Cross beam type raft type sluice bottom plate structure

Abstract

The utility model belongs to the technical field of sluice bottom plates, and provides a cross beam type raft sluice bottom plate structure which comprises cross beams, longitudinal beams, pile foundations, reinforced concrete plates, plain concrete cushion layers and gravel cushion layers, the cross beams are arranged in parallel at equal intervals, and the cross beams are arranged below pier walls; the longitudinal beams are arranged in parallel at equal intervals and are perpendicular to the cross beams, and concrete plate grids are formed between the cross beams and the longitudinal beams; the pile foundations are arranged at the intersections of the longitudinal beams and the cross beams and extend downwards; the reinforced concrete plates are arranged in the concrete plate grids; the upper surfaces of the reinforced concrete plates, the cross beams and the longitudinal beams are positioned on the same plane; the plain concrete cushion layer is arranged below the reinforced concrete plate; and the gravel cushion layer is arranged below the plain concrete cushion layer. According to the cross beam type raft water gate bottom plate structure, the cross beams and the longitudinal beams are evenly and reasonably arranged, the overall rigidity in the downstream water flow direction and the perpendicular water flow direction is high, and the problem that temperature cracks are generated due to large-size concrete high hydration heat pouring caused by a traditional heavy thick bottom plate is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sluice bottom plates, in particular to a well-shaped beam type raft sluice bottom plate structure. Background Art

[0002] The bottom plate of the sluice is the base plate of the sluice chamber. It bears the entire weight of the upper structure of the sluice chamber, vertical and horizontal water pressure and other loads, and transmits them evenly to the foundation; it relies on the friction between the foundation to resist the sliding effect of horizontal water pressure and other horizontal thrusts to maintain the stability of the sluice chamber; at the same time, due to the water flow and the seepage effect of the foundation, it should also have the functions of anti-scouring and anti-seepage. There are three main forms: wide-top weir type, low practical weir type and reverse arch type. The former is a flat bottom plate, suitable for low water head conditions, with stable discharge, capable of discharging sand, dirt, floating objects and navigation; the middle one is a curved weir on a flat bottom plate, suitable for higher water head, large flow coefficient, and reduced gate height; the latter has an inverted arch bottom plate, good mechanical properties, and saves building materials, but is greatly affected by foundation deformation and temperature changes, and is not widely used. It is mostly built of concrete and reinforced concrete, and small ones can be built with mortar masonry.

[0003] Currently, flat-bottomed sluice base foundations are widely used, which are heavy, thick and have complex stresses. Temperature crack reinforcements must be added, which wastes materials. In addition, attention must be paid to the problem of temperature cracks caused by pouring large volumes of concrete. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a cross-beam raft-type sluice bottom plate structure to solve the problem that the current flat-bottom sluice bottom plate foundation is bulky and attention should be paid to the temperature cracks caused by the pouring of large-volume concrete.

[0005] The utility model provides a crisscross beam type raft type sluice bottom plate structure, comprising:

[0006] Cross beams, the cross beams are arranged in parallel and at equal intervals, and the cross beams are arranged under the pier wall;

[0007] Longitudinal beams, the longitudinal beams are arranged in parallel and at equal intervals, the longitudinal beams and the transverse beams are perpendicular to each other, and a concrete slab grid is formed between the transverse beams and the longitudinal beams;

[0008] A pile foundation is arranged at the intersection of the longitudinal beam and the transverse beam and extends downward;

[0009] A reinforced concrete slab is arranged in the concrete slab grid, and the upper surfaces of the reinforced concrete slab, the cross beam and the longitudinal beam are in the same plane;

[0010] A plain concrete cushion layer is arranged under the reinforced concrete slab;

[0011] The sand and gravel cushion layer is arranged under the plain concrete cushion layer.

[0012] It can be seen from the above technical scheme that the cross-beam raft-type sluice bottom plate structure provided by the utility model has strong overall rigidity in the direction along and perpendicular to the water flow through evenly and reasonably arranged cross beams and longitudinal beams, thereby reducing the problem of temperature cracks caused by high-hydration hot pouring of large-volume concrete brought about by traditional bulky and thick bottom plates.

[0013] Optionally, a connecting beam is further provided between adjacent cross beams, and both ends of the connecting beam are respectively connected to the cross beams, and the reinforced concrete slab is provided between the connecting beam, the cross beams and the longitudinal beams.

[0014] Optionally, a support beam is further provided between the cross beam and the longitudinal beam, and the support beam is staggeredly arranged in an X shape in the reinforced concrete slab, and both ends of the support beam are respectively connected to the cross beam.

[0015] Optionally, the cross beam and the longitudinal beam have the same thickness, and the thickness of the cross beam and the longitudinal beam are both greater than the thickness of the reinforced concrete slab.

[0016] Optionally, the support beam is a steel beam or a reinforced concrete beam.

[0017] By adopting the above technical solution, this application has the following technical effects:

[0018] The sluice bottom plate provided by the utility model has a strong overall rigidity in the direction along and perpendicular to the water flow due to evenly and reasonably arranged cross beams and longitudinal beams, thereby reducing the problem of temperature cracks caused by high-splash hot pouring of large-volume concrete brought about by traditional bulky and thick bottom plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0020] Figure 1 A schematic diagram of a well-shaped beam-type valve plate-type water gate bottom plate structure provided in an embodiment of the utility model;

[0021] Figure 2 Another schematic diagram of a cross-beam type valve plate type water gate bottom plate structure provided in an embodiment of the utility model.

[0022] Reference numerals:

[0023] 1- horizontal beam; 2- longitudinal beam; 3- pile foundation; 4- reinforced concrete slab; 5- plain concrete cushion layer; 6- sand and gravel cushion layer; 7- connecting beam; 8- supporting beam. DETAILED DESCRIPTION

[0024] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] like Figure 1 As shown, the present embodiment provides a crisscross beam type valve plate type water gate bottom plate structure, comprising a cross beam 1, a longitudinal beam 2, a pile foundation 3, a reinforced concrete slab 4, a plain concrete cushion layer 5 and a gravel cushion layer 6, wherein the cross beam 1 is arranged in parallel and at equal intervals, and the cross beam 1 is arranged under the pier wall; the longitudinal beams 2 are arranged in parallel and at equal intervals, the longitudinal beams 2 and the cross beam 1 are perpendicular to each other, and a concrete slab grid is formed between the cross beam 1 and the longitudinal beam 2; the pile foundation 3 is arranged at the intersection of the longitudinal beam 2 and the cross beam 1 and extends downward; the reinforced concrete slab 4 is arranged in the concrete slab grid, and the upper surfaces of the reinforced concrete slab 4, the cross beam 1 and the longitudinal beam 2 are in the same plane; the plain concrete cushion layer 5 is arranged under the reinforced concrete slab 4; the gravel cushion layer 6 is arranged under the plain concrete cushion layer 5.

[0029] This embodiment has a relatively strong overall rigidity in the direction along and perpendicular to the water flow through the reasonably arranged crossbeam 1 and longitudinal beam 2, which reduces the problem of temperature cracks caused by hot pouring of large-volume concrete with high splash caused by the traditional heavy and thick bottom plate. The same-grade plain concrete cushion layer 5 and sand and gravel cushion layer 6 are used as bottom protection to fill the lower surface of the reinforced concrete slab 4. At the same time, in order to arrange a structure with sufficient rigidity under the pier wall, the crossbeam 1 is set under the pier wall, which is equivalent to a linear uniformly distributed load falling on the beam according to the inverted beam analysis. Both the crossbeam 1 and the longitudinal beam 2 are made of steel bars.

[0030] In a possible embodiment, a connecting beam 7 is further provided between adjacent cross beams 1 , both ends of the connecting beam 7 are respectively connected to the cross beam 1 , and the reinforced concrete slab 4 is provided between the connecting beam 7 , the cross beam 1 and the longitudinal beam 2 .

[0031] In one possible embodiment, Figure 2 As shown, a support beam 8 is further arranged between the cross beam 1 and the longitudinal beam 2. The support beam 8 is arranged in an X-shape and staggered in the reinforced concrete slab 4. Both ends of the support beam 8 are connected to the cross beam 1 respectively.

[0032] Specifically, the connecting beam 7 is arranged in the stress concentration area. For example, if a water pump is set in the corresponding area, the corresponding concrete slab grid bottom should also be provided with a support beam 8 or a connecting beam 7. For the upper load transfer, the bottom plate adopts a consistent layout to strengthen the structural strength. The X-shaped support beam 8 is provided in the reinforced concrete slab 4 to increase the overall rigidity of the plane and improve the structural strength.

[0033] Optionally, the cross beam 1 and the longitudinal beam 2 have the same thickness, and the thickness of the cross beam 1 and the longitudinal beam 2 are both greater than the thickness of the reinforced concrete slab 4. The cross beam 1 and the longitudinal beam 2 have the same thickness for ease of construction and standard casting of the bottom protection.

[0034] Specifically, according to the general underwater durability requirements, the well-beam raft type sluice bottom plate structure is arranged according to the following dimensions: the spacing of the cross beams 1, i.e. the net distance l of the holes, is 5m, the thickness of the reinforced concrete slab 4 is at least 500mm, the cross beams 1 and longitudinal beams 2 are 500*1000mm, and the cross-sectional dimensions of the pile foundation 3 are 500*500mm.

[0035] Optionally, the support beam 8 is a steel beam or a reinforced concrete beam. The support beam 8 can be constructed by pre-reserving steel embedded parts on the side of the cross beam 1, then welding or bolting them, and finally casting the entire support beam into the reinforced concrete slab 4.

[0036] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A sluice gate bottom plate structure with a raft structure, characterized in that: include: Cross beams, the cross beams are arranged in parallel and at equal intervals, and the cross beams are arranged under the pier wall; Longitudinal beams, the longitudinal beams are arranged in parallel and at equal intervals, the longitudinal beams and the transverse beams are perpendicular to each other, and a concrete slab grid is formed between the transverse beams and the longitudinal beams; A pile foundation is arranged at the intersection of the longitudinal beam and the transverse beam and extends downward; A reinforced concrete slab is arranged in the concrete slab grid, and the upper surfaces of the reinforced concrete slab, the cross beam and the longitudinal beam are in the same plane; A plain concrete cushion layer is arranged under the reinforced concrete slab; The sand and gravel cushion layer is arranged under the plain concrete cushion layer.

2. The cross-beam raft type sluice bottom plate structure according to claim 1 is characterized in that: A connecting beam is further arranged between adjacent cross beams, and both ends of the connecting beam are respectively connected to the cross beams, and the reinforced concrete slab is arranged between the connecting beam, the cross beam and the longitudinal beam.

3. The cross-beam raft type sluice bottom plate structure according to claim 2 is characterized in that: A support beam is also arranged between the cross beam and the longitudinal beam. The support beam is arranged in an X-shape and staggered in the reinforced concrete slab. Both ends of the support beam are respectively connected to the cross beam.

4. The cross-beam raft type sluice bottom plate structure according to claim 2 is characterized in that: The thickness of the cross beam and the longitudinal beam are the same, and the thickness of the cross beam and the longitudinal beam are both greater than the thickness of the reinforced concrete slab.

5. The cross-beam raft type sluice bottom plate structure according to claim 3 is characterized in that: The supporting beam is a steel beam or a reinforced concrete beam.

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