Construction method of thermal insulation exterior wall structure with window sill opening

Abstract

The present invention relates to the technical field of window sill opening construction, and in particular to a method for constructing a thermal insulation exterior wall structure with a window sill opening, comprising the following steps: cleaning a base surface, planting reinforcement bars on both sides of the window opening, and laying self-insulating blocks layer by layer to the bottom of the window sill cap; arranging U-shaped thermal insulation blocks at both ends of the window sill cap tie beam, with the openings of the two U-shaped thermal insulation blocks arranged opposite to each other, setting cap tie beam reinforcement bars according to design requirements, and connecting the ends of the cap tie beam reinforcement bars to the planted reinforcement bars; supporting a tie beam casting template, pouring concrete, and pouring concrete into the template and through holes; laying self-insulating blocks on both sides of the window opening without waiting for the concrete to solidify, and pouring concrete into the through holes where the planted reinforcement bars are located to form a column core; adopting this method, it can be ensured that the expansion nails for fixing the window frame are shot onto the concrete, thereby ensuring the stability and safety of the window frame installation; effectively connecting the window sill cap tie beam and the core columns on both sides of the window opening, thereby ensuring the integrity of the wall, ensuring the installation quality of the window frame, and avoiding water seepage in the window sill in the later stage.

Description

Technical Field

[0001] The invention relates to the technical field of window sill opening construction, in particular to a construction method of a thermal insulation exterior wall structure with a window sill opening. Background Art

[0002] With the promotion of energy-saving and environmentally friendly building materials, the application of exterior wall self-insulation technology has become more and more extensive, and self-insulating blocks are increasingly used in the construction of structural facades. When all facades are built with self-insulating blocks, the masonry structure at the window sill opening is involved. A pressure top structure needs to be set on the lower side of the window sill to ensure the stability of the window frame and prevent external rainwater from entering and affecting the strength of the lower wall.

[0003] The existing technology usually includes the following two methods: First, the top tie beam is tied with formwork and concrete is poured, and the depth of the top tie beam extending into the masonry wall structure on both sides is not less than 300mm; this method requires waiting for the poured concrete to reach the design strength and removing the formwork before the next construction can be carried out, which has low construction efficiency and seriously affects the construction period; Second, the top tie beam is made of self-insulating blocks filled with fine stone concrete throughout its length, and the self-insulating blocks serve as the template for pouring the top tie beam. After pouring, the wall structure on both sides of the window can still be constructed with masonry. After the strength of the poured concrete reaches the design strength, the window frame is fixed to the tie beam with expansion nails; using this method, due to the small width of the concrete structure, the expansion nails are easily shot on the self-insulating blocks, causing the blocks to break, which not only leads to the unreliable installation of the window frame, but also damages the structural quality. After the window is installed, there is a risk of water seepage, which increases the cost of rework and repair in the later stage. Summary of the Invention

[0004] The present invention aims to solve the above problems, thereby providing a construction method for an insulated exterior wall structure with window sill openings, which can improve the installation efficiency of high-rise longitudinal large-diameter water-cooling pipes and ensure construction safety.

[0005] The present invention solves the above problems by adopting the following technical solutions:

[0006] A construction method for an insulating exterior wall structure with a window sill opening comprises the following steps:

[0007] S1: First, arrange the self-insulating blocks according to the architectural drawings, ensure that the self-insulating blocks are staggered, and ensure that the self-insulating blocks on both sides of the window opening form through holes from bottom to top for inserting rebar;

[0008] S2: Clean the base surface, plant reinforcement on both sides of the window opening, and lay the insulation blocks layer by layer to the bottom of the window sill;

[0009] S3: Install U-shaped insulation blocks at both ends of the window sill's top tie beam. The U-shaped insulation blocks are located outside the planted reinforcement. The openings of the two U-shaped insulation blocks are set opposite each other. Install top tie beam reinforcement between the two U-shaped insulation blocks according to design requirements. The ends of the top tie beam reinforcement are connected to the planted reinforcement.

[0010] S4: Support the tie beam casting formwork, and set the tie beam casting formwork on the outside of the U-shaped insulation block. Use wooden planks to support and fix the outside of the tie beam casting formwork;

[0011] S5: Concrete pouring: Concrete is poured into the tie beam casting formwork and the through holes where the reinforcement bars are located on the lower side of the tie beam;

[0012] S6: Self-insulating blocks can be laid on both sides of the window opening without waiting for the concrete to solidify. The walls on both sides of the window opening are laid layer by layer from bottom to top, and then concrete is poured from the top into the through holes where the rebar is located to form the column core.

[0013] Preferably, a further technical solution of the present invention is:

[0014] Before pouring concrete, an insulation board is installed in the tie beam casting formwork, and the insulation board is tied and fixed to the tie beam steel bars.

[0015] Step S6 specifically includes:

[0016] S601: Lay self-insulating blocks layer by layer on the walls on both sides of the window opening from bottom to top, until they are 40 mm to 60 mm away from the upper floor slab;

[0017] S602: Set up a column core casting template at the position corresponding to the through hole between the upper floor slab and the top self-insulating block, and reserve a casting hole on one side of the template;

[0018] S603: Pour concrete from the pouring hole into the column core pouring formwork. The concrete is poured from top to bottom, filling the through hole on the upper side of the capping tie beam and the column core pouring formwork. After the concrete strength reaches the demoulding strength, the formwork is removed and the pouring opening is filled with plaster.

[0019] S604: Wait for 7 to 10 days until the masonry shrinkage is complete. The remaining gap between the upper floor slab and the top self-insulating blocks can be filled with fine stone concrete or inclined top bricks.

[0020] The length of the U-shaped insulation block is ≥300mm.

[0021] Insulation blocks are compounded in the vertical parts on both sides of the U-shaped insulation building block.

[0022] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0023] By adopting this method, the pouring thickness of the top tie beam concrete is large, which can ensure that the expansion nails for fixing the window frame are shot on the concrete, thereby ensuring the stability and safety of the window frame installation; at the same time, the window sill top tie beam is effectively connected with the core columns on both sides of the window opening, thereby ensuring the integrity of the wall, thereby ensuring the installation quality of the window frame, avoiding water seepage on the window sill in the later stage, ensuring the construction quality, and saving the cost of rework and repair in the later stage; clarifying the construction standard of the thermal insulation exterior wall structure with window sill opening, while speeding up the construction speed, it is convenient for construction and quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of the embodiment of the present invention when the thermal insulation blocks are laid to the bottom of the window sill top;

[0025] Figure 2 Schematic diagram of the structure of the top tie beam when the steel bars are tied in an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0027] Figure 4 This is a schematic structural diagram of the top tie beam supporting the formwork in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the top structure of the top tie beam supporting the formwork in an embodiment of the present invention;

[0029] Figure 6 This is a schematic structural diagram of the column core casting process according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the inclined top bricks in an embodiment of the present invention;

[0031] Figure 8 This is a schematic structural diagram of a U-shaped thermal insulation block according to an embodiment of the present invention;

[0032] Figure 9 This is a schematic structural diagram of another U-shaped thermal insulation building block according to an embodiment of the present invention;

[0033] Figure 10 Schematic diagram of the structure of the self-insulating building block in an embodiment of the present invention.

[0034] In the figure: 1. Floor slab; 2. Anchor bolts; 3. Self-insulating blocks; 301. Main body of first block; 302. First insulation block; 303. Through hole; 4. U-shaped insulation block; 401. Main body of second block; 402. Second insulation block; 403. U-shaped groove; 5. Formwork for casting tie beam; 6. Wooden planks; 7. Tie beam reinforcement; 8. Top tie beam; 9. Formwork for casting column core; 10. Through hole; 11. Column core; 12. Top brick. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0036] like Figures 1 to 10 As shown, this embodiment provides a construction method for an insulated exterior wall structure with a window sill opening, comprising the following steps:

[0037] S1: First, arrange the self-insulating blocks 3 according to the architectural drawings. The self-insulating blocks 3 include main-specification self-insulating blocks and half-block self-insulating blocks. When arranging the blocks, it is necessary to ensure that the self-insulating blocks 3 are staggered. At the same time, it is necessary to ensure that the through holes 303 of the self-insulating blocks 3 on both sides of the window opening correspond to each other, forming a through hole 10 from bottom to top for inserting the rebar 2. The main-specification self-insulating blocks 3 can adopt the existing composite insulation blocks with holes on the market, and the structure is as follows: Figure 10 As shown, it includes a first building block body 301, a first insulation block 302 is installed on the outside of the first building block body 301 through a dovetail groove and a dovetail structure, and a through hole 303 for inserting the embedded steel bar 2 is provided on the inside.

[0038] S2: If Figure 1 , clean the base surface, plant reinforcement 2 on both sides of the window opening according to the design requirements, and lay the self-insulating blocks 3 layer by layer according to the brick arrangement design until they reach the bottom of the window sill.

[0039] S3: If Figure 2 、 Figure 3 U-shaped insulation blocks 4 are set at both ends of the top tie beam 8 of the window sill. The U-shaped insulation blocks 4 are located on the outside of the planted reinforcement 2. The openings of the two U-shaped insulation blocks 4 are arranged opposite to each other. The top tie beam steel bars 7 are set between the two U-shaped insulation blocks 4 according to the design requirements. The ends of the top tie beam steel bars 7 are welded and fixed to the planted reinforcement 2 or fixed by binding wire; among them, the length of the U-shaped insulation block 4 is ≥300mm to ensure that the depth of the top tie beam 8 extending into the masonry wall structure on both sides is not less than 300mm.

[0040] Preferably, in order to ensure the self-insulation of the tie beam and avoid the cold bridge phenomenon, before pouring concrete, an insulation board is installed in the tie beam casting template, and the insulation board is tied and fixed to the tie beam steel bar 7.

[0041] The U-shaped insulation block 4 can be set with a single-side insulation block or a double-side insulation block to meet the needs of different regions; when a single-side insulation block is set, Figure 8 The U-shaped insulation block 4 includes a second block body 401 with a three-layer structure. The lower side of the block body is equipped with a second insulation block 402 through a dovetail groove and a dovetail structure. A U-shaped groove 403 is formed on the upper side for passing the planted reinforcement 2 and tying the tie beam reinforcement 7. When in use, the side where the second insulation block 402 is located is located outside the masonry wall. When double-sided insulation blocks are set, such as Figure 9 The U-shaped insulation block 4 includes a second block body 401 with a four-layer structure, and a second insulation block 402 is installed on both sides through dovetail grooves and dovetail structures. A U-shaped groove 403 is provided in the middle for passing the embedded rebar 2 and tying the tie beam steel bars 7.

[0042] S4: As Figure 4 、 Figure 5 , support the tie beam casting formwork 5, the tie beam casting formwork 5 is set in contact with the outside of the U-shaped insulation block 4, and the outside of the tie beam casting formwork 5 is fixed with wooden squares 6; the wooden squares 6 are set in an inverted U-shaped structure, including two side rods and a connecting top rod, the two side rods are located on the outside of the tie beam casting formwork 5, and the two side rods and the tie beam casting formwork 5 are fixed by connecting bolts.

[0043] S5: Concrete pouring: Concrete is poured into the tie beam casting template 5 and the through hole 10 where the anchor bar 2 is located on the lower side of the tie beam;

[0044] S6: The self-insulating blocks 3 on both sides of the window opening can be laid without waiting for the concrete to solidify. The laying process includes:

[0045] S601: Lay self-insulating blocks 3 layer by layer on the walls on both sides of the window opening from bottom to top, until the distance from the upper floor slab 1 is 40 mm to 60 mm;

[0046] S602: If Figure 6 , a column core casting template 9 is set at the position corresponding to the through hole 10 between the upper floor 1 and the top self-insulating block 3, and a casting hole is reserved on one side of the column core casting template 9;

[0047] S603: Pour concrete from the pouring hole into the column core pouring formwork 9. The concrete is poured from top to bottom and fills the through hole 10 on the upper side of the capping tie beam 8 and the column core pouring formwork 9. After the concrete strength reaches the demoulding strength, the formwork is removed and the pouring opening is plastered and filled.

[0048] S604: If Figure 7 Wait 7 to 10 days until the masonry shrinkage is complete. The remaining gap between the upper floor slab 1 and the top self-insulating block 3 can be filled with fine stone concrete or inclined top bricks 12, and the gap can be filled with plaster.

[0049] By adopting this method, the concrete pouring thickness of the top tie beam 8 is large, which can ensure that the expansion nails for fixing the window frame are shot on the concrete, thereby ensuring the stability and safety of the window frame installation; at the same time, the window sill top tie beam 8 is effectively connected to the core columns on both sides of the window opening, thereby ensuring the integrity of the wall, thereby ensuring the installation quality of the window frame, avoiding water seepage on the window sill in the later stage, ensuring the construction quality, and saving the cost of rework and repair in the later stage; clarifying the construction standards of the thermal insulation exterior wall structure with window sill openings, while speeding up the construction speed, it is convenient for construction and quality control.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of the present invention.

Claims

1. A construction method for an insulation exterior wall structure with a window sill opening, characterized in that: The steps include: S1: First, arrange the self-insulating blocks according to the architectural drawings, ensure that the self-insulating blocks are staggered, and ensure that the self-insulating blocks on both sides of the window opening form through holes from bottom to top for inserting rebar; S2: Clean the base surface, plant reinforcement on both sides of the window opening, and lay the insulation blocks layer by layer to the bottom of the window sill; S3: Install U-shaped insulation blocks at both ends of the window sill's top tie beam. The U-shaped insulation blocks are located outside the planted reinforcement. The openings of the two U-shaped insulation blocks are set opposite each other. Install top tie beam reinforcement between the two U-shaped insulation blocks according to design requirements. The ends of the top tie beam reinforcement are connected to the planted reinforcement. S4: Support the tie beam casting formwork, and set the tie beam casting formwork on the outside of the U-shaped insulation block. Use wooden planks to support and fix the outside of the tie beam casting formwork; S5: Concrete pouring: Concrete is poured into the tie beam casting formwork and the through holes where the reinforcement bars are located on the lower side of the tie beam; S6: Self-insulating blocks can be laid on both sides of the window opening without waiting for the concrete to solidify. The walls on both sides of the window opening are laid layer by layer from bottom to top, and then concrete is poured from the top into the through holes where the rebar is located to form the column core.

2. The construction method of the thermal insulation exterior wall structure with window sill opening according to claim 1, characterized in that: Before pouring concrete, an insulation board is installed in the tie beam casting formwork, and the insulation board is tied and fixed to the tie beam steel bars.

3. The construction method of the thermal insulation exterior wall structure with window sill opening according to claim 1, characterized in that: Step S6 specifically includes: S601: Lay self-insulating blocks layer by layer on the walls on both sides of the window opening from bottom to top, until they are 40 mm to 60 mm away from the upper floor slab; S602: Set up a column core casting template at the position corresponding to the through hole between the upper floor slab and the top self-insulating block, and reserve a casting hole on one side of the template; S603: Pour concrete from the pouring hole into the column core pouring formwork. The concrete is poured from top to bottom, filling the through hole on the upper side of the capping tie beam and the column core pouring formwork. After the concrete strength reaches the demoulding strength, the formwork is removed and the pouring opening is filled with plaster. S604: Wait for 7 to 10 days until the masonry shrinkage is complete. The remaining gap between the upper floor slab and the top self-insulating blocks can be filled with fine stone concrete or inclined top bricks.

4. The construction method of the thermal insulation exterior wall structure with window sill opening according to claim 1, characterized in that: The length of the U-shaped insulation block is ≥300mm.

5. The construction method of the thermal insulation exterior wall structure with window sill opening according to claim 4, characterized in that: Insulation blocks are compounded in the vertical parts on both sides of the U-shaped insulation building block.

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