A detachable mold for improving the water-stopping effect of a slope section of a side wall of an underground structure

Abstract

The utility model discloses a detachable mould for improving underground structure side wall slope paragraph water stop effect, including water stop steel sheet, water stop steel sheet end head cover, a plurality of segment baffle, the inclination angle of water stop steel sheet placement is consistent with the inclination angle of side wall slope section, water stop steel sheet end head cover is equipped with water stop steel sheet top, and a plurality of interval 40 50 centimeters segment baffle are fixed through the nail shooting, and then water stop steel sheet is fixed in the intermediate position of side wall inclination plane, and the horizontal plate extension direction of each segment baffle is parallel with the inclination plane of side wall, forms the flow restriction channel. The present application solves the problem of high water stop steel sheet deviation rate, increased water seepage path and poor self-waterproof effect of main structure in the construction of traditional method in inclined section, and the mould is convenient to disassemble, and the vibration problem is solved simultaneously by using the baffle gap.

Description

Technical Field

[0001] This utility model relates to the field of waterproof construction technology for underground engineering structures, specifically to a detachable mold for improving the water-stopping effect of the sloping section of the side wall of an underground structure. Background Technology

[0002] In underground structural engineering projects such as rainwater pumping stations, there may be sloping sections of the bottom slab and side walls. During the construction of the main structure, the pouring sequence is as follows: first, construct the foundation layer, then construct the bottom slab. During the pouring of the bottom slab concrete, it is generally required to pour 30-50cm of side wall concrete simultaneously. Water-stop steel plates need to be pre-embedded in the side wall concrete to improve the self-waterproofing of the main structure. It is also generally required that the position of the pre-embedded water-stop steel plate be such that the concrete is poured to the middle position.

[0003] However, while the concrete pouring surface is relatively easy to control for level slabs and side walls, it is crucial to control it on slopes. In sloping sections, the concrete pouring surface needs to be aligned with the slope and poured to the center of the pre-embedded waterstop steel plate. At this point, due to the fluid plastic state of the concrete during pouring, controlling the concrete pouring surface becomes challenging. In actual slope construction, traditional methods resulted in a waterstop steel plate offset rate exceeding 30%, increasing the seepage path by 50% and reducing the self-waterproofing effect of the main structure. Therefore, controlling the concrete pouring surface to be positioned at the center of the waterstop steel plate is vital for waterproofing underground structures on slopes. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a detachable mold for improving the water-stopping effect of the slope section of the side wall of the underground structure, so as to solve the technical problem that the existing molds for the water-stopping effect of the slope section of the side wall cannot fix the pouring position of the water-stopping steel plate and are not easy to disassemble.

[0005] According to the technical solution provided in the embodiments of this application, a detachable mold for improving the water-stopping effect of the sloping section of the sidewall of an underground structure includes a water-stopping steel plate, a water-stopping steel plate end sleeve, and several segmental baffles. The tilt angle of the water-stopping steel plate is consistent with the tilt angle of the sloping section of the sidewall. The water-stopping steel plate end sleeve is detachably fitted onto the exposed end of the water-stopping steel plate. The multiple segmental baffles are arranged at intervals along the slope direction, and each baffle is vertically fixed to the sidewall of the water-stopping steel plate end sleeve by nails or steel nails. This fixes the water-stopping steel plate in the middle of the sloping surface of the sidewall. The horizontal extension direction of each segmental baffle is parallel to the sloping surface of the sidewall, forming a flow restriction channel. The interval area between each segmental baffle is used for the vibration of the poured concrete. The horizontal extension direction of the segmental baffle is parallel to the slope surface, and its vertical plate is fixed to the end sleeve, together forming a U-shaped channel that restricts the flow of concrete.

[0006] Furthermore, the water-stop steel plate includes a vertical part and two inclined parts, the two inclined parts being arranged correspondingly along the vertical direction of the vertical part and inclined to the left.

[0007] Furthermore, the end sleeve structure of the water-stop steel plate is compatible with the upper structure of the water-stop steel plate.

[0008] Furthermore, the segmental baffle includes a vertical plate and a horizontal plate, with the end of the vertical plate connected to the horizontal plate, so that the segmental baffle has an L-shaped structure.

[0009] Furthermore, the segmental baffle is 40-50 cm long.

[0010] Furthermore, the segmental baffle and the end sleeve of the water-stop steel plate are made of the same material.

[0011] Furthermore, the adjacent two segment baffles are spaced 40-50 cm apart, and the spacing is used for concrete vibration during the side wall pouring process.

[0012] A concrete construction method for underground structural sidewalls on sloping sections includes the following steps:

[0013] S1. Tie the bottom slab reinforcement and side wall reinforcement;

[0014] S2. A water-stop steel plate is pre-embedded along the slope, and the water-stop steel plate is centrally located at the construction joint of the side wall;

[0015] S3. Install a detachable end sleeve for the waterstop steel plate, wherein the end sleeve is fitted onto the exposed end of the waterstop steel plate;

[0016] S4. Segmented installation of segmental baffles: The baffle length is customized according to the spacing of the side wall reinforcement, and the spacing between adjacent segmental baffles is controlled to be 40cm-50cm based on the effective radius of the vibrator; the segmental baffles are fixed to the end sleeves of the waterstop steel plate along the slope direction, and the fixing method is to use nails or steel nails.

[0017] S5. Pour and vibrate the concrete, using the gaps between the segment baffles for vibration operation;

[0018] S6. Remove the end sleeves and segment baffles of the waterstop steel plate before the concrete initially sets;

[0019] S7. Concrete curing;

[0020] In this process, the installation of the segmental baffle in step S4 and the removal in step S6 work together to automatically form a flat interface on the concrete pouring surface that is consistent with the slope, and the water-stop steel plate is precisely located at the center of the concrete thickness, eliminating the need for manual finishing.

[0021] In this invention, further, in step S4, when the baffles are installed in sections, a gap of 45cm is reserved between adjacent baffles.

[0022] In this invention, the demolition operation in step S6 is further completed within 3–5 hours after the concrete pouring is finished.

[0023] In summary, the beneficial effects of this application are as follows:

[0024] 1. During the construction of the side wall of the slope section of the underground structure, a water-stop steel plate end sleeve is fitted on the top of the water-stop steel plate that needs to be pre-embedded in the middle position, and segment baffles are set at intervals on both sides of the water-stop steel plate end sleeve, so that the segment baffles are fixed to the water-stop steel plate end sleeve by nails or steel nails, so that it is easy to disassemble after the pouring is completed.

[0025] Second, by setting water-stop steel plates with the same inclination on the side walls of the sloping section of the underground structure, and fixing the water-stop steel plates in the middle of the side walls by using end sleeves and several segment baffles along the inclination angle of the side walls before pre-embedding the water-stop steel plates, the water-stop steel plates are fixed in the middle of the side walls, preventing the water-stop steel plates from having a vertical drop at the construction joint of the sloping section, reducing the seepage path, and improving the self-waterproofing effect of the main structure.

[0026] Third, traditional horizontal section construction cannot be directly applied to slopes. This solution uses a combination of detachable segmented baffles and end caps to achieve precise centering and fixing of the water-stop steel plate in the slope section for the first time, and uses the gap between the baffles to solve the vibration problem simultaneously. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the front structure of this utility model;

[0030] Figure 3 This is a schematic diagram showing the exploded structure of the end sleeve of the water-stop steel plate and the segmental baffle of this utility model.

[0031] The numbers in the diagram are: waterstop steel plate 100, waterstop steel plate end sleeve 200, segment baffle 300, side wall 400, and bottom plate 500. Detailed Implementation

[0032] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] A detachable mold for improving the water-stopping effect of sloping sections of underground structure sidewalls, its structure is as follows: Figures 1-3 As shown, the system includes a water-stop steel plate 100, a water-stop steel plate end sleeve 200, and several segmented baffles 300. The water-stop steel plate 100 is placed at an angle along the sloping section of the side wall 400 and positioned in the middle of the side wall 400 to be poured. The water-stop steel plate end sleeve 200 is fitted onto the top end of the water-stop steel plate 100. Several segmented baffles 300 are set on both sides of the water-stop steel plate end sleeve 200 (where the side wall of the end sleeve 200 has nail holes), so that each segmented baffle 300 is arranged side by side and spaced apart along the sloping angle of the side wall 400. They are installed on both sides of the water-stop steel plate end sleeve 200 by nails or steel nails, thereby fixing the pre-embedded pouring position of the sloping section of the side wall 400 of the water-stop steel plate 100.

[0035] like Figure 1 and Figure 3 As shown, the waterstop steel plate 100 includes a vertical part and two inclined parts. The two inclined parts are arranged correspondingly along the vertical direction of the vertical part and inclined to the left so that the waterstop steel plate 100 has an open U-shaped structure. The structure of the waterstop steel plate end sleeve 200 is adapted to the upper structure of the waterstop steel plate 100 so that the waterstop steel plate end sleeve 200 is fitted on the top end of the waterstop steel plate 100, and at the same time, it is convenient to disassemble after the pre-embedded pouring is completed.

[0036] like Figure 1As shown, the spacing between two adjacent segment baffles 300 is 40-50 cm. Generally, the vertical reinforcement of the side wall is relatively dense, at 15 cm or 20 cm, and there are also horizontal distribution reinforcements. Therefore, in actual operation, the end sleeve of the waterstop steel plate can be inserted from high to low without being affected by the reinforcement. The length of the segment baffle basically ensures that it spans 2-3 vertical reinforcements of the side wall, taking into account both the convenience of installation and the requirements of concrete vibration. At the same time, the vertical plate of the segment baffle is fixed to the end sleeve of the waterstop steel plate. The construction requirements of the flat plate are the same as those of ordinary formwork, and a release agent is applied to facilitate demolding. When the slope of the inclined section is 30°, the spacing of the segment baffles 300 is adjusted to 50 cm; when the slope of the inclined section is 45°, the spacing of the segment baffles 300 is adjusted to 40 cm. The opening of the spacing is used for concrete vibration during the pouring of the side wall 400, thereby vibrating the side wall 400 concrete and improving the pouring quality of the underground structure side wall 400.

[0037] like Figure 2 and Figure 3 As shown, the segmental baffle 300 includes a vertical plate and a horizontal plate. The end of the vertical plate is connected to the horizontal plate so that the segmental baffle 300 has an L-shaped structure. The vertical part is connected to the end sleeve 200 of the waterstop steel plate by a nail or a steel nail, thereby fixing the waterstop steel plate 100 to the middle position of the cast side wall 400.

[0038] like Figure 1 and Figure 3 As shown, the segmental baffle 300 is 40-50 cm long. Short-distance segmental baffles 300 are used so that they can be adapted to the distribution of vertical steel bars in the side wall 400, and thus are easy to disassemble after the concrete is poured.

[0039] like Figure 1 and Figure 3 As shown, the segment baffle 300 and the water-stop steel plate end sleeve 200 are made of bamboo plywood or other materials commonly used in construction, thereby improving the convenience and practicality of mold construction.

[0040] A concrete construction method suitable for the sidewalls of underground structures on sloping sections is as follows:

[0041] During the construction of the underground structure, when pouring the 500mm base slab, the side walls 400mm (30-50cm thick) need to be poured simultaneously. A water-stop steel plate 100 needs to be pre-embedded in the middle of the side walls 400mm to enhance the self-waterproofing performance of the underground structure. However, in existing underground structures, due to the self-flowing nature of the concrete during the pouring of the side walls 400mm on the slope section, the pre-embedded water-stop steel plate 100 cannot be fixed as it is in the horizontal section. To address this, a detachable water-stop steel plate end sleeve 200 is fitted over the pre-embedded steel plate in the slope section of the underground structure. Corresponding L-shaped structural segment baffles 300 are installed on both sides of the end sleeves 200. Each segment baffle 300 is fixed to the end sleeves 200 using nails or steel nails. Each segment baffle 300 is 40-50cm long and is spaced according to the distribution of the vertical reinforcement of the side walls 400mm. To ensure that the intervals between the segment baffles 300 are 40-50 cm, the horizontal parts of each segment baffle 300 are installed into the side wall 400 reinforcement according to the inclination angle of the inclined section. Simultaneously, each segment baffle 300 is fixed to the end sleeve 200 of the waterstop steel plate using nails or steel nails, ensuring the fixed direction aligns with the slope. After the formwork is fixed, concrete is poured through the pouring port. During pouring, the poured concrete is compacted using a vibrator through the gaps between the segment baffles 300 at intervals of approximately 40-50 cm, thereby improving the pouring quality of the inclined section of the underground structure side wall 400. After pouring, the segment baffles 300 fixed at both ends of the end sleeve 200 of the waterstop steel plate are removed. Since the end sleeve 200 of the waterstop steel plate and the segment baffles 300 are made of commonly used bamboo plywood or other materials, the convenience and practicality of the formwork construction are improved. By installing a water-stop steel plate 100 with the same inclination on the side wall 400 of the underground structure slope section, and fixing the water-stop steel plate 100 at the inclination angle of the side wall 400 with the end sleeve 200 and several segment baffles 300 before pre-embedding the water-stop steel plate 100, the water-stop steel plate 100 is fixed in the middle of the side wall 400, thereby increasing the centering rate of the water-stop steel plate to 95%, reducing the seepage rate by 80%, and improving the self-waterproofing effect of the main structure.

[0042] According to actual measurements from a rainwater pumping station project, after using this mold:

[0043] The centering rate of the waterstop steel plate is ≥95% (previously ≤70%).

[0044] The flatness deviation of the concrete surface is ≤3mm (originally requiring manual finishing).

[0045] Dismantling time is reduced by 50%, and there is no mold residue.

[0046] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the utility model involved in this application is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A detachable mold for improving the water-stopping effect of sloping sections of sidewalls in underground structures, characterized in that: The system includes a water-stop steel plate (100), a water-stop steel plate end sleeve (200), and several segmental baffles (300). The water-stop steel plate (100) is placed at an inclination angle consistent with the inclination angle of the sloping section of the side wall (400). The water-stop steel plate end sleeve (200) is detachably fitted onto the exposed end of the water-stop steel plate (100). The multiple segmental baffles (300) are arranged at intervals along the slope direction, and each baffle is vertically fixed to the side of the water-stop steel plate end sleeve (200) by nails or steel nails. The wall; then the water-stop steel plate (100) is fixed in the middle of the inclined surface of the side wall (400); and the horizontal plate extension direction of each of the segment baffles (300) is parallel to the inclined surface of the side wall (400), forming a flow restriction channel; and the interval area of ​​each of the segment baffles (300) is used for the vibration of the concrete after pouring; the horizontal plate extension direction of the segment baffle (300) is parallel to the slope surface, and its vertical plate is fixed with the end sleeve (200), together forming a U-shaped channel to restrict the flow of concrete.

2. The detachable mold for improving the water stop effect of the slope section of the side wall of the underground structure according to claim 1, characterized in that: The water-stop steel plate (100) includes a vertical part and two inclined parts. The two inclined parts are arranged correspondingly along the vertical direction of the vertical part and are inclined to the left.

3. The detachable mold for improving the water stop effect of the slope section of the side wall of the underground structure according to claim 1, characterized in that: The structure of the end sleeve (200) of the waterstop steel plate is compatible with the upper structure of the waterstop steel plate (100).

4. The detachable mold for improving the water stop effect of the slope section of the side wall of the underground structure according to claim 1, characterized in that: The segmental baffle (300) includes a vertical plate and a horizontal plate, with the end of the vertical plate connected to the horizontal plate, so that the segmental baffle (300) has an L-shaped structure.

5. The detachable mold for improving the water stop effect of the slope section of the side wall of the underground structure according to claim 1, characterized in that: The segmental baffle (300) is 40-50 cm long.

6. The detachable mold for improving the water stop effect of the slope section of the side wall of the underground structure according to claim 1, characterized in that: Both the segmental baffle (300) and the end sleeve (200) of the water-stop steel plate are made of bamboo plywood.

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