Formwork-free window sill coping construction structure

Abstract

This utility model relates to the field of building construction and discloses a formwork-free window sill capping construction structure. Multiple U-shaped precast blocks are laid end-to-end in a wall to form a casting cavity. Horizontal main reinforcement and longitudinal reinforcement are cast within the casting cavity. One end of each precast block has a support block with an opening slot on its top for placing the horizontal main reinforcement. Multiple longitudinal reinforcements are placed on the horizontal main reinforcement. At least one horizontal main reinforcement has threads at both ends, and two tension nuts are screwed onto both ends of the horizontal main reinforcement, abutting against the support blocks inside the blocks at both ends of the casting cavity to tighten the multiple precast blocks. This utility model utilizes the horizontal main reinforcement and tension nuts to tighten multiple precast blocks into a single unit, effectively solving the problems of loosening and grout leakage caused by concrete vibration compared to traditional masonry methods.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a formwork-free window sill capping construction structure. Background Technology

[0002] A window sill coping refers to a concrete strip installed to prevent cracks in the masonry beneath the window. Traditional window sill coping construction involves formwork, which cannot be carried out simultaneously with wall construction and is prone to problems such as concrete bulging and leakage. With advancements in construction technology and the widespread adoption of green construction methods, a formwork-free window sill coping construction process has been designed. This involves using U-shaped precast blocks to create a pouring cavity at the designed location of the window sill coping. Main and auxiliary reinforcement bars are placed within the cavity, and the window sill coping is formed by pouring concrete. This process allows for simultaneous construction of the window sill coping and wall construction, eliminating the need for formwork and its removal, thus improving construction efficiency. However, existing formwork-free window sill coping structures have the following drawbacks:

[0003] 1. When using cement mortar to lay precast blocks together, it is essential to ensure that the cement mortar fills the gaps between the two precast blocks; otherwise, grout leakage will occur. At the same time, during the vibration of the poured concrete, the precast blocks may also loosen, leading to grout leakage.

[0004] 2. Cement mortar is used for masonry. After the masonry is completed, excess cement mortar in the pouring cavity needs to be removed to prevent affecting the pouring quality.

[0005] 3. It is difficult to ensure that the main reinforcement and auxiliary reinforcement are placed in the middle position in the casting cavity, and the auxiliary reinforcement needs to be fixed to the main reinforcement in advance.

[0006] Based on this, this application provides a formwork-free window sill capping construction structure with a more reasonable structural design and convenient construction to solve the above problems. Utility Model Content

[0007] The present invention aims to solve the technical problems existing in the prior art. To this end, the present invention provides a formwork-free window sill capping construction structure with a more reasonable structural design and convenient construction.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] A formwork-free window sill capping construction structure is provided, consisting of multiple U-shaped precast blocks laid end-to-end in the wall to form a casting cavity, with transverse main reinforcement and longitudinal reinforcement cast inside the casting cavity; one end of each precast block is provided with a support block, the top of which has an opening slot for placing the transverse main reinforcement, and multiple longitudinal reinforcements are placed on the transverse main reinforcement; both ends of each transverse main reinforcement are threaded, and two tension nuts are screwed to both ends of the transverse main reinforcement and abut against the support blocks inside the blocks at both ends of the casting cavity, for tightening the multiple precast blocks.

[0010] In some optional embodiments, the end faces of the precast blocks are provided with grooves, and a sealing strip is provided in the groove of at least one end, and the adjacent precast blocks are sealed by the sealing strip.

[0011] In some alternative embodiments, the inner walls on both sides of the precast block are provided with limiting grooves for placing longitudinal reinforcement.

[0012] In some alternative embodiments, a spring washer is also provided between the tensioning nut and the support block.

[0013] In some alternative embodiments, the precast block has support blocks at both ends.

[0014] In some alternative embodiments, the support block is an integrally formed structure with the precast block.

[0015] In some alternative implementations, the support block is an embedded part made of metal or non-metal material.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model uses transverse main bars and tension nuts to tighten multiple precast blocks into a whole, and the adjacent precast blocks are sealed by sealing strips. Compared with the traditional masonry method, it effectively solves the problem of precast blocks loosening and grout leakage caused by concrete vibration.

[0018] 2. Since cement mortar is not required to bond adjacent precast blocks, there is no need to clean the inside of the casting cavity;

[0019] 3. The transverse main reinforcement and longitudinal reinforcement are positioned by the support block and the limiting groove respectively, so it is not necessary to fix the longitudinal reinforcement to the transverse main reinforcement in advance, and it can ensure that the main reinforcement and reinforcement are in the middle position of the window sill coping. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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, wherein:

[0021] Figure 1 This is a three-dimensional structural diagram of the precast blocks provided by this utility model;

[0022] Figure 2 This is a construction status diagram of the formwork-free window sill capping construction structure provided by this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1—Precast block, 1.1—Support block, 1.1.0—Open slot, 1.2—Limiting slot, 1.3—Groove, 2—Transverse main reinforcement, 3—Longitudinal reinforcement, 4—Tightening nut, 5—Sealing strip, 6—Spring washer. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model. Example

[0029] This embodiment provides a formwork-free window sill capping construction structure, as shown in the attached figure. Figure 2 As shown, multiple precast blocks 1 with U-shaped cross-sections are laid end-to-end in the wall to form a casting cavity, and transverse main reinforcement 2 and longitudinal reinforcement 3 are cast inside the casting cavity. To address the problems associated with traditional cement mortar masonry of precast blocks, this embodiment incorporates the following optimized design:

[0030] As attached Figure 1 and attached Figure 2 As shown, one end of the precast block 1 is provided with a support block 1.1, and the top of the support block is provided with an opening slot 1.1.0 for placing the transverse main reinforcement 2. The transverse main reinforcement is placed in the opening slot of the support block, preferably with the height of the support block such that the transverse main reinforcement is located in the middle of the window sill coping. Specifically, this embodiment is provided with 2 transverse main reinforcements, and multiple longitudinal reinforcements 3 can be tied to the transverse main reinforcements.

[0031] Preferably, to facilitate the positioning of the longitudinal reinforcement, the inner walls of both sides of the precast block 1 in this embodiment are provided with limiting grooves 1.2 for placing the longitudinal reinforcement 3. Both ends of the longitudinal reinforcement 3 are placed within the limiting grooves 1.2, and after placement, the longitudinal reinforcement should be in contact with the transverse main reinforcement. This achieves the positioning of the transverse main reinforcement and the longitudinal reinforcement, ensuring the construction quality of the window sill coping. Using this positioning structure, it is unnecessary to pre-fix the longitudinal reinforcement to the transverse main reinforcement.

[0032] As attached Figure 2 As shown, at least one of the transverse main reinforcing bars 2 has threads at both ends, and two tension nuts 4 are screwed onto both ends of the transverse main reinforcing bar 3, abutting against the support blocks 1.1 inside the precast blocks at both ends of the pouring cavity, for tightening multiple precast blocks 1. This utility model utilizes the transverse main reinforcing bars and tension nuts to tighten multiple precast blocks into a single unit. To ensure the sealing between the precast blocks, this embodiment also provides grooves 1.3 on the end faces of both ends of the precast blocks 1, with a sealing strip 5 inside at least one groove 1.3, allowing adjacent precast blocks to be sealed together by the sealing strip. This design eliminates the need for cement mortar bonding between adjacent precast blocks, thus eliminating the need for cleaning the pouring cavity. Furthermore, this method avoids the problem of precast blocks loosening and grout leakage during the vibration of the poured concrete.

[0033] Preferably, in this embodiment, a spring washer 6 is also provided between the tensioning nut 4 and the support block 1.1, and the spring washer plays a role in preventing loosening.

[0034] In one embodiment, support blocks 1.1 may be provided at both ends of the precast block 1.

[0035] In one embodiment, the support block 1.1 is an integrally formed structure with the precast block. In another embodiment, the support block 1.1 is an embedded part made of metal or non-metal material.

[0036] During actual construction:

[0037] 1. Based on the length of the window sill coping, arrange multiple precast blocks according to the attached... Figure 2 As shown in the diagram, the parts are assembled.

[0038] 2. Place the transverse main reinforcement bars into the opening slots of the support block and adjust the positions of both ends;

[0039] 3. Place the longitudinal reinforcement in the limiting groove of the precast block, and tie the longitudinal reinforcement to the transverse main reinforcement as needed (or do not tie it). This completes the assembly of the casting cavity.

[0040] 4. Apply cement mortar to the wall at the top of the windowsill, place the assembled casting cavity at the top of the windowsill, and seal both ends of the casting cavity with bricks.

[0041] 5. Pour concrete into the casting cavity to complete the casting of the window sill cap.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A formwork-free window sill capping construction structure, comprising multiple U-shaped precast blocks laid end-to-end in a wall to form a casting cavity, with transverse main reinforcement and longitudinal reinforcement cast within the casting cavity; characterized in that: One end of the precast block is provided with a support block, and the top of the support block is provided with an opening slot for placing the transverse main reinforcement. Multiple longitudinal reinforcements are placed on the transverse main reinforcement. At least one of the transverse main bars has threads at both ends, and two tension nuts are screwed onto both ends of the transverse main bar and abut against the support blocks inside the blocks at both ends of the casting cavity, for tightening multiple precast blocks.

2. The offshoot window sill coping construction structure according to claim 1, characterized in that: The precast blocks have grooves on both ends, and a sealing strip is provided in the groove at at least one end. The two adjacent precast blocks are sealed with the sealing strip.

3. The offshoot window sill coping construction structure according to claim 1, characterized in that: The inner walls on both sides of the precast block are provided with limiting grooves for placing longitudinal reinforcement.

4. The formwork-free window sill capping construction structure according to claim 1, characterized in that: A spring washer is also provided between the tensioning nut and the support block.

5. The formwork-free window sill capping construction structure according to claim 1, characterized in that: Both ends of the precast block are equipped with support blocks.

6. The formwork-free window sill capping construction structure according to any one of claims 1 to 5, characterized in that: The support block is an integrally formed structure with the precast blocks.

7. The formwork-free window sill capping construction structure according to any one of claims 1 to 5, characterized in that: The support block is an embedded part made of metal or non-metal materials.

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