CN204940273U - A kind of Prestressed anchor rope with pressure dispersing construction equipment - Google Patents
A kind of Prestressed anchor rope with pressure dispersing construction equipment Download PDFInfo
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- CN204940273U CN204940273U CN201520605147.3U CN201520605147U CN204940273U CN 204940273 U CN204940273 U CN 204940273U CN 201520605147 U CN201520605147 U CN 201520605147U CN 204940273 U CN204940273 U CN 204940273U
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- steel
- steel spring
- pressure dispersing
- anchor rope
- prestressed anchor
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Abstract
The utility model discloses a kind of Prestressed anchor rope with pressure dispersing construction equipment, comprise steel strand, steel loaded plate, steel spring, piston rod and extruded sleeve, the end of described steel strand is placed on extruded sleeve by steel loaded plate, steel spring successively, and steel spring is installed on piston rod inside; Described steel spring is in compressive state, and its coefficient of elasticity should be less than 100kN/m.The utility model structure is simple, and constructing operation is convenient, and effectively can improve the efficiency of construction of Prestressed anchor rope with pressure dispersing, construction quality also can be guaranteed.The elongation difference that the utility model causes because drift does not wait under same load action according to each unit anchor, the steel spring of corresponding length is set between loaded plate and extruded sleeve, during each unit simultaneous tension, steel spring deforms, thus ensures the uniform force of each unit anchor.
Description
Technical field
The utility model relates to side slope protection field, particularly relates to a kind of Prestressed anchor rope with pressure dispersing construction equipment.
Background technology
Steel wire or steel strand have comparatively high-tensile, have been widely used in side slope protection engineering, have achieved good result.Pressure dispersing anchorage cable adopts non-bending steel cable, and at anchoring section different depth, place arranges several loaded plate, and unbonded tendon is also corresponding is divided into array and respective loaded plate connects.During bundle body grouting reinforcement post tensioning, total stretching force will be dispersed into several less power, act on each canned paragraph by loaded plate, bond stress peak value on canned paragraph is reduced greatly and distributes also more even, improve the stress state near Anchoring part, be conducive to unstables ystem to be anchored on earth formation deep, make full use of effective anchoring section.
The bearing capacity supposing each unit anchor of pressure dispersing anchorage cable is T, its elongation δ=T × L
i/ (E
s× A
s), L
ifor unit anchor drift, E
sfor presstressed reinforcing steel modulus of elasticity, A
sfor presstressed reinforcing steel sectional area.For ensureing the uniform force of each unit anchor, its bearing capacity T, presstressed reinforcing steel elastic modulus E
swith sectional area A
sall identical, therefore its elongation δ only with drift L
irelevant, and Prestressed anchor rope with pressure dispersing each unit anchor drift is different, also elongation difference can be produced during stretch-draw, first must carry out corresponding compensate pulling before anchor cable integral tension for this reason, thus make pressure dispersing anchorage cable working procedure too loaded down with trivial details, efficiency of construction is low, and have a strong impact on construction speed, construction quality is also difficult to be guaranteed.
Utility model content
For the weak point that prior art exists, it is simple that the purpose of this utility model is to provide a kind of structure, easy to operate, the Prestressed anchor rope with pressure dispersing construction equipment of lower cost for material, thus solve Prestressed anchor rope with pressure dispersing each unit cannot the problem of simultaneous tension, when not affecting anchor cable and being stressed, significantly improve efficiency of construction.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Prestressed anchor rope with pressure dispersing construction equipment, comprise steel strand, steel loaded plate, steel spring, piston rod and extruded sleeve, the end of described steel strand is placed on extruded sleeve by steel loaded plate, steel spring successively, and steel spring is installed on piston rod inside; Described steel spring is in compressive state, and its coefficient of elasticity should be less than 100kN/m.The utility model is different according to the free extension length of different units anchor, the elongation difference that when steel spring compression work stroke equals stretch-draw, each unit anchor causes because freedom length does not wait under identical load action.
In order to realize the utility model better, described piston rod has top cover, and this top cover offers the reserving hole for steel strand.Other position of piston rod should seal completely, ensures that cement paste can not infiltrate the cylinder interior of piston rod, affects steel spring distortion.
Technical scheme is further: the compression work stroke of described steel spring equals the stretch value of steel strand when stretch-draw.
The utility model preferred steel spring Materials Selection Technology scheme is: described steel spring adopts stainless steel wire to make.
The utility model preferred steel strand Materials Selection Technology scheme is: described steel strand are non-bending steel cable.
As preferably, the coefficient of elasticity of described steel spring is 80kN/m.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) the utility model structure is simple, and constructing operation is convenient, and effectively can improve the efficiency of construction of Prestressed anchor rope with pressure dispersing, construction quality also can be guaranteed.
(2) the utility model according to each unit anchor under same load action because drift does not wait and the elongation difference that causes, the steel spring of corresponding length is set between loaded plate and extruded sleeve, during each unit simultaneous tension, steel spring deforms, thus ensures the uniform force of each unit anchor.
(3) this device belongs to side slope protection technology, and structure is simple, and constructing operation is convenient, lower cost for material.During each unit simultaneous tension of the utility model, steel spring deforms, and when not needing to compensate stretch-draw, just can ensure the uniform force of each unit anchor, significantly improve efficiency of construction.
(4) the utility model solves conventional art and easily causes prestress anchorage cable generation resilience and the defect such as lax when compensate pulling, and this device does not need to compensate stretch-draw, simplifies anchorage cable stretching step, and construction quality also can be guaranteed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the close-up schematic view of piston rod and adjacent component.
Wherein, the name corresponding to the Reference numeral in accompanying drawing is called:
1-steel strand; 2-steel loaded plate; 3-steel spring; 4-extruded sleeve; 5-Grouting Pipe; 6-piston rod.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment
As shown in Figure 1, a kind of Prestressed anchor rope with pressure dispersing construction equipment, comprise steel strand 1, steel loaded plate 2, steel spring 3, piston rod 6 and extruded sleeve 4, the end of steel strand 1 is placed on extruded sleeve 4 by steel loaded plate 2, steel spring 3 successively, and it is inner that steel spring 3 is installed on piston rod 6; Steel spring 3 is in compressive state, and its coefficient of elasticity should be less than 100kN/m.The utility model is different according to the free extension length of different units anchor, the elongation difference that when steel spring 3 compression work stroke equals stretch-draw, each unit anchor causes because freedom length does not wait under identical load action.The bearing capacity supposing each unit anchor of pressure dispersing anchorage cable is T, its
stretch value δ=T × Li/ (Es × As), Li are unit anchor drift, and Es is presstressed reinforcing steel modulus of elasticity, and As is presstressed reinforcing steel sectional area.For ensureing the uniform force of each unit anchor, its bearing capacity T, presstressed reinforcing steel elastic modulus E s are identical with sectional area As, therefore its elongation δ is only relevant to drift Li, and Prestressed anchor rope with pressure dispersing each unit anchor drift is different, also elongation difference can be produced during stretch-draw, first corresponding compensate pulling must be carried out for this reason before anchor cable integral tension.
According to an embodiment of the present utility model, piston rod 6 has top cover, and this top cover offers the reserving hole for steel strand 1.Other position of piston rod 6 should seal completely, ensures that cement paste can not infiltrate the cylinder interior of piston rod 6, affects steel spring 3 and be out of shape.
According to an embodiment of the present utility model, the compression work stroke of steel spring 3 equals the stretch value of steel strand 1 when stretch-draw.
According to an embodiment of the present utility model, steel spring 3 adopts stainless steel wire to make.
According to an embodiment of the present utility model, steel strand 1 are non-bending steel cable.
According to an embodiment of the present utility model, steel loaded plate 2 is also provided with Grouting Pipe 5.Grouting Pipe 5 makes whole slip casting process more convenient.
According to an embodiment of the present utility model, the coefficient of elasticity of the preferred steel spring 3 of the utility model is 80kN/m.
With two specific embodiments, the construction equipment that the utility model proposes is described in detail below:
Embodiment one
See Fig. 1 and Fig. 2, a kind of Prestressed anchor rope with pressure dispersing construction equipment, successively overlap with loaded plate 2, steel spring 2 and extruded sleeve 4 at non-bending steel cable 1 end of different length, different according to the free extension length of different units anchor, the elongation difference that when steel spring 3 compression work stroke equals stretch-draw, each unit anchor causes because freedom length does not wait under identical load action.The bearing capacity supposing each unit anchor of pressure dispersing anchorage cable is T, its
stretch value δ=T × Li/ (Es × As), Li are unit anchor drift, and Es is presstressed reinforcing steel modulus of elasticity, and As is presstressed reinforcing steel sectional area.For ensureing the uniform force of each unit anchor, its bearing capacity T, presstressed reinforcing steel elastic modulus E s are identical with sectional area As, therefore its elongation δ is only relevant to drift Li, and Prestressed anchor rope with pressure dispersing each unit anchor drift is different, also elongation difference can be produced during stretch-draw, first corresponding compensate pulling must be carried out for this reason before anchor cable integral tension.
Steel spring 3 compression travel refers to the difference of spring in off working state and duty length, and coefficient of elasticity should be less than 100kN/m, adopts stainless steel wire to make.
Steel spring 3 is positioned at slidably piston rod 6, and piston rod 6 top cover can be out of shape with steel spring 3 and slides.Piston rod 6 top cover reserving hole is used for steel strand 1, and other position should seal completely, ensures that cement paste can not infiltrate cylinder interior, affects camber of spring.
Prestressed anchor rope with pressure dispersing construction equipment restorative procedure comprises the following steps:
A) according to the prefabricated steel spring of elongation difference that each unit anchor causes because freedom length does not wait under identical load action, and ready-made steel spring 3 is placed in the piston rod 6 of equal length.
B) successively overlap with loaded plate 2, steel spring 3 and extruded sleeve 4 at non-bending steel cable 1 end of different length.
C) slip casting in anchor cable hole (the present embodiment carries out grouting operation by Grouting Pipe 5), reach after prescribed strength until injecting cement paste and just can carry out anchorage cable stretching construction, stretch-draw distance is determined by the unit anchor that free extended length is maximum.
Take the utility model structure simple, constructing operation is convenient, and effectively can improve the efficiency of construction of Prestressed anchor rope with pressure dispersing, construction quality also can be guaranteed.
Embodiment two
Certain speedway rock side slope, once there is fairly large slump in rock crushing, great threat construction and the operation security of speedway, and for meeting slope stability requirement, design adopts Prestressed anchor rope with pressure dispersing support reinforcement.Because side slope is larger, anchor cable quantity also reaches more than 200, adopt conventional construction method, because compensate pulling operation implemented by needs, efficiency of construction is low, separate unit stretch-draw jack can only complete the stretching construction of two anchor cables for one day, has had a strong impact on the construction speed of side slope and even whole piece expressway works.
According to field condition, adopt a kind of Prestressed anchor rope with pressure dispersing construction equipment, see Fig. 1, Fig. 2, this device successively overlaps with steel loaded plate 2, steel spring 3 and extruded sleeve 4 at the non-bending steel cable end of different length, different according to the free extension length of different units anchor, the elongation difference that when steel spring 3 compression work stroke equals stretch-draw, each unit anchor causes because freedom length does not wait under identical load action.The coefficient of elasticity 80kN/m of steel spring 3, steel spring 3 adopts stainless steel wire to make.Steel spring 3 is positioned at slidably piston rod 6, and the top cover of piston rod 6 can slide with camber of spring.The top cover reserving hole of piston rod 6 is used for steel strand 1, and other position should seal completely.
The concrete implementation step of Prestressed anchor rope with pressure dispersing construction equipment restorative procedure is as follows:
A) according to the prefabricated steel spring 3 of elongation difference that each unit anchor causes because freedom length does not wait under identical load action, and ready-made steel spring 3 is placed in the piston rod 6 of equal length.
B) successively overlap with steel loaded plate 2, steel spring 3 and extruded sleeve 4 at non-bending steel cable 1 end of different length.
C) slip casting in anchor cable hole (the present embodiment carries out grouting operation by Grouting Pipe 5), reach after prescribed strength until injecting cement paste and just can carry out anchorage cable stretching construction, stretch-draw distance is determined by the unit anchor that free extended length is maximum.
Implementation result: after adopting this Prestressed anchor rope with pressure dispersing construction equipment, compensate pulling working procedure can be omitted, separate unit stretch-draw jack is increased to one day by the stretching construction that can only complete 2 anchor cables for a day can complete 4 ~ 5, efficiency of construction is enhanced about more than once, and construction quality also meets design requirement.
Above-mentioned embodiment is a preferred embodiment of the present utility model; be not for limiting enforcement of the present utility model and interest field; all equivalences made according to the content described in the utility model patent protection scope change and approximate replacement, all should drop in protection domain of the present utility model.
Claims (6)
1. a Prestressed anchor rope with pressure dispersing construction equipment, it is characterized in that: comprise steel strand (1), steel loaded plate (2), steel spring (3), piston rod (6) and extruded sleeve (4), the end of described steel strand (1) is placed on extruded sleeve (4) by steel loaded plate (2), steel spring (3) successively, and it is inner that steel spring (3) is installed on piston rod (6); Described steel spring (3) is in compressive state, and its coefficient of elasticity should be less than 100kN/m.
2. according to a kind of Prestressed anchor rope with pressure dispersing construction equipment according to claim 1, it is characterized in that: described piston rod (6) has top cover, and this top cover offers the reserving hole for steel strand (1).
3. according to a kind of Prestressed anchor rope with pressure dispersing construction equipment according to claim 1, it is characterized in that: the compression work stroke of described steel spring (3) equals steel strand (1) stretch value when stretch-draw.
4. according to a kind of Prestressed anchor rope with pressure dispersing construction equipment according to claim 1, it is characterized in that: described steel spring (3) adopts stainless steel wire to make.
5. according to a kind of Prestressed anchor rope with pressure dispersing construction equipment according to claim 1, it is characterized in that: described steel strand (1) are non-bending steel cable.
6. according to a kind of Prestressed anchor rope with pressure dispersing construction equipment described in claim 1 or 3 or 4, it is characterized in that: the coefficient of elasticity of described steel spring (3) is 80kN/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520605147.3U CN204940273U (en) | 2015-08-12 | 2015-08-12 | A kind of Prestressed anchor rope with pressure dispersing construction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520605147.3U CN204940273U (en) | 2015-08-12 | 2015-08-12 | A kind of Prestressed anchor rope with pressure dispersing construction equipment |
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| Publication Number | Publication Date |
|---|---|
| CN204940273U true CN204940273U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520605147.3U Expired - Fee Related CN204940273U (en) | 2015-08-12 | 2015-08-12 | A kind of Prestressed anchor rope with pressure dispersing construction equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804075A (en) * | 2016-05-10 | 2016-07-27 | 中国地质科学院探矿工艺研究所 | self-supporting prestressed anchor cable |
| CN108978495A (en) * | 2018-10-16 | 2018-12-11 | 重庆交通大学 | Simply supported non-uniform bridge negative moment area steel beam prestressing force self compensation improved method |
-
2015
- 2015-08-12 CN CN201520605147.3U patent/CN204940273U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804075A (en) * | 2016-05-10 | 2016-07-27 | 中国地质科学院探矿工艺研究所 | self-supporting prestressed anchor cable |
| CN108978495A (en) * | 2018-10-16 | 2018-12-11 | 重庆交通大学 | Simply supported non-uniform bridge negative moment area steel beam prestressing force self compensation improved method |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190812 |