Concrete precast block composite structure with anchor pile

Abstract

The utility model provides a concrete precast block combined structure with an anchor pile, which is good in anti-impact stability, attractive in appearance, high in safety and capable of dissipating waves, and comprises a concrete precast block and the anchor pile, the concrete precast block is a regular prism, and the cross section of the concrete precast block is a regular polygon. Second-stage concrete preformed holes are formed in the periphery of the concrete precast block, and a groove or a protruding block is arranged in the center of the upstream face of the concrete precast block. The anchor pile is vertically arranged below the second-stage concrete preformed hole of the concrete precast block; the anchor piles and the concrete precast blocks jointly form a pile-anchor type combined structure.

Description

Technical Field

[0001] The utility model relates to a slope protection structure of a dam slope, in particular to a combined structure of concrete precast blocks with anchor piles. Background Art

[0002] The slope protection is a slope protection layer built to prevent the slopes of earth-rock dams, levees, channels, etc. from being scoured and eroded by wind waves, water currents, tides, rainwater, etc. The slope protection on the water-facing side mainly prevents scouring by water currents, wave scouring, impact damage by ice and floating objects, etc.; the slope protection on the backwater side mainly prevents scouring by rainwater. There are various forms of slope protection structures. Generally, the slope protection on the water-facing side usually adopts forms such as turf, dry rubble masonry, grouted rubble masonry, concrete grouted stone, cement soil, molded bag concrete, cast-in-place concrete, cast-in-place reinforced concrete, precast concrete blocks and concrete fence panels, precast concrete special-shaped blocks, etc.

[0003] The precast concrete block is a commonly used structure type for the slope protection on the water-facing side. To ensure its stability under the action of water flow scouring and wave scouring, usually a single block needs to have a large weight and thickness, especially on the water-facing side of the dam section where the water flow scouring or wave action is strong, resulting in a large amount of concrete consumption and high cost. The large weight of a single block makes construction inconvenient. At the same time, each block works independently by its own weight, and the stability is poor. Content of the Utility Model

[0004] In order to solve the problems existing in the existing concrete precast block slope protection, the utility model provides a combined structure of concrete precast blocks with anchor piles, which has good anti-scour stability, beautiful appearance, high safety and wave dissipation ability, and can be widely applied to engineering fields such as water conservancy, hydropower, port and shipping.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The combined structure of concrete precast blocks with anchor piles includes concrete precast blocks and anchor piles. The concrete precast block is a regular prism, and its cross-sectional shape is a regular polygon. Second-stage concrete reserved holes are arranged around the concrete precast block, and a groove or a convex block is arranged in the center of its water-facing surface; the anchor piles are vertically arranged below the second-stage concrete reserved holes of the concrete precast block; the anchor piles and the concrete precast blocks jointly form a pile-anchor combined structure.

[0007] Preferably, the second-stage concrete reserved holes are in a conical shape with a larger upper part and a smaller lower part; the second-stage concrete reserved holes serve as anchor pile construction holes, and after the anchor pile construction is completed, they are filled and sealed with second-stage concrete with a concrete strength grade one level higher than that of the concrete precast block.

[0008] Preferably, the basic shape of the groove or the convex block is a regular polygon, and its specific shape is adjusted according to the arrangement of the reserved holes and personal preferences.

[0009] Preferably, the anchor piles are root piles with a pile diameter of 100-200 mm and a pile length not exceeding 2 m. Steel bars or steel cages may be provided in the piles as required.

[0010] Preferably, the anchor piles are small cast-in-place piles or jet grouting piles.

[0011] The construction steps of the present utility model are as follows:

[0012] S1. Calculate and determine the specifications of the required precast concrete blocks, i.e., the planar dimensions and thickness, as well as the quantity, size, and length of the anchor piles according to the requirement that the slope protection remains stable under the action of waves or water flow.

[0013] S2. Propose a design scheme for the precast concrete blocks according to the calculation results and fabricate the required precast concrete blocks according to the design scheme.

[0014] S3. Lay the precast concrete blocks according to the slope protection design requirements, and then construct the root piles one by one. After each root pile is constructed, immediately pour and seal the reserved holes with secondary concrete with a concrete strength grade one level higher than that of the precast concrete blocks to ensure that the precast concrete blocks, secondary concrete, and root piles become an integral whole.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. By providing anchor piles and relying on the uplift resistance of the anchor piles, the scouring resistance of the precast concrete blocks is greatly improved, so that the thickness of the precast concrete blocks can be reduced, the investment can be saved accordingly, the weight of the precast blocks can be reduced, and the construction is facilitated.

[0017] 2. By providing grooves or protrusions in the center of the water-facing surface of the precast concrete blocks, the roughness of the surface can be increased, and the wave dissipation capacity can be improved; the surface roughness and anti-slip performance can be increased, and the possibility of people or animals walking and self-rescue after falling into the water can be improved, thereby improving the production safety of the project; the texture of the slope protection surface can be increased, and the aesthetics can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic plan view of an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 the A-A sectional view of

[0020] Figure 3 is Figure 1 the B-B sectional view of

[0021] In the figure: 1-precast concrete block; 2-groove; 3-reserved hole; 4-anchor pile; 5-secondary concrete. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described in detail below in conjunction with the accompanying drawings:

[0023] As shown in Figures 1 to 3 , the combined structure of the concrete precast block with anchor piles of the present utility model includes a concrete precast block 1 and an anchor pile 4. The concrete precast block 1 is a regular prism, and its cross-sectional shape is a regular polygon. Secondary concrete reserved holes 3 are arranged around the concrete precast block 1, and a groove 2 is arranged in the center of the water-facing surface of the concrete precast block 1; the anchor pile 4 is vertically arranged below the secondary concrete reserved hole 3 of the concrete precast block; the anchor pile 4 and the concrete precast block 1 jointly form a pile-anchor type combined structure.

[0024] Preferably, the secondary concrete reserved hole 3 is in the shape of a cone with a larger upper part and a smaller lower part; the reserved hole 3 serves as the construction hole for the anchor pile 4, and after the construction of the anchor pile 4 is completed, it is filled and sealed with secondary concrete 5 which is one grade higher than the concrete strength grade of the precast block.

[0025] Preferably, the basic shape of the groove 2 is a regular polygon, and its specific shape is adjusted according to the arrangement of the reserved holes and personal preference.

[0026] Preferably, the anchor pile 4 is a root pile, the pile diameter is preferably 100 - 200 mm, the pile length should not exceed 2 m, and steel bars or steel cages can be provided in the pile body as required.

[0027] Preferably, the anchor pile 4 can adopt small bored piles or jet grouting piles.

[0028] The construction steps of the present utility model are as follows:

[0029] S1, Calculate and determine the specifications of the required concrete precast block 1, namely the plane size and thickness, as well as the quantity, size and length of the anchor pile 4 according to the requirement that the slope protection remains stable under the action of waves or water flow;

[0030] S2, Propose a design plan for the concrete precast block 1 according to the calculation results, and manufacture the required concrete precast block 1 according to the design plan;

[0031] S3, Lay the concrete precast block 1 according to the slope protection design requirements, and then construct the anchor pile 4 block by block. The anchor pile 4 adopts root piles, and after the construction of each root pile, the reserved hole 3 is immediately filled and sealed with secondary concrete 5 which is one grade higher than the concrete strength grade of the concrete precast block 1 to ensure that the concrete precast block 1, the secondary concrete 5 and the root pile 4 become an integral body.

[0032] The above embodiments are only illustrative of the principles and functions of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. The prefabricated concrete block composite structure with anchor piles is characterized by: It includes a precast concrete block and an anchor pile. The precast concrete block is a regular prism with a regular polygonal cross-section. Second-phase concrete reserved holes are arranged around the precast concrete block, and a groove or a convex block is arranged in the center of the water-facing surface. The anchor pile is vertically arranged below the second-phase concrete reserved hole of the precast concrete block. The anchor pile and the precast concrete block together form a pile-anchor combination structure.

2. The prefabricated concrete block assembly structure with anchor piles according to claim 1 is characterized in that: The second-phase concrete reserved hole is in the shape of a cone with a larger top and a smaller bottom. The second-phase concrete reserved hole is used as an anchor pile construction hole and is sealed by pouring second-phase concrete.

3. The prefabricated concrete block assembly structure with anchor piles according to claim 1 is characterized in that: The front view shape of the groove or the protrusion is a regular polygon.

4. The prefabricated concrete block assembly structure with anchor piles according to claim 1 is characterized in that: The anchor piles are tree root piles with a pile diameter of 100-200 mm and a pile length of no more than 2 m. Steel bars or steel cages are arranged in the pile body.

5. The prefabricated concrete block assembly structure with anchor piles according to claim 4 is characterized in that: The tree root piles are small cast-in-place piles or rotary jet piles.

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