Dam panel crack control structure based on induced crack structure

Abstract

The utility model discloses a dam panel crack control structure based on an induced joint structure, and relates to the technical field of dam panel construction. The number of the induction areas is two, in the plane direction of the plain concrete panel, the two induction areas are arranged in the two diagonal directions of the plain concrete panel respectively, and in the vertical direction of the plain concrete panel, the two induction areas vertically extend to the bottom side of the plain concrete panel from the top side of the plain concrete panel; the induction sheets are vertically arranged in the induction area at intervals and used for cutting off connection of concrete on the two sides of the induction area; the water stop piece is arranged in the induction area and used for preventing water flow from permeating into the dam body; and the polyurea coating is arranged on the top surface of the plain concrete panel, is arranged along the length direction of the induction area, and is coated on the top of the induction area. By the adoption of the technical scheme, generation and development of cracks in the plain concrete panel can be controlled, the water seepage prevention performance of the plain concrete panel is improved, repairing is not needed, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dam panel construction, in particular to a dam panel crack control structure based on an induced seam structure. Background Art

[0002] Most of my country's reservoirs were built between the 1950s and 1970s. Most of the dams in the reservoirs are earth-rock dams, which generally have inherent defects such as uneven building materials and poor anti-interference ability. In addition, due to the limitations of the technical level and economic conditions at the time, dams generally have panel cracks. Panel cracks not only cause corrosion of steel bars and carbonization of concrete, but also reduce the anti-seepage ability of the building, affecting the use function of the building.

[0003] At present, the commonly used method for repairing cracks in dam panels is to apply epoxy mortar on the surface. The epoxy mortar consolidation body has high adhesion, high compressive strength and is not restricted by structural shape. It has excellent anti-seepage, anti-freeze, salt resistance, alkali resistance, weak acid resistance, corrosion resistance and repair and reinforcement properties, but poor durability and short service life.

[0004] In addition, since the cracks in the panels are irregular, if they are not repaired, water seepage will occur, affecting the service life of the dam. If the cracks in the panels are repaired, a lot of manpower and material resources will be required, and the cost is high. However, the method of applying epoxy mortar on the surface has defects such as poor durability and short service life.

[0005] Therefore, the present application provides a dam panel crack control structure based on an induced seam structure, which can control the generation and development of panel cracks, induce panel cracking without the need to repair the cracks, and essentially solve the problem of panel cracking and water seepage that needs to be repaired. Utility Model Content

[0006] The utility model aims to address the defects and shortcomings in the prior art and provides a dam panel crack control structure based on an induced seam structure.

[0007] The technical solution adopted by the utility model is: a dam panel crack control structure based on an induced seam structure, comprising:

[0008] Plain concrete panels;

[0009] The induction area is arranged in the plain concrete panel, and the number of the induction area is two. In the plane direction of the plain concrete panel, the two induction areas are arranged along the two diagonal directions of the plain concrete panel respectively, and in the vertical direction of the plain concrete panel, the two induction areas extend vertically from the top side of the plain concrete panel to the bottom side of the plain concrete panel;

[0010] A plurality of induction plates are vertically and spaced apart in the induction area to cut off the connection between the concrete on both sides of the induction area and reduce the structural strength of the concrete in the induction area;

[0011] A water stop sheet is provided in the induction area and below the induction sheet to prevent water from seeping into the dam body; and

[0012] The polyurea coating is arranged on the top surface of the plain concrete panel, is arranged along the length direction of the induction area, and is coated on the top of the induction area.

[0013] Preferably, the length of the water stop plate is arranged along the length direction of the induction area, and the width of the water stop plate is adapted to the width of the induction area.

[0014] Preferably, a positioning groove for positioning the guide plate is provided in the middle of the water stop plate, the positioning groove is provided along the length direction of the water stop plate, the bottom side of the guide plate is located in the positioning groove, and a plurality of the guide plates are evenly spaced along the length direction of the positioning groove.

[0015] Preferably, both sides of the water stop plate in the width direction are bent upward.

[0016] Preferably, a plurality of first inserted ribs are provided in the induction area, the plurality of first inserted ribs are arranged along a length direction perpendicular to the induction area, the plurality of first inserted ribs are arranged at equal intervals along the length direction of the induction area, both ends of the plurality of first inserted ribs extend out of the induction area, and the plurality of first inserted ribs are located above the induction sheet and abut against the top of the induction sheet.

[0017] Preferably, a plurality of second inserted ribs are further arranged in the induction area, the plurality of second inserted ribs are arranged opposite to and correspond to the plurality of first inserted ribs one by one, and the plurality of second inserted ribs are all located below the water stop plate and abut against the bottom of the water stop plate.

[0018] Preferably, the diameters of the first and second dowel bars are both 14 mm.

[0019] Preferably, the induction plate is made of stainless steel.

[0020] Preferably, the size of the induction plate is 150*100 mm, and the thickness of the induction plate is 50 mm.

[0021] Preferably, the water stop plate is made of copper.

[0022] After adopting the above technical solution, the beneficial effects of the utility model are:

[0023] The present application sets an induction area along two diagonal directions of the plain concrete panel, and sets an induction sheet and a water stop sheet in the induction area. When the plain concrete panel is cast and formed, due to changes in the external temperature and water level of the plain concrete panel, longitudinal tensile stress will be generated inside the plain concrete panel, so that the plain concrete panel will "preferentially" crack in the induction area, that is, at this time, an induction seam is generated inside the plain concrete panel, and the longitudinal internal stress of the concrete structure in the plain concrete panel is released through the induction seam, so that the plain concrete panel is prevented from cracking at a position outside the induction area, thereby achieving control of the generation and development of cracks inside the plain concrete panel, and essentially solving the structural problem of cracks in the plain concrete panel. By setting the water stop sheet in the induction area, the water flow inside the plain concrete panel is not easy to penetrate into the dam body at the bottom of the plain concrete panel. By setting the polyurea coating on the top surface of the plain concrete panel, it is difficult for the external water flow to penetrate into the plain concrete panel, which greatly improves the anti-water seepage performance of the plain concrete panel, so that the plain concrete panel does not need to be repaired after cracking, and essentially solves the problem that the traditional plain concrete panel needs to be repaired for cracking and water seepage, reduces the construction cost, has strong practicality, and has a good promotion and application prospect in the field of dam construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a plan view used to reflect the coordination relationship between the plain concrete panel and the induction area in the plane direction;

[0026] Figure 2 It is a cross-sectional view used to reflect the coordination relationship between the plain concrete panel, induction area, induction plate and water stop plate in the vertical direction.

[0027] Explanation of the reference numerals: 1. plain concrete panel; 2. induction area; 3. induction plate; 4. water stop plate; 41. positioning groove; 5. polyurea coating; 6. first dowel bar; 7. second dowel bar. DETAILED DESCRIPTION

[0028] The following will be combined with the attached embodiment of the utility model Figure 1-2 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "back", "side", "circumferential" and the like in the present invention indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the words "first", "second" and the like are only used to distinguish multiple components or structures with the same or similar structures, and do not represent any special limitation on the setting order or connection relationship.

[0030] The present embodiment relates to a dam panel crack control structure based on an induced seam structure, comprising a plain concrete panel 1 and an induced area 2 arranged in the plain concrete panel 1. The plain concrete panel 1 is made of cast concrete. There are two induced areas 2. In the plane direction of the plain concrete panel 1, the two induced areas 2 are respectively arranged along the diagonal directions of the plain concrete panel 1. In the vertical direction of the plain concrete panel 1, the two induced areas 2 extend vertically from the top side of the plain concrete panel 1 to the bottom side of the plain concrete panel 1.

[0031] An induction plate 3 is provided in the induction area 2, and the induction plate 3 is used to cut off the connection between the concrete on both sides of the induction area 2 to reduce the structural strength of the concrete in the induction area 2. There are a plurality of induction plates 3, and the plurality of induction plates 3 are vertically and spaced apart in the induction area 2, and the upper and lower sides of the induction plates 3 are both accommodated in the induction area 2. In the specific implementation process, the induction plates 3 are arranged in the middle of the induction area 2.

[0032] It should be noted that, during the construction of the traditional plain concrete panel 1, concrete is usually poured directly in a template, and the casting and forming of the plain concrete panel 1 is completed after the concrete is condensed. When the external temperature and water level of the plain concrete panel 1 change, longitudinal tensile stress will be generated inside the plain concrete panel 1. When the longitudinal tensile stress is large enough, the inside of the plain concrete panel 1 will crack, that is, cracks will be generated. At the same time, the cracks generated inside the plain concrete panel 1 are irregular. In this embodiment, by setting an induction area 2 in the plain concrete panel 1 and setting an induction sheet 3 in the induction area 2, the connection of the concrete on both sides of the induction area 2 is cut off by the induction sheet 3, and the structural strength of the concrete in the induction area 2 is reduced, so that when the plain concrete panel 1 is subjected to longitudinal tensile stress, it will crack preferentially in the induction area 2, that is, at this time, an induction seam will be generated in the induction area 2 in the plain concrete panel 1, so that the plain concrete panel 1 is prevented from cracking at a position outside the induction area 2. At this time, the cracks generated inside the plain concrete panel 1 (i.e., the induction seam) are controllable, thereby realizing the control of the generation and development of the cracks inside the plain concrete panel 1, and then solving the structural problem of cracks in the plain concrete panel 1 essentially.

[0033] A water stop plate 4 is also provided in the induction area 2. The water stop plate 4 is arranged along the length direction of the induction area 2. The water stop plate 4 is located below the induction plate 3. The water stop plate 4 is used to prevent the water flow in the plain concrete panel 1 from extending into the dam body below the plain concrete panel 1 through the induction seam.

[0034] It is understandable that, by setting the water stop plate 4, when the plain concrete panel 1 generates an induced seam in the induced area 2, it is difficult for the water flow in the plain concrete panel 1 to directly penetrate into the dam body through the induced seam, thereby improving the anti-water seepage performance of the plain concrete panel 1.

[0035] In order to prevent external water from flowing into the induction joint from the top surface of the plain concrete panel 1, a polyurea coating 5 is also provided on the top surface of the plain concrete panel 1. The polyurea coating 5 is arranged along the length direction of the induction area 2, and the polyurea coating 5 is coated on the top of the induction area 2.

[0036] It should be noted that the polyurea coating 5 has good anti-seepage and waterproof performance, and the polyurea coating 5 also has good stretchability, so that when an induced seam is generated inside the plain concrete panel 1, the polyurea coating 5 can stably seal the top surface of the induced seam, thereby making it difficult for external water to penetrate into the induced seam. In addition, the polyurea coating 5 can also be tightly bonded to the surrounding concrete, further improving the anti-seepage performance of the plain concrete panel 1.

[0037] Furthermore, in the present embodiment, the water stop sheet 4 is disposed along the length direction of the induction region 2 , and the width of the water stop sheet 4 is adapted to the width of the induction region 2 .

[0038] It can be understood that through the above-mentioned arrangement, when the plain concrete panel 1 generates an induced joint in the induced area 2, the water stop plate 4 can stably block the water flow flowing into the induced joint from the inside of the plain concrete panel 1, thereby preventing the water from flowing through the induced joint into the dam body below the plain concrete panel 1 and eroding the inside of the dam body.

[0039] Furthermore, in this embodiment, a positioning groove 41 for positioning the guide plate 3 is provided in the middle of the water stop plate 4, the positioning groove 41 is provided along the length direction of the water stop plate 4, the bottom side of the guide plate 3 is located in the positioning groove 41, and a plurality of guide plates 3 are distributed at equal intervals along the length direction of the positioning groove 41.

[0040] By setting the positioning groove 41, the induction piece 3 can be positioned and fixed, so that the induction piece 3 can be stably arranged in the induction area 2, and the induction piece 3 is easy to install, which reduces the construction difficulty and improves the construction efficiency.

[0041] Furthermore, in this embodiment, both sides of the water stop sheet 4 in the width direction are bent upward. By bending both sides of the water stop sheet 4 in the width direction upward, the water flow in the induction seam can be stably blocked above the water stop sheet 4, avoiding the situation where water flow seeps out from both sides of the water stop sheet 4, thereby ensuring the anti-water seepage performance of the induction area 2.

[0042] Furthermore, a plurality of first inserted ribs 6 are arranged in the induction area 2, the plurality of first inserted ribs 6 are arranged along the length direction perpendicular to the induction area 2, the plurality of first inserted ribs 6 are arranged at equal intervals along the length direction of the induction plate 3 area, both ends of the plurality of first inserted ribs 6 extend out of the induction area 2, and the plurality of first inserted ribs 6 are located above the induction plate 3 and abut against the top of the induction plate 3.

[0043] By setting the first dowel bar 6, the concrete structures on both sides of the induction area 2 can be connected, which plays a role in reinforcing the connection. At this time, the induction sheet 3 in the induction area 2 cuts off the concrete structures on both sides of the induction area 2, weakening the structural strength in the induction area 2, thereby achieving the effect of "strong on both sides and weak in the middle", and then the plain concrete panel 1 "preferentially" cracks in the induction area 2 when subjected to stress.

[0044] Furthermore, a plurality of second inserted ribs 7 are arranged in the induction area 2 , and the plurality of second inserted ribs 7 are arranged opposite to and correspond to the plurality of first inserted ribs 6 , and the plurality of second inserted ribs 7 are all located below the water stop plate 4 and abut against the bottom of the water stop plate 4 .

[0045] The function of the second dowel bar 7 is basically the same as that of the first dowel bar 6. Both are used to connect the concrete structures on both sides of the induction area 2 to achieve the effect of "weak in the middle and strong on both sides". In addition, the second dowel bar 7 can also support the water stop plate 4, so that during the specific construction (during casting), the water stop plate 4 and the induction plate 3 can be stably located in the induction area 2.

[0046] Furthermore, the diameters of the first inserted rib 6 and the second inserted rib 7 are both 14 mm. In other embodiments, the diameters of the first inserted rib 6 and the second inserted rib 7 may also be other values, which may be adjusted accordingly according to actual conditions, and are not limited here.

[0047] Furthermore, the guide plate 3 is made of stainless steel, the size of the guide plate 3 is 150mm*100mm, the thickness of the guide plate 3 is 50mm, and the water stop plate 4 is made of copper. In other embodiments, the guide plate 3 can also be other metals or alloys with better corrosion resistance, the size of the guide plate 3 can also be adjusted accordingly according to the on-site construction requirements, and the water stop plate 4 can also be set to a metal or alloy with better corrosion resistance.

[0048] In addition, this embodiment also provides a construction method of the above-mentioned dam panel crack control structure, including the following steps:

[0049] The first step is to make a template for pouring the plain concrete panel 1 according to the design requirements;

[0050] The second step is to pour a layer of concrete in the formwork, and to arrange second dowel bars 7 perpendicular to the diagonals at equal intervals along the two diagonals of the formwork;

[0051] The third step is to respectively set two water stop plates 4 along the two diagonal directions of the template, and the bottom of the water stop plate 4 is in contact with the second dowel 7;

[0052] Step 4: insert a number of guide plates 3 at equal intervals along the length direction of the positioning groove 41 of the water stop plate 4, and keep the guide plates 3 vertical;

[0053] Step 5: Continue pouring concrete into the formwork until the concrete height is flush with the top of the induction plate 3 and stop pouring;

[0054] Step 6: The first inserted ribs 6 are arranged at equal intervals along the two diagonal directions of the template, so that the first inserted ribs 6 and the second inserted ribs 7 are arranged opposite to each other, and the first inserted ribs 6 are in contact with the top of the induction sheet 3;

[0055] Step 7: Continue pouring concrete into the formwork until the plain concrete panel 1 is cast and formed;

[0056] Step 8: After the concrete is initially set, the polyurea coating 5 is coated along the two diagonal directions of the plain concrete panel 1, and the width of the polyurea coating 5 is equal to the width of the water stop 4;

[0057] Step 9: Wait until the concrete has completely set.

[0058] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A dam face plate crack control structure based on an induced seam structure, characterized in that: include: Plain concrete panel (1); The induction area (2) is arranged in the plain concrete panel (1), and the number of the induction areas (2) is two. In the plane direction of the plain concrete panel (1), the two induction areas (2) are respectively arranged along the two diagonal directions of the plain concrete panel (1). In the vertical direction of the plain concrete panel (1), the two induction areas (2) extend vertically from the top side of the plain concrete panel (1) to the bottom side of the plain concrete panel (1); A plurality of induction plates (3) are vertically and spaced apart in the induction area (2) to cut off the connection between the concrete on both sides of the induction area (2) and reduce the structural strength of the concrete in the induction area (2); A water stop plate (4) is arranged in the induction area (2) and below the induction plate (3) to prevent water from seeping into the dam body; as well as The polyurea coating (5) is arranged on the top surface of the plain concrete panel (1), is arranged along the length direction of the induction area (2), and is coated on the top of the induction area (2).

2. A dam face plate crack control structure based on an induced seam structure according to claim 1, characterized in that: The water stop plate (4) is arranged along the length direction of the induction area (2), and the width of the water stop plate (4) is adapted to the width of the induction area (2).

3. A dam face plate crack control structure based on an induced seam structure according to claim 2, characterized in that: A positioning groove (41) for positioning the guide plate (3) is provided in the middle of the water stop plate (4); the positioning groove (41) is provided along the length direction of the water stop plate (4); the bottom side of the guide plate (3) is located in the positioning groove (41); and a plurality of guide plates (3) are distributed at equal intervals along the length direction of the positioning groove (41).

4. The dam face plate crack control structure based on the induced seam structure according to claim 1 is characterized in that: Both sides of the water stop plate (4) in the width direction are bent upwards.

5. The dam face plate crack control structure based on the induced seam structure according to claim 1 is characterized in that: A plurality of first inserted ribs (6) are provided in the induction region (2); the plurality of first inserted ribs (6) are arranged along a length direction perpendicular to the induction region (2); the plurality of first inserted ribs (6) are arranged at equal intervals along the length direction of the induction region (2); both ends of the plurality of first inserted ribs (6) extend out of the induction region (2); and the plurality of first inserted ribs (6) are located above the induction sheet (3) and abut against the top of the induction sheet (3).

6. A dam face plate crack control structure based on an induced seam structure according to claim 5, characterized in that: A plurality of second inserted ribs (7) are also arranged in the induction area (2), the plurality of second inserted ribs (7) are arranged opposite to and correspond to the plurality of first inserted ribs (6), and the plurality of second inserted ribs (7) are all located below the water stop plate (4) and abut against the bottom of the water stop plate (4).

7. A dam face plate crack control structure based on an induced seam structure according to claim 6, characterized in that: The diameters of the first inserted rib (6) and the second inserted rib (7) are both 14 mm.

8. The dam face plate crack control structure based on the induced seam structure according to claim 1 is characterized in that: The induction plate (3) is made of stainless steel.

9. The dam face plate crack control structure based on the induced seam structure according to claim 1 is characterized in that: The size of the induction sheet (3) is 150*100 mm, and the thickness of the induction sheet (3) is 50 mm.

10. The dam face plate crack control structure based on the induced seam structure according to claim 1, characterized in that: The water stop sheet (4) is made of copper.

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