Concrete gravity dam overflow surface construction platform

Abstract

The utility model provides a concrete gravity dam overflow surface construction platform belongs to construction platform technical field, include: construction platform and steel ladder structure. The utility model discloses, through the longitudinal design construction platform on the overflow surface of concrete gravity dam, supplies the walking of construction personnel and small -size mechanical equipment, thereby avoids the cumbersome procedure of personnel passing through dam top, and designs steel ladder structure, and the personnel walk on the overflow surface of concrete gravity dam is convenient.

Description

Technical Field

[0001] This utility model relates to the field of construction platform technology, specifically a construction platform for the overflow surface of a concrete gravity dam. Background Technology

[0002] After years of operation, concrete gravity dams often suffer from severe corrosion of the metal structure, widespread cracks, and obvious defects in the overall appearance of the concrete, requiring reinforcement and safety measures.

[0003] During the reinforcement and upgrading process, concrete gravity dam overflow surfaces are often accessed via soft ladders or rotating cage ladders on the weir crest. When using soft ladders, the long and steep slope of the overflow surface increases the difficulty of operation and control, severely restricts access space, and makes it inconvenient for personnel to ascend and descend. When using rotating cage ladders on the weir crest, the single access route and limited width of the dam crest, coupled with the high-intensity work and numerous construction machines, necessitates advance communication and coordination for personnel access, resulting in a large workload, hindering construction progress, and posing significant safety risks. Therefore, this utility model provides a construction platform for the overflow surface of a concrete gravity dam. Utility Model Content

[0004] To address the inconvenience of constructing the overflow surface of a concrete gravity dam, this utility model provides a construction platform for the overflow surface of a concrete gravity dam.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A construction platform for the spillway surface of a concrete gravity dam includes:

[0007] A construction platform installed on the overflow surface of a concrete gravity dam and horizontally positioned below the bottom of the gate pier.

[0008] A steel ladder structure is set longitudinally along the overflow surface of the concrete gravity dam, and the steel ladder structure is interspersed with the construction platform.

[0009] As a further description of the above technical solution:

[0010] The steel ladder structure includes an upper steel ladder located above the construction platform and a lower steel ladder located below the construction platform.

[0011] As a further description of the above technical solution:

[0012] The steel ladder structure comprises several platform sections, each platform section including:

[0013] The main body of the steel ladder includes an inclined frame and a water platform fixed to the top of the inclined frame. The bottom end of the inclined frame and the end of the water platform are both fixed to the overflow surface of the concrete gravity dam by an anchoring system.

[0014] The first guardrail is fixedly installed on both sides of the main body of the steel ladder;

[0015] The main support system has its bottom end fixedly connected to the overflow surface of the concrete gravity dam via an anchoring system, and its top end fixedly connected to the top end of the inclined frame.

[0016] As a further description of the above technical solution:

[0017] The inclined frame is a staircase structure.

[0018] As a further description of the above technical solution:

[0019] An auxiliary support system is fixedly installed at the bottom of the inclined frame, and the bottom end of the auxiliary support system is fixedly connected to the overflow surface of the concrete gravity dam through an anchoring system.

[0020] As a further description of the above technical solution:

[0021] The anchoring system includes a steel plate, which is fixedly connected to the overflow surface of the concrete gravity dam by expansion bolts.

[0022] As a further description of the above technical solution:

[0023] The construction platform includes:

[0024] A support structure, the bottom end of which is fixedly connected to the overflow surface of a concrete gravity dam via an anchoring system;

[0025] Scaffold boards, which are fixedly installed on the top of the supporting structure;

[0026] The second guardrail is fixedly connected to the supporting structure and is located on both sides of the scaffold board.

[0027] As a further description of the above technical solution:

[0028] The support structure includes:

[0029] A horizontal frame, one side of which is fixedly connected to the overflow surface of a concrete gravity dam;

[0030] The frame support system includes a first vertical frame and a second vertical frame fixedly connected to the bottom of the horizontal frame. A horizontal connecting frame is fixedly connected between the first vertical frame and the second vertical frame. A height adjustment component is fixedly connected at the connection between the horizontal connecting frame and the second vertical frame. The bottom end of the first vertical frame is fixedly connected to the overflow surface of the concrete gravity dam.

[0031] The bottom end of the third vertical frame is fixedly connected to the overflow surface of the concrete gravity dam, and the top end of the third vertical frame is fixedly connected to the height adjustment component.

[0032] As a further description of the above technical solution:

[0033] The height adjustment component includes: a housing component, which is fixedly connected to the horizontal connecting frame and the second vertical frame. A threaded fitting is fixedly connected to the inner side of the housing component. A supporting threaded rod is threadedly connected to the inner side of the threaded fitting. A sleeve is rotatably connected to the bottom end of the supporting threaded rod. The bottom end of the sleeve is fixedly connected to the top end of the third vertical frame. A notch is provided on the side of the housing component.

[0034] The beneficial effects of this utility model are:

[0035] This utility model proposes to design a construction platform longitudinally on the overflow surface of a concrete gravity dam, allowing construction workers and small machinery to walk on it, thereby avoiding the cumbersome procedure of personnel crossing the top of the dam. A steel ladder structure is also designed to facilitate personnel walking on the overflow surface of the concrete gravity dam. Attached Figure Description

[0036] The following figures are shown to more clearly illustrate a construction platform for the spillway of a concrete gravity dam;

[0037] Figure 1 This is a front view of the present invention;

[0038] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0039] Figure 3 This is a schematic diagram of the construction platform of this utility model;

[0040] Figure 4 This is a schematic diagram of the main body of the steel ladder of this utility model;

[0041] Figure 5 for Figure 3 Enlarged view of a portion of point A in the middle;

[0042] Figure 6 This is a schematic diagram of the support structure of the construction platform of this utility model;

[0043] Figure 7 for Figure 6 A magnified view of section B in the middle.

[0044] The labels in the attached diagram;

[0045] 1. Overflow surface of concrete gravity dam; 2. Gate pier; 3. Construction platform; 301. Support structure; 301a. Horizontal frame; 301b. Frame support system; 301b1. First vertical frame; 301b2. Horizontal connecting frame; 301b3. Second vertical frame; 301b4. Height adjustment component; 301c. Third vertical frame; 302. Scaffold board; 303. Second guardrail; 4. Steel ladder structure; 4a. Upper steel ladder; 4b. Lower steel ladder; 401. Main body of steel ladder; 401a. Inclined frame; 401b. Water platform; 402. First guardrail; 403. Main support system; 404. Auxiliary support system; 5. Auxiliary platform; 6. Anchoring system; 601. Steel plate; 602. Expansion bolt; 7. Shell component; 8. Threaded assembly; 9. Support threaded rod; 10. Sleeve; 11. Notch. Detailed Implementation

[0046] Please refer to the attached document. Figure 1 - Figure 7 This document illustrates a concrete gravity dam overflow surface construction platform provided in an embodiment of this application, used for the repair construction of the overflow surface of a concrete gravity dam. Specifically, it includes: a construction platform 3 and a steel ladder structure 4.

[0047] Construction platform 3 is installed laterally on the overflow surface 1 of the concrete gravity dam, and is located below the bottom of the gate pier 2. It provides a platform for personnel and small machinery to walk on and can also provide a platform for placing some construction materials. Steel ladder structure 4 is set longitudinally along the overflow surface 1 of the concrete gravity dam. Generally, multiple steel ladder structures 4 are set and located between two adjacent gate piers 2. The steel ladder structure 4 and construction platform 3 are staggered, allowing construction personnel to work along the overflow surface 1 of the concrete gravity dam. Auxiliary platforms 5 similar to construction platform 3 can also be designed on the side of steel ladder structure 4. Auxiliary platforms 5 are mainly used for stacking building materials.

[0048] In one embodiment, the steel ladder structure 4 includes an upper steel ladder 4a located above the construction platform 3 and a lower steel ladder 4b located below the construction platform 3. The construction platform 3 is generally designed to be higher than the lowest point of the overflow surface 1 of the concrete gravity dam by the height of one set of steel ladder structures 4.

[0049] In one embodiment, the steel ladder structure 4 includes several platform sections, each platform section including: a steel ladder body 401, a first guardrail 402 and a main support system 403.

[0050] The main body of the steel ladder 401 includes an inclined frame 401a and a water platform 401b fixed to the top of the inclined frame 401a. The inclined frame 401a and the water platform 401b are welded and fixed together. The bottom end of the inclined frame 401a and the end of the water platform 401b are fixed to the overflow surface 1 of the concrete gravity dam through the anchoring system 6. The first guardrail 402 is fixedly installed on both sides of the main body of the steel ladder 401 and serves as a protective barrier. The bottom end of the main support system 403 is fixedly connected to the overflow surface 1 of the concrete gravity dam through the anchoring system 6. The top end of the main support system 403 is fixedly connected to the top end of the inclined frame 401a. The main support system 403 supports the main body of the steel ladder 401 and ensures the structural stability of the main body of the steel ladder 401.

[0051] The upper and lower ends of the steel ladder body 401 are fixed to the overflow surface 1 of the concrete gravity dam, and the main support system 403 is designed for auxiliary support, resulting in a stable structure that is easy to assemble.

[0052] The inclined frame 401a has a staircase structure, which makes it easy for users to walk on the inclined frame 401a.

[0053] In one embodiment, an auxiliary support system 404 is fixedly provided at the bottom of the tilting frame 401a. The bottom end of the auxiliary support system 404 is fixedly connected to the overflow surface 1 of the concrete gravity dam through the anchoring system 6. The auxiliary support system 404 is used to further increase the strength of the tilting frame 401a. Especially when the tilting frame 401a is long, multiple auxiliary support systems 404 can be designed according to the requirements.

[0054] In one embodiment, the anchoring system 6 includes a steel plate 601, which is fixedly connected to the overflow surface 1 of the concrete gravity dam by expansion bolts 602. The steel plate 601 is welded to the structure to be installed. The steel plate 601 has multiple mounting holes, and a set of expansion bolts 602 is used to fix the steel plate 601 to the overflow surface 1 of the concrete gravity dam.

[0055] In one embodiment, the construction platform 3 includes: a support structure 301, scaffold boards 302, and a second guardrail 303.

[0056] The bottom end of the support structure 301 is fixedly connected to the overflow surface 1 of the concrete gravity dam through the anchoring system 6. The scaffold boards 302 are fixedly installed on the top of the support structure 301. Multiple scaffold boards 302 are set according to the length of the construction platform 3. They are fixed to the support structure 301 with bolts. The second guardrail 303 is fixedly connected to the support structure 301 and is located on both sides of the scaffold boards 302. The second guardrail 303 plays a role in safety protection.

[0057] In one embodiment, the support structure 301 includes: a horizontal frame 301a, a frame support system 301b, and a third vertical frame 301c.

[0058] One side of the horizontal frame 301a is fixedly connected to the overflow surface 1 of the concrete gravity dam. The frame support system 301b includes a first vertical frame 301b1 and a second vertical frame 301b3 fixedly connected to the bottom of the horizontal frame 301a. A horizontal connecting frame 301b2 is fixedly connected between the first vertical frame 301b1 and the second vertical frame 301b3. A height adjustment component 301b4 is fixedly connected at the connection between the horizontal connecting frame 301b2 and the second vertical frame 301b3. The bottom end of the first vertical frame 301b1 is fixedly connected to the overflow surface 1 of the concrete gravity dam. The bottom end of the third vertical frame 301c is fixedly connected to the overflow surface 1 of the concrete gravity dam. The top end of the third vertical frame 301c is fixedly connected to the height adjustment component 301b4.

[0059] Because the plane height of the overflow surface 1 of the concrete gravity dam is inconsistent, the third vertical frame 301c cannot support the frame support system 301b well. By installing the designed height adjustment component 301b4 with the third vertical frame 301c, the process of cutting the third vertical frame 301c can be reduced, thereby improving the efficiency of the construction platform 3.

[0060] In one embodiment, the height adjustment component 301b4 includes: a housing component 7, which is fixedly connected to the horizontal connecting frame 301b2 and the second vertical frame 301b3. A threaded fitting 8 is fixedly connected to the inner side of the housing component 7. A support threaded rod 9 is threadedly connected to the inner side of the threaded fitting 8. A sleeve 10 is rotatably connected to the bottom end of the support threaded rod 9. The bottom end of the sleeve 10 is fixedly connected to the top end of the third vertical frame 301c. A notch 11 is provided on the side of the housing component 7. The support threaded rod 9 is rotated by manipulating the notch 11. The support threaded rod 9 is threadedly engaged with the threaded fitting 8, thereby causing the support threaded rod 9 and the sleeve 10 to move downward together.

[0061] The top of the third vertical bracket 301c is inserted into the housing 7, and then the bottom of the third vertical bracket 301c is fixed. Finally, the support threaded rod 9 is rotated, and the support threaded rod 9 and the sleeve 10 move downward together. The sleeve 10 moves downward and engages with the top of the third vertical bracket 301c, thereby achieving quick installation of the third vertical bracket 301c.

[0062] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0063] It should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A construction platform for the overflow surface of a concrete gravity dam, characterized in that, include: A construction platform (3) is installed on the overflow surface (1) of the concrete gravity dam and is horizontally set below the bottom of the gate pier (2); A steel ladder structure (4) is longitudinally arranged along the overflow surface (1) of the concrete gravity dam, and the steel ladder structure (4) is intersected with the construction platform (3).

2. The construction platform for the overflow surface of a concrete gravity dam according to claim 1, characterized in that, The steel ladder structure (4) includes an upper steel ladder (4a) located above the construction platform (3) and a lower steel ladder (4b) located below the construction platform (3).

3. The construction platform for the overflow surface of a concrete gravity dam according to claim 1, characterized in that: The steel ladder structure (4) includes several platform sections, each platform section comprising: The main body of the steel ladder (401) includes an inclined frame (401a) and a water platform (401b) fixed at the top of the inclined frame (401a). The bottom end of the inclined frame (401a) and the end of the water platform (401b) are both fixed to the overflow surface (1) of the concrete gravity dam by an anchoring system (6). The first guardrail (402) is fixedly installed on both sides of the steel ladder body (401); The main support system (403) is fixedly connected at its bottom end to the overflow surface (1) of the concrete gravity dam via an anchoring system (6), and at its top end to the top end of the inclined frame (401a).

4. The construction platform for the overflow surface of a concrete gravity dam according to claim 3, characterized in that: The inclined frame (401a) is a staircase structure.

5. A construction platform for the overflow surface of a concrete gravity dam according to claim 3, characterized in that: An auxiliary support system (404) is fixedly installed at the bottom of the inclined frame (401a), and the bottom end of the auxiliary support system (404) is fixedly connected to the overflow surface (1) of the concrete gravity dam through an anchoring system (6).

6. A construction platform for the overflow surface of a concrete gravity dam according to claim 3, characterized in that, The anchoring system (6) includes a steel plate (601), which is fixedly connected to the overflow surface (1) of the concrete gravity dam by expansion bolts (602).

7. A construction platform for the overflow surface of a concrete gravity dam according to claim 1, characterized in that, The construction platform (3) includes: The bottom end of the support structure (301) is fixedly connected to the overflow surface (1) of the concrete gravity dam by means of the anchoring system (6); Scaffold board (302), the scaffold board (302) is fixedly installed on the top of the support structure (301); The second guardrail (303) is fixedly connected to the support structure (301) and is located on both sides of the scaffold board (302).

8. A construction platform for the overflow surface of a concrete gravity dam according to claim 7, characterized in that, The support structure (301) includes: A horizontal frame (301a) is fixedly connected to the overflow surface (1) of a concrete gravity dam on one side. The frame support system (301b) includes a first vertical frame (301b1) and a second vertical frame (301b3) fixedly connected to the bottom of the horizontal frame (301a). A horizontal connecting frame (301b2) is fixedly connected between the first vertical frame (301b1) and the second vertical frame (301b3). A height adjustment component (301b4) is fixedly connected at the connection between the horizontal connecting frame (301b2) and the second vertical frame (301b3). The bottom end of the first vertical frame (301b1) is fixedly connected to the overflow surface (1) of the concrete gravity dam. The third vertical frame (301c) is fixedly connected at its bottom end to the overflow surface (1) of the concrete gravity dam, and at its top end to the height adjustment component (301b4).

9. A construction platform for the overflow surface of a concrete gravity dam according to claim 8, characterized in that, The height adjustment component (301b4) includes: a housing component (7), which is fixedly connected to the horizontal connecting frame (301b2) and the second vertical frame (301b3). A threaded fitting (8) is fixedly connected to the inner side of the housing component (7). A supporting threaded rod (9) is threadedly connected to the inner side of the threaded fitting (8). A sleeve (10) is rotatably connected to the bottom end of the supporting threaded rod (9). The bottom end of the sleeve (10) is fixedly connected to the top end of the third vertical frame (301c). A notch (11) is provided on the side of the housing component (7).

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