Fabricated precast concrete member
By incorporating fiber optic cable slots and penetrating crystalline waterproofing components into precast concrete components, combined with detection fibers and waterproof sealing parts, the water seepage problem in precast assembled components was solved, achieving both active protection and passive monitoring, thus improving the water seepage prevention effect and monitoring accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN SHIGU TECHNOLOGY ENGINEERING CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-26
AI Technical Summary
Existing precast concrete components are prone to cracking and damage under the influence of improper connection, load and settlement, forming leakage points, making it difficult to achieve effective seepage monitoring.
By incorporating fiber optic cable slots and penetrating crystalline waterproofing components into precast concrete components, and combining them with detection fibers and waterproof sealing parts, active protection and passive monitoring can be achieved. The penetrating crystalline waterproofing components form needle-like crystals under the action of water to block water infiltration, while the fiber optic cables monitor the leakage points.
It achieves dual protection and monitoring functions for precast concrete components, quickly detects leakage points and carries out maintenance, and improves the water-proofing effect and monitoring accuracy.
Smart Images
Figure CN224281744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast concrete structures, specifically to an assembled precast concrete component. Background Technology
[0002] Precast concrete components refer to concrete products manufactured in factories using standardized and mechanized methods. In contrast, traditional cast-in-place concrete requires on-site molding, pouring, and curing. Using precast concrete components in construction can improve the degree of factory and mechanized construction, reduce on-site wet work, and shorten the construction cycle. In the prior art, such as patent publication number CN212405495U, a precast concrete component is disclosed, including at least two precast individual components and connecting components. The at least two precast individual components are connected to each other through the connecting components. Each precast individual component includes symmetrically arranged connecting slots. The connecting components include connecting protrusions, which are set in the connecting slots to connect at least two precast individual components. This results in a high degree of matching between the precast concrete components and the connecting components, improving the positioning accuracy of the precast concrete components. However, after construction, the products are prone to cracking and damage due to improper connection, load, settlement, etc., forming leakage points, making it difficult to monitor water seepage in the precast components. Utility Model Content
[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and to provide a prefabricated concrete component.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A precast concrete component includes a precast concrete part, which includes a precast layer and a postcast layer. A fiber optic arrangement groove is provided between the precast and postcast layers. A detection fiber is installed in the fiber optic arrangement groove. Fixing adhesive for fixing the detection fiber is provided at intervals in the fiber optic arrangement groove. The two ends of the fiber optic arrangement groove are connected to the side wall of the precast concrete part. A protective sleeve is provided at the end of the fiber optic arrangement groove. The detection fiber passes through the protective sleeve. The precast concrete part is provided with an assembly part. A penetrating crystalline waterproof component is provided inside the assembly part. The penetrating crystalline waterproof component is strip-shaped and arranged inside the precast concrete part. An arrangement spacing is provided between the penetrating crystalline waterproof component and the corresponding assembly part.
[0006] In some embodiments of this invention, a waterproof sealing portion is arranged between the protective sleeve and the detection optical fiber.
[0007] In some embodiments of this utility model, the optical fiber of the detection optical fiber is arranged inside the outer sheath, and detection point fiber gratings are installed at intervals on the optical fiber of the detection optical fiber.
[0008] In some embodiments of this utility model, the outer permeation sleeve is filled with a filler adhesive, which is arranged between two adjacent fiber optic gratings at two detection points.
[0009] In some embodiments of this utility model, the assembly part includes an assembly hole and an assembly connection part.
[0010] In some embodiments of this utility model, the arrangement distance between the penetrating crystalline waterproof component and the corresponding assembly part is 5-30mm, and the distance between adjacent penetrating crystalline waterproof components is not less than 3mm.
[0011] In some embodiments of this utility model, the cross-section of the penetrating crystalline waterproof component is rectangular.
[0012] In some embodiments of this utility model, the optical fiber arrangement groove is arranged on the top surface of the precast layer, and the upper part of the precast layer is provided with an outer recess along the circumferential direction, and the outer recess is coated with a penetrating crystallizing waterproof layer.
[0013] In some embodiments of this utility model, the outer recess includes a bottom surface and a side wall. The bottom surface of the recess is connected to the side wall of the pre-cast layer, and the side wall of the recess is connected to the top surface of the pre-cast layer. The side wall of the recess is coated with a penetrating crystallizing waterproof layer, and a water-blocking strip is arranged on the bottom surface of the recess.
[0014] In some embodiments of this utility model, the thickness of the penetrating crystallization waterproof layer is 1-5mm.
[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:
[0016] 1. The precast concrete components adopt optical fiber detection and waterproof design to achieve dual protection of active protection and passive monitoring.
[0017] 2. The inner side of the assembly section is equipped with a penetrating crystalline waterproof component. This component is placed inside the precast concrete component. If water seepage occurs, the penetrating crystalline material reacts under the action of water, forming tiny needle-like crystals in the concrete. These crystals block the pores inside the concrete, thus preventing further water penetration and providing excellent waterproofing. Detection optical fibers are also installed inside the precast concrete component. These fibers are placed inside the outer penetrating sleeve and, in conjunction with an external fiber optic demodulator, enable water seepage monitoring of the precast component. In the event of leakage, this helps to quickly identify the seepage point and facilitate maintenance and repair.
[0018] 3. The outer permeation sleeve is filled with filler adhesive, which is placed between the fiber optic gratings of two adjacent detection points. The filler adhesive acts as a water barrier to prevent permeation water from seeping along the optical fibers inside the outer permeation sleeve.
[0019] 4. Fixing adhesive is installed at intervals in the fiber optic cable tray. The fixing adhesive can prevent the detection fiber from shifting during the pouring of the post-concrete layer, ensuring the accuracy of the monitoring points.
[0020] 5. The upper part of the first-cast layer has an outer recess along the circumference. The outer recess is coated with a penetrating crystalline waterproof layer. Together with penetrating crystalline waterproof components, it plays a role in preventing water seepage. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 For the present utility model Figure 1 Enlarged view of point A;
[0024] Figure 3 This is a schematic diagram of the penetrating crystalline waterproof component of this utility model;
[0025] Figure 4 This is a schematic diagram of the outer permeation sleeve of this utility model;
[0026] Explanation of key figure labels:
[0027] 1. Precast concrete component; 10. Precast layer; 11. Postcast layer; 12. Fiber optic cable tray; 13. Outer recess; 14. Penetrating crystalline waterproof layer; 15. Water-blocking strip; 16. Assembly hole; 17. Assembly recess; 18. Assembly protrusion; 19. Outlet hole; 2. Detection fiber optic cable; 20. Outer penetrating sleeve; 21. Epoxy resin adhesive; 22. Protective sleeve; 23. Waterproof sealing part; 3. Penetrating crystalline waterproof component. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0029] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.
[0030] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.
[0031] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.
[0032] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".
[0033] See the example. Figure 1-4 :
[0034] A precast concrete component includes a precast concrete component 1, which includes a precast layer 10 and a postcast layer 11. An optical fiber arrangement groove 12 is provided between the precast layer 10 and the postcast layer 11. A detection optical fiber 2 is installed in the optical fiber arrangement groove 12. Fixing adhesive for fixing the detection optical fiber 2 is provided at intervals in the optical fiber arrangement groove 12. Preferably, the fixing adhesive is epoxy resin adhesive 21.
[0035] In one embodiment, the upper part of the pre-cast layer 10 is provided with an outer recess 13 along the circumferential direction, and the outer recess 13 is coated with a penetrating crystalline waterproof layer 14.
[0036] In one embodiment, the outer recess 13 includes a bottom surface and a side wall. The bottom surface of the recess is connected to the side wall of the pre-cast layer 10, and the side wall of the recess is connected to the top surface of the pre-cast layer 10. The side wall of the recess is coated with a penetrating crystallizing waterproof layer 14, and a water-blocking strip 15 is arranged on the bottom surface of the recess.
[0037] Preferably, the fiber optic arrangement groove 12 is arranged on the top surface of the pre-cast layer 10, and the post-cast layer 11 is provided with an outlet hole 19 facing the fiber optic arrangement groove 12. After the pre-cast layer 10 is poured, the detection fiber 2 is arranged in the fiber optic arrangement groove 12, and epoxy resin 21 is arranged at intervals. After the outer recess 13 is provided with a penetrating crystallization waterproof layer 14 and a water-blocking strip 15, the post-cast layer 11 is poured. It can be understood that the bottom of the post-cast layer 11 covers the top surface of the pre-cast layer 10 and fills the fiber optic arrangement groove 12.
[0038] In one embodiment, the thickness of the penetrating crystalline waterproof layer 14 is 1-5 mm.
[0039] The two ends of the fiber optic arrangement groove 12 are connected to the side wall of the precast concrete component 1. Preferably, when two adjacent precast concrete components 1 are assembled, the ends of the fiber optic arrangement groove 12 on the side wall of the precast concrete component 1 are opposite to each other, which facilitates the arrangement of the detection fiber 2.
[0040] In one embodiment, the optical fiber of the detection optical fiber 2 is arranged inside the outer permeable sleeve 20. Detection point fiber gratings are installed at intervals on the optical fiber of the detection optical fiber 2. The outer permeable sleeve 20 is made of semi-permeable or permeable material. In use, the detection optical fiber 2 is connected to an external fiber demodulator. When water permeates through the outer permeable sleeve 20, the fiber grating generates a monitoring signal characterizing the heat change and transmits it to the fiber demodulator.
[0041] In one embodiment, the outer permeation sleeve 20 is filled with a filler adhesive, which is placed between two adjacent fiber optic gratings at the detection points. The filler adhesive serves to block water and prevent permeation water from seeping along the optical fibers inside the outer permeation sleeve 20.
[0042] A protective sleeve 22 is provided at the end of the optical fiber arrangement slot 12, and the detection optical fiber 2 passes through the protective sleeve 22. Preferably, a waterproof sealing part 23 is arranged between the protective sleeve 22 and the detection optical fiber 2.
[0043] The precast concrete component 1 is provided with an assembly section, and a penetrating crystalline waterproofing component 3 is provided inside the assembly section. The penetrating crystalline waterproofing component 3 is strip-shaped and arranged inside the precast concrete component 1, with a spacing between the penetrating crystalline waterproofing component 3 and the corresponding assembly section. It can be understood that the penetrating crystalline waterproofing component 3 can be placed inside the precast concrete component 1 during the pouring of the precast concrete component 1.
[0044] Preferably, the penetrating crystalline waterproof component 3, the penetrating crystalline waterproof layer 14, and the waterproof sealing part 23 are made of cement-based penetrating crystalline waterproof material.
[0045] The assembly part includes an assembly hole 16 and an assembly connection part. The assembly connection part includes an assembly recess 17 and an assembly protrusion 18 respectively arranged in the precast concrete component 1. Between two precast concrete components 1, the assembly protrusion 18 of any precast concrete component 1 is arranged in the assembly recess 17 of the other precast concrete component 1. Preferably, both the precast layer 10 and the postcast layer 11 are provided with assembly recesses 17 and assembly protrusions 18.
[0046] In one embodiment, the arrangement distance between the penetrating crystalline waterproof component 3 and the corresponding assembly part is 5-30mm, and the distance between adjacent penetrating crystalline waterproof components 3 is not less than 3mm.
[0047] In one embodiment, the penetrating crystalline waterproof component 3 is arranged in two layers, with the upper and lower layers of penetrating crystalline waterproof components 3 arranged alternately.
[0048] In one embodiment, the cross-section of the penetrating crystalline waterproof component 3 is rectangular.
[0049] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.
Claims
1. A fabricated precast concrete element, characterized by: The precast concrete component (1) includes a precast layer (10) and a postcast layer (11). A fiber optic arrangement groove (12) is provided between the precast layer (10) and the postcast layer (11). A detection fiber optic cable (2) is installed in the fiber optic arrangement groove (12). Fixing adhesive for fixing the detection fiber optic cable (2) is provided at intervals in the fiber optic arrangement groove (12). The two ends of the fiber optic arrangement groove (12) are connected to the side wall of the precast concrete component (1). A protective sleeve (22) is provided at the end of the fiber optic arrangement groove (12). The detection fiber optic cable (2) passes through the protective sleeve (22). The precast concrete component (1) is provided with an assembly part. A penetrating crystalline waterproof component (3) is provided inside the assembly part. The penetrating crystalline waterproof component (3) is strip-shaped and arranged inside the precast concrete component (1). A spacing is provided between the penetrating crystalline waterproof component (3) and the corresponding assembly part.
2. The precast concrete component according to claim 1, characterized in that: A waterproof sealing part (23) is arranged between the protective sleeve (22) and the detection optical fiber (2).
3. A precast concrete component according to claim 1, characterized in that: The optical fiber of the detection optical fiber (2) is arranged inside the outer permeation sleeve (20), and the optical fiber of the detection optical fiber (2) is equipped with detection point fiber gratings at intervals.
4. A precast concrete component according to claim 3, characterized in that: The outer permeation sleeve (20) is filled with a filler adhesive, which is placed between the fiber gratings of two adjacent detection points.
5. A precast concrete component according to claim 1, characterized in that: The assembly part includes an assembly hole (16) and an assembly connection part.
6. A precast concrete component according to claim 1, characterized in that: The arrangement distance between the penetrating crystalline waterproof component (3) and the corresponding assembly part is 5-30mm, and the distance between adjacent penetrating crystalline waterproof components (3) is not less than 3mm.
7. A precast concrete component according to claim 1, characterized in that: The cross-section of the penetrating crystalline waterproof component (3) is rectangular.
8. A precast concrete component according to any one of claims 1-7, characterized in that: The fiber arrangement groove (12) is arranged on the top surface of the precast layer (10). The upper part of the precast layer (10) is provided with an outer recess (13) along the circumferential direction. The outer recess (13) is coated with a penetrating crystallizing waterproof layer (14).
9. A precast concrete component according to claim 8, characterized in that: The outer recess (13) includes a bottom surface and a side wall. The bottom surface of the recess is connected to the side wall of the pre-cast layer (10), and the side wall of the recess is connected to the top surface of the pre-cast layer (10). The side wall of the recess is coated with a penetrating crystallizing waterproof layer (14), and a water-blocking strip (15) is arranged on the bottom surface of the recess.
10. A precast concrete component according to claim 9, characterized in that: The thickness of the penetrating crystalline waterproof layer (14) is 1-5 mm.