CN215105463U - Foundation structure for rock slab load test - Google Patents
Foundation structure for rock slab load test Download PDFInfo
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- CN215105463U CN215105463U CN202121020309.9U CN202121020309U CN215105463U CN 215105463 U CN215105463 U CN 215105463U CN 202121020309 U CN202121020309 U CN 202121020309U CN 215105463 U CN215105463 U CN 215105463U
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Abstract
The utility model relates to a foundation structure for dull and stereotyped load test of rock, foundation structure's top is arranged in to the bearing plate, and this foundation structure includes: the lifting pieces are arranged on the bedrock at intervals and are adjustable in height; the fixed plate is fixed at the tops of the plurality of lifting pieces and used for placing the bearing plate, and the height of the corresponding position of the fixed plate is changed by adjusting the heights of the plurality of lifting pieces, so that the fixed plate is horizontal; and pouring a cushion layer formed between the fixed plate and the bedrock so as to compact the gap between the fixed plate and the bedrock. The utility model discloses the effectual roughness of having solved bearing plate below foundation structure is difficult to satisfy the problem of experimental requirement, through adjusting foundation structure's roughness to accord with experimental requirement, and then place the bearing plate at foundation structure's top, in order to carry out dull and stereotyped loading test to the basement rock, reduce the influence of roughness to the test result, make the test result more accurate.
Description
Technical Field
The utility model relates to a building construction field refers in particular to a foundation structure for dull and stereotyped load test of rock.
Background
The rock slab load test is a slab load test performed on bedrock to determine a characteristic value of the bearing capacity of the bedrock, so that a basis is provided for building foundation design, the deformation of the bedrock is in millimeter level in the implementation process of the rock slab load test, and the test failure is possibly caused by errors exceeding 0.01mm, so that the test has extremely high requirements on the flatness of a foundation structure below a bearing plate, and the flatness of the foundation structure is less than 0.1 mm.
At present, the flatness of bedrock can be controlled within 1mm through a repeated leveling process, a cushion layer needs to be arranged between the bedrock and a bearing plate, the cushion layer is formed by pouring self-leveling early-strength high-strength grouting material, but the self-leveling through the grouting material is difficult to meet the requirement of the flatness of 0.1mm in practice, the test requirement cannot be met, and the influence on the test result is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a foundation structure for dull and stereotyped load test of rock, the roughness of having solved bearing plate below foundation structure is difficult to satisfy the problem of experimental requirement, through the roughness of adjusting foundation structure to accord with experimental requirement, and then place the bearing plate at foundation structure's top, in order to carry out dull and stereotyped load test to the basement rock, reduce the influence of roughness to the test result, make the test result more accurate.
The technical scheme for realizing the purpose is as follows:
the utility model provides a foundation structure for dull and stereotyped load test of rock, foundation structure's top is arranged in to the bearing plate, and this foundation structure includes:
the lifting pieces are arranged on the bedrock at intervals and are adjustable in height;
the fixed plate is fixed at the tops of the plurality of lifting pieces and used for placing the bearing plate, and the height of the corresponding position of the fixed plate is changed by adjusting the heights of the plurality of lifting pieces, so that the fixed plate is horizontal; and
and pouring a cushion layer formed between the fixed plate and the bedrock so as to compact the gap between the fixed plate and the bedrock.
The utility model discloses a foundation structure for dull and stereotyped load test of rock, height through adjusting the lift piece corresponds the height of position in order to change the fixed plate, make the fixed plate level, and then pour the formation bed course between fixed plate and basement rock, with clearance between closely knit fixed plate and the basement rock, thereby form foundation structure, place the bearing plate on foundation structure, can carry out dull and stereotyped load test to the basement rock, the roughness of having solved bearing plate below foundation structure is difficult to satisfy the problem of experimental requirement, roughness through adjusting foundation structure, in order to accord with experimental requirement, and then place the bearing plate at foundation structure's top, in order to carry out dull and stereotyped load test to the basement rock, reduce the influence of roughness to the test result, make the test result more accurate.
The utility model discloses a foundation structure for dull and stereotyped load test of rock further improves and lies in, still encloses the fender including the bottom that is fixed in the fixed plate and the transversal flexibility of personally submitting the closure form, through the height of adjusting a plurality of lifters for the fixed plate level, and the bottom surface that the flexibility encloses the fender is laminated in the basement rock, thereby the flexibility encloses fender, fixed plate and basement rock and encloses to close and form and pour the space, and this bed course is filled in pouring the space.
The utility model discloses a foundation structure for dull and stereotyped load test of rock's further improvement lies in, still including seting up in the slip casting hole of fixed plate, pours the thick liquids through the slip casting hole to pouring in the space to form the bed course.
The utility model discloses a foundation structure for dull and stereotyped load test of rock's further improvement lies in, still include the interval set up in the fixed plate and with pour a plurality of exhaust holes that the space is linked together.
The utility model discloses a further improvement of foundation structure for dull and stereotyped load test of rock lies in, and this flexibility encloses the steel loop that keeps off the rubber ring and fix the cover including being fixed in the bottom of fixed plate and locates the rubber ring, and the bottom surface of this steel loop and the bottom surface parallel and level of rubber ring have between the top surface of steel loop and the bottom surface of fixed plate and set for the interval.
The utility model discloses a further improvement of the foundation structure for the rock slab load test lies in that the fixed plate is provided with a through hole corresponding to the lifting piece;
the lifting piece comprises a vertical screw rod arranged in bedrock and penetrating through the through hole and a supporting nut screwed on the screw rod and larger than the through hole in size, the fixed plate is arranged at the top of the supporting nut, the supporting nut is screwed to adjust the position of the supporting nut on the screw rod, and the fixed plate is driven to lift so that the fixed plate is horizontal.
The foundation structure for the rock slab load test of the utility model is further improved in that a pit is formed at the position of the bedrock corresponding to the lifting piece;
this lift piece is still including arranging the base of the bottom surface of pit in, and the screw rod is vertical to be set firmly in the top surface of base, and the degree of depth that highly is greater than the pit of screw rod for the top portion of screw rod outwards stretches out and wears to locate the through-hole from the top of pit.
The utility model discloses a further improvement of foundation structure for dull and stereotyped load test of rock lies in, and this lifter still includes the spiro union and fits the screw rod and be located the stop nut of the top of fixed plate, through revolving the twist stop nut for stop nut supports the top surface of fixed plate, thereby the fixed plate clamping is between stop nut and support nut.
The utility model discloses a foundation structure's for dull and stereotyped load test of rock further improvement lies in, and this bed course is pour by self-compaction high-strength self-leveling grout material and is formed.
The utility model discloses a further improvement of foundation structure for dull and stereotyped load test of rock lies in, still including the handle that is fixed in the lateral part of fixed plate.
Drawings
Figure 1 is the utility model discloses a side section view for dull and stereotyped load test's of rock foundation structure.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
Figure 3 is the utility model discloses a foundation structure's for dull and stereotyped load test of rock top view.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1, the utility model provides an infrastructure for dull and stereotyped load test of rock, height through adjusting the lift piece corresponds the height of position in order to change the fixed plate, make the fixed plate level, and then pour the formation bed course between fixed plate and basement rock, with clearance between closely knit fixed plate and the basement rock, thereby form foundation structure, place the bearing plate on foundation structure, can carry out dull and stereotyped load test to the basement rock, the problem that the roughness of having solved bearing plate below foundation structure is difficult to satisfy experimental requirement, through the roughness of adjusting foundation structure, with accord with experimental requirement, and then place the bearing plate at foundation structure's top, in order to carry out dull and stereotyped load test to the basement rock, reduce the influence of roughness to the test result, make the test result more accurate. The foundation structure for the flat plate rock load test of the invention is explained below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a side sectional view of the foundation structure for the slab rock load test of the present invention. The foundation structure for the flat plate rock load test of the present invention is described below with reference to fig. 1.
Combine fig. 1 to show, the utility model is used for dull and stereotyped load test's of rock foundation structure, bearing plate arrange foundation structure's top in, this foundation structure includes:
the plurality of lifting pieces 11 are arranged on the bedrock 21 at intervals and have adjustable heights;
the fixed plate 12 is fixed on the tops of the lifting pieces 11 and used for placing the bearing plates, and the height of the corresponding position of the fixed plate 12 is changed by adjusting the heights of the lifting pieces 11, so that the fixed plate 12 is horizontal; and
and pouring the cushion layer 13 formed between the fixed plate 12 and the bedrock 21 to compact the gap between the fixed plate 12 and the bedrock 21.
Preferably, the cushion layer 13 is formed by pouring self-compacting high-strength self-leveling grouting material.
Preferably, the fixing plate 12 is a steel plate.
Specifically, the device further comprises a handle 123 fixed to a side portion of the fixing plate 12.
As a preferred embodiment of the present invention, as shown in fig. 2, the bottom of the fixed plate 12 and the cross section of the flexible enclosure 14 with a closed shape are further included, and the height of the plurality of lifting members 11 is adjusted, so that the fixed plate 12 is horizontal, and the bottom surface of the flexible enclosure 14 is attached to the bedrock 21, so that the flexible enclosure 14, the fixed plate 12 and the bedrock 21 are enclosed to form a pouring space, and the cushion layer 13 is filled in the pouring space.
Further, as shown in fig. 3, the cushion further includes a grouting hole 121 formed in the fixing plate 12, and a slurry is poured into the pouring space through the grouting hole 121 to form the cushion layer 13.
Specifically, the concrete structure further comprises a plurality of exhaust holes 122 which are arranged on the fixing plate 12 at intervals and communicated with the pouring space, and when the cushion layer 13 is formed by pouring, air in the pouring space can be exhausted from the exhaust holes 122.
Further, referring to fig. 2, the flexible enclosure 14 includes a rubber ring 141 fixed to the bottom of the fixed plate 12 and a steel ring 142 fixed to the rubber ring 141, wherein the bottom surface of the steel ring 142 is flush with the bottom surface of the rubber ring 141, a predetermined distance is provided between the top surface of the steel ring 142 and the bottom surface of the fixed plate 12, and the steel ring 142 and the fixed plate 12 have the predetermined distance therebetween and the rubber ring 141 is elastically deformable, so that even when the distance between the fixed plate 12 and the bedrock 21 is small, the steel ring 142 can still be inserted into the gap between the fixed plate 12 and the bedrock 21 by the elastic deformation of the rubber ring 141 and seal the gap between the steel ring 142 and the fixed plate 12.
Preferably, the fixed plate 12 is circular, and the flexible enclosure 14 is annular.
Furthermore, the fixing plate 12 is provided with a through hole corresponding to the lifting member 11;
the lifting member 11 includes a screw 112 vertically disposed on the bedrock 21 and penetrating through the through hole, and a support nut 113 screwed on the screw 112 and having a size larger than the through hole, the fixing plate 12 is disposed on the top of the support nut 113, the support nut 113 is screwed to adjust the position of the support nut 113 on the screw 112, and the fixing plate 12 is driven to lift and lower, so that the fixing plate 12 is horizontal.
Specifically, a pit 211 is formed in the bedrock 21 at a position corresponding to the lifting piece 11;
the lifting member 11 further comprises a base 111 disposed on the bottom surface of the concave pit 211, the screw rod 112 is vertically and fixedly disposed on the top surface of the base 111, and the height of the screw rod 112 is greater than the depth of the concave pit 211, so that the top end portion of the screw rod 112 extends out from the top of the concave pit 211 and penetrates through the through hole.
Preferably, the lifting member 11 further comprises a stop nut 114 screwed on the screw 112 and located above the fixing plate 12, and the fixing plate 12 is clamped between the stop nut 114 and the support nut 113 by screwing the stop nut 114 so that the fixing plate 12 is pressed against the top surface of the fixing plate 12, thereby preventing the fixing plate 12 from being lifted upwards by grout when grout is poured.
The specific implementation manner of the utility model is as follows:
excavating a plurality of pits 211 in the bedrock 21, and placing the base of the lifting piece 11 on the bottom surface of the pits 211;
screwing the support nut 113 to adjust the position of the support nut 113 on the screw rod 112, so as to change the height of the corresponding part of the fixing plate 12, so that the fixing plate 12 is horizontal, screwing the limit nut 114 to abut against the top surface of the fixing plate 12, so that the fixing plate 12 is clamped between the limit nut 114 and the support nut 113, and the bottom surface of the flexible enclosure 14 is attached to the top surface of the bedrock 21;
grout is poured into the pouring space through the grouting holes 121, and in the process of pouring the grout, air in the pouring space can be discharged outwards through the exhaust holes 122, so that a cushion layer 13 filled in the pouring space is formed to fill a gap between the fixing plate 12 and the bedrock 21;
and a bearing plate is placed at the top of the fixed plate 12, so that a flat plate load test can be performed on the bedrock 21.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (10)
1. A substructure for a flat plate load test of rock, on top of which a bearing plate is placed, characterized in that the substructure comprises:
the lifting pieces are arranged on the bedrock at intervals and are adjustable in height;
the fixing plate is fixed at the tops of the lifting pieces and used for placing the bearing plate, and the heights of the lifting pieces are adjusted to change the heights of the corresponding positions of the fixing plate, so that the fixing plate is horizontal; and
and pouring a cushion layer formed between the fixed plate and the bedrock so as to compact the gap between the fixed plate and the bedrock.
2. The foundation structure for the rock slab load test of claim 1, further comprising a flexible enclosure fixed at the bottom of the fixed plate and having a closed cross section, wherein the fixed plate is made horizontal by adjusting the heights of the plurality of lifting members, the bottom surface of the flexible enclosure is attached to the bedrock, so that the flexible enclosure, the fixed plate and the bedrock enclose a casting space, and the cushion layer is filled in the casting space.
3. The substructure for a slab load test of rocks according to claim 2, further comprising grouting holes opened in said fixing plate, through which grouting holes grout is poured into said casting space to form said cushion layer.
4. The substructure for a slab load test of rocks according to claim 2, further comprising a plurality of vent holes spaced apart from said fixed slab and communicating with said casting space.
5. The substructure for a rock slab load test of claim 2, wherein said flexible enclosure comprises a rubber ring fixed to the bottom of said fastening plate and a steel ring fixed to said rubber ring, wherein the bottom surface of said steel ring is flush with the bottom surface of said rubber ring, and the top surface of said steel ring is spaced from the bottom surface of said fastening plate by a predetermined distance.
6. The foundation structure for the rock slab load test as claimed in claim 1, wherein the fixing plate is provided with a through hole corresponding to the lifting member;
the lifter includes vertical arranging in the basement rock and wears to locate the screw rod and the spiro union of through-hole are in screw rod and size are greater than the support nut of through-hole, the fixed plate is arranged in the top of support nut is through revolving wrong support nut, in order to adjust support nut in the position of screw rod, and drive the fixed plate goes up and down, makes the fixed plate level.
7. A substructure for rock flat load testing according to claim 6, characterized in that the bedrock is formed with pits corresponding to the positions of the lifting members;
the lifting piece further comprises a base arranged on the bottom surface of the pit, the screw rod is vertically and fixedly arranged on the top surface of the base, the height of the screw rod is larger than the depth of the pit, and the top end portion of the screw rod extends outwards from the top of the pit and penetrates through the through hole.
8. The substructure for a rock flat load test of claim 6, wherein said lifting member further comprises a stop nut screwed to said screw and located above said holding plate, said holding plate being clamped between said stop nut and said support nut by screwing said stop nut so that said stop nut abuts against a top surface of said holding plate.
9. The foundation structure for rock flat load testing of claim 1, wherein the bedding layer is cast from a self-compacting high-strength self-leveling grouting material.
10. The substructure for a rock flat load test of claim 1, further comprising handles fixed to the sides of said holding plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121020309.9U CN215105463U (en) | 2021-05-13 | 2021-05-13 | Foundation structure for rock slab load test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121020309.9U CN215105463U (en) | 2021-05-13 | 2021-05-13 | Foundation structure for rock slab load test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215105463U true CN215105463U (en) | 2021-12-10 |
Family
ID=79296597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121020309.9U Active CN215105463U (en) | 2021-05-13 | 2021-05-13 | Foundation structure for rock slab load test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215105463U (en) |
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2021
- 2021-05-13 CN CN202121020309.9U patent/CN215105463U/en active Active
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