Sealing structure for underwater fabricated building

Abstract

The utility model discloses a sealing structure for an underwater fabricated building, which comprises upper concrete and lower concrete, a mounting cavity is arranged between the bottom surface of the upper concrete and the top surface of the lower concrete, and an elastic sealing element is arranged in the mounting cavity along the up-down direction in an extruding and fitting manner. A filling inner cavity is formed in the elastic sealing piece, a filling inner core is arranged in the filling inner cavity, and an expansion piece is arranged on one side of the elastic sealing piece; according to the utility model, underwater vibration and inching slippage of the concrete structure can be resisted, and the concrete cavity is tightly filled to ensure underwater sealing performance; and meanwhile, when the concrete cavity leaks, the concrete can further expand to fill the cavity so as to ensure the sealing performance and prolong the sealing life.

Description

Technical Field

[0001] The utility model belongs to the technical field of underwater assembly of buildings and relates to a sealing structure for underwater assembled buildings. Background Art

[0002] The waterproof sealing method for exterior wall formwork primarily involves laying a waterproof membrane between the formwork and the outer layer of adhesive, with the concrete pouring process primarily applying it to the interior of the formwork. This is currently the most widely used and common waterproof sealing method. The advantages of this sealing method are speed, efficiency, and ease of construction during concrete construction. However, the waterproofing and sealing effects of this sealing method are relatively weak, especially in underwater sealing environments, where the sealing cannot withstand the test of prolonged water pressure. Furthermore, because vibrations are more easily transmitted underwater than in air, micro-slippage often occurs between the joints of underwater concrete structures, creating gaps in existing underwater concrete sealing structures and compromising the sealing performance of the entire structure.

[0003] Therefore, in order to solve the problems of difficult to ensure sealing and limited sealing life of traditional underwater concrete building sealing structures, the utility model discloses a sealing structure for underwater prefabricated buildings. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing structure for underwater prefabricated buildings, which can resist underwater vibrations and micro-slip of concrete structures, tightly fill the concrete cavity to ensure underwater sealing; at the same time, when the concrete cavity leaks, it can further expand and fill the cavity to ensure sealing and extend the sealing life.

[0005] The utility model is achieved through the following technical solutions:

[0006] A sealing structure for underwater prefabricated buildings comprises upper concrete and lower concrete, an installation cavity being provided between the bottom surface of the upper concrete and the top surface of the lower concrete, an elastic sealing member being extruded and fitted in the vertical direction inside the installation cavity, a filling inner cavity being provided inside the elastic sealing member, a filling inner core being provided inside the filling inner cavity, and an expansion member being provided on one side of the elastic sealing member.

[0007] The bottom surface of the upper concrete and the top surface of the lower concrete are combined to form an installation cavity. An elastic seal is extruded and fitted in the vertical direction inside the installation cavity, and a filling cavity is provided inside the elastic seal. Before the elastic seal is assembled inside the installation cavity, the filling cavity is pumped to a vacuum state using a vacuum suction device, so that a negative pressure is maintained in the filling cavity. At this time, the elastic seal is in a contracted state under the action of the negative pressure. The contracted elastic seal is stacked inside the installation cavity. A filling core is then poured into the filling cavity of the elastic seal. The filling core fills the elastic seal from a contracted state to an expanded state, so that the stacked elastic seals completely and tightly fill the installation cavity to form a sealed structure.

[0008] An expansion piece is provided on the surface of the elastic seal corresponding to the joint position between the upper concrete and the lower concrete. When the sealing structure is inactivated and a gap appears between the elastic seal and the concrete, moisture can leak through the gap. The moisture enters the gap of the sealing structure and contacts the expansion piece, causing the expansion piece to swell when it encounters water. The expanded expansion piece squeezes the elastic seal, and the elastic seal refills the installation cavity tightly, thereby extending the service life of the sealing structure.

[0009] In order to better realize the present invention, further, a mounting groove is provided on the bottom end surface of the upper concrete and the top end surface of the lower concrete, and at least one elastic seal is provided inside the mounting groove along the up and down directions. The elastic seal extends to the outside of the mounting groove on one side close to the opening of the mounting groove and is provided with at least one expansion member.

[0010] In order to better implement the present invention, further, the edge of the elastic seal extending to the outer side of the opening of the installation groove is provided with a conformal chamfer.

[0011] In order to better implement the present invention, further, both ends of the bottom surface of the installation groove are provided with filling chamfers, and the diameter of the opening end of the installation groove is larger than the diameter of the bottom surface of the installation groove.

[0012] In order to better realize the present invention, further, an adhesive layer is provided between the bottom surface of the installation groove and the outer side surface of the elastic seal, and between the groove side surface of the installation groove and the outer side surface of the elastic seal.

[0013] In order to better realize the present invention, further, an expansion groove is provided on one side of the elastic seal close to the bottom surface of the installation groove, the expansion groove and the elastic seal are integrally formed, and an expansion member is provided inside the expansion groove.

[0014] In order to better realize the present invention, further, the expansion member includes at least one water-expandable unit arranged between the bottom surface of the expansion groove and the opening of the installation groove.

[0015] In order to better realize the present invention, further, the water-swelling unit is prepared by a water-swelling material with an expansion rate greater than 150%.

[0016] In order to better realize the present invention, further, the bottom end surface of the upper concrete and the top end surface of the lower concrete are both coated with a lubricating layer.

[0017] In order to better realize the present invention, further, the filling core is prepared from inorganic materials.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] (1) The utility model fills an elastic seal inside the installation cavity formed by the upper concrete and the lower concrete, and sets a filling inner cavity inside the elastic seal. Before the elastic seal is assembled into the interior of the installation cavity, the air in the filling inner cavity is extracted by an external vacuum suction device, so that the filling inner cavity maintains a vacuum negative pressure state, and the elastic seal is in a contracted state, thereby making the elastic seal more convenient and quick to assemble into the interior of the installation cavity, thereby improving the assembly efficiency of the elastic seal inside the installation cavity and reducing the assembly difficulty;

[0020] (2) The utility model pours a filling core into the filling cavity of the assembled elastic seal, and the elastic seal is expanded and squeezed by the internal expansion of the filling core, thereby ensuring that the elastic seal can tightly fill the installation cavity, thereby improving the underwater sealing performance; at the same time, through the elastic deformation characteristics of the elastic seal itself, the elastic seal can produce follow-up movement when the concrete slightly slides due to vibration, thereby ensuring that the elastic seal always tightly fills the installation cavity, thereby ensuring the underwater sealing performance of the concrete structure under a vibration environment;

[0021] (3) The present invention provides an expansion piece between the contact surface of the elastic seal and the concrete. Even if a gap appears between the elastic seal and the installation cavity after aging, causing water leakage, the expansion piece can absorb water and expand to counter-press the elastic seal, so that the elastic seal can re-fill the installation cavity tightly, further improving the life of the underwater concrete sealing structure.

[0022] (4) The elastic seal is made of rubber and has a service life of more than 20 years, which ensures the service life of the underwater structure; and the filling cavity of the elastic seal is in a completely sealed state. Unless the elastic seal is broken as a whole, the filling core inside it will not leak, and will not cause pollution to the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure for assembling and forming the sealing structure;

[0024] Figure 2 A schematic diagram of the assembly of the elastic seal and the mounting groove;

[0025] Figure 3 Schematic diagram of the structure of the elastic seal;

[0026] Figure 4 A schematic diagram of two elastic seals stacked inside the mounting groove;

[0027] Figure 5 A schematic diagram of an integral expansion member;

[0028] Figure 6 Schematic diagram of a split expansion piece.

[0029] Among them: 1-upper concrete; 2-lower concrete; 3-elastic sealing element; 4-filling inner core; 5-expansion element; 100-installation groove; 200-expansion groove; 300-filling inner cavity. DETAILED DESCRIPTION

[0030] Example 1:

[0031] A sealing structure for underwater prefabricated buildings in this embodiment, such as Figure 1-Figure 3 As shown, it includes upper concrete 1 and lower concrete 2, and an installation cavity is provided between the bottom surface of the upper concrete 1 and the top surface of the lower concrete 2. An elastic seal 3 is provided inside the installation cavity by being squeezed and fitted along the up and down directions. A filling cavity 300 is provided inside the elastic seal 3, and a filling core 4 is provided inside the filling cavity 300. An expansion member 5 is provided on one side of the elastic seal 3.

[0032] After the bottom surface of the upper concrete 1 and the top surface of the lower concrete 2 are assembled and joined together, an installation cavity is formed between the bottom surface of the upper concrete 1 and the top surface of the lower concrete 2. Inside the installation cavity, at least two elastic seals 3 are arranged in a vertical direction, pressed against each other. A filling cavity 300 is provided inside the elastic seal 3. Before the elastic seal 3 is assembled inside the installation cavity, the air inside the filling cavity 300 is extracted by an external vacuum suction device, so that the interior of the filling cavity 300 maintains a vacuum negative pressure state. Under the action of the vacuum negative pressure, the elastic seal 3 is caused to shrink, thereby making it easier to assemble the elastic seal 3 into the installation cavity, greatly reducing the difficulty of assembling the elastic seal 3 inside the installation cavity.

[0033] After the elastic seals 3 are stacked within the mounting cavity, a filler is poured into the inner cavity 300 of the elastic seals 3 using grouting equipment to form a filling core 4. The internal expansion force of the filling core 4 causes the elastic seals 3 to expand. The expanded elastic seals 3 squeeze and deform against each other, tightly filling the mounting cavity to form a sealed structure, thereby achieving underwater sealing of the concrete assembly structure.

[0034] An expansion piece 5 is provided on one side of the elastic seal 3 corresponding to the splicing position between the upper concrete 1 and the lower concrete 2. When the elastic seal 3 ages and causes leakage inside the installation cavity, the moisture entering the installation cavity comes into contact with the expansion piece 5, thereby causing the expansion piece 5 to expand and press against the elastic seal 3, so that the elastic seal 3 re-tightly fills the installation cavity to achieve sealing.

[0035] Example 2:

[0036] This embodiment is further optimized based on the above embodiment 1. Figure 2 As shown, a mounting groove 100 is provided on the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2, and at least one elastic seal 3 is provided inside the mounting groove 100 along the up and down directions. The elastic seal 3 extends from one side close to the opening of the mounting groove 100 to the outside of the mounting groove 100 and is provided with at least one expansion member 5.

[0037] After the bottom surface of the upper concrete 1 and the top surface of the lower concrete 2 are aligned and assembled, the openings of the installation grooves 100 on the upper and lower sides are assembled to form an installation cavity. Figure 2 As shown, an elastic sealing member 3 is provided inside the mounting groove 100; Figure 4As shown, two elastic seals 3 are stacked and arranged inside the mounting groove 100. The volume of a single elastic seal 3 in its expanded state, or the expanded volume of multiple elastic seals 3 when stacked, should be larger than the volume of the mounting groove 100. This ensures that after the filling core 4 is poured into the filling cavity 300 of the elastic seal 3, the elastic seals 3 can squeeze each other and tightly fill the entire mounting cavity, thereby ensuring the sealing performance of the sealing structure.

[0038] At the same time, at least one expansion member 5 is provided on one side of the elastic seal 3 corresponding to the joint between the upper concrete 1 and the lower concrete 2. During normal use, the sealing structure maintains good sealing properties, preventing moisture from entering the interior of the installation cavity. However, after prolonged use, the elastic seal 3 ages and is no longer able to tightly fill the installation cavity, creating a gap between the outer surface of the elastic seal 3 and the installation cavity. Moisture then enters the gap and contacts the expansion member 5, causing the expansion member 5 to expand upon contact with water. The expanded expansion member 5 further compresses the elastic seal 3, causing the outer surface of the elastic seal 3 to tightly fill the interior of the installation cavity again, thereby ensuring the sealing properties of the sealing structure even after prolonged use.

[0039] Furthermore, the elastic sealing member 3 is made of elastic rubber material.

[0040] Furthermore, the elastic seal 3 is provided with a conformal chamfer at the edge of the outer side of the opening extending to the mounting groove 100. When the filling inner cavity 300 of the elastic seal 3 is sucked to a vacuum negative pressure state, the conformal chamfer is provided so that the side of the elastic seal 3 close to the opening of the mounting groove 100 can shrink and deform to a state close to being flush with the opening end face of the mounting groove 100, thereby ensuring the assembly consistency of the elastic seal 3 and the opening end face of the mounting groove 100.

[0041] Furthermore, filling chamfers are provided at both ends of the bottom surface of the mounting groove 100, and the diameter of the open end of the mounting groove 100 is larger than the diameter of the bottom surface of the mounting groove 100. By providing the filling chamfers at both ends of the bottom surface of the mounting groove 100, when the elastic seal 3 is compressed and expands and deforms inside the mounting groove 100, the elastic seal 3 can expand smoothly through the filling chamfers to tightly fill the mounting groove 100, thereby avoiding the formation of a gap between the elastic seal 3 and the mounting groove 100.

[0042] Furthermore, an adhesive layer is provided between the bottom surface of the mounting groove 100 and the outer side surface of the elastic seal 3, as well as between the groove side surface of the mounting groove 100 and the outer side surface of the elastic seal 3. The elastic seal 3 is positioned inside the mounting groove 100 through the adhesive layer, thereby preventing the elastic seal 3 from slipping in the mounting groove 100 before assembly is completed.

[0043] The rest of this embodiment is the same as that of embodiment 1, so it will not be described again.

[0044] Example 3:

[0045] This embodiment further optimizes the above-mentioned embodiment 1 or 2. An expansion groove 200 is provided on the side of the elastic sealing member 3 close to the opening of the mounting groove 100. An expansion member 5 is provided inside the expansion groove 200. The expansion member 5 includes at least one water-expandable unit provided between the bottom surface of the expansion groove 200 and the opening of the mounting groove 100.

[0046] like Figure 5 As shown, the expansion member 5 comprises an integral water-expandable unit disposed on the bottom surface of the expansion tank 200. The integral water-expandable unit has excellent consistency in expansion and deformation and is suitable for sealing operations in water depths exceeding 20m.

[0047] like Figure 6 As shown, the expansion member 5 includes three separate water-expandable units arranged in sequence on the bottom surface of the expansion tank 200. The separate water-expandable units have a fast expansion and deformation response rate and are suitable for sealing operations in water depths of less than or equal to 20m.

[0048] Furthermore, the water-swelling unit is prepared from a water-swelling material having an expansion rate greater than 150%; the water-swelling unit is prepared from a water-swelling adhesive material.

[0049] The rest of this embodiment is the same as that of the above-mentioned embodiment 1 or 2, and thus will not be described in detail.

[0050] Example 4:

[0051] This embodiment is further optimized based on any one of the above embodiments 1-3, and the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2 are both coated with a lubricating layer.

[0052] A bag containing lubricating grease can be pre-installed between the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2. When the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2 are assembled, the bag is compressed and ruptures, allowing the lubricating grease to overflow between the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2. Alternatively, lubricating grease can be directly applied between the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2, thereby allowing the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2 to slightly slide relative to each other, so that the bottom end surface of the upper concrete 1 and the top end surface of the lower concrete 2 can be aligned and assembled.

[0053] The rest of this embodiment is the same as any of the above embodiments 1-3, so it will not be repeated here.

[0054] Example 5:

[0055] This embodiment is further optimized based on any one of the above embodiments 1-4, and the filling core 4 is made of silicate material or inorganic cement material.

[0056] The rest of this embodiment is the same as any of the above embodiments 1-4, so it will not be repeated here.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention falls within the scope of protection of the present invention.

Claims

1. A sealing structure for underwater prefabricated buildings, comprising upper concrete (1) and lower concrete (2), characterized in that: An installation cavity is provided between the bottom surface of the upper concrete (1) and the top surface of the lower concrete (2); an elastic sealing member (3) is provided inside the installation cavity by being pressed and fitted in the up-down direction; a filling inner cavity (300) is provided inside the elastic sealing member (3); a filling inner core (4) is provided inside the filling inner cavity (300); and an expansion member (5) is provided on one side of the elastic sealing member (3).

2. A sealing structure for underwater prefabricated buildings according to claim 1, characterized in that: A mounting groove (100) is provided on the bottom end surface of the upper concrete (1) and the top end surface of the lower concrete (2), at least one elastic sealing member (3) is provided inside the mounting groove (100) along the up-down direction, and the elastic sealing member (3) extends to the outside of the mounting groove (100) on a side close to the opening of the mounting groove (100) and is provided with at least one expansion member (5).

3. A sealing structure for underwater prefabricated buildings according to claim 2, characterized in that: The elastic sealing member (3) is provided with a conformal chamfer at an edge extending to the outside of the opening of the mounting groove (100).

4. A sealing structure for underwater prefabricated buildings according to claim 3, characterized in that: Both ends of the bottom surface of the installation groove (100) are provided with filling chamfers, and the diameter of the opening end of the installation groove (100) is larger than the diameter of the bottom surface of the installation groove (100).

5. A sealing structure for underwater prefabricated buildings according to claim 4, characterized in that: An adhesive layer is provided between the bottom surface of the installation groove (100) and the outer side surface of the elastic sealing member (3), as well as between the side surface of the installation groove (100) and the outer side surface of the elastic sealing member (3).

6. A sealing structure for underwater prefabricated buildings according to any one of claims 1 to 5, characterized in that: An expansion groove (200) is provided on one side of the elastic sealing member (3) close to the opening of the installation groove (100), and an expansion member (5) is provided inside the expansion groove (200).

7. A sealing structure for underwater prefabricated buildings according to claim 6, characterized in that: The expansion member (5) comprises at least one water-expandable unit arranged between the bottom surface of the expansion groove (200) and the opening of the mounting groove (100).

8. The sealing structure for underwater prefabricated buildings according to claim 7, characterized in that: The water-swelling unit is prepared from a water-swelling material with an expansion rate greater than 150%.

9. A sealing structure for underwater prefabricated buildings according to any one of claims 1 to 5, characterized in that: The bottom end surface of the upper concrete (1) and the top end surface of the lower concrete (2) are both coated with a lubricating layer.

10. A sealing structure for underwater prefabricated buildings according to any one of claims 1 to 5, characterized in that: The filling inner core (4) is prepared from inorganic materials.

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