CN206971247U - A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock - Google Patents
A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock Download PDFInfo
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- CN206971247U CN206971247U CN201720714337.8U CN201720714337U CN206971247U CN 206971247 U CN206971247 U CN 206971247U CN 201720714337 U CN201720714337 U CN 201720714337U CN 206971247 U CN206971247 U CN 206971247U
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- toe board
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- plinth foundation
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Abstract
The utility model discloses a kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock, the concrete toe board（1）Structure reinforcing bars are inside poured（2）, concrete toe board（1）It is seated in the outer slope of toe board（8）With toe board inner slope（4）Between platform on；Toe board inner slope（4）Positioned at supposition Unloading Rock scope（6）It is interior, toe board inner slope（4）Surface is sprayed with concrete layer（5）；Concrete toe board（1）One group of vertical plinth foundation anchor pole is equipped with the platform of bottom surface（3）, plinth foundation anchor pole（3）Top and concrete toe board（1）Interior structure reinforcing bars（2）Welding；Concrete toe board（1）One group of anchor for being used for slip casting is additionally provided with the platform of bottom surface and notes pipe（7）.The utility model can utilize Unloading Rock to build toe board, reduce the height of the outer side slope of toe board, reduce slag field scale, and can ensure the security of dam, save the duration of a project, and effectively reduce construction investment, have obvious economic benefit.
Description
Technical field
A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock is the utility model is related to, belongs to water conservancy and hydropower
Face Rockfill Dam based process technical field of construction in engineering.
Background technology
The toe board of panel concrete rock-fill dams be typically disposed in hard, not erosion and can fill weak weathering, weak off-load it is fresh
On basement rock, and for being unsatisfactory for the rock foundation of above-mentioned condition, typically all use deep-cut to the foundation plane for meeting code requirement for
Extremely, anchor pole is then laid on plinth foundation face, then starts pouring for toe board concrete, treats that toe board concrete reaches grouting and required
Intensity after carry out consolidation grouting.However, in the construction of some western engineerings of China, because Unloading Rock is generally relatively developed,
And the Unloading Rock Growth Depth of part engineering easily tens meters even rice up to a hundred, if using all excavate remove if it is obvious
It is uneconomical.Bank slope section toe board is also placed on Unloading Rock by part engineering, and deep hole consolidation grouting is used to it after toe board pours,
But toe board is caused in various degree because grouting pressure is excessive and lifts phenomenon, larger hidden danger has been buried for engineering safety.Pole
A small number of engineerings, can only be to lifting the toe board concrete weight at position due to secure authentication that can not be by associated mechanisms and examination
Newly pour, and re-start security evaluation.
Utility model content
The purpose of this utility model is, there is provided a kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock,
To solve the deformation of Unloading Rock and infiltration problem in advance, globality, stability and the impermeability on basis are improved.Ensure toe board knot
Structure is not influenceed by grouting pressure, and avoid generation toe board structure lifts phenomenon so that adaptation of the face dam in similar geological conditions
Property and security be protected, so as to overcome the deficiencies in the prior art.
What the technical solution of the utility model was realized in：
A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock of the present utility model is the concrete toe
Structure reinforcing bars are poured in plate, concrete toe board is seated on the outer platform between slope and toe board inner slope of toe board；Toe board inner slope position
In speculating in the range of Unloading Rock, toe board inner slope surface is sprayed with concrete layer；One group is equipped with the platform of concrete toe board bottom surface
Vertical plinth foundation anchor pole, plinth foundation anchor pole top are welded with the structure reinforcing bars in concrete toe board；Concrete toe board bottom
One group of anchor for being used for slip casting is additionally provided with the platform in face and notes pipe.
In foregoing ruggedized construction, a diameter of 25~32mm of the plinth foundation anchor pole, plinth foundation anchor pole top is provided with L
Shape quarter bend, plinth foundation anchor pole top expose the length of platform with ensure plinth foundation anchor pole can with the top of concrete toe board
Reinforcement welding.
By adopting the above-described technical solution, the utility model is compared with prior art, based process in the utility model
In grouting method can change the loose structure of country rock, improve cohesive force and internal friction angle, close crack, prevent water to rock mass
Corrode, improve globality, stability and the impermeability on basis.Rock mass strength is significantly improved, can be provided after reinforcing for anchor pole
Reliably put forth effort basis, anchor pole is played the anchorage effect for the country rock that ravels.This method effectively prevent because excessive simultaneously
Consolidation grouting pressure the problem of causing toe board to lift.Due to Unloading Rock can be utilized to build toe board, the outer side slope of toe board is reduced
Height, reduce slag field scale.This method can ensure the security of dam, save the duration of a project, and effectively reduce work
Journey is invested, and has obvious economic benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1- concrete toe board, 2- toe board structures reinforcing bar, 3- plinth foundations anchor pole, 4- toe board inner slopes are domatic, 5- toe boards
Inner slope pneumatically placed concrete, 6- speculate Unloading Rock scope, 7- anchors note pipe, the outer slope of 8- toe boards.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, but not as new to this practicality
Any restrictions of type.
A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock of the present utility model, as shown in Figure 1：It is described
Structure reinforcing bars 2 are poured in concrete toe board 1, concrete toe board 1 is seated in the outer platform between slope 8 and toe board inner slope 4 of toe board
On；For toe board inner slope 4 positioned at speculating in Unloading Rock scope 6, the surface of toe board inner slope 4 is sprayed with concrete layer 5；The bottom of concrete toe board 1
One group of vertical plinth foundation anchor pole 3, the top of plinth foundation anchor pole 3 and the structure in concrete toe board 1 are equipped with the platform in face
Reinforcing bar 2 welds；One group of anchor for being used for slip casting is additionally provided with the platform of the bottom surface of concrete toe board 1 and notes pipe 7.Plinth foundation anchor pole 3
A diameter of 25~32mm, the top of plinth foundation anchor pole 3 are provided with L-shaped quarter bend, and the length of platform is exposed on the top of plinth foundation anchor pole 3
To ensure that plinth foundation anchor pole 3 can be with the reinforcement welding at the top of concrete toe board 1.
A kind of concrete plinth foundation reinforcement means for above-mentioned ruggedized construction of the present utility model is that this method is directed to
Unloading Rock cranny development, loosening have the characteristics of certain connectivity, in plinth foundation in addition to the conventional anchor pole of arrangement, separately
A number of anchor note pipe is arranged, carry out slip casing by pressure in advance by anchor note pipe carries out consolidation grouting to Unloading Rock, makes slurries
Fill, permeate in basic Unloading Rock, form joint, crack, tomography is cementing and the armored concrete of the overall stress of anchor pole is answered
Close structure；To improve the intensity of weak structural plane and the stability of relaxed rockmass in rock stratum, and then improve cohesive force and Nei Mo
Angle is wiped, closes crack, prevents erosion of the water to rock mass, ensures the stability of plinth foundation；The reinforcing bar formed be in the milk simultaneously after mixes
Coagulate native composite construction and can be provided for anchor pole and reliably put forth effort basis, anchor pole is played the anchorage effect for the country rock that ravels, with
The drawbacks of overcoming prior art individually to exist using anchor pole.
Specific construction step is as follows：
Step 1, plinth foundation are excavated and top layer cleaning, and high pressure water cleaning should be first used to obvious crack, then complete again
Slope, toe board are located the construction of platform and toe board inner slope outside into toe board, and spray a layer concrete layer on toe board inner slope surface；
Step 2, according to Test in Situ fractured situation and off-load developmental state, be located platform in the toe board of plinth foundation
The hole position of upper arrangement plinth foundation anchor pole, it is ensured that slurries can flow into Unloading Rock along fissure-plane；
Step 3, drilled according to the hole position of plinth foundation anchor pole, arrange plinth foundation anchor pole, plinth foundation anchor pole is adopted
With a diameter of 25~32mm anchor pole, it is ensured that termination point of anchor rod spill toe board be located the length of platform can be with being pushed up in concrete toe board
The reinforcement welding in portion；
Step 4, drilling decentralization anchor note pipe, and get out mixer, the grouting pump and only sizing device is standby that grouting needs；
Step 5, beginning slip casting, sealing of hole are required according to Regulations prevailing for the time being in force, work progress should be applied by existing grouting
Work Authority Contro1；
Step 6, the colligation for carrying out toe board reinforcing bar, and by the L-shaped quarter bend at the top of plinth foundation anchor pole and toe board upper strata steel
Muscle welds；
Step 7, start pouring for toe board concrete；
Step 8, above-mentioned construction process is repeated until terminating.
Embodiment
As shown in figure 1, the concrete layer 5 of this example is to prevent that exoserosis is, it is necessary to before grouting in the anchor note grouting of pipe 7
Complete, the thickness of concrete layer 5 is 5~15cm；Anchor note pipe 7 is the main thoroughfare being in the milk, and caliber is 40~60mm, and slip casting fills
Between array pitch and depth specifically determined according to the development degree of Unloading Rock, finally with field test and check that aggregation of data is true
Fixed, the construction technology such as grouting Mortar mix proportion, grouting pressure, sealing of hole measure is tried on the basis of current specifications is met according to scene
Test comprehensive determination.
Claims (2)
1. a kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock, including concrete toe board（1）, its feature exists
In：In concrete toe board（1）Structure reinforcing bars are inside poured（2）, concrete toe board（1）It is seated in the outer slope of toe board（8）In toe board
Slope（4）Between platform on；Toe board inner slope（4）Positioned at supposition Unloading Rock scope（6）It is interior, toe board inner slope（4）Surface is sprayed with mixed
Solidifying soil layer（5）；Concrete toe board（1）One group of vertical plinth foundation anchor pole is equipped with the platform of bottom surface（3）, plinth foundation anchor pole
（3）Top and concrete toe board（1）Interior structure reinforcing bars（2）Welding；Concrete toe board（1）One group is additionally provided with the platform of bottom surface
Anchor for slip casting notes pipe（7）.
2. ruggedized construction according to claim 1, it is characterised in that：The plinth foundation anchor pole（3）A diameter of 25~
32mm, plinth foundation anchor pole（3）Top is provided with L-shaped quarter bend, plinth foundation anchor pole（3）Expose the length of platform to ensure in top
Plinth foundation anchor pole（3）Can be with concrete toe board（1）The reinforcement welding at top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720714337.8U CN206971247U (en) | 2017-06-19 | 2017-06-19 | A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720714337.8U CN206971247U (en) | 2017-06-19 | 2017-06-19 | A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206971247U true CN206971247U (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720714337.8U Active CN206971247U (en) | 2017-06-19 | 2017-06-19 | A kind of concrete plinth foundation ruggedized construction being placed on Unloading Rock |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119705A (en) * | 2017-06-19 | 2017-09-01 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of concrete plinth foundation ruggedized construction and method being placed on Unloading Rock |
| CN113832921A (en) * | 2020-06-24 | 2021-12-24 | 中国电建集团华东勘测设计研究院有限公司 | Construction method and structure of core-wall dam heightened face-plate rock-fill dam combined with toe-plate foundation treatment |
| CN114892687A (en) * | 2022-05-07 | 2022-08-12 | 中钢集团马鞍山矿山研究总院股份有限公司 | A advance reinforced structure that advances that is used for opencut rock quality bedding slope to administer |
-
2017
- 2017-06-19 CN CN201720714337.8U patent/CN206971247U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119705A (en) * | 2017-06-19 | 2017-09-01 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of concrete plinth foundation ruggedized construction and method being placed on Unloading Rock |
| CN113832921A (en) * | 2020-06-24 | 2021-12-24 | 中国电建集团华东勘测设计研究院有限公司 | Construction method and structure of core-wall dam heightened face-plate rock-fill dam combined with toe-plate foundation treatment |
| CN114892687A (en) * | 2022-05-07 | 2022-08-12 | 中钢集团马鞍山矿山研究总院股份有限公司 | A advance reinforced structure that advances that is used for opencut rock quality bedding slope to administer |
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