CN213038395U - Side slope retaining structure of high soil slope entrance to a cave - Google Patents
Side slope retaining structure of high soil slope entrance to a cave Download PDFInfo
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- CN213038395U CN213038395U CN202020926631.7U CN202020926631U CN213038395U CN 213038395 U CN213038395 U CN 213038395U CN 202020926631 U CN202020926631 U CN 202020926631U CN 213038395 U CN213038395 U CN 213038395U
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- side slope
- miniature steel
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- steel pipe
- hole
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Abstract
The utility model provides a side slope retaining structure of high soil slope entrance to a cave, set up many miniature steel-pipe piles (2) respectively in the design position top both sides of entrance to a cave (1), the top of miniature steel-pipe pile (2) is connected and is pressed back timber (3) and form overall structure, be equipped with prestressed anchorage cable (4) on the depth direction of hole face side slope, hole face side slope surface is equipped with concrete retaining wall (6), concrete retaining wall (6) and prestressed anchorage cable (4) and miniature steel-pipe pile (2) form supporting construction (7); the utility model discloses a fuse miniature steel-pipe pile, prestressed anchorage cable and barricade to exert the prestressing force effect to the prestressed anchorage cable, make whole side slope form from top to bottom, by the reinforcement system in table and, become passive cling compound and be initiative cling compound, improved the cling compound ability greatly.
Description
Technical Field
The utility model relates to a hydraulic and hydroelectric engineering technical field, concretely relates to side slope retaining structure of high soil property side slope entrance to a cave.
Background
In the excavation work process of hydraulic and hydroelectric engineering tunnel, the condition that a hole covering layer and a full-strength weathering layer are thick and uneven in distribution often exists. There are two types of supports commonly used for it: one is to slow down the excavation slope ratio and add sash beam support system, the advantage of this kind of support type lies in simple structure, construction convenience, but this type exists excavation scope, investment and occupation space great shortcoming, and when sudden heavy rain or increase the load above, the side slope dead weight increases, the side slope appears collapsing and sliding deformation or arc sliding deformation easily, thus leads to the entrance to a cave side slope unstability; the second is to reduce the excavation of the side slope, adopt the mode of setting up the systematic slide-resistant pile, utilize the combined action of slide-resistant pile and surrounding soil body, transmit the sliding force of the soil body to the stable stratum, utilize the anchoring effect of the stable stratum to produce the passive resistance and balance the sliding force of the soil body, increase the sliding resistance of the high soil texture side slope, but to the steep high soil texture side slope of topography, the mechanical equipment is comparatively difficult to enter the field, and because the diameter of the pile body of the slide-resistant pile is great, the accidents such as soil body slip, collapse that may cause during the construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a side slope retaining structure of high soil property side slope entrance to a cave, the utility model discloses a fuse miniature steel-pipe pile, prestressed anchorage cable and barricade to exert the prestressing force effect to the prestressed anchorage cable, make whole side slope form from top to bottom, by the reinforcement system in table and, change passive cling force for initiative cling force, improved the cling force ability greatly.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a side slope retaining structure of high soil property side slope entrance to a cave which characterized in that: a plurality of miniature steel pipe piles are arranged on two sides above the designed position of the opening respectively, the top of each miniature steel pipe pile is connected with a capping beam to form an integral structure, a prestressed anchor cable is arranged in the depth direction of the hole face side slope, a concrete retaining wall is arranged on the surface of the hole face side slope, and the concrete retaining wall, the prestressed anchor cable and the miniature steel pipe piles form a supporting structure.
Further: and pre-stressed anchor cables are distributed between two adjacent miniature steel pipe piles at equal intervals.
Further: the miniature steel pipe pile is arranged on the pavement platform above the hole.
Further: and the two sides above the hole are respectively provided with a capping beam.
Further: and a deep drainage hole is also formed in the concrete retaining wall and extends into the hole face side slope.
Further: the diameter of the miniature steel pipe pile is smaller than 400 cm.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses set up the prestressed anchorage cable and exert prestressing force on entrance to a cave soil property side slope domatic, constitute with the help of the pulling force of prestressed anchorage cable, the impedance force of miniature steel-pipe pile and concrete barricade and hold the system of drawing, block the slip of the landslide body jointly, the utility model discloses changed the anti-slide pile and only leaned on the resistance of anchor section ground to keep out the situation of landslide force for the pile body atress moment of miniature steel-pipe pile reduces greatly, becomes thin with the pile footpath, and the buried pile degree of depth becomes shallow, practices thrift the cost, and the time limit for a project shortens; and the utility model discloses an during the construction in advance to prestressing force anchor cable applys prestressing force, changes passive cling force and is initiative cling force, makes the gliding mass just receive the effect of thrust at the beginning, has played the effect of cling compound immediately, has improved the cling compound ability greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic structural view of the capping beam of the present invention.
The labels in the figures are: 1-an opening; 2-miniature steel pipe piles; 3-capping the beam; 4-prestressed anchorage cable; 5-deep drainage hole; 6-concrete retaining wall; 7-supporting structure.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
As shown in figures 1-3, the side slope retaining structure of a high soil slope entrance to a cave provided by the utility model, a plurality of micro steel pipe piles 2 are respectively arranged at two sides above the designed position of the entrance to a cave 1, the micro steel pipe piles 2 are arranged to increase the soil arch effect of soil between piles in advance so as to limit the deformation of soil during the excavation process, prevent local collapse during the excavation process and control the displacement of slope during the period from excavation to support, the top of the micro steel pipe pile 2 is connected with a capping beam 3 to form an integral structure, a prestressed anchor cable 4 is arranged in the longitudinal depth direction of the tunnel face side slope, a concrete retaining wall 6 is arranged on the surface of the tunnel face side slope, the concrete retaining wall 6 forms a supporting structure 7 with the prestressed anchor cable 4 and the micro steel pipe piles 2, the prestressed anchor cable 4 and the concrete retaining wall 6 are connected into a whole, and prestress is applied to the prestressed anchor cable 4, the rigidity of the slope surface is improved, the whole hole face side slope forms a reinforcing system from top to bottom and from the outside to the inside, slope displacement and ground settlement are effectively controlled, and therefore the purpose of integrally and effectively supporting the hole face side slope is achieved.
And prestressed anchor cables 4 are distributed between two adjacent miniature steel pipe piles 2 at equal intervals.
The miniature steel pipe pile 2 is arranged on the pavement platform above the hole 1.
And the two sides above the hole 1 are respectively provided with a capping beam 3.
The design position top both sides of entrance to a cave 1 are equipped with the miniature steel-pipe pile 2 of multirow, and every row all has many miniature steel-pipe pile 2, and the back timber 3 of connecting in the miniature steel-pipe pile 2 top of both sides is vertical and transversely arranges, and vertical back timber tension is used, and horizontal back timber atress is used, has reduced miniature steel-pipe pile 2's shear force and moment of flexure greatly, has improved overall structure's stability.
The concrete retaining wall 6 is further provided with a deep drain hole 5, and the deep drain hole 5 penetrates into the hole face side slope.
The diameter of the miniature steel pipe pile 2 is smaller than 400 cm.
The specific construction steps of a slope retaining structure of a high soil slope entrance to a cave are as follows:
s1: after the platform above the opening 1 is excavated, performing hole site lofting and drilling construction on the miniature steel pipe pile 2, wherein the deviation of a drilling angle is required to be not more than 1 degree;
s2: after the hole is cleaned, placing the miniature steel pipe pile 2 into the hole, and performing grouting construction on the miniature steel pipe pile 2, wherein multiple times of clearance grouting construction are required until the pipe orifice is turned over due to the fact that the requirement on the filling coefficient is difficult to obtain through one-time grouting;
s3: binding steel bars at the top of the miniature steel pipe pile 2 and then pouring a capping beam 3;
s4: excavating the hole-face side slope, constructing the pre-stressed anchor cables 4 and the deep drain holes 5 on the excavated hole-face side slope in time according to the construction sequence of drilling, grouting, tensioning and locking, and ensuring the effective exposed length of the deep drain holes 5;
s5: after the construction of the prestressed anchor cable 4 and the deep drain hole 5 is completed, the concrete retaining wall 6 is constructed on two sides of the opening, so that the miniature steel pipe pile 2, the prestressed anchor cable 4 and the concrete retaining wall 6 form a whole.
The above embodiments are merely preferred technical solutions of the present invention, and it should be understood by those skilled in the art that modifications or substitutions of technical solutions or parameters in the embodiments can be made without departing from the principles and essential conditions of the present invention, and all the modifications or substitutions should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a side slope retaining structure of high soil property side slope entrance to a cave which characterized in that: a plurality of miniature steel pipe piles (2) are arranged on two sides above the designed position of a hole (1) respectively, the top of each miniature steel pipe pile (2) is connected with a capping beam (3) to form an integral structure, a prestressed anchor cable (4) is arranged in the depth direction of a hole face side slope, a concrete retaining wall (6) is arranged on the surface of the hole face side slope, and the concrete retaining wall (6) forms a supporting structure (7) with the prestressed anchor cable (4) and the miniature steel pipe piles (2).
2. The side slope retaining structure of the high soil slope opening according to claim 1, characterized in that: and pre-stressed anchor cables (4) are distributed between two adjacent miniature steel pipe piles (2) at equal intervals.
3. The side slope retaining structure of the high soil slope opening according to claim 1, characterized in that: the miniature steel pipe pile (2) is arranged on the pavement platform above the hole (1).
4. The side slope retaining structure of the high soil slope opening according to claim 1, characterized in that: and the two sides above the hole (1) are respectively provided with a capping beam (3).
5. The side slope retaining structure of the high soil slope opening according to claim 1, characterized in that: the concrete retaining wall (6) is further provided with a deep drain hole (5), and the deep drain hole (5) penetrates into the hole face side slope.
6. The side slope retaining structure of the high soil slope opening according to claim 1, characterized in that: the diameter of the miniature steel pipe pile (2) is smaller than 400 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926631.7U CN213038395U (en) | 2020-05-27 | 2020-05-27 | Side slope retaining structure of high soil slope entrance to a cave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926631.7U CN213038395U (en) | 2020-05-27 | 2020-05-27 | Side slope retaining structure of high soil slope entrance to a cave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213038395U true CN213038395U (en) | 2021-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020926631.7U Active CN213038395U (en) | 2020-05-27 | 2020-05-27 | Side slope retaining structure of high soil slope entrance to a cave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213038395U (en) |
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2020
- 2020-05-27 CN CN202020926631.7U patent/CN213038395U/en active Active
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