Relative settlement monitoring device for reconstructed and expanded bridge soft soil foundation and existing roadbed

Abstract

The utility model discloses a relative settlement monitoring device for a reconstructed and expanded bridge soft soil foundation and an existing roadbed, which belongs to the technical field of roadbed settlement monitoring and comprises an extending pipe, the extending pipe penetrates through the soft soil roadbed and is inserted into the existing roadbed, a bending sensor is fixedly mounted on the extending pipe positioned in the soft soil roadbed, and the bending sensor is connected with the extending pipe. An extension plate extending in the radial direction of the extending pipe is fixedly mounted on the extending pipe, and the extension plate is arranged in the direction perpendicular to the sedimentation direction. When settlement occurs, the contact area with the soft soil roadbed is increased through the extension plate, so that the extension plate can be driven to bend when the soft soil roadbed settles, and the extension pipe can be driven to bend more easily so as to ensure the monitoring accuracy.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of roadbed settlement monitoring, and particularly relates to a relative settlement monitoring device for soft soil foundation of reconstruction and expansion bridge and existing roadbed. BACKGROUND

[0002] The soft soil foundation mainly refers to the foundation of newly-built highway viaduct, and has an influence on the existing roadbed when the foundation is excavated, and can cause the existing roadbed to be raised, settled and unstable in severe cases. Therefore, the most prominent problem in the construction of highways on soft soil foundations is the stability and settlement of the roadbed, which affects the construction progress and construction quality. Therefore, the settlement of the roadbed is monitored by using a roadbed settlement observation device during the construction of highways to ensure the construction quality.

[0003] The patent with the publication number CN221725199U in the prior art discloses a highway expansion roadbed settlement measuring device, which judges whether the expansion roadbed is laterally settled by the resistance value of the bending sensor on the sleeve pipe inserted into the expansion roadbed. However, since the sleeve pipe is inserted into the expansion roadbed, the sleeve pipe is bent and deformed only when the expansion roadbed is settled at the part in contact with the sleeve pipe, which can easily cause inaccurate monitoring.

[0004] Therefore, a relative settlement monitoring device for soft soil foundation of reconstruction and expansion bridge and existing roadbed is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a relative settlement monitoring device for soft soil foundation of reconstruction and expansion bridge and existing roadbed to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0007] The utility model provides a relative settlement monitoring device for soft soil foundation of reconstruction and expansion bridge and existing roadbed, which comprises an insertion pipe, the insertion pipe is inserted into the existing roadbed through the soft soil roadbed, a bending sensor is fixedly installed on the insertion pipe in the soft soil roadbed, an extension plate extending in the radial direction of the insertion pipe is fixedly installed on the insertion pipe, and the extension plate is arranged vertically to the settlement direction.

[0008] Further, the insertion pipe is provided with a slot, and the extension plate is fixedly inserted into the slot.

[0009] Further, the slot is arranged in the radial direction through the insertion pipe.

[0010] Further, the insertion pipe comprises a fixed section and a deformation section coaxially connected with the fixed section, the slot is arranged on the deformation section, the fixed section is inserted into the existing roadbed, and the deformation section is arranged in the soft soil roadbed.

[0011] Furthermore, the deformable section is provided with a threaded hole coaxially arranged with the fixed section at the end away from the deformable section. The threaded hole is connected to the slot and is used for threaded connection of the screw.

[0012] The beneficial effects of this utility model are as follows:

[0013] In the event of settlement, this invention increases the contact area with the soft soil subgrade by extending the plate, allowing the plate to bend as the subgrade settles. This, in turn, makes it easier to bend the inserted pipe, thus ensuring the accuracy of monitoring.

[0014] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0016] Figure 1 This is a schematic diagram of the monitoring device structure according to an embodiment of the present utility model;

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 A magnified view of part A in the middle;

[0018] Figure 3 This is a schematic diagram showing the monitoring device in use according to an embodiment of the present invention.

[0019] The following are the markings in the attached diagram: 1. Insertion tube, 101. Slot, 102. Fixed section, 103. Deformable section, 104. Threaded hole, 105. Screw, 2. Soft soil subgrade, 3. Existing subgrade, 4. Bending sensor, 5. Extension plate. Detailed Implementation

[0020] like Figures 1 to 3 As shown, this utility model provides a relative settlement monitoring device for soft soil foundation and existing roadbed of bridge reconstruction and expansion, including: an insertion pipe 1, the insertion pipe 1 passes through the soft soil roadbed 2 and is inserted into the existing roadbed 3, a bending sensor 4 is fixedly installed on the insertion pipe 1 located in the soft soil roadbed 2, and an extension plate 5 extending radially along the insertion pipe 1 is fixedly installed on the insertion pipe 1, the extension plate 5 being arranged perpendicular to the settlement direction.

[0021] In this scheme, the insertion pipe 1 is inserted through the soft soil subgrade 2 and fixed inside the existing subgrade 3. When settlement occurs, the extension plate 5 increases the contact area with the soft soil subgrade 2, so that when the soft soil subgrade 2 settles, the extension plate 5 can bend, which makes it easier to bend the insertion pipe 1, thus ensuring the accuracy of monitoring.

[0022] In one embodiment of this utility model, the insertion tube 1 is provided with a slot 101, and the extension plate 5 is fixedly inserted into the slot 101. This facilitates the installation and removal of the extension plate 5, and allows adjustment of the maximum radial extension displacement of the extension plate 5 along the insertion tube 1, thereby changing the stress range of the extension plate 5.

[0023] In one embodiment of this utility model, the slot 101 is radially through the extension tube 1. During installation, the extension plate 5 is first inserted into the slot 101, and then the extension tube 1 is inserted into the roadbed, ensuring the stability of the extension plate 5.

[0024] In one embodiment of the present invention, the insertion tube 1 includes a fixed section 102 and a deformable section 103 coaxially rotatably connected to the fixed section 102. The slot 101 is disposed on the deformable section 103. The fixed section 102 is inserted into the existing roadbed 3 to fix the insertion tube 1. The deformable section 103 is located in the soft soil roadbed 2.

[0025] In this scheme, the insertion pipe 1 is first inserted into the roadbed so that the fixed section 102 is inserted into the existing roadbed 3 and fixed. The deformable section 103 is set in the soft soil roadbed 2. Then, the deformable section 103 is rotated to adjust the direction of the slot 101. Then, the extension plate 5 is inserted into the soft soil roadbed 2 along the slot 101 so that the axial direction of the extension plate 5 is consistent with the settlement monitoring direction of the soft soil roadbed 2.

[0026] The design of the above structure facilitates the installation of the extension pipe 1, and after the deformation section 103 is rotated by a preset angle according to the settlement monitoring direction, the extension plate 5 is installed.

[0027] In one embodiment of the present invention, the deformable segment 103 is provided with a threaded hole 104 coaxially disposed with the fixed segment 102 at the end of the deformable segment 103. The threaded hole 104 is connected to the slot 101 and is used to thread a screw 105.

[0028] In this scheme, after the extension plate 5 is inserted into the slot 101, since the extension plate 5 is inserted into the soft soil subgrade 2, in order to facilitate the adjustment of the insertion depth of the extension plate 5, a screw 105 is connected inside and outside the threaded hole 104. Then, the screw 105 is rotated to push the extension plate 5 to move axially along the insertion tube 1. At the same time, the screw 105 is used to ensure the axial stability of the extension plate 5 after it is inserted into the slot 101.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A relative settlement monitoring device for soft soil foundation and existing roadbed of a bridge undergoing reconstruction or expansion, comprising an insertion tube that passes through the soft soil roadbed and is inserted into the existing roadbed, characterized in that: A bending sensor is fixedly installed on an extension pipe located within the soft soil subgrade. An extension plate extending radially along the extension pipe is also fixedly installed on the extension pipe, and the extension plate is positioned perpendicular to the settlement direction.

2. The relative settlement monitoring device for soft soil foundation and existing roadbed of the bridge reconstruction and expansion project as described in claim 1, characterized in that: The insertion tube is provided with a slot, and the extension plate is fixedly inserted into the slot.

3. The relative settlement monitoring device for soft soil foundation and existing roadbed of the bridge reconstruction and expansion project as described in claim 2, characterized in that: The slot is radially inserted into the tube.

4. The relative settlement monitoring device for soft soil foundation and existing roadbed of the bridge reconstruction and expansion project according to claim 2, characterized in that: The insertion tube includes a fixed section and a deformable section that is rotatably connected to the fixed section on the same axis. The slot is set on the deformable section. The fixed section is inserted into the existing roadbed. The deformable section is located in the soft soil roadbed.

5. The relative settlement monitoring device for soft soil foundation and existing roadbed of the bridge reconstruction and expansion project according to claim 4, characterized in that: The deformable section is provided with a threaded hole coaxial with the fixed section at the end away from the deformable section. The threaded hole is connected to the slot and is used to thread a screw.

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