Novel concrete dam crest working platform

Abstract

The utility model provides a concrete dam crest working platform, which relates to the technical field of hydroelectric hydraulic engineering and comprises a concrete dam, a dam crest widening platform is arranged on one side of the top of the concrete dam, a plurality of cross beams and longitudinal beams are arranged at the bottom of the dam crest widening platform, and the cross beams are arranged in parallel. One end of the cross beam is connected with the top of the concrete dam, the other end of the cross beam is connected with the tops of the supporting columns, the longitudinal beam is arranged between the supporting columns, the two ends of the longitudinal beam are sequentially connected with the tops of the two adjacent supporting columns, and the bottoms of the supporting columns are arranged on the concrete dam. The width of the dam face can be reduced in the design process of the concrete dam, and the concrete consumption of the dam body is effectively reduced; meanwhile, the weight of the dam crest structure is reduced, and the damage effect caused by the earthquake effect is reduced; in the concrete dam construction and later reconstruction process, the area of the working platform within the dam crest range can be effectively enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower and water conservancy engineering, in particular to a concrete dam top working platform. Background Art

[0002] The crest of a gravity dam serves as a vehicle traffic passage and a place for the arrangement of various equipment, and its width usually needs to meet the actual application requirements. However, in actual applications, the width of the dam crest often cannot meet these requirements. For example, during the construction of the hub, it is necessary to arrange a construction site on the dam crest surface; during operation, it is necessary to increase the width of the dam crest road surface. In addition, due to the requirements of the overall shape of the concrete dam, increasing the width of the dam crest will lead to a significant increase in the amount of concrete filling, thereby reducing the economic efficiency. For completed concrete gravity dam projects, due to the limitations of the existing dam crest traffic conditions and construction sites, later construction and renovation will face unfavorable factors. Therefore, there is an urgent need for a method or device for widening the dam crest working surface while modifying the overall design of the original concrete dam. Utility Model Content

[0003] The utility model provides a concrete dam top working platform, aiming to solve at least one technical problem existing in the prior art mentioned in the background technology.

[0004] The utility model provides the following technical solutions to achieve the above objectives:

[0005] A concrete dam top working platform comprises a concrete dam, wherein a dam top widening platform is arranged on the downstream side of the concrete dam top, a plurality of cross beams and longitudinal beams are arranged at the bottom of the dam top widening platform, the plurality of cross beams are arranged in parallel perpendicular to the dam axis direction, one end of the cross beam is connected to the top of the concrete dam, the other end of the cross beam is connected to the column top of a supporting column, the longitudinal beam is arranged between the supporting columns, the two ends of the longitudinal beam are connected to the tops of two adjacent supporting columns in sequence, and the bottom of the supporting column is arranged on the concrete dam.

[0006] Furthermore, a base is provided on the concrete dam, and the top of the base is connected to the bottom of the support column.

[0007] Furthermore, the cross-sectional area of ​​the longitudinal beam is gradually increased from the middle to both ends.

[0008] Furthermore, a connecting rod is arranged inside the crossbeam, and the connecting rod extends from both ends of the crossbeam.

[0009] Furthermore, a connecting rod is arranged inside the longitudinal beam, and the connecting rod extends from both ends of the longitudinal beam.

[0010] Furthermore, a groove is arranged on the center line of the top of the support column, and the cross-sectional dimensions of the groove match the cross-sectional dimensions of the cross beam and the longitudinal beam. An L-shaped groove is arranged on the top of the support column located at the corner of the dam top widening platform, and a straight-line groove is arranged on the top of the support column located in the middle of the dam top widening platform.

[0011] Furthermore, a plurality of platform protection railings are provided on the edge portion of the top surface of the dam top widening platform.

[0012] Furthermore, the longitudinal beams are arranged in at least one layer from the top of the supporting column to the bottom.

[0013] Furthermore, the dam top widening platform, cross beams and longitudinal beams are made of reinforced concrete.

[0014] Beneficial Effects

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model can reduce the dam surface width design during the concrete dam design process, effectively reducing the amount of dam body concrete.

[0017] 2. The utility model is conducive to earthquake-resistant and stable design; it reduces the weight of the top structure of the dam crest and reduces the destructive effect caused by earthquakes.

[0018] 3. The utility model can effectively expand the working platform area within the dam top range during the construction and subsequent reconstruction of the concrete dam.

[0019] 4. The utility model has moderate cost, convenient construction and high application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0021] Figure 1 It is a schematic diagram of the structural section of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the longitudinal beam of the utility model;

[0024] Figure 4 Another structural schematic diagram of the longitudinal beam of the utility model;

[0025] Figure 5 This is a schematic diagram of the connection state of the support column, cross beam and longitudinal beam structure of the utility model;

[0026] Figure numerals: 1-concrete dam; 2-widened platform on dam top; 3-support column; 4-cross beam; 5-longitudinal beam; 5A-arc longitudinal beam; 5B-heterotropic longitudinal beam; 6-platform guardrail; 7-base. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0028] It should be noted that in the present invention: the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or apparatuses; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These The terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation; the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; the terms "install", "set", "provided with", "connected", "connected", "sleeved", etc. should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. In addition, some terms can be used to express other meanings in addition to indicating orientation or positional relationships. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For ordinary technicians in this field, the specific meanings of these terms in the utility model can be understood according to specific circumstances.

[0029] Embodiment. A concrete dam top working platform, the structure of which is referenced Figure 1-5, including a concrete dam 1, a dam top widening platform 2 is arranged on one side of the top of the concrete dam 1, a plurality of cross beams 4 and longitudinal beams 5 are arranged at the bottom of the dam top widening platform 2, the plurality of cross beams 4 are arranged in parallel, one end of the cross beam 4 is connected to the top of the concrete dam 1, the other end of the cross beam 4 is connected to the top of the support column 3, the longitudinal beam 5 is arranged between the support columns 3, the two ends of the longitudinal beam 5 are connected to the tops of two adjacent support columns 3 in sequence, and the bottom of the support column 3 is arranged on the concrete dam 1.

[0030] The concrete dam 1 is provided with a base 7, the top of which is connected to the bottom of the support column 3. The base 7 can improve the bearing capacity of the top working platform of the concrete dam, and the base 7 can be cast together with the concrete dam 1 when casting.

[0031] The cross-sectional area of ​​the longitudinal beam 5 is gradually increased from the middle to the two ends. The mechanical properties of the longitudinal beam 5 can be improved by gradually increasing the cross-sectional area of ​​the longitudinal beam 5.

[0032] The cross beam 4 is provided with a connecting rod inside, and the connecting rod extends from both ends of the cross beam 4. The longitudinal beam 5 is provided with a connecting rod inside, and the connecting rod extends from both ends of the longitudinal beam 5. The connecting rod is provided to facilitate strengthening the connection strength between the concrete dam 1, the support column 3, the cross beam 4 and the longitudinal beam 5, thereby ensuring the overall rigidity of the dam top working platform of the concrete dam.

[0033] A groove is provided on the center line of the top of the support column 3, and the cross-sectional dimensions of the groove match the cross-sectional dimensions of the cross beam 4 and the longitudinal beam 5. An L-shaped groove is provided on the top of the support column 3 located at the corner of the dam top widening platform 2, and a straight groove is provided on the top of the support column 3 located in the middle of the dam top widening platform 2. The groove is provided to facilitate the installation of the cross beam 4 and the longitudinal beam 5.

[0034] The edge portion of the top surface of the dam top widening platform 2 is provided with a plurality of platform guardrails 6. The platform guardrails 6 are provided to ensure the safety of personnel and materials.

[0035] The longitudinal beams 5 are arranged in at least one layer from the top of the support column 3 downward. When the connection strength is insufficient, multiple rows of longitudinal beams 5 can be arranged to improve the connection strength.

[0036] The material of the dam top widening platform 2, the cross beam 4 and the longitudinal beam 5 is reinforced concrete. The top widening platform 2, the cross beam 4 and the longitudinal beam 5 are all made of precast concrete, which is convenient for quickly installing the working platform on the dam top after the concrete dam is completed; the support column 3 is cast at the same time as the concrete dam, which can improve the connection strength of the support column 3.

[0037] Working principle and use method of the utility model: The concrete dam top working platform is applied to the concrete dam. When the concrete dam is completed, it is widened at the required position. In order to facilitate the construction of the working platform, all structures are made of reinforced concrete. First, a base 7 is set. The base 7 can be cast together with the concrete dam 1 when it is cast. After the construction of the concrete dam 1 is completed, the concrete dam 1 can be opened and reinforced with concrete to cast the base 7. The steel bar structure arranged in the base 7 can improve the connection strength with the concrete dam 1; then the support column 3 is installed on the base 7, and the cross beam 4 and the longitudinal beam 5 are installed on the top of the support column 3. The cross beam 4 The grooves at the top of the columns corresponding to the longitudinal beam 5 are placed therein, and the connecting rods at both ends of the cross beam 4 and the longitudinal beam 5 are overlapped with each other. They can be fixed with steel wire and concrete is poured in the grooves at the top of the columns, so that the support columns 3, the cross beam 4 and the longitudinal beam 5 are fixedly connected to form a whole, thereby improving the overall rigidity, and a dam top widening platform 2 is installed on the support columns 3, the cross beam 4 and the longitudinal beam 5. The dam top widening platform 2 adopts a reinforced concrete slab type, and the steel bars arranged in the dam top widening platform 2 are respectively anchored into the concrete dam 1, the support columns 3 and the longitudinal beam 5 to improve the connection strength; finally, according to actual work needs, a platform guardrail 6 is installed on the edge of the dam top widening platform 2 to ensure the safety of personnel and materials.

[0038] Obviously, the above is only a part of the embodiments of the utility model, not all of the embodiments. The above embodiments are not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any combination, modification, equivalent replacement, improvement and all other embodiments that can be made by ordinary technicians in the field within the spirit and principle of the utility model should be within the protection scope of the utility model.

Claims

1. A new type of concrete dam crest working platform, characterized by: The invention comprises a concrete dam (1), wherein a dam top widening platform (2) is arranged at the downstream side of the top of the concrete dam (1), and a plurality of cross beams (4) and longitudinal beams (5) are arranged at the bottom of the dam top widening platform (2). The plurality of cross beams (4) are arranged in parallel and perpendicular to the dam axis direction, one end of the cross beam (4) is connected to the top of the concrete dam (1), and the other end of the cross beam (4) is connected to the top of a support column (3). The longitudinal beam (5) is arranged between the support columns (3), and the two ends of the longitudinal beam (5) are connected to the tops of two adjacent support columns (3) in sequence. The bottom of the support column (3) is arranged on the concrete dam (1).

2. A new type of concrete dam top working platform according to claim 1, characterized in that: The concrete dam (1) is provided with a base (7), and the top of the base (7) is connected to the bottom of the support column (3).

3. A new type of concrete dam top working platform according to claim 1, characterized in that: The cross-sectional area of ​​the longitudinal beam (5) gradually increases from the middle to both ends.

4. A new type of concrete dam top working platform according to claim 1, characterized in that: A connecting rod is arranged inside the cross beam (4), and the connecting rod extends from both ends of the cross beam (4).

5. A new type of concrete dam top working platform according to claim 1, characterized in that: A connecting rod is arranged inside the longitudinal beam (5), and the connecting rod extends from both ends of the longitudinal beam (5).

6. A new type of concrete dam top working platform according to claim 1, characterized in that: A groove is provided on the center line of the top of the support column (3), and the cross-sectional dimensions of the groove match the cross-sectional dimensions of the cross beam (4) and the longitudinal beam (5). An L-shaped groove is provided on the top of the support column (3) located at the corner of the dam top widening platform (2), and a straight groove is provided on the top of the support column (3) located in the middle of the dam top widening platform (2).

7. A new type of concrete dam top working platform according to claim 1, characterized in that: A plurality of platform protection railings (6) are provided at the edge portion of the top surface of the dam top widening platform (2).

8. A new type of concrete dam top working platform according to claim 1, characterized in that: The longitudinal beams (5) are arranged in at least one layer from the top of the support column (3) downward.

9. A new type of concrete dam top working platform according to claim 1, characterized in that: The dam top widening platform (2), the cross beam (4) and the longitudinal beam (5) are made of reinforced concrete.

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