Net rack laminated wall structure for reducing cold bridge
By using tie rods and sleeves in composite walls, combined with limiting and fixing bars, the problem of cold bridging in composite walls is solved, and the thermal insulation performance and structural strength of buildings are improved.
Patent Information
- Application Number
- CN202422987124.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-05
AI Technical Summary
During the fabrication process of composite walls, the tie rods passing through the insulation board form cold bridges, affecting the building's thermal insulation performance.
The tie rod consists of a through-wall rod and a through-wall sleeve. The through-wall rod and the sleeve are threaded together, and there is space between the connection end and the deep part of the sleeve to reduce the heat transfer path. Low heat transfer materials such as wood or plastic are used as sleeves, and limiting ribs and fixing ribs are combined to enhance the overall structure.
The cold bridge area was reduced, the building's thermal insulation performance was improved, and the structural strength and thermal insulation effect were further optimized by adjusting the width of the cast-in-place layer and setting up a base plate.
Smart Images
Figure CN223608029U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to building technical field, concretely relates to a kind of net rack composite wall structure of cold bridge reduction. BACKGROUND
[0002] Composite wall is a kind of semi-precast wall, mainly applied in fabricated building, during preparation process of composite wall, it is usually prefabricated in factory one concrete layer, then positioning, erecting support formwork on site, then put into insulation board and steel mesh frame, cast-in-situ concrete into the cast-in-place layer built, form second concrete layer, form composite wall after form removal.
[0003] During preparation process of composite wall, it needs to adopt tie member to play supporting role when erecting support formwork, but tie member needs to pass through insulation board and form cold bridge, to affect the thermal insulation performance of building. UTILITY MODEL CONTENTS
[0004] In order to solve the problems existing in the prior art, the utility model provides a kind of net rack composite wall structure of cold bridge reduction, wherein tie member is composed of wall-penetrating rod and wall-penetrating sleeve, space is left between the end of wall-penetrating rod and the deepest part of the barrel cavity of wall-penetrating sleeve, after heat is transferred to connecting end along the abutting end of wall-penetrating rod, it can only continue to transfer along the thin barrel wall of wall-penetrating sleeve, the area of cold bridge is reduced, thereby the effect of reducing cold bridge is achieved, and the thermal insulation performance of building is improved.
[0005] The specific technical scheme adopted by the utility model is as follows:
[0006] A kind of net rack composite wall structure of cold bridge reduction, including prefabricated concrete layer, formwork and insulation layer, the insulation layer is located between prefabricated concrete layer and formwork, the formwork and insulation layer are spaced apart and form cast-in-place layer between the formwork and insulation layer, the formwork and prefabricated concrete layer are also provided with tie member passing through insulation layer and cast-in-place layer, the two ends of tie member are respectively in abutment with formwork and prefabricated concrete layer, the tie member includes wall-penetrating rod and wall-penetrating sleeve, the connecting end of wall-penetrating rod and the barrel cavity of wall-penetrating sleeve are matched and threadedly connected, the gap between the connecting end of wall-penetrating rod and the deep end of barrel cavity of wall-penetrating sleeve forms a barrier chamber.
[0007] The abutting end of the wall-penetrating rod is in abutment with the inner side of the formwork, and the abutting end of the wall-penetrating sleeve is located inside the prefabricated concrete layer and in abutment with the outer side edge of the prefabricated concrete layer.
[0008] The two sides of the heat preservation layer are respectively provided with a first steel mesh frame and a second steel mesh frame, the first steel mesh frame is located in the cast-in-place layer, the second steel mesh frame is located in the prefabricated concrete layer, a fixing bar is connected between the first steel mesh frame and the second steel mesh frame, the fixing bar passes through the heat preservation layer along the horizontal direction, and the two ends of the fixing bar are respectively bound and fixed with the first steel mesh frame and the second steel mesh frame.
[0009] The connecting end and the abutting end of the wall-penetrating rod are provided with a limiting part, the limiting part is provided with a limiting hole penetrating the limiting part, and a limiting bar along the vertical direction is further arranged between the wall-penetrating rod and the fixing bars adjacent to the upper side and the lower side of the wall-penetrating rod, one end of the limiting bar is bound and fixed with the fixing bar on one side of the wall-penetrating rod, and the other end of the limiting bar passes through the wall-penetrating rod along the limiting hole and is bound and fixed with the fixing bar on the other side of the wall-penetrating rod.
[0010] The limiting part is provided with a plurality of groups of limiting holes in a ring array with the axis of the wall-penetrating rod as the center.
[0011] The beneficial effects of the present application are as follows:
[0012] The connecting end of the wall-penetrating rod is provided with external threads, the inner wall of the barrel cavity of the wall-penetrating sleeve is provided with internal threads matched with the external threads, the wall-penetrating rod is threadedly matched with the wall-penetrating sleeve by means of the internal and external threads, and a space is left between the end of the wall-penetrating rod and the deepest part of the barrel cavity of the wall-penetrating sleeve, so that heat is only transmitted along the thinner barrel wall of the wall-penetrating sleeve after being transmitted to the connecting end from the abutting end of the wall-penetrating rod, the cold bridge area is reduced, and the heat preservation performance of the building is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The present application is a structural schematic view;
[0014] Figure 2 The present application is a structural schematic view of the wall-penetrating rod;
[0015] In the drawings, 1 is a prefabricated concrete layer, 2 is a formwork, 3 is a heat preservation layer, 4 is a cast-in-place layer, 5 is a wall-penetrating rod, 6 is a wall-penetrating sleeve, 7 is a barrier chamber, 8 is a first steel mesh frame, 9 is a second steel mesh frame, 10 is a fixing bar, 11 is a limiting part, 12 is a limiting hole, 13 is a limiting bar, and 14 is a backing plate. DETAILED DESCRIPTION
[0016] The present application will be further described in combination with the drawings and specific embodiments:
[0017] The specific embodiments are as follows: Figure 1As shown in the utility model provides a kind of network frame composite wall structure of cold bridge reduction, including prefabricated concrete layer 1, formwork 2 and thermal insulation layer 3, the thermal insulation layer 3 is located between prefabricated concrete layer 1 and formwork 2, formwork 2 and thermal insulation layer 3 are spaced apart and formwork 2 and thermal insulation layer 3 between form cast-in-place layer 4, prefabricated concrete layer 1 between formwork 2 and still be provided with the tie member passing through thermal insulation layer 3 and cast-in-place layer 4, the two ends of tie member are respectively with formwork 2 and prefabricated concrete layer 1 abut, the tie member includes wall rod 5 and wall sleeve 6, the connecting end of wall rod 5 and the barrel cavity of wall sleeve 6 are matched and threadedly connected, the connecting end of wall rod 5 and the barrel cavity deep end of wall sleeve 6 are spaced apart and form gap into barrier chamber 7.
[0018] Because of the preparation process of composite wall, tie member needs to be used when erecting support formwork 2 to play a supporting role, but tie member needs to pass through insulation board and form cold bridge, thereby affecting the thermal insulation performance of building.
[0019] And the tie member in the utility model is composed of wall rod 5 and wall sleeve 6, the connecting end surface of wall rod 5 is provided with external thread, the inner wall of the barrel cavity of wall sleeve 6 is provided with internal thread matched with external thread, wall rod 5 is threadedly connected with wall sleeve 6 by means of internal and external threads, and space is left between the end of wall rod 5 and the deepest part of the barrel cavity of wall sleeve 6, which leads to that heat is transferred to the connecting end along the abutting end of wall rod 5 after being transferred along wall rod 5, can only continue to be transferred along the relatively thin barrel wall of wall sleeve 6, the cross-sectional area of cold bridge is reduced, thereby the effect of reducing cold bridge is achieved, and the thermal insulation performance of building is improved.
[0020] In addition, the abutting end of wall sleeve 6 is embedded in the process of prefabricating prefabricated concrete layer 1 in factory in the utility model, so the strength requirement of wall sleeve 6 is relatively low, so wood or plastic with relatively small heat transfer coefficient can be used as the manufacturing material of wall sleeve 6, thereby further reducing cold bridge.
[0021] At the same time, wall rod 5 and wall sleeve 6 are threadedly connected in the utility model, so the width of cast-in-place layer 4 can be adjusted according to the needs of the scene.
[0022] As shown in the utility model, Figure 1 The abutting end of wall rod 5 abuts against the inner side of formwork 2, and the abutting end of wall sleeve 6 is located inside prefabricated concrete layer 1 and abuts against the outer side edge of prefabricated concrete layer 1. In the utility model, the abutting end of wall rod 5 and the abutting end of wall sleeve 6 are both provided with a spacer plate 14 between formwork 2 and prefabricated concrete layer 1, which can play the role of reducing cold bridge and leveling.
[0023] As shown in the utility model, Figure 1As shown, the two sides of the heat preservation layer 3 are provided with a first steel bar net rack 8 and a second steel bar net rack 9 respectively, the first steel bar net rack 8 is located in the cast-in-place layer 4, the second steel bar net rack 9 is located in the prefabricated concrete layer 1, a fixing rib 10 is connected between the first steel bar net rack 8 and the second steel bar net rack 9, the fixing rib 10 penetrates the heat preservation layer 3 along the horizontal direction and the two ends of the fixing rib 10 are respectively bound and fixed with the first steel bar net rack 8 and the second steel bar net rack 9, in the utility model, the first steel bar net rack 8 can be fixed in position through the fixing rib 10, since the second steel bar net rack 9 is integrally formed with the prefabricated concrete layer 1, the position of the second steel bar net rack 9 is fixed, the fixing rib 10 penetrates the heat preservation layer 3 and is bound and fixed with the first steel bar net rack 8, so that the position of the first steel bar net rack 8 is also fixed.
[0024] As shown in the figure, Figure 1 The connecting end and the abutting end of the wall -penetrating rod 5 are provided with a limiting part 11, the limiting part 11 is provided with a limiting hole 12 penetrating the limiting part 11, the wall -penetrating rod 5 and the fixed rib 10 adjacent to the upper and lower sides are further provided with a limiting rib 13 along the vertical direction, one end of the limiting rib 13 is bound and fixed with the fixed rib 10 on one side of the wall -penetrating rod 5, the other end of the limiting rib 13 penetrates the wall -penetrating rod 5 along the limiting hole 12 and is bound and fixed with the fixed rib 10 on the other side of the wall -penetrating rod 5. In the utility model, the limiting rib 13 is further provided, the pull member and the fixed rib 10 on the upper and lower sides are connected to form a whole through the limiting rib 13, further guarantee the integrity and structural strength inside the composite wall body.
[0025] As shown in the figure, Figure 2 The limiting part 11 is provided with a plurality of groups of limiting holes 12 in a ring array with the axis of the wall -penetrating rod 5 as the center, since the wall -penetrating rod 5 needs to be continuously rotated in the process of being connected with the wall -penetrating sleeve 6, so the limiting hole 12 cannot be guaranteed to be along the vertical direction, therefore a plurality of groups of limiting holes 12 are provided, even if the plurality of groups of limiting holes 12 are not all in the vertical direction, but through slightly rotating the wall -penetrating rod 5 to fine-tune, the adjacent limiting holes 12 can be located in the vertical direction under the premise of not affecting the building parameter requirement.
Claims
1. A space truss composite wall structure with cold bridge reduction, comprising a prefabricated concrete layer (1), a formwork (2) and a thermal insulation layer (3), the thermal insulation layer (3) being located between the prefabricated concrete layer (1) and the formwork (2), the formwork (2) being spaced apart from the thermal insulation layer (3) and a cast-in-place layer (4) being formed between the formwork (2) and the thermal insulation layer (3), a tie member being further provided between the formwork (2) and the prefabricated concrete layer (1) and passing through the thermal insulation layer (3) and the cast-in-place layer (4), the two ends of the tie member being respectively in abutment with the formwork (2) and the prefabricated concrete layer (1), characterized in that, The tie member comprises a wall-penetrating rod (5) and a wall-penetrating sleeve (6), the connecting end of the wall-penetrating rod (5) and the sleeve cavity of the wall-penetrating sleeve (6) are matched and threadedly connected, and the gap between the connecting end of the wall-penetrating rod (5) and the deep end of the sleeve cavity of the wall-penetrating sleeve (6) forms a blocking chamber (7).
2. The web frame composite wall structure of claim 1, wherein, The abutting end of the wall-penetrating rod (5) abuts against the inner side of the formwork (2), and the abutting end of the wall-penetrating sleeve (6) is located inside the prefabricated concrete layer (1) and abuts against the outer side edge of the prefabricated concrete layer (1).
3. The web frame composite wall structure of claim 1, wherein, The two sides of the thermal insulation layer (3) are respectively provided with a first steel mesh frame (8) and a second steel mesh frame (9), the first steel mesh frame (8) is located in the cast-in-place layer (4), the second steel mesh frame (9) is located in the prefabricated concrete layer (1), a fixing rib (10) is connected between the first steel mesh frame (8) and the second steel mesh frame (9), the fixing rib (10) passes through the thermal insulation layer (3) in the horizontal direction, and the two ends of the fixing rib (10) are respectively bound and fixed with the first steel mesh frame (8) and the second steel mesh frame (9).
4. The web frame composite wall structure of claim 3, wherein, A limiting part (11) is arranged between the connecting end and the abutting end of the wall-penetrating rod (5), the limiting part (11) is provided with a limiting hole (12) penetrating the limiting part (11), and a limiting rib (13) in the vertical direction is further arranged between the wall-penetrating rod (5) and the fixing rib (10) adjacent to the upper and lower sides, one end of the limiting rib (13) is bound and fixed with the fixing rib (10) on one side of the wall-penetrating rod (5), the other end of the limiting rib (13) passes through the wall-penetrating rod (5) along the limiting hole (12) and is bound and fixed with the fixing rib (10) on the other side of the wall-penetrating rod (5).
5. The web frame composite wall structure of claim 4, wherein, The limiting part (11) is arranged in a ring array with the axis of the wall-penetrating rod (5) as the center and is provided with multiple groups of limiting holes (12).