CN212247920U - Super high fill corrugated steel arch structure - Google Patents

Abstract

The utility model provides an ultra-high fill corrugated steel arch structure, belonging to the technical field of bridge and culvert construction, comprising an outer layer arch structure, an inner layer arch structure, a filler structure, a displacement sensor, a strain sensor and a data transmission module. The structure is set inside the outer arch structure and is used to form a filling space with the outer arch structure; the filling body structure is set in the filling space; the displacement sensor is used to monitor the displacement of the vault of the outer arch structure; the strain sensor is set up. The inner side of the outer arch structure is used to monitor the strain of the corresponding part of the outer arch structure; one end of the data transmission module is electrically connected to the displacement sensor and the strain sensor respectively for transmitting data signals. The utility model has high stability and safety in the whole process of installation, construction and actual use in the super-high fill engineering.

Description

Super high fill corrugated steel arch structure

technical field

The utility model belongs to the technical field of bridge and culvert construction, in particular to a corrugated steel arch structure with super high filling.

Background technique

The soil-covered steel corrugated plate arch bridge is a new type of bridge and culvert structure, which has strong deformation adaptability, and can interact with the surrounding compacted soil, and can mobilize the soil to jointly bear the external load. Compared with the traditional concrete arch ring, the steel corrugated plate structure has the advantages of light weight, simple construction, short construction period, low cost, less disturbance to the foundation and lower requirements for the foundation, and has broad application prospects. When the steel corrugated plate arch bridge has a small span or low overburden, the structure can rely on its own stiffness to meet the design and use requirements of the bridge and culvert. However, in the earth-covered corrugated steel arch structure with ultra-high fill, due to the excessive soil pressure, only relying on the single-layer steel corrugated plate to bear the load may lead to excessive structural deformation, which limits the exertion of soil-structure interaction. The stability and safety of the structure are adversely affected and become unreliable.

Utility model content

The purpose of this utility model is to provide a kind of super high fill corrugated steel arch structure, to solve the existing technology in the prior art that the stability and safety of the single-layer steel corrugated arch structure in the super high fill soil covering are no longer reliable. question.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is to provide a super high-fill corrugated steel arch structure, including an outer layer arch structure, an inner layer arch structure, a filling body structure, a displacement sensor, a strain sensor and a data transmission module , the inner arch structure is set inside the outer arch structure, and is used to form a filling space with the outer arch structure; the filling body structure is set in the filling space; the displacement sensor is used to monitor the displacement of the vault of the outer arch structure The strain sensor is arranged on the inner side of the outer arch structure and is used to monitor the strain of the corresponding part of the outer arch structure; one end of the data transmission module is electrically connected to the displacement sensor and the strain sensor for transmitting data signals.

In an embodiment of the present invention, it further includes a data processing module, a data output module and a data recording module, the data processing module is electrically connected to the other end of the data transmission module for processing data signals; the data output module is connected to the data processing module The electrical connection is used for outputting a data signal or a warning signal; the data recording module is respectively electrically connected with the displacement sensor, the strain sensor and the data transmission module for recording the data signal.

In one embodiment of the present invention, the data output module includes a display or an alarm, and the data transmission module includes a wireless signal transmission module; both the data recording module and the data transmission module are located outside the root of the outer arch structure.

In an embodiment of the present invention, the fixed end of the displacement sensor is arranged inside the dome of the inner arch structure, and the detection end is connected to the inner side of the dome of the outer arch structure, and is used to monitor the dome of the outer arch structure. vertical displacement.

In an embodiment of the present invention, a protective sleeve is provided between the displacement sensor and the filling body structure.

In an embodiment of the present invention, it also includes an arch foundation, which is set on the working surface and is provided with embedded connectors for connecting with the roots on both sides of the outer arch structure and the inner arch structure.

In one embodiment of the present utility model, there are several strain sensors, which are respectively arranged on the inner side of the outer arch structure and the inner side of the inner arch structure; a shear connection is also provided between the outer arch structure and the inner arch structure.

In an embodiment of the present invention, an inner pulling mechanism is further included, and the inner pulling mechanism is connected with the inner arch structure and is used for pulling the inner arch structure inward.

In an embodiment of the present utility model, the inner pulling mechanism includes a plurality of first hooks, uniformly distributed rods and a second hook, and the plurality of first hooks are all arranged inside the inner arch structure, and are arranged in an array along the inner wall of the inner arch structure The evenly distributed rod is used to connect with the first hook on the same busbar of the inner arch structure; the second hook is arranged in the middle of the evenly distributed rod and is used to connect with the driving device that provides the pulling power.

In an embodiment of the present utility model, the inner pulling mechanism further includes a ground hook, a pulling rope and a power assembly, and the ground hook is arranged at the intersection of the symmetry axis of the inner arch structure and the plane where the working surface is located; one end of the pulling rope is connected to the second The hook is connected, and the middle part passes through the ground hook; the power component is connected with the other end of the pull rope, and is used to provide pulling force to the pull rope.

The beneficial effect of the super high-fill corrugated steel arch structure provided by the utility model is: compared with the prior art, the utility model is formed and consolidated through the outer layer arch structure, the inner layer arch structure and the filling body structure, and is The "steel-concrete-steel" structure with good strength can greatly improve the bearing capacity of the overall structure, improve the stability and safety of the structure by making full use of material properties, and monitor and transmit construction through displacement sensors, strain sensors and data transmission modules. The structural deformation during the installation process and in the use state is convenient for controlling the progress and quality of the structure installation and filling construction during the construction process, ensuring the safe and stable construction of the construction, and making the installation, construction and actual use in the super high filling project. The process has high stability and safety.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present utility model. For some novel embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the schematic flow sheet of the construction method of super high fill corrugated steel arch structure provided by the embodiment of the present invention;

FIG. 2 is a schematic elevational structural view of an ultra-high fill corrugated steel arch structure provided by an embodiment of the present utility model;

3 is a schematic cross-sectional structural diagram of an ultra-high fill corrugated steel arch structure provided by an embodiment of the present utility model;

4 is a partial structural schematic diagram of a super high-fill corrugated steel arch structure provided by an embodiment of the present invention;

5 is a schematic cross-sectional structural diagram of a super high-fill corrugated steel arch structure provided by another embodiment of the present invention.

Among them, each reference sign in the figure:

10. Outer arch structure; 20. Inner arch structure; 30. Filler structure;

41. Displacement sensor; 42. Strain sensor;

51. Data transmission module; 52. Data processing module;

53. Data output module; 54. Data recording module;

60. Arch foundation; 61. Embedded connectors;

71, the first hook; 72, the evenly distributed rod; 73, the second hook;

74, ground hook; 75, rope; 76, power components.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

A super high fill corrugated steel arch structure provided by the present utility model will now be described.

Please refer to FIG. 2 to FIG. 4 together. The super high-fill corrugated steel arch structure provided by the present invention includes an outer arch structure 10, an inner arch structure 20, a filler structure 30, a displacement sensor 41, a strain sensor 42 and The data transmission module 51, the inner arch structure 20 is arranged inside the outer arch structure 10, and is used to form a filling space with the outer arch structure 10; the filling body structure 30 is arranged in the filling space; the displacement sensor 41 is used for monitoring The displacement of the dome of the outer arch structure 10; the strain sensor 42 is arranged on the inner side of the outer arch structure 10 to monitor the strain of the corresponding part of the outer arch structure 10; one end of the data transmission module 51 is respectively connected with the displacement sensor 41 and the strain sensor 42 Electrical connection for transmitting data signals.

Compared with the prior art, the ultra-high filled corrugated steel arch structure provided by the present invention is formed into a solidified one by the outer arch structure 10, the inner arch structure 20, and the filling body structure 30, and is well-stressed. Steel-concrete-steel" structure, making full use of material properties, can greatly improve the bearing capacity of the overall structure, improve the stability and safety of the structure, and monitor and transmit construction and installation through the displacement sensor 41, the strain sensor 42 and the data transmission module 51 The structural deformation during the process and use state is convenient for controlling the progress and quality of the structure installation and filling construction during the construction process, ensuring the safe and stable construction of the construction, and making the whole process of installation, construction and actual use in the super high filling project. All have high stability and security.

Please refer to FIG. 3 , as a specific embodiment of the ultra-high-filled corrugated steel arch structure provided by the present invention, it also includes a data processing module 52, a data output module 53 and a data recording module 54, and the data processing module 52 is connected with the data transmission module 52. The other end of the module 51 is electrically connected for processing data signals; the data output module 53 is electrically connected with the data processing module 52 for outputting data signals or warning signals; the data recording module 54 is respectively connected with the displacement sensor 41, the strain sensor 42 and the data The transmission module 51 is electrically connected for recording data signals.

The data output module 53 includes a display or an alarm, the data transmission module 51 includes a wireless signal transmission module; the data recording module 54 and the data transmission module 51 are both located outside the root of the outer arch structure 10 .

Please refer to FIG. 3 , as a specific embodiment of the super high-fill corrugated steel arch structure provided by the present invention, the fixed end of the displacement sensor 41 is arranged inside the dome of the inner layer arch structure 20 , and the detection end is connected to the outer layer arch structure 20 . The inner side of the dome of the structure 10 is connected for monitoring the vertical displacement of the dome of the outer arch structure 10 .

As a specific embodiment of the super high-fill corrugated steel arch structure provided by the present invention, a protective sleeve is provided between the displacement sensor 41 and the filling body structure 30 to prevent the displacement sensor 41 and the filling body structure 30 from being fixed. Knot. The outer side of the strain sensor 42 is provided with a flexible waterproof adhesive sticker, so as to prevent the sensitivity of the strain sensor 42 from being affected while protecting the filling structure 30 of concrete. The inner side of the flexible waterproof adhesive tape is bonded to the strain sensor 42 and the inner wall of the outer arch structure 10, and the strain sensor 42 is enclosed in the middle. The outer side of the flexible waterproof adhesive tape is provided with an expansion strip for slow expansion after absorbing water, and after the concrete solidifies The strain sensor 42 is pressed against the inner wall of the outer arch 10 .

Please refer to FIG. 2 and FIG. 3 together. As a specific embodiment of the super high-fill corrugated steel arch structure provided by the present invention, it also includes an arch foundation 60. The arch foundation 60 is arranged on the working surface and is arranged There are embedded connectors 61 for connecting the roots of both sides of the outer arch structure 10 and the inner arch structure 20 .

Please refer to FIG. 3, as a specific embodiment of the super high-fill corrugated steel arch structure provided by the present invention, there are several strain sensors 42, which are respectively arranged on the inner side of the outer arch structure 10 and the inner side of the inner arch structure 20; A shear connection is also provided between the outer arch structure 10 and the inner arch structure 20 to prevent the arch structure from being severely deformed due to shear damage.

Please refer to FIG. 5 , as a specific embodiment of the super high-fill corrugated steel arch structure provided by the present invention, it also includes an inner pulling mechanism, which is connected to the inner layer arch structure 20 and is used for the inner layer arch structure. 20 Pull inwards.

Please refer to FIG. 5 , as a specific embodiment of the ultra-high-fill corrugated steel arch structure provided by the present invention, the inner pulling mechanism includes several first hooks 71 , uniformly distributed rods 72 and second hooks 73 , and several first hooks 71 are arranged on the inner side of the inner arch structure 20, and are arranged in an array along the inner wall of the inner arch structure 20; 73 is arranged in the middle of the evenly distributed rod 72, and is used to connect with the driving device that provides pulling power.

Please refer to FIG. 5 , as a specific embodiment of the super high-fill corrugated steel arch structure provided by the present invention, the inner pulling mechanism further includes a ground hook 74 , a pulling rope 75 and a power assembly 76 , and the ground hook 74 is provided on the inner layer On the intersection of the axis of symmetry of the arch structure 20 and the plane where the working surface is located; one end of the pull rope 75 is connected to the second hook 73, and the middle part passes through the ground hook 74; the power component 76 is connected to the other end of the pull rope 75, for the pull rope The 75 provides pulling traction.

Further, the construction method using the ultra-high fill corrugated steel arch structure provided by the present utility model for construction will be described.

Please refer to Fig. 1, the construction method of super high fill corrugated steel arch structure provided by the present utility model comprises the following steps:

B. Install the outer arch structure, and install displacement sensors and strain sensors to monitor and feed back the displacement data and strain data of the corresponding parts of the outer arch structure;

C. Install the inner arch structure;

F. Carry out the first stage filling until the displacement data and strain data reach the preset limit standard;

1. Pour concrete between the outer arch structure and the inner arch structure, and wait for the concrete to reach the preset strength;

J. Carry out the second stage filling until the preset standard is reached.

A-J in this document only represents the number of the steps, and is not used to limit the order of the steps.

Compared with the prior art, the construction method of the super-high fill corrugated steel arch structure provided by the utility model detects the shape change of the outer arch structure in the preliminary first stage filling through the preset displacement sensor and the strain sensor until the Displacement data and strain data reach the preset limit standard, which can use the real state of the soil to reflect the construction process, avoid errors caused by manual estimation and calculation, and enable the outer arch structure to accurately reach a suitable preload state, forming a better After the stress state is reached, concrete is poured between the outer arch structure and the inner arch structure to form a "steel-concrete-steel" structure with good outer stress, which can greatly improve the bearing capacity of the structure, and can be more Make full use of the characteristics of structural materials to avoid problems such as concrete cracking caused by large deformation due to excessive earth pressure in the further second-stage filling stage, which is conducive to fully ensuring the structural stability in ultra-high filling projects At the same time, by comparing the displacement data and strain data fed back many times, it is possible to judge whether the construction plan and construction speed are reasonable, which is convenient for quick deviation correction and avoid construction accidents; in addition, the displacement sensor and strain sensor fill in the second stage. The state of the overall arch structure can also be obtained during the stage and the subsequent long-term use process to ensure the stability and safety of the structure.

Please refer to FIG. 1, as a specific embodiment of the construction method of the super high-fill corrugated steel arch structure provided by the present utility model, in step B, the displacement sensor is installed on the inner part of the dome of the outer arch structure, and the displacement data includes the outer Vertical displacement data and horizontal displacement data of the vault of the layer arch structure; there are several strain sensors, which are respectively arranged on the inner side of the outer layer arch structure and the inner side of the inner layer arch structure. Finally, the shape changes of the outer arch structure and the inner arch structure are fully reflected through multi-point and multi-parameter detection, so as to determine the construction state more accurately.

Please refer to FIG. 1 , as a specific embodiment of the construction method of the ultra-high fill corrugated steel arch structure provided by the present invention, in step F, during the first stage filling process, the displacement sensor and the strain sensor monitor in real time and Feedback displacement data and strain data, and calculate the rate of change of displacement data and strain data. Both displacement data and strain data and their rate of change have corresponding limit standards, so as to reflect the construction speed and the rationality of some arrangements in the construction plan .

When one of the displacement data and the strain data reaches the corresponding limit standard, or one of the rate of change of the displacement data and the rate of change of the strain data exceeds the corresponding limit standard, a first warning signal is given to remind the builder to adjust construction strategy. The drastic change of a single parameter may be caused by unreasonable factors in the construction plan and construction speed. Therefore, after monitoring, it is necessary to study the relevant conditions of the construction plan and construction speed, and make adjustments if necessary to avoid further harm.

When the displacement data and strain data all reach the corresponding limit standard, a second warning signal is given to remind the builder to end the first stage of filling. The limit standard can either be calculated in advance according to the construction plan, or adjusted according to the parameter changes during the construction process. When the monitored parameters all reach the corresponding limit standard, it can be shown that the construction has met the progress requirements, and the construction of the next step can be carried out.

Please refer to FIG. 1 , as a specific embodiment of the construction method of the super-high fill corrugated steel arch structure provided by the present utility model, before step F, it also includes the following steps:

E. Preset the filling scheme of the first stage filling, and obtain the change curve of the displacement data and the strain data according to the simulation calculation of the filling scheme;

In step F, the following steps are also included:

The actual change curve of displacement data and strain data is generated and compared with the change curve obtained by simulation calculation. When the difference exceeds the preset range, a third warning signal is given to remind the constructor to check the actual construction situation or adjust the construction strategy.

This method of simulating the construction generation curve according to the construction plan and then using the curve comparison method can intuitively and accurately reflect the actual construction process and the construction plan due to the comprehensive changes of geological conditions, climatic conditions, construction errors and other factors. After the allowable range, it is necessary to study the relevant situation of the construction plan and construction speed, and make adjustments if necessary to ensure the safety of the construction.

Please refer to FIG. 1 , as a specific embodiment of the construction method of the super-high fill corrugated steel arch structure provided by the present utility model, it also includes the following steps:

G. Simulate the shape of the outer arch structure according to the displacement data and strain data, and calculate the optimal shape of the inner arch structure according to the shape of the outer arch structure obtained by the simulation. The shape of the arch structure is set to the optimal shape and the arch structure formed after filling with concrete has the optimal stress state;

H. Use the inner pulling device to exert force in the inner layer arch structure to pull the inner layer arch structure into the state of the above-mentioned optimal shape.

Due to the consolidation of concrete, the inner arch structure will also be gradually deformed by the earth pressure during the second stage of filling. The above steps can apply prestress to the inner arch structure, and simulate the filling through pretension It can avoid concrete cracking caused by excessive stress and deformation of the inner arch structure, and ensure the stability and safety of the structure.

Please refer to FIG. 1 , as a specific embodiment of the construction method of the super-high fill corrugated steel arch structure provided by the present utility model, it also includes the following steps:

A. Divide the arch structure into several sections along the axis of the culvert, and use the sections as units to carry out construction in the following steps to facilitate the construction of large-scale projects. Afterwards, the working face is arranged and the arch structure foundation is poured to fill the ground. Prepare for construction;

D. Install shear connectors between the outer arch structure and the inner arch structure to enhance the connection between the outer arch structure and the inner arch structure, and transfer part of the deformation of the outer arch structure to the inner arch structure to avoid undesired Problems such as local weakness caused by uniform deformation.

Referring to FIG. 1 , in a specific embodiment, the construction method of the super high-fill corrugated steel arch structure provided by the present invention is performed in the order of steps A to J.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of protection.

Claims (10)

1. An ultra-high fill corrugated steel arch structure, comprising:

an outer arch structure;

the inner layer arch structure is arranged in the outer layer arch structure and is used for forming a filling space with the outer layer arch structure;

the filling body structure is arranged in the filling space;

a displacement sensor for monitoring displacement of the dome of the outer arch structure;

the strain sensor is arranged on the inner side of the outer layer arch structure and used for monitoring the strain of the corresponding part of the outer layer arch structure; and

and one end of the data transmission module is electrically connected with the displacement sensor and the strain sensor respectively and is used for transmitting data signals.

2. The ultra-high fill corrugated steel arch structure of claim 1 further comprising:

the data processing module is electrically connected with the other end of the data transmission module and is used for processing data signals;

the data output module is electrically connected with the data processing module and is used for outputting a data signal or a warning signal; and

and the data recording module is respectively and electrically connected with the displacement sensor, the strain sensor and the data transmission module and is used for recording data signals.

3. The ultra-high fill corrugated steel arch structure of claim 2, wherein: the data output module comprises a display or an alarm, and the data transmission module comprises a wireless signal transmission module; the data recording module and the data transmission module are both positioned outside the root of the outer layer arch structure.

4. The ultra-high fill corrugated steel arch structure of claim 1, wherein: the fixed end of the displacement sensor is arranged on the inner side of the arch crown of the inner-layer arch structure, and the detection end of the displacement sensor is connected with the inner side of the arch crown of the outer-layer arch structure and used for monitoring the vertical displacement of the arch crown of the outer-layer arch structure.

5. The ultra-high fill corrugated steel arch structure of claim 4, wherein: and a protective sleeve is arranged between the displacement sensor and the filling body structure.

6. The ultra-high fill corrugated steel arch structure of claim 1 further comprising:

and the arch foundation is arranged on the working surface and is provided with embedded connecting pieces used for being connected with the roots at two sides of the outer layer arch structure and the inner layer arch structure.

7. The ultra-high fill corrugated steel arch structure of claim 1, wherein: the strain sensors are respectively arranged on the inner side of the outer layer arch structure and the inner side of the inner layer arch structure; and a shear connector is also arranged between the outer layer arch structure and the inner layer arch structure.

8. The ultra-high fill corrugated steel arch structure of claim 1 further comprising:

and the inner pulling mechanism is connected with the inner layer arch structure and used for pulling the inner layer arch structure inwards.

9. The ultra-high fill corrugated steel arch structure of claim 8 wherein said internal pulling mechanism comprises:

the first hooks are arranged on the inner side of the inner-layer arch structure and are arranged in an array along the inner wall of the inner-layer arch structure;

the cloth distributing rod is used for being connected with the first hook on the same bus of the inner-layer arch structure;

and the second hook is arranged in the middle of the cloth equalizing rod and is used for being connected with driving equipment for providing pulling power.

10. The ultra-high fill corrugated steel arch structure of claim 9 wherein said internal pulling mechanism further comprises:

the ground hook is arranged on the intersection point of the symmetry axis of the inner-layer arch structure and the plane where the working surface is located;

one end of the pull rope is connected with the second hook, and the middle part of the pull rope penetrates through the ground hook;

and the power assembly is connected with the other end of the pull rope and is used for providing traction force for pulling the pull rope.

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