Lightweight prefabricated window frame construction system and construction method thereof

Abstract

The invention discloses a lightweight prefabricated window frame construction system and a construction method thereof.The construction method comprises the steps that a masonry wall is constructed, a UHPC prefabricated window frame is placed on the masonry wall, the masonry wall continues to be constructed upwards to form a window surrounding the UHPC prefabricated window frame, and then the UHPC prefabricated window frame is constructed; indwelling steel bars which are embedded into the masonry wall and extend out of the periphery of the window extend into the concave positions of the step faces of the UHPC prefabricated window frame at the corresponding positions; a single-side die drawing device is installed at a window in the inner side of the masonry wall; the concave position of the step face, on the inner side of the formwork, of the UHPC prefabricated window frame is wrapped with remaining steel bars, concrete is poured, a post-pouring section structure is formed, and the UHPC prefabricated window frame and the masonry wall form a whole through the post-pouring section structure; and after the post-cast section structure reaches hardness and strength, the single-side die drawing device is dismantled. The connecting structure has the advantages of being convenient to construct, high in connecting strength, reliable in quality, light in weight, short in construction period, high in strength and long in durability.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a lightweight prefabricated window frame construction system and a construction method thereof. Background Art

[0002] In traditional buildings, door and window frames are mostly made of ordinary concrete, wood or metal materials. These materials have certain defects in strength, durability, construction efficiency and environmental protection. For example, ordinary concrete door and window frames are heavy, have a long construction period, and are prone to cracking and water seepage; wooden door and window frames are easily affected by the environment and are prone to decay and deformation; metal door and window frames have problems such as high cost and strong thermal conductivity. Summary of the invention

[0003] The purpose of the present invention is to provide a lightweight prefabricated window frame construction system and a construction method thereof to solve the problems of ordinary concrete door and window frames, such as heavy weight, long construction period, low strength, poor durability, easy cracking and water seepage.

[0004] In order to solve the above technical problems, the present invention provides a construction method of a lightweight prefabricated window frame construction system, comprising:

[0005] Construct masonry walls to the bottom elevation of the window, place the UHPC prefabricated window frame on the bottom elevation of the window of the masonry wall, the outer end surface of the UHPC prefabricated window frame is a stepped surface with a high outside and a low inside, and each side surface of the stepped surface located in the direction of the inner side of the masonry wall is pre-buried with multiple horizontally evenly distributed connectors, and the inner opening of the UHPC prefabricated window frame is a tongue-and-groove with a high inside and a low outside;

[0006] Continue to construct masonry walls upward on the constructed masonry walls along both sides of the UHPC prefabricated window frame to form the window surrounding the UHPC prefabricated window frame, and extend the retained steel bars implanted in the masonry walls and extending around the window into the concave part of the stepped surface of the UHPC prefabricated window frame at the corresponding position;

[0007] A single-sided drawing die device is installed at the window inside the masonry wall, the single-sided drawing die device includes a template attached to the UHPC prefabricated window frame and the masonry wall, a tie rod vertically passing through the template and threadedly connected to a connector located on the outside of the UHPC prefabricated window frame, a baffle and a nut threadedly connected to the tie rod and distributed on both sides of the template, and a sleeve sleeved on the tie rod, one end of the sleeve abuts against the baffle and the other end is butted against the connector connected to the tie rod, and also includes a fixing bolt vertically passing through the template and threadedly connected to the connector located on the inside of the UHPC prefabricated window frame;

[0008] The concave part of the step surface of the UHPC prefabricated window frame on the inner side of the template is wrapped with retained steel bars and poured with concrete to form a post-casting section structure, and the UHPC prefabricated window frame is integrated with the masonry wall through the post-casting section structure;

[0009] After the post-casting section structure reaches the hardness strength, retain the casing and remove the tie rod, nut, baffle and fixing bolt of the single-side drawing die device.

[0010] Furthermore, the construction method of the lightweight prefabricated window frame structure system provided by the present invention further includes:

[0011] A window frame is installed in the UHPC prefabricated window frame, the inner side of the window frame is fitted on the step of the tongue and groove, a plaster layer is applied on the outer side of the window frame, and a construction mesh cloth is embedded in the construction joint between the plaster layer and the UHPC prefabricated window frame on the outer side.

[0012] Furthermore, in the construction method of the lightweight prefabricated window frame structural system provided by the present invention, a sealing notch is reserved on the end face of the step surface before casting the post-casting section structure, and a PE rod is installed in the sealing notch and in the gap between the adjacent masonry walls.

[0013] Furthermore, in the construction method of the lightweight prefabricated window frame structural system provided by the present invention, the sleeve and the connector connected thereto are an integral structure.

[0014] In order to solve the above technical problems, the present invention also provides a lightweight prefabricated window frame construction system obtained according to the construction method of the above lightweight prefabricated window frame construction system, comprising a masonry wall and a UHPC prefabricated window frame at its window, wherein the outer end surface of the UHPC prefabricated window frame is a stepped surface with a high outside and a low inside, and the retained steel bars in the masonry wall extend into the recessed part of the stepped surface along the periphery of the window, and a post-casting section structure is arranged in the recessed part of the stepped surface of the UHPC prefabricated window frame covering the retained steel bars.

[0015] Furthermore, in the lightweight prefabricated window frame construction system provided by the present invention, the inner opening of the UHPC prefabricated window frame is a tongue-and-groove which is higher inside and lower outside, a window frame is installed in the UHPC prefabricated window frame, the inner side of the window frame is fitted at the tongue-and-groove, the outer side of the window frame is coated with a paint layer, and a mesh cloth is embedded on the outer side surface of the UHPC prefabricated window frame and the paint layer.

[0016] Furthermore, in the lightweight prefabricated window frame construction system provided by the present invention, a sealing notch is reserved on the end surface of the step surface, and a PE rod is installed in the sealing notch and in the gap between adjacent masonry walls.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The lightweight prefabricated window frame construction system and the construction method thereof provided by the present invention adopt UHPC prefabricated window frames to replace ordinary concrete window frames. The high-strength characteristics of the UHPC material enable the window frames to withstand greater loads and improve the bearing capacity; the UHPC material has excellent durability and crack resistance, and can effectively resist the erosion of environmental factors and extend the service life of the window frame; the window frame is a prefabricated component, which can improve the construction efficiency of the window frame construction system and shorten the construction period; under the same strength, the UHPC prefabricated window frame uses less UHPC material, which reduces the weight of the window frame and has the advantages of energy saving and environmental protection, easy installation, and time and labor saving.

[0019] The construction method of the lightweight prefabricated window frame construction system provided by the present invention uses the stepped surface of the UHPC prefabricated window frame and the connector embedded therein, uses the side surface of the stepped surface of the UHPC prefabricated window frame facing the direction of the masonry wall as a non-removable external template, installs a single-sided die-drawing device on the inner side of the window, and threadingly connects the tie rod and the fixing bolts of the single-sided die-drawing device to the connectors at corresponding positions respectively, and implants retained steel bars around the masonry wall and the UHPC prefabricated window frame, and forms a post-casting section structure by pouring concrete to firmly fix the UHPC prefabricated window frame on the masonry wall, and forms a lightweight prefabricated window frame construction system with reliable connection after removing the single-sided die-drawing device, which has the advantages of convenient construction, high connection strength and reliable quality; does not need to set up an external template separately, and has the advantage of simple construction process; and facilitates the installation of the single-sided die-drawing device and improves the reliability of the installation of the single-sided die-drawing device through the connectors around. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of the UHPC prefabricated window frame;

[0021] Figures 2 to 6 It is a schematic diagram of the facade construction process of the lightweight prefabricated window frame construction system;

[0022] Figure 7 It is a top view cross-sectional structural schematic diagram of a single-side drawing form device installed on a masonry wall;

[0023] Figure 8 It is a top-view cross-sectional structural diagram of a lightweight prefabricated window frame construction system;

[0024] Fig. 9 It is a schematic diagram of the outer structure of the lightweight prefabricated window frame construction system;

[0025] Fig.10 It is a schematic diagram of the inner structure of the lightweight prefabricated window frame construction system;

[0026] As shown in the figure:

[0027] 100. Lightweight prefabricated window frame construction system, 110. Masonry wall, 111. Window, 120. UHPC prefabricated window frame, 121. External end surface, 121a. Side surface, 121b. End surface, 121c. Concave part, 122. Connector, 123. Internal opening, 124. Tongue and groove, 125. Sealed gap, 130. Retained steel bars, 140. Post-casting section structure, 150. Window frame, 160. Paint layer, 170. Mesh cloth, 180. PE rod;

[0028] 200, single-side drawing device, 210, template, 220, tie rod, 230, baffle, 240, nut, 250, sleeve, 260, fixing bolt. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] Please refer to Figure 1 , Figure 6 , Figure 8 and Fig. 9 The embodiment of the present invention provides a lightweight prefabricated window frame construction system 100, including a masonry wall 110 and a UHPC prefabricated window frame 120 at its window, wherein the outer end face 121 of the UHPC prefabricated window frame 120 is a stepped surface with a high outer surface and a low inner surface, and the retained steel bars 130 in the masonry wall 110 extend into the recess 121c of the stepped surface along the periphery of the window, and a post-casting section structure 140 is arranged in the recess 121c of the stepped surface of the UHPC prefabricated window frame 120 to cover the retained steel bars 130. UHPC is ultra-high performance concrete, and its full English name is Ultra-High Performance Concrete. The post-casting section structure 140 is a reinforced concrete structure, and the concrete used for casting can be ultra-high performance concrete, so as to achieve a good combination with the UHPC prefabricated window frame 130 to form a whole.

[0031] In order to firmly install the window frame 150 and the window thereon, the lightweight prefabricated window frame construction system 100 provided by the embodiment of the present invention has the inner opening of the UHPC prefabricated window frame 120 as a tongue-and-groove 124 which is higher inside and lower outside, the window frame 150 is installed inside the UHPC prefabricated window frame 120, the inner side of the window frame 150 is fitted at the tongue-and-groove 124, the outer side of the window frame 150 is coated with a paint layer 160, and a mesh cloth 170 is embedded on the outer side surface of the UHPC prefabricated window frame 120 and the paint layer 160. The window frame 150 is firmly installed on the UHPC prefabricated window frame 120 through the paint layer 160 and the tongue-and-groove 124, and the mesh cloth 170 is used to improve the sealing of the joint between the paint layer 160 and the UHPC prefabricated window frame 120.

[0032] In order to prevent leakage during pouring, the lightweight prefabricated window frame construction system 100 provided in the embodiment of the present invention has a sealing notch 125 reserved on the end surface of the step surface, and a PE rod 180, i.e., a polyethylene rod, is installed in the sealing notch 125 and in the gap between the adjacent masonry walls 110. The PE rod 180 is used to seal and fill the gap between the UHPC prefabricated window frame 120 and the masonry wall 110, thereby preventing leakage at the gap during pouring in the recess 121c and improving the pouring quality.

[0033] Please refer to Figures 1 to 10 The embodiment of the present invention also provides a construction method of a lightweight prefabricated window frame construction system 100, which may include the following steps:

[0034] Step 301, construct the masonry wall 110 to the bottom elevation of the window, place the UHPC prefabricated window frame 120 on the bottom elevation of the window of the masonry wall 110, the outer end surface 121 of the UHPC prefabricated window frame 120 is a stepped surface with a high outside and a low inside, and each side surface 121a of the stepped surface located in the direction of the inner side of the masonry wall 110 is pre-buried with a plurality of connectors 122 evenly distributed horizontally. The inner opening of the UHPC prefabricated window frame 120 is a tongue-and-groove 124 with a high inside and a low outside, as shown in FIG. Figure 1 to Figure 2 shown.

[0035] Step 302: Continue to construct the masonry wall 110 upward along both sides of the UHPC prefabricated window frame 120 on the constructed masonry wall 110 to form the window 111 surrounding the UHPC prefabricated window frame 120, and extend the retained steel bars 130 implanted in the masonry wall 110 and extending around the window 111 into the concave part 121c of the stepped surface of the UHPC prefabricated window frame 120 at the corresponding position, as shown in FIG. Figure 3 shown.

[0036] Step 303, installing a single-sided drawing die device 200 at the window 111 on the inner side of the masonry wall 110, the single-sided drawing die device 200 includes a template 210 attached to the UHPC prefabricated window frame 120 and the masonry wall 110, a tie rod 220 vertically passing through the template 210 and threadedly connected to the connector 122 located on the outer side of the UHPC prefabricated window frame 120, a baffle 230 and a nut 240 threadedly connected to the tie rod 220 and distributed on both sides of the template 210, and a sleeve 250 sleeved on the tie rod 220, one end of the sleeve 250 abuts against the baffle 230 and the other end docks on the connector 122 connected to the tie rod 220, and also includes a fixing bolt 260 vertically passing through the template 210 and threadedly connected to the connector 122 located on the inner side of the UHPC prefabricated window frame 120, as shown in FIG. Figure 4 , Fig.10 shown.

[0037] Step 304: Concrete is poured into the recessed area 121c of the stepped surface of the UHPC prefabricated window frame 120 on the inner side of the template 210 to wrap the retained steel bars 130 to form a post-casting section structure 140, and the UHPC prefabricated window frame 120 and the masonry wall 110 are integrated by the post-casting section structure 140, as shown in FIG. Figure 5 and Figure 7 shown.

[0038] Step 305, after the post-casting section structure 140 reaches the hardness strength, the sleeve 250 is retained and the tie rod 220, nut 240, baffle 230 and fixing bolt 260 of the single-side drawing die device 200 are removed. Figure 6 , Figure 8 and Fig. 9 shown.

[0039] In order to improve the sealing performance and reliably install the window frame 150, the construction method of the lightweight prefabricated window frame construction system 100 provided in the embodiment of the present invention may further include:

[0040] Step 306, install the window frame 150 in the UHPC prefabricated window frame 120, fit the inner side of the window frame 150 to the step of the tongue and groove 124, apply a paint layer 160 to the outer side of the window frame 150, and cover the construction joint between the paint layer 160 and the UHPC prefabricated window frame 120 with a construction mesh cloth 170 on the outer side. Figure 6 , Figure 8 The UHPC prefabricated window frame 120 is provided with an inner high and outer low tongue 124 at the inner opening of the window frame 150, which also has a good anti-leakage effect.

[0041] In order to prevent leakage during pouring, the construction method of the lightweight prefabricated window frame structure system 100 provided in the embodiment of the present invention reserves a sealing gap 125 on the end face of the step surface before pouring the post-casting section structure 140, and a PE rod 180 is installed in the sealing gap 125 and in the gap between the adjacent masonry walls 110.

[0042] In order to facilitate the removal of the tie rod 220, in the construction method of the lightweight prefabricated window frame construction system 100 provided by the embodiment of the present invention, the sleeve 250 and the connector 122 connected thereto may be an integral structure.

[0043] The lightweight prefabricated window frame construction system 100 and the construction method thereof provided in the embodiment of the present invention adopt UHPC prefabricated window frames 120 to replace ordinary concrete window frames 150. The high-strength characteristics of the UHPC material enable the window frames 150 to withstand greater loads and improve the bearing capacity. The UHPC material has excellent durability and crack resistance, and can effectively resist the erosion of environmental factors and extend the service life of the window frames 150. The window frames 150 are prefabricated components, which can improve the construction efficiency of the window frame 150 construction system and shorten the construction period. Under the same strength, the UHPC prefabricated window frames 120 use less UHPC materials, which reduces the weight of the window frames 150, and have the advantages of energy saving and environmental protection, easy installation, and time and labor saving.

[0044] The construction method of the lightweight prefabricated window frame structure system 100 provided by the embodiment of the present invention comprises: using the stepped surface of the UHPC prefabricated window frame 120 and the pre-buried connector 122 therein, using the side surface 121a of the stepped surface of the UHPC prefabricated window frame 120 facing the direction of the masonry wall 110 as the non-removal external template 210, installing a single-sided drawing die device 200 on the inner side of the window 111, and threading the tie rod 220 and the fixing bolt 260 of the single-sided drawing die device 200 on the connector 122 at the corresponding position respectively, and connecting the UHPC prefabricated window frame 120 with the masonry wall 110. Retained steel bars 130 are implanted around the window frame 120, and the UHPC prefabricated window frame 120 is firmly fixed on the masonry wall 110 by pouring concrete to form a post-cast section structure 140. After the single-sided die-casting device 200 is removed, a lightweight prefabricated window frame structural system 100 with reliable connection is formed, which has the advantages of convenient construction, high connection strength and reliable quality; there is no need to set up an external formwork 210 separately, which has the advantage of simple construction process; the connectors 122 around the four sides facilitate the installation of the single-sided die-casting device 200 and improve the reliability of the installation of the single-sided die-casting device 200.

[0045] The lightweight prefabricated window frame construction system 100 and the construction method thereof provided by the embodiment of the present invention, the connection portion between the UHPC prefabricated window frame 120 and the masonry wall 110 can meet the requirements of high strength, high durability and good seismic resistance.

[0046] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A construction method for a lightweight prefabricated window frame structure system, characterized in that: include: Construct masonry walls to the bottom elevation of the window, place the UHPC prefabricated window frame on the bottom elevation of the window of the masonry wall, the outer end surface of the UHPC prefabricated window frame is a stepped surface with a high outside and a low inside, and each side surface of the stepped surface located in the direction of the inner side of the masonry wall is pre-buried with multiple horizontally evenly distributed connectors, and the inner opening of the UHPC prefabricated window frame is a tongue-and-groove with a high inside and a low outside; Continue to construct masonry walls upward on the constructed masonry walls along both sides of the UHPC prefabricated window frame to form the window surrounding the UHPC prefabricated window frame, and extend the retained steel bars implanted in the masonry walls and extending around the window into the concave part of the stepped surface of the UHPC prefabricated window frame at the corresponding position; A single-sided drawing die device is installed at the window inside the masonry wall, the single-sided drawing die device includes a template attached to the UHPC prefabricated window frame and the masonry wall, a tie rod vertically passing through the template and threadedly connected to a connector located on the outside of the UHPC prefabricated window frame, a baffle and a nut threadedly connected to the tie rod and distributed on both sides of the template, and a sleeve sleeved on the tie rod, one end of the sleeve abuts against the baffle and the other end is butted against the connector connected to the tie rod, and also includes a fixing bolt vertically passing through the template and threadedly connected to the connector located on the inside of the UHPC prefabricated window frame; The concave part of the step surface of the UHPC prefabricated window frame on the inner side of the template is wrapped with retained steel bars and poured with concrete to form a post-casting section structure, and the UHPC prefabricated window frame is integrated with the masonry wall through the post-casting section structure; After the post-casting section structure reaches the hardness strength, retain the casing and remove the tie rod, nut, baffle and fixing bolt of the single-side drawing die device.

2. The construction method of the lightweight prefabricated window frame structure system according to claim 1, characterized in that: Also includes: A window frame is installed in the UHPC prefabricated window frame, the inner side of the window frame is fitted on the step of the tongue and groove, a plaster layer is applied on the outer side of the window frame, and a construction mesh cloth is embedded in the construction joint between the plaster layer and the UHPC prefabricated window frame on the outer side.

3. The construction method of the lightweight prefabricated window frame structure system according to claim 1, characterized in that: Before pouring the post-casting section structure, a sealing gap is reserved on the end surface of the step surface, and a PE rod is installed in the sealing gap and on the gap between the adjacent masonry walls.

4. The construction method of the lightweight prefabricated window frame structure system according to claim 1, characterized in that: The sleeve and the connector connected thereto are an integrated structure.

5. A lightweight prefabricated window frame construction system obtained according to the construction method of the lightweight prefabricated window frame construction system according to claim 1, characterized in that: It comprises a masonry wall and a UHPC prefabricated window frame at its window, wherein the outer end surface of the UHPC prefabricated window frame is a stepped surface which is higher on the outside and lower on the inside, the retained steel bars in the masonry wall extend into the concave part of the stepped surface along the periphery of the window, and a post-casting section structure is arranged in the concave part of the stepped surface of the UHPC prefabricated window frame covering the retained steel bars.

6. The lightweight prefabricated window frame construction system according to claim 5, characterized in that: The inner opening of the UHPC prefabricated window frame is a tongue-and-groove with a high inner side and a low outer side. A window frame is installed in the UHPC prefabricated window frame. The inner side of the window frame fits in the tongue-and-groove. The outer side of the window frame is coated with a paint layer. The outer side surface of the UHPC prefabricated window frame and the paint layer are embedded with mesh cloth.

7. The lightweight prefabricated window frame construction system according to claim 6, characterized in that: A sealing notch is reserved on the end surface of the step surface, and a PE rod is installed in the sealing notch and on the gap between adjacent masonry walls.

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