CN114234913A

CN114234913A - Settlement degree measuring device for bridge design

Info

Publication number: CN114234913A
Application number: CN202111540967.5A
Authority: CN
Inventors: 吴巨军; 郭佩佩; 孙荣国; 王昕�
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-03-25
Anticipated expiration: 2041-12-16
Also published as: CN114234913B

Abstract

The invention discloses a settlement measuring device for bridge design, and belongs to the technical field of bridge settlement measurement. A settlement measuring device for bridge design comprises a settlement plate arranged on the bottom surface of a settlement mark, a pressure stabilizing support mechanism, a levelness measuring mechanism and a settlement monitoring mechanism, wherein a dustproof box is arranged on the outer side of the settlement plate, the pressure stabilizing support mechanism is arranged at four corners of the bottom surface of the settlement plate, and the levelness measuring mechanism is arranged on the pressure stabilizing support mechanism; the settlement monitoring mechanism is arranged below the settlement plate. According to the invention, a supported settlement plate is arranged around the settlement mark of the pier body of the bridge, the center of the settlement plate is opposite to the settlement mark, a settlement monitoring mechanism is arranged below the settlement plate, so that the descending data of the settlement plate can be monitored for a long time, the settlement of the bridge is obtained, the settlement plate is supported by uniformly distributed pressure stabilizing supporting mechanisms, a levelness measuring mechanism is arranged on the pressure stabilizing supporting mechanism to monitor whether the settlement plate is inclined or not, and the inclination deviation direction and data of the pier body are obtained.

Description

Settlement degree measuring device for bridge design

Technical Field

The invention relates to the technical field of bridge settlement measurement, in particular to a settlement measuring device for bridge design.

Background

With the rapid advance of traffic infrastructure, a plurality of bridges are built in various places throughout the country. Because of wide breadth of our country and complex geological conditions, various foundation settlement problems often occur. Factors such as complex geological conditions of bridge sites, uneven load of upper structures and the like can cause uneven settlement of bridge structure foundations, so that some components are cracked and even damaged. When the bridge is designed, a settlement mark is established at a proper position of the pier body, and the settlement mark is used for periodically detecting and monitoring the state of the bridge and reducing the structural risk caused by settlement.

Bridge settlement is a slow process, but can also be severely changed by accidental factors (such as earthquakes). Therefore, it is necessary to establish a long-acting device for measuring the sedimentation degree, and an accurate sedimentation degree supervision is realized through periodically fed back data or real-time reading.

Therefore, the settlement measuring device for bridge design is designed.

Disclosure of Invention

The invention aims to solve the problems of instability and complexity of regular settlement monitoring, establish a long-acting settlement measuring device and realize accurate settlement monitoring through regular feedback data or real-time reading.

In order to achieve the purpose, the invention adopts the following technical scheme:

a settlement measuring device for bridge design comprises a settlement plate arranged on the bottom surface of a settlement mark, a pressure stabilizing support mechanism, a levelness measuring mechanism and a settlement monitoring mechanism, wherein a dust box is arranged on the ground close to a bridge pier body, the ground is subjected to settlement prevention and reinforcement, one side of the dust box, which is opposite to the bridge pier body, is communicated with the outside, the settlement plate is arranged inside the dust box and supported by the pressure stabilizing support mechanism, the pressure stabilizing support mechanism is arranged at four corners of the bottom surface of the settlement plate, and the regulation of pressure stabilizing, resetting prevention and flatness enhancement is realized along with the height regulation of the settlement plate; the levelness measuring mechanism is arranged on the pressure stabilizing supporting mechanism and is used for monitoring the levelness of the settlement plate; and the settlement monitoring mechanism is arranged below the settlement plate and used for measuring the settlement after the settlement plate descends.

Preferably, the pressure stabilizing support mechanism comprises air pressure pipes and support rods, the four air pressure pipes are vertically fixed at four corners of the bottom surface of the settling plate, the support rods are vertically fixed at the bottom surface of the dust-proof box, the top ends of the support rods upwards penetrate into the air pressure pipes and are in sliding fit with the support rods, and pistons are fixed at the top ends of the support rods.

Preferably, the piston is internally hollow, the upper end and the lower end of the piston are arranged in the hollow cavity, the upper end and the lower end of the piston are both in an annular shape and are equidistantly provided with a plurality of exhaust holes communicated with the inside of the piston, sponge blocks are arranged at positions of the exhaust holes attached to the inside of the piston, a plurality of sealing plates are arranged between the sponge blocks at one time, fiber cloth is arranged between the sealing plates, fan-shaped limiting grooves are formed in the sealing plates, and the sealing plates are arranged in a staggered mode.

Preferably, the levelness measuring mechanism comprises a rotating support seat and a angle measuring plate, the rotating support seat is fixed on the outer side of the bottom end of the front-side pneumatic tube respectively, a connecting rod which is connected with the rotating support seat in a rotating mode is arranged between the rotating support seat and is arranged in the middle of the front side of the connecting rod, a rotating shaft is vertically fixed in the middle of the connecting rod in the horizontal direction, the rotating shaft penetrates through the circle center of the angle measuring plate and is connected with the rotating support seat in a rotating mode, a vertically arranged pointer is fixed at the front end of the rotating shaft, and a counter weight support which rotates with the middle of the side edge of the settling plate is fixed at the rear end of the angle measuring plate.

Preferably, the settlement monitoring mechanism comprises a first measuring cylinder and a second measuring cylinder, the top of the first measuring cylinder is communicated with the outside, a limiting rod is vertically fixed in the middle of the bottom surface of the settlement plate, a plunger rod inserted into the first measuring cylinder and connected with the first measuring cylinder in a sliding manner is fixed at the bottom end of the limiting rod, a first base is arranged at the bottom end of the first measuring cylinder, the first base is fixedly connected with the bottom surface of the dust-proof box, and the bottom of the side edge of the first measuring cylinder is connected with a hose which is distributed in a Y shape.

Preferably, the position of bridge pier shaft bottom both sides is located to the second measuring cylinder, the second measuring cylinder bottom is equipped with the second base, the second base is 90 degrees arc structure settings and is fixed with at its tip with bridge pier shaft vertically stereoplasm blast pipe, stereoplasm blast pipe bottom mounting has the sucking disc, the sucking disc adsorbs in the pier shaft lateral wall, stereoplasm blast pipe lateral wall intercommunication is equipped with the piston pipe, piston intraduct is equipped with rather than threaded connection's piston rod.

Compared with the prior art, the invention provides a settlement measuring device for bridge design, which has the following beneficial effects:

(1) the settlement mark bearing device is provided with the settlement plate surrounding the settlement mark of the bridge pier body, the center of the settlement plate is opposite to the settlement mark, the settlement monitoring mechanism is arranged below the settlement plate, the descending depth of the settlement plate can be monitored for a long time, the settlement of the bridge can be measured, the settlement plate is supported by the uniformly distributed pressure stabilizing supporting mechanisms, the levelness measuring mechanism is arranged on the pressure stabilizing supporting mechanism and used for monitoring whether the settlement plate is inclined or not, and the deviation direction and the deviation data of the settlement mark on the settlement plate are monitored.

(2) According to the invention, the four pneumatic tubes are movably connected with the four support rods to support the settling plate, the support rods are partially inserted into the pneumatic tubes, the upper sides and the lower sides of the pneumatic tubes are separated by the pistons, so that the pneumatic tubes are stable and in a sealed state, the pressure is pressed down on the settling marks, the pressure balance is quickly recovered through the air permeability of the pistons, and a state of air pressure balance is reestablished, so that the supporting force of the settling plate is kept balanced and stable, the settling plate is convenient to stably land, and the balance of the settling plate is controlled.

(3) According to the invention, two rotating supporting seats are respectively sleeved at the bottom ends of adjacent pneumatic tubes, a connecting rod in a horizontal state is movably connected through the two rotating supporting seats, a rotating shaft binding pointer vertically welded in the middle of the connecting rod is matched with a angle measuring plate, the inclination and the gradient of a settlement plate are monitored, and the monitoring and the measurement of the offset direction of a bridge are realized.

Drawings

FIG. 1 is a schematic overall front view of the present invention;

FIG. 2 is a schematic front sectional side view of the dust-proof box of the present invention;

FIG. 3 is a schematic view of the internal components of the dust bin of the present invention;

FIG. 4 is a schematic side sectional view of a piston according to the present invention and a disassembled structure of internal components;

FIG. 5 is a schematic view of the structure of the levelness measuring mechanism according to the present invention;

FIG. 6 is a schematic structural view of a settlement monitoring mechanism of the present invention;

FIG. 7 is a schematic diagram of a rigid exhaust tube, a suction cup, a piston tube, and related components of the present invention.

Description of the figure numbers: 1. a settlement plate; 2. a dust-proof box; 3. a pressure stabilizing support mechanism; 301. a pneumatic tube; 302. a support bar; 303. a piston; 304. an exhaust hole; 305. a sponge block; 306. a sealing plate; 307. fiber cloth; 308. a fan-shaped limiting groove; 4. a levelness measuring mechanism; 401. rotating the supporting seat; 402. a angle measuring plate; 403. a connecting rod; 404. a rotating shaft; 405. a pointer; 406. a counterweight bracket; 5. a settlement monitoring mechanism; 501. a first measuring cylinder; 502. a second measuring cylinder; 503. a limiting rod; 504. a plunger rod; 505. a first base; 506. a hose; 507. a rigid exhaust pipe; 508. a suction cup; 509. a piston tube; 510. a piston rod; 511. a second base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-4, a settlement measuring device for bridge design includes a settlement plate 1 disposed on the bottom surface of a settlement mark, a pressure stabilizing support mechanism 3, a levelness measuring mechanism 4, and a settlement monitoring mechanism 5, wherein a dust-proof box 2 is installed on the ground close to the pier body of the bridge, the ground is reinforced for settlement prevention, the dust-proof box 2 is communicated with the outside by facing one side of the pier body of the bridge, and the settlement plate 1 is installed inside the dust-proof box 2 and supported by the pressure stabilizing support mechanism 3. The pressure stabilizing support mechanisms 3 are arranged at four corners of the bottom surface of the sedimentation plate 1, and have the functions of stabilizing pressure, preventing resetting and enhancing the flatness along with the height adjustment of the sedimentation plate 1; the levelness measuring mechanism 4 is arranged on the pressure stabilizing supporting mechanism 3 and is used for monitoring the levelness of the settlement plate 1; the settlement monitoring mechanism 5 is installed below the settlement plate 1, and measures the settlement of the settlement plate 1 after the settlement plate 1 is lowered.

The pressure stabilizing support mechanism 3 comprises air pressure pipes 301 and support rods 302, wherein the four air pressure pipes 301 are vertically fixed at four corners of the bottom surface of the settling plate 1, the support rods 302 are vertically fixed at the bottom surface of the dust-proof box 2, the top ends of the support rods 302 upwards penetrate into the air pressure pipes 301 and are in sliding fit with the air pressure pipes, and pistons 303 are fixed at the top ends of the support rods 302.

The inside cavity of piston 303 sets up its upper and lower top and all is the exhaust hole 304 that a plurality of and inside intercommunication were seted up to the equidistant annular, and the position of the inside laminating exhaust hole 304 of piston 303 all is equipped with sponge piece 305, once is equipped with a plurality of closing plates 306 between two sponge pieces 305, is equipped with fibre cloth 307 between two adjacent closing plates 306, has seted up fan-shaped spacing groove 308 on the closing plate 306, and the fan-shaped spacing groove 308 dislocation of a plurality of closing plates 306 is arranged.

The invention provides a settlement measuring device for bridge design, which comprises a dust-proof box 2 arranged on the ground, wherein the dust-proof box 2 is communicated with the outside towards the side edge of a bridge pier body, when the dust-proof box 2 is close to the pier body, a settlement mark protruding from the pier body is surrounded in the dust-proof box 2, a pressure stabilizing supporting mechanism 3 is designed on the dust-proof box 2 to lift up a settlement plate 1, the center of the settlement plate 1 is opposite to the settlement mark, so that the settlement mark is supported, the stable adjustment of the height of the settlement plate 1 is carried out through the balance adjustment of air pressure by the pressure stabilizing supporting mechanism 3, the stable support of the settlement plate 1 at any height is ensured, a levelness measuring mechanism 4 is arranged around the pressure stabilizing supporting mechanism 3 to adjust the levelness of the settlement plate 1, and the pressure balance of the settlement mark during settlement and the adjustment stability of the pressure stabilizing supporting mechanism 3 are detected.

The pressure stabilizing support is realized by movably connecting four pneumatic tubes 301 and four support rods 302, the support rods 302 are partially inserted into the pneumatic tubes 301, a piston 303 is fixed, the piston 303 is positioned in the middle of the pneumatic tubes 301, the air pressure on the upper side and the lower side of the piston 303 is stable and in a sealing state, when the sedimentation mark is pressed down, the piston 303 moves up to change the pressure balance of the pneumatic tubes 301 when the sedimentation plate 1 moves down, the pressure balance is quickly recovered through the air permeability of the piston 303, and the state of the air pressure balance is reestablished, so that the supporting force of the sedimentation plate 1 is kept balanced and stable, the descending stability of the sedimentation plate 1 is facilitated, and the supervision and measurement of the sedimentation degree are facilitated.

According to the invention, the piston 303 is set to be in a hollow state, the upper end and the lower end of the piston 303 are provided with the vent holes 304 to remove the sealing performance of the vent holes, the plurality of sealing plates 306 are filled in the piston 303 again, the sealing plates 306 are cut into the fan-shaped limiting grooves 308 for exhausting, the fan-shaped limiting grooves 308 of the plurality of sealing plates 306 are arranged in a staggered mode to avoid direct ventilation, a fiber cloth 307 is arranged between the two sealing plates 306 to serve as an interlayer, a small amount of communication effect is achieved between the two adjacent fan-shaped limiting grooves 308, the upper end and the lower end of the inner part of the piston 303 are provided with the sponge blocks 305, the plurality of sealing plates 306 and the fiber cloth 307 are clamped between the two sponge blocks 305, the descending distance of the settling plate 1 is larger by utilizing the elasticity of the sponge blocks 305, and when the air pressure deviation becomes larger, the air permeability of the adjacent sealing plates 306 is increased by extruding the sponge blocks 305, so that the rapid pressure stabilizing balance is realized.

Example 2:

referring to fig. 3 and 5, the embodiment 1 is different from the above embodiments; levelness survey mechanism 4 is including rotating supporting seat 401, volume board 402, two rotate supporting seat 401 and be fixed in the front side pneumatic tube 301 bottom outside respectively, be equipped with respectively rather than rotate the connecting rod 403 of being connected between two rotate supporting seat 401, volume board 402 is located connecting rod 403 front side middle part, connecting rod 403 middle part is fixed with pivot 404 along the horizontal direction is perpendicular, pivot 404 runs through along volume board 402 centre of a circle position and is connected rather than rotating, pivot 404 front end is fixed with the pointer 405 of vertical setting, volume board 402 rear end be fixed with the side middle part pivoted counter weight support 406 of settlement plate 1.

In the invention, because the four pneumatic tubes 301 are independent, when the settlement plate 1 is stressed uniformly, the respective pressure and the moving displacement are the same, the levelness measuring mechanism 4 is arranged around the two connected pneumatic tubes 301 to detect whether the pressure on one side surface of the settlement plate 1 is balanced, and the real-time balance degree detection in the process of installing the settlement plate 1 and monitoring the settlement degree can be carried out by installing two groups of levelness measuring mechanisms 4.

According to the invention, the bottom ends of two pneumatic tubes 301 are sleeved with rotary supporting seats 401, the two rotary supporting seats 401 are respectively and rotatably connected with the two ends of a connecting rod 403, the connecting rod 403 is in a horizontal state, a weight plate 402 is connected to the middle part of the front side of the connecting rod 403 through a counterweight bracket 406, the counterweight bracket 406 is rotatably connected with the middle part of a settlement plate 1, the vertical direction is always kept under the self gravity, a rotating shaft 404 welded to the middle part of the connecting rod 403 penetrates through the circle center position of the weight plate 402 and a pointer 405 is vertically fixed on the front side of the weight plate 402, when the settlement plate 1 inclines, the bottom ends of the two pneumatic tubes 301 are not in the same horizontal state, the connecting rod 403 inclines, the rotating shaft 404 and the pointer 405 deflect together, and the deflection direction and the deflection angle are determined by the pointer 405 pointing to the position of the weight plate 402.

The middle part of the sedimentation plate 1 corresponds to a pressure point of a sedimentation target, the bottom surface of the sedimentation plate 1 is uniformly provided with a pressure stabilizing support mechanism 3, a levelness measuring mechanism 4 is adopted to detect the pressure stabilizing support mechanism 3, whether the center of the sedimentation plate 1 deviates from the sedimentation target or not is detected, and the deviation direction of a pier body is monitored according to the inclination direction of the sedimentation plate 1.

Example 3:

referring to FIGS. 6-7, the embodiment 1-2 is different therefrom; the settlement monitoring mechanism 5 comprises a first measuring cylinder 501, a second measuring cylinder 502, the top of the first measuring cylinder 501 is communicated with the outside, a limiting rod 503 is vertically fixed in the middle of the bottom surface of the settlement plate 1, the bottom end of the limiting rod 503 is fixed with a plunger rod 504 which is inserted into the inside of the first measuring cylinder 501 and is connected with the first measuring cylinder in a sliding manner, a first base 505 is arranged at the bottom end of the first measuring cylinder 501, the first base 505 is fixedly connected with the bottom surface of the dust-proof box 2, and the bottom of the side edge of the first measuring cylinder 501 is connected with a hose 506 which is distributed in a Y shape.

The position of bridge pier shaft bottom both sides is located to a second measurement section of thick bamboo 502, and second measurement section of thick bamboo 502 bottom is equipped with second base 511, and second base 511 is 90 degrees arc structure settings and is fixed with at its tip with bridge pier shaft vertically stereoplasm blast pipe 507, and stereoplasm blast pipe 507 bottom mounting has sucking disc 508, and sucking disc 508 adsorbs in the pier shaft lateral wall, and stereoplasm blast pipe 507 lateral wall intercommunication is equipped with piston pipe 509, piston pipe 509 inside be equipped with rather than threaded connection's piston rod 510.

The invention fixes a limiting rod 503 in the middle of the bottom surface of a sedimentation plate 1 to lift a plunger rod 504 through the limiting rod 503, a first measuring cylinder 501 is arranged at the position right below the sedimentation plate 1, water is injected into the plunger rod 504, the plunger rod 504 is inserted into the first measuring cylinder 501 and is contacted with the water surface, the plunger rod 504 is connected with the first measuring cylinder 501 in a sliding way and has good sealing performance, two second measuring cylinders 502 are symmetrically arranged at two sides of the first measuring cylinder 501, specifically, the second measuring cylinder 502 is separated from a dust-proof box 2 and is arranged at the edge of a bridge pier body, the second measuring cylinder 502 is communicated with the first measuring cylinder 501 through a hose 506, the second measuring cylinder 502 is injected with a small amount of water, the second measuring cylinder 502 is at the same horizontal height, the second measuring cylinder 502 and the first measuring cylinder 501 are transparent pipes marked with scales, when the sedimentation plate 1 descends, the plunger rod 504 correspondingly slides downwards in the first measuring cylinder 501, observing the scale corresponding to the bottom end of the plunger rod 504, calculating the settling volume, moving the water discharged by the descending plunger rod 504 into the two second measuring cylinders 502, observing the water level difference of the two second measuring cylinders 502, finding the inclination of the pier body, and acquiring the inclination data of the pier body.

In the invention, a small amount of water is pre-stored in the second measuring cylinder 502, the second measuring cylinder is positioned at the same scale mark position after initial installation, the hole at the top end of the second measuring cylinder 502 is communicated with the outside, in order to prevent water from evaporating and spreading sealing oil on the water surface uniformly, after detection lasts for a period of time, the water levels of the two second measuring cylinders 502 are the same, the scale values of the water levels of the two second measuring cylinders 502 corresponding to the water levels are read, and the pier body inclination data is calculated by using the scale difference.

In the invention, the second measuring cylinder 502 is fixed with the pier shaft in a suction manner of the suction cup 508, specifically, the piston rod 510 with a threaded structure is rotated to change the pressure inside the hard exhaust pipe 507, improve the suction force of the suction cup 508, stabilize the second measuring cylinder 502, improve the friction force due to the threaded connection between the piston rod 510 and the piston pipe 509, avoid the resetting of the piston rod 510 after air suction and pressure reduction, and be convenient to disassemble.

The invention can also realize remote reading of the data of the first measuring cylinder 501 and the angle measuring plate 402 by installing a sensor or a monitoring probe.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a settlement measuring device for bridge design, subsides board (1) that carries out the bearing to it including locating subside mark bottom, it is equipped with dust proof box (2) that are fixed in ground to subside board (1) outside, dust proof box (2) laminating sets up its below ground at bridge pier shaft and prevents sinking to consolidate the setting, its characterized in that still includes:

the pressure stabilizing support mechanisms (3) are arranged at four corners of the bottom surface of the sedimentation plate (1), and are used for stabilizing pressure, preventing resetting and enhancing the flatness along with the height adjustment of the sedimentation plate (1);

the levelness measuring mechanism (4) is arranged on the pressure stabilizing supporting mechanism (3) and is used for monitoring whether the settling plate (1) is inclined in the normal direction or not for levelness monitoring, and monitoring the offset direction and offset data of the settling mark on the settling plate;

and the settlement monitoring mechanism (5) is arranged below the settlement plate (1) and is used for measuring the settlement of the descending settlement plate (1).

2. The device of claim 1, wherein the device comprises: the pressure stabilizing support mechanism (3) comprises air pressure pipes (301) and support rods (302), wherein the four air pressure pipes (301) are vertically fixed at four corners of the bottom surface of the settling plate (1), the support rods (302) are vertically fixed at the bottom surface of the dust-proof box (2), the top ends of the support rods upwards penetrate into the air pressure pipes (301) and are in sliding fit with the air pressure pipes, and pistons (303) are fixed at the top ends of the support rods (302).

3. The device of claim 2, wherein the device comprises: piston (303) inside cavity sets up its upper and lower top all is the exhaust hole (304) that a plurality of and inside intercommunication are seted up to the equidistant annular, the position of piston (303) inside laminating exhaust hole (304) all is equipped with sponge piece (305), two once be equipped with a plurality of closing plates (306) between sponge piece (305), adjacent two be equipped with fibre cloth (307) between closing plate (306), fan-shaped spacing groove (308) have been seted up on closing plate (306), it is a plurality of fan-shaped spacing groove (308) dislocation of closing plate (306) are arranged.

4. A settlement measuring device for bridge design according to claim 3, wherein: levelness survey mechanism (4) are including rotating supporting seat (401), angle gauge board (402), two rotate supporting seat (401) and be fixed in front side pneumatic tube (301) bottom outside respectively, two be equipped with respectively rather than rotate connecting rod (403) of being connected between rotating supporting seat (401), connecting rod (403) front side middle part is located in angle gauge board (402), connecting rod (403) middle part is followed the horizontal direction vertical fixation and is had pivot (404), pivot (404) run through along angle gauge board (402) centre of a circle position and rather than rotate and be connected, pivot (404) front end is fixed with pointer (405) of vertical setting, angle gauge board (402) rear end be fixed with the side middle part pivoted counter weight support (406) of settlement plate (1).

5. A settlement measuring device for bridge design according to claim 4, wherein: the settlement monitoring mechanism (5) comprises a first measuring cylinder (501) and a second measuring cylinder (502), the top of the first measuring cylinder (501) is communicated with the outside, a limiting rod (503) is vertically fixed in the middle of the bottom surface of the settlement plate (1), the bottom end of the limiting rod (503) is fixed with a plunger rod (504) which is inserted into the inside of the first measuring cylinder (501) and is connected with the first measuring cylinder in a sliding mode, a first base (505) is arranged at the bottom end of the first measuring cylinder (501), the first base (505) is connected and fixed with the bottom surface of the dust-proof box (2), and the bottom of the side edge of the first measuring cylinder (501) is connected with a hose (506) which is Y-shaped and distributed.

6. A settlement measuring device for bridge design according to claim 5, wherein: the position of bridge pier shaft bottom both sides is located in a second measurement section of thick bamboo (502), a second measurement section of thick bamboo (502) bottom is equipped with second base (511), second base (511) are 90 degrees arc structure settings and have at its end fixing with bridge pier shaft vertically stereoplasm blast pipe (507), stereoplasm blast pipe (507) bottom mounting has sucking disc (508), sucking disc (508) adsorb in pier shaft lateral wall, stereoplasm blast pipe (507) lateral wall intercommunication is equipped with piston pipe (509), piston pipe (509) inside be equipped with rather than threaded connection's piston rod (510).