Hidden deformation joint of accessible roof

Abstract

The utility model discloses an accessible roof hidden type deformation joint which comprises a waterproof structure layer, a fire retardant belt and a heat preservation sealing layer, a first drainage ditch and a first concrete reverse ridge are arranged on a first base body, and a second drainage ditch and a second concrete reverse ridge are arranged on a second base body. A first concrete retaining wall is arranged between the first drainage ditch and the first concrete reverse ridge, a second concrete retaining wall is arranged between the second drainage ditch and the second concrete reverse ridge, the waterproof structure layer comprises a water collecting tank, a waterproof layer, a rubber elastomer and a U-shaped steel cover plate which are sequentially arranged from bottom to top, and a stone cover plate is arranged above the U-shaped steel cover plate. And the top surface of the stone cover plate is as high as the top of the accessible roof. The hidden structure is reasonable in structural design, the hidden design of the accessible roof deformation joint is achieved, the construction process of the deformation joint can be optimized, the waterproof construction quality and durability are improved, the hidden danger of leakage is eradicated, the accessible roof surface layer is smooth and free of a protruding structure, passing of personnel is facilitated, and the impression effect is obviously improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a hidden expansion joint for a roof with people walking on it. Background Art

[0002] Roof expansion joints are crucial to roof construction quality. Traditional construction methods typically elevate the structural nodes on either side of the expansion joint and seal it with prefabricated expansion joint covers. However, this method makes it difficult for personnel to access the roof after construction, requiring the installation of additional walkways across the expansion joints. This hinders access and does not meet the functional requirements of a pedestrian-friendly roof.

[0003] Therefore, it is necessary to propose a hidden expansion joint on the roof that is convenient for people to walk on. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a hidden expansion joint for a walk-on roof in response to the deficiencies in the above-mentioned prior art. The structure is reasonably designed. By realizing the hidden design of the expansion joint for the walk-on roof, the expansion joint construction process can be optimized, the construction quality and durability of the waterproofing can be improved, the hidden danger of leakage can be eliminated, and the surface layer of the walk-on roof can be smooth without protruding structures, which is convenient for people to pass through and the visual effect is significantly improved.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a hidden expansion joint for a walkable roof, comprising an expansion joint located between a first base and a second base, characterized in that a waterproof structural layer is provided on the top of the expansion joint, a fire barrier strip is provided on the bottom of the expansion joint, and a thermal insulation sealing layer is filled in the expansion joint; a first drainage ditch and a first concrete counter-ridge are provided on the first base, a second drainage ditch and a second concrete counter-ridge are provided on the second base, a first concrete retaining wall is provided between the first drainage ditch and the first concrete counter-ridge, and a second concrete retaining wall is provided between the second drainage ditch and the second concrete counter-ridge;

[0006] The waterproof structural layer includes a water collection trough, a waterproof layer, a rubber elastic body and a U-shaped steel cover plate which are arranged across the expansion joint from bottom to top. A first groove is provided on the top of the first concrete counter-ridge and the second concrete counter-ridge on one side close to the expansion joint. Both sides of the water collection trough are respectively built on the bottom of the first groove of the first concrete counter-ridge and the second concrete counter-ridge. A second groove is provided on the top of the first concrete retaining wall on one side close to the first concrete counter-ridge and the top of the second concrete retaining wall on one side close to the second concrete counter-ridge. Two extruded plates are provided in the second groove. Both sides of the U-shaped steel cover plate are respectively inserted between the two extruded plates in the second groove on the same side. A stone cover plate is provided above the U-shaped steel cover plate. The top surface height of the stone cover plate is equivalent to the top height of the roof for people to walk on.

[0007] The above-mentioned hidden expansion joint for a roof with people walking on it is characterized in that: the water collection trough includes a trough bottom, two inclined trough walls and two horizontal upper edges, the bottoms of the two inclined trough walls are respectively connected to the two sides of the trough bottom, the two horizontal upper edges are respectively connected to the tops of the two inclined trough walls, the distance between the two inclined trough walls increases from bottom to top, and the two horizontal upper edges are respectively arranged close to the trough bottoms of the two first grooves.

[0008] The above-mentioned hidden expansion joint for a walkable roof is characterized in that the groove bottom and the two oblique groove walls are both located within the expansion joint.

[0009] The above-mentioned hidden expansion joint of a walkable roof is characterized in that: the waterproof layer includes a bottom waterproof roll layer and a top additional waterproof roll layer, the part of the bottom waterproof roll layer located at the expansion joint is recessed downward to form a bottom circular arc recessed portion, and the part of the top additional waterproof roll layer located at the expansion joint is recessed downward to form a top circular arc recessed portion, and an elastic foam rod is arranged between the bottom circular arc recessed portion and the top circular arc recessed portion.

[0010] The above-mentioned hidden expansion joint of a walkable roof is characterized in that one end of the bottom waterproof roll layer is laid along the surface of the first concrete counter-ridge and extends to above the insulation layer of the first substrate, and the other end of the bottom waterproof roll layer is laid along the surface of the second concrete counter-ridge and extends to above the insulation layer of the second substrate.

[0011] The above-mentioned hidden expansion joint of the accessible roof is characterized in that the bottom waterproof roll layer is fixed between the portion located on the top of the first concrete counter-ridge and the first concrete counter-ridge by anchor bolts.

[0012] The above-mentioned hidden expansion joint of a walkable roof is characterized in that one side of the top additional waterproof roll layer is laid along the surface of the bottom waterproof roll layer and extends to the top of the first concrete counter-ridge, and the other side of the top additional waterproof roll layer is laid along the surface of the bottom waterproof roll layer and extends to the top of the second concrete counter-ridge.

[0013] The above-mentioned hidden expansion joint for a walkable roof is characterized in that the portion of the rubber elastic body located at the expansion joint arches upward to form a circular arc arch, one side of the rubber elastic body is laid along the surface of the additional waterproof roll layer on the top and extends to the groove wall of a first groove, and the other side of the rubber elastic body is laid along the surface of the additional waterproof roll layer on the top and extends to the groove wall of another first groove.

[0014] The above-mentioned hidden expansion joint for a walkable roof is characterized in that the U-shaped steel cover plate is buckled on the top of the first concrete counter-ridge and the second concrete counter-ridge.

[0015] The above-mentioned hidden expansion joint for a walkable roof is characterized in that the two sides of the stone cover are respectively arranged on the top of the first concrete counter-step and the second concrete counter-step, and the arc arch of the rubber elastic body is arranged below the bottom of the stone cover.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The utility model provides a water collection trough at the bottom of the waterproof layer, which can further protect the expansion joint. When the waterproof layer exceeds the design service life of the membrane or is accidentally damaged, the water collection trough will protect the roof from rainwater leakage to the area below, affecting normal use.

[0018] 2. The utility model can enhance the bearing capacity of the surface layer and meet the deformation requirements of the on-site deformation joint structure by arranging U-shaped steel cover plates across the deformation joints, so as not to damage the surface decoration. At the same time, a stone cover plate is arranged above the U-shaped steel cover plate. The stone cover plate adopts dry laying of stone surface layer, which is convenient for maintenance and replacement and can also play a role in water interception, achieving multiple goals at one stroke, reducing costs and increasing efficiency, and having a good appearance.

[0019] 3. The utility model can effectively realize the concealed design of the expansion joint of the accessible roof by making the top surface height of the stone cover plate equal to the top height of the accessible roof. It is suitable for the treatment of expansion joints of public buildings such as roofs, terraces, corridors, etc. that have high requirements for passage and decorative effects. The concealed design of the expansion joint of the accessible roof can deal with stubborn problems such as leakage of roof expansion joints, reduce subsequent maintenance costs, and reduce costs and increase efficiency.

[0020] To sum up, the structural design of the utility model is reasonable. By realizing the concealed design of the expansion joint of the accessible roof, the expansion joint construction process can be optimized, the construction quality and durability of the waterproofing can be improved, the hidden danger of leakage can be eliminated, and the surface layer of the accessible roof is flat without protruding structures, which is convenient for people to pass through and the visual effect is significantly improved.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a structural schematic diagram of the water collecting trough of the utility model.

[0024] Description of the accompanying drawings:

[0025] 1—first base; 2—second base; 3—expansion joint;

[0026] 4—fire barrier; 5—thermal insulation and sealing layer; 6—first drainage ditch;

[0027] 7—first concrete counter-bank; 8—second drainage ditch; 9—second concrete counter-bank;

[0028] 10—first concrete retaining wall; 11—second concrete retaining wall; 12—water collection trough;

[0029] 12-1—Trough bottom; 12-2—Oblique trough wall; 12-3—Horizontal upper edge;

[0030] 13—Bottom waterproof roll layer; 14—Elastic foam rod; 15—Top additional waterproof roll layer;

[0031] 16—anchor bolt; 17—rubber elastic body; 18—U-shaped steel cover plate;

[0032] 19—extruded polystyrene board; 20—stone cover board. DETAILED DESCRIPTION

[0033] like Figure 1 and Figure 2 As shown, the utility model includes an expansion joint 3 located between a first base 1 and a second base 2, a waterproof structural layer is provided on the top of the expansion joint 3, a fire barrier strip 4 is provided on the bottom of the expansion joint 3, and a thermal insulation sealing layer 5 is filled in the expansion joint 3. A first drainage ditch 6 and a first concrete anti-ridge 7 are provided on the first base 1, a second drainage ditch 8 and a second concrete anti-ridge 9 are provided on the second base 2, a first concrete retaining wall 10 is provided between the first drainage ditch 6 and the first concrete anti-ridge 7, and a second concrete retaining wall 11 is provided between the second drainage ditch 8 and the second concrete anti-ridge 9;

[0034] The waterproof structural layer includes a water collection trough 12, a waterproof layer, a rubber elastic body 17 and a U-shaped steel cover plate 18 arranged from bottom to top across the expansion joint 3. The first concrete anti-step 7 and the second concrete anti-step 9 are both provided with a first groove on the top of the side close to the expansion joint 3. The two sides of the water collection trough 12 are respectively built on the bottom of the first groove of the first concrete anti-step 7 and the second concrete anti-step 9. The first concrete retaining wall 10 is provided with a second groove on the top of the side close to the first concrete anti-step 7 and the second concrete retaining wall 11 is provided with a second groove. Two extruded boards 19 are provided in the second groove. The two sides of the U-shaped steel cover plate 18 are respectively inserted between the two extruded boards 19 in the second groove on the same side. A stone cover plate 20 is provided above the U-shaped steel cover plate 18. The top surface height of the stone cover plate 20 is equivalent to the top height of the roof.

[0035] In actual use, the water collection trough 12 is made of 304 stainless steel by cutting and bending. The water collection trough 12 can be spliced ​​by multiple sections along the length direction of the expansion joint 3. By arranging the water collection trough 12 at the bottom of the waterproof layer, the expansion joint 3 can be further protected by the water collection trough 12. When the waterproof layer exceeds the design service life of the membrane or is accidentally damaged, the protection of the water collection trough 12 will not cause rainwater from the roof to leak into the area downstairs and affect normal use.

[0036] It should be noted that the U-shaped steel cover 18 is made of 3mm thick galvanized steel plate. By arranging the U-shaped steel cover 18 across the expansion joint 3, the bearing capacity of the surface layer can be enhanced while meeting the requirements of the on-site deformation joint structure deformation without damaging the surface decoration; at the same time, a stone cover 20 is arranged above the U-shaped steel cover 18. The stone cover 20 is dry-laid with a stone surface layer, which is convenient for maintenance and replacement and can also play a role in water interception, achieving multiple goals at one stroke, reducing costs and increasing efficiency, and having a good appearance.

[0037] During specific implementation, by making the top surface height of the stone cover 20 equivalent to the top height of the accessible roof, the concealed design of the deformation joint of the accessible roof can be effectively realized. It is suitable for the treatment of deformation joints of public buildings such as roofs, terraces, corridors, etc. that have high requirements for passage and decorative effects. The concealed design of the deformation joint of the accessible roof can deal with stubborn problems such as leakage of roof deformation joints, reduce subsequent maintenance costs, and reduce costs and increase efficiency.

[0038] In specific implementation, when constructing the thermal insulation sealing layer 5, the XPS insulation board that exceeds the gap width by 3mm to 5mm is cut and directly filled. It can be tightly fixed on the deformation joint concrete structure without other external fixing measures, and fits tightly with the concrete structure without gaps, meeting the energy-saving requirements of the project.

[0039] During specific implementation, the top surface of the stone cover plate 20 is flush with the top of the roof surface layer for people to walk on.

[0040] In this embodiment, the water collecting trough 12 includes a trough bottom 12-1, two inclined trough walls 12-2 and two horizontal upper edges 12-3. The bottoms of the two inclined trough walls 12-2 are respectively connected to the two sides of the trough bottom 12-1, and the two horizontal upper edges 12-3 are respectively connected to the tops of the two inclined trough walls 12-2. The distance between the two inclined trough walls 12-2 increases from bottom to top, and the two horizontal upper edges 12-3 are respectively arranged close to the bottoms of the two first grooves.

[0041] In this embodiment, the groove bottom 12 - 1 and the two inclined groove walls 12 - 2 are all located in the expansion joint 3 .

[0042] In this embodiment, the waterproof layer includes a bottom waterproof roll layer 13 and a top additional waterproof roll layer 15. The portion of the bottom waterproof roll layer 13 located at the expansion joint 3 is recessed downward to form a bottom circular arc recessed portion, and the portion of the top additional waterproof roll layer 15 located at the expansion joint 3 is recessed downward to form a top circular arc recessed portion. An elastic foam rod 14 is arranged between the bottom circular arc recessed portion and the top circular arc recessed portion.

[0043] In specific implementation, the bottom waterproof roll layer 13 is two layers.

[0044] In this embodiment, one end of the bottom waterproof roll layer 13 is laid along the surface of the first concrete counter-ridge 7 and extends to above the insulation layer of the first substrate 1, and the other end of the bottom waterproof roll layer 13 is laid along the surface of the second concrete counter-ridge 9 and extends to above the insulation layer of the second substrate 2.

[0045] In actual use, when laying the bottom waterproof roll layer 13, the bottom waterproof roll layer 13 is located at the bottom of the first groove and is laid close to the horizontal upper edge 12-3.

[0046] In this embodiment, the bottom waterproof roll layer 13 is fixed between the portion located on the top of the first concrete counter-ridge 7 and the first concrete counter-ridge 7 by an anchor bolt 16 .

[0047] In actual use, the anchor bolt 16 is an expansion anchor bolt.

[0048] In this embodiment, one side of the top additional waterproof roll layer 15 is laid along the surface of the bottom waterproof roll layer 13 and extends to the top of the first concrete counter-ridge 7, and the other side of the top additional waterproof roll layer 15 is laid along the surface of the bottom waterproof roll layer 13 and extends to the top of the second concrete counter-ridge 9.

[0049] In this embodiment, the portion of the rubber elastic body 17 located at the expansion joint 3 arches upward to form a circular arc arch, one side of the rubber elastic body 17 is laid along the surface of the top additional waterproof roll layer 15 and extends to the groove wall of a first groove, and the other side of the rubber elastic body 17 is laid along the surface of the top additional waterproof roll layer 15 and extends to the groove wall of another first groove.

[0050] During actual use, both sides of the rubber elastic body 17 are in close contact with the groove walls of the two first grooves respectively.

[0051] In this embodiment, the U-shaped steel cover plate 18 is buckled on the top of the first concrete counter-ridge 7 and the second concrete counter-ridge 9.

[0052] In actual use, one side of the U-shaped steel cover plate 18 is fixed to the concrete structure of the first concrete counter-step 7, and the other side of the U-shaped steel cover plate 18 is not fixed to the second concrete counter-step 9. The U-shaped steel cover plate 18 is spliced ​​by multiple steel plate segments along the length direction of the expansion joint 3, and the joints between the steel plates are doubly protected by welding and sealant overlap.

[0053] In this embodiment, both sides of the stone cover plate 20 are respectively arranged on the top of the first concrete counter-step 7 and the second concrete counter-step 9 , and the arc arch portion of the rubber elastic body 17 is arranged below the bottom of the stone cover plate 20 .

[0054] In actual use, the stone cover plate 20 uses a 50mm stone single slope to cover the expansion joint 3, and the stone joint is embedded with weather-resistant structural sealant for sealing. The stone cover plate 20 has a 20mm*20mm groove carved on its back along the length direction.

[0055] During the actual construction of the present invention, nails or expansion tubes are first used to fix the fire barrier strip 4 in the expansion joint 3, and the fire barrier strip is concave downward to form an arc. Then, the XPS insulation board is filled in the expansion joint 3 to form an insulation sealing layer 5. Then, the water collection trough 12, waterproof layer, rubber elastic body 17, U-shaped steel cover plate 18 and stone cover plate 20 are constructed in sequence. The two sides of the rubber elastic body 17 are fixedly connected to the first concrete counter-step 7 and the second concrete counter-step 9 by anchor bolts.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A concealed expansion joint for a walk-on roof, comprising an expansion joint (3) located between a first base (1) and a second base (2), characterized in that: A waterproof structural layer is provided on the top of the expansion joint (3), a fire barrier strip (4) is provided on the bottom of the expansion joint (3), a thermal insulation sealing layer (5) is filled in the expansion joint (3), a first drainage ditch (6) and a first concrete anti-ridge (7) are provided on the first base (1), a second drainage ditch (8) and a second concrete anti-ridge (9) are provided on the second base (2), a first concrete retaining wall (10) is provided between the first drainage ditch (6) and the first concrete anti-ridge (7), and a second concrete retaining wall (11) is provided between the second drainage ditch (8) and the second concrete anti-ridge (9); The waterproof structural layer comprises a water collecting trough (12), a waterproof layer, a rubber elastic body (17) and a U-shaped steel cover plate (18) arranged sequentially across the expansion joint (3) from bottom to top. A first groove is provided on the top of the first concrete anti-step (7) and the second concrete anti-step (9) on one side close to the expansion joint (3). Both sides of the water collecting trough (12) are respectively built on the bottom of the first groove of the first concrete anti-step (7) and the second concrete anti-step (9). A second groove is provided on the top of the first concrete retaining wall (10) on one side close to the first concrete anti-step (7) and the top of the second concrete retaining wall (11) on one side close to the second concrete anti-step (9). Two extruded boards (19) are provided in the second groove. Both sides of the U-shaped steel cover plate (18) are respectively inserted between the two extruded boards (19) in the second groove on the same side. A stone cover plate (20) is provided above the U-shaped steel cover plate (18). The top surface height of the stone cover plate (20) is equivalent to the top height of the roof.

2. A hidden expansion joint for a walkable roof according to claim 1, characterized in that: The water collecting trough (12) comprises a trough bottom (12-1), two oblique trough walls (12-2) and two horizontal upper edges (12-3); the bottoms of the two oblique trough walls (12-2) are respectively connected to the two sides of the trough bottom (12-1); the two horizontal upper edges (12-3) are respectively connected to the tops of the two oblique trough walls (12-2); the distance between the two oblique trough walls (12-2) increases from bottom to top; and the two horizontal upper edges (12-3) are respectively arranged in close contact with the trough bottoms of the two first grooves.

3. A hidden expansion joint for a walkable roof according to claim 2, characterized in that: The groove bottom (12-1) and the two oblique groove walls (12-2) are both located within the expansion joint (3).

4. The hidden expansion joint for a walkable roof according to claim 1, characterized in that: The waterproof layer comprises a bottom waterproof roll layer (13) and a top additional waterproof roll layer (15); a portion of the bottom waterproof roll layer (13) located at the expansion joint (3) is recessed downward to form a bottom circular arc recessed portion; a portion of the top additional waterproof roll layer (15) located at the expansion joint (3) is recessed downward to form a top circular arc recessed portion; an elastic foam rod (14) is provided between the bottom circular arc recessed portion and the top circular arc recessed portion.

5. A hidden expansion joint for a walkable roof according to claim 4, characterized in that: One end of the bottom waterproof roll layer (13) is laid along the surface of the first concrete anti-ridge (7) and extends to above the thermal insulation layer of the first base (1), and the other end of the bottom waterproof roll layer (13) is laid along the surface of the second concrete anti-ridge (9) and extends to above the thermal insulation layer of the second base (2).

6. A hidden expansion joint for a walkable roof according to claim 5, characterized in that: The bottom waterproof roll layer (13) is fixed between the portion located on the top of the first concrete counter-ridge (7) and the first concrete counter-ridge (7) via an anchor bolt (16).

7. The hidden expansion joint for a walkable roof according to claim 4, characterized in that: One side of the top additional waterproof roll layer (15) is laid along the surface of the bottom waterproof roll layer (13) and extends to the top of the first concrete anti-ridge (7), and the other side of the top additional waterproof roll layer (15) is laid along the surface of the bottom waterproof roll layer (13) and extends to the top of the second concrete anti-ridge (9).

8. The hidden expansion joint for a walkable roof according to claim 7, characterized in that: The portion of the rubber elastic body (17) located at the expansion joint (3) arches upward to form a circular arc arch portion; one side of the rubber elastic body (17) is laid along the surface of the top additional waterproof roll layer (15) and extends to the groove wall of a first groove; the other side of the rubber elastic body (17) is laid along the surface of the top additional waterproof roll layer (15) and extends to the groove wall of another first groove.

9. The hidden expansion joint for a walkable roof according to claim 1, characterized in that: The U-shaped steel cover plate (18) is buckled on the top of the first concrete counter-ridge (7) and the second concrete counter-ridge (9).

10. The hidden expansion joint for a walkable roof according to claim 8, characterized in that: Both sides of the stone cover plate (20) are respectively arranged on the top of the first concrete anti-step (7) and the second concrete anti-step (9), and the circular arc arch portion of the rubber elastic body (17) is arranged below the bottom of the stone cover plate (20).

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