Early warning equipment for super-large deformation of deep foundation pit in soft soil area

Abstract

The utility model discloses a soft soil area deep foundation pit oversized deformation early warning device which comprises a top plate, the top plate is placed on the top of a deep foundation pit and used for hanging the whole device, the top plate is fixedly connected with a longitudinal shaft rod, the longitudinal shaft rod penetrates through the top plate downwards, and the longitudinal shaft rod is connected with a connecting cylinder in a sliding mode. The deformation of the deep foundation pit in the vertical direction can be reflected more timely by adopting a sliding connection method; and a limiting groove is formed in the connecting cylinder, the longitudinal shaft rod downwards penetrates through the limiting groove, and when the deep foundation pit is settled and collapsed, the connecting cylinder can downwards slide down along the longitudinal shaft rod under the limiting effect of the limiting groove. The two sides of the connecting cylinder are fixedly connected with a plurality of connecting blocks, movable grooves are formed in the connecting blocks, horizontal displacement deformation monitoring can be carried out on the positions of different depths of the deep foundation pit by arranging the connecting blocks, and the comprehensiveness of horizontal displacement deformation monitoring on the deep foundation pit can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of deep foundation pit deformation early warning, and particularly relates to a super-large deformation early warning device for a deep foundation pit in a soft soil area. Background Art

[0002] In my country, some engineering and technical personnel have also conducted in-depth research on the deformation of foundation pits. At present, in China, when carrying out deep foundation pit construction, they generally pay more attention to the deformation monitoring during the foundation pit construction period, and the relevant foundation pit deformation monitoring technology has also been widely used. In order to ensure the safety and stability of the foundation pit during construction and the safety of surrounding buildings, roads, ground wires and pipelines, etc., control values ​​are usually set for specific operation items.

[0003] In conventional foundation pit monitoring, it is usually not possible to perform horizontal displacement deformation monitoring at different depths of deep foundation pits, which cannot ensure the comprehensiveness of horizontal displacement deformation monitoring of deep foundation pits, and it is also impossible to set different horizontal displacement thresholds, which affects the effect of deformation warning. Utility Model Content

[0004] The purpose of the utility model is to provide an early warning device for large deformation of deep foundation pits in soft soil areas, which makes up for the defects in the prior art that horizontal displacement deformation monitoring of different depths of deep foundation pits cannot be performed, the comprehensiveness of horizontal displacement deformation monitoring of deep foundation pits cannot be guaranteed, and different horizontal displacement thresholds cannot be set.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a super-large deformation early warning device for deep foundation pits in soft soil areas, including a top plate, the top plate is fixedly connected with a longitudinal axis rod, the longitudinal axis rod passes through the top plate downward, and the longitudinal axis rod is slidably connected with a connecting tube; a limiting groove is arranged inside the connecting tube, and the longitudinal axis rod passes through the limiting groove downward.

[0006] As a further description of the above technical solution: a plurality of connection blocks are fixedly connected to both sides of the connection tube, and movable grooves are arranged inside the plurality of connection blocks.

[0007] As a further description of the above technical solution: a horizontal displacement sensor is fixedly connected inside the movable groove, and a connecting rod is slidably connected inside the movable groove.

[0008] As a further description of the above technical solution: a horizontal contact plate is fixedly connected to the other side of the connecting rod.

[0009] As a further description of the above technical solution: L-shaped vertical brackets are fixedly connected to both sides of the lower side of the top plate, and vertical displacement sensors are fixedly connected to the L-shaped vertical brackets.

[0010] As a further description of the above technical solution: the end of the connecting tube is fixedly connected to the bottom plate, and the uppermost end of the longitudinal axis is fixedly connected to the alarm.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, the ultra-large deformation early warning device for deep foundation pits in soft soil areas can monitor horizontal displacement deformation at different depths of deep foundation pits by setting multiple connecting blocks, movable grooves, connecting rods, and horizontal contact plates, thereby ensuring the comprehensiveness of horizontal displacement deformation monitoring of deep foundation pits;

[0013] 2. Compared with the existing technology, this ultra-large deformation early warning device for deep foundation pits in soft soil areas sets multiple horizontal displacement sensors at appropriate positions, and can set different horizontal displacement deformation monitoring thresholds at different depths of deep foundation pits, making the device more convenient.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a front view of the overall structure of the utility model.

[0018] Figure 3 It is a side view of the overall structure of the utility model.

[0019] Legend:

[0020] 1. Top plate; 2. Alarm; 3. Longitudinal axis rod; 4. Connecting tube; 5. L-shaped vertical bracket; 6. Connecting block; 7. Movable groove; 8. Horizontal displacement sensor; 9. Connecting rod; 10. Horizontal contact plate; 11. Bottom plate; 12. Vertical displacement sensor; 13. Limiting groove. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-3The utility model provides an embodiment of a super-large deformation early warning device for a deep foundation pit in a soft soil area, comprising a top plate 1, the top plate 1 is placed on the top of the deep foundation pit for suspending the entire device, the top plate 1 is fixedly connected with a longitudinal axis rod 3, the longitudinal axis rod 3 penetrates the top plate 1 downward, and the longitudinal axis rod 3 is slidably connected with a connecting tube 4. The sliding connection method can reflect the deformation of the deep foundation pit in the vertical direction more timely;

[0023] A limiting groove 13 is provided inside the connecting tube 4 , and the longitudinal axis rod 3 passes through the limiting groove 13 downward. When the deep foundation pit sinks and collapses, the connecting tube 4 will slide downward along the longitudinal axis rod 3 under the limiting effect of the limiting groove 13 .

[0024] Several connecting blocks 6 are fixedly connected on both sides of the connecting tube 4, and movable grooves 7 are arranged inside the several connecting blocks 6. By arranging multiple connecting blocks 6, horizontal displacement deformation monitoring can be performed for positions at different depths of the deep foundation pit, which can ensure the comprehensiveness of horizontal displacement deformation monitoring of the deep foundation pit.

[0025] A horizontal displacement sensor 8 is fixedly connected in the movable groove 7, and a connecting rod 9 is slidably connected inside the movable groove 7. By setting the horizontal displacement sensor 8, different horizontal displacement thresholds can be set by setting the horizontal displacement sensor 8 at different positions at different depths of the deep foundation pit, so as to monitor the horizontal displacement deformation of the deep foundation pit according to the actual situation on site.

[0026] A horizontal contact plate 10 is fixedly connected to the other side of the connecting rod 9, and the horizontal contact plate 10 is fitted against the side of the deep foundation pit. When the deep foundation pit undergoes horizontal displacement deformation, a thrust is applied to the horizontal contact plate 10, thereby driving the connecting rod 9 to move into the movable groove 7 until the end of the connecting rod 9 contacts the horizontal displacement sensor 8.

[0027] L-shaped vertical brackets 5 are fixedly connected to both sides of the bottom of the top plate 1 , and vertical displacement sensors 12 are fixedly connected to the L-shaped vertical brackets 5 . The L-shaped vertical brackets 5 are placed inside both sides of the deep foundation pit and below the bottom plate 11 .

[0028] The end of the connecting tube 4 is fixedly connected to a base plate 11, and the uppermost end of the longitudinal axis rod 3 is fixedly connected to an alarm 2. The base plate 11 is kept stable by the support force at the bottom of the deep foundation pit. When the deep foundation pit sinks and collapses, the base plate 11 moves downward. When the base plate 11 contacts the vertical displacement sensor 12, the vertical displacement sensor 12 controls the alarm 2 to sound an alarm. When the end of any connecting rod 9 contacts the horizontal displacement sensor 8, the horizontal displacement sensor 8 controls the alarm 2 to sound an alarm.

[0029] Working principle: When the device is in use, firstly, several horizontal displacement sensors 8 are set at appropriate positions inside the movable groove 7 to set different horizontal displacement deformation monitoring thresholds at different depths of the deep foundation pit. Then, the device is placed in the deep foundation pit, and the top plate 1 is placed on the top of the deep foundation pit to suspend the entire device. By setting multiple connecting blocks 6, the horizontal displacement deformation monitoring of the deep foundation pit at different depths is carried out to ensure the comprehensiveness of the horizontal displacement deformation monitoring of the deep foundation pit. The L-shaped vertical brackets 5 are placed inside the two sides of the deep foundation pit, and the horizontal contact plates 10 are placed inside the deep foundation pit. It fits with the side of the deep foundation pit. When the deep foundation pit undergoes horizontal displacement and deformation, a thrust is applied to the horizontal contact plate 10, thereby driving the connecting rod 9 to move into the movable groove 7 until the end of the connecting rod 9 contacts the horizontal displacement sensor 8. At this time, the horizontal displacement sensor 8 controls the alarm 2 to sound an alarm. When the deep foundation pit sinks and collapses, the connecting tube 4 will slide downward along the longitudinal axis rod 3 under the restriction of the limit groove 13, causing the bottom plate 11 to move downward. When the bottom plate 11 contacts the vertical displacement sensor 12, the vertical displacement sensor 12 controls the alarm 2 to sound an alarm.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A super large deformation early warning device for deep foundation pits in soft soil areas, comprising a top plate (1), characterized in that: The top plate (1) is fixedly connected to a longitudinal shaft rod (3), the longitudinal shaft rod (3) passes through the top plate (1) downward, and the longitudinal shaft rod (3) is slidably connected to a connecting tube (4); A limiting groove (13) is arranged inside the connecting tube (4), and the longitudinal shaft rod (3) passes through the limiting groove (13) downwards.

2. The device for early warning of large deformation of deep foundation pits in soft soil areas according to claim 1 is characterized in that: A plurality of connection blocks (6) are fixedly connected to both sides of the connection tube (4), and a movable groove (7) is arranged inside the plurality of connection blocks (6).

3. The device for early warning of large deformation of deep foundation pits in soft soil areas according to claim 2 is characterized in that: A horizontal displacement sensor (8) is fixedly connected inside the movable groove (7), and a connecting rod (9) is slidably connected inside the movable groove (7).

4. The device for early warning of large deformation of deep foundation pits in soft soil areas according to claim 3 is characterized in that: The other side of the connecting rod (9) is fixedly connected with a horizontal contact plate (10).

5. The device for early warning of large deformation of deep foundation pits in soft soil areas according to claim 1 is characterized in that: L-shaped vertical brackets (5) are fixedly connected to both sides below the top plate (1), and vertical displacement sensors (12) are fixedly connected to the L-shaped vertical brackets (5).

6. The device for early warning of large deformation of deep foundation pits in soft soil areas according to claim 1 is characterized in that: The end of the connecting tube (4) is fixedly connected to a bottom plate (11), and the uppermost end of the longitudinal shaft rod (3) is fixedly connected to an alarm (2).

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