Quincuncial pile-shaped protection structure for gas pipeline around foundation pit
By adopting plum-shaped pile-shaped protective structure at the gas pipeline around the foundation pit, and using micro steel pipe piles and concrete to form a stable protective wall, the problem of easy damage to the gas pipeline during foundation pit construction is solved, and construction safety and efficiency are improved.
Patent Information
- Application Number
- CN202421431519.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-05-21
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-21
AI Technical Summary
During urban construction, the gas pipelines around the foundation pit are easily affected by foundation sinking, earth settlement or horizontal displacement, resulting in pipeline damage and posing a major construction safety threat.
A plum blossom pile-shaped protective structure is adopted for gas pipelines around the foundation pit, and a number of rows of reinforced pile groups are inserted between the gas pipelines and the foundation pit to form a plum blossom pile-shaped layout. These reinforced pile groups are composed of micro steel pipe piles with the same spacing. The pile body is inserted vertically into the foundation and is filled with silicate concrete to form a stable concrete wall.
Effectively resist the impact of earth settlement or horizontal displacement on gas pipelines under weak foundation conditions, avoid the occurrence of damage to gas pipelines, improve construction safety, and have high construction efficiency and short cycle.
Smart Images
Figure CN222935968U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of building construction, in particular to a plum blossom pile-shaped protection structure for gas pipelines around a foundation pit. Background Technique
[0002] In urban building construction, it often occurs that there are municipal underground pipelines around the foundation pit. Especially for gas pipelines, it will pose a great threat to the construction safety of foundation pit excavation. Therefore, it is necessary to take protective measures for adjacent gas pipelines in advance to solve the damage of underground pipelines around the foundation pit caused by foundation subsidence, soil settlement or horizontal displacement caused by foundation pit excavation construction.
[0003] Traditional gas pipeline protection measures are as follows: after clarifying the gas pipeline route, manually dig trenches along both sides of the gas pipeline under the witness of the participating parties and the gas property rights department. After the pipeline is exposed, construct a reinforced concrete protection wall on its outside, make a concrete cushion at the bottom, a reinforced concrete cover plate at the top, and fill the inside with medium sand. This traditional protection measure has the risk of digging into the gas pipeline, with relatively large potential safety hazards, low excavation protection efficiency, long construction period, and at the same time, there is also the problem of damage to the surrounding gas pipelines caused by large soil settlement or large horizontal displacement under soft foundation conditions. Content of the Utility Model
[0004] In order to solve the above problems, the utility model proposes a plum blossom pile-shaped protection structure for gas pipelines around a foundation pit.
[0005] The technical solution of the utility model is: a plum blossom pile-shaped protection structure for gas pipelines around a foundation pit, including a gas pipeline in the foundation around the foundation pit. A number of rows of reinforcement pile groups are inserted into the foundation between the gas pipeline and the foundation pit. The length of the reinforcement pile group is greater than the length of the foundation pit. The reinforcement pile group includes a number of micro steel pipe piles with the same spacing. The adjacent reinforcement pile groups are arranged staggeredly to form a plum blossom pile-shaped layout structure. The micro steel pipe piles are vertically inserted into the foundation. The upper end of the micro steel pipe pile slightly protrudes from the ground surface. The lower port of the micro steel pipe pile is a closed structure, and concrete is filled into the micro steel pipe pile, and the concrete is filled to the upper port of the micro steel pipe pile.
[0006] Preferably, a number of circular holes are evenly arranged along the generatrix direction on the side surface of the micro steel pipe pile. The size of the circular holes should meet the requirement that the concrete can flow out from the circular holes, and the concrete enters the foundation from the circular holes to form radial concrete columns.
[0007] Preferably, a circular short cylinder protruding from the outer side surface of the micro steel pipe pile is arranged radially at the circular hole.
[0008] Preferably, the lower end of the micro steel pipe pile is provided with a conical pointed head, and the inside of the conical pointed head is a hollow structure.
[0009] Preferably, the concrete is silicate concrete.
[0010] Preferably, a concrete hardening layer is provided on the exposed ground surface around the foundation pit, and the concrete hardening layer covers the gas pipeline.
[0011] Preferably, a row of square timbers is densely inserted between the inner row of micro steel pipe piles and the foundation pit, and the lower end of the square timber is provided with a pointed head.
[0012] Preferably, there is a gap between the square timbers, and an I-beam is inserted into the gap, and the insertion depth of the I-beam is the same as the insertion depth of the square timbers.
[0013] Preferably, the insertion depths of the micro steel pipe piles and the square timbers into the foundation are both greater than the buried depth of the gas pipeline, and the length of the square timber is less than the length of the micro steel pipe pile.
[0014] The beneficial technical effects of the present utility model are:
[0015] The protective structure formed by the micro steel pipe piles arranged in a plum blossom shape of the present utility model can form a structurally stable concrete wall between the gas pipeline and the foundation pit, which can effectively resist the impact on the gas pipeline caused by large soil settlement or large horizontal displacement under the condition of soft foundation, avoid the phenomenon of damage to the gas pipeline, and the construction process does not need to excavate trenches, effectively improving the safety of the gas pipeline during the construction process, and having the advantages of high construction efficiency and short cycle. Description of the Drawings
[0016] Figure 1 is the top view structural schematic diagram of the present utility model;
[0017] Figure 2 is Figure 1 the sectional structural schematic diagram in the A-A direction of
[0018] Figure 3 is the three-dimensional structural schematic diagram of the micro steel pipe pile of the present utility model (a short cylinder is arranged at the circular hole in the figure).
[0019] In the figure, 11. Foundation pit, 12. Gas pipeline, 13. Micro steel pipe pile, 131. Circular hole, 132. Short cylinder, 133. Conical pointed head, 14. Concrete, 141. Radial concrete column, 15. Concrete hardening layer, 16. Square timber, 17. I-beam. Detailed Embodiment
[0020] Example 1, see the attached drawings of the specification Figure 1-2, A plum-blossom pile-shaped protection structure for gas pipelines around a foundation pit 11, which includes gas pipelines in the foundation around the foundation pit 11. There is a retaining structure in the foundation pit 11. Several rows of reinforcement pile groups are inserted into the foundation between the gas pipelines and the foundation pit 11. The reinforcement pile group includes several micro steel pipe piles 13 with the same spacing. The spacing between adjacent reinforcement pile groups is the same and they are arranged staggeredly to form a plum-blossom pile-shaped layout structure. The micro steel pipe piles 13 are vertically inserted into the foundation. The lower port of the micro steel pipe pile 13 is a closed structure, and portland cement concrete 14 is injected into the micro steel pipe pile 13.
[0021] The exposed ground surface around the foundation pit 11 is provided with a concrete hardening layer 15, which forms a hard protection on the exposed ground surface. A row of emergency wooden beams 16 are densely inserted between the innermost row of micro steel pipe piles 13 and the foundation pit 11. There are gaps between the wooden beams 16, and I-beams 17 are inserted into these gaps. The insertion depth of the I-beams is the same as that of the wooden beams. An interlaced occlusion structure is formed between the wooden beams through the I-beams. The combined action of the I-beams and the wooden beams further improves the protection effect.
[0022] The insertion depths of the micro steel pipe piles 13 and the wooden beams 16 into the foundation are both greater than the buried depth of the gas pipelines. The protection area of the protection wall formed by the micro steel pipe piles 13 is larger, and the protection effect on the gas pipelines is better.
[0023] During the construction of the protection structure of this embodiment, micro steel pipe piles 13 are arranged in a row in a plum-blossom shape between the retaining structure of the foundation pit 11 and the gas pipelines. Three rows of micro steel pipe piles 13 are set. Then, portland cement concrete 14 is injected into the micro steel pipe piles 13, and the injection stops after the slurry overflows from the pipe orifice. The protection structure formed by the micro steel pipe piles 13 in a plum-blossom pile shape can form a concrete 14 wall with a stable structure between the gas pipelines and the foundation pit 11, which can effectively resist the impact on the gas pipeline caused by large soil settlement or large horizontal displacement under the condition of soft foundation, and avoid the phenomenon of damaging the gas pipeline. At the same time, there is no need to excavate trenches during the construction process, and both the safety and the construction efficiency are relatively high.
[0024] Embodiment 2, see the attached drawings in the specification Figure 2-3 , On the basis of Embodiment 1, several round holes 131 are evenly arranged along the generatrix direction on the side surface of the micro steel pipe pile 13. During the injection process of the concrete 14, it will be pressed out from the round holes 131. Part of the concrete 14 enters the soft foundation laterally to form radial concrete columns 141, and part flows down along the outer side wall of the micro steel pipe pile 13 and adheres between the foundation soil layer and the outer side surface of the micro steel pipe pile 13, which can greatly improve the firmness of the combination of the micro steel pipe pile 13 and the foundation soil, etc., and thus improve the stability of the entire protection structure.
[0025] The lower end of the micro steel pipe pile 13 is provided with a conical pointed head 133, and a short cylinder 132 protruding from the outer side surface of the micro steel pipe pile 13 is arranged radially at the circular hole 131. The arranged short cylinder 132 is used to prevent soft soil from entering the inside of the pipe body from the circular hole 131 during the process of vertically inserting the micro steel pipe pile 13 into the foundation, and ensure the overall strength after the concrete 14 is injected and solidified.
Claims
1. A plum blossom pile-shaped protective structure for gas pipelines around a foundation pit, including gas pipelines in the foundation around the foundation pit, characterized by: Several rows of reinforcement pile groups are inserted into the foundation between the gas pipeline and the foundation pit. The reinforcement pile groups include several micro steel pipe piles with the same spacing. Adjacent reinforcement pile groups are staggered to form a plum blossom pile layout structure. The micro steel pipe piles are vertically inserted into the foundation. The lower port of the micro steel pipe pile is a closed structure, and concrete is filled in the micro steel pipe pile.
2. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 1 is characterized by: The side surface of the micro steel pipe pile is evenly provided with a plurality of circular holes along the generatrix direction, and concrete enters into the foundation through the circular holes to form radial concrete columns.
3. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 2 is characterized by: The circular hole is provided with a short cylinder radially protruding from the outer side of the micro steel pipe pile.
4. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 3 is characterized by: The lower end of the micro steel pipe pile is provided with a conical tip.
5. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 1 is characterized by: The concrete is silicate concrete.
6. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 1 is characterized by: The exposed surface around the foundation pit is provided with a concrete hardening layer.
7. The plum blossom pile protection structure for gas pipelines around a foundation pit according to claim 1 is characterized by: A row of square timbers is densely inserted between the inner row of micro steel pipe piles and the foundation pit.
8. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 7 is characterized by: Gaps are arranged between the square timbers, I-beams are inserted into the gaps, and the insertion depth of the I-beams is the same as the insertion depth of the square timbers.
9. The plum blossom pile-shaped protective structure for gas pipelines around a foundation pit according to claim 1 is characterized by: The depths to which the micro steel pipe piles and square timbers are inserted into the foundation are greater than the buried depth of the gas pipeline.