Prefabricated concrete pile inner cavity anti-frost heaving structure
By setting up a barrier mechanism and concrete pouring space in precast concrete piles, the problem of side wall cracks caused by freezing is solved, which improves the stability of the pile and reduces resource waste.
Patent Information
- Application Number
- CN202421078043.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In the low temperature environment in the Northeast region, the genes of precast concrete piles are affected by the frozen soil layer and groundwater. The frozen water in the pile core causes an increase in pressure, which may cause damage to the side wall cracks of the pile.
By setting up a barrier mechanism in the concrete pile, the inner cavity is divided into two upper and lower layers to form a concrete pouring space. After removing the internal water, the concrete is poured to form a whole to avoid the pressure on the side walls of the pile due to freezing of water.
It improves the stability of concrete piles, prevents crack damage caused by frost and swelling, reduces waste of concrete resources, and optimizes the construction process.
Smart Images
Figure CN222275457U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric power communication poles, and specifically refers to an anti-freezing and heaving structure of an inner cavity of a precast concrete pile. Background Art
[0002] In the power and communication tower industries, precast concrete piles have the advantages of short construction period, small footprint, and lower transportation cost than precast concrete pile raft foundations. They have a high degree of market recognition and are gradually spreading to wider areas, even becoming popular in the Northeast.
[0003] However, due to the low temperature and deep permafrost layer in the Northeast, in some areas with high water levels or abundant groundwater, water will be stored in the pile core after the pile foundation is constructed, and the water level will not drop over time. Even if the water in the pile core is pumped out immediately after the pile foundation is constructed, after a period of time, because the water level in the soil is higher than the water level in the pile core, the water in the soil will slowly penetrate into the pile core over time. In winter, the low temperature for several consecutive months will freeze the upper layer of water in the pile core into ice. In the process of water changing from liquid to solid, the volume will continue to increase, exerting great pressure on the side wall of the pile, which is enough to cause cracks and damage to the pile foundation. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a precast concrete pile inner cavity anti-freezing and expansion structure capable of making the hardened concrete and the upper concrete pile form a whole, thereby preventing the water penetrating into the inner cavity of the concrete pile from exerting a great pressure on the side wall of the upper concrete pile after freezing, thereby causing cracks and damage to the concrete pile.
[0005] The utility model is realized through the following technical scheme, and provides a precast concrete pile inner cavity anti-freezing heave structure, comprising a concrete pile arranged below the ground, wherein a baffle mechanism is arranged in the inner cavity of the concrete pile, and the baffle mechanism divides the inner cavity of the concrete pile into an upper and lower layer, and the vertical distance from the baffle mechanism to the upper end surface of the concrete pile forms a concrete pouring space.
[0006] During use, the utility model is provided with a baffle mechanism in the inner cavity of the concrete pile, and the baffle mechanism divides the inner cavity of the concrete pile into two layers, an upper layer and an lower layer. The vertical distance from the baffle mechanism to the upper end surface of the concrete pile forms a concrete pouring space. When the device is in use, water in the inner cavity of the concrete pile needs to be pumped out, and then the baffle mechanism is placed in the inner cavity of the concrete pile, and then the concrete pile is poured into the concrete pouring space, so that the hardened concrete and the upper concrete pile form a whole, and the stability of the concrete pile during use is improved, so as to avoid that the water that penetrates into the inner cavity of the concrete pile generates a large pressure on the side wall of the upper concrete pile after freezing, causing cracks and damage to the concrete pile.
[0007] Preferably, the blocking mechanism comprises a retaining bar fixed on the concrete pile and extending into the inner cavity of the concrete pile, and a concrete retaining plate matched with the inner cavity of the concrete pile is placed on the retaining bar. The blocking mechanism comprises a retaining bar fixed on the concrete pile and extending into the inner cavity of the concrete pile, and a concrete retaining plate is placed on the retaining bar. The concrete retaining plate and the retaining bar can divide the inner cavity space of the concrete pile into two layers, so as to prevent the concrete from moving to the position below the concrete retaining plate when the workers pour concrete into the concrete pouring space.
[0008] Preferably, the vertical distance from the upper end surface of the concrete baffle to the upper end surface of the concrete pile is 2.5-2.6 m. The vertical distance from the upper end surface of the concrete baffle to the upper end surface of the concrete pile is set at 2.5-2.6 m, because the water temperature below 2.5 m is higher and does not meet the freezing conditions, so it can avoid freezing of water in the inner cavity of the concrete pile below the concrete baffle and reduce the waste of concrete resources.
[0009] Preferably, a plurality of retaining bars are provided on the concrete pile, and the retaining bars are evenly distributed along the circumference of the concrete pile. By providing a plurality of retaining bars on the concrete pile and distributing the retaining bars evenly along the circumference of the concrete pile, the stability of the concrete retaining plate when the device is in use can be improved.
[0010] Preferably, the transverse distance from the end of the retaining bar located in the inner cavity of the concrete pile to the side wall of the inner cavity of the concrete pile is set at 50-60 mm. By setting the transverse distance from the end of the retaining bar located in the inner cavity of the concrete pile to the side wall of the inner cavity of the concrete pile to 50-60 mm, the stability of the concrete retaining plate when the device is in use can be improved.
[0011] The beneficial effects of the utility model are as follows: by setting up concrete piles below the ground, and arranging a baffle mechanism in the inner cavity of the concrete pile, and the baffle mechanism divides the inner cavity of the concrete pile into an upper and lower layer, and the vertical distance from the baffle mechanism to the upper end surface of the concrete pile forms a concrete pouring space. When the device is in use, it is necessary to pump out the water in the inner cavity of the concrete pile, and then place the baffle mechanism in the inner cavity of the concrete pile, and then pour the concrete pile into the concrete pouring space, so that the hardened concrete and the upper concrete pile form a whole, and the stability of the concrete pile during use is improved, so as to avoid the water that penetrates into the inner cavity of the concrete pile and generates a large pressure on the side wall of the upper concrete pile after freezing, causing cracks and damage to the concrete pile. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] Figure 2 for Figure 1 Schematic diagram of the structure of part A
[0014] Figure 3 for Figure 1 1-1 structural cross-sectional view;
[0015] As shown in the figure:
[0016] 1. Concrete piles, 2. Rebars, 3. Concrete baffles, 4. Lifting ears. DETAILED DESCRIPTION
[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.
[0018] like Figure 1-Figure 3 The precast concrete pile inner cavity anti-frost heave structure of the utility model shown comprises a concrete pile 1 arranged below the ground, wherein a partition mechanism is arranged in the inner cavity of the concrete pile 1, wherein the partition mechanism divides the inner cavity of the concrete pile 1 into an upper and lower layer, and a vertical distance from the partition mechanism to the upper end surface of the concrete pile 1 forms a concrete pouring space.
[0019] The barrier mechanism includes a retaining bar 2 fixed on the concrete pile 1 and extending into the inner cavity of the concrete pile 1, and a concrete retaining plate 3 is placed on the retaining bar 2. The concrete retaining plate 3 and the retaining bar 2 can be used to divide the inner cavity space of the concrete pile 1 into two layers, so as to prevent the concrete from moving to the position below the concrete retaining plate 3 when the staff pours concrete into the concrete pouring space. The vertical distance from the upper end surface of the concrete retaining plate 3 to the upper end surface of the concrete pile 1 is set at 2.5~2.6m. Because the water temperature below 2.5m will be higher and cannot reach the freezing condition, it can prevent the water below the concrete retaining plate 3 in the inner cavity of the concrete pile 1 from freezing while reducing the waste of concrete resources. By arranging a plurality of retaining bars 2 on the concrete pile 1 and distributing the plurality of retaining bars 2 equidistantly along the circumference of the concrete pile 1, the stability of the concrete retaining plate 3 when the device is in use can be improved. By setting the lateral distance from the end of the retaining bar 2 located in the inner cavity of the concrete pile 1 to the inner cavity side wall of the concrete pile 1 at 50~60mm, the stability of the concrete retaining plate 3 when the device is in use can be improved. By arranging the lifting lug 4 on the upper end surface of the concrete baffle 3 , the lifting lug 4 can be used to facilitate the workers to lift it into the inner cavity of the concrete pile 1 and place it on the baffle 2 .
[0020] Combined with Figure 1-3 It can be seen that the method of using the utility model is as follows: first, after the construction of the precast concrete pile 1 is completed, the water in the inner cavity of the concrete pile 1 needs to be pumped out, and then the concrete baffle 3 is lifted through the lifting ear 4, lifted into the inner cavity of the concrete pile 1, and placed on the retaining bar 2, and then concrete is poured into the concrete pouring space, so that the hardened concrete and the concrete pile 1 on the upper side form a whole.
[0021] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.
Claims
1. A precast concrete pile inner cavity anti-freezing and heaving structure, comprising a concrete pile (1) arranged below the ground, characterized in that: A baffle mechanism is provided in the inner cavity of the concrete pile (1), the baffle mechanism divides the inner cavity of the concrete pile (1) into an upper and lower layer, and the vertical distance from the baffle mechanism to the upper end surface of the concrete pile (1) forms a concrete pouring space.
2. The precast concrete pile inner cavity anti-freezing and heaving structure according to claim 1 is characterized in that: The barrier mechanism comprises a barrier rib (2) fixed on the concrete pile (1) and extending into the inner cavity of the concrete pile (1); a concrete barrier plate (3) adapted to the inner cavity of the concrete pile (1) is placed on the barrier rib (2).
3. The precast concrete pile inner cavity anti-freezing and heaving structure according to claim 2 is characterized in that: The vertical distance between the upper end surface of the concrete baffle (3) and the upper end surface of the concrete pile (1) is 2.5-2.6 m.
4. The precast concrete pile inner cavity anti-freezing and heaving structure according to claim 2 is characterized in that: A plurality of retaining bars (2) are arranged on the concrete pile (1), and the plurality of retaining bars (2) are distributed at equal intervals along the circumference of the concrete pile (1).
5. The precast concrete pile inner cavity anti-freezing expansion structure according to claim 4 is characterized in that: The lateral distance between the end of the retaining bar (2) located in the inner cavity of the concrete pile (1) and the side wall of the inner cavity of the concrete pile (1) is set at 50-60 mm.