Transverse diaphragm reinforcing device used during integral jacking of concrete T-beam
By combining the modularly designed bolted fixed frame beams and prestressed steel strands with real-time monitoring, the problem of loosening and damage of the transverse diaphragms during the overall jacking of the concrete T-beam bridge was solved, achieving precise control and safe reinforcement of the bridge.
Patent Information
- Application Number
- CN202520318332.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-26
AI Technical Summary
During the overall jacking process of a concrete T-beam bridge, the diaphragms are susceptible to uneven loads, which can lead to loosening, deformation, or even damage. Existing reinforcement methods have problems such as long construction periods, high labor intensity, and difficulty in guaranteeing reinforcement effects, which can affect traffic safety, especially on bridges with heavy traffic.
The modular design of the bolted fixed frame beam, horizontal displacement adjustment mechanism, prestressed steel strands, and monitoring mechanism forms a closed-loop control system. The bolted fixed frame beam provides rigid support, the horizontal displacement adjustment mechanism achieves precise displacement control, the prestressed steel strands balance the jacking stress, and the monitoring mechanism provides real-time feedback of construction parameters.
It enables precise control of the bridge superstructure during the jacking process, avoids loosening and damage of the diaphragms, improves construction safety and efficiency, and is highly adaptable to various types of concrete T-beam bridges.
Smart Images
Figure CN223824056U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bridge construction and maintenance technical field, especially relate to a concrete T beam whole jacking when diaphragm plate reinforcing device. BACKGROUND
[0002] With the rapid development of China's transportation infrastructure construction, a large number of existing concrete bridges are facing problems such as insufficient bearing capacity, limited clearance under the bridge, etc. Concrete T beam bridge, as a common bridge form, is widely used in transportation infrastructure such as highways and railways. With the increase of service life, the bridge structure may be damaged or aged to varying degrees, and needs to be jacked up for reconstruction. Bridge jacking refers to lifting the entire superstructure of the bridge to a predetermined height by hydraulic jacks and other equipment, providing space for the repair, replacement or reinforcement of the bridge substructure, and ultimately making the bridge meet the requirements of navigation, traffic, etc. However, during the whole jacking process, the diaphragm plate of the bridge superstructure is easily affected by uneven loads, leading to loosening, deformation or even damage, which seriously affects the overall stability and safety of the bridge.
[0003] Currently, the traditional methods for reinforcing the diaphragm plate during the whole jacking process of the concrete T beam bridge include local reinforcement and wrapping steel plates. These methods have the disadvantages of long construction period, high labor intensity, and difficult to guarantee the reinforcement effect. Especially on busy highways or railway bridges, long-term construction will seriously affect traffic and even cause safety accidents. Therefore, there is an urgent need for a new, efficient and safe diaphragm plate reinforcing device and construction control method to solve the above problems. SUMMARY
[0004] To solve the above problems, the utility model provides a diaphragm plate reinforcing device for concrete T beam whole jacking, which is stable in structure, easy to install, and has strong adaptability. It can also monitor the state of the diaphragm plate in real time, effectively solving the problems of easy cracking and insufficient overall stiffness of the diaphragm plate during the T beam jacking process.
[0005] The technical solution of this utility model is as follows: a diaphragm reinforcement device for the overall lifting of a concrete T-beam, installed on the diaphragm between two adjacent T-beams at the top of the pier, comprising multiple bolted fixed frame beams, a horizontal displacement adjustment mechanism, prestressed steel strands, and a monitoring mechanism. The bolted fixed frame beams are composed of high-strength steel bolted together, and their outline matches the T-beam diaphragm. Multiple horizontal connecting beams are provided between two adjacent bolted fixed frame beams. The horizontal displacement adjustment mechanism is located between the bolted fixed frame beams and the web of the T-beam, and is used to adjust the horizontal position of the bolted fixed frame beams relative to the web of the T-beam. The prestressed steel strands are located inside the horizontal connecting beams, and the load-bearing capacity of the diaphragm is enhanced by tensioning the prestressed steel strands. The monitoring mechanism includes stress sensors, displacement sensors, and tilt sensors, which are used to monitor the stress, displacement, and tilt angle of the diaphragm and the bolted fixed frame beams in real time.
[0006] The bolted fixed frame beam includes an upper crossbeam, a vertical support, and a lower crossbeam. The upper and lower crossbeams are located at the top and bottom of two adjacent transverse diaphragms in the longitudinal direction of the bridge, and are in contact with the top and bottom surfaces of the two adjacent transverse diaphragms. The contact surfaces of the upper and lower crossbeams with the transverse diaphragms are provided with anti-slip textures. The vertical support is a telescopic rod, with its upper and lower ends fixedly connected to the upper and lower crossbeams, respectively. Multiple horizontal connecting crossbeams are provided between two adjacent bolted fixed frame beams. Stress sensors are installed at the bottom of the upper and lower crossbeams and the transverse diaphragms. Displacement sensors are installed on the horizontal displacement adjustment mechanism, and tilt sensors are installed on the vertical support.
[0007] The horizontal displacement adjustment mechanism includes a hydraulic jack and a screw. The screw is installed on the side of the bolted fixed frame beam and connected to the vertical support. The hydraulic jack is horizontally supported on the web of the T-beam. The screw pitch is 2mm and is used for fine adjustment of the lateral displacement.
[0008] The prestressed steel strands include prestressed steel strands and anchors. The prestressed steel strands pass through reserved holes in the horizontal connecting beams, and both ends are fixed to the upper and lower beams by anchors. The prestressed steel strands are tensioned using tensioning equipment to apply prestress.
[0009] The monitoring mechanism also includes a data acquisition module and a computer remote monitoring center. The data acquisition module is connected to stress sensors, displacement sensors and tilt sensors respectively to collect and process monitoring data. The computer remote monitoring center receives and analyzes data through the network to realize real-time monitoring and early warning functions.
[0010] The technical advantages of this utility model are as follows: 1. The bolted fixed frame beam of this utility model adopts a modular design. The upper and lower crossbeams and vertical supports are quickly assembled with high-strength bolts, avoiding welding damage to the original structure. The telescopic sleeve structure of the vertical support adapts to different diaphragm heights, enhancing versatility. The structure is simple, easy to install, and highly adaptable, and can be widely used in the jacking operations of various types of concrete T-beam bridges; 2. The horizontal displacement adjustment mechanism of this utility model combines the large stroke adjustment of the hydraulic jack with the fine adjustment function of the screw. The jack provides the initial jacking power, and the screw achieves ±0.1mm level lateral displacement adjustment through a precision thread with a pitch of 2mm. Through the effective cooperation of the jack and the screw adjustment device, the purpose of precise adjustment of the reinforcement device is achieved, which is beneficial to the overall stress of the diaphragm during the jacking of the bridge superstructure; 3. This utility model provides rigid support through a bolted fixed frame, achieves precise displacement control through an adjustable structure, balances the jacking stress through a prestressed steel strand system, and provides real-time feedback of construction parameters through a monitoring mechanism. The four elements work together to form a closed-loop control. It achieved the goal of precise control and effectively solved the problems that the transverse diaphragms of the bridge superstructure are prone to loosening, deformation or even damage during the overall jacking process.
[0011] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description
[0012] Fig. 1 This is a schematic diagram of the installation structure of a transverse diaphragm reinforcement device for the overall lifting of a concrete T-beam according to this utility model.
[0013] Fig. 2 This is a structural schematic diagram of a transverse diaphragm reinforcement device for the overall lifting of a concrete T-beam, according to this utility model.
[0014] Fig. 3 This is a schematic diagram of the working principle of the monitoring mechanism of this utility model.
[0015] Reference numerals: 1- Bolted fixed frame beam, 2- Horizontal displacement adjustment mechanism, 3- Prestressed steel strand, 4- Monitoring mechanism, 5- T-beam web, 6- Diaphragm, 7- Horizontal connecting beam, 8- Stress sensor, 9- Displacement sensor, 10- Inclination sensor, 11- Upper beam, 12- Lower beam, 13- Vertical support, 14- Hydraulic jack, 15- Screw, 16- Prestressed steel strand, 17- Anchorage, 18- Data acquisition module, 19- Computer remote monitoring center. Detailed Implementation Example 1
[0016] like Figs. 1-3As shown, a diaphragm reinforcement device for integral jacking of a concrete T-beam is installed on the diaphragm 6 between two adjacent T-beams at the top of the pier. It includes multiple bolted fixed frame beams 1, a horizontal displacement adjustment mechanism 2, prestressed steel strands 3, and a monitoring mechanism 4. The bolted fixed frame beams 1 are composed of high-strength steel bolts, and their outline matches the T-beam diaphragm. Multiple horizontal connecting beams 7 are provided between two adjacent bolted fixed frame beams 1. The horizontal displacement adjustment mechanism 2 is located between the bolted fixed frame beams 1 and the web 5 of the T-beam, used to adjust the horizontal position of the bolted fixed frame beams 1 relative to the web 5 of the T-beam. The prestressed steel strands 3 are located inside the horizontal connecting beams 7, and tensioning the prestressed steel strands 3 enhances the load-bearing capacity of the diaphragm 6. The monitoring mechanism 4 includes a stress sensor 8, a displacement sensor 9, and an inclination sensor 10, used to monitor the stress, displacement, and inclination of the diaphragm and the bolted fixed frame beams in real time.
[0017] In practical use, this invention utilizes a bolted fixed frame beam 1 to provide rigid support, a horizontal displacement adjustment mechanism 2 to achieve precise displacement control, prestressed steel strands 3 to balance the jacking stress, and a monitoring mechanism 4 to provide real-time feedback of construction parameters. These four elements work together to form a closed-loop control system. This achieves precise control and effectively solves the problems of uneven loads on the transverse diaphragms of the bridge superstructure during the overall jacking process, which can lead to loosening, deformation, or even damage. Example 2
[0018] Based on Embodiment 1, in this embodiment, preferably, the bolted fixed frame beam 1 includes an upper crossbeam 11, a vertical support 13, and a lower crossbeam 12. The upper crossbeam 11 and the lower crossbeam 12 are located at the top and bottom of two adjacent transverse diaphragms 6 in the longitudinal direction of the bridge, and are in contact with the top and bottom surfaces of the two adjacent transverse diaphragms 6. The contact surfaces of the upper crossbeam 11 and the lower crossbeam 12 with the transverse diaphragms 6 are provided with anti-slip textures. The vertical support 13 is a telescopic rod, with its upper and lower ends fixedly connected to the upper crossbeam 11 and the lower crossbeam 12, respectively. Multiple horizontal connecting crossbeams 7 are provided between two adjacent bolted fixed frame beams 1. Stress sensors 8 are installed at the bottom of the upper crossbeam 11, the lower crossbeam 12, and the transverse diaphragms 6. Displacement sensors 9 are installed on the horizontal displacement adjustment mechanism 2, and tilt sensors 10 are installed on the vertical support 13.
[0019] In practical use, the bolted fixed frame beam 1 of this utility model adopts a modular design. The upper crossbeam 11, the lower crossbeam 12 and the vertical support 13 are quickly assembled by high-strength bolts to avoid welding damage to the original structure. The telescopic sleeve structure of the vertical support 13 adapts to different diaphragm heights, enhancing versatility. The structure is simple, easy to install and highly adaptable, and can be widely used in the jacking operation of various types of concrete T-beam bridges. Example 3
[0020] Based on Embodiment 1 or Embodiment 2, in this embodiment, preferably, the horizontal displacement adjustment mechanism 2 includes a hydraulic jack 14 and a screw 15. The screw 15 is installed on the side of the bolted fixed frame beam 1 and is connected to the vertical support 13. The hydraulic jack 14 is horizontally supported on the web plate 5 of the T-beam. The screw pitch of the screw 15 is 2mm, which is used for fine adjustment of the lateral displacement.
[0021] In practical use, the horizontal displacement adjustment mechanism of this utility model combines the large stroke adjustment of the hydraulic jack with the fine adjustment function of the screw. The jack provides the initial lifting power, and the screw achieves ±0.1mm level lateral displacement adjustment through a precision thread with a pitch of 2mm. Through the effective cooperation of the jack and the screw adjustment device, the purpose of precise adjustment of the reinforcement device is achieved, which is beneficial to the overall stress of the transverse diaphragm during the lifting of the bridge superstructure. Example 4
[0022] Based on Embodiment 1 or Embodiment 3, in this embodiment, preferably, the prestressed steel strand 3 includes a prestressed steel strand 16 and an anchor 17. The prestressed steel strand 16 passes through a reserved hole in the horizontal connecting beam 7, and both ends are fixed to the upper beam 11 and the lower beam 12 by the anchor 17. The prestressed steel strand 16 is tensioned using a tensioning device to apply prestress.
[0023] In actual use, the prestressed steel strand 3 includes prestressed steel strands 16 and anchors 17. The prestressed steel strands 16 pass through the reserved holes in the horizontal connecting beam 7, and both ends are fixed to the upper beam 11 and the lower beam 12 by the anchors 17. The prestressed steel strands 16 are tensioned using tensioning equipment to apply prestress. The tensioning actively balances the lifting force and strengthens the overall rigidity of the transverse diaphragm. Example 5
[0024] Based on Embodiment 1 or Embodiment 4, in this embodiment, preferably, the monitoring mechanism 4 further includes a data acquisition module 18 and a computer remote monitoring center 19. The data acquisition module 18 is connected to the stress sensor 8, the displacement sensor 9 and the tilt sensor 10 respectively, and is used to collect and process monitoring data. The computer remote monitoring center 19 receives and analyzes the data through the network to realize real-time monitoring and early warning functions.
[0025] In actual use, the data acquisition module 18 is connected to the stress sensor 8, displacement sensor 9 and tilt sensor 10 respectively to collect displacement, stress and tilt data in real time and feed them back to the computer remote monitoring center 19 to optimize construction parameters and realize real-time monitoring and early warning functions.
[0026] In practical use, this utility model includes the following steps:
[0027] S1. Preparations before construction;
[0028] S2. Clean the surface of the diaphragm 6, check and treat the connection holes to ensure that the holes are unobstructed;
[0029] S3. Install bolted fixed frame beam 1 and horizontal displacement adjustment mechanism 2;
[0030] S4. Apply transverse prestress to the diaphragm 6 through the prestressed steel strands 3;
[0031] S5. Arrange monitoring agencies 4;
[0032] S6. Carry out the overall jacking operation of the bridge superstructure;
[0033] S7. After the jacking is completed, a comprehensive inspection of the bridge is carried out to assess its overall stability and safety. Based on the monitoring data, necessary maintenance and reinforcement are carried out on the bridge.
[0034] The S1 includes the following steps:
[0035] S11. Conduct a comprehensive inspection of the bridge to assess its overall condition and structural safety.
[0036] S12. Measure the geometric dimensions, geometric relationships, and bridge height of the transverse diaphragm 6 at the top of the pier;
[0037] S13. Based on the measured actual data of the bridge, process and manufacture a complete set of diaphragm reinforcement devices.
[0038] The S3 mentioned above includes the following steps:
[0039] S31. Install the upper crossbeam 11 and the lower crossbeam 12 through the pre-drilled holes in the diaphragm.
[0040] S32. Install vertical support 13 and use high-strength bolts to fix the upper and lower crossbeams as a whole;
[0041] S33. Install the horizontal displacement adjustment mechanism 2 to ensure that it fits tightly against the vertical support of the reinforcement device.
[0042] The S5 includes the following steps:
[0043] S51. Install stress sensors 8 at the bottom of the upper crossbeam 11, lower crossbeam 12 and cross diaphragm 6, install displacement sensors 9 on the horizontal displacement adjustment mechanism 2, and install tilt sensors 10 on the vertical support 13.
[0044] S52. Connect the stress sensor 8, displacement sensor 9 and tilt sensor 10 to the data acquisition module 18 and the computer remote control center 19 respectively, test the instruments, and ensure that the monitoring mechanism 4 is working properly.
[0045] The S6 includes the following steps:
[0046] S61. Start the jacking equipment to perform a trial jacking of the bridge superstructure, obtain the overall displacement status of the bridge and the data of the jacking equipment, and provide a basis for the formal bridge jacking.
[0047] S62. Based on the data obtained from the trial jacking, the superstructure of the bridge shall be formally jacked. During the formal jacking, the jacks shall be pressurized step by step until the bridge is jacked to the design height.
[0048] S63. During the jacking process, the monitoring mechanism 4 monitors the status of the diaphragm 6 and the bolted fixed frame 1 in real time. If any abnormality is found, the jacking should be stopped in time, and the jacking should be resumed after the fault is eliminated.
[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. A diaphragm reinforcement device for integral jacking of concrete T-beams, installed on the diaphragm (6) between two adjacent T-beams at the top of the pier, characterized in that: The system includes multiple bolted fixed frame beams (1), a horizontal displacement adjustment mechanism (2), prestressed steel strands (3), and a monitoring mechanism (4). The bolted fixed frame beams (1) are composed of high-strength steel bolts, and their outlines match the crossbeams of the T-beams. Multiple horizontal connecting beams (7) are provided between two adjacent bolted fixed frame beams (1). The horizontal displacement adjustment mechanism (2) is located between the bolted fixed frame beams (1) and the web of the T-beams (5) to adjust the horizontal position of the bolted fixed frame beams (1) relative to the web of the T-beams (5). The prestressed steel strands (3) are located inside the horizontal connecting beams (7) to enhance the load-bearing capacity of the crossbeams (6) by tensioning the prestressed steel strands (3). The monitoring mechanism (4) includes a stress sensor (8), a displacement sensor (9), and an inclination sensor (10) to monitor the stress, displacement, and inclination of the crossbeams and the bolted fixed frame beams in real time.
2. The transverse diaphragm reinforcement device for integral jacking of a concrete T-beam according to claim 1, characterized in that: The bolted fixed frame beam (1) includes an upper crossbeam (11), a vertical support (13), and a lower crossbeam (12). The upper crossbeam (11) and the lower crossbeam (12) are located at the top and bottom of two adjacent transverse diaphragms (6) in the longitudinal direction of the bridge, and are in contact with the top and bottom surfaces of the two adjacent transverse diaphragms (6). The contact surfaces of the upper crossbeam (11) and the lower crossbeam (12) with the transverse diaphragms (6) are provided with anti-slip textures. The vertical support (13) is a telescopic rod, with its upper and lower ends fixedly connected to the upper crossbeam (11) and the lower crossbeam (12) respectively. Multiple horizontal connecting crossbeams (7) are provided between two adjacent bolted fixed frame beams (1). Stress sensors (8) are installed at the bottom of the upper crossbeam (11), the lower crossbeam (12), and the transverse diaphragms (6). A displacement sensor (9) is installed on the horizontal displacement adjustment mechanism (2), and an inclination sensor (10) is installed on the vertical support (13).
3. The transverse diaphragm reinforcement device for integral jacking of a concrete T-beam according to claim 1, characterized in that: The horizontal displacement adjustment mechanism (2) includes a hydraulic jack (14) and a screw (15). The screw (15) is installed on the side of the bolted fixed frame beam (1) and connected to the vertical support (13). The hydraulic jack (14) is horizontally supported on the web plate (5) of the T-beam. The screw (15) has a pitch of 2mm and is used for fine adjustment of the lateral displacement.
4. The transverse diaphragm reinforcement device for integral jacking of a concrete T-beam according to claim 1, characterized in that: The prestressed steel strand (3) includes a prestressed steel strand (16) and an anchor (17). The prestressed steel strand (16) passes through a reserved hole in the horizontal connecting beam (7), and both ends are fixed to the upper beam (11) and the lower beam (12) by the anchor (17). The prestressed steel strand (16) is tensioned using a tensioning device to apply prestress.
5. The transverse diaphragm reinforcement device for integral jacking of a concrete T-beam according to claim 1, characterized in that: The monitoring mechanism (4) also includes a data acquisition module (18) and a computer remote monitoring center (19). The data acquisition module (18) is connected to the stress sensor (8), displacement sensor (9) and tilt sensor (10) respectively, and is used to collect and process monitoring data. The computer remote monitoring center (19) receives and analyzes data through the network to realize real-time monitoring and early warning functions.