Pipeline laying foundation structure and water conveying line applying same
The pipeline laying foundation structure, which combines a concrete and steel reinforcement base layer with a foam board compaction layer, solves the problem of uneven pipeline settlement in water diversion projects, achieving a safe and reliable foundation structure and economical construction results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ELECTRIC POWER PLANNING SURVEY & DESIGN INST
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-26
Smart Images
Figure CN224281358U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of foundation construction for water diversion and transportation pipelines, specifically to a pipeline foundation construction and a water transportation line using the same. Background Technology
[0002] Over the years, my country's water diversion projects have developed rapidly. In recent years, there has been an increasing number of long-distance, high-flow-rate regional water diversion projects, many of which are large-diameter pipeline water conveyance projects. The traditional approach is to use only concrete pipe seats or sand arc foundations for the pipelines.
[0003] Because large and medium-sized water diversion projects have long water transmission lines, the main water transmission structures are mostly laid out with pipelines, and the pipeline areas are widely distributed with varied and complex geological conditions, they also need to adapt to high groundwater, sand layers, soft soil, rock foundations, various composite strata, and frequently changing geological conditions. In particular, for socket-type rigid pipelines, uneven settlement at the junction of soft and hard foundations leads to prominent risks of joint disconnection and leakage. Therefore, the construction of safe and economical pipeline foundations is a major challenge in the construction of water diversion projects. Utility Model Content
[0004] In view of this, it is necessary to propose a pipeline laying foundation structure and a water transmission line using it to address the above-mentioned problems, so as to overcome some of the shortcomings of the background technology and solve the following technical problems:
[0005] How to reduce uneven settlement of water diversion project pipelines on soft and hard foundations, while economically improving the safety and reliability of the pipeline laying foundation structure.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] This utility model proposes a pipeline laying foundation structure, which is set below the water transmission line of a water diversion project, serving as the load-bearing foundation for four sequentially connected pipe sections of the water diversion project pipeline. The four pipe sections are the first pipe section, the second pipe section, the third pipe section, and the fourth pipe section. The pipeline laying foundation structure includes a first foundation layer, a second foundation layer, a third foundation layer, and a fourth foundation layer, all constructed of concrete, and multiple connecting steel bars. The gap between the second foundation layer and the adjacent third foundation layer is the first gap. The multiple connecting steel bars are arranged laterally at intervals and suspended in the first gap. The front end of each connecting steel bar is constructed and fixed in the second foundation layer, and the rear end of each connecting steel bar is constructed and fixed in the third foundation layer. The first gap is filled with foam board.
[0008] The first foundation layer is used to support the first pipe section;
[0009] The second foundation layer is used to support the second pipe section;
[0010] The third foundation layer is used to support the third pipe section; the third foundation layer includes two layers of first foundation layers stacked one on top of the other; one of the first foundation layers is a compacted sand and gravel layer, and the other of the first foundation layers is made of concrete, or both first foundation layers are made of concrete and formed as one piece.
[0011] The fourth foundation layer is used to support the fourth pipe section.
[0012] Furthermore, the gap between the first base layer and the adjacent second base layer is called the second gap, which is filled with sand and gravel.
[0013] Furthermore, the two first foundation layers are, from top to bottom, the first upper foundation layer and the first lower foundation layer; the first upper foundation layer is a compacted sand and gravel layer, and the first lower foundation layer is constructed of concrete.
[0014] Furthermore, a pier is installed outside the second pipe section.
[0015] Furthermore, when the second pipe section is not equipped with a pier, one layer of the first foundation is a compacted sand and gravel layer, and the other layer of the first foundation is constructed of concrete.
[0016] Furthermore, the longitudinal cross-sectional structure of the first foundation layer located below the third foundation layer is a right trapezoid.
[0017] Furthermore, the fourth foundation layer includes two layers of second foundation layers stacked one on top of the other; one of the second foundation layers is a compacted sand and gravel layer, and the other of the second foundation layers is constructed of concrete.
[0018] Furthermore, the fourth foundation layer is constructed of concrete.
[0019] Furthermore, the fourth foundation layer is a compacted sand and gravel layer.
[0020] This utility model also proposes a water conveyance line, suitable for water diversion projects, which includes:
[0021] Multiple pipeline laying foundation structures as described above;
[0022] At least one second basic construct;
[0023] The second foundation structure is used to support the pressure-bearing foundation of the other four pipe sections that are connected in sequence in the water diversion project. The other four pipe sections are the fifth, sixth, seventh, and eighth pipe sections. There is a sand and gravel compaction layer under the fifth, sixth, seventh, and eighth pipe sections. The sand and gravel compaction layer under the fifth, sixth, seventh, and eighth pipe sections is an integrated sand and gravel foundation layer. A sixth sand and gravel compaction reinforcement layer with an inverted umbrella-shaped longitudinal cross-section is stacked under the fifth sand and gravel foundation layer. The top surface of the sixth sand and gravel compaction reinforcement layer faces the sixth and seventh pipe sections.
[0024] The beneficial effects of this utility model are as follows:
[0025] This utility model can reduce the uneven settlement of pipelines in water diversion projects on soft and hard foundations, and at the same time economically improve the safety and reliability of the pipeline laying foundation structure of water diversion projects.
[0026] This utility model can be adapted to the construction of pipeline laying foundation structures on different foundations such as soil and rock, as well as the water diversion and transportation lines of water diversion projects using it. It can also adapt to the connection methods of various pipeline foundation types, thereby greatly reducing the impact of uneven and concentrated settlement during pipeline foundation transitions in terms of structure.
[0027] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description
[0028] Figure 1 This is a right-side cross-sectional view of the pipeline laying foundation structure in the first embodiment of Example 1, which relates to the present utility model.
[0029] Figure 2 This is a right-side cross-sectional view of the second embodiment of the pipeline laying foundation structure involved in this utility model in Example 1.
[0030] Figure 3 This is a right-side cross-sectional view of the third embodiment of the pipeline laying foundation structure involved in this utility model in Example 1.
[0031] Figure 4 This is a right-side cross-sectional view of the second foundation structure of the water transmission line involved in this utility model.
[0032] Figure 5 for Figure 1 A cross-sectional half-section view in the AA direction.
[0033] Explanation of reference numerals in the attached figures:
[0034] First pipe section 100, second pipe section 200, third pipe section 300, fourth pipe section 400; first foundation layer 1; second foundation layer 2; third foundation layer 3; fourth foundation layer 4; first foundation layer 31; anchor block 2001; connecting steel bar 2003; first gap 203; second gap 102; second foundation layer 41; fifth pipe section 500; sixth pipe section 600; seventh pipe section 700; eighth pipe section 800; fifth gravel foundation layer 900; sixth gravel compacted reinforcement layer 1000. Detailed Implementation
[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be further described clearly and completely below in conjunction with the embodiments of this utility model. It should be noted that the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0036] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] The terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the use of “first,” “second,” “third,” and “fourth” to designate a feature may explicitly or implicitly include one or more of that feature.
[0038] Example 1
[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown:
[0040] This embodiment proposes a pipeline laying foundation structure, which is set below the water transmission line of a water diversion project, serving as the load-bearing foundation for four pipe sections that are sequentially connected in the water diversion project pipeline. The four pipe sections are a first pipe section 100, a second pipe section 200, a third pipe section 300, and a fourth pipe section 400. The pipeline laying foundation structure includes a first foundation layer 1, a second foundation layer 2, a third foundation layer 3, and a fourth foundation layer 4, all constructed of concrete, and multiple connecting steel bars 2003. The gap between the second foundation layer 2 and the adjacent third foundation layer 3 is a first gap 203. The multiple connecting steel bars 2003 are arranged laterally at intervals and suspended in the first gap 203. The front end of each connecting steel bar 2003 is constructed and fixed in the second foundation layer 2, and the rear end of each connecting steel bar 2003 is constructed and fixed in the third foundation layer 3. The first gap 203 is filled with foam board.
[0041] The first foundation layer 1 is used to support the first pipe section 100;
[0042] The second foundation layer 2 is used to support the second pipe section 200;
[0043] The third foundation layer 3 is used to support the third pipe section 300; the third foundation layer 3 includes two layers of first foundation layers 31 stacked one above the other; one of the first foundation layers 31 is a compacted sand and gravel layer, and the other of the first foundation layers 31 is made of concrete, or both first foundation layers 31 are made of concrete and formed as one piece.
[0044] The fourth foundation layer 4 is used to support the fourth pipe section 400.
[0045] Specifically, the foam board is a polyethylene closed-cell foam board.
[0046] Ideally, the gap between the first base layer 1 and the adjacent second base layer 2 is the second gap 102, which is filled with sand and gravel.
[0047] Example 2
[0048] Example 2 is a further optimized design of Example 1;
[0049] like Figure 1 , Figure 2 As shown:
[0050] The two-layer first foundation layer 31 are, from top to bottom, the first upper foundation layer and the first lower foundation layer; the first upper foundation layer is a compacted sand and gravel layer, and the first lower foundation layer is constructed of concrete.
[0051] Example 3
[0052] Example 3 is a further optimized design of Example 1 or Example 2;
[0053] like Figure 2 , Figure 3 As shown:
[0054] The second pipe section 200 is equipped with a pier 2001.
[0055] Example 4
[0056] Example 4 is a further optimized design of Example 1;
[0057] like Figure 1 , Figure 5 As shown:
[0058] When the second pipe section 200 is not equipped with a pier 2001, one of the first foundation layers 31 is a compacted sand and gravel layer, and the other first foundation layer 31 is constructed of concrete.
[0059] Example 5
[0060] Example 5 is a further optimized design of Example 1;
[0061] like Figure 2 As shown:
[0062] The longitudinal cross-sectional structure of the first foundation layer 31, located below the third foundation layer 3, is a right trapezoid.
[0063] Example 6
[0064] Example 6 is a further optimized design of Example 1 or Example 5;
[0065] like Figure 2 As shown:
[0066] The fourth foundation layer 4 includes two layers of second foundation layers 41 stacked one on top of the other; one layer of the second foundation layer 41 is a compacted sand and gravel layer, and the other layer of the second foundation layer 41 is constructed of concrete.
[0067] Further optimized, the longitudinal cross-sectional structure of the second base layer 41 is an inverted triangle; specifically, the second base layer 41 with an inverted triangle longitudinal cross-sectional structure and the first base layer 31 located below the third base layer 3 with a right trapezoidal longitudinal cross-sectional structure form a progressively transitional base layer with an inverted triangle longitudinal cross-sectional structure.
[0068] Specifically, the longitudinal cross-sectional structure of the second basic layer 41 is uniformly thinned from the thick side to the thin side.
[0069] Example 7
[0070] Example 7 is a further optimized design of any technical solution in any of Examples 1-5;
[0071] like Figure 3 As shown:
[0072] The fourth foundation layer 4 is constructed of concrete.
[0073] Example 8
[0074] Example 8 is a further optimized design of any technical solution in any of Examples 1-5;
[0075] like Figure 1 As shown:
[0076] The fourth foundation layer 4 is a compacted sand and gravel layer.
[0077] Example 9
[0078] Example 9 is a further optimized design of any technical solution in any of Examples 1-8;
[0079] like Figures 1-3 , Figure 5 As shown:
[0080] Preferably, the above-mentioned compacted sand and gravel layer can be made of standard medium-coarse sand.
[0081] Preferably, the thickness of the concrete covering the pier is 1.0m to 1.5m.
[0082] Preferably, the width of the first gap 203 is 15mm to 30mm.
[0083] Preferably, the thickness of the fourth base layer 4 is 20cm to 60cm.
[0084] Preferably, the compaction degree of the above-mentioned sand and gravel compacted layer is ≥0.90.
[0085] Preferably, the volume ratio of crushed stone to medium-coarse sand in the above-mentioned compacted sand and gravel layer is 7:3.
[0086] Ideally, the town pier 2001 is further reinforced with a toothed wall of 1.0m to 2.0m in length.
[0087] Ideally, the connecting steel bar 2003 is coated with a solvent-free epoxy coal tar pitch layer.
[0088] Ideally, at least one of the four pipe sections is provided with a rigid pad for assisting in positioning.
[0089] Example 10
[0090] like Figures 1-5 As shown:
[0091] This embodiment proposes a water conveyance line suitable for water diversion projects, which includes:
[0092] Multiple pipeline laying foundation structures as described in any of the technical solutions in any of the embodiments 1-9;
[0093] At least one second basic construct;
[0094] The second foundation structure is used to support the pressure-bearing foundation of the other four pipe sections that are connected in sequence in the water diversion project. The other four pipe sections are the fifth pipe section 500, the sixth pipe section 600, the seventh pipe section 700, and the eighth pipe section 800. There is a sand and gravel compaction layer under the fifth pipe section 500, the sixth pipe section 600, the seventh pipe section 700, and the eighth pipe section 800. The sand and gravel compaction layer under the fifth pipe section 500, the sand and gravel compaction layer under the sixth pipe section 600, the sand and gravel compaction layer under the seventh pipe section 700, and the sand and gravel compaction layer under the eighth pipe section 800 are integrated into a fifth sand and gravel foundation layer 900. A sixth sand and gravel compaction reinforcement layer 1000 with an inverted umbrella-shaped longitudinal cross-section structure is stacked under the fifth sand and gravel foundation layer 900. The top surface of the sixth sand and gravel compaction reinforcement layer 1000 faces the sixth pipe section 600 and the seventh pipe section 700.
[0095] This utility model relates to a pipeline laying foundation structure and a water transmission line using it. It involves a connection and transition structure for pipeline foundations that can adapt to different geological conditions. Structurally, it greatly optimizes the impact of uneven and concentrated settlement during the transition of the pipe foundation, without adding additional construction technology and construction difficulty. It can shorten the construction period and reduce the project cost. It has obvious advantages for the construction of long-distance, large-diameter buried water transmission pipelines and can be promoted and applied in engineering projects.
[0096] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A pipeline laying foundation structure, installed below the water conveyance line of a water diversion project, serving as the load-bearing foundation for four sequentially connected pipe sections of the water conveyance line, wherein the four pipe sections are a first pipe section (100), a second pipe section (200), a third pipe section (300), and a fourth pipe section (400), characterized in that, The pipeline laying foundation structure includes a first foundation layer (1) made of concrete, a second foundation layer (2) made of concrete, a third foundation layer (3) made of concrete, a fourth foundation layer (4) made of concrete, and multiple connecting steel bars (2003); the gap between the second foundation layer (2) and the adjacent third foundation layer (3) is the first gap (203), the multiple connecting steel bars (2003) are arranged laterally at intervals and suspended in the first gap (203), the front end of each connecting steel bar (2003) is constructed and fixed in the second foundation layer (2), and the rear end of each connecting steel bar (2003) is constructed and fixed in the third foundation layer (3), the first gap (203) is filled with foam board; The first foundation layer (1) is used to support the first pipe section (100); The second foundation layer (2) is used to support the second pipe section (200); The third foundation layer (3) is used to support the third pipe section (300); the third foundation layer (3) includes two layers of first foundation layers (31) stacked one above the other; one of the first foundation layers (31) is a sand and gravel compacted layer, and the other of the first foundation layers (31) is made of concrete, or both of the first foundation layers (31) are made of concrete and formed as one piece. The fourth foundation layer (4) is used to support the fourth pipe section (400).
2. The pipeline laying foundation structure according to claim 1, characterized in that, The gap between the first base layer (1) and the adjacent second base layer (2) is the second gap (102), which is filled with sand and gravel.
3. The pipeline laying foundation structure according to claim 1, characterized in that, The two-layer first foundation layer (31) are, from top to bottom, the first upper foundation layer and the first lower foundation layer; the first upper foundation layer is a sand and gravel compacted layer, and the first lower foundation layer is constructed of concrete.
4. The pipeline laying foundation structure according to claim 1, characterized in that, The second pipe section (200) is equipped with a pier (2001).
5. The pipeline laying foundation structure according to claim 1, characterized in that, When the second pipe section (200) is not equipped with a pier (2001), one of the first foundation layers (31) is a sand and gravel compacted layer, and the other first foundation layer (31) is made of concrete.
6. The pipeline laying foundation structure according to claim 1, characterized in that, The longitudinal cross-sectional structure of the first foundation layer (31) located below the third foundation layer (3) is a right trapezoid.
7. The pipeline laying foundation structure according to claim 1, characterized in that, The fourth foundation layer (4) includes two layers of second foundation layers (41) stacked one on top of the other; one of the second foundation layers (41) is a compacted sand and gravel layer, and the other of the second foundation layers (41) is made of concrete.
8. The pipeline laying foundation structure according to claim 1, characterized in that, The fourth foundation layer (4) is made of concrete.
9. The pipeline laying foundation structure according to claim 1, characterized in that, The fourth foundation layer (4) is a compacted sand and gravel layer.
10. A water conveyance line, suitable for water diversion projects, characterized in that, The water transmission line includes: Multiple pipeline laying foundation structures as described in any one of claims 1-9; At least one second basic construct; The second foundation structure serves as the pressure-bearing foundation for the four additional pipe sections that are sequentially connected in the water diversion project's water conveyance line. These four additional pipe sections are the fifth pipe section (500), the sixth pipe section (600), the seventh pipe section (700), and the eighth pipe section (800). Each of the fifth pipe section (500), the sixth pipe section (600), the seventh pipe section (700), and the eighth pipe section (800) has a compacted sand and gravel layer underneath it. The sand and gravel layer under the fifth pipe section (500) is... The solid layer, the sand and gravel compacted layer of the sixth pipe section (600), the sand and gravel compacted layer of the seventh pipe section (700) and the sand and gravel compacted layer of the eighth pipe section (800) are integrated into a fifth sand and gravel foundation layer (900); a sixth sand and gravel compacted reinforcement layer (1000) with an inverted umbrella-shaped longitudinal cross-section is stacked below the fifth sand and gravel foundation layer (900), and the top surface of the sixth sand and gravel compacted reinforcement layer (1000) faces the sixth pipe section (600) and the seventh pipe section (700).