Formwork-free structure of cast-in-place section at top of prefabricated outer wall

Abstract

The utility model discloses a prefabricated outer wall top cast-in-place section formwork-erecting-free structure which comprises a prefabricated outer wall plate and a prefabricated laminated plate in lap joint with the inner side of the upper end of the prefabricated outer wall plate, the prefabricated outer wall plate comprises an outer wall body and a UHPC wall top at the upper end of the outer wall body, the UHPC wall top is in a right angle shape and comprises a horizontal connecting plate and a vertical flanging plate, and the horizontal connecting plate is connected with the vertical flanging plate. The horizontal connecting plate is connected with the upper end of the outer wall main body, the prefabricated laminated plate is partially lapped on the horizontal connecting plate, an outer wall cast-in-place section is constructed between the vertical flanged plate and the prefabricated laminated plate, the vertical flanged plate serves as a non-dismantling formwork of the outer wall cast-in-place section, and a cast-in-place floor is constructed on the prefabricated laminated plate. According to the utility model, an end template of a cast-in-place floor is omitted, the construction efficiency of the cast-in-place floor is improved, the construction period is shortened, the cost is reduced, the working procedures are simplified, and the completeness, waterproofness and heat preservation of a building outer wall are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to building engineering technical field especially relates to a prefabricated outer wall top cast-in-place segment formwork free construction. BACKGROUND

[0002] In the fabricated building, in order to improve construction efficiency, the prefabricated composite slab and cast-in-place layer are combined during floor slab construction, and the end surface outside of the floor slab cast-in-place layer and the outer wall node needs to be installed with the formwork of cast-in-place layer to ensure the construction quality and the accuracy of construction position during floor slab construction, the use of formwork increases material cost and labor cost, prolongs construction period, and the dismounting process of formwork is easy to cause operation to the outer wall, which affects the waterproof performance, thermal insulation performance and integrity of the outer wall. SUMMARY

[0003] The utility model discloses a prefabricated outer wall top cast-in-place segment formwork free construction to solve the problem of high cost, long construction period and easy damage to the outer wall caused by installing formwork at the outer wall node of the floor slab cast-in-place layer.

[0004] To solve the above technical problem, the utility model provides a technical scheme: a prefabricated outer wall top cast-in-place segment formwork free construction, which comprises vertically distributed prefabricated outer wall panels, prefabricated composite slabs horizontally lapped on the inner side of the upper end of the prefabricated outer wall panels, the prefabricated outer wall panels comprise an outer wall main body of ordinary concrete structure and a UHPC wall top at the upper end of the outer wall main body, the UHPC wall top is of a right-angle type, the UHPC wall top comprises a horizontally connected plate and a vertically turned plate in an integral structure, the horizontally connected plate is connected with the upper end of the outer wall main body, the prefabricated composite slabs are partially lapped on the horizontally connected plate, an outer wall cast-in-place segment is constructed between the vertically turned plate and the prefabricated composite slabs, the vertically turned plate serves as a formwork free template for the outer wall cast-in-place segment, and a cast-in-place floor slab is constructed on the prefabricated composite slabs.

[0005] Further, the prefabricated outer wall top cast-in-place segment formwork free construction provided by the utility model comprises inner top steel bars, and the inner top steel bars are implanted into the outer wall main body.

[0006] Further, the prefabricated outer wall top cast-in-place segment formwork free construction provided by the utility model comprises inner top steel bars, and the inner top steel bars are implanted into the outer wall main body.

[0007] Further, the prefabricated outer wall top cast-in-place segment formwork free construction provided by the utility model comprises inner top steel bars, and the inner top steel bars are implanted into the outer wall main body.

[0008] Further, the prefabricated outer wall top cast-in-place segment formwork free construction provided by the utility model comprises inner top steel bars, and the inner top steel bars are implanted into the outer wall main body.

[0009] Further, the prefabricated outer wall top cast-in-place segment formwork-free structure provided by the utility model is constructed by using the high strength, high toughness and excellent durability characteristics of the ultra-high performance concrete of the UHPC wall top, the vertical flanging plate of the UHPC wall top is used as the formwork-free formwork of the cast-in-place segment of the outer wall, thereby when the cast-in-place segment of the outer wall and the cast-in-situ floor slab are constructed, the installation and removal process of the outer formwork at the cast-in-place segment of the outer wall is omitted, thereby the construction efficiency of the cast-in-place segment of the outer wall and the cast-in-situ floor slab constructed together is improved, the construction period is shortened, the material cost and labor cost when the formwork of the cast-in-place segment of the outer wall is used are reduced, the process is simplified, the damage to the prefabricated outer wall panel in the formwork dismounting process is avoided, and the integrity, waterproofness and thermal insulation of the building outer wall are ensured.

[0010] Further, the prefabricated outer wall top cast-in-place segment formwork-free structure provided by the utility model is constructed by using the high strength, high toughness and excellent durability characteristics of the ultra-high performance concrete of the UHPC wall top, the vertical flanging plate of the UHPC wall top is used as the formwork-free formwork of the cast-in-place segment of the outer wall, thereby when the cast-in-place segment of the outer wall and the cast-in-situ floor slab are constructed, the installation and removal process of the outer formwork at the cast-in-place segment of the outer wall is omitted, thereby the construction efficiency of the cast-in-place segment of the outer wall and the cast-in-situ floor slab constructed together is improved, the construction period is shortened, the material cost and labor cost when the formwork of the cast-in-place segment of the outer wall is used are reduced, the process is simplified, the damage to the prefabricated outer wall panel in the formwork dismounting process is avoided, and the integrity, waterproofness and thermal insulation of the building outer wall are ensured.

[0011] Compared with the prior art, the prefabricated outer wall top cast-in-place segment formwork-free structure provided by the utility model has the following beneficial effects:

[0012] The prefabricated outer wall top cast-in-place segment formwork-free structure provided by the utility model is constructed by using the high strength, high toughness and excellent durability characteristics of the ultra-high performance concrete of the UHPC wall top, the vertical flanging plate of the UHPC wall top is used as the formwork-free formwork of the cast-in-place segment of the outer wall, thereby when the cast-in-place segment of the outer wall and the cast-in-situ floor slab are constructed, the installation and removal process of the outer formwork at the cast-in-place segment of the outer wall is omitted, thereby the construction efficiency of the cast-in-place segment of the outer wall and the cast-in-situ floor slab constructed together is improved, the construction period is shortened, the material cost and labor cost when the formwork of the cast-in-place segment of the outer wall is used are reduced, the process is simplified, the damage to the prefabricated outer wall panel in the formwork dismounting process is avoided, and the integrity, waterproofness and thermal insulation of the building outer wall are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structure schematic view of the UHPC wall top;

[0014] Figure 2 is a structure schematic view of the prefabricated outer wall panel;

[0015] Figure 3 is a structure schematic view of the prefabricated outer wall panel on which the prefabricated laminated panel is hoisted and connected;

[0016] Figure 4 is a structure schematic view of the cast-in-situ floor slab constructed by using the vertical flanging plate of the UHPC wall top as the formwork-free formwork of the cast-in-situ floor slab;

[0017] The prefabricated outer wall top cast-in-place segment formwork-free structure is constructed by using the high strength, high toughness and excellent durability characteristics of the ultra-high performance concrete of the UHPC wall top, the vertical flanging plate of the UHPC wall top is used as the formwork-free formwork of the cast-in-place segment of the outer wall, thereby when the cast-in-place segment of the outer wall and the cast-in-situ floor slab are constructed, the installation and removal process of the outer formwork at the cast-in-place segment of the outer wall is omitted, thereby the construction efficiency of the cast-in-place segment of the outer wall and the cast-in-situ floor slab constructed together is improved, the construction period is shortened, the material cost and labor cost when the formwork of the cast-in-place segment of the outer wall is used are reduced, the process is simplified, the damage to the prefabricated outer wall panel in the formwork dismounting process is avoided, and the integrity, waterproofness and thermal insulation of the building outer wall are ensured.

[0018] 10、prefabricated outer wall top cast-in-place segment formwork-free structure;

[0019] 100、prefabricated outer wall panel, 110、outer wall main body, 111、reinforced concrete structure, 112、sandwich thermal insulation layer, 113、connecting piece, 120、UHPC wall top, 121、horizontal connecting plate, 122、vertical flanging plate, 123、inner steel bar, 130、cast-in-place segment of outer wall;

[0020] 200, floor, 210, prefabricated composite slab, 220, cast-in-place floor. DETAILED DESCRIPTION

[0021] The utility model will be described in detail below in combination with the drawings: the advantages and features of the utility model will be more clear according to the following description. It should be noted that the drawings are all very simplified and all use non-precise scale, only to facilitate, clear and assist the purpose of explaining the utility model embodiment.

[0022] Please refer to Figures 1 to 4 The utility model embodiment provides a prefabricated outer wall top cast-in-place section formwork 10, including the prefabricated outer wall slab 100 of vertical distribution, the prefabricated composite slab 210 of horizontal lap in the inner side of the prefabricated outer wall slab 100 upper end, the prefabricated outer wall slab 100 includes the outer wall main body 110 of ordinary concrete structure and the UHPC wall top 120 of its upper end, the UHPC wall top 120 is right angle type, the UHPC wall top 120 includes the vertical flanging plate 122 of integral structure's horizontal link plate 121, and the horizontal link plate 121 is connected with the upper end of outer wall main body 110, the prefabricated composite slab 210 is partially lapped on the horizontal link plate 121, the vertical flanging plate 122 is constructed with the prefabricated composite slab 210 between outer wall cast-in-place section 130, the vertical flanging plate 122 is as the formwork of outer wall cast-in-place section 130, the prefabricated composite slab 210 is constructed with cast-in-place floor 220. Wherein UHPC is ultra-high performance concrete. Wherein the coincident part of outer wall cast-in-place section 130 and cast-in-place floor 220 node is the common cast-in-place structure, wherein the common cast-in-place structure is the outer wall cast-in-place section 130 of building outer wall, also is the end cast-in-place section of cast-in-place floor 220. When pouring construction, outer wall cast-in-place section and cast-in-place floor are poured together, realize the formwork-free technology of outer wall cast-in-place section 130 pouring construction.

[0023] Please refer to Figure 4 The prefabricated outer wall top cast-in-place section formwork 10 provided by the utility model embodiment utilizes the high strength, high toughness and excellent durability characteristics of the ultra-high performance concrete of the UHPC wall top 120, uses the vertical flanging plate 122 of the UHPC wall top 120 as the formwork of the outer wall cast-in-place section 130, thereby when constructing the outer wall cast-in-place section 130 and the cast-in-place floor 220, the installation and removal process of the outer formwork at the outer wall cast-in-place section 130 is eliminated, thereby improving the construction efficiency of the outer wall cast-in-place section 130 and the cast-in-place floor 220 constructed together, shortening the construction period, reducing the material cost and labor cost when using the formwork of the outer wall cast-in-place section 130, simplifying the process, avoiding the damage to the prefabricated outer wall slab 100 in the formwork disassembly process, and ensuring the integrity, waterproofness and thermal insulation of the building outer wall.

[0024] Please refer to Figure 2The prefabricated outer wall top cast-in-place segment free-forming structure 10 provided by the embodiment of the utility model can increase the connecting area of the upper end face of the UHPC wall top 120 and the outer wall main body 110 through the horizontal connecting plate 121, thereby improving the reliable connection of the UHPC wall top 120 and the outer wall main body 110, and making the two form an integral structure. In order to ensure the connecting strength, the UHPC wall top 120 comprises the top inner steel bar 123 which is implanted into the outer wall main body 110. In order to further improve the connecting strength of the two, the section of the top inner steel bar 123 is h-shaped. Therefore, the density of the top inner steel bar 123 implanted into the UHPC wall top 120 and the outer wall main body 100 is increased, and the reliability and the connecting strength of the two are improved. The UHPC wall top 120 and the outer wall main body 110 of the prefabricated outer wall plate 100 are pre-fabricated and constructed in a factory, the UHPC wall top 120 can be constructed first, then the outer wall main body 110 is constructed through a mold, and the UHPC wall top 120 is poured together.

[0025] Please refer to Figure 1 In order to facilitate processing and manufacturing, the prefabricated outer wall top cast-in-place segment free-forming structure 10 provided by the embodiment of the utility model has the same thickness of the horizontal connecting plate 121 and the vertical flanging plate 122.

[0026] In order to improve the strength and supporting force of the vertical flanging plate 122 as a construction mold plate of the outer wall cast-in-place segment 130, and avoid the impact force generated when pouring the cast-in-place floor 220 from causing the vertical flanging plate 122 to deform, the prefabricated outer wall top cast-in-place segment free-forming structure 10 provided by the embodiment of the utility model has the thickness of the vertical flanging plate 122 being greater than the thickness of the horizontal connecting plate 121.

[0027] Please refer to Figures 2 to 4 The prefabricated outer wall top cast-in-place segment free-forming structure 10 provided by the embodiment of the utility model comprises a steel reinforced concrete structure 111 and an embedded sandwich thermal insulation layer 112 in the steel reinforced concrete structure 111, the upper end of the sandwich thermal insulation layer 112 is flush with the upper end face of the steel reinforced concrete structure 111, and the other end face of the sandwich thermal insulation layer 112 is located in the steel reinforced concrete structure 111. The extension of the sandwich thermal insulation layer 112 to the upper end face of the steel reinforced concrete structure 111 can reduce the cold bridge phenomenon of the building outer wall and improve the thermal insulation performance. In order to improve the reliable connection of the sandwich thermal insulation layer 112 in the steel reinforced concrete structure 111, the sandwich thermal insulation layer 112 is anchored on the steel bars of the steel reinforced concrete structure 111 through the vertical connecting piece 113.

[0028] The utility model is not limited to the above specific embodiment, obviously, the above described embodiment is a part of the utility model embodiment, but not all the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art belong to the range of the utility model protection. The skilled in the art can make other levels of modification and change to the utility model. Thus, if these modifications and changes of the utility model are within the scope of the claims of the utility model, the utility model also intends to include these changes and variations.

Claims

1. A precast outer wall top cast-in-place segment formwork construction, characterized in that, The prefabricated outer wall plate includes an outer wall body of a common concrete structure and a UHPC wall top at the upper end of the outer wall body, the UHPC wall top is of a right-angle type, the UHPC wall top includes a horizontally connected plate and a vertically turned plate in an integrated structure, the horizontally connected plate is connected with the upper end of the outer wall body, the prefabricated composite plate is partially connected on the horizontally connected plate, and an outer wall cast-in-place section is constructed between the vertically turned plate and the prefabricated composite plate, the vertically turned plate serves as a formwork of the outer wall cast-in-place section, and the prefabricated composite plate is constructed with a cast-in-place floor slab.

2. The precast outer wall top cast-in-place segment formwork construction according to claim 1, characterized in that, The UHPC wall top includes inner top steel bars embedded in the outer wall body.

3. The precast outer wall top cast-in-place segment formwork construction according to claim 2, characterized in that, The cross section of the inner top steel bars is h-shaped.

4. The precast outer wall top cast-in-place segment formwork construction according to claim 1, characterized in that, The horizontally connected plate and the vertically turned plate have the same thickness.

5. The precast outer wall top cast-in-place segment formwork construction according to claim 1, characterized in that, The vertically turned plate has a thickness greater than that of the horizontally connected plate.

6. The precast outer wall top cast-in-place segment formwork construction according to claim 1, characterized in that, The outer wall body includes a reinforced concrete structure and a sandwich thermal insulation layer embedded in the reinforced concrete structure, the upper end of the sandwich thermal insulation layer is flush with the upper end surface of the reinforced concrete structure, and the other end surfaces of the sandwich thermal insulation layer are located in the reinforced concrete structure.

7. The precast outer wall top cast-in-place segment formwork construction according to claim 6, characterized in that, The sandwich thermal insulation layer is anchored on the steel bars of the reinforced concrete structure through a connecting piece vertically penetrating the sandwich thermal insulation layer.

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