Aqueduct structure for improving flow capacity of large aqueduct

Abstract

The present invention discloses an aqueduct structure for improving the flow capacity of a large aqueduct, the aqueduct structure includes a plurality of aqueducts connected along the water flow direction, a plurality of tie rods are arranged at intervals on each aqueduct along the water flow direction, and also includes: an upper steel plate, the upper steel plate is laid on the top surface of the tie rod along the water flow direction, and its two side edges parallel to the water flow direction are closely fitted with the top surface of the aqueduct; a lower steel plate, the lower steel plate is laid on the bottom surface of the tie rod along the water flow direction, and is fixedly connected to the upper steel plate through a fastening assembly, and the two side edges of the lower steel plate parallel to the water flow direction are closely fitted with the inner side wall of the aqueduct; and a plurality of exhaust pipes, the exhaust pipes are arranged at intervals along the water flow direction, the exhaust pipes penetrate the upper steel plate and the lower steel plate and are fixedly connected thereto, and are used to connect the internal and external environments of the aqueduct. The present invention transforms the aqueduct structure into a "low pressure flow" structure, avoids damage to the original aqueduct concrete structure, and significantly improves the flow capacity of the large aqueduct.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale aqueduct structure optimization, and in particular to an aqueduct structure for improving the flow capacity of a large-scale aqueduct. Background Art

[0002] The geographical distribution of water resources in my country is very uneven. In order to rationally allocate water resources and balance the development of various regions, many cross-basin water transfer projects have developed rapidly. Since the 21st century, my country has built a number of large-scale water transfer projects. With the increase in the number of operating years, the water demand for urban water supply, agricultural irrigation water consumption and ecological water replenishment will undergo very large changes. Constrained by the water supply demand and social and economic conditions during the construction period, the original designed water transfer scale will not be able to meet the new water demand. Water transfer structures include water diversion (supply) tunnels, water transfer pipelines, channels, aqueducts and culverts. Among them, the aqueduct is a key water transfer structure that connects the water transfer channel across rivers, valleys and roads. The flow capacity of the aqueduct directly determines the water transfer capacity of the water transfer project. Therefore, the improvement of the flow capacity of the aqueduct is the key point to increase the scale of water transfer.

[0003] At present, for aqueducts with insufficient water-passing sections, the main engineering measures to improve the flow capacity of aqueducts include: optimizing the water flow conditions at the inlet and outlet of the aqueduct, applying roughening materials on the flow surface, optimizing the structure of the aqueduct, and increasing the flow channel. The main purpose of optimizing the water flow conditions at the inlet and outlet of the aqueduct is to improve the flow conditions, reduce local head losses, and eliminate the water flow hitting the top tie rods. The improvement of the flow capacity is not significant. Applying roughening materials on the flow surface can reduce the head loss along the way to increase the flow capacity to a certain extent, but it cannot significantly increase the flow capacity. Optimizing the structure of the aqueduct includes adding steel plates to the aqueduct, raising the side walls, and raising the top tie rods. Generally, part of the aqueduct structure will be dismantled, which will have an adverse effect on the durability and operation safety of large aqueducts, and the degree of improvement in the flow capacity is limited. Although adding flow channels can solve the problem of improving flow capacity once and for all, it will adjust the layout of the original project, which is not suitable for water diversion projects with high water supply guarantee rates, and will greatly increase the project investment cost, which is not economical. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an aqueduct structure that improves the flow capacity of a large aqueduct. The present invention arranges two layers of steel plates on the bottom surface of the aqueduct tie rod and the top surface of the aqueduct, and sets waterproof materials between the steel plates and the aqueduct concrete structure for anti-seepage, thereby turning the aqueduct structure into a "low-pressure flow" structure. The use of this invention solves the problem that the use of traditional engineering measures will damage the original aqueduct concrete structure, the degree of improvement in the flow capacity is not significant, and the structure is not convenient for disassembly and maintenance; it solves the problem that the use of engineering measures to build a new channel will greatly increase the project investment.

[0005] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0006] An aqueduct structure for improving the flow capacity of a large aqueduct, the aqueduct structure comprising a plurality of aqueducts connected along a water flow direction, each of the aqueducts being provided with a plurality of tie rods at intervals along the water flow direction, and further comprising:

[0007] An upper steel plate, which is laid on the top surface of the tie rod along the water flow direction, and its two side edges parallel to the water flow direction are closely fitted with the top surface of the aqueduct;

[0008] A lower steel plate, which is laid on the bottom surface of the pull rod along the water flow direction and is fixedly connected to the upper steel plate through a fastening assembly, and the two sides of the lower steel plate parallel to the water flow direction are tightly fitted to the inner wall of the aqueduct;

[0009] and a plurality of exhaust pipes, wherein the exhaust pipes are arranged at intervals along the water flow direction, and the exhaust pipes penetrate the upper steel plate and the lower steel plate and are fixedly connected thereto, so as to connect the interior of the aqueduct with the external environment.

[0010] Preferably, the upper steel plate is composed of a structural seam upper steel plate, an exhaust pipe upper steel plate and a standard upper steel plate, and the lower steel plate is composed of a structural seam lower steel plate, an exhaust pipe lower steel plate and a standard lower steel plate; the structural seam upper steel plate is arranged above the structural seam between adjacent aqueducts, and the structural seam lower steel plate is correspondingly arranged below the structural seam upper steel plate and fixedly connected thereto; the exhaust pipe upper steel plate is arranged on the top surface of an adjacent tie rod, an opening for the exhaust pipe to pass through is provided on the exhaust pipe upper steel plate, and the exhaust pipe lower steel plate is correspondingly arranged below the exhaust pipe upper steel plate and fixedly connected thereto, and an opening for the exhaust pipe to pass through is provided on the exhaust pipe lower steel plate; the standard upper steel plate is arranged on the top surface of an adjacent tie rod, and the standard lower steel plate is correspondingly arranged below the standard upper steel plate and fixedly connected thereto.

[0011] Preferably, both side edges of the lower steel plate parallel to the water flow direction extend downward to form extension portions that can fit against the inner wall of the aqueduct, and a support rod for pressing the extension portions outward is connected between the two extension portions.

[0012] Preferably, the fastening assembly comprises a fixing bolt and a fixing nut, and an upper fixing gasket and a lower fixing gasket are respectively provided on the mounting surfaces of the fastening assembly with the upper steel plate and the lower steel plate.

[0013] Preferably, the contact surfaces of the upper steel plate and the lower steel plate with the aqueduct are provided with waterproof material.

[0014] Preferably, the two side edges of the upper steel plate parallel to the water flow direction are overlapped on the top surface of the aqueduct.

[0015] Preferably, the exhaust pipe top elevation needs to be higher than the upper steel plate top elevation.

[0016] Preferably, the bottom end of the exhaust pipe is flush with the bottom surface of the lower steel plate to prevent the exhaust pipe from disturbing the water flow.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] The present invention arranges two layers of steel plates on the bottom surface of the tie rod and the top surface of the aqueduct, and sets an exhaust pipe with a certain height to connect with the bottom steel plate of the tie rod. The bottom steel plate of the tie rod is fixed to the top steel plate of the aqueduct by bolts, and waterproof materials are set between the steel plate and the concrete structure of the aqueduct for anti-seepage. When the flow rate of the aqueduct is greatly increased, the water level at the inlet of the aqueduct will be higher than the full water level of the aqueduct. Due to the existence of the upper and lower steel plates and the exhaust pipe, the height of the exhaust pipe can be adjusted according to the water level, turning the aqueduct structure into a "low pressure flow" structure. The exhaust pipe can replenish air to the water flow in real time, reducing the cavitation damage of the water flow to the aqueduct structure. Such a structural arrangement will avoid damage to the original concrete structure of the aqueduct, and the structure is easy to install and disassemble, has high operability and good economy, and the most important thing is that the flow capacity of the large aqueduct can be timely improved according to demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of the aqueduct structure of the present invention;

[0020] Figure 2 for Figure 1 Section 1-1;

[0021] Figure 3 for Figure 1 Section 2-2;

[0022] Figure 4 for Figure 1 Section 3-3;

[0023] Figure 5 for Figure 2 Medium A large sample picture;

[0024] Figure 6 for Figure 3 Medium B large sample drawing;

[0025] Figure 7 for Figure 4 Medium C large sample picture.

[0026] Numbers in the figure: 1. aqueduct; 2. tie rod; 3. upper steel plate; 31. upper steel plate of structural joint; 32. upper steel plate of exhaust pipe; 33. standard upper steel plate; 4. lower steel plate; 41. lower steel plate of structural joint; 42. lower steel plate of exhaust pipe; 43. standard lower steel plate; 44. extension; 5. exhaust pipe; 6. support rod; 7. waterproof material; 8. fastening assembly; 81. fixing bolt; 82. fixing nut; 83. upper fixing gasket; 84. lower fixing gasket; 9. structural joint. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent.

[0028] like Figure 1 , 2 As shown, the present invention provides an aqueduct structure for improving the flow capacity of a large aqueduct. The aqueduct structure includes a plurality of aqueducts 1 connected along the water flow direction. A plurality of tie rods 2 are arranged at intervals along the water flow direction on each aqueduct 1. The aqueduct structure also includes an upper steel plate 3, a lower steel plate 4 and an exhaust pipe 5.

[0029] like Figure 1 , 2 As shown in Figures 5 and 6, a structural joint 9 is provided between adjacent aqueducts 1. The upper steel plate 3 is laid on the top surface of the tie rod 2 along the water flow direction, and is composed of a structural joint upper steel plate 31, an exhaust pipe upper steel plate 32, and a standard upper steel plate 33. The lower steel plate 4 is laid on the bottom surface of the tie rod 2 along the water flow direction, and is composed of a structural joint lower steel plate 41, an exhaust pipe lower steel plate 42, and a standard lower steel plate 43. The structural joint upper steel plate 31 is provided above the structural joint 9 between adjacent aqueducts 1, and its two side plates perpendicular to the water flow direction are respectively overlapped on the tie rods 2 of the two adjacent aqueducts 1, and the structural joint lower steel plate 41 is correspondingly provided below the structural joint upper steel plate 31 and fixedly connected thereto through the fastening assembly 8. The exhaust pipe upper steel plate 32 is arranged on the top surface of the adjacent tie rod 2, and an opening is provided on the exhaust pipe upper steel plate 32 for the exhaust pipe 5 to pass through. Correspondingly, the exhaust pipe lower steel plate 42 is correspondingly arranged below the exhaust pipe upper steel plate 32 and is fixedly connected thereto by a fastening assembly 8, and an opening is provided on the exhaust pipe lower steel plate 42 for the exhaust pipe 5 to pass through; the standard upper steel plate 33 is arranged on the top surface of the adjacent tie rod 2, and correspondingly, the standard lower steel plate 43 is correspondingly arranged below the standard upper steel plate 33 and is fixedly connected thereto by a fastening assembly 8.

[0030] like Figure 4 , 7 As shown, the upper steel plate 3 is overlapped with the top surface of the aqueduct 1 on both sides parallel to the water flow direction, and a waterproof material 7 is arranged between the upper steel plate 3 and the top surface of the aqueduct 1. The waterproof material 7 plays a role in leveling and stopping water, ensuring that the upper steel plate 3 and the concrete structure of the aqueduct 1 are closely connected.

[0031] like Figure 6 As shown, both side edges of the lower steel plate 4 parallel to the water flow direction extend downward to form extension portions 44 that can fit against the inner wall of the aqueduct 1, and a support rod 6 for pressing the extension portions 44 outward is connected between the two extension portions 44, and a waterproof material 7 is provided between the extension portions 44 and the inner wall of the aqueduct 1 to ensure that the lower steel plate 4 and the concrete structure of the aqueduct 1 are tightly connected.

[0032] like Figure 3 , 5 As shown, multiple exhaust pipes 5 are arranged at intervals along the water flow direction, and the exhaust pipes 5 penetrate the upper steel plate 3 and the lower steel plate 4 and are fixedly connected thereto, so as to connect the interior of the aqueduct 1 with the external environment. The top elevation of the exhaust pipe 5 needs to be higher than the top elevation of the upper steel plate 3. The bottom end of the exhaust pipe 5 is flush with the bottom surface of the lower steel plate 4.

[0033] like Figure 6 As shown, the fastening assembly 8 includes a fixing bolt 81 and a fixing nut 82. An upper fixing gasket 83 and a lower fixing gasket 84 are respectively provided on the mounting surfaces of the fastening assembly 8 with the upper steel plate 3 and the lower steel plate 4. The upper fixing gasket 83 and the lower fixing gasket 84 should have a certain degree of impermeability.

[0034] The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments. Those skilled in the art may make some modifications, supplements or use similar methods instead without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.

Claims

1. An aqueduct structure for improving the flow capacity of a large aqueduct, the aqueduct (1) structure comprising a plurality of aqueducts (1) connected along a water flow direction, each of the aqueducts (1) being provided with a plurality of tie rods (2) at intervals along the water flow direction, It is characterized in that Also includes: An upper steel plate (3), the upper steel plate (3) being laid on the top surface of the pull rod (2) along the direction of water flow, and its two side edges parallel to the direction of water flow are closely fitted to the top surface of the aqueduct (1); A lower steel plate (4), the lower steel plate (4) is laid on the bottom surface of the pull rod (2) along the water flow direction and is fixedly connected to the upper steel plate (3) via a fastening assembly (8), and the two side edges of the lower steel plate (4) parallel to the water flow direction are tightly fitted to the inner wall of the aqueduct (1); and a plurality of exhaust pipes (5), the exhaust pipes (5) being arranged at intervals along the water flow direction, the exhaust pipes (5) penetrating the upper steel plate (3) and the lower steel plate (4) and being fixedly connected thereto, for connecting the interior of the aqueduct (1) with the external environment; The upper steel plate (3) is composed of a structural seam upper steel plate (31), an exhaust pipe upper steel plate (32) and a standard upper steel plate (33); the lower steel plate (4) is composed of a structural seam lower steel plate (41), an exhaust pipe lower steel plate (42) and a standard lower steel plate (43); the structural seam upper steel plate (31) is arranged above the structural seam (9) between adjacent aqueducts (1); correspondingly, the structural seam lower steel plate (41) is arranged below the structural seam upper steel plate (31) and is fixedly connected thereto; the exhaust pipe upper steel plate (32) is arranged On the top surface of the adjacent tie rod (2), the exhaust pipe upper steel plate (32) is provided with an opening for the exhaust pipe (5) to pass through, and the exhaust pipe lower steel plate (42) is correspondingly arranged below the exhaust pipe upper steel plate (32) and fixedly connected thereto, and the exhaust pipe lower steel plate (42) is provided with an opening for the exhaust pipe (5) to pass through; the standard upper steel plate (33) is arranged on the top surface of the adjacent tie rod (2), and the standard lower steel plate (43) is correspondingly arranged below the standard upper steel plate (33) and fixedly connected thereto; The two sides of the lower steel plate (4) parallel to the water flow direction extend downward to form an extension portion (44) that can fit with the inner wall of the aqueduct (1), and a support rod (6) is connected between the two extension portions (44) for providing outward compression of the extension portion (44); the contact surface of the upper steel plate (3) and the lower steel plate (4) with the aqueduct (1) is provided with a waterproof material (7); the top elevation of the exhaust pipe (5) needs to be higher than the top elevation of the upper steel plate (3); when the flow rate of the aqueduct is greatly increased, the water level at the aqueduct inlet will be higher than the full water level of the aqueduct. Due to the presence of the upper and lower steel plates and the exhaust pipe, the height of the exhaust pipe can be adjusted according to the water level, turning the aqueduct structure into a "low pressure flow" structure. The exhaust pipe can replenish air to the water flow in real time, thereby reducing the cavitation damage to the aqueduct structure caused by the water flow.

2. The aqueduct structure for improving the flow capacity of a large aqueduct according to claim 1, Features: The fastening assembly (8) comprises a fixing bolt (81) and a fixing nut (82), and an upper fixing gasket (83) and a lower fixing gasket (84) are respectively arranged on the mounting surfaces of the fastening assembly (8) and the upper steel plate (3) and the lower steel plate (4).

3. The aqueduct structure for improving the flow capacity of a large aqueduct according to claim 1, Features: The two side edges of the upper steel plate (3) parallel to the water flow direction are overlapped on the top surface of the aqueduct (1).

4. The aqueduct structure for improving the flow capacity of a large aqueduct according to claim 1, Features: The bottom end of the exhaust pipe (5) is flush with the bottom surface of the lower steel plate (4).

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