A settlement displacement observation auxiliary device for foundation pit monitoring

Abstract

The invention provides a settlement displacement observation auxiliary device for foundation pit monitoring, which belongs to the technical field of foundation pit monitoring and comprises a settlement displacement monitoring component, a deflection detection component, an offset detection component and a reference water tank seat. The settlement displacement monitoring component comprises a transparent water storage cylinder, a connecting cylinder is fixedly installed at the center of the top of the transparent water storage cylinder, a water storage outer cylinder is fixedly installed on the top of the connecting cylinder, the transparent water storage cylinder, the connecting cylinder and the water storage outer cylinder are connected to the inside, and the center lines coincide. The invention monitors the monitoring points in the foundation pit by arranging the settlement displacement monitoring component, the deflection detection component and the offset detection component, judges whether the observation points in the foundation pit have settled, and calculates the deflection angle and the settlement distance, so as to solve the problems that the existing settlement displacement observation auxiliary device has low observation efficiency, cannot observe whether it is offset, and cannot observe the settlement distance and the deflection angle.

Description

Technical Field

[0001] The invention relates to the field of foundation pit monitoring, and in particular to a settlement displacement observation auxiliary device for foundation pit monitoring. Background Art

[0002] Foundation pit monitoring is an important part of foundation pit construction. It refers to various observations and analyses of changes in foundation pit rock and soil properties, support structure displacements, and surrounding environmental conditions during foundation pit excavation and underground engineering construction.

[0003] When conducting settlement detection on a foundation pit, it is necessary to set up multiple monitoring points inside the foundation pit and set up comparative reference points outside the foundation pit. At the same time, a level meter is used to compare and observe the reference points and the monitoring points, so as to determine whether settlement has occurred at the monitoring points in the foundation pit. However, if a monitoring point has slight settlement, the level meter cannot be used to quickly determine whether settlement has occurred at the monitoring point. At the same time, if there is no monitoring personnel using the level meter in real time, it is impossible to determine in real time whether settlement has occurred at the monitoring point, which reduces the observation efficiency.

[0004] At the same time, some reference points will shift during the settlement process, and because they are located in space, the shift angle is variable, and the existing external observation device cannot observe whether they are shifted and the deflection angle.

[0005] Therefore, the present application provides a settlement displacement observation auxiliary device for foundation pit monitoring to meet the needs. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a settlement displacement observation auxiliary device for foundation pit monitoring, which monitors the monitoring points in the foundation pit through the settlement displacement monitoring component, the deflection detection component and the offset detection component, determines whether the observation points in the foundation pit have settled, and calculates their deflection angles and settlement distances, so as to solve the problems of low observation efficiency of existing settlement displacement observation auxiliary devices, and the inability to observe whether they are offset, and the inability to observe their settlement distances and deflection angles.

[0007] The technical solution of the present invention is: a settlement displacement observation auxiliary device for foundation pit monitoring, comprising a settlement displacement monitoring component, a deflection detection component, an offset detection component and a reference water tank seat, the settlement displacement monitoring component comprising a transparent water storage cylinder, a connecting cylinder is fixedly installed at the center of the top of the transparent water storage cylinder, a water storage outer cylinder is fixedly installed on the top of the connecting cylinder, the transparent water storage cylinder, the connecting cylinder and the water storage outer cylinder are connected to each other, and the center lines coincide, and the top surface height of the water storage outer cylinder is the same as the top surface height of the reference water tank seat;

[0008] The offset detection component includes a support platform 1, the bottom of which is fixedly connected to the top of the reference water tank seat, a support platform 2 is fixedly installed on the top of the water storage outer cylinder, the support platform 2 is flush with the height of the support platform 1, a steel cable 1 is arranged inside the support platform 1, the outer end of the steel cable 1 is connected to the goniometer, a steel cable 2 is arranged inside the support platform 2, the steel cable 2 is connected to the other end of the goniometer, and in the initial state, the goniometer, the steel cable 1 and the steel cable 2 are in a horizontal position.

[0009] Preferably, an inner conducting tube is fixedly installed at the center of the inner wall at the bottom of the water storage outer tube, and the inner conducting tube is connected with the inside of the connecting tube, a covering tube is fixedly installed on the top of the inner conducting tube, and the center line of the covering tube coincides with that of the inner conducting tube, a water inlet area is formed between the bottom of the covering tube and the inner wall at the bottom of the water storage outer tube, a buffer groove is formed between the inner wall of the covering tube and the outer wall of the inner conducting tube, the water inlet area is connected with the inside of the buffer groove, a drain groove is formed between the inner wall of the inner conducting tube and the inside of the covering tube, a connecting port is opened at the top of the inner conducting tube, a plurality of connecting ports are provided, and are evenly distributed on the top of the inner conducting tube, and the buffer groove and the drain groove are connected through the connecting port.

[0010] Preferably, a second water inlet branch is fixedly installed on one side of the reference water tank seat, and a drain pipe is fixedly installed on the other side of the reference water tank seat. The drain pipe and the second water inlet branch are both connected to the interior of the reference water tank seat, and the drain pipe is flush with the second water inlet branch. A first water inlet branch is fixedly installed on the outer wall of the top of the water storage outer cylinder, and the first water inlet branch is connected to the interior of the water storage outer cylinder, the top horizontal plane of the first water inlet branch coincides with the bottom horizontal line of the connecting port, and the first water inlet branch is flush with the second water inlet branch.

[0011] Preferably, the outer end of the first water inlet branch is sealed and fixedly connected with a hard bellows, and a main water inlet pipe is provided on the outside of the reference water tank seat. The main water inlet pipe is sealed and connected with the second water inlet branch and the outer end of the hard bellows, and the main water inlet pipe is highly flush with the second water inlet branch and the hard bellows.

[0012] Preferably, an air relief valve is fixedly installed on the outer side of the top of the water storage outer cylinder.

[0013] Preferably, the deflection detection assembly consists of two groups of angle detection mechanisms, which are stacked vertically, the angle detection mechanism includes a double-arc base, the inner walls on both sides of the double-arc base are provided with arc damping grooves, the double-arc base at the bottom is fixedly connected to the top surface of the water storage outer cylinder, and is vertically arranged on the top surface of the water storage outer cylinder, the outer walls on both sides of the double-arc base are provided with deflection scales, the inner walls of the two groups of arc damping grooves are rotatably connected with an arc swivel seat, and the arc swivel seat is highly damped and connected to the arc damping groove, a pointer is fixedly installed at the center position of the outer wall of the arc swivel seat, and in the initial state the pointer points to the zero scale line in the middle of the deflection scale.

[0014] Preferably, the same turntable is fixedly installed on the top of the two groups of arc-shaped swivel seats, and support seats are fixedly installed on both sides of the top surface of the turntable located at the bottom. The bottom of the double-arc base in the angle detection mechanism located at the top is fixedly connected to the two groups of support seats, and the double-arc base at the top is vertically arranged with the double-arc base at the bottom.

[0015] Preferably, angle display components are provided on both sides of the top of the turntable, and the two groups of angle display components located on the same turntable are cross-symmetrically arranged, the angle display components include an arc-shaped transparent detection shell, the bottom of the arc-shaped transparent detection shell is fixedly connected to the top surface of the turntable, a liquid flow groove is opened on the inner wall of the arc-shaped transparent detection shell, arc-shaped blocking shells are fixedly installed on both sides of the arc-shaped transparent detection shell by bolts, a glass blocking strip is fixedly installed on the inner wall of the arc-shaped blocking shell, the glass blocking strip is sealed and clamped with the inner wall of the liquid flow groove, the liquid flow groove and the inner wall of the glass blocking strip are both provided with high-strength glass coating, liquid mercury flows on the inner wall of the liquid flow groove, and horizontal scale lines are provided on the top side wall of the arc-shaped transparent detection shell. The mercury inside the liquid flow groove is flush with the horizontal scale lines in the initial position.

[0016] Preferably, a positioning hook 1 is fixedly installed on the inner wall of support platform 1, the outer end of steel cable 1 is fixedly connected to the positioning hook 1, an angle sensor is fixedly installed on the inner wall of support platform 1, the other end of steel cable 1 is rotatably connected to one end of an angle measuring piece, and the output end of the angle sensor detects the angle measuring piece, and a positioning hook 2 is fixedly installed on the inner wall of support platform 2, the outer end of steel cable 2 is fixedly connected to the positioning hook 2, and the other end of steel cable 2 is fixedly connected to the other end of the angle measuring piece.

[0017] Beneficial effects of the present invention:

[0018] 1. The settlement displacement observation auxiliary device for foundation pit monitoring continuously injects liquid water into the water inlet main pipe. When the observation point in the foundation pit settles, the water inlet branch 1 will move downward. Under the action of gravity, the liquid water in the hard corrugated pipe can enter the water inlet branch 1, and the liquid water in the water inlet branch 1 can enter the water storage outer cylinder, so that the water level lines in the water storage outer cylinder and the buffer tank exceed the bottom of the connecting port, so that the liquid water in the buffer tank enters the drain tank through the connecting port. Based on the siphon effect, the liquid water in the water storage outer cylinder will continuously enter the connecting cylinder and the transparent water storage cylinder through the liquid flow channel formed between the water inlet area, the buffer tank, the connecting port and the drain tank, so that the liquid water in the water storage outer cylinder completely enters the transparent water storage cylinder. At this time, the operator can judge whether the observation point in the foundation pit has settled by observing the volume change of the liquid water in the transparent water storage cylinder;

[0019] 2. When the observation point in the foundation pit deflects synchronously during the settlement process, it will drive the transparent water storage cylinder and the water storage outer cylinder to deflect, thereby driving the two sets of angle detection mechanisms to deflect, and the deflection angle is the same as the deflection angle of the observation point in the foundation pit. At this time, the mercury in the liquid circulation groove also deflects synchronously. At the same time, under the action of gravity, the mercury in the liquid circulation groove deviates from the horizontal scale line. At this time, the operator manually moves the turntable to make the arc-shaped rotating seat move in the arc-shaped damping groove, so that the mercury in the liquid circulation groove on the top of the turntable coincides with the horizontal scale line again. At this time, the index of the observation pointer on the deflection scale can be used to obtain the deflection angle of the observation point during the settlement process;

[0020] 3. When the observation point in the foundation pit sinks, the water storage outer cylinder will drive the support platform 2 to sink. At this time, the positioning hook 2 on the top of the support platform 2 will drive the steel cable 2 to sink synchronously, thereby driving the goniometer connected to the steel cable 2 to deflect. By observing the angle change of the goniometer, the angle change caused by the settlement height of the observation point in the foundation pit can be obtained. When it only sinks without deflection, the angle between the goniometer and the reference water tank seat is 90°. When it sinks and deflects, the angle between the goniometer and the reference water tank seat is 90° plus the deflection angle of the pointer and the deflection scale. The settlement height of the observation point in the foundation pit can be calculated according to the sine theorem or the cosine theorem. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 What is shown is a three-dimensional structural schematic diagram of a settlement displacement observation auxiliary device for foundation pit monitoring;

[0022] Figure 2 What is shown is a three-dimensional structural schematic diagram of the settlement displacement monitoring component;

[0023] Figure 3 Shown is a partial structural schematic diagram of the offset detection assembly on the reference water tank seat;

[0024] Figure 4 What is displayed is the installation structure diagram of each component at the point to be tested in the foundation pit;

[0025] Figure 5 Shown is a cross-sectional view of the reference water tank seat;

[0026] Figure 6 Shown is a schematic diagram of the structure of the deflection detection component;

[0027] Figure 7 The diagram shows the connection structure between the arc-shaped swivel seat and the double arc-shaped base;

[0028] Figure 8 The installation structure diagram of the deflection display component and the turntable is shown;

[0029] Fig. 9The displayed image is a split diagram of the deflection display component;

[0030] Fig.10 Shown is a plan view of the component displayed at an angle.

[0031] Explanation of reference numerals: 100, settlement displacement monitoring assembly; 110, transparent water storage cylinder; 120, connecting cylinder; 130, water storage outer cylinder; 131, inner conducting cylinder; 132, covering cylinder; 133, connecting port; 134, water inlet area; 135, buffer tank; 136, drain tank; 137, water inlet branch 1; 138, air release valve; 140, hard bellows; 200, deflection detection assembly; 210, angle detection mechanism; 211, double arc base; 212, arc damping groove; 213, deflection scale; 214, arc swivel seat; 215, pointer; 22 0. Turntable; 221. Support seat; 230. Deflection angle display component; 231. Arc-shaped transparent detection shell; 232. Liquid flow groove; 233. Horizontal scale line; 234. Arc-shaped blocking shell; 235. Glass blocking strip; 300. Deflection distance detection component; 310. Support platform one; 311. Positioning hook one; 320. Steel cable one; 330. Angle sensor; 340. Goniometer; 350. Support platform two; 351. Positioning hook two; 360. Steel cable two; 400. Reference water tank seat; 410. Water inlet branch two; 420. Drain pipe; 430. Water inlet main pipe. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] See also Figure 1-Figure 4 The present invention provides an embodiment: a settlement displacement observation auxiliary device for foundation pit monitoring, comprising a settlement displacement monitoring component 100, a deflection detection component 200, an offset detection component 300 and a reference water tank seat 400, the settlement displacement monitoring component 100 comprises a transparent water storage cylinder 110, a connecting cylinder 120 is fixedly installed at the top center of the transparent water storage cylinder 110, a water storage outer cylinder 130 is fixedly installed on the top of the connecting cylinder 120, the transparent water storage cylinder 110, the connecting cylinder 120 and the water storage outer cylinder 130 are internally connected, and the center lines coincide, the top surface height of the water storage outer cylinder 130 is the same as the top surface height of the reference water tank seat 400, in the present application, the reference water tank seat 400 is placed on a predetermined reference point, and at the same time, multiple groups of transparent water storage cylinders 110 are placed on multiple groups of observation points in the foundation pit, thereby completing the preparatory work;

[0034] The offset detection component 300 includes a support platform 1 310, the bottom of the support platform 1 310 is fixedly connected to the top of the reference water tank seat 400, the reference water tank seat 400 provides support for the support platform 1 310, a support platform 2 350 is fixedly installed on the top of the water storage outer cylinder 130, the water storage outer cylinder 130 provides support for the support platform 2 350, the support platform 2 350 is flush with the support platform 1 310, a steel cable 1 320 is arranged inside the support platform 1 310, the outer end of the steel cable 1 320 is connected to the goniometer 340, a steel cable 2 360 is arranged inside the support platform 2 350, the steel cable 2 360 is connected to the other end of the goniometer 340, and in the initial state, the goniometer 340, the steel cable 1 320 and the steel cable 2 360 are in a horizontal position, by observing the angle change of the goniometer 340, the angle change caused by the settlement height of the observation point in the foundation pit can be obtained, and the settlement height of the observation point in the foundation pit can be calculated according to the sine theorem or the cosine theorem.

[0035] As an implementation method in this embodiment, Figure 2 As shown, an inner conducting tube 131 is fixedly installed at the center of the inner wall at the bottom of the water storage outer tube 130, and the inner conducting tube 131 is connected to the inside of the connecting tube 120, and a covering tube 132 is fixedly installed on the top of the inner conducting tube 131, and the center line of the covering tube 132 coincides with the center line of the inner conducting tube 131, and a water inlet area 134 is formed between the bottom of the covering tube 132 and the inner wall at the bottom of the water storage outer tube 130, and a buffer groove 135 is formed between the inner wall of the covering tube 132 and the outer wall of the inner conducting tube 131, and the water inlet area 134 It is connected to the interior of the buffer groove 135, and a drainage groove 136 is formed between the inner wall of the inner conductive tube 131 and the interior of the covering tube 132. A connecting port 133 is opened on the top of the inner conductive tube 131. There are multiple groups of connecting ports 133, and they are evenly distributed on the top of the inner conductive tube 131. The buffer groove 135 and the drainage groove 136 are connected through the connecting ports 133. In the present application, a liquid passage can be formed between the water inlet area 134, the buffer groove 135, the connecting port 133 and the drainage groove 136.

[0036] In this embodiment, if Figures 1 to 5As shown, a second water inlet manifold 410 is fixedly installed on one side of the reference water tank seat 400, and a drain pipe 420 is fixedly installed on the other side of the reference water tank seat 400. The drain pipe 420 and the second water inlet manifold 410 are both connected to the inside of the reference water tank seat 400, and the drain pipe 420 is flush with the second water inlet manifold 410. When there is liquid water in the reference water tank seat 400, since the drain pipe 420 is flush with the second water inlet manifold 410, the water levels of the drain pipe 420 and the second water inlet manifold 410 are always the same. The top outer wall of the water storage outer cylinder 130 is fixedly installed with a water inlet manifold 110. 37, and the water inlet branch 137 is connected to the inside of the water storage outer cylinder 130, the top horizontal plane of the water inlet branch 137 coincides with the bottom horizontal line of the connecting port 133, and the water inlet branch 137 is flush with the water inlet branch 2 410. In the present application, if liquid water is provided in the reference water tank seat 400 and the water storage outer cylinder 130, the water levels in the reference water tank seat 400, the water inlet branch 2 410, the water inlet main pipe 430, the water inlet branch 137, the hard bellows 140, the water storage outer cylinder 130 and the buffer tank 135 are all the same, and coincide with the lowest horizontal line of the connecting port 133.

[0037] The outer end of the water inlet branch 137 is sealed and fixedly connected with a hard bellows 140, and the hard bellows 140 can undergo slight deformation. When the observation point in the foundation pit sinks, the water storage outer cylinder 130 will drive the water inlet branch 137 to move downward. Under the action of gravity, the liquid water in the hard bellows 140 can enter the water inlet branch 137. A water inlet main pipe 430 is provided on the outside of the reference water tank seat 400. The water inlet main pipe 430 is sealed and connected with the water inlet branch 2 410 and the outer end of the hard bellows 140, and the water inlet main pipe 430 is highly flush with the water inlet branch 2 410 and the hard bellows 140.

[0038] The outer top of the water storage outer cylinder 130 is fixedly installed with a relief valve 138. The relief valve 138 can ensure that the air pressure in the water storage outer cylinder 130 is always the same as the external air pressure during the process of filling water into the water storage outer cylinder 130. In the present application, after the device is installed, liquid water is continuously injected into the water inlet main pipe 430. Based on the principle of the communicating vessel, after the water filling is completed (the performance after the water filling is completed is: the drain pipe 420 starts to discharge liquid water), the reference water tank seat 40 0 is the same as the water level of the second water inlet manifold 410, the water inlet main pipe 430, the hard bellows 140, the water inlet manifold 137, the water storage outer cylinder 130 and the buffer tank 135, and is slightly lower than the bottom horizontal line of the connecting port 133. When the observation point in the foundation pit settles, it will drive the transparent water storage cylinder 110 and the water storage outer cylinder 130 to descend, causing the water inlet manifold 137 to move downward. Under the action of gravity, the liquid water in the hard bellows 140 can enter the The liquid water in the water inlet branch 137 enters the water storage outer cylinder 130, so that the water level lines in the water storage outer cylinder 130 and the buffer tank 135 exceed the bottom of the connecting port 133, so that the liquid water in the buffer tank 135 enters the drain tank 136 through the connecting port 133. Based on the siphon effect, the liquid water in the water storage outer cylinder 130 will pass through the water inlet area 134, the buffer tank 135, the connecting port 133 and the drain tank 136. The liquid flow channel continuously enters the connecting tube 120 and the transparent water storage tube 110, so that the liquid water in the water storage outer tube 130 completely enters the transparent water storage tube 110. At this time, the operator can judge whether the observation point in the foundation pit has settled by observing the volume change of the liquid water in the transparent water storage tube 110. In particular, when the foundation pit settles slightly (settlement distance ≤ 5 cm), the existing communicating vessel observation method cannot intuitively reflect the observation results.

[0039] As an implementation method in this embodiment, Figure 6 and Figure 7As shown, the deflection detection assembly 200 is composed of two groups of angle detection mechanisms 210, which are vertically stacked. The two groups of angle detection mechanisms 210 are vertically stacked on the top of the water storage outer cylinder 130, and can respectively detect the deflection angles of the X-axis direction and the Y-axis direction in the plane coordinate system. The angle detection mechanism 210 includes a double-arc base 211, and the inner walls of both sides of the double-arc base 211 are provided with arc damping grooves 212. The double-arc base 211 at the bottom is fixedly connected to the top surface of the water storage outer cylinder 130, and is vertically arranged on the top surface of the water storage outer cylinder 130. On the upper side, the outer walls on both sides of the double arc base 211 are provided with deflection scales 213, the middle of the deflection scales 213 is the zero scale line, the inner walls of the two groups of arc damping grooves 212 are rotatably connected with arc swivel seats 214, and the arc swivel seats 214 and the arc damping grooves 212 are highly damped. That is, in the absence of a large external force, the arc swivel seat 214 can rotate with the double arc base 211, and a pointer 215 is fixedly installed at the center position of the outer wall of the arc swivel seat 214, and in the initial state, the pointer 215 points to the zero scale line in the middle of the deflection scale 213.

[0040] The same turntable 220 is fixedly installed on the top of the two groups of arc-shaped rotating seats 214, and support seats 221 are fixedly installed on both sides of the top surface of the turntable 220 located at the bottom. The bottom of the double-arc base 211 in the angle detection mechanism 210 located at the top is fixedly connected to the two groups of support seats 221, and the double-arc base 211 at the top is vertically arranged with the double-arc base 211 at the bottom.

[0041] In this embodiment, if Figures 8 to 10As shown, both sides of the top of the turntable 220 are provided with deflection display components 230, and the two groups of deflection display components 230 located on the same turntable 220 are cross-symmetrically arranged. The two groups of deflection display components 230 arranged cross-symmetrically can detect in which direction the turntable 220 is deflected. The deflection display component 230 includes an arc-shaped transparent detection shell 231, the bottom of the arc-shaped transparent detection shell 231 is fixedly connected to the top surface of the turntable 220, the inner wall of the arc-shaped transparent detection shell 231 is provided with a liquid flow groove 232, and the arc-shaped transparent detection shell 231 has two sides. The sides are fixed with an arc-shaped blocking shell 234 by bolts, and a glass blocking strip 235 is fixedly installed on the inner wall of the arc-shaped blocking shell 234. The glass blocking strip 235 is sealed and clamped with the inner wall of the liquid circulation groove 232. The inner walls of the liquid circulation groove 232 and the glass blocking strip 235 are both provided with high-strength glass coatings. Liquid mercury flows through the inner wall of the liquid circulation groove 232. The adsorption of liquid mercury to the glass wall is low, and it can more accurately reflect the detection results. The top side wall of the arc-shaped transparent detection shell 231 is provided with a horizontal scale line 233. The liquid circulation groove 232 has a The mercury is flush with the horizontal scale line 233 at the initial position. When the turntable 220 is in the horizontal position at the initial position, the top surface of the mercury inside the liquid flow slot 232 coincides with the horizontal scale line 233, that is, the turntable 220 is not deflected. In the present application, when the observation point in the foundation pit deflects synchronously during the settlement process, the transparent water storage cylinder 110 and the water storage outer cylinder 130 will be deflected, thereby driving the two sets of angle detection mechanisms 210 to deflect, and the deflection angle is the same as the deflection angle of the observation point in the foundation pit. At this time , the mercury in the liquid circulation groove 232 also deflects synchronously. At the same time, under the action of gravity, the mercury in the liquid circulation groove 232 deviates from the horizontal scale line 233. At this time, the operator manually moves the turntable 220 to make the arc-shaped rotating seat 214 move in the arc-shaped damping groove 212, so that the mercury in the liquid circulation groove 232 on the top of the turntable 220 coincides with the horizontal scale line 233 again. At this time, the index of the observation pointer 215 on the deflection scale 213 can be used to obtain the deflection angle of the observation point during the sedimentation process.

[0042] As an implementation method in this embodiment, Figure 3 and Figure 4As shown, a positioning hook 311 is fixedly installed on the inner wall of the support platform 1 310, and the outer end of the steel cable 320 is fixedly connected to the positioning hook 311. An angle sensor 330 is fixedly installed on the inner wall of the support platform 1 310. The other end of the steel cable 320 is rotatably connected to one end of the goniometer 340. The output end of the angle sensor 330 detects the goniometer 340. A positioning hook 351 is fixedly installed on the inner wall of the support platform 2 350. The outer end of the steel cable 360 ​​is fixedly connected to the positioning hook 351, and the other end of the steel cable 360 ​​is fixedly connected to the other end of the goniometer 340. In this application, when the observation point in the foundation pit sinks, the support platform is driven by the water storage outer cylinder 130. When support platform 2350 sinks, positioning hook 2351 on top of support platform 2350 drives steel cable 2360 to sink synchronously, thereby driving angle measuring piece 340 connected to steel cable 2360 to deflect. By observing the angle change of angle measuring piece 340, the angle change caused by the settlement height of the observation point in the foundation pit can be obtained. When it only sinks but does not deflect, the angle between the angle measuring piece 340 and the reference water tank seat 400 is 90°. When it sinks and deflects, the angle between the angle measuring piece 340 and the reference water tank seat 400 is 90° plus the deflection angle between pointer 215 and deflection scale 213. The settlement height of the observation point in the foundation pit can be calculated according to the sine theorem or the cosine theorem.

[0043] During operation, liquid water is continuously injected into the water inlet main pipe 430, so that the water level in the reference water tank seat 400 is the same as the water level of the water inlet branch 2 410, the water inlet main pipe 430, the hard bellows 140, the water inlet branch 1 137, the water storage outer cylinder 130 and the buffer tank 135, and is slightly lower than the bottom horizontal line of the connecting port 133. When the observation point in the foundation pit sinks, it will drive the transparent water storage cylinder 110 and the water storage outer cylinder 130 to descend, so that the water inlet branch 1 137 moves downward. Under the action of gravity, the liquid water in the hard bellows 140 can enter the water inlet branch 1 137, and the liquid water in the water inlet branch 1 137 can enter the water storage outer cylinder 13 0, so that the water level lines in the water storage outer cylinder 130 and the buffer tank 135 exceed the bottom of the connecting port 133, so that the liquid water in the buffer tank 135 enters the drain tank 136 through the connecting port 133. Based on the siphon effect, the liquid water in the water storage outer cylinder 130 will continuously enter the connecting cylinder 120 and the transparent water storage cylinder 110 through the liquid flow channel formed by the water inlet area 134, the buffer tank 135, the connecting port 133 and the drain tank 136, so that the liquid water in the water storage outer cylinder 130 completely enters the transparent water storage cylinder 110. At this time, the operator can judge whether the observation point in the foundation pit has settled by observing the volume change of the liquid water in the transparent water storage cylinder 110;

[0044] When the observation point in the foundation pit deflects synchronously during the settlement process, the transparent water storage cylinder 110 and the water storage outer cylinder 130 will be driven to deflect, thereby driving the two sets of angle detection mechanisms 210 to deflect, and the deflection angle is the same as the deflection angle of the observation point in the foundation pit. At this time, the mercury in the liquid circulation groove 232 also deflects synchronously. At the same time, under the action of gravity, the mercury in the liquid circulation groove 232 deviates from the horizontal scale line 233. At this time, the operator manually moves the turntable 220 to make the arc-shaped rotating seat 214 move in the arc-shaped damping groove 212, so that the mercury in the liquid circulation groove 232 on the top of the turntable 220 coincides with the horizontal scale line 233. At this time, the index of the observation pointer 215 on the deflection scale 213 can be used to obtain the deflection angle of the observation point during the settlement process.

[0045] When the observation point in the foundation pit sinks, the water storage outer cylinder 130 will drive the support platform 350 to sink. At this time, the positioning hook 351 on the top of the support platform 350 will drive the steel cable 360 ​​to sink synchronously, thereby driving the goniometer 340 connected to the steel cable 360 ​​to deflect. By observing the angle change of the goniometer 340, the angle change caused by the settlement height of the observation point in the foundation pit can be obtained. When it only sinks without deflection, the angle between the goniometer 340 and the reference water tank seat 400 is 90°. When it sinks and deflects, the angle between the goniometer 340 and the reference water tank seat 400 is 90° plus the deflection angle of the pointer 215 and the deflection scale 213. The settlement height of the observation point in the foundation pit can be calculated according to the sine theorem or the cosine theorem.

[0046] Through the above steps, by setting the settlement displacement monitoring component 100, the deflection detection component 200 and the offset detection component 300, the monitoring points in the foundation pit are monitored, it is determined whether the observation points in the foundation pit have settled, and the deflection angle and the settlement distance are calculated, so as to solve the problems of low observation efficiency of the existing settlement displacement observation auxiliary device, and the inability to observe whether it is offset, and the inability to observe the settlement distance and the deflection angle.

Claims

1. A settlement displacement observation auxiliary device for foundation pit monitoring, comprising a settlement displacement monitoring component (100), a deflection detection component (200), a deviation detection component (300) and a reference water tank seat (400), characterized in that: The settlement displacement monitoring assembly (100) comprises a transparent water storage cylinder (110), a connecting cylinder (120) is fixedly mounted at the top center of the transparent water storage cylinder (110), a water storage outer cylinder (130) is fixedly mounted on the top of the connecting cylinder (120), the transparent water storage cylinder (110), the connecting cylinder (120) and the water storage outer cylinder (130) are internally connected, and the center lines thereof coincide, and the top surface height of the water storage outer cylinder (130) is the same as the top surface height of the reference water tank seat (400); The offset detection assembly (300) comprises a support platform 1 (310), the bottom of the support platform 1 (310) is fixedly connected to the top of the reference water tank seat (400), a support platform 2 (350) is fixedly installed on the top of the water storage outer cylinder (130), the support platform 2 (350) is flush with the support platform 1 (310), a steel cable 1 (320) is arranged inside the support platform 1 (310), the outer end of the steel cable 1 (320) is connected to the goniometer (340), a steel cable 2 (360) is arranged inside the support platform 2 (350), the steel cable 2 (360) is connected to the other end of the goniometer (340), and in an initial state, the goniometer (340), the steel cable 1 (320) and the steel cable 2 (360) are in a horizontal position.

2. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 1 is characterized in that: An inner conducting tube (131) is fixedly mounted at the center of the inner wall at the bottom of the water storage outer tube (130), and the inner conducting tube (131) is connected to the inside of the connecting tube (120). A covering tube (132) is fixedly mounted on the top of the inner conducting tube (131), and the center lines of the covering tube (132) and the inner conducting tube (131) coincide with each other. A water inlet area (134) is formed between the bottom of the covering tube (132) and the inner wall at the bottom of the water storage outer tube (130), and the inner wall of the covering tube (132) and the inner conducting tube (131) are connected to each other. ) outer walls, the water inlet area (134) is connected to the inside of the buffer groove (135), a drain groove (136) is formed between the inner wall of the inner conducting tube (131) and the inside of the covering tube (132), a connecting port (133) is provided at the top of the inner conducting tube (131), a plurality of connecting ports (133) are provided and are evenly distributed at the top of the inner conducting tube (131), and the buffer groove (135) and the drain groove (136) are connected via the connecting port (133).

3. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 2 is characterized in that: A second water inlet branch (410) is fixedly mounted on one side of the reference water tank seat (400), and a drainage pipe (420) is fixedly mounted on the other side of the reference water tank seat (400). The drainage pipe (420) and the second water inlet branch (410) are both connected to the interior of the reference water tank seat (400), and the drainage pipe (420) and the second water inlet branch (410) are flush with each other in height. A first water inlet branch (137) is fixedly mounted on the outer wall of the top of the water storage outer cylinder (130), and the first water inlet branch (137) is connected to the interior of the water storage outer cylinder (130). The top horizontal plane of the first water inlet branch (137) coincides with the bottom horizontal line of the connecting port (133), and the first water inlet branch (137) and the second water inlet branch (410) are flush with each other in height.

4. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 3 is characterized in that: A hard bellows (140) is sealed and fixedly connected to the outer end of the first water inlet branch (137); a main water inlet pipe (430) is provided on the outer side of the reference water tank seat (400); the main water inlet pipe (430) is sealed and connected to the outer ends of the second water inlet branch (410) and the hard bellows (140); and the main water inlet pipe (430) is highly flush with the second water inlet branch (410) and the hard bellows (140).

5. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 1 is characterized in that: An air relief valve (138) is fixedly mounted on the outer side of the top of the water storage outer cylinder (130).

6. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 1 is characterized in that: The deflection detection assembly (200) is composed of two groups of angle detection mechanisms (210) which are arranged in a vertical stack. The angle detection mechanism (210) comprises a double arc base (211). The inner walls on both sides of the double arc base (211) are provided with arc damping grooves (212). The double arc base (211) located at the bottom is fixedly connected to the top surface of the water storage outer cylinder (130) and is vertically arranged on the top surface of the water storage outer cylinder (130). The outer walls on both sides of the double arc base (211) are provided with deflection scales (213). The inner walls of the two groups of arc damping grooves (212) are rotatably connected with arc rotating seats (214), and the arc rotating seats (214) and the arc damping grooves (212) are connected in a high-damping manner. A pointer (215) is fixedly installed at the center of the outer wall of the arc rotating seat (214), and in the initial state, the pointer (215) points to the zero scale line in the middle of the deflection scale (213).

7. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 6 is characterized in that: The same turntable (220) is fixedly mounted on the top of the two groups of arc-shaped turntables (214), support seats (221) are fixedly mounted on both sides of the top surface of the turntable (220) located at the bottom, the bottom of the double arc-shaped base (211) in the angle detection mechanism (210) located at the top is fixedly connected to the two groups of support seats (221), and the double arc-shaped base (211) at the top and the double arc-shaped base (211) at the bottom are arranged vertically.

8. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 7 is characterized in that: Both sides of the top of the turntable (220) are provided with deflection display components (230), and the two groups of deflection display components (230) located on the same turntable (220) are arranged in a cross-symmetrical manner. The deflection display components (230) include an arc-shaped transparent detection shell (231), the bottom of the arc-shaped transparent detection shell (231) is fixedly connected to the top surface of the turntable (220), the inner wall of the arc-shaped transparent detection shell (231) is provided with a liquid flow groove (232), and both sides of the arc-shaped transparent detection shell (231) are fixedly installed with arc-shaped blocking shells (231) by bolts. 234), a glass blocking strip (235) is fixedly mounted on the inner wall of the arc-shaped blocking shell (234), the glass blocking strip (235) is sealed and clamped with the inner wall of the liquid circulation groove (232), the inner walls of the liquid circulation groove (232) and the glass blocking strip (235) are both provided with a high-strength glass coating, liquid mercury flows through the inner wall of the liquid circulation groove (232), a horizontal scale line (233) is provided on the top side wall of the arc-shaped transparent detection shell (231), and the mercury inside the liquid circulation groove (232) is flush with the horizontal scale line (233) at an initial position.

9. The settlement displacement observation auxiliary device for foundation pit monitoring according to claim 1, characterized in that: A positioning hook (311) is fixedly mounted on the inner wall of the first support platform (310); the outer end of the first steel cable (320) is fixedly connected to the positioning hook (311); an angle sensor (330) is fixedly mounted on the inner wall of the first support platform (310); the other end of the first steel cable (320) is rotatably connected to one end of a goniometer (340); the output end of the angle sensor (330) detects the goniometer (340); a positioning hook (351) is fixedly mounted on the inner wall of the second support platform (350); the outer end of the second steel cable (360) is fixedly connected to the second positioning hook (351); and the other end of the second steel cable (360) is fixedly connected to the other end of the goniometer (340).

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