CN204330440U - The anti-settling instrument of direct shear test structural plane sample - Google Patents
The anti-settling instrument of direct shear test structural plane sample Download PDFInfo
- Publication number
- CN204330440U CN204330440U CN201420779022.8U CN201420779022U CN204330440U CN 204330440 U CN204330440 U CN 204330440U CN 201420779022 U CN201420779022 U CN 201420779022U CN 204330440 U CN204330440 U CN 204330440U
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- fixture
- belt
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- horizontal trough
- longitudinal
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Abstract
The utility model discloses a kind of anti-settling instrument of direct shear test structural plane sample, comprise base, base is installed with support, the upper end of support is provided with perforation and is installed with balance stem by nut, the sidewall of balance stem is provided with screw thread, its one end is fixed with counterbalance weight, the other end is fixed with spanner clamper by web member, spanner clamper comprises two groups four horizontal trough of belt fixtures and longitudinal fixture, every two horizontal trough of belt fixtures and two longitudinal fixtures are in " well " font, fixedly mounted by vertical leg spiral, wherein be provided with leveling bubble in horizontal trough of belt fixture, longitudinal fixture is fixed in the groove of horizontal trough of belt fixture by horizontal nut.The utility model not only structure simple, dismantle easy, easy to operate, and with low cost, effect is better.
Description
technical field:
The utility model relates in rock mechanics " XJ-type portable type boxshear apparatus measures structural plane shear resistance " adopts the manufacture technology field of structural plane model, particularly a kind of anti-settling instrument of direct shear test structural plane sample.
background technology:
In order to evaluate the stability of rock mass discontinuity in Geotechnical Engineering, need the Shear Strength Index being obtained structural plane by direct shear test.In correlation engineering fields such as geology, water conservancy, railway, highway, municipal administrations, the Shear Strength Index of structural plane is one of very important mechanics parameter in engineering design and stability evaluation of rock mass, if Shear Strength Index is inaccurate cause relatively large deviation by directly causing during engineer applied.The Shear Strength Index of rock mass discontinuity generally will be determined by shop experiment or in-situ test, but because in-situ test is to many requirements such as rock outcrop, testing equipment and test sites, many employings Experimental Method in Laboratory obtains the Shear Strength Index of rock mass discontinuity, and wherein most widely used is adopt XJ mono-type portable type boxshear apparatus to carry out rock mass discontinuity direct shear test.Carrying out in direct shear test, first to make structural plane model, in manufacturing process, there is more deficiency have much room for improvement, wherein the very important point is: due to the mobility of sand-cement slurry and the Gravitative Loads of rock mass discontinuity sample, the phenomenon of the uneven sedimentation of meeting in sand-cement slurry process of setting of the sample in original mold.
Require that the point of resultant force of Normal stress and shear load is positioned at the center of shear surface according to joint straight shear test related specifications, Normal stress central axis is in shear surface and by its center.And in the manufacturing process of structural plane model, due to the phenomenon of the uneven sedimentation of structural fece sample, structural plane is caused to tilt out-of-level, there is error angle, made structural plane model is when carrying out direct shear test, structural plane can not be vertical with vertical force added by direct shear apparatus, causes normal force and shear direction out of plumb; If secondly structural fece sample settling amount in the original mold of sand-cement slurry is excessive, structural plane even can be caused to sink down in sand-cement slurry, then structural plane model makes unsuccessfully; Moreover to cause structural fece sample to exceed original mold frame many owing to not carrying out pressing pressure, after causing upper and lower model to put into shear box, jacking header cannot head into, and causes this structural plane model to make unsuccessfully.Therefore, in sample making course, how to avoid the appearance of above-mentioned three kinds of situations, just become the accuracy and efficiency problem demanding prompt solution comparing and significantly improve test.The utility model is intended to the non-uniform settling eliminating above-mentioned indication, by using spanner clipping anti-settling instrument to be maintained static by structural fece sample, effectively can avoid the generation of the non-uniform settling phenomenon of structural fece sample.
utility model content:
For solving the shortcoming of the non-uniform settling existed when structural fece sample makes in prior art, the utility model provides a kind of anti-settling instrument of direct shear test structural plane sample, its not only structure simple, dismantle easy, easy to operate, and with low cost, effect is better.
The technical solution adopted in the utility model is:
The anti-settling instrument of direct shear test structural plane sample, comprise base, base is installed with support, it is characterized in that: the upper end of described support is provided with perforation and is installed with balance stem by nut, the sidewall of balance stem is provided with screw thread, its one end is fixed with counterbalance weight, the other end is fixed with spanner clamper by web member, spanner clamper comprises two groups four horizontal trough of belt fixtures and longitudinal fixture, every two horizontal trough of belt fixtures and two longitudinal fixtures are in " well " font, fixedly mounted by vertical leg spiral, wherein be provided with leveling bubble in horizontal trough of belt fixture, longitudinal fixture is fixed in the groove of horizontal trough of belt fixture by horizontal nut.
The anti-settling instrument of described direct shear test structural plane sample, is characterized in that: described spanner clamper is made up of upper and lower two parts fixture, and each group fixture includes two horizontal trough of belt fixtures and two longitudinal fixtures.
The anti-settling instrument of described direct shear test structural plane sample, is characterized in that: the two ends of described horizontal trough of belt fixture, all with chute, are left threaded hole and fix longitudinal fixture by horizontal nut in the middle part of chute.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model principle is simple, directly perceived, and not only balance stem can rotate, and also can clip sample and move up and down in chute, and expanding can the altitude range of clamp structure face style and the operating space of experiment;
2, the utility model is provided with counterbalance weight, can the balance of conditioning instrumentation entirety well, utilizes the leveling bubble on horizontal trough of belt fixture simultaneously, can fine tuning fixture, makes sample level, the anti-settling is comparatively clamping determine sample have better equilibrium activity;
3, the utility model structure is simple, be easy to carry, handled easily, be easy to dismounting and cost lower, result of use is better;
4, the utility model can play the effect of fixed sturcture interview sample, makes it be fixed on a certain height, and not because there is non-uniform settling under the mobility of sand-cement slurry and the Gravitative Loads of sample;
5, the utility model is by the clamping action of key-type clamper, can well interview sample and not cause its arbitrarily movement by clamp structure, thus make sample keep certain height and level.
accompanying drawing illustrates:
Fig. 1 is the utility model structural representation.
embodiment:
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail:
The anti-settling instrument of direct shear test structural plane sample, comprise base 1, base 1 is installed with support 2, the upper end of support 2 is provided with perforation and is installed with balance stem 4 by nut 3, the sidewall of balance stem 4 is provided with screw thread, its one end is fixed with counterbalance weight 5, the other end is fixed with spanner clamper by web member, spanner clamper comprises two groups four horizontal trough of belt fixtures 6 and longitudinal fixture 7, every two horizontal trough of belt fixtures 6 and two longitudinal fixtures 7 are in " well " font, fixedly mounted by vertical leg spiral 8, wherein be provided with leveling bubble 10 in horizontal trough of belt fixture 6, longitudinal fixture 7 is fixed in the groove of horizontal trough of belt fixture 6 by horizontal nut 9.
Spanner clamper is made up of upper and lower two parts fixture, each group fixture includes two horizontal trough of belt fixtures 6 and two longitudinal fixtures 7, the two ends of horizontal trough of belt fixture 6, all with chute, are left threaded hole and fix longitudinal fixture 7 by horizontal nut 9 in the middle part of chute.
During use, horizontal nut 9 by loosening, tightening the distance regulated between horizontal trough of belt fixture 6, to reach the object of applicable spanner gripper specimen size; And leveling bubble 10 can reach terminal level by fine adjustment of vertical foot screw 8, spanner clamper fixture inwall is comparatively coarse; When sample is between horizontal trough of belt fixture 6 and longitudinal fixture 7, the size of alignment jig clamping is carried out by relaxation level nut 9, sample is fixed between horizontal trough of belt fixture 6 and longitudinal fixture 7, now tightens horizontal nut 9 to ensure that sample is steadily clamped.
In the manufacturing process of the structural plane model before direct shear test, utilize fixture inwall to fix structural fece sample, and be placed in directly over test sample-producing die central authorities, then build a certain amount of sand-cement slurry in original mold, after reaching a certain height, start sample down slowly to hang from center.Unclamp nut, shifting balance bar 4, makes the face of being cut of structural fece sample only exceed the about 4-5mm of original mold frame, and utilizes the leveling bubble 10 on horizontal trough of belt fixture 6 to carry out leveling, then balance stem 4 both sides nut 3 is tightened fixing, and then joints cement mortar fill up tamping.When structural plane model makes, by using the anti-settling instrument of structural fece sample, making it maintain static structural plane clamping, avoiding the phenomenon of its uneven sedimentation.
Above-described embodiment is only preferably embodiment of the present utility model, and in addition, the utility model can also have other implementations.It should be noted that, under the prerequisite not departing from the utility model design, any apparent improvement and modification all should fall within protection domain of the present utility model.
Claims (3)
1. the anti-settling instrument of direct shear test structural plane sample, comprise base, base is installed with support, it is characterized in that: the upper end of described support is provided with perforation and is installed with balance stem by nut, the sidewall of balance stem is provided with screw thread, its one end is fixed with counterbalance weight, the other end is fixed with spanner clamper by web member, spanner clamper comprises two groups four horizontal trough of belt fixtures and longitudinal fixture, every two horizontal trough of belt fixtures and two longitudinal fixtures are in " well " font, fixedly mounted by vertical leg spiral, wherein be provided with leveling bubble in horizontal trough of belt fixture, longitudinal fixture is fixed in the groove of horizontal trough of belt fixture by horizontal nut.
2. the anti-settling instrument of direct shear test structural plane sample according to claim 1, is characterized in that: described spanner clamper is made up of upper and lower two parts fixture, and each group fixture includes two horizontal trough of belt fixtures and two longitudinal fixtures.
3. the anti-settling instrument of direct shear test structural plane sample according to claim 1, is characterized in that: the two ends of described horizontal trough of belt fixture, all with chute, are left threaded hole and fix longitudinal fixture by horizontal nut in the middle part of chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779022.8U CN204330440U (en) | 2014-12-10 | 2014-12-10 | The anti-settling instrument of direct shear test structural plane sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779022.8U CN204330440U (en) | 2014-12-10 | 2014-12-10 | The anti-settling instrument of direct shear test structural plane sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204330440U true CN204330440U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420779022.8U Expired - Fee Related CN204330440U (en) | 2014-12-10 | 2014-12-10 | The anti-settling instrument of direct shear test structural plane sample |
Country Status (1)
| Country | Link |
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| CN (1) | CN204330440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502164A (en) * | 2014-12-10 | 2015-04-08 | 方堃 | Anti-sedimentation instrument for direct shear test structural surface sample |
-
2014
- 2014-12-10 CN CN201420779022.8U patent/CN204330440U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502164A (en) * | 2014-12-10 | 2015-04-08 | 方堃 | Anti-sedimentation instrument for direct shear test structural surface sample |
| CN104502164B (en) * | 2014-12-10 | 2018-01-19 | 方堃 | The anti-settling instrument of direct shear test structural plane sample |
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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: 20150513 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |