A positioning and paving device for a shield segment outer arc reinforcing fabric
Patent Information
- Application Number
- CN202522264164.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2025-08-19
- Filing Date
- 2025-10-27
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-27
AI Technical Summary
[0002]在盾构隧道管片的生产过程中，尤其是盾构隧道混凝土管片，其边下料边振动成型的工艺特点，使得管片外弧面极易产生浮浆，经过蒸养环节后，外弧面微裂纹问题开始显现；当水养结束存放于堆场时，在风吹日晒作用下，水分蒸发，进一步加剧了外弧面微裂纹的产生，这些微裂纹的存在，严重威胁着盾构隧道的防水性能，容易导致渗漏水现象发生，影响隧道的正常使用和使用寿命，目前，针对混凝土管片外弧面微裂纹问题，常见的控制措施有控制混凝土流态和堆场洒水养护，降低混凝土流态虽能减少外弧面浮浆厚度，但会阻碍浇筑振动和排气过程，影响混凝土的密实性；而混凝土管片自身强度高、密实度大的特性，使得堆场洒水养护时，水分难以渗透到管片内部，养护效果大打折扣，在外弧面加铺增强织物是改善管片性能的有效手段，操作也相对简便，然而，增强织物在管片外弧面的定位精准度直接决定了其增强效果，传统的人工定位铺装方式，容易出现织物定位偏差、移位等问题，无法充分发挥增强织物的作用，难以有效解决管片外弧面的质量问题
本实用新型通过设置用来设于盾构隧道混凝土管片一侧的定位架体，设于定位架体上的多个织物固定组件，以及设于定位架体上的辅助固定组件，定位架体与盾构隧道混凝土管片外弧面贴合，配合其上的刻度，能够实现增强织物在盾构隧道混凝土管片外弧面的精准定位，确保增强织物安装位置准确无误，左右偏差可控制在极小范围内，有效提高增强织物铺装质量，增强织物定位组件中的固定锥可调节，能够根据不同规格的增强织物和盾构隧道混凝土管片需求，灵活调整固定锥的伸出长度，适应多种工况，提高装置的通用性，辅助固定组件中的磁铁块，实现了定位架体的辅助固定，有效防止定位架体在铺装过程中发生移位，保证增强织物定位的稳定性，装置结构简单，操作方便，能够快速完成增强织物的定位铺装工作，相比传统人工定位方式，大幅缩短施工时间，提高盾构隧道混凝土管片的生产效率，通过精准定位铺装增强织物，能够有效减少盾构隧道混凝土管片外弧面微裂纹的产生，显著提升抗裂、防渗性能，延长使用寿命，保障盾构隧道工程的质量和安全，具有安全、适用等特点，有很好的推广和实用价值，广泛的推广应用后会产生良好的经济效益。
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Figure CN224835032U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shield tunnel concrete segment construction technology, and in particular to a positioning and paving device for reinforcing fabric on the outer arc surface of shield segments. Background Technology
[0002] During the production of shield tunnel segments, especially concrete segments, the process of simultaneous material feeding and vibration molding makes the outer curved surface of the segments highly susceptible to slurry buildup. After steam curing, micro-cracks begin to appear on the outer curved surface. When the water curing process ends and the segments are stored in the yard, the evaporation of moisture under wind and sun further exacerbates the formation of these micro-cracks. The presence of these micro-cracks seriously threatens the waterproofing performance of the shield tunnel, easily leading to water leakage and affecting the normal use and service life of the tunnel. Currently, common control measures for the micro-crack problem on the outer curved surface of concrete segments include controlling the flow state of the concrete and water curing in the storage yard. While low concrete flowability can reduce the thickness of laitance on the outer arc surface, it hinders the pouring vibration and venting process, affecting the compactness of the concrete. Furthermore, the high strength and density of the concrete segments themselves make it difficult for water to penetrate the segments during curing in the stockpile, significantly reducing the curing effect. Adding reinforcing fabric to the outer arc surface is an effective way to improve segment performance, and the operation is relatively simple. However, the accuracy of the reinforcing fabric's positioning on the outer arc surface directly determines its reinforcing effect. Traditional manual positioning and installation methods are prone to problems such as fabric positioning deviation and displacement, failing to fully utilize the reinforcing fabric's role and making it difficult to effectively solve the quality problems of the outer arc surface of the segments. Utility Model Content
[0003] The purpose of this invention is to provide a positioning and laying device for reinforcing fabric on the outer arc surface of tunnel segments, in order to solve the technical problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A positioning and paving device for reinforcing fabric on the outer arc surface of a tunnel segment includes a positioning frame for mounting on one side of a concrete segment in a tunnel, multiple fabric fixing components mounted on the positioning frame, and auxiliary fixing components mounted on the positioning frame. The positioning frame is a lightweight beam with a rod-like structure and graduations along its length. The fabric fixing components are fixing cones, with multiple fixing cones evenly spaced along the length of the positioning frame. Each fixing cone includes a cone head, a cone middle, and a cone tail arranged sequentially. The cone middle is an adjustment section and has threads. The positioning frame has multiple threaded holes evenly spaced, and the cone middle is threadedly connected to the threaded holes of the positioning frame. The cone tail has a barbed hook at its end. The auxiliary fixing components include multiple magnets mounted at both ends of the positioning frame.
[0005] Furthermore, the barbed hook includes a hook and an anti-detachment component disposed at the upper end of the hook opening for fixing one side of the reinforcing fabric. The anti-detachment component includes a baffle and a first spring. The upper end of the baffle is hinged to the upper end of the hook opening via a pin, and the lower end of the baffle is completely closed at the lower end of the hook opening. The first spring is disposed at the pin connection.
[0006] Furthermore, the positioning frame is provided with multiple fluorescent markers along its length, with the fluorescent markers spaced 100mm apart.
[0007] Furthermore, the positioning frame is provided with multiple through-type weight reduction grooves in the middle, and the cross-sectional dimensions of the through-type weight reduction grooves are 50*30mm.
[0008] Furthermore, the positioning frame is made of aluminum alloy.
[0009] Furthermore, the cone head has a triangular blade structure.
[0010] Furthermore, the positioning frame is equipped with handles at both ends.
[0011] Compared with the prior art, this utility model has the following features and beneficial effects: This invention features a positioning frame for mounting on one side of a concrete segment in a tunnel boring machine (TBM), multiple fabric fixing components mounted on the positioning frame, and auxiliary fixing components also mounted on the positioning frame. The positioning frame fits snugly against the outer arc surface of the TBM segment, and with its markings, it achieves precise positioning of the reinforcing fabric on the outer arc surface of the TBM segment, ensuring accurate installation of the reinforcing fabric with minimal lateral deviation, effectively improving the quality of the reinforcing fabric installation. The fixing cone in the reinforcing fabric positioning components is adjustable, allowing for flexible adjustment of the cone's extension length according to different specifications of reinforcing fabric and the requirements of the TBM segment, adapting to various working conditions and improving the versatility of the device. The magnetic blocks in the fixing components provide auxiliary fixation for the positioning frame, effectively preventing displacement during paving and ensuring the stability of the reinforcing fabric positioning. The device has a simple structure and is easy to operate, enabling rapid positioning and paving of the reinforcing fabric. Compared with traditional manual positioning methods, it significantly shortens construction time and improves the production efficiency of shield tunnel concrete segments. By precisely positioning and paving the reinforcing fabric, it can effectively reduce the generation of micro-cracks on the outer arc surface of shield tunnel concrete segments, significantly improve crack resistance and seepage prevention performance, extend service life, and ensure the quality and safety of shield tunnel projects. It has the characteristics of safety and applicability, has good promotion and practical value, and its widespread application will generate good economic benefits. Attached Figure Description
[0012] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a side view sectional structural diagram of the present invention.
[0013] Reference numerals: 1. Concrete segment of shield tunnel; 2. Positioning frame; 3. Fixing cone; 4. Inverted hook; 5. Magnet block; 6. Baffle; 7. Handle. Detailed Implementation
[0014] To make the technical means, innovative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.
[0015] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model. They are all illustrative and exemplary, and should not be construed as limiting the implementation methods or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.
[0016] This utility model discloses a positioning and laying device for reinforcing fabric on the outer arc surface of tunnel segment, such as... Figure 1 and Figure 2As shown, the system includes a positioning frame 2 for mounting on one side of the concrete segment 1 of the shield tunnel, multiple fabric fixing components mounted on the positioning frame 2, and auxiliary fixing components mounted on the positioning frame 2. The positioning frame 2 is a lightweight beam with a rod-like structure, adapted to the outer arc surface of the concrete segment 1 of the shield tunnel. The positioning frame 2 is made of aluminum alloy, and multiple through-type weight-reducing grooves are provided in the middle of the positioning frame 2. The cross-sectional dimensions of the through-type weight-reducing grooves are 50*30mm. Both ends of the positioning frame 2 are equipped with handles 7, which facilitate two people to lift and lower the positioning frame 2 from both ends. The positioning frame 2 has 0.5mm precision graduations along its length, with fluorescent markings every 100mm. A fabric fixing component is used to secure the reinforcing fabric. This component consists of fixing cones 3, made of 304 stainless steel. Multiple fixing cones 3 are evenly spaced along the length of the positioning frame 2. Each fixing cone 3 includes a cone head, a cone middle, and a cone tail arranged sequentially. The cone head has a 15-degree angled triangular blade structure to reduce resistance when driven into concrete. The cone middle is an adjustment section with an M8 thread. The positioning frame 2... Multiple threaded holes are evenly spaced, and the middle part of the cone is threadedly connected to the threaded hole of the positioning frame 2, which can realize the extension length adjustment of 250~80mm relative to the positioning frame. The tail of the cone is round rod-shaped, and the end of the tail of the cone is provided with a barbed hook 4. The barbed hook 4 includes a hook and an anti-detachment component set at the upper end of the hook opening. One side of the reinforcing fabric can be hung on the anti-detachment component to achieve the initial positioning of the reinforcing fabric. The anti-detachment component includes a baffle 6 and a first spring. The upper end of the baffle 6 is hinged to the upper end of the hook opening by a pin, and the lower end of the baffle 6 is completely closed in the hook. At the lower end of the hook opening, the first spring is set at the pin connection to prevent the reinforcing fabric from falling off. The auxiliary fixing component includes multiple magnet blocks 5, which are made of neodymium iron boron. The magnet blocks 5 are located at both ends of the positioning frame 2 and are compatible with the material of the shield tunnel concrete segment 1 model. The magnet blocks 5 are used to attract the steel mold of the shield tunnel concrete segment 1. When the positioning frame 2 is placed on the shield tunnel concrete segment 1, the magnet blocks 5 can be attracted to the model by magnetic force to prevent the positioning frame 2 from sliding horizontally and increase the stability of the device.
[0017] During construction, after the concrete segment 1 of the shield tunnel is poured and vibrated and the first rough finishing is completed, one side of the reinforcing fabric is hung sequentially on the hook-type hook 4 of the fixing cone 3 on the positioning frame 2. Then, two construction workers lift the positioning frame 2 and accurately place it at the corresponding position on the outer arc surface of the shield tunnel concrete segment 1 model according to the scale on the positioning frame 2. Next, the fixing cone 3 is inserted downwards into the concrete, and the magnet 5 at the bottom of the positioning frame 2 is attracted to the shield tunnel concrete segment 1 model, further stabilizing the positioning frame 2. After that, the construction workers manually pull the other side of the reinforcing fabric to make it evenly spread on the outer arc surface of the shield tunnel concrete segment 1. After the reinforcing fabric is laid, the finishing and pressing operations are carried out to press the reinforcing fabric into the concrete slurry of the shield tunnel concrete segment 1. Finally, the fixing cone 3 is pulled out, the positioning frame 2 is removed, and the holes left by the fixing cone 3 are finished.
[0018] This invention features a positioning frame for mounting on one side of a concrete segment in a tunnel boring machine (TBM), multiple fabric fixing components mounted on the positioning frame, and auxiliary fixing components on the positioning frame. The positioning frame fits snugly against the outer arc surface of the TBM segment, and with its markings, it achieves precise positioning of the reinforcing fabric on the outer arc surface of the TBM segment. This ensures accurate installation of the reinforcing fabric, with lateral deviations controlled to a minimal range, effectively improving the quality of the reinforcing fabric installation. The fixing cone in the reinforcing fabric positioning component is adjustable, allowing for flexible adjustment of the cone's extension according to different specifications of reinforcing fabric and the requirements of the TBM segment. The device's length adapts to various working conditions, enhancing its versatility. The magnetic blocks in the auxiliary fixing components provide auxiliary fixation of the positioning frame, effectively preventing displacement during installation and ensuring the stability of the reinforcing fabric positioning. The device has a simple structure and is easy to operate, enabling rapid positioning and installation of the reinforcing fabric. Compared to traditional manual positioning methods, it significantly shortens construction time and improves the production efficiency of shield tunnel concrete segments. Precise positioning and installation of the reinforcing fabric effectively reduces the generation of micro-cracks on the outer arc surface of shield tunnel concrete segments, significantly improving crack resistance and seepage prevention performance, extending service life, and ensuring the quality and safety of shield tunnel projects.
[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0020] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A positioning and laying device for reinforcing fabric on the outer arc surface of a tunnel segment, characterized in that: The system includes a positioning frame (2) for placement on one side of a concrete segment (1) in a shield tunnel, multiple fabric fixing components on the positioning frame (2), and auxiliary fixing components on the positioning frame (2). The positioning frame (2) is a lightweight beam with a rod-like structure. The positioning frame (2) has scales engraved along its length. The fabric fixing components are fixing cones (3). Multiple fixing cones (3) are evenly spaced along the length of the positioning frame (2). Each fixing cone (3) includes a cone head, a cone middle, and a cone tail arranged in sequence. The cone middle is an adjustment section and is threaded. The positioning frame (2) has multiple threaded holes evenly spaced. The cone middle is threadedly connected to the threaded holes of the positioning frame (2). The cone tail is provided with a barbed hook (4). The auxiliary fixing components include multiple magnet blocks (5) located at both ends of the positioning frame (2).
2. The shield tunnel segment outer arc surface reinforcement fabric positioning and laying device according to claim 1, characterized in that: The barbed hook (4) includes a hook and an anti-detachment component for fixing one side of the reinforcing fabric, which is provided at the upper end of the hook opening. The anti-detachment component includes a baffle (6) and a first spring. The upper end of the baffle (6) is hinged to the upper end of the hook opening by a pin, and the lower end of the baffle (6) is completely closed at the lower end of the hook opening. The first spring is provided at the pin connection.
3. The shield tunnel segment outer arc surface reinforcement fabric positioning and laying device according to claim 2, characterized in that: The positioning frame (2) is provided with multiple fluorescent markers along its length, with a spacing of 100mm between the fluorescent markers.
4. The shield tunnel segment outer arc surface reinforcement fabric positioning and laying device according to claim 1, characterized in that: The positioning frame (2) is provided with multiple through-type weight reduction grooves in the middle, and the cross-sectional dimensions of the through-type weight reduction grooves are 50*30mm.
5. The shield tunnel segment outer arc surface reinforcement fabric positioning and laying device according to claim 1, characterized in that: The positioning frame (2) is made of aluminum alloy.
6. The shield tunnel segment outer arc surface reinforcement fabric positioning and laying device according to claim 1, characterized in that: The cone head has a triangular blade structure.
7. A shield tunnel segment outer arc surface reinforcement fabric positioning and laying device according to any one of claims 1 to 6, characterized in that: The positioning frame (2) is equipped with handles (7) at both ends.