CN211060926U - A work base observation mound for deep overburden - Google Patents
A work base observation mound for deep overburden Download PDFInfo
- Publication number
- CN211060926U CN211060926U CN201922082093.8U CN201922082093U CN211060926U CN 211060926 U CN211060926 U CN 211060926U CN 201922082093 U CN201922082093 U CN 201922082093U CN 211060926 U CN211060926 U CN 211060926U
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- China
- Prior art keywords
- observation pier
- observation
- pier
- jet grouting
- horizontal displacement
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 30
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 210000002435 tendon Anatomy 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model provides a working base point observation pier for a deep covering layer, which comprises a covering layer; a rotary jet grouting pile is poured in the covering layer; reinforcing steel bars are embedded in the jet grouting piles, one ends of the jet grouting piles are inserted into the substrate, sedimentation deformation observation piers are poured at the other ends of the jet grouting piles, horizontal displacement observation piers are poured on the sedimentation deformation observation piers, and the sedimentation deformation observation piers and the horizontal displacement observation piers form observation piers; a level mark is buried at a right angle of the top surface of the settlement deformation observation pier, and a forced centering base is buried at the center of the top of the horizontal displacement observation pier. The utility model discloses a will spout stake soon and during tendon squeezes into the stratum of relatively solid stable such as basement rock or weak morals and manners layer, reduced deep overburden and subsided the influence to the work basic point, improved the stability and the reliability of work basic point, can regard as the work basic point that construction period and operation period surveyd, still have concurrently simultaneously and subside the effect that deformation observation work basic point and horizontal displacement surveyd the work basic point.
Description
Technical Field
The utility model relates to a mound is surveyd to work basic point for deep overburden belongs to safety monitoring technical field.
Background
In the monitoring of horizontal displacement and settlement deformation of buildings, in order to ensure the stability and reliability of a working base point, the working base point is mostly arranged outside the deformation influence range of the buildings and on a relatively stable bedrock or a building foundation which is built for a long time. In practical application, a working base point is often buried in a region with flat terrain and a deep covering layer, and when no solid bedrock is available around a building under construction and the building is built for a long time, a base point observation pier capable of keeping stability in the deep covering layer is needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a mound is surveyd to work base point for deep overburden can solve the problem of work base point stability on the deep overburden effectively.
The utility model discloses a following technical scheme can realize.
The utility model provides a working base point observation pier for a deep covering layer, which comprises a covering layer; a rotary jet grouting pile is poured in the covering layer; reinforcing steel bars are embedded in the jet grouting piles, one ends of the jet grouting piles are inserted into the substrate, sedimentation deformation observation piers are poured at the other ends of the jet grouting piles, horizontal displacement observation piers are poured on the sedimentation deformation observation piers, and the sedimentation deformation observation piers and the horizontal displacement observation piers form observation piers; a level mark is buried at a right angle of the top surface of the settlement deformation observation pier, and a forced centering base is buried in the center of the top of the horizontal displacement observation pier.
The reinforcing steel bar bundles are buried in the center of the jet grouting pile.
The substrate is bedrock or a weakly weathered layer.
And the rotary spraying pile is fixedly connected with the settlement deformation observation pier through the dowel bars.
One end of the jet grouting pile is inserted into the substrate to a depth of not less than 1m, and the other end of the jet grouting pile is located 0.2m below the ground.
The settlement deformation observation pier and the horizontal displacement observation pier are poured into a whole through C20 concrete.
Distributed steel bars are embedded in the settlement deformation observation pier, and erection steel bars and stirrups are embedded in the horizontal displacement observation pier; 4 erection steel bars are arranged in the observation pier in a square shape; the erection steel bars are connected and fixed through a plurality of stirrups; the distributed steel bars are uniformly distributed on the top surface of the settlement deformation observation pier.
The central axes of the settlement deformation observation pier and the horizontal displacement observation pier are positioned on the sight line of the deformation observation point of the building.
The settlement deformation observation pier is a regular quadrangular prism, the horizontal displacement observation pier is a regular quadrangular frustum pyramid, and the top surface of the settlement deformation observation pier is 0.2m higher than the ground.
The beneficial effects of the utility model reside in that: the jet grouting pile and the reinforcing steel bar bundle are driven into relatively solid and stable strata such as bedrock or a weakly weathered stratum, so that the influence of deep covering layer sedimentation on a working base point is reduced, the stability and the reliability of the working base point are improved, the jet grouting pile can be used as the working base point for observation in the construction period and the operation period, and simultaneously, the jet grouting pile and the reinforcing steel bar bundle have the functions of observing the working base point in the sedimentation deformation and observing the working base point in the horizontal displacement.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a top view of the present invention;
in the figure: the method comprises the following steps of 1-jet grouting pile, 2-tendon, 3-settlement deformation observation pier, 4-horizontal displacement observation pier, 5-dowel, 6-leveling mark, 7-forced centering base, 8-covering layer, 9-base, 10-ground, 11-erection steel bar, 12-stirrup and 13-distribution steel bar.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
Examples
As shown in fig. 1 and 2, a work base observation pier for deep overburden comprises a overburden 8; the rotary jet grouting pile 1 is poured in the covering layer 8; reinforcing steel bars 2 are embedded in the jet grouting piles 1, one ends of the jet grouting piles 1 are inserted into the substrate 9, sedimentation deformation observation piers 3 are poured at the other ends of the jet grouting piles 1, horizontal displacement observation piers 4 are poured on the sedimentation deformation observation piers 3, and the sedimentation deformation observation piers 3 and the horizontal displacement observation piers 4 form observation piers; a level mark 6 is embedded at the right angle of the top surface of the settlement deformation observation pier 3, and a forced centering base 7 is embedded in the center of the top of the horizontal displacement observation pier 4.
Furthermore, the jet grouting pile 1 is constructed by adopting a single-pipe method, the diameter is 0.6m, and the length is determined according to the thickness of a covering layer.
Preferably, the tendon 2 is composed of 3 tendons
And binding the steel bars.
The reinforcing steel bar bundle 2 is buried in the center of the jet grouting pile 1.
The substrate 9 is bedrock or a weakly weathered layer.
And the jet grouting pile 1 is fixedly connected with the settlement deformation observation pier 3 through a dowel 5.
Preferably, the inserted bars 5 are formed by binding 4 phi 16 steel bars, the length of the inserted bars is 0.4m, and the embedded bar depth is 0.2m, so that the effect of connecting the jet grouting pile 1 and the observation pier is achieved.
One end of the jet grouting pile 1 is inserted into the substrate 9 to a depth of not less than 1m, and the other end is located 0.2m below the ground 10.
The settlement deformation observation pier 3 and the horizontal displacement observation pier 4 are cast into a whole through C20 concrete.
Distributed steel bars 13 are embedded in the settlement deformation observation pier 3, and erection steel bars 11 and stirrups 12 are embedded in the horizontal displacement observation pier 4; the erection steel bar 11 has 4 bars
The reinforcing steel bars are arranged in the observation pier in a square shape; the erection steel bars 11 are connected and fixed through a plurality of stirrups 12; the distributed reinforcing steel bars 13 are provided with a plurality of bars which are uniformly distributed on the settlement and deformation viewThe top surface of the pier 3 is measured.
Preferably, the stirrups 12 are distributed at intervals along the erection steel bars 11, and are made of phi 10 steel bars, and the arrangement distance is 0.15 m.
Preferably, the distributed steel bars 13 are arranged on the top surface of the settlement deformation observation pier 3, and are phi 12 steel bars, and the arrangement distance is 0.2 m.
Further, the settlement deformation observation pier 3 and the horizontal displacement observation pier 4 are upper and lower two components of a reinforced concrete structure formed by pouring C20 concrete and a set of erection steel bars 11, stirrups 12 and distribution steel bars 13.
The central axes of the settlement deformation observation pier 3 and the horizontal displacement observation pier 4 are positioned on the sight line of the deformation observation point of the building.
The settlement deformation observation pier 3 is a regular quadrangular prism, the horizontal displacement observation pier 4 is a regular quadrangular frustum pyramid, and the top surface of the settlement deformation observation pier 3 is 0.2m higher than the ground.
Preferably, the side length of the settlement deformation observation pier 3 is 1m and the height is 0.4m, the side length of the bottom surface of the horizontal displacement observation pier 4 is 0.5m, and the side length of the top surface is 0.3m and the height is 1.2 m.
Claims (9)
1. A foundation observation pier for deep overburden, comprising an overburden (8), characterized in that: a rotary jet grouting pile (1) is poured in the covering layer (8); reinforcing steel bundles (2) are embedded in the jet grouting piles (1), one ends of the jet grouting piles (1) are inserted into the substrate (9), and settlement deformation observation piers (3) are poured at the other ends of the jet grouting piles; the horizontal displacement observation pier (4) is poured on the settlement deformation observation pier (3), and the settlement deformation observation pier (3) and the horizontal displacement observation pier (4) form an observation pier; a level mark (6) is embedded at the right angle of the top surface of the settlement deformation observation pier (3), and a forced centering base (7) is embedded at the center of the top of the horizontal displacement observation pier (4).
2. The observation pier of claim 1, wherein: the reinforcing steel bar bundles (2) are buried in the center of the jet grouting pile (1).
3. The observation pier of claim 1, wherein: the substrate (9) is bedrock or a weak weathering layer.
4. The observation pier of claim 1, wherein: the jet grouting pile (1) is fixedly connected with the settlement deformation observation pier (3) through a dowel (5).
5. The observation pier of claim 1, wherein: one end of the jet grouting pile (1) is inserted into the base (9) to a depth of not less than 1m, and the other end of the jet grouting pile is located 0.2m below the ground (10).
6. The observation pier of claim 1, wherein: the settlement deformation observation pier (3) and the horizontal displacement observation pier (4) are poured into a whole through C20 concrete.
7. The observation pier of claim 1, wherein: distributed reinforcing steel bars (13) are embedded in the settlement deformation observation pier (3), and erection reinforcing steel bars (11) are embedded in the horizontal displacement observation pier (4); 4 erection steel bars (11) are arranged in the observation pier in a square shape; the erection steel bars (11) are connected and fixed through a plurality of stirrups (12); the distributed reinforcing steel bars (13) are uniformly distributed on the top surface of the settlement deformation observation pier (3).
8. The observation pier of claim 1, wherein: the central axes of the settlement deformation observation pier (3) and the horizontal displacement observation pier (4) are positioned on the sight line of the deformation observation point of the building.
9. The observation pier of claim 1, wherein: the settlement deformation observation pier (3) is a regular quadrangular prism, the horizontal displacement observation pier (4) is a regular quadrangular frustum pyramid, and the top surface of the settlement deformation observation pier (3) is 0.2m higher than the ground (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922082093.8U CN211060926U (en) | 2019-11-27 | 2019-11-27 | A work base observation mound for deep overburden |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922082093.8U CN211060926U (en) | 2019-11-27 | 2019-11-27 | A work base observation mound for deep overburden |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211060926U true CN211060926U (en) | 2020-07-21 |
Family
ID=71595759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922082093.8U Active CN211060926U (en) | 2019-11-27 | 2019-11-27 | A work base observation mound for deep overburden |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211060926U (en) |
-
2019
- 2019-11-27 CN CN201922082093.8U patent/CN211060926U/en active Active
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