Super-close-distance parallel double-shear-wall formwork structure

Abstract

The utility model belongs to the technical field of shear wall formworks, and particularly relates to an ultra-short-distance parallel double-shear-wall formwork structure. Comprising two sets of outer formworks, the two sets of outer formworks are divided into two shear wall mold cavities through polystyrene boards, main keels and auxiliary keels are arranged on the back faces of the outer formworks, and the two sets of outer formworks are fixed through water stop screws; the water stop screw comprises two screw rods, the two screw rods are connected through a connecting sleeve, the connecting sleeve is nested in the polystyrene board, threads are engraved at the inner side ends of the two screw rods, the two screw rods are screwed with the connecting sleeve from sleeve openings in the two sides of the connecting sleeve respectively, and the two screw rods penetrate out of the outer formwork to be connected with the E-shaped piece and the E-shaped nut to tension the main keel; the problem that the distance between every two adjacent shear walls is narrow, and formwork erecting cannot be achieved is effectively solved, the formwork erecting process is simplified through the design that the two sets of outer formworks and the polystyrene boards are separated, the problem that a traditional formwork is difficult to mount and dismount in a narrow space is solved, and therefore construction efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of shear wall formwork technology, specifically relating to an ultra-close-range parallel double shear wall formwork structure. Background Technology

[0002] With social development and the advancement of urban integration, cities have seen a surge in diverse buildings. The reliability of fire protection systems is crucial to the safety of everyone's lives and property, directly impacting fire suppression effectiveness. Fire water tanks are a vital component of fire water supply systems. Due to planning reasons, fire water tanks are no longer newly built on separate sites but are instead designed into building basements. Therefore, the construction quality of the underground structure is of paramount importance. To further enhance the function of the fire water tank, the design requires that the side walls of the fire water tank not be shared with the main basement structure (the concrete grades of the fire water tank side walls and the main basement structure are different), thus forming a double shear wall, such as... Figure 1 As shown, in order to save lateral space, only 10cm of space was reserved on the side adjacent to the main basement structure of the fire water tank. The insufficient width made it difficult to support the formwork in the gap between the fire water tank and the main basement structure. However, due to the limitations of the building structure and the water storage capacity requirements of the fire water tank, it was not possible to change the design drawings to widen the gap. Utility Model Content

[0003] This invention aims to solve the problem of insufficient formwork support due to the narrow spacing between two adjacent shear walls.

[0004] This utility model provides the following technical solution: a formwork structure for ultra-close parallel double shear walls, including two sets of outer formwork, which are separated into two shear wall cavities by polystyrene boards; the thickness of the polystyrene boards is equal to the design spacing between the two shear walls; the back of the outer formwork is provided with main keel and secondary keel, and the two sets of outer formwork are fixed by water-stop bolts.

[0005] Furthermore, the water-stop screw rod includes two sections of threaded rod, which are connected by a connector. The connector is nested inside the polystyrene board, and the two sections of threaded rod pass through the outer template to connect the mountain-shaped part and the mountain-shaped nut to tighten the main keel.

[0006] Furthermore, the connector is a connecting sleeve with threads engraved inside both cylinder openings. The threads inside the two cylinder openings of the connecting sleeve turn in opposite directions. The inner ends of the two screw rods are engraved with threads, and the two screw rods are screwed into the connecting sleeve from the two cylinder openings of the connecting sleeve respectively.

[0007] Furthermore, both sections of the lead screw are fixed with water-stop rings.

[0008] Furthermore, the length of the connecting sleeve is equal to the thickness of the polystyrene board.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] This utility model provides an ultra-close parallel double shear wall formwork structure, which effectively solves the problem of insufficient formwork support due to the narrow spacing between adjacent shear walls. By adopting a design with two sets of outer formwork and polystyrene board separation, the formwork support process is simplified, avoiding the difficulty of installing and disassembling traditional formwork in narrow spaces, thereby improving construction efficiency. The threaded rod is divided into two sections, each with a water-stop ring installed. The two water-stop rings are located inside the two adjacent shear walls to prevent water seepage. If the threaded rod is a single rod, one of the water-stop rings would have to pass through the polystyrene board, leaving a large gap in the polystyrene board. A connecting sleeve is used to connect the two sections of the threaded rod on both sides of the polystyrene board, effectively isolating the formwork cavities of the two shear walls and preventing grout leakage during pouring. This formwork structure is reasonably designed, easy to operate, and will not affect the subsequent construction of construction joints and expansion joints, providing a strong guarantee for the smooth progress of the entire project. Attached Figure Description

[0011] Figure 1 This is a schematic diagram showing the location of the fire water tank and the main basement structure.

[0012] Figure 2 This is a schematic diagram of a formwork structure for ultra-close parallel double shear walls.

[0013] In the diagram: 1-Side wall of fire water tank; 2-Main body of basement; 3-Threaded rod; 4-Hill-shaped nut; 5-Hill-shaped component; 6-Main keel; 7-Secondary keel; 8-Connecting sleeve; 9-Polystyrene board; 10-Waterstop ring; 11-Outer formwork. Detailed Implementation

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] like Figure 2 As shown: A formwork structure for ultra-close parallel double shear walls includes two sets of outer formwork 11, which are separated into two shear wall cavities by polystyrene board 9; the thickness of polystyrene board 9 is equal to the design spacing between the two shear walls; the back of the outer formwork 11 is provided with main keel 6 and secondary keel 7, and the two sets of outer formwork 11 are fixed together by water-stop bolts.

[0016] The water-stop screw rod includes two sections of threaded rod 3, which are connected by a connector. The connector is nested inside the polystyrene board 9. The two sections of threaded rod 3 pass through the outer template 11 and connect the mountain-shaped part 5 and the mountain-shaped nut 4 to tighten the main keel 6.

[0017] The connector is a connecting sleeve 8 with threads engraved inside both sides of the sleeve opening. The threads inside the two sides of the sleeve 8 turn in opposite directions. The inner ends of the two screw rods 3 are threaded. The two screw rods 3 are screwed into the connecting sleeve 8 from both sides of the sleeve opening.

[0018] Both sections of the screw rod 3 are fixed with water-stop rings 10. After the water-stop screw rod is installed, the two water-stop rings 10 are located in the fire water tank wall and the basement main wall respectively to prevent water seepage.

[0019] The lead screw 3 is a common water-stop screw. After cutting off the lead screw of the common water-stop screw, a section with the water-stop ring 10 is left, and then the cut end is threaded.

[0020] The length of the connecting sleeve 8 is equal to the thickness of the polystyrene board 9.

[0021] During formwork erection, after the reinforcement of the fire water tank wall and the basement main wall is tied, a polystyrene board 9 embedded in the connecting sleeve 8 is placed in. Two threaded rods 3 are connected to the connecting sleeve 8 from both sides. The threads on the two threaded rods 3 turn in opposite directions, so rotating the two threaded rods 3 in the opposite direction tightens them to the connecting sleeve 8. Then, the outer formwork 11, secondary keel 7, and main keel 6 on both sides are installed, and the gable-shaped piece 5 is fitted on and locked with the gable-shaped nut 4. After the concrete has solidified, the main keel 6, secondary keel 7, and outer formwork 11 are removed, and the excess parts of the threaded rods 3 are cut off. The polystyrene board 9 remains between the fire water tank wall and the basement main wall. During concrete pouring, the polystyrene board 9 acts as formwork; after the concrete solidifies, the polystyrene board 9 improves the waterproofing effect between the walls.

[0022] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultra-close-range parallel double-shear wall formwork structure, characterized by: The two sets of outer templates (11) are separated by polystyrene boards (9) into two cavities of shear walls, the thickness of the polystyrene boards (9) is equal to the designed distance between the two shear walls, the back of the outer templates (11) is provided with main and vice keels (6, 7), and the two sets of outer templates (11) are fixed by water stop screws.

2. The ultra-close parallel double-shear wall formwork structure according to claim 1, characterized in that: The water stop screw comprises two sections of screw rods (3), the two sections of screw rods (3) are connected by a connecting piece, the connecting piece is nested in the polystyrene board (9), and the two sections of screw rods (3) are connected with the mountain-shaped male (5) and the mountain-shaped female (4) to tighten the main keel (6) by penetrating out of the outer template (11).

3. The ultra-close parallel double-shear wall formwork structure according to claim 2, characterized in that: The connecting piece is a connecting sleeve (8) with threads engraved on both side openings, the threads in the two side openings of the connecting sleeve (8) are opposite in rotation direction, the inner side end of the two sections of screw rods (3) is engraved with threads, and the two sections of screw rods (3) are respectively screwed with the connecting sleeve (8) from the two side openings of the connecting sleeve (8).

4. The ultra-close parallel double-shear wall formwork structure according to claim 2 or 3, characterized in that: The two sections of the screw rods (3) are respectively fixed with water stop rings (10).

5. The ultra-close parallel double-shear wall formwork structure according to claim 3, characterized in that: The length of the connecting sleeve (8) is equal to the thickness of the polystyrene board (9).

Images