A steel formwork for bridge for realizing deformation monitoring

Abstract

This application provides a steel formwork for bridges for deformation monitoring, comprising: a formwork body and strain gauges installed between the interconnected formwork bodies; the formwork body is provided with transverse ribs, and mounting seats are connected to the surfaces of the transverse ribs; both ends of the strain gauges are respectively bolted to the mounting seats on the interconnected formwork bodies. This steel formwork for bridges for deformation monitoring, by installing strain gauges between interconnected formwork bodies and fixing them using mounting seats on the transverse ribs, effectively overcomes the problems of traditional steel formwork rigid design leading to easy deformation, poor real-time performance of manual measurements, and complex and easily damaged sensor installation, achieving real-time and accurate monitoring of deformation at the formwork joints.

Description

Technical Field

[0001] This application relates to the field of steel formwork technology, specifically to a steel formwork for bridges used for deformation monitoring. Background Technology

[0002] During bridge construction, steel formwork serves as a crucial temporary structure for concrete pouring and shaping. Its installation accuracy and stability directly affect the geometric dimensions, surface quality, and structural safety of bridge components.

[0003] Traditional steel formwork for bridges often employs a rigid design, making it prone to micro-deformation under construction loads, concrete lateral pressure, and changes in ambient temperature. This can lead to problems such as misalignment of formwork joints, grout leakage, or dimensional deviations in components. Monitoring formwork deformation is particularly challenging in the construction of long-span or irregularly shaped bridges. Current technologies primarily rely on periodic manual measurements or fixed sensors. However, manual measurements require specific time points and cannot capture the dynamic deformation process in real time. Furthermore, manual measurement is difficult to perform at heights or in complex structural areas, is susceptible to environmental interference, and limits data reliability. While sensors can monitor the deformation process, they are often independently installed, requiring additional wiring or fixing, and are easily damaged during formwork disassembly, reassembly, and reuse. They also struggle to adapt to the complex curved surfaces or irregular shapes of steel formwork. In recent years, some research has attempted to introduce wireless sensing technology and fiber optic monitoring into bridge formwork monitoring, but these generally suffer from high costs, complex installation, and weak anti-interference capabilities, hindering large-scale implementation in practical engineering projects.

[0004] Therefore, there is an urgent need for a steel formwork deformation monitoring device that is compact, highly integrated, real-time, and compatible with construction, in order to improve the accuracy and safety of bridge construction. Utility Model Content

[0005] The purpose of this invention is to provide a steel formwork deformation monitoring device to improve the accuracy and safety of bridge construction.

[0006] This application is achieved through the following technical solution, specifically:

[0007] A steel formwork for bridges for deformation monitoring includes: a formwork body and strain gauges installed between the interconnected formwork bodies; the formwork body is provided with transverse ribs, and mounting seats are connected to the surfaces of the transverse ribs; the two ends of the strain gauges are respectively bolted to the mounting seats on the interconnected formwork bodies.

[0008] In this design, strain gauges are directly installed at the formwork joints, enabling sensitive detection of minute deformations caused by construction loads, concrete lateral pressure, and temperature changes. The strain gauges are securely connected via mounting bases on the transverse ribs, eliminating the need for additional wiring or fixing, thus reducing installation complexity and maintenance costs. This also improves the strain gauges' anti-interference capabilities and lifespan, solving the problem of easy damage associated with traditional sensors. Furthermore, this structural design is integrated with the steel formwork itself, without affecting the formwork's disassembly, assembly, and reuse, exhibiting excellent construction compatibility and enabling real-time, accurate monitoring of deformation at the formwork joints.

[0009] As an improvement to the mounting base in this application, the mounting base includes an anchor plate and at least one stiffening plate, the stiffening plate being connected to one side of the anchor plate, and the anchor plate having a connecting groove.

[0010] As an improvement to the transverse rib in this application, the transverse rib is a hollow structure, and the edge of the transverse rib has an opening for the base of the strain gauge to pass through.

[0011] Furthermore, the aforementioned steel formwork for bridges also includes a splicing component disposed within the transverse rib, wherein the base of the strain gauge passes through the opening and abuts against the surface of the splicing component.

[0012] Furthermore, the splicing component includes a first quick-connect part and a second quick-connect part respectively disposed on the corresponding sides of the interconnected template body, and the first quick-connect part and the second quick-connect part automatically engage through elastic latches.

[0013] Furthermore, the elastic latches of the first quick-connect portion and the second quick-connect portion are centrally symmetrical structures. The elastic latch includes a semi-circular hook tongue and an elastic groove that cooperates with the semi-circular hook tongue. A return spring is provided at the root of the semi-circular hook tongue.

[0014] Furthermore, the mating surface of the splicing component is provided with a guide slope, and the guide slope is at an angle to the contact surface of the semi-circular hook tongue.

[0015] The beneficial effects of this application are as follows:

[0016] This application's solution, by directly installing strain gauges at the formwork joints, can sensitively capture minute deformations caused by factors such as construction loads, concrete lateral pressure, and temperature changes. The strain gauges are securely connected via mounting bases on the transverse ribs, eliminating the need for additional wiring or fixing, thus reducing installation complexity and maintenance costs. Simultaneously, it improves the strain gauges' anti-interference capability and lifespan, solving the problem of easy damage to traditional sensors. Furthermore, this structural design is integrated with the steel formwork itself, not affecting the formwork's disassembly, assembly, and reuse, exhibiting good construction compatibility, and enabling real-time, accurate monitoring of deformation at the formwork joints.

[0017] In addition to the technical problems solved by this utility model, the technical features constituting the technical solution, and the advantages brought about by the technical features of these technical solutions as described above, other technical problems that this utility model can solve, other technical features contained in the technical solution, and the advantages brought about by these technical features will be further explained in detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a steel formwork for bridges used to achieve deformation monitoring, as described in an embodiment of this application.

[0019] Figure 2 This is a cross-sectional structural diagram of the splicing component in the embodiments of this application;

[0020] Figure 3 yes Figure 2 A magnified view of a section of the spliced ​​component.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Template body; 2. Strain gauge; 3. Transverse rib; 31. Mounting base; 311. Anchor plate; 312. Rib plate; 313. Connecting groove; 32. Opening; 4. Splicing component; 41. First quick-connect part; 42. Second quick-connect part; 43. Elastic lock; 431. Semi-circular hook tongue; 432. Elastic groove; 433. Return spring; 44. Guide slope. Detailed Implementation

[0023] The following will be combined with the appendix Figures 1-3 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] In view of the problems existing in the background technology or products, Figure 1 A schematic diagram of a steel formwork for bridges used for deformation monitoring, as shown in an embodiment of this application, is illustrated. Figure 1 As shown, this application provides a steel formwork for bridges for deformation monitoring, including: a formwork body 1 and strain gauges 2 installed between the interconnected formwork bodies 1;

[0025] The template body 1 is provided with transverse ribs 3, and the surface of the transverse ribs 3 is connected to mounting bases 31. The two ends of the strain gauge 2 are respectively connected to the mounting bases 31 on the template body 1 by bolts.

[0026] Specifically, the template body 1 is reinforced with transverse ribs 3 to enhance structural rigidity and form a stable support surface. The transverse ribs 3 are spaced apart along the width direction of the template body 1 and welded to the surface of the template body 1. Mounting seats 31 are welded to the outer surfaces of the transverse ribs at the joints of the template body 1. Preferably, the mounting seat 31 includes an anchor plate 311 and at least one stiffening plate 312. The stiffening plate 312 is connected to one side of the anchor plate 311, and the anchor plate 311 has a connecting groove 313. The strain gauge 2 uses a high-sensitivity resistance strain gauge and is tightly fitted to the template body 1 at the joint through a substrate wrapped around the strain gauge. The connecting terminals extending from both ends of the strain gauge 2 pass through the connecting groove 313 in the anchor plate 311 and are locked to the mounting seat 31 with bolts to form a stable connection structure. When construction loads or concrete lateral pressure act on the template body 1, the minute deformation generated at the joint is directly transmitted to the metal substrate of the strain gauge 2 through the template body 1, causing a change in resistance value and thus achieving strain monitoring.

[0027] In one implementation, the transverse rib 3 is a hollow structure, and the edge of the transverse rib 3 has an opening 32 for the substrate of the strain gauge 2 to pass through.

[0028] Specifically, the hollow transverse ribs 3 reduce the weight of the steel formwork while increasing its structural strength. The design of the opening 32 allows the strain gauge 2 to easily pass through the transverse ribs 3 and directly contact the connection part of the formwork body 1. Furthermore, the transverse ribs 3 can provide a certain degree of protection for the strain gauge 2, making the strain gauge 2 more stable during monitoring and improving its anti-interference ability.

[0029] To improve the measurement accuracy of strain gauge 2, in one implementation, the steel formwork for bridges in this embodiment further includes a splicing component 4 disposed within the transverse rib 3, and the base of strain gauge 2 passes through the opening 32 and abuts against the surface of the splicing component 4.

[0030] Specifically, the splicing component 4 is used to connect the template bodies 1. The most critical deformations in bridge steel templates often occur at the splicing points. The splicing points are where different template bodies 1 are connected, and the stress conditions are complex, making them prone to stress concentration. Installing strain gauges 2 on the splicing component 4 allows for more direct and sensitive detection of minute deformations at these critical locations, thus providing more accurate deformation monitoring data.

[0031] Figure 2 A cross-sectional structural schematic diagram of the splicing component in an embodiment of this application is shown. Figure 3 A partially enlarged view of the assembled components is shown. (For example...) Figure 2 and 3As shown, preferably, the splicing component 4 includes a first quick-connect part 41 and a second quick-connect part 42 respectively disposed on the corresponding sides of the interconnected template body 1, and the first quick-connect part 41 and the second quick-connect part 42 automatically engage through an elastic latch 43.

[0032] Specifically, the structural design of the first quick-connect part 41 and the second quick-connect part 42 allows them to form a stable mating surface during connection, providing a more robust support platform for the strain gauge 2. This effectively transfers load and stress to the strain gauge 2 while reducing the risk of loosening or damage when subjected to external impacts or vibrations, thus improving the measurement accuracy of the strain gauge 2. The application of the elastic locking buckle 43 enables the splicing components 4 to achieve quick and reliable locking during connection, avoiding the cumbersome process of using tools for fixing in traditional splicing methods.

[0033] Preferably, the elastic latches 43 of the first quick-connect part 41 and the second quick-connect part 42 are centrally symmetrical structures. The elastic latches 43 include a semi-circular hook tongue 431 and an elastic groove 432 that cooperates with the semi-circular hook tongue 431. A return spring 433 is provided at the root of the semi-circular hook tongue 431.

[0034] Specifically, the semi-circular design provides a larger contact area, making it easier to accommodate different types of strain gauges 2. When the two template bodies 1 are joined together, the semi-circular hook tongue 431 is pressed and rotated, automatically locking into the elastic groove 432 of the quick-connect part of the other, achieving a self-locking connection.

[0035] Preferably, the mating surface of the splicing component 4 is provided with a guide slope 44, and the guide slope 44 is at an angle to the contact surface of the semi-circular hook tongue 431. This angled design can guide the semi-circular hook tongue 431 to slide into the elastic slot 432 and reduce collision impact, further improving the accuracy and efficiency of splicing.

[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set", "equipped with", "connected", and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A steel formwork for bridges used for deformation monitoring, characterized in that, include: Template body (1) and strain gauge (2) installed between the interconnected template bodies (1); The template body (1) is provided with transverse ribs (3), and the surface of the transverse ribs (3) is connected with mounting bases (31). The two ends of the strain gauge (2) are respectively connected to the mounting bases (31) on the template body (1) by bolts.

2. The steel formwork for bridges as described in claim 1, characterized in that, The mounting base (31) includes an anchor plate (311) and at least one stiffening plate (312), the stiffening plate (312) is connected to one side of the anchor plate (311), and the anchor plate (311) is provided with a connecting groove (313).

3. The steel formwork for bridges as described in claim 1, characterized in that, The transverse rib (3) is a hollow structure, and the edge of the transverse rib (3) has an opening (32) for the substrate of the strain gauge (2) to pass through.

4. The steel formwork for bridges as described in claim 3, characterized in that, It also includes a splicing component (4) disposed within the transverse rib (3), wherein the base of the strain gauge (2) passes through the opening (32) and abuts against the surface of the splicing component (4).

5. The steel formwork for bridges as described in claim 4, characterized in that, The splicing component (4) includes a first quick-connect part (41) and a second quick-connect part (42) respectively disposed on the corresponding side of the interconnected template body (1), and the first quick-connect part (41) and the second quick-connect part (42) automatically engage through an elastic buckle (43).

6. The steel formwork for bridges as described in claim 5, characterized in that, The elastic latches (43) of the first quick-connect part (41) and the second quick-connect part (42) are centrally symmetrical structures. The elastic latches (43) include a semi-circular hook tongue (431) and an elastic groove (432) that cooperates with the semi-circular hook tongue (431). A return spring (433) is provided at the root of the semi-circular hook tongue (431).

7. The steel formwork for bridges as described in claim 6, characterized in that, The splicing component (4) has a guide slope (44) on its mating surface, and the guide slope (44) is at an angle to the contact surface of the semi-circular hook tongue (431).

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