CN203891022U - Tensioning and anchoring device based on unbonded prestressing reinforced soil technology - Google Patents
Tensioning and anchoring device based on unbonded prestressing reinforced soil technology Download PDFInfo
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- CN203891022U CN203891022U CN201420336388.8U CN201420336388U CN203891022U CN 203891022 U CN203891022 U CN 203891022U CN 201420336388 U CN201420336388 U CN 201420336388U CN 203891022 U CN203891022 U CN 203891022U
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- screw rod
- anchoring
- tensioning
- device based
- support
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Abstract
The utility model discloses a tensioning and anchoring device based on the unbonded prestressing reinforced soil technology. The tensioning and anchoring device comprises an anchoring screw rod (3), side face baffles (4) and an anchoring nut (7) and further comprises a support (5), wherein the support (5) is fixed to the side face baffles (4) through an inclined supporting frame (6) penetrating through the anchoring screw rod (3) and a fixing nut (9) arranged on the anchoring screw rod (3); a hydraulic jack (13) is arranged on the outer side of the top end of the support (5), and a prestressed tendon (1) is tensioned through a tensioning screw rod (12) penetrating through the support (5) and the anchoring screw rod (3) connected with the tensioning screw rod (12); anchoring is completed by screwing down the anchoring nut (7) after tensioning is completed. The tensioning and anchoring device integrates tensioning and anchoring, prestress of reinforced material is accurately controlled, tensioning efficiency is greatly improved, prestress loss caused after anchoring is performed is effectively reduced, construction quality is improved, and economic cost is saved.
Description
Technical field
The utility model relates to prestressing without bondn reinforced earth technology field, particularly relates to a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology.
Background technology
Prestressing without bondn reinforced earth technology is a kind of novel reinforced earth technology of reinforcing for embankment engineering.This technology adopts active mode constraint side slope, thereby has further increased embankment stability, has reduced the sedimentation of embankment.This technology is compared outstanding Heterosis aspect three with conventional reinforced earth technology: one, less demanding to filler, widely applicable, and conventional reinforced earth technology is more suitable for inviscid filler conventionally; Two, for the sedimentation of reinforced earth end face, can carry out adjusting to a certain degree; Three, further increase reinforced earth body integral body and local stability.The advantage that reaches above three aspects: should guarantee reinforced earth body to apply effective prestressing force.Apply at present prestressed method and be mainly the method (specifically can with reference to Chinese utility model patent < < anchor device > > notice of authorization CN202913408U) that adopts artificial fastening nut, although the method can effectively reduce the loss of prestress after anchoring, the subject matter that the method exists is to apply prestressed degree to be restricted.In stretching process, owing to there is larger frictional resistance between nut and contact surface, make pretension more and more difficulty apply so that stretch-draw efficiency is very low, most of power is lost in and overcomes on frictional resistance.Secondly the anchoring for presstressed reinforcing steel mainly adopts the anchoring system being comprised of anchor head, anchor bundle body and anchoring section, although this system is the stretch-draw of supporting jack very easily, be but difficult to overcome loss of prestress and the higher very difficult spread of cost that the contraction due to presstressed reinforcing steel brings and use.In order to overcome the frictional resistance in stretching process, reduce tensioning equipment side direction in the loss of prestress, particularly this technology after anchoring and hang the construction requirement of stretch-draw, better solve Practical Project problem, be badly in need of corresponding tensioning equipment and anchor device.
Utility model content
The deficiency existing for above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of to device that in prestressing without bondn reinforced earth technology, interior tendon material carries out stretch-draw and anchoring, thereby meet in prestressing without bondn reinforced earth technology the prestressed requirement that applies and control, use this device can realize the stretch-draw to interior tendon material, and the effective anchoring after stretch-draw.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology, comprise grappling screw rod, side board, anchoring nut, also comprise a support, described support is fixed on side board by the oblique bracing frame through described grappling screw rod and the hold-down nut being arranged on described grappling screw rod;
One hydraulic jack is arranged at described cantilever tip outside, by the tensioning screw rod through described support and the grappling screw rod being connected with described tensioning screw rod, presstressed reinforcing steel material is carried out to stretch-draw; By the oil meter reading on oil pump, realize the prestress control of reinforcement material and digitlization stretch-draw; After stretch-draw completes, tighten described anchoring nut, described presstressed reinforcing steel material is anchored on described side board.
Further, described hold-down nut and anchoring nut place are respectively arranged with outside ratchet spanner and inner side ratchet spanner.Ratchet spanner still can normally use in the situation that work angle is very little, thereby it is narrow and small to solve this device operating space, and inconvenience screws this situation of nut.
Further, described frame bottom is provided with foot's steel plate, can coordinate oblique bracing frame to realize side direction and fix, and avoids producing stress and concentrate on side board.Described oblique bracing frame is that the Plate Welding by several specific dimensions forms.This bracing frame one end has hole to realize its rotation centering through grappling screw rod, and the other end pushes against support foot steel plate and supports to realize.Thereby the steel plate that has hole end is perpendicular, guarantee and fully the contacting of hold-down nut, the steel plate contacting with foot is horizontal plane, and middle interconnecting piece is divided into oblique steel plate.The vertical vertical length of oblique bracing frame should with support equipped, guarantee that it can be pushed against on foot's steel plate just.
Further, described support inside top corner welding has stiffening rib, and support is played and supported and reinforcement effect, prevents support force distortion and collapses.
Further, before not yet applying prestressing force, in order to guarantee the support of hydraulic jack cylinder and to fix, described cantilever tip outside is welded with the support supporting plate of the circular arc of the described hydraulic jack of carrying.
Further, described hydraulic jack is feed-through hydraulic jack.
Further, the core Force transmission parts that tensioning screw rod is tensioned prestressing bar.Between hydraulic jack and tensioning screw rod termination, be provided with pad, tensioning screw rod is connected with hydraulic jack by pad and guarantees its centering.The other end is with the screw thread of certain length, to guarantee the power transmission requirement in stretching process.Tensioning screw rod is connected with the grappling screw rod of presstressed reinforcing steel by attaching nut.
Further, grappling screw rod is reinforcement material to be carried out to the necessary member of stretch-draw and anchoring.Described grappling screw rod one end is with circular port, and described presstressed reinforcing steel material, through circular port, utilizes U-shaped button or the soft rope of prestressing force crimping to be fixed.
Further, described grappling screw rod is connected by an attaching nut with tensioning screw rod.Attaching nut can pass freely through cradle top surface institute opened round hole in stretching process.
The utlity model has following remarkable advantage: the side self-balancing of implement device, and stretch-draw and anchoring integrated and to the prestressed control of reinforcement material, thereby greatly improved stretch-draw efficiency, effectively reduced the loss of prestress after anchoring, realized two times tensioning and anchoring.
Accompanying drawing explanation
Fig. 1 is the side structure schematic diagram of the utility model anchor device;
Fig. 2 is the utility model anchor device a-a generalized section;
Fig. 3 is the right view of the utility model anchor device;
Fig. 4 is the oblique support frame structure schematic diagram of the utility model anchor device;
Fig. 5 is the oblique bracing frame plan view of the utility model anchor device.
In figure: 1-presstressed reinforcing steel material, the soft rope of 2-presstressed reinforcing steel crimping, 3-grappling screw rod, 4-side board, 5-support, 6 oblique bracing frames, 7-anchoring nut, 8-foot steel plate, 9-hold-down nut, 10-attaching nut, ratchet spanner inside 11a-, ratchet spanner outside 11b-, 12-tensioning screw rod, 13-hydraulic jack, 14-supports supporting plate, 15-pad, 16-tensioning screw rod termination, 17-stiffening rib.
The specific embodiment
Below in conjunction with the specific embodiment and accompanying drawing, the utility model is described in further detail.
The first step is put into grappling screw rod 3 by pad, and tentatively screws anchoring nut 7, puts into inner side ratchet spanner 11a, completes pre-anchoring.Put into oblique support 6, screw on hold-down nut 9.
Second step is put support 5, adjusts its position.Rotate oblique support 6 to vertical position, adjusting pole 5 and oblique support 6, make oblique support level part steel plate push against up and down support foot steel plate 8.Utilize the outside ratchet spanner 11b nut 9 that is tightened, by oblique support 6, apply power to support 5, support 5 is fixed on side board 4.
The 3rd step is put into hydraulic jack 13 by position shown in Fig. 1, by adjusting hydraulic jack 13 positions, guarantee itself and grappling screw rod 3 centerings, and guarantees that it is not having sufficient contact with support supporting plate 14 before stretch-draw.After hydraulic jack 13 is in place, penetrate tensioning screw rod 12, by attaching nut 10, grappling screw rod 3 is connected to (two ends screw rod screw-in length should meet the stressed needs of stretch-draw) on tensioning screw rod 12.The different length that this part can be stretched out according to grappling screw rod 3 is selected tensioning screw rod 12 and the attaching nut 10 of appropriate length, to meet actual requirement of engineering.
The 4th step connects hydraulic jack 13 and oil pump.By presstressed reinforcing steel material 1 being carried out to stretch-draw to hydraulic jack 13 fuel feeding.Observe oil meter reading until reach predetermined stretching force size.
The 5th step, after reaching predetermined stretch-draw requirement, stops stretch-draw.By inner side, ratchet spanner 11a screws anchoring nut 7.Then shed oil pressure, disconnect the connection between nut 10 and grappling screw rod 3, take off support 5 and oblique bracing frame 6.So far complete stretch-draw and the anchoring of this presstressed reinforcing steel material.
The 6th step, in reality is safeguarded, utilizes this device to connect presstressed reinforcing steel material, by hydraulic jack, carries out preliminary stretch-draw, and when anchoring nut 7 departs from pad, now oil meter reading can reflect prestressing force size in muscle material.When loss occurs prestressing force, can repeat above step and carry out repeatedly stretch-draw.
The utility model specific embodiment be in sum only the utility model preferred embodiment, be not intended to limit the restriction of the utility model protection domain.Therefore, any change of doing within technical characterictic of the present utility model, modification, substitute, combination or simplify, all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (8)
1. the stretching and anchoring device based on prestressing without bondn reinforced earth technology, comprise grappling screw rod (3), side board (4), anchoring nut (7), it is characterized in that, also comprise a support (5), described support (5) is fixed on side board (4) by the oblique bracing frame (6) through described grappling screw rod (3) and the hold-down nut (9) that is arranged on described grappling screw rod (3);
One hydraulic jack (13) is arranged at outside, described support (5) top, by the tensioning screw rod (12) through described support (5) and the grappling screw rod (3) being connected with described tensioning screw rod (12), presstressed reinforcing steel material (1) is carried out to stretch-draw; After stretch-draw completes, tighten described anchoring nut (7), described presstressed reinforcing steel material (1) is anchored on described side board (4).
2. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1, it is characterized in that, described hold-down nut (9) and anchoring nut (7) locate to be respectively arranged with outside ratchet spanner (11b) and inner side ratchet spanner (11a).
3. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1 and 2, is characterized in that, described support (5) bottom is provided with foot's steel plate (8).
4. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1 and 2, is characterized in that, described support (5) inside top is provided with stiffening rib (17).
5. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1 and 2, is characterized in that, described support (5) top arranged outside has the support supporting plate (14) of the described hydraulic jack of carrying (13).
6. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1 and 2, is characterized in that, described hydraulic jack (13) is feed-through hydraulic jack.
7. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1 and 2, it is characterized in that, described grappling screw rod (3) one end is with circular port, described presstressed reinforcing steel material (1), through circular port, utilizes U-shaped button, the soft rope of presstressed reinforcing steel crimping (2) to be fixed.
8. a kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology according to claim 1 and 2, is characterized in that, described grappling screw rod (3) is connected by an attaching nut (10) with tensioning screw rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336388.8U CN203891022U (en) | 2014-06-23 | 2014-06-23 | Tensioning and anchoring device based on unbonded prestressing reinforced soil technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336388.8U CN203891022U (en) | 2014-06-23 | 2014-06-23 | Tensioning and anchoring device based on unbonded prestressing reinforced soil technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891022U true CN203891022U (en) | 2014-10-22 |
Family
ID=51717443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420336388.8U Expired - Fee Related CN203891022U (en) | 2014-06-23 | 2014-06-23 | Tensioning and anchoring device based on unbonded prestressing reinforced soil technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005410A (en) * | 2014-06-23 | 2014-08-27 | 湖南大学 | Tensioning and anchoring device based on unbonded prestress reinforced soil technology |
| CN109026059A (en) * | 2018-07-25 | 2018-12-18 | 同济大学 | A kind of fixed end, pretightning force applying method and ring plate model |
-
2014
- 2014-06-23 CN CN201420336388.8U patent/CN203891022U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005410A (en) * | 2014-06-23 | 2014-08-27 | 湖南大学 | Tensioning and anchoring device based on unbonded prestress reinforced soil technology |
| CN104005410B (en) * | 2014-06-23 | 2015-12-02 | 湖南大学 | A kind of stretching and anchoring device based on prestressing without bondn reinforced earth technology |
| CN109026059A (en) * | 2018-07-25 | 2018-12-18 | 同济大学 | A kind of fixed end, pretightning force applying method and ring plate model |
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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: 20141022 Termination date: 20160623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |