Automatic adjusting support for asynchronous and eccentric construction of segmental beam and using method

Abstract

The invention belongs to the technical field of bridge construction equipment, and particularly provides an automatic adjusting support for asynchronous eccentric construction of a segmental girder and a using method.The TY composite pier comprises a Y-shaped cover beam and a T-shaped pier body, the Y-shaped cover beam is connected to the T-shaped pier body, and the segmental girder is installed on the left portion of the upper face of the Y-shaped cover beam; an automatic adjusting bracket is connected between the Y-shaped bent cap and the T-shaped pier body at the position of the segmental beam; the problems that in the asynchronous eccentric construction process of an existing segmental beam, a traditional support is difficult to adjust accurately to adapt to stress requirements of different segments, linear control of a pier in the construction process is difficult, deviation is prone to occurring, and the overall quality and appearance of a bridge are affected are solved. The pressure borne by the pier body of the pier is kept balanced, eccentricity is avoided, and the construction line shape and quality of the segmental beam are effectively guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge construction equipment, specifically relating to an automatic adjustment support and its usage method for asynchronous eccentric construction of segmental beams. Background Technology

[0002] In bridge construction, monolithic cantilever piers, due to their unique structural characteristics, can effectively increase the span capacity and space utilization of bridges, and are widely used in urban viaducts, large-scale cross-river and cross-sea bridges, and other projects. However, the segmental beam construction of monolithic cantilever piers, especially when using asynchronous eccentric construction techniques, faces many challenges.

[0003] During asynchronous eccentric construction of segmental beams, the stress state of each segment is complex and variable. Traditional supports are difficult to adjust precisely to adapt to the stress requirements of different segments, leading to difficulties in controlling the pier alignment during construction, deviations that easily occur, and affecting the overall quality and appearance of the bridge. Therefore, developing an automatic adjustment support and its application system that can adapt to the asynchronous eccentric construction of integral large cantilever cap beam segmental beams is of great significance for improving construction quality, ensuring construction safety, and increasing construction efficiency.

[0004] Chinese patent document CN205313986U discloses an eccentric lifting device for segmental beams, comprising an upper lifting and adjustment system and a lower segmental beam connection system. The upper lifting and adjustment system includes a pulley block assembly, a connector assembly, an upper hanging frame, and a transverse upper beam. A first transverse sliding track is provided on the upper beam, and the upper hanging frame moves horizontally along the first transverse sliding track. The lower segmental beam connection system includes a hanging beam and a balance beam. A second transverse sliding track is provided at the bottom of the hanging beam, and the balance beam can move horizontally along the second transverse sliding track. The segmental beam to be lifted is suspended and fixed at the bottom of the balance beam. The horizontal movement of the upper hanging frame along the first transverse sliding track and the horizontal movement of the balance beam along the second transverse sliding track ensure that the center of the segmental beam and the hook lifting point of the connector assembly of the upper lifting and adjustment system are on the same vertical line during lifting. This paper achieves eccentric lifting of segmental beams, which improves the efficiency and safety of eccentric segmental beam hoisting operations as a whole. However, it does not solve the problem that traditional supports are difficult to adjust precisely to adapt to the stress requirements of different segments during asynchronous eccentric construction of segmental beams. This leads to difficulties in controlling the alignment of bridge piers during construction, and deviations are prone to occur, affecting the overall quality and appearance of the bridge. Summary of the Invention

[0005] The present invention provides an automatic adjustment support and its usage method for asynchronous eccentric construction of segmental beams. The purpose is to overcome the problem in the prior art that traditional supports are difficult to adjust precisely to adapt to the stress requirements of different segments during asynchronous eccentric construction of segmental beams, which leads to difficulties in controlling the alignment of bridge piers during construction, easy deviations, and affects the overall quality and appearance of the bridge.

[0006] Therefore, the present invention provides an automatic adjustment bracket for asynchronous eccentric construction of segmental beams. The TY composite pier includes a Y-shaped cap beam and a T-shaped pier body. The Y-shaped cap beam is connected to the T-shaped pier body. The segmental beam is installed on the upper left side of the Y-shaped cap beam. An automatic adjustment bracket is connected between the Y-shaped cap beam and the T-shaped pier body at the position of the segmental beam.

[0007] Preferably, the automatic adjustment support includes multiple steel pipe concrete support standard sections and support rods. The multiple steel pipe concrete support standard sections are connected sequentially from top to bottom. Multiple support rods are connected to the highest steel pipe concrete support standard section among the multiple steel pipe concrete support standard sections, and Y-shaped cap beams are connected to the support rods.

[0008] Preferably, an adjuster is provided between the support rod and the standard section of the steel pipe concrete support.

[0009] Preferably, the regulator is a jack.

[0010] Preferably, the automatic adjustment support also includes multiple attachments, and the standard section of the steel pipe concrete support near the TY composite pier is connected to the TY composite pier through multiple attachments.

[0011] Preferably, the plurality of attached walls are spaced apart from top to bottom.

[0012] Preferably, the automatic adjustment bracket further includes multiple tie rods, which are connected between the support rod near the TY composite pier and the TY composite pier.

[0013] Preferably, the automatic adjustment bracket also includes multiple monitors, with multiple monitors connected to the TY composite pier.

[0014] Preferably, concrete is poured into the support rod.

[0015] A method for using an automatically adjusting support based on the aforementioned asynchronous eccentric construction of segmental beams includes the following steps: S1. Install an automatic adjustment bracket between the Y-shaped cap beam and the T-shaped pier at the location of the segmental beam; S2. The monitor monitors the stress on the Y-shaped cap beam and T-shaped pier in real time during construction and transmits the monitoring data to the control system. The control system controls the regulator based on the monitoring data. The regulator adjusts the support rod to keep the pressure on the Y-shaped cap beam and T-shaped pier balanced and prevents eccentricity.

[0016] The beneficial effects of this invention are: This invention provides an automatic adjustment bracket and its usage method for asynchronous eccentric construction of segmental beams. An automatic adjustment bracket is installed between a Y-shaped cap beam and a T-shaped pier at the segmental beam location. A monitor can monitor the stress on the Y-shaped cap beam and T-shaped pier in real time during construction and transmit the monitoring data to a control system. The control system can precisely control the adjuster based on the monitoring data, and the adjuster can precisely adjust the support rod to maintain a balance of pressure on the Y-shaped cap beam and T-shaped pier, preventing eccentricity. This effectively ensures the construction alignment and quality of the segmental beam. The automatic adjustment bracket and its usage method can be flexibly adjusted and configured according to different construction needs, and are applicable to asynchronous eccentric construction of segmental beams with various spans and structural forms of integral large cantilever bridge piers, exhibiting strong versatility and adaptability. The automated operation of the automatic adjustment bracket and its usage method reduces manual intervention, shortens adjustment time, and improves construction efficiency. Simultaneously, the remote monitoring and operation functions of the control system make construction management more convenient and efficient, further accelerating the construction progress. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 This is a structural diagram of an automatically adjusting support for asynchronous eccentric construction of segmental beams.

[0019] Figure 2 This is a diagram of the superstructure during the construction of an automatic adjustment support for asynchronous eccentric construction of segmental beams.

[0020] Explanation of reference numerals in the attached drawings: 1. Standard section of steel pipe concrete support; 2. Wall attachment; 3. Tie rod; 4. Adjuster; 5. Segmental beam; 6. Bridge erecting machine leg; 7. Support rod; 8. Monitor; 9. TY composite pier; 8.1 Pressure sensor; 8.2 Stress sensor; 8.3 Displacement sensor; 9.1 Y-shaped cap beam; 9.2 T-shaped pier body. Detailed Implementation

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0022] Example 1: like Figures 1 to 2As shown, an automatic adjustment bracket for asynchronous eccentric construction of segmental beams is provided. The TY composite pier 9 includes a Y-shaped cap beam 9.1 and a T-shaped pier body 9.2. The Y-shaped cap beam 9.1 is connected to the T-shaped pier body 9.2. A segmental beam 5 is installed on the left side of the upper part of the Y-shaped cap beam 9.1. An automatic adjustment bracket is connected between the Y-shaped cap beam 9.1 and the T-shaped pier body 9.2 at the position of the segmental beam 5.

[0023] Specifically, an automatic adjustment bracket is installed between the Y-shaped cap beam 9.1 and the T-shaped pier 9.2 at the location of segmental beam 5. The automatic adjustment bracket keeps the pressure on the Y-shaped cap beam 9.1 and the T-shaped pier 9.2 balanced by adjustment, preventing eccentricity. This effectively ensures the construction alignment and quality of segmental beam 5. The automatic adjustment bracket of this invention can be flexibly adjusted and configured according to different construction needs. It is suitable for asynchronous eccentric construction of segmental beams of integral large cantilever bridge piers with various spans and different structural forms, and has strong versatility and adaptability.

[0024] Example 2: Based on Embodiment 1, the automatic adjustment support includes multiple steel pipe concrete support standard sections 1 and support rods 7. The multiple steel pipe concrete support standard sections 1 are connected sequentially from top to bottom. The highest steel pipe concrete support standard section 1 is connected to multiple support rods 7, and Y-shaped cap beams 9.1 are connected to the support rods 7.

[0025] Specifically, during construction, segmental beam 5 and the bridge erecting machine's outriggers 6 apply downward pressure to the Y-shaped cap beam 9.1. Multiple standard sections 1 of the steel-concrete composite support system and support rods 7 are used to support the Y-shaped cap beam 9.1. The displacement of the support rods 7 is adjusted by the adjuster 4 to apply an upward force to the Y-shaped cap beam 9.1, ensuring that the Y-shaped cap beam 9.1 and the T-shaped pier 9.2 are stress-balanced, and the construction alignment of segmental beam 5 remains unchanged. The multiple standard sections 1 of the steel-concrete composite support system and support rods 7 are connected as a whole, providing good support stability. The standard section 1 of the steel-concrete composite support system includes multiple vertical rods, horizontal rods, and diagonal braces. The multiple vertical rods are connected by multiple horizontal rods, and the multiple horizontal rods are distributed at intervals from top to bottom. The multiple horizontal rods and vertical rods are connected by multiple diagonal braces, further improving the support stability.

[0026] Preferably, an adjuster 4 is provided between the support rod 7 and the standard section 1 of the steel pipe concrete support.

[0027] Specifically, by adjusting the displacement of the support rod 7 through the adjuster 4, precise vertical lifting and lowering adjustment can be achieved to meet the adjustment requirements of beam segments 5 with different weights. The stress condition of the TY composite pier 9 can be adjusted. The structure is simple and easy to operate.

[0028] Preferably, the regulator 4 is a jack.

[0029] Specifically, the displacement of the support rod 7 can be precisely controlled and highly synchronized by adjusting the jack. Preferably, the jack is an electric hydraulic jack.

[0030] Specifically, the electric hydraulic jack is safe, reliable, and compatible with intelligent monitoring.

[0031] Preferably, the automatic adjustment support also includes multiple attachment walls 2, and the standard section 1 of the steel pipe concrete support near the TY composite pier 9 and the TY composite pier 9 are connected by multiple attachment walls 2. This improves the rigidity and anti-overturning capacity of the connection between the automatic adjustment support and the TY composite pier 9.

[0032] Preferably, the plurality of attached walls 2 are spaced apart from top to bottom.

[0033] Specifically, the top-to-bottom spacing makes the automatic adjustment bracket more evenly stressed and more stable.

[0034] Preferably, the automatic adjustment bracket further includes multiple tie rods 3, which are connected between the support rod 7 on the side near the TY composite pier 9 and the TY composite pier 9. This further improves the stability of the automatic adjustment bracket, enhances its resistance to lateral displacement and overturning, and allows for real-time correction of the alignment of the support rod 7.

[0035] Preferably, the automatic adjustment bracket also includes multiple monitors 8, and multiple monitors 8 are connected to the TY composite pier 9.

[0036] Specifically, multiple monitors 8 facilitate real-time monitoring of the stress on the Y-shaped cap beam 9.1 and the T-shaped pier body 9.2 during the construction process.

[0037] Preferably, the monitor 8 includes a pressure sensor 8.1, a stress sensor 8.2, and a displacement sensor 8.3.

[0038] Specifically, pressure sensors 8.1, stress sensors 8.2, and displacement sensors 8.3 are installed on the automatic adjustment support, the bridge erecting machine leg 6, and the TY composite pier 9 as required to better monitor the stress conditions of the automatic adjustment support, the bridge erecting machine leg 6, and the TY composite pier 9; the pressure sensors 8.1, stress sensors 8.2, and displacement sensors 8.3 are all existing sensors.

[0039] Preferably, the automatic adjustment bracket further includes a control system, which is electrically connected to the monitor 8 and the adjuster 4.

[0040] Specifically, monitor 8 transmits monitoring data to the control system. The control system then controls regulator 4 based on the monitoring data. Regulator 4 adjusts support rod 7 to maintain a balance of pressure on the Y-shaped cap beam 9.1 and the T-shaped pier 9.2, preventing eccentricity. The control system uses an existing controller; its specific structure and data processing methods will not be described in detail here. Wireless communication connects the control system to the monitoring center at the construction site and a remote project management platform, enabling monitoring and control of the automatic adjustment support and the construction process. Through real-time monitoring by monitor 8 and precise control by the control system, the automatic adjustment support can achieve high-precision adjustment of its state, with an adjustment accuracy down to the millimeter level, effectively ensuring the construction alignment and quality of the segmental beam 5.

[0041] Preferably, concrete is poured into the support rod 7 to improve the overall stability and supporting force of the automatic adjustment bracket.

[0042] Example 3: Based on Example 2, a method for using an automatic adjustment support for asynchronous eccentric construction of segmental beams includes the following steps: S1. Install an automatic adjustment bracket between the Y-shaped cap beam 9.1 and the T-shaped pier body 9.2 at position 5 of the segmental beam; Specifically, the construction of the overall large cantilever pier support system mainly includes foundation construction and installation of automatic adjustment supports. The installation of automatic adjustment supports includes pouring concrete into the support rod 7, installing multiple steel pipe concrete support standard sections 1 and support rods 7, and installing jacks between the highest steel pipe concrete support standard section 1 and support rod 7. At the same time, pressure sensors 8.1 are set above the automatic adjustment supports and below the segment beam 5 to monitor the load on the Y-shaped cap beam 9.1 under each working condition in real time, and stress sensors 8.2 are set at the most unfavorable stress position of the TY composite pier 9, i.e., the Y-shaped root of the Y-shaped cap beam 9.1, to monitor the stress of the TY composite pier 9 in real time.

[0043] S2 and Monitor 8 monitor the stress on the Y-shaped cap beam 9.1 and T-shaped pier 9.2 in real time during construction and transmit the monitoring data to the control system. The control system controls the regulator 4 according to the monitoring data. The regulator 4 adjusts the support rod 7 to keep the pressure on the Y-shaped cap beam 9.1 and T-shaped pier 9.2 balanced and prevents eccentricity.

[0044] Specifically, when the segmental beam 5 is hoisted, the control system automatically controls the jacks based on the data fed back by the monitor 8, and makes fine adjustments to the state of the automatic adjustment support to ensure that the integral large cantilever pier is in a balanced state of force.

[0045] Throughout the construction process, construction personnel monitored the status of the automatic adjustment support and the construction process in real time through the monitoring center. When abnormal situations occurred, such as excessive stress on the automatic adjustment support or displacement of TY composite bridge pier 9 exceeding the allowable range, the control system automatically issued an alarm and made adjustments according to the preset emergency response plan to ensure safe construction.

[0046] After construction is completed, the construction data automatically recorded by the control system will be exported for construction quality analysis and scaffold performance evaluation. Analysis of the data will provide a reference for the construction of similar projects in the future.

[0047] This invention automates the operation of the adjustable support system, reducing manual intervention, shortening adjustment time, and improving construction efficiency. Simultaneously, remote monitoring and operation functions make construction management more convenient and efficient, further accelerating the construction progress.

[0048] In the description of this invention, it should be understood that if terms such as "left," "inner," or "right" indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention.

[0049] The above examples are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. An automatic adjustment support for asynchronous eccentric construction of segmental beams, wherein a TY composite pier (9) comprises a Y-shaped cap beam (9.1) and a T-shaped pier body (9.2), the Y-shaped cap beam (9.1) is connected to the T-shaped pier body (9.2), and a segmental beam (5) is installed on the left side of the upper part of the Y-shaped cap beam (9.1), characterized in that: An automatic adjustment bracket is connected between the Y-shaped cap beam (9.1) and the T-shaped pier (9.2) at the location of the segmental beam (5).

2. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 1, characterized in that: The automatic adjustment support includes multiple steel pipe concrete support standard sections (1) and support rods (7). The multiple steel pipe concrete support standard sections (1) are connected sequentially from top to bottom. The highest steel pipe concrete support standard section (1) is connected to multiple support rods (7), and the support rods (7) are connected to Y-shaped cap beams (9.1).

3. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 2, characterized in that: An adjuster (4) is provided between the support rod (7) and the standard section (1) of the steel pipe concrete support.

4. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 2, characterized in that: The regulator (4) is a jack.

5. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 2, characterized in that: The automatic adjustment support also includes multiple attachments (2), and the steel pipe concrete support standard section (1) near the TY composite pier (9) and the TY composite pier (9) are connected by multiple attachments (2).

6. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 5, characterized in that: The multiple wall attachments (2) are distributed at intervals from top to bottom.

7. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 2, characterized in that: The automatic adjustment bracket also includes multiple tie rods (3), which are connected between the support rod (7) on the side near the TY composite pier (9) and the TY composite pier (9).

8. The automatic adjustment support for asynchronous eccentric construction of segmental beams as described in claim 2, characterized in that: The automatic adjustment bracket also includes multiple monitors (8), and multiple monitors (8) are connected to the TY composite pier (9).

9. The automatic adjusting support for asynchronous eccentric construction of segmental beams as described in claim 2, characterized in that: Concrete is poured into the support rod (7).

10. A method for using an automatically adjusting support for asynchronous eccentric construction of segmental beams according to any one of claims 1-9, characterized in that: Includes the following steps: S1. Install an automatic adjustment bracket between the Y-shaped cap beam (9.1) and the T-shaped pier body (9.2) at the position of the segmental beam (5); S2. The monitor (8) monitors the stress on the Y-shaped cap beam (9.1) and T-shaped pier (9.2) during construction in real time and transmits the monitoring data to the control system. The control system controls the regulator (4) according to the monitoring data. The regulator (4) adjusts the support rod (7) to keep the pressure on the Y-shaped cap beam (9.1) and T-shaped pier (9.2) balanced and prevents eccentricity.

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