Intelligent temperature self-adaptive pier beam longitudinal bridge direction constraint structure

Abstract

This application relates to an intelligent temperature-adaptive pier-beam longitudinal constraint structure, comprising: a pier on which a main beam is erected; an auxiliary beam, one end of which is connected to the pier and the other end to the main beam, the auxiliary beam being covered with an insulation sleeve, and the auxiliary beam being able to elongate or shorten under temperature influence; and a temperature module comprising a temperature monitoring module, a temperature control module, and a temperature execution module connected in sequence, the temperature monitoring module being disposed on the main beam, and the temperature execution module being connected to the insulation sleeve. By adjusting the temperature of the auxiliary beam through the insulation sleeve, the expansion and contraction of the auxiliary beam is made exactly equal to the expansion and contraction of the main beam, thereby releasing the temperature-induced internal forces of the main beam and pier frame structure. Under other loads, the auxiliary beam can constrain the horizontal deformation of the main beam and pier, allowing the main beam and pier to form a frame structure that shares the load.

Description

Technical Field

[0001] This invention relates to the field of bridge constraint systems, specifically to an intelligent temperature-adaptive pier-beam longitudinal constraint structure. Background Technology

[0002] Currently, bridges are typically structures composed of horizontal main beams and vertical piers. Vertically, the piers support the main beams; longitudinally, simply supported beam bridges and continuous beam bridges only constrain the main beams and one of the piers, continuous steel girder bridges only constrain the main beams and a flexible central pier, and cable-stayed bridges and suspension bridges either do not constrain the main beams and piers or only constrain the main beams and piers through elastic connections of specific stiffness. The reason for this is that if the main beams and all piers are constrained, the frame structure formed by the horizontal main beams and vertical piers will generate enormous thermal forces under the influence of system temperature, making the pier structure difficult to design. If only the main beams and one pier are constrained, the statically determinate structure formed by the horizontal main beams and vertical piers in the longitudinal direction will not have thermal internal forces under the influence of system temperature, but under longitudinal wind and earthquake forces, the horizontal displacement of the beams and the stress on the fixed piers will be significant.

[0003] In related technologies, for bridge structures that require constraint between the main girder and multiple piers, flexible piers or elastic connections with specific stiffness are chosen to balance the demands of temperature forces and other loads. The design of longitudinal constraint between piers and piers is a key and challenging aspect of bridge structural systems. Therefore, finding a suitable longitudinal constraint structure between the main girder and piers is an urgent need to improve the stress distribution of the structure. Summary of the Invention

[0004] This application provides an intelligent temperature-adaptive pier-beam longitudinal restraint structure, which can solve the problem in related technologies where the main beam and all piers are restrained, resulting in temperature forces under the influence of system temperature, and where only the main beam and one pier are restrained, leading to large stresses on the main beam and pier under longitudinal wind and earthquake effects.

[0005] In a first aspect, embodiments of this application provide an intelligent temperature-adaptive pier-beam longitudinal constraint structure, comprising: a pier on which a main beam is erected; an auxiliary beam, one end of which is connected to the pier and the other end to the main beam, the auxiliary beam being covered with an insulation sleeve, the auxiliary beam being able to extend or shorten under temperature; and a temperature module comprising a temperature monitoring module, a temperature control module, and a temperature execution module connected in sequence, the temperature monitoring module being disposed on the main beam, the temperature execution module being connected to the insulation sleeve, and the temperature control module being used to receive signals from the temperature monitoring module and control the temperature execution module to adjust the temperature of the insulation sleeve.

[0006] In conjunction with the first aspect, in one embodiment, the temperature execution module adjusts the temperature change ΔT1 of the insulation sleeve to be greater than the temperature change ΔT2 of the main beam monitored by the temperature monitoring module.

[0007] In conjunction with the first aspect, in one embodiment, the length of expansion and contraction of the auxiliary beam under the influence of system temperature is L1, and the length of expansion and contraction of the main beam under the influence of system temperature is L2; ​​the relationship between the two is: L1 / L2=△T2 / △T1.

[0008] In conjunction with the first aspect, in one embodiment, each of the bridge piers is provided with the auxiliary beam and the temperature module, and the auxiliary beam on each bridge pier is symmetrically arranged along the deformation symmetry axis a of the main beam.

[0009] In conjunction with the first aspect, in one embodiment, the end of the auxiliary beam on each pier that is away from the deformation axis of symmetry a is connected to the main beam.

[0010] In conjunction with the first aspect, in one embodiment, a gap is provided between the auxiliary beam and the insulation sleeve.

[0011] In conjunction with the first aspect, in one embodiment, the temperature execution module connects the gap between the auxiliary beam and the insulation sleeve via a connecting pipe.

[0012] In conjunction with the first aspect, in one embodiment, the axis of the auxiliary beam is arranged along the longitudinal direction of the bridge.

[0013] In conjunction with the first aspect, in one embodiment, the auxiliary beam is arranged parallel to and spaced apart from the top surface of the pier.

[0014] In conjunction with the first aspect, in one embodiment, a first corbel is fixed to the top of the pier, and a second corbel is fixed to the bottom of the main beam; the first corbel is hinged to the auxiliary beam via a first pivot, and the second corbel is hinged to the auxiliary beam via a second pivot.

[0015] The beneficial effects of the technical solutions provided in this application include at least the following:

[0016] By installing extendable or retractable auxiliary beams and temperature-adjustable insulation sleeves between the piers and the main beam, the temperature of the auxiliary beams can be adjusted through the insulation sleeves, ensuring that the expansion and contraction of the auxiliary beams are exactly equal to that of the main beam. This releases the internal temperature forces in the frame structure between the main beam and the pier. Under other loads, the main beam and pier are connected by the auxiliary beams, and the piers are fixed. When the main beam undergoes relative displacement, the auxiliary beams can constrain the horizontal deformation of the main beam and pier, allowing the main beam and pier to form a frame structure that shares the load. This creates a bridge structure that constrains the main beam and multiple piers, releasing internal temperature forces while sharing the load. This solves the problem in related technologies where constraining the main beam and all piers results in temperature forces under system temperature, or where constraining only the main beam and one pier leads to high stress on the main beam and pier under longitudinal wind and seismic forces. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This invention provides an intelligent temperature-adaptive pier-beam longitudinal constraint structure.

[0019] Figure 2 for Figure 1 A magnified structural diagram of A in the diagram.

[0020] In the picture:

[0021] 1. Auxiliary beam; 2. Insulation sleeve; 3. Pier; 4. Main beam; 5. Temperature monitoring module; 6. Temperature control module; 7. Temperature execution module; 8. Connecting pipe; 9. First bracket; 10. Second bracket; 11. First pivot; 12. Second pivot. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0023] This application provides an intelligent temperature-adaptive pier-beam longitudinal restraint structure, which can solve the problem in related technologies where the main beam and all piers are restrained, and temperature forces are generated under the influence of system temperature. In contrast, when only the main beam and one pier are restrained, the main beam and pier are subjected to large forces under longitudinal wind and earthquake effects.

[0024] Figure 1 and Figure 2 This is an intelligent temperature-adaptive pier-beam longitudinal constraint structure, which may include: a pier 3, on which a main beam 4 is erected; an auxiliary beam 1, one end of which is connected to the pier 3 and the other end to the main beam 4, the auxiliary beam 1 being covered with an insulation sleeve 2, the auxiliary beam 1 being able to extend or shorten under temperature; and a temperature module, which includes a temperature monitoring module 5, a temperature control module 6, and a temperature execution module 7 connected in sequence, the temperature monitoring module 5 being arranged on the main beam 4, the temperature execution module 7 being connected to the insulation sleeve 2, and the temperature control module 6 being used to receive the signal from the temperature monitoring module 5 and control the temperature execution module 7 to adjust the temperature of the insulation sleeve 2.

[0025] In this embodiment, a retractable auxiliary beam 1 and an adjustable thermal insulation sleeve 2 are installed between the pier 3 and the main beam 4. The temperature of the auxiliary beam 1 is adjusted by the thermal insulation sleeve 2 so that the expansion and contraction of the auxiliary beam 1 is exactly equal to the expansion and contraction of the main beam 4. This releases the internal temperature force of the frame structure between the main beam 4 and the pier 3. Under other loads, the main beam 4 and the pier 3 are connected by the auxiliary beam 1. The pier 3 is fixed. When the main beam 4 needs to undergo relative displacement, the auxiliary beam 1 can constrain the horizontal deformation of the main beam 4 and the pier 3, allowing the main beam 4 and the pier 3 to form a frame structure to jointly bear the load. This forms a bridge structure that constrains the main beam 4 and multiple piers 3, which can both release the internal temperature force and jointly bear the load.

[0026] See Figure 2 As shown, in some embodiments, the temperature execution module 7 adjusts the temperature change ΔT1 of the insulation sleeve 2 to be greater than the temperature change ΔT2 of the main beam 4 monitored by the temperature monitoring module 5.

[0027] In this embodiment, under the influence of system temperature, the expansion and contraction length of auxiliary beam 1 is less than that of main beam 4. By making ΔT1 greater than ΔT2, the actual temperature of auxiliary beam 1 is higher than the system temperature, thus making the actual expansion and contraction length of auxiliary beam 1 greater than its expansion and contraction length under system temperature. In other words, when main beam 4 expands and contracts a certain distance under the influence of system temperature, the expansion and contraction distance of auxiliary beam 1 under the adjustment of insulation sleeve 2 can offset the expansion and contraction distance of main beam 4, reducing the additional temperature force.

[0028] See Figure 2As shown, in some embodiments, the length of expansion and contraction of the auxiliary beam 1 under the influence of system temperature is L1, and the length of expansion and contraction of the main beam 4 under the influence of system temperature is L2; ​​the relationship between the two is: L1 / L2=△T2 / △T1.

[0029] In this embodiment, the auxiliary beam 1 has a beam length of FLn and a material linear expansion coefficient of αn. Under unit system temperature, the beam length change is L1 = FLn × αn. The distance from the top of the pier 3 to the temperature deformation zero point (deformation symmetry axis a) of the main beam 4, i.e., the temperature span of the main beam 4 at the pier, is Ln. The material linear expansion coefficient of the main beam 4 is α. Under unit system temperature, the length change of the main beam 4 at the pier top is L2 = Ln × α. The temperature change of the insulation sleeve 2 is ΔT1, and the temperature change of the main beam 4 is ΔT2. Then, ΔT1 and ΔT2 must satisfy L1 / L2 = ΔT2 / ΔT1. Under the action of system temperature, the temperature of the auxiliary beam 1 is exactly L2 / L1 times that of the main beam 4. The expansion and contraction of the auxiliary beam 1 is exactly equal to the expansion and contraction of the main beam 4. No additional temperature force is generated in the bridge structure system.

[0030] See Figure 1 and Figure 2 As shown, in some embodiments, each of the bridge piers 3 is provided with the auxiliary beam 1 and the temperature module, and the auxiliary beam 1 and the temperature module on each of the bridge piers 3 are symmetrically arranged along the deformation symmetry axis a of the main beam 4.

[0031] In this embodiment, the deformation symmetry axis a passes through the temperature deformation 0 point of the main beam 4. That is, the main beam 4 deforms with the temperature deformation 0 point as the base point under the action of temperature. By symmetrically setting the auxiliary beams 1 on each pier 3 along the deformation symmetry axis a, the internal forces of temperature in each part of the main beam 4 can be released evenly, and the load can be borne evenly in each part of the main beam 4. By arranging them on multiple piers 3 at the same time, the temperature self-adaptation of multiple piers can be realized simply and conveniently.

[0032] See Figure 2 As shown, in some embodiments, the end of the auxiliary beam 1 on each pier 3 that is away from the deformation axis of symmetry a is connected to the main beam 4.

[0033] In this embodiment, the main beam 4 deforms with the temperature deformation 0 point as the base point under the action of temperature. Theoretically, the main beam 4 will elongate in the direction away from the deformation symmetry axis a, or shorten in the direction closer to the deformation symmetry axis a. The auxiliary beam 1 is hinged to the main beam 4 at the end away from the deformation symmetry axis a. Therefore, the auxiliary beam 1 elongates in the direction away from the deformation symmetry axis a, or shortens in the direction closer to the deformation symmetry axis a. The directions of the two extensions and contractions are exactly the same, so the internal force of temperature can be released through the extension and contraction of the auxiliary beam 1.

[0034] See Figure 2As shown, in some embodiments, a gap is provided between the auxiliary beam 1 and the insulation sleeve 2. In this embodiment, by providing a gap, heat dissipation from the insulation sleeve 2 is facilitated, and the temperature of the auxiliary beam 1 can be easily adjusted.

[0035] See Figure 2 As shown, in some embodiments, the temperature execution module 7 connects the gap between the auxiliary beam 1 and the insulation sleeve 2 via a connecting pipe 8. In this embodiment, the medium used by the temperature execution module 7 to heat the auxiliary beam 1 can be either gas or liquid, and the connection via the connecting pipe 8 facilitates the introduction of the heating medium.

[0036] See Figure 2 As shown, in some embodiments, the axis of the auxiliary beam 1 is set along the longitudinal direction of the bridge. In this embodiment, by setting the auxiliary beam 1 along the longitudinal direction of the bridge, the expansion and contraction direction of the auxiliary beam 1 is also along the longitudinal direction of the bridge. By setting the auxiliary beam 1 on the top of the pier 3 to form a longitudinal constraint with the main beam 4, the temperature change of the auxiliary beam 1 is actively adjusted by the temperature monitoring module 5, the temperature control module 6 and the temperature execution module 7, so that the temperature deformation beams of the auxiliary beam 1 and the main beam 4 are consistent. This can both adapt to the difference in horizontal displacement between the main beam 4 and the pier 3 under the system temperature, thereby releasing the internal temperature force of the frame structure of the main beam 4 and the pier 3, and constrain the horizontal deformation of the main beam 4 and the pier 3 under other loads, so that the main beam 4 and the pier 3 form a frame structure to jointly bear the longitudinal load.

[0037] See Figure 2 As shown, in some embodiments, the auxiliary beam 1 is arranged parallel to and spaced apart from the top surface of the pier 3. In this embodiment, the top surface of the pier 3 is parallel to the bottom surface of the main beam 4. The force transmitted from the main beam 4 to the auxiliary beam 1 is basically in the horizontal direction. By making the axis of the auxiliary beam 1 parallel to the top surface of the pier 3 and the bottom surface of the main beam 4, the auxiliary beam 1 is arranged along its force direction, avoiding the auxiliary beam 1 being subjected to forces dispersed to other directions. This allows for better release of internal forces due to temperature and the formation of a frame to jointly bear the load.

[0038] See Figure 2 As shown, in some embodiments, a first corbel 9 is fixed to the top of the pier 3, and a second corbel 10 is fixed to the bottom of the main beam 4; the first corbel 9 is hinged to the auxiliary beam 1 via a first pivot 11, and the second corbel 10 is hinged to the auxiliary beam 1 via a second pivot 12. In this embodiment, by setting multiple corbels, the connection between the auxiliary beam 1 and the pier 3 and the main beam 4 is facilitated, and the auxiliary beam 1 is kept parallel to the pier 3 and the main beam 4, which facilitates the release of temperature stress and the sharing of load.

[0039] The principle of this invention is as follows: The main beam 4 and the pier 3 are connected in the longitudinal direction of the bridge via an auxiliary beam 1. The auxiliary beam 1 is arranged on the top of the pier 3, with one end hinged to the pier 3 and the other end hinged to the main beam 4. An outer insulation sleeve 2 is installed around the outer periphery of the auxiliary beam 1. The temperature monitoring module 5 includes multiple temperature sensors arranged on the main beam 4 to monitor the system temperature changes of the main beam 4. The temperature control module 6 is located on the top of the pier 3 to receive the system temperature of the main beam 4 monitored by the temperature monitoring module 5, perform analysis and processing, and send execution signals. The temperature execution module 7 is located on the top of the pier 3, and is connected to the auxiliary beam 1 and the insulation sleeve 2. The gaps between the temperature monitoring module 5 and the temperature control module 6 are connected to receive signals from the temperature control module 6, enabling heating and cooling functions. The connections between the temperature monitoring module 5 and the temperature control module 6, and between the temperature control module 6 and the temperature execution module 7, are wireless. The temperature monitoring module 5 monitors the system temperature change ΔT2 of the main beam 4. The temperature control module 6 receives the temperature change ΔT2 and sends it to the temperature execution module 7 as a signal of temperature change L2 / L1*ΔT2. The temperature execution module 7 executes the temperature change L2 / L1*ΔT2 and transmits it to the auxiliary beam 1. Under the influence of the system temperature, the temperature of the auxiliary beam 1 is exactly L2 / L1 times that of the main beam, and the expansion and contraction of the auxiliary beam 1 is exactly equal to the expansion and contraction of the main beam 4. No additional temperature force is generated within the bridge structure system. Under other loads, the main beam 4 and the pier 3 are connected in the longitudinal direction via the auxiliary beam, forming a constrained state that can transmit connection forces. Overall, a temperature-adaptive longitudinal constrained structure is formed.

[0040] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A smart temperature-adaptive pier-beam longitudinal constraint structure, characterized in that, It includes: The pier (3) has a main beam (4) erected on top of it. An auxiliary beam (1) is connected at one end to the pier (3) and at the other end to the main beam (4). The auxiliary beam (1) is covered with an insulation sleeve (2). The auxiliary beam (1) can be extended or shortened under the action of temperature. The temperature module includes a temperature monitoring module (5), a temperature control module (6), and a temperature execution module (7) connected in sequence. The temperature monitoring module (5) is installed on the main beam (4). The temperature execution module (7) is connected to the insulation sleeve (2). The temperature control module (6) is used to receive the signal from the temperature monitoring module (5) and control the temperature execution module (7) to adjust the temperature of the insulation sleeve (2). The axis of the auxiliary beam (1) is parallel to the bottom surface of the main beam (4); The temperature of the auxiliary beam (1) is adjusted by the insulation sleeve (2) so that the expansion and contraction of the auxiliary beam (1) is equal to that of the main beam (4).

2. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 1, characterized in that: The temperature execution module (7) adjusts the temperature change ΔT1 of the insulation sleeve (2) to be greater than the temperature change ΔT2 of the main beam (4) monitored by the temperature monitoring module (5).

3. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 2, characterized in that: The length of expansion and contraction of the auxiliary beam (1) under the action of unit system temperature is L1, and the length of expansion and contraction of the main beam (4) under the action of unit system temperature is L2; The relationship between the two is: L1 / L2 = △T2 / △T1.

4. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 1, characterized in that: Each of the bridge piers (3) is provided with an auxiliary beam (1) and a temperature module, and the auxiliary beam (1) on each of the bridge piers (3) is symmetrically arranged along the deformation symmetry axis a of the main beam (4).

5. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 4, characterized in that: The auxiliary beam (1) on each of the piers (3) is connected to the main beam (4) at one end away from the deformation axis of symmetry a.

6. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 1, characterized in that: A gap is provided between the auxiliary beam (1) and the insulation sleeve (2).

7. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 6, characterized in that: The temperature execution module (7) connects the gap between the auxiliary beam (1) and the insulation sleeve (2) through the connecting pipe (8).

8. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 1, characterized in that: The axis of the auxiliary beam (1) is set along the longitudinal direction of the bridge.

9. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 1, characterized in that: The auxiliary beam (1) is arranged parallel to and spaced apart from the top surface of the pier (3).

10. The intelligent temperature-adaptive pier-beam longitudinal constraint structure as described in claim 1, characterized in that: The pier (3) is fixed with a first corbel (9) at the top and the main beam (4) is fixed with a second corbel (10) at the bottom. The first bracket (9) is hinged to the auxiliary beam (1) via the first pivot (11), and the second bracket (10) is hinged to the auxiliary beam (1) via the second pivot (12).

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