CN205120709U - Constant -resistance large deformation anchor rope device suitable for experiment of indoor physical model - Google Patents
Constant -resistance large deformation anchor rope device suitable for experiment of indoor physical model Download PDFInfo
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- CN205120709U CN205120709U CN201520792027.9U CN201520792027U CN205120709U CN 205120709 U CN205120709 U CN 205120709U CN 201520792027 U CN201520792027 U CN 201520792027U CN 205120709 U CN205120709 U CN 205120709U
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Abstract
The utility model provides a constant -resistance large deformation anchor rope device suitable for experiment of indoor physical model which includes: the sleeve pipe, the inside lining is the tubulose, and first end outer wall is equipped with the step, and first end inner wall is the loudspeaker form, and on the sleeve pipe overlaps tightly and locates the inside lining, and the step of the first end of inside lining is replaced to the first end terminal surface of sheathed tube, the constant -resistance body is the column, runs through the inside lining, first end terminal surface at least with the first end terminal surface parallel and level of inside lining, the second end extends to the second of inside lining and holds the outside, the slide head is the wedge, and main aspects are fixed in the first distolateral face of the constant -resistance body, then the contradict first end inner wall of inside lining of tip, wire rope, one end is connected with the second end of the constant -resistance body, wherein, the hardness of inside lining is less than the hardness of the constant -resistance body and slide head, and when the pulling force that receives wire rope when the constant -resistance body was greater than the frictional force between slide head and the inside lining, the constant -resistance body slided along the even constant -resistance friction of inside lining production. The utility model discloses the phenomenon that can avoid traditional anchor rope can not adapt to the constant -resistance large deformation of side slope rock mass and take place to destroy.
Description
Technical field
The utility model relates to Anchor Cable Technique field, particularly a kind of constant resistance and large deformation anchor cable device (can referred to as NPR constant resistance and large deformation anchor cable device, NPR:NegativePoissonRatioCable) being applicable to indoor physical model experiment.
Background technology
By the physical phenomenon on Landslide Model experimental study landslide, can help emphatically to solve the theory and practice problem in landslide engineering.This experiment the overall process of the development of landslide being difficult to observe, can repeat simulative display out in the wild in the lab in a short time.When landslide enters quick sliding, close on the dangerous property of observation, and the deformation failure of gliding mass inside is also difficult to observe, uses Landslide Model experiment but can effectively observe, become the indispensable means of research on landslide.
The sixties in 20th century, the data statistic analysis recorded is tested in the filial piety of Japanese researchers's vegetarian rattan enlightening by a large amount of Landslide Models, proposing with rate of deformation is foundation, and the forecast making landslide time of origin by secondary, three creep curves and experimental formula is successful.Afterwards, other countries and area application the method also obtain and have treated useful result.So Landslide Model experiment is for the fundamental research of landslide engineering and applied research, particularly to the research of the various failure mechanisms come down, very important beyond doubt.
At present, in the research of process of landslides, the research that gliding mass internal modification destroys is monitored mainly through ground displacement and deep anchor cable, found that the traditional prestress anchorage cable of application served as mechanics transmitting device and carries out measurement existing defects to gliding mass internal modification afterwards, when such as, sliding force on slipping plane and fault surface exceedes the prestress anchorage cable strength of materials, can anchor rope breakage be there is, the accident that mechanical signal transmission system destruction, whole monitoring system were lost efficacy, cannot monitor continuously landslide overall process.
Given this, before and after 2010, industry develops the special constant resistance and large deformation cable of field engineering and permanent resistance install thereof, and successful Application at the scene, because its build is huge, quality weight, is not suitable with indoor physical model experiment demand.
Summary of the invention
The purpose of this utility model is to provide a kind of constant resistance and large deformation anchor cable device being applicable to indoor physical model experiment, and to be applicable to indoor physical model experiment, the experimental study special for landslide engineering lays the foundation.
To achieve these goals, the utility model provides following technical scheme:
Be applicable to a constant resistance and large deformation anchor cable device for indoor physical model experiment, it comprises: sleeve pipe, metal material, and is coated with anticorrosive coat, in a tubular form; Liner, in a tubular form, first end outer wall is provided with step, first end inwall is horn-like, described sleeve pipe be sheathed on closely described in be lining with, and the first end end face of described sleeve pipe supports the step of described liner first end, and the second end end face of described sleeve pipe is concordant with the second end end face of described liner; Constant-resistance body, metal material, is also coated with anticorrosive coat, in column, runs through described liner, and coaxially arranges with described liner, and first end end face is at least concordant with the first end end face of described liner, and the second end that the second end extends to described liner is outside; Slide head, metal material, in wedge shape, large end is fixed on described constant-resistance body first end side, and small end is then conflicted the first end inwall of described liner; Wire rope, one end is connected with the second end of described constant-resistance body; Wherein, the hardness of described liner is less than the hardness of described constant-resistance body and slide head, when the pulling force that described constant-resistance body is subject to described wire rope is greater than the friction force between described slide head and described liner, described constant-resistance body produces uniform constant-resistance frictional slip along described liner.
Preferably, be applicable in the constant resistance and large deformation anchor cable device of indoor physical model experiment above-mentioned, described liner is duroplasts material.
Preferably, be applicable in the constant resistance and large deformation anchor cable device of indoor physical model experiment above-mentioned, the large end of described slide head is threaded with described constant-resistance body.
Preferably, be applicable in the constant resistance and large deformation anchor cable device of indoor physical model experiment above-mentioned, described slide head is multiple, circumferentially, is evenly arranged at the side of described constant-resistance body.
Preferably, be applicable in the constant resistance and large deformation anchor cable device of indoor physical model experiment above-mentioned, the second end of described constant-resistance body is provided with a through hole, and described steel wire penetrating is also fixed in described through hole.
Preferably, be applicable in the constant resistance and large deformation anchor cable device of indoor physical model experiment above-mentioned, the position described constant-resistance body being arranged described slide head is hollow-core construction.
Analyze known, constant-resistance body of the present utility model within the liner, constant resistance can be overcome, slide, there is large deformation characteristic, draw and constantly, in physical simulation experiment research of can avoiding coming down, traditional anchor cable used can not adapt to slope rock mass constant resistance and large deformation and the phenomenon destroyed occurs in current the laboratory in, is particularly useful for reinforcing Soft Rock Slope large deformation destruction in the indoor ratio of similitude physical model experiment processes such as landslide, earthquake, rubble flow, monitors, the research of early warning.
Accompanying drawing explanation
Fig. 1 be the utility model embodiment face structural representation;
Fig. 2 is the plan structure schematic diagram of the utility model embodiment;
Fig. 3 is the left TV structure schematic diagram of the utility model embodiment;
Fig. 4 is the sectional structure schematic diagram of A-A along the line in Fig. 1;
Fig. 5 is the application structure schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As Figure 1-Figure 4, the utility model embodiment comprises sleeve pipe 1, liner 2, slide head 3, constant-resistance body 4 and wire rope 5 (shown in Fig. 5).
Specifically, sleeve pipe 1 is metal material, and intensity is higher, and is coated with anticorrosive coat (via the preservative treatment such as nickel plating, chromium plating, forming anticorrosive coat).Sleeve pipe 1 in a tubular form, such as round steel pipe.
Liner 2 also in a tubular form, but be irregular round tubular structure, its first end (left end such as Fig. 1, Fig. 4) outer wall is provided with step (unmarked), first end inwall is horn-like, as shown in Figure 4, first end inwall be dip plane 21 outwards, to circumference tilt, thus form horn-like structure.Sleeve pipe 1 is sheathed on liner 2 closely, more as shown in Figure 4, the first end end face of sleeve pipe 1 supports the step of liner 2 first end, and its second end end face is concordant with the second end end face of liner 2.
Constant-resistance body 4 is metal material, is also coated with anticorrosive coat, and in column, axially run through liner 2 inner, coaxially arrange with liner 2, outer wall contacts substantially with the inwall of liner 2.The first end end face of constant-resistance body 4 is at least concordant with the first end end face of liner 2, and the second end that the second end extends to liner 2 is outside, form through hole 41 to facilitate, and wire rope 5 is fixing through this through hole 41, realizes being fixedly connected with of wire rope 5 and constant-resistance body 4.
Slide head 3 metal material, identical with constant-resistance body 4, in wedge shape, during original state, slide head 3 is positioned at liner 2 hydraucone position.Preferably, slide head 3 is multiple, is circumferentially arranged on the side of constant-resistance body 4 equably.Each slide head 3 greatly end is fixed on constant-resistance body 4 first end side, the first end inwall of small end then conflict liner 2.Preferably, the large end of slide head 3 is threaded with constant-resistance body 4.As shown in Figure 5, wire rope 5 one end is connected with the second end of constant-resistance body 4.The hardness of liner 2 is less than the hardness of constant-resistance body 4, and preferably, liner 2 is duroplasts material, such as engineering plastics etc.
In the present embodiment, when the pulling force that constant-resistance body 4 is subject to wire rope 5 is greater than constant-resistance body 4, friction force between slide head 3 and liner 2, constant-resistance body 4 produces uniform constant-resistance frictional slip along liner 2.
With regard to the principle of the present embodiment, be described in further detail below:
Liner 2 is processed by duroplasts, and constant-resistance body 4 is metal material, and the hardness of the liner 2 made is lower than constant-resistance body 4, and when suffered by constant-resistance body 4, external force is greater than the friction force between slide head 3 and liner 2, constant-resistance body 4 produces uniform constant-resistance frictional slip along liner 2.Because liner 2 material is soft compared with constant-resistance body 4 material, in frictional slip process, constant-resistance body 4 can not wear and tear, and avoids the reduction gradually of constant-resistance, ensures constant frictional resistance.
As shown in Figure 5, when applying the present embodiment and being used for the experiment of indoor landslide, the indoor landslide physical of building comprises two parts: sliding bed 6, sliding mass 7.Sliding bed 7 and sliding mass 6 are split by potential water use 8, and potential water use 8 can be a slipping plane (width is ignored), also can be a slip band (having one fixed width).When occurring when coming down, sliding mass 7, along potential water use 8 slippage downwards, produces relative displacement with sliding bed 6.
Then, the present embodiment is assembled, according to demand regulating constant resistance, and the present embodiment is fixed in sliding bed 6.Drilling deep hole 9 on sliding bed 6 and sliding mass 7, deep hole 9 aperture 1cm is advisable.Wire rope 5 runs through sliding mass 7 and sliding bed 6 by deep hole 9, and the inner is connected with the through hole 41 on constant-resistance body 4, and outer end is fixed by ground tackle.So just constitute a complete dynamometric system.
The principle of work of this dynamometric system is: when sliding force F is greater than skid resistance, sliding mass 7 starts to glide along potential water use 8, because wire rope 5 runs through whole sliding mass 7 by deep hole 9, when there is slippage along potential water use 8 in sliding mass 7, the sliding force F produced must be loaded on wire rope 5, by the transmission of wire rope 5, be delivered on constant-resistance body 4, therefore, first acting force acts on wire rope 5, then by wire rope 5, power is conducted to the high precision mechanics sensor measuring equipment on earth's surface, realize the measurement to deep sliding force.When sliding force F is less than the friction force between liner 2 and slide head 3, wire rope 5 produces elastic deformation; When sliding force F is greater than the friction force between liner 2 and slide head 3, there is slippage along liner 2 in constant-resistance body 4, produces malformation, and the object done like this is that when preventing that external force is excessive exceedes the yield strength of wire rope 5, wire rope 5 is pulled off destruction.Therefore constant-resistance lower than the yield strength of wire rope 5, must guarantee that wire rope 5 is in elastic range internal strain.The adjustment of constant-resistance relies on slide head 3 to realize entirely.
From the above, in order to adjust constant-resistance, the present embodiment have employed slide head 3 and designs.Due to each indoor landslide physical simulation experiment used to build side slope material different, so sliding force difference in size when landslide is destroyed is larger, for meeting experiment demand, present embodiments provide the project organization of slide head 3, because slide head 3 can regulating constant resistance, therefore also constant-resistance regulator 3 can be referred to as.Simple speech it, slide head 3 is the screw at a kind of point end, by the extension elongation of adjusting screw, controls the size of constant-resistance.When screw overhang is larger, the friction force between constant-resistance body 4 and liner 2 strengthens, and constant-resistance increases; When screw overhang is less, the friction force between constant-resistance body 4 and liner 2 reduces, the corresponding reduction of constant-resistance.By the size of this structure just unusual adjustment constant-resistance of aspect, to meet the demand of physical model experiment in different chamber.
When applying the present embodiment, due to counting loss, interfere phenomenon etc., the event that constant-resistance is greater than wire rope yield strength may be there is, Given this, position constant-resistance body 4 being arranged slide head 3 can be designed to hollow-core construction, powerful pressure can force slide head 3 to be pressed into this hollow-core construction a little, thus reduces constant-resistance, avoids wire rope to break.
Summary, the utility model provides overall process laboratory physical simulation experiment deep, the landslide mechanical quantity data collector of complete set, owing to having the function of opposing large deformation, can to the monitoring of landslide overall process and early warning.
As known by the technical knowledge, the utility model can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Allly all to be included in the utility model within the scope of the utility model or being equal to the change in scope of the present utility model.
Claims (6)
1. be applicable to a constant resistance and large deformation anchor cable device for indoor physical model experiment, it is characterized in that, comprising:
Sleeve pipe, metal material, and be coated with anticorrosive coat, in a tubular form;
Liner, in a tubular form, first end outer wall is provided with step, first end inwall is horn-like, described sleeve pipe be sheathed on closely described in be lining with, and the first end end face of described sleeve pipe supports the step of described liner first end, and the second end end face of described sleeve pipe is concordant with the second end end face of described liner;
Constant-resistance body, metal material, is also coated with anticorrosive coat, in column, runs through described liner, and coaxially arranges with described liner, and first end end face is at least concordant with the first end end face of described liner, and the second end that the second end extends to described liner is outside;
Slide head, metal material, in wedge shape, large end is fixed on described constant-resistance body first end side, and small end is then conflicted the first end inwall of described liner;
Wire rope, one end is connected with the second end of described constant-resistance body;
Wherein, the hardness of described liner is less than the hardness of described constant-resistance body and slide head, when the pulling force that described constant-resistance body is subject to described wire rope is greater than the friction force between described slide head and described liner, described constant-resistance body produces uniform constant-resistance frictional slip along described liner.
2. the constant resistance and large deformation anchor cable device being applicable to indoor physical model experiment according to claim 1, it is characterized in that, described liner is duroplasts material.
3. the constant resistance and large deformation anchor cable device being applicable to indoor physical model experiment according to claim 1, it is characterized in that, the large end of described slide head is threaded with described constant-resistance body.
4. the constant resistance and large deformation anchor cable device being applicable to indoor physical model experiment according to claim 1, it is characterized in that, described slide head is multiple, circumferentially, is evenly arranged at the side of described constant-resistance body.
5. the constant resistance and large deformation anchor cable device being applicable to indoor physical model experiment according to claim 1, it is characterized in that, the second end of described constant-resistance body is provided with a through hole, and described steel wire penetrating is also fixed in described through hole.
6. the constant resistance and large deformation anchor cable device being applicable to indoor physical model experiment according to claim 1, it is characterized in that, the position described constant-resistance body being arranged described slide head is hollow-core construction.
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| CN201520792027.9U CN205120709U (en) | 2015-10-08 | 2015-10-08 | Constant -resistance large deformation anchor rope device suitable for experiment of indoor physical model |
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| CN201520792027.9U CN205120709U (en) | 2015-10-08 | 2015-10-08 | Constant -resistance large deformation anchor rope device suitable for experiment of indoor physical model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931536A (en) * | 2016-04-28 | 2016-09-07 | 何满潮 | Miniature constant resistance large-deformation anchor cable and constant resistance device thereof and monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931536A (en) * | 2016-04-28 | 2016-09-07 | 何满潮 | Miniature constant resistance large-deformation anchor cable and constant resistance device thereof and monitoring system |
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