Main beam control section deflection change monitoring framework based on continuous rigid frame bridge

Abstract

The utility model discloses a main beam control section deflection change monitoring framework based on a continuous rigid frame bridge. The main beam control section deflection change monitoring framework comprises a bridge span structure, the strain sensor assemblies are fixedly installed on the bridge span structure in a split mode; and the at least one group of static level gauge assembly is fixedly mounted on the bridge span structure in a split manner. The technical problems that in the prior art, the deflection change of the control section of the main beam is monitored only through a static leveling instrument for a long time, and the static leveling instrument is prone to being affected by loosening and vibration of bolts during long-term monitoring and use, so that the safe use state of the main beam is inaccurately evaluated, and the overall function stability and practicability are poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous rigid frame bridge construction in highway engineering, and in particular to a monitoring framework for changes in deflection of a main beam control section based on a continuous rigid frame bridge. Background Art

[0002] In a continuous rigid frame bridge, the main beam is an important load-bearing member of the bridge. Different sections of the main beam will produce a certain longitudinal displacement under the action of vehicles, temperature, foundation displacement, earthquake and wind loads. Among them, the change in the deflection of the main beam control section is an important parameter reflecting the change in the main beam line shape, and is also an important parameter reflecting the safety status of the bridge and conducting internal force status assessment and analysis. It is an important indicator for bridge structure safety early warning. Therefore, systematic long-term monitoring must be carried out for the change in the deflection of the main beam control section.

[0003] In the prior art, the change of the deflection of the control section of the main beam is generally monitored for a long time only with the help of a static level. Since the static level is an instrument that measures the height difference by gravity, it has certain accuracy problems in practical applications. Although the monitoring requirements can be met to a certain extent in the short term by using a static level alone, its overall measurement accuracy is not high in long-term use. In particular, the static level has a high requirement for the vibration-free nature between the instrument and the measuring point during the measurement process, and the problem of loosening of the assembly bolts between the instrument and the bridge is difficult to overcome during long-term use, which can easily lead to increased vibration and inaccurate assessment of the safe use status of the main beam, and the overall functional stability and practicality are poor. Utility Model Content

[0004] To this end, the utility model provides a main beam control section deflection change monitoring architecture based on a continuous rigid frame bridge to solve the technical problems in the prior art of only using a static level to monitor the main beam control section deflection change for a long time, and the static level being easily affected by bolt loosening and vibration during long-term monitoring, resulting in inaccurate assessment of the safe use status of the main beam and poor overall functional stability and practicality.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A monitoring framework for the deflection change of the main beam control section based on a continuous rigid frame bridge, comprising:

[0007] Bridge span structure;

[0008] At least one set of strain sensor components, fixedly installed on the bridge span structure;

[0009] At least one set of static level components, fixedly installed on the bridge span structure;

[0010] The main beam control section deflection change monitoring architecture based on the continuous rigid frame bridge also includes:

[0011] At least two groups of pier column structures are provided, and at least two groups of the pier column structures are fixedly cast and formed on the bridge base pedestal, and at least two groups of the pier column structures are fixedly cast and formed with main beams at the top positions;

[0012] The bridge span structure is arranged as a box beam structure, and the bridge span structure is positioned and assembled at the top position of at least two groups of main beams, and a bridge load surface structure is formed by the bridge span structure.

[0013] On the basis of the above technical solution, the utility model is further described as follows:

[0014] As a further solution of the utility model, the strain sensor assembly is provided with two groups, and the two groups of strain sensor assemblies are respectively fixedly installed in a one-to-one correspondence at the overall middle position of the bridge span structure and a group of bridge span structure positions corresponding to the top of the pier structure near the overall middle position of the bridge span structure;

[0015] The installation positions of the two groups of strain sensor components are both arranged corresponding to the middle position of the main beam.

[0016] As a further solution of the utility model, the strain sensor assembly includes a positioning pin rod, a strain sensor sheet and a sensor body;

[0017] The positioning pins are provided in two groups, and the two groups of positioning pins are respectively correspondingly embedded and fixed inside the box beam of the bridge span structure;

[0018] The two side portions of the strain sensor sheet are fixedly arranged inside the box beam of the bridge span structure through two groups of positioning pins in a one-to-one correspondence;

[0019] The sensor body is fixedly located at the middle position of the strain sensor sheet, and the sensor body is electrically connected to the electric control component through a signal cable.

[0020] As a further solution of the utility model, the strain sensor assembly further includes a protective cover body;

[0021] The protective cover body is fixedly mounted inside the box girder of the bridge span structure, and the protective cover body is correspondingly located at the outer side of the strain sensor sheet and the sensor body.

[0022] As a further solution of the utility model, the static level assembly is provided with several groups, and the several groups of static level assembly are respectively and one by one fixedly installed at the bridge span structure positions corresponding to the tops of at least two groups of pier structures and the bridge span structure positions corresponding to the middle tops of any two adjacent groups of pier structures;

[0023] The installation positions of several groups of the static level instrument components are all arranged corresponding to the middle positions of the main beams.

[0024] As a further solution of the utility model, the static level assembly includes a static level, a liquid pipe, an air pipe and a liquid storage tank;

[0025] The two-port parts of several groups of the static level are connected to the liquid port end and the gas port end of the liquid storage tank through the liquid pipe and the gas pipe respectively and one by one.

[0026] As a further solution of the utility model, the static level assembly further includes a curved support plate, a support plate positioning bolt and an instrument positioning bolt;

[0027] Several groups of the static level instruments are fixedly installed one by one through the curved support plates at the inner positions of the box beams of the bridge span structures corresponding to the tops of at least two groups of the pier structures and at the inner positions of the box beams of the bridge span structures corresponding to the middle tops of any two adjacent groups of the pier structures;

[0028] One side of the curved support plate is fixedly assembled to the inner position of the box girder of the bridge span structure through the support plate positioning bolts, and the other side of the curved support plate is fixedly assembled to the static level through the instrument positioning bolts.

[0029] As a further solution of the utility model, a limited position frame structure is assembled between the support plate positioning bolt and the instrument positioning bolt in a sleeve-type manner.

[0030] As a further solution of the utility model, the limit frame structure includes a support plate bolt limit sleeve, an instrument bolt limit sleeve, and a sleeve connecting rod fixedly connected and arranged between the support plate bolt limit sleeve and the instrument bolt limit sleeve;

[0031] The support plate bolt limiting sleeve and the instrument bolt limiting sleeve are both limiting sleeve structures with hexagonal slots;

[0032] The support plate bolt limiting sleeve is fitted and installed on the outer side of the support plate positioning bolt, and the instrument bolt limiting sleeve is fitted and installed on the outer side of the instrument positioning bolt.

[0033] The utility model has the following beneficial effects:

[0034] This architecture can synchronously monitor the stress and height difference changes of the bridge span structure over a long period of time through the coordination of strain sensor components and static level components, so as to judge the deflection changes of the main beam control section, effectively improving the monitoring and evaluation accuracy of the deflection changes of the main beam control section and its safe use status. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for the implementation methods or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0036] Figure 1 A schematic diagram of the overall assembly structure of a main beam control section deflection change monitoring framework based on a continuous rigid frame bridge provided in an embodiment of the utility model.

[0037] Figure 2 One of the schematic diagrams of the assembly structure of the strain sensor component in the main beam control section deflection change monitoring architecture based on the continuous rigid frame bridge provided in the embodiment of the utility model.

[0038] Figure 3 The second schematic diagram of the assembly structure of the strain sensor component in the main beam control section deflection change monitoring architecture based on the continuous rigid frame bridge provided in the embodiment of the utility model.

[0039] Figure 4 A schematic diagram of the overall assembly structure of a static level assembly in a main beam control section deflection change monitoring architecture based on a continuous rigid frame bridge provided in an embodiment of the utility model.

[0040] Figure 5 A schematic diagram of the assembly structure between the static level assembly and the bridge span structure in the main beam control section deflection change monitoring architecture based on a continuous rigid frame bridge provided in Example 1 of the utility model.

[0041] Figure 6 A schematic diagram of the assembly structure between the static level assembly and the bridge span structure in the main beam control section deflection change monitoring architecture based on a continuous rigid frame bridge provided in Example 2 of the utility model.

[0042] Figure 7 A schematic diagram of the limit sleeve structure of the limit frame structure in the main beam control section deflection change monitoring structure based on the continuous rigid frame bridge provided in Example 2 of the utility model.

[0043] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0044] Pier structure 1; Bridge span structure 2;

[0045] Strain sensor assembly 3: positioning pin rod 31, strain sensor sheet 32, sensor body 33, protective cover body 34, signal cable 35;

[0046] Static level assembly 4: static level 41, liquid pipe 42, air pipe 43, liquid storage tank 44, curved support plate 45, support plate positioning bolt 46, instrument positioning bolt 47;

[0047] The limiting frame structure 5 includes a support plate bolt limiting sleeve 51, an instrument bolt limiting sleeve 52, and a sleeve connecting rod 53. DETAILED DESCRIPTION

[0048] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships shall be deemed to be within the scope of the present invention without substantially changing the technical content.

[0050] Example 1

[0051] like Figures 1 to 5 As shown, the embodiment of the utility model provides a monitoring framework for the deflection change of the main beam control section based on a continuous rigid frame bridge, including a pier structure 1, a bridge span structure 2, a strain sensor assembly 3, a static level assembly 4 and a limit frame structure 5, which is used to use the strain sensor assembly 3 and the static level assembly 4 to cooperate with each other to synchronously monitor the stress and height difference changes of the bridge span structure 2 for a long time, so as to judge the deflection change of the main beam control section, effectively improve the monitoring and evaluation accuracy of the deflection change of the main beam control section and its safe use status, and enhance the overall functional practicality. The specific settings are as follows:

[0052] Please refer to Figure 1 There are at least two groups of pier structures 1, and at least two groups of pier structures 1 are fixedly cast on the bridge base pedestal, and at least two groups of pier structures 1 have main beams fixedly cast at their top positions. The bridge span structure 2 is set as a box beam structure, and the bridge span structure 2 is positioned and assembled at the top positions of at least two groups of main beams, so as to effectively form a predetermined bridge load surface structure by utilizing the bridge span structure 2.

[0053] Please continue to refer to Figure 1 , there are two groups of strain sensor assemblies 3, and there are several groups of static level assemblies 4; wherein, the two groups of strain sensor assemblies 3 are respectively and one by one fixedly installed at the overall middle position of the span structure 2 and a group of span structure 2 positions corresponding to the top of the pier structure 1 close to the overall middle position of the span structure 2, and the installation positions of the two groups of strain sensor assemblies 3 are all set corresponding to the middle position of the main beam; several groups of static level assemblies 4 are respectively and one by one fixedly installed at the span structure 2 positions corresponding to the tops of at least two groups of pier structures 1 and the span structure 2 positions corresponding to the middle tops of any two adjacent groups of pier structures 1, and the installation positions of several groups of static level assemblies 4 are all set corresponding to the middle position of the main beam.

[0054] For details, please refer to Figure 2 and Figure 3 The strain sensor assembly 3 includes a positioning pin 31, a strain sensor sheet 32, a sensor body 33, a protective cover 34 and a signal cable 35; wherein the positioning pin 31 is provided with two groups, and the two groups of positioning pins 31 are respectively correspondingly buried and fixed inside the box beam of the bridge span structure 2; the two sides of the strain sensor sheet 32 ​​are respectively fixedly provided inside the box beam of the bridge span structure 2 through the two groups of positioning pins 31; the sensor body 33 is fixedly located in the middle position of the strain sensor sheet 32, and the sensor body 33 is electrically connected to the electronic control component through the signal cable 35; it is used to enable the stress deformation of the bridge span structure 2 to be transmitted to the strain sensor 32 through the positioning pin rod 31 to generate deformation, and then the sensor body 33 sends the deformation data of the strain sensor 32 to the electronic control component in real time through the signal cable 35; the protective cover body 34 is fixedly assembled inside the box girder of the bridge span structure 2, and the protective cover body 34 is correspondingly located on the outer side of the strain sensor 32 and the sensor body 33, so as to significantly improve the protection performance.

[0055] Please refer to Figure 4 and Figure 5 The static level assembly 4 includes a static level 41, a liquid pipe 42, an air pipe 43, a liquid storage tank 44, a curved support plate 45, a support plate positioning bolts 46 and an instrument positioning bolts 47; wherein, the static level 41 is provided with several groups, and the two end parts of the several groups of static levels 41 are respectively connected and arranged one by one with the liquid port end and the air port end of the liquid storage tank 44 through the liquid pipe 42 and the air pipe 43, so as to effectively realize the established monitoring function of the static level 41.

[0056] Several groups of static levels 41 are fixedly installed one by one through the curved support plates 45 at the internal positions of the box beams of the bridge span structure 2 corresponding to the tops of at least two groups of the pier structures 1 and the internal positions of the box beams of the bridge span structure 2 corresponding to the middle tops of any two adjacent groups of the pier structures 1. One side of the curved support plate 45 is fixedly assembled at the internal position of the box beam of the bridge span structure 2 through the support plate positioning bolts 46, and the other side of the curved support plate 45 is fixedly assembled and connected to the static level 41 through the instrument positioning bolts 47, so as to achieve stable mounting of the static level 41.

[0057] Example 2

[0058] In Example 2, the same symbols are given to the same structures as in Example 1, and the same descriptions are omitted. Example 2 is an improvement on Example 1.

[0059] Please refer to Figure 6 and Figure 7 In order to effectively reduce the possibility of nut loosening between the support plate positioning bolt 46 and the instrument positioning bolt 47, a limiting frame structure 5 is also sleeve-assembled between the support plate positioning bolt 46 and the instrument positioning bolt 47; specifically, the limiting frame structure 5 includes a support plate bolt limiting sleeve 51, an instrument bolt limiting sleeve 52 and a sleeve connecting rod 53; wherein, the support plate bolt limiting sleeve 51 and the instrument bolt limiting sleeve 52 are both limiting sleeve structures with hexagonal inner grooves, and the support plate bolt limiting sleeve 51 is sleeve-assembled on the outer side of the support plate positioning bolt 46, and the instrument bolt limiting sleeve 52 is sleeve-assembled on the outer side of the support plate positioning bolt 46, and the instrument bolt limiting sleeve 52 is sleeve-assembled on the outer side of the support plate positioning bolt 46. On the outer side of the instrument positioning bolt 47, the sleeve connecting rod 53 is fixedly connected between the support plate bolt limiting sleeve 51 and the instrument bolt limiting sleeve 52; it is used to form the support plate positioning bolts 46 and the instrument positioning bolts 47 in different directions based on the curved design of the curved support plate 45, and then the mutual constraint between the support plate bolt limiting sleeve 51 and the instrument bolt limiting sleeve 52 can be utilized to effectively limit the assembly nuts of the support plate positioning bolts 46 and the assembly nuts of the instrument positioning bolts 47, thereby significantly reducing the problem of loosening of the assembly bolts and nuts due to long-term assembly and use, thereby reducing the structural vibration and improving the overall functional stability and practicality.

[0060] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A monitoring framework for the deflection change of the main beam control section based on a continuous rigid frame bridge, characterized in that: include: Bridge span structure; At least one set of strain sensor components, fixedly mounted on the bridge span structure; At least one set of static level components, fixedly installed on the bridge span structure; The main beam control section deflection change monitoring architecture based on the continuous rigid frame bridge also includes: At least two groups of pier column structures are provided, and at least two groups of the pier column structures are fixedly cast and formed on the bridge base pedestal, and at least two groups of the pier column structures are fixedly cast and formed with main beams at the top positions; The bridge span structure is arranged as a box beam structure, and the bridge span structure is positioned and assembled at the top position of at least two groups of main beams, and a bridge load surface structure is formed by the bridge span structure.

2. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 1 is characterized in that: The strain sensor components are provided in two groups, and the two groups of strain sensor components are respectively fixedly installed in a one-to-one correspondence at the overall middle position of the bridge span structure and a bridge span structure position corresponding to the top of the pier structure near the overall middle position of the bridge span structure; The installation positions of the two groups of strain sensor components are both arranged corresponding to the middle position of the main beam.

3. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 2 is characterized in that: The strain sensor assembly includes a positioning pin rod, a strain sensor sheet and a sensor body; The positioning pins are provided in two groups, and the two groups of positioning pins are respectively correspondingly embedded and fixed inside the box beam of the bridge span structure; The two side portions of the strain sensor sheet are fixedly arranged inside the box beam of the bridge span structure through two groups of positioning pins in a one-to-one correspondence; The sensor body is fixedly located at the middle position of the strain sensor sheet, and the sensor body is electrically connected to the electric control component through a signal cable.

4. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 3 is characterized in that: The strain sensor assembly also includes a protective cover body; The protective cover body is fixedly mounted inside the box girder of the bridge span structure, and the protective cover body is correspondingly located at the outer side of the strain sensor sheet and the sensor body.

5. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 2 is characterized in that: The static level assembly is provided in several groups, and the several groups of static level assembly are respectively and one by one fixedly installed at the bridge span structure positions corresponding to the tops of at least two groups of pier structures and the bridge span structure positions corresponding to the middle tops of any two adjacent groups of pier structures; The installation positions of several groups of the static level instrument components are all arranged corresponding to the middle positions of the main beams.

6. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 5 is characterized in that: The static level assembly includes a static level, a liquid pipe, an air pipe and a liquid storage tank; The two-port parts of several groups of the static level are connected to the liquid port end and the gas port end of the liquid storage tank through the liquid pipe and the gas pipe respectively and one by one.

7. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 6 is characterized in that: The static level assembly also includes a curved support plate, a support plate positioning bolt and an instrument positioning bolt; Several groups of the static level instruments are fixedly installed one by one through the curved support plates at the inner positions of the box beams of the bridge span structures corresponding to the tops of at least two groups of the pier structures and at the inner positions of the box beams of the bridge span structures corresponding to the middle tops of any two adjacent groups of the pier structures; One side of the curved support plate is fixedly assembled to the inner position of the box girder of the bridge span structure through the support plate positioning bolts, and the other side of the curved support plate is fixedly assembled to the static level through the instrument positioning bolts.

8. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 7 is characterized in that: A limited position frame structure is assembled between the support plate positioning bolt and the instrument positioning bolt in a sleeve-type manner.

9. The main beam control section deflection change monitoring framework based on the continuous rigid frame bridge according to claim 8 is characterized in that: The limiting frame structure includes a support plate bolt limiting sleeve, an instrument bolt limiting sleeve, and a sleeve connecting rod fixedly connected and arranged between the support plate bolt limiting sleeve and the instrument bolt limiting sleeve; The support plate bolt limiting sleeve and the instrument bolt limiting sleeve are both limiting sleeve structures with hexagonal slots; The support plate bolt limiting sleeve is fitted and installed on the outer side of the support plate positioning bolt, and the instrument bolt limiting sleeve is fitted and installed on the outer side of the instrument positioning bolt.

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