A waterproof window sill coping and its construction method

Abstract

The invention relates to the technical field of window sill top construction, and aims to solve the problem that the construction quality and efficiency cannot be taken into consideration by the existing window sill top construction method, and provides a waterproof window sill top and a construction method thereof, wherein the waterproof window sill top comprises two relatively arranged prefabricated segments, a cast-in-place segment is arranged between the two prefabricated segments, the prefabricated segment is a reinforced concrete structure, one end of the prefabricated segment is assembled in a wall, the other end of the prefabricated segment is provided with a waterproof groove, and the two ends of the cast-in-place segment are respectively matched with the prefabricated segments on both sides; the prefabricated segments are prefabricated in a factory, and are installed when bricklaying reaches the window sill top elevation, and the cast-in-place segment is cast after bricklaying is completed; the invention can ensure the continuous construction of brickwork and window sill top, simplify the masonry construction process, not only can ensure the quality of masonry construction and prevent water seepage of the window sill in the later stage, but also can improve the construction efficiency and shorten the construction period.

Description

Technical Field

[0001] The invention relates to the technical field of window sill capping construction, and in particular to a waterproof window sill capping and a construction method thereof. Background Art

[0002] In the construction industry, exterior wall construction has always been a very important link, and the window sill pressure at the bottom of the exterior window directly affects the quality of exterior wall construction and is related to the waterproof performance of the exterior wall. Improper construction will cause water leakage from the window sill, which will directly affect the subsequent living experience.

[0003] At present, the existing window sill caps are generally reinforced cast-in-place concrete components, and the following two methods are generally used during construction. One is to leave a groove for the anchor end of the window sill cap when the masonry construction reaches the bottom elevation of the window sill cap, or directly not reserve the anchor end of the window sill cap, and then cast concrete after the upper masonry is built. The disadvantage of this method is that the density of the part of the cast window sill cap extending into the wall cannot be guaranteed, and it cannot be guaranteed that the window sill cap achieves its desired effect. The second is to support the formwork, tie the steel bars and cast the window sill cap when the masonry construction reaches the bottom elevation of the window sill cap, and then remove the formwork to continue to build the upper masonry after reaching a certain strength. This method has complicated procedures and increases the construction period, which is not conducive to on-site implementation. Summary of the invention

[0004] The invention aims to provide a waterproof window sill capping and a construction method thereof, so as to solve the problem that the construction quality and efficiency cannot be taken into consideration at the same time by adopting the existing window sill capping construction method.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] The present invention provides a waterproof window sill capping, comprising two prefabricated segments arranged opposite to each other, a cast-in-place segment being arranged between the two prefabricated segments, the prefabricated segments being reinforced concrete structures, one end of the prefabricated segments being assembled in a wall, the other end of the prefabricated segments being arranged with a waterproof groove, the two ends of the cast-in-place segment being respectively matched with the prefabricated segments on both sides; the prefabricated segments are prefabricated in a factory, and are installed when bricklaying reaches the window sill capping elevation, and the cast-in-place segment is cast after bricklaying is completed.

[0007] As the preferred technical solution:

[0008] The end of the prefabricated segment provided with the waterproof groove is reserved with connecting steel bars, and the connecting steel bars are used to be connected with the steel bars of the cast-in-place segment.

[0009] As the preferred technical solution:

[0010] The connecting steel bars are overlap-welded with the steel bars of the cast-in-place segment.

[0011] As a preferred technical solution:

[0012] A corner groove is formed on the side of the precast segment. The length direction of the corner groove is the same as that of the precast segment. Cement mortar is filled in the corner groove to tightly connect the precast segment with the wall.

[0013] As a preferred technical solution:

[0014] The cement mortar is polymer cement mortar.

[0015] As a preferred technical solution:

[0016] The waterproof groove is arranged longitudinally, and the concrete of the cast-in-place segment is embedded in the waterproof groove.

[0017] As a preferred technical solution:

[0018] The waterproof groove is a U-shaped groove, and the corner groove is an L-shaped groove.

[0019] The present invention further provides a construction method for a waterproof window sill coping, including the following steps:

[0020] S1: Fabricate the formwork for the precast segment of the waterproof window sill coping in the factory, apply a demolding agent on the formwork, and reserve a steel bar hole on one side formwork of the precast segment;

[0021] S2: Set up the formwork for the precast segment;

[0022] S3: Install spacers inside the formwork of the precast segment, then bind the steel bars of the precast segment inside the formwork to form a steel bar framework. The precast segment reserves connecting steel bars, and the connecting steel bars pass through the steel bar holes on the side formwork. The connecting steel bars are used to be connected with the steel bars of the cast-in-place segment later, and the spacers are used to support the steel bars of the precast segment;

[0023] S4: Pour concrete inside the formwork of the precast segment. After the concrete is formed, remove the formwork to obtain the precast segment, and then cure the precast segment;

[0024] S5: After bricklaying up to the elevation of the window sill coping, symmetrically place two precast segments, and then continue bricklaying to the top;

[0025] S6: Bind the steel bars of the cast-in-place segment between the two precast segments, fixedly connect the steel bars of the cast-in-place segment with the connecting steel bars, then set up the formwork for the cast-in-place segment, and pour the concrete of the cast-in-place segment.

[0026] As a preferred technical solution:

[0027] It further includes S7: Fill cement mortar in the corner groove on the precast segment to tightly connect the precast segment with the wall.

[0028] As a preferred technical solution:

[0029] In S1, the formwork for the precast segment adopts aluminum alloy formwork, and the formwork for the precast segment includes a bottom formwork and side formworks.

[0030] As a preferred technical solution:

[0031] In S2, when erecting the formwork for the precast segment, rectangular steel pipes are fixed at the upper and lower ends of the side formworks for later forming the corner grooves on the side edges of the precast segment.

[0032] As a preferred technical solution:

[0033] In S2, after erecting the formwork for the precast segment, angle steel and pins are used to reinforce it. The angle steel is installed above the side formworks and is tensioned between the two side formworks, and the angle steel is fixed to the side formworks through pins.

[0034] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0035] 1. The present invention divides the window sill coping into precast segments and cast-in-place segments. The precast segments are prefabricated. When the bricklaying reaches the elevation of the window sill coping, one precast segment is installed on each side of the window, and then the bricklaying continues to the top. Subsequently, the steel bars of the cast-in-place segment are tied to the reserved steel bars of the precast segment, and the formwork is supported to pour the concrete of the cast-in-place segment. By adopting the technical solution provided by the present invention, one end of the precast segment can be anchored in the wall, ensuring the compactness between the precast segment and the wall and preventing water seepage at the window sill in the later stage; at the same time, continuous construction of the brick masonry and the window sill coping can be realized, ensuring that the brick masonry construction and the window sill coping are carried out simultaneously, which can not only ensure the construction quality of the masonry, but also be beneficial to shortening the construction period, improving the construction efficiency, reducing the management cost and maintenance cost.

[0036] 2. The present invention is provided with a waterproof groove at one end of the precast segment, and the waterproof groove is a U-shaped groove arranged longitudinally. After the concrete of the cast-in-place segment is poured, the concrete will fill the waterproof groove. The design of the waterproof groove ensures the mutual engagement of the concrete of the precast segment and the cast-in-place segment, eliminating the process of chiseling the end of the precast segment, and the waterproof groove can play a good waterproof effect, isolating the outside and inside of the precast segment and preventing rainwater from seeping in through the construction joint between the precast segment and the cast-in-place segment.

[0037] 3. The present invention fills polymer cement mortar in the corner grooves on the side edges of the precast segment to ensure that the contact positions between the precast component and the brick wall, two different materials, can be connected densely and play a waterproof role.

[0038] 4. The present invention solves the problem that the construction quality and construction cost of the traditional window sill coping cannot adapt to each other, ensuring both being beneficial to on-site implementation and guaranteeing certain economic benefits. Brief Description of the Drawings

[0039] Figure 1 It is an installation schematic diagram of the waterproof window sill coping described in the present invention.

[0040] Figure 2 It is an assembly schematic diagram of the precast segment and the wall described in the present invention.

[0041] Figure 3 It is a structural schematic diagram of the precast segment described in the present invention.

[0042] Figure 4 is Figure 3 the top view of.

[0043] Figure 5 is Figure 3 the front view of.

[0044] Figure 6 is Figure 3 the right view of.

[0045] Figure 7 is Figure 4 the sectional view taken along A-A in.

[0046] Figure 8 is Figure 5 the sectional view taken along B-B in.

[0047] Figure 9 It is the erection drawing of the formwork for the precast segment of the present invention.

[0048] Icon: 1 - connecting steel bar, 2 - waterproof groove, 3 - corner groove, 4 - precast segment concrete, 5 - stirrup, 6 - precast segment, 7 - cast-in-place segment, 8 - side formwork, 9 - bottom formwork, 10 - angle steel, 11 - pin, 12 - rectangular steel pipe, 13 - wall. Detailed Embodiments

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] Embodiment 1

[0051] As Figure 1 and Figure 2As shown in the figure, this embodiment provides a waterproof window sill coping, which includes two relatively arranged precast segments 6, and the two precast segments 6 are respectively installed at both ends of the window opening. There is a cast-in-place segment 7 between the two precast segments 6, and both the precast segment 6 and the cast-in-place segment 7 are reinforced concrete structures.

[0052] The precast segment 6 is prefabricated in the factory in advance. It is a precast component and is directly transported to the site for assembly, while the cast-in-place segment 7 is formed by casting on the construction site.

[0053] As Figures 3 - 8 shown in the figure, during the prefabrication process of the precast segment 6, a connecting steel bar 1 is reserved at one end, and the connecting steel bar 1 extends out from one side of the precast segment 6. The end of the precast segment 6 without the reserved connecting steel bar 1 is assembled into the wall 13, and the end with the reserved connecting steel bar 1 is connected to the cast-in-place segment 7. A waterproof groove 2 is also provided at the end of the precast segment 6 with the reserved connecting steel bar 1. The waterproof groove 2 is a U-shaped groove, and the waterproof groove 2 is longitudinally arranged in the middle of the side of the precast segment 6. When the bricklaying reaches the elevation of the window sill coping, the precast segment 6 is installed in place, and then the bricklaying continues to the top without interruption. After the bricklaying is completed, the construction of the cast-in-place segment 7 begins: the cast-in-place segment steel bars are lapped and welded together with the connecting steel bar 1, and then the formwork is supported to pour the cast-in-place segment 7. The concrete of the cast-in-place segment 7 will be embedded in the waterproof groove 2, which not only increases the connection strength between the cast-in-place segment 7 and the precast segment 6, but also prevents rainwater from seeping in from the construction joint between the precast segment 6 and the cast-in-place segment 7. After the concrete of the cast-in-place segment 7 is formed, the formwork can be removed.

[0054] To ensure that the contact position between the precast segment 6 and the brick wall of two different materials can be connected densely, a corner groove 3 is further opened on the side of the precast segment 6. The corner groove 3 is an L-shaped groove. The length direction of the corner groove 3 is the same as the length direction of the precast segment 6. The corner groove 3 is filled with polymer cement mortar, which tightly connects the precast segment 6 and the wall 13, achieving a waterproof effect and avoiding leakage in the later stage.

[0055] Adopting the above structure can ensure that the brick masonry construction and the window sill coping are carried out simultaneously, and can ensure the construction quality of the masonry and improve the construction efficiency.

[0056] The construction method of the above waterproof window sill coping includes the following steps:

[0057] S1: Prefabricate the formwork of the precast segment 6 of the waterproof window sill coping in the factory, and apply a demolding agent on the formwork. Among them, the formwork of the precast segment 6 is a fixed-size aluminum alloy formwork, which only includes a bottom formwork 9 and a side formwork 8. A steel bar hole is reserved on one side formwork 8 of the precast segment 6;

[0058] S2: Erect the aluminum alloy formwork. During the erection process, fix the rectangular steel pipe 12 at the upper and lower ends of the side formwork 8 for forming the corner groove 3 on the side of the precast segment 6 in the later stage. Then, reinforce it with angle steel 10 and pins 11. Install the angle steel 10 above the side formwork 8 and tension it between two long-side formworks 8, and fix the angle steel 10 on the side formwork 8 through the pins 11.

[0059] S3: Install concrete cushion blocks inside the formwork of the precast segment 6, and then bind the precast segment steel bars inside the formwork to form a steel bar framework. The precast segment 6 is reserved with connecting steel bars 1, and the connecting steel bars 1 pass through the steel bar holes on the side formwork 8. The connecting steel bars 1 are used to be connected with the steel bars of the cast-in-place segment 7 later. The cushion blocks are used to support the precast segment steel bars to prevent the precast segment steel bars from contacting the bottom formwork 9.

[0060] S4: Pour concrete inside the formwork of the precast segment 6. After the concrete is formed, remove the formwork to obtain the precast segment 6, and then cure the precast segment 6.

[0061] S5: After bricklaying up to the elevation of the window sill coping, symmetrically place two precast segments 6 at the window opening, set the ends with the reserved connecting steel bars 1 of the precast segments 6 opposite to each other, and then continue bricklaying to the top.

[0062] S6: Bind the cast-in-place segment steel bars between the two precast segments 6, fixedly connect the cast-in-place segment steel bars with the connecting steel bars 1, and then erect the formwork of the cast-in-place segment 7 and pour the concrete of the cast-in-place segment 7. Among them, the formwork of the cast-in-place segment 7 is a wooden formwork.

[0063] S7: Fill the corner groove 3 on the precast segment 6 with cement mortar to closely connect the precast segment 6 with the wall 13.

[0064] Among them, in S1, according to the self-flowing waterproof window sill coping design scheme and the CAD model, prefabricate the aluminum alloy formwork, as well as the angle steel 10 and pins 11 to be used later in the factory, ensuring that the formwork size, thickness, and the size and specifications of the pins 11 meet the requirements of the design scheme. The formwork size should be processed in the factory according to the length and thickness of the window sill coping anchorage section.

[0065] In S2, erecting the aluminum alloy formwork includes: Assembling the aluminum alloy formwork according to the size of the window sill coping. As Figure 9 shown, install the bottom formwork 9 and side formwork 8 according to the design scheme. The formworks are fixed with pins 11. The angle steel 10 is tensioned between the long-side formworks 8, and both ends of the angle steel 10 are fixed on the long-side formworks 8 through pins 11 respectively. When installing the formworks, fix the rectangular steel pipe 12 at the upper and lower ends of the long-side formwork 8 so as to achieve the grooving effect after concrete pouring, which is used to form the corner groove 3 on the precast segment 6 later.

[0066] In S3, reserve segment steel bars are tied according to the design requirements. The reserve segment steel bars include longitudinal steel bars and stirrups 5. One end of the longitudinal steel bar extends out of the side formwork 8, and this extended part is the connecting steel bar 1. The length of the connecting steel bar 1 is 10d. After the steel bar installation is completed, concrete is poured. The concrete uses C25 fine aggregate concrete and is vibrated densely. After reaching the strength, the reserve segment formwork is removed in time and the reserve segment is cured.

[0067] In S6, the welding length of the cast-in-place steel bars and the connecting steel bar 1 is 10d. After the concrete of the cast-in-place segment 7 is formed, the formwork is removed and the cast-in-place segment 7 is cured.

[0068] In this embodiment, the connecting steel bar 1 uses C12 hot-rolled ribbed steel bars. The width of the U-shaped groove is 15 mm and the depth is 15 mm. The width of the corner groove 3 is 15 mm. The stirrup 5 uses C6@200 mm hot-rolled ribbed steel bars. The rectangular steel pipe 12 uses a rectangular galvanized steel pipe of 15×15×2 mm.

[0069] By adopting the above construction method, the problem of the necessary construction gap existing between the traditional window sill coping construction and the masonry construction is overcome. At the same time, the problem of non-standard window sill coping construction is avoided, and the leakage risk caused by non-standard window sill coping construction is avoided. The seamless connection between the brick masonry and the window sill coping construction is realized, ensuring the continuous construction of the brick masonry and the window sill coping, simplifying the masonry construction process. When the brick wall is being built, the waterproof window sill coping is installed synchronously, greatly improving the overall construction efficiency of the masonry, reducing the project construction period, and at the same time ensuring the overall construction quality of the masonry and reducing the window sill leakage risk, which has important practical and economic significance; by adopting the above construction method, 1 day is saved for each layer of masonry construction, and at the same time, the anti-seepage performance of the window sill coping is improved.

[0070] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A construction method for a waterproof window sill coping, characterized in that: The waterproof window sill coping includes two relatively arranged precast segments, an in-situ cast segment is provided between the two precast segments, the precast segment is a reinforced concrete structure, one end of the precast segment is assembled in the wall body, a waterproof groove is provided at the other end of the precast segment, and both ends of the in-situ cast segment are respectively adapted to the precast segments on both sides; the precast segment is precast in the factory and installed when the bricklaying reaches the elevation of the window sill coping, and the in-situ cast segment is cast after the bricklaying is completed; Connecting steel bars are reserved at the end of the precast segment provided with the waterproof groove, and the connecting steel bars are used to connect with the steel bars of the in-situ cast segment; Corner grooves are formed on the side edges of the precast segment, the length direction of the corner grooves is the same as the length direction of the precast segment, and cement mortar is used for filling in the corner grooves to tightly connect the precast segment with the wall body; The waterproof groove is arranged longitudinally, and the concrete of the in-situ cast segment is embedded in the waterproof groove; The waterproof groove is a U-shaped groove, and the corner groove is an L-shaped groove; The construction method includes the following steps: S1: Prefabricate the formwork of the precast segment of the waterproof window sill coping in the factory, and apply a demoulding agent on the formwork. A steel bar hole is reserved on one side formwork of the precast segment; S2: Set up the formwork of the precast segment; S3: Install cushion blocks in the formwork of the precast segment, and then bind the steel bars of the precast segment in the formwork to form a steel bar framework. Connecting steel bars are reserved in the precast segment, and the connecting steel bars pass through the steel bar holes on the side formwork. The connecting steel bars are used to connect with the steel bars of the in-situ cast segment in the future, and the cushion blocks are used to support the steel bars of the precast segment; S4: Pour concrete in the formwork of the precast segment, remove the formwork after the concrete is formed to obtain the precast segment, and cure the precast segment; S5: After the bricklaying reaches the elevation of the window sill coping, symmetrically place two precast segments, and then continue the bricklaying to the top; S6: Bind the steel bars of the in-situ cast segment between the two precast segments, fixedly connect the steel bars of the in-situ cast segment with the connecting steel bars, then set up the formwork of the in-situ cast segment, and pour the concrete of the in-situ cast segment; In S2, when setting up the formwork of the precast segment, fix the rectangular steel pipes at the upper and lower ends of the side formwork for forming the corner grooves on the side edges of the precast segment in the later stage.

2. The construction method for a waterproof window sill coping according to claim 1, characterized in that: It also includes S7: Embed cement mortar in the corner grooves on the precast segment to tightly connect the precast segment with the wall body.

3. The construction method for a waterproof window sill coping according to claim 1, characterized in that: In S1, the formwork of the precast segment adopts an aluminum alloy formwork, and the formwork of the precast segment includes a bottom formwork and side formworks.

4. The construction method for a waterproof window sill coping according to any one of claims 1 - 3, characterized in that: In S2, after setting up the formwork of the precast segment, reinforce it with angle steel and pins. Install the angle steel above the side formwork and pull it between the two side formworks, and fix the angle steel on the side formwork through pins.

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