A leakproof slipform formwork structure suitable for use between prefabricated wall panels and horizontal members

Abstract

The utility model discloses a kind of anti-leakage paste template structures suitable for between prefabricated wallboard and horizontal component, including aluminium square, aluminium square upper end side surface and prefabricated wallboard are attached, lower end surface and horizontal component are attached, the lower end surface of aluminium square is provided with sealing groove, sealing strip is set in sealing groove.Using aluminium square as cast-in-place form between prefabricated wallboard and horizontal component, light in weight, high in strength, anticorrosion, simple structure, can be reused;Sealing strip is set in the sealing groove of the lower end surface of aluminium square template, eliminate the gap between template bottom and horizontal component, seal is tight, no leakage, ensure the compactness of on-site concrete pouring, sealing strip in sealing groove is replaced conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building construction, specifically relating to a grout-proof template suitable for use between prefabricated wall panels and horizontal components. Background Technology

[0002] EMC precast wall panels are a type of reinforced concrete precast wall panel. They consist of internal corrugated metal tubes forming a continuous cavity. Prefabricated in a factory, they are then transported to the construction site for assembly. Large-diameter steel bars are threaded through the cavity and mechanically connected to form a stable steel reinforcement framework. After the wall panel is installed, concrete is poured into the cavity to form a composite shear wall with high strength and good seismic performance. During on-site installation, a 50-70 mm gap is left between the bottom of the EMC precast wall panel and the horizontal structural member (such as a floor), serving as the cast-in-place joint between the precast wall panel and the horizontal member. Under the pressure of the concrete, the rigidity and stability of the cast-in-place formwork between the bottom of the EMC precast wall panel and the horizontal member are particularly important. It is crucial to ensure both the density of the concrete at the connection point and the flatness and verticality requirements of the final finished product.

[0003] In existing technologies, vertical gaps between EMC precast wall panels and horizontal components are generally sealed using traditional support formwork methods, employing glued laminated timber formwork. The formwork height should be flush with the top edge of the EMC precast wall panel. Wooden formwork requires on-site fabrication, is cumbersome to install, prone to deformation and grout leakage, generates waste, is environmentally unfriendly, and wastes labor costs.

[0004] Chinese Patent Application No. 201620318108X discloses a cast-in-place formwork for precast wall panels and vertical components, comprising: a formwork, the front of which is a flat surface that fits against the precast wall panel; a frame, installed on the formwork and forming a sealing groove with its end face facing the front of the formwork; wherein, a sealing element is provided in the sealing groove or the sealing groove is filled with sealant; and a back rib, which is horizontally arranged on the back of the formwork, with multiple reinforcing ribs between the back rib and the back of the formwork; each back rib is fixed to the formwork by a tie rod. The above formwork assembly is only suitable for cast-in-place joints between precast wall panels and vertical components, and not for cast-in-place joints between precast wall panels and horizontal components. Furthermore, it suffers from numerous structural components, complex assembly, and time-consuming on-site construction. Summary of the Invention

[0005] To address the issues that template components are not suitable for cast-in-place joints between precast wall panels and horizontal components, and that involve numerous structural parts, complex assembly, and time-consuming on-site construction, this utility model provides a leak-proof template suitable for use between precast wall panels and horizontal components.

[0006] The purpose of this utility model is achieved in the following way: a grout-proof template structure suitable for the gap between precast wall panels and horizontal components, including an aluminum square tube, the upper side of which is attached to the precast wall panel and the lower side of which is attached to the horizontal component, a sealing groove is provided on the lower side of the aluminum square tube, and a sealing strip is provided in the sealing groove.

[0007] Horizontal components include ground surfaces, roof surfaces, cast-in-place floor slabs, composite floor slabs, or precast floor slabs.

[0008] An aluminum square tube is installed on each side of the precast wall panel, and the two aluminum square tubes are connected by tie bolts.

[0009] A support is installed between the two aluminum square tubes near the horizontal component.

[0010] Compared with existing technologies, this utility model uses aluminum square tubes as cast-in-place templates between precast wall panels and horizontal components. It is lightweight, high-strength, corrosion-resistant, simple in structure, and reusable. A sealing strip is installed in the sealing groove on the lower end face of the aluminum square tube template, which eliminates the gap between the bottom of the template and the horizontal component, ensuring a tight seal and preventing grout leakage. This ensures the density of the concrete pouring on site, and the sealing strip in the sealing groove is easy to replace. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 is a schematic diagram of the cross-sectional structure of aluminum square tube.

[0013] In the diagram: 1 - precast wall panel, 2 - aluminum square tube, 3 - horizontal component, 4 - sealing strip, 5 - tie bolt, 6 - support component, 7 - sealing groove. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various modifications or alterations to the present invention, and these equivalent forms also fall within the scope defined by the present invention.

[0015] like Figure 1 As shown, a grout-proof template structure suitable for use between precast wall panels and horizontal components includes an aluminum square tube 2. The upper side of the aluminum square tube 2 is attached to the precast wall panel 1, and the lower side is attached to the horizontal component 3. A sealing groove 7 is provided on the lower side of the aluminum square tube 2, and a sealing strip 4 is provided in the sealing groove.

[0016] As shown in Figure 2, a sealing groove 7 is provided on one end face of the aluminum square tube. This type of aluminum square tube is a mature product on the market.

[0017] Horizontal component 3 is the ground surface, roof surface, cast-in-place floor slab, composite floor slab, or precast floor slab.

[0018] An aluminum square tube 2 is installed on each side of the precast wall panel 1, and the two aluminum square tubes 2 are connected by tie bolts 5. In the preferred embodiment, the tie bolts 5 pass through the middle of the aluminum square tubes, so that the aluminum square tubes are evenly stressed and are not prone to tilting.

[0019] A further preferred solution is to install a support member 6 between the two aluminum square tubes 2 near the horizontal component to prevent them from getting too close and affecting the concrete pouring at the joint between the precast wall panel and the horizontal component. Alternatively, the support member 6 can be omitted. Before installing the aluminum square tubes 2, according to the position of the EMC precast wall panel, mark the position control line of the anti-leakage template structure between the EMC precast wall panel and the horizontal component on the horizontal component. Drive several cement nails along the control line, with the cement nails protruding a certain height to control the position of the template. Install the aluminum square tubes 2 along the control line; the cement nails can prevent the two aluminum square tubes 2 from getting too close.

[0020] Precast wall panel construction process: Measurement and layout → Axis verification → Inspection and adjustment of vertical reserved steel bars in the wall → Measurement and placement of horizontal elevation control top screw bracket → EMC precast wall panel hoisting and positioning → Correction of elevation and verticality → Installation and fixing of precast wall panel diagonal supports → Binding of steel bars in cast-in-place reinforcement areas → Treatment of EMC precast wall panel formwork joints → Overall inspection and acceptance of the formwork system → Pouring concrete for EMC precast wall panels.

[0021] Specifically, the installation of EMC precast wall panels is as follows: 1. EMC precast wall panel installation: hoisting is carried out according to the installation diagram and the established installation sequence. The upper and lower corners of the EMC precast wall panels are protected. The EMC precast wall panels are hoisted to the construction position, and large-diameter steel bars are inserted into the EMC wall corrugated pipe and slowly lowered into place.

[0022] 2. Installation of precast wall panel diagonal supports and fasteners: Each wall panel needs to be fixed with two diagonal supports. The upper part of the diagonal support is connected to the connector embedded at the upper 2 / 3 height of the wall panel by special bolts. The bottom of the diagonal support is anchored to the ground with expansion bolts to ensure stability. The angle between the support and the horizontal floor is 40°-50°.

[0023] Adjustable leveling screw brackets are pre-installed at both ends and the middle of the lower part of the EMC precast wall panel. Construction workers install diagonal supports and use a theodolite to determine the verticality and planar position of the EMC precast wall panel. After hoisting and positioning, the level of the EMC precast wall panel is adjusted using the screw nuts on the screw brackets.

[0024] III. Construction of Leak-Proof Formwork Structure between EMC Precast Wall Panels and Horizontal Components According to the design and installation position of the EMC precast wall panel, mark the control line of the bottom template position of the EMC precast wall panel on the horizontal component. Install aluminum square tubes along the control line. First, insert the sealing strip 4 into the sealing groove 7 set on the lower end face of the aluminum square tube 2. Then, press the upper side of the aluminum square tube 2 against the precast wall panel 1 and the lower end face against the horizontal component 3. Insert the tie bolts 5 into the two aluminum square tubes 2. The two ends of the tie bolts 5 protrude from the aluminum square tubes 2. Tighten the nuts. The anti-leakage template structure between the EMC precast wall panel and the horizontal component is installed.

[0025] Aluminum square tubes are used as the cast-in-place formwork between precast wall panels and horizontal components. They are lightweight, high-strength, corrosion-resistant, simple in structure, and reusable. A sealing strip is installed in the sealing groove on the lower end of the aluminum square tube formwork to eliminate the gap between the bottom of the formwork and the horizontal component, ensuring a tight seal and preventing grout leakage. This ensures the density of the concrete pouring on site, and the sealing strip in the sealing groove is easy to replace. The grout leakage prevention formwork structure, composed of two aluminum square tubes 2 and tie bolts 5, is easy to assemble and saves labor costs.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A leakproof slipform formwork structure suitable for use between precast wall panels and horizontal members, characterised in that: Includes aluminum square tube (2), the upper side of the aluminum square tube (2) is attached to the precast wall panel (1), the lower side is attached to the horizontal component (3), and a sealing groove (7) is provided on the lower side of the aluminum square tube (2), and a sealing strip (4) is provided in the sealing groove.

2. The anti-leakage template structure applicable between precast wall panels and horizontal components according to claim 1, characterized in that: The horizontal components (3) are the ground, roof, cast-in-place floor slab, composite floor slab or precast floor slab.

3. A formwork structure for use in the construction of a wall panel, according to claim 1, wherein: An aluminum square tube (2) is installed on each side of the precast wall panel (1), and the two aluminum square tubes (2) are connected by tie bolts (5).

4. The anti-leakage template structure applicable between precast wall panels and horizontal components according to claim 3, characterized in that: A support member (6) is installed between the two aluminum square tubes (2) near the horizontal component.

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