Shallow-buried anchor block structure suitable for multiple high-pressure grey water pipelines
By using a shallow-buried anchor structure combining steel pipe piles with rectangular and enlarged ends at the corners of high-pressure ash water pipelines, the problem of safe operation of high-pressure ash water pipelines in confined spaces was solved, achieving the effects of reducing concrete usage and simplifying construction.
Patent Information
- Application Number
- CN202423282098.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing technologies require large volumes of concrete and large spaces for the design of anchor blocks at the corners of high-pressure ash water pipelines. This makes it difficult to ensure the safe operation of the pipeline within a limited space, and the construction is complex and costly.
The shallow-buried pier structure, which combines steel pipe piles with rectangular and enlarged ends, provides additional resistance through hot-dip galvanized steel pipe piles, reduces concrete usage, and utilizes the friction of the steel pipe piles and the bearing capacity of the foundation to offset pipeline pressure.
Ensuring safe pipeline operation within a limited space reduces concrete usage, simplifies construction, and lowers costs, making it a valuable tool for wider application.
Smart Images
Figure CN223593509U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a novel engineering measure of the pier structure of multiple high-pressure shallow-buried ash water pipelines. BACKGROUND
[0002] Some thermal power plants in Southeast Asia and Africa still use wet ash yards for ash storage, and use hydraulic ash water to transport ash water to the ash yard. Generally, the ash transportation distance of this kind of ash transportation mode is far, and high-pressure transportation is generally used to meet the transportation requirements, and the transportation pressure is generally about 1.0 Mpa, and a few can reach 2.0 MPa, which is determined according to the transportation distance and the pipe material. At the same time, due to the wear and damage of the ash transportation pipeline, in order to ensure the convenience of maintenance, the pipeline is often arranged in an open-air manner.
[0003] For multiple pipelines, the pressure of the ash water pipeline with high pressure at the corner is very large, especially in the case of a large plane corner angle, a pier needs to be set to offset the force of the pipeline at the corner to avoid displacement of the pipeline and cause damage to the pipeline. Generally, the stress form of the pier is set according to the direction of the pipeline, and the pier is generally divided into five basic forms of horizontal stress, vertical upward stress, vertical downward stress, horizontal + vertical upward stress, and horizontal + vertical downward stress.
[0004] The conventional pier relies on the weight of the reinforced concrete itself and the passive earth pressure of the stress side soil to offset the internal water pressure received by the pipeline. This structure is relatively simple, and the design and construction are relatively easy. However, under the action of high-pressure ash water, the pressure generated at the corner of the pipeline is very large, and at this time the volume of the reinforced concrete pier required is very large, and the construction space is also very large. When the construction space is limited and it is desired to reduce the amount of concrete, in order to ensure the safety of the pipeline, the design scheme must provide sufficient counteracting force to offset the force received by the pipeline, so the new design idea is provided for this situation. CONTENT OF THE UTILITY MODEL
[0005] The technical problem to be solved by the utility model is mainly the design of the pier of multiple high-pressure pipelines arranged in an open-air manner. Through the new design scheme, the pier that ensures the safe operation of the pipeline can be provided within a limited space, and the amount of concrete is reduced.
[0006] The technical scheme of the utility model is specifically as follows:
[0007] A shallow-buried pier structure suitable for multiple high-pressure ash water pipelines, comprising a pier rectangular end, a pier enlarged end connected to the pier rectangular end, and at least one steel pipe pile connected to the pier enlarged end; a high-pressure ash water pipeline is arranged on the pier rectangular end;
[0008] The high-pressure ash water pipeline comprises a bend pipeline, two ends of the bend pipeline are connected with straight high-pressure ash water pipelines respectively, and the bend pipeline and the straight high-pressure ash water pipelines are connected through high-pressure ash water pipeline flanges.
[0009] The steel pipe pile is a hot-dip galvanized steel pipe pile, and the hot-dip galvanized steel pipe pile is a small-diameter steel pipe pile with a diameter of not more than 200 mm.
[0010] The pressure of the high-pressure ash water pipeline reaches 1.6 MPa, the pipe diameter of the high-pressure ash water pipeline is 200 mm, the number of the high-pressure ash water pipelines is 5, and the high-pressure ash water pipelines are arranged in the open air.
[0011] The horizontal spacing of the steel pipe piles is not less than 2.5 times of the diameter of the steel pipe pile.
[0012] The vertical spacing of the steel pipe piles is not less than 2.5 times of the diameter of the steel pipe pile.
[0013] The utility model discloses a beneficial effect is: the utility model discloses mainly for the pier design of multiple high-pressure pipelines arranged in the open air, through the novel design scheme, can design the pier that guarantees pipeline safe operation in the limited space range, and reduced concrete consumption. This scheme can be in the land red line range, does not need to carry out the case of large -area and large -depth excavation, reaches the pier design bearing capacity required by the pipeline, and this scheme has the advantages of simple construction, low cost, practical and reliable, and the like, has good popularization value. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the pier plan arrangement drawing of the utility model;
[0015] Figure 2 It is 1-1 sectional view of the utility model;
[0016] Figure 3 It is 2-2 sectional view of the utility model;
[0017] Figure 4 It is 3-3 sectional view of the utility model. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0019] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model.
[0020] As shown in Figure 1 — Figure 4 A shallow-buried pier structure suitable for multiple high-pressure ash water pipelines, comprising a pier rectangular end 3, the pier rectangular end 3 is connected with a pier enlarged end 2, and at least one steel pipe pile 1 is connected to the pier enlarged end 2; a high-pressure ash water pipeline 4 is arranged on the pier rectangular end 3.
[0021] Foreign coal-fired power plants still use the wet ash discharge method. The utility model adopts a high-pressure ash water pipeline 4 to discharge to a wet ash field, the pipeline is arranged in the open air for easy maintenance, the total land range of the pipeline is limited, and the conventional pier method cannot meet the safety use requirements of the pipeline. Therefore, the utility model adopts the improved pier enlarged end 2 and steel pipe pile 1 combined working method, which can ensure the safe operation of the pipeline.
[0022] Further, the steel pipe pile 1 is a hot-dip galvanized steel pipe pile, and the hot-dip galvanized steel pipe pile is a small-diameter steel pipe pile with a diameter of not greater than 200 mm.
[0023] Further, the pressure of the high-pressure ash water pipeline 4 reaches 1.6 MPa; the pipe diameter of the high-pressure ash water pipeline 4 is 200 mm; the number of the high-pressure ash water pipelines 4 is five; and the high-pressure ash water pipelines 4 are arranged in the open air.
[0024] The high-pressure ash water pipeline 4 comprises a bend pipeline 41, both ends of the bend pipeline 41 are connected with straight high-pressure ash water pipelines 42, the bend pipeline 41 and the straight high-pressure ash water pipelines 42 are connected through high-pressure ash water pipeline flanges 5, and the high-pressure ash water pipeline flanges 5 are not arranged on the pier rectangular end 3.
[0025] Further, the following parameters are explained: Figure 1
[0026] A: The length of the pier enlarged end 2, which is enlarged outward from the rectangular end 45°, is determined according to the force of the high-pressure ash water pipeline 4 and the friction of the steel pipe pile 1.
[0027] B1: The horizontal spacing of the steel pipe pile 1, which is not less than 2.5 times the diameter of the steel pipe pile.
[0028] B2: The distance from the edge of the pier enlarged end 2 to the steel pipe pile 1, which is generally 0.5 m at least;
[0029] C: total width of the rectangular end 3 of the pier, which can be 1.0 m at minimum when space is limited.
[0030] D1: distance between the high-pressure ash water pipes 4, which is generally determined according to the process specialty, and the conventional requirement is that the room is not less than 2 times the diameter of the high-pressure ash water pipes 4 and is convenient for maintenance;
[0031] D2: distance from the high-pressure ash water pipes 4 to the rectangular end 3 of the pier, which is generally 0.5 m at minimum;
[0032] D: total length of the rectangular end 3 of the pier, which is equal to the sum of 5 times D1 and 2 times D2;
[0033] H1: vertical spacing of the steel pipe piles 1, which is not less than 2.5 times the diameter of the steel pipe piles 1.
[0034] H2: distance from the steel pipe piles 1 to the bottom of the enlarged head of the pier, which is generally 0.5 m at minimum;
[0035] H: height below the ground of the pier, which can be 1 m at minimum when space is limited.
[0036] θ: horizontal turning angle of the high-pressure ash water pipes 4
[0037] α: vertical inclination angle of the steel pipe piles 1, which is preferably 15-45°.
[0038] The technical solutions adopted by the present application are described as follows:
[0039] (1) The horizontal thrust of the high-pressure ash water pipes 4 is calculated according to the water direction and pipe pressure of the high-pressure ash water pipes 4.
[0040] (2) The geological parameters at the inflection point position are determined according to the geological exploration report, including the foundation bearing capacity, compression modulus, side wall friction resistance, etc., according to the inflection point position of the high-pressure ash water pipes 4.
[0041] (3) The pipe inflection point concrete wrapping design is carried out in the limited space, and the excavation depth is reduced as much as possible according to the land use range requirement, and the minimum excavation depth is not less than 1.0 m.
[0042] (4) The required horizontal resistance is calculated by removing the horizontal force shared by the pier gravity according to the stress analysis, and the number and length of the steel pipe piles 1 required to be provided are calculated. For convenience of construction, the diameter of the steel pipe piles 1 is generally 100-200 mm, and the specific specification is determined according to economic comparison.
[0043] (5) The arrangement design of the steel pipe piles 1 is carried out according to the area of the enlarged end 2 of the pier, and one row of piles is set as much as possible, and two rows of piles are considered in the case where the requirement cannot be met.
[0044] (6) The base trench of the pier is excavated, and the bottom elevation of the base trench is 7. The design is based on the actual parameters, and the disturbance to the surrounding soil is reduced as much as possible.
[0045] (7) In order to meet the requirement of durability, the steel pipe pile needs to be subjected to corrosion protection treatment, and a thickened hot-dip galvanized steel pipe is generally used. When the steel pipe pile is constructed, the disturbance to the surrounding soil is reduced as much as possible, and the disturbed soil is removed after the construction. The length of the pile body of the steel pipe pile 1 entering the soil is determined according to the calculation, and should not be less than 3000mm; the design ground elevation 6 is determined according to the actual parameters of the steel pipe pile 1.
[0046] After the high-pressure ash water pipeline 4 is positioned, the concrete is poured together with the head of the steel pipe pile that has been struck into the soil, the length of the reserved pile head of the steel pipe pile 1 entering the pier is not less than 100mm, and the design of the inflection pier is completed.
[0047] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the present application, some changes and improvements can be made, which should be considered as the protection range of the present application.
Claims
1. A shallow-buried pier structure suitable for a plurality of high-pressure grey water pipes, characterized by: The rectangular end (3) of the abutment is connected with an enlarged end (2) of the abutment, and at least one steel pipe pile (1) is connected to the enlarged end (2) of the abutment; a high-pressure ash water pipeline (4) is arranged on the rectangular end (3) of the abutment; The high-pressure ash water pipeline (4) comprises elbow pipelines (41), and the two ends of each elbow pipeline (41) are connected with straight high-pressure ash water pipelines (42); the elbow pipelines (41) and the straight high-pressure ash water pipelines (42) are connected through high-pressure ash water pipeline flanges (5).
2. A shallow-buried pier structure suitable for a plurality of high-pressure grey water pipes according to claim 1, characterized in that: The steel pipe pile (1) is a hot-dip galvanized steel pipe pile, and the hot-dip galvanized steel pipe pile is a small-diameter steel pipe pile with a diameter of not more than 200 mm.
3. A shallow-buried pier structure suitable for a plurality of high-pressure grey water pipes according to claim 1, characterized in that: The pressure of the high-pressure ash water pipeline (4) reaches 1.6 MPa; the pipe diameter of the high-pressure ash water pipeline (4) is 200 mm; the number of the high-pressure ash water pipelines (4) is 5; and the high-pressure ash water pipelines (4) are arranged in the open air.
4. A shallow-buried pier structure suitable for a plurality of high-pressure grey water pipes according to claim 1, characterized in that: The horizontal spacing of the steel pipe piles (1) is not less than 2.5 times the diameter of the steel pipe piles.
5. A shallow-buried pier structure suitable for a plurality of high-pressure grey water pipes according to claim 1, characterized in that: The vertical spacing of the steel pipe piles (1) is not less than 2.5 times the diameter of the steel pipe piles (1).