科学研究院 | Method for connecting prestressed concrete pipe pile and testing device |
| CN201258494Y (en) * | 2008-08-27 | 2009-06-17 | 湖南省第六工程有限公司 | Loading unit for single-pile vertical anti-pulling static load test |
| CN101435207A (en) * | 2008-12-24 | 2009-05-20 | 关喜才 | Uplift pile loading test method and apparatus |
| CN201527380U (en) * | 2009-10-26 | 2010-07-14 | 中国十七冶建设有限公司 | Self-tightening type pulling fixture for puling resistance by single pile |
| CN202836999U (en) * | 2012-08-10 | 2013-03-27 | 中铁隧道集团有限公司 | Drawing apparatus for joint bar in hand hole of tunnel |
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| CN102798569A (en) | 2012-11-28 |
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Inventor after: Zheng Qingjun Inventor after: Jiang Yuanyong Inventor after: Sun Mou Inventor after: Sun Zhenchuan Inventor after: Zhao Quanmin Inventor after: Li Rongzhi Inventor after: Zhong Shengxing Inventor after: Zhao Dianbin Inventor after: Wang Mingsheng Inventor after: Quan Hua Inventor after: Huang Peng Inventor after: Yang Wenjun Inventor after: Xu Xing Inventor before: Zheng Qingjun Inventor before: Sun Mou Inventor before: Sun Zhenchuan Inventor before: Zhao Quanmin Inventor before: Li Rongzhi Inventor before: Zhong Shengxing Inventor before: Zhao Dianbin Inventor before: Quan Hua Inventor before: Huang Peng Inventor before: Yang Wenjun Inventor before: Xu Xing Inventor before: Jiang Yuanyong |
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Free format text: CORRECT: INVENTOR; FROM: ZHENG QINGJUN LI RONGZHI ZHONG SHENGXING ZHAO DIANBIN QUAN HUA HUANG PENG YANG WENJUN XU XING JIANG YUANYONG SUN MOU SUN ZHENCHUAN ZHAO QUANMIN TO: ZHENG QINGJUN LI RONGZHI ZHONG SHENGXING ZHAO DIANBIN WANG MINGSHENG QUAN HUA HUANG PENG YANG WENJUN XU XING JIANG YUANYONG SUN MOU SUN ZHENCHUAN ZHAO QUANMIN |
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