A settlement measuring device for bridge construction

Abstract

The application discloses a settlement degree measuring device for bridge construction and relates to the field of bridge settlement measurement, which solves the problem that the existing bridge settlement degree measuring device is prone to causing the accumulation of internal rainwater and dust and silt impurities, and comprises a device bottom ring and a bridge body arranged on the inner side of the device bottom ring, a protective shell fixedly installed on the top of the device bottom ring, an annular top cover fixedly installed on the top of the protective shell, and a plurality of measurement rods arranged in a central symmetry on the inner side of the device bottom ring; further comprising a sealing mechanism for sealing the gap between the annular top cover and the bridge body, which is installed on the top of the annular top cover; the sealing mechanism can provide sealing between the annular top cover and the bridge body, prevent rainwater and silt impurities from entering the protective shell and the device bottom ring, ensure the accuracy of the measurement of the inclination of the bridge body by the measurement rods, and achieve the effects of sealing protection and improved measurement accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge settlement measurement, in particular to a settlement degree measuring device for bridge construction. BACKGROUND

[0002] Bridge settlement refers to the sinking deformation of the bridge structure during use due to factors such as self-load, traffic load, and foundation soil subsidence. Settlement can cause deformation and damage to the bridge structure, seriously affecting the safety and service life of the bridge. Therefore, timely and accurate measurement of the settlement of the bridge is an important means to ensure the safety of the bridge structure.

[0003] The frequency of bridge settlement testing depends on the type and use of the bridge and must be carried out regularly to ensure that any abnormal settlement problems are discovered in a timely manner to ensure the safety and service life of the bridge. The existing Chinese patent document CN117308872A discloses a settlement degree measuring device for bridge construction, which can measure the inclination angle of the bridge pier by the swing of the roller and L-shaped plate, and retain the maximum inclination angle of the bridge pier, facilitating subsequent workers to record the data. However, the outer side of the base is protected by the isolation cover and the dome cover. Since the dome cover is in the form of a ring structure, and there is a gap between the inner side of the dome cover and the bridge pier, rainwater and dust, sand and other impurities can fall through the gap between the dome cover and the bridge pier onto the base. With the accumulation of rainwater and dust, sand and other impurities, a large amount of accumulated water and impurity layer can be formed on the top of the base, which can hinder the swing of the L-shaped plate and reduce the accuracy of the settlement degree measurement. SUMMARY

[0004] The present application aims to provide a settlement degree measuring device for bridge construction, which can provide sealing between the annular top cover and the bridge body, prevent rainwater and sand impurities from entering the protective shell and the device bottom ring, and ensure the accuracy of the measurement of the inclination of the bridge body by the measuring rod.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The utility model provides a kind of settlement degree measuring device for bridge construction, including: device bottom ring and the bridge body being arranged in the inside of the device bottom ring, the top of the device bottom ring is fixedly installed with protective shell, the top of the protective shell is fixedly installed with annular top cover, the diameter of annular top cover inside is greater than the diameter of bridge body, the inside of the device bottom ring is provided with multiple measurement rods being central symmetry, for measuring the inclination of bridge body;It further includes: sealing mechanism, for sealing the gap between the annular top cover and the bridge body, the sealing mechanism is installed on the top of the annular top cover;Test mechanism, for making multiple measurement rods real-time settlement degree test to bridge body, the test mechanism is installed on the top of the device bottom ring;Leveling mechanism, for making multiple measurement rods and bridge body synchronous alignment, the leveling mechanism is installed on the top of the device bottom ring.

[0007] Preferably, the sealing mechanism includes a silica gel sleeve disposed on the top of the annular top cover, the silica gel sleeve is annularly sleeved on the outside of the bridge body, the silica gel sleeve is attached to the outside of the bridge body, both ends of the silica gel sleeve are fixedly installed with a sleeve ring, the top of the annular top cover is fixedly installed with two T-shaped sleeves for limiting the sleeve of the two sleeve rings, respectively, to facilitate positioning of the silica gel sleeve, the outside of the silica gel sleeve is inclined, facilitating rainwater to slide off, the bottom of the silica gel sleeve is fixedly installed with a silica gel strip, the outside of the silica gel strip is in contact with the inside of the annular top cover, facilitating the silica gel sleeve to be attached to the annular top cover, both ends of the silica gel sleeve are provided with glue applying seams for applying waterproof adhesive, facilitating the silica gel sleeve to be tightly sleeved on the bridge body and fixed on the annular top cover.

[0008] Preferably, the testing mechanism comprises a ring frame fixedly installed on the top of the bottom ring of the device, an annular water box fixedly installed on the inner side of the ring frame, a contact ball fixedly installed on the top end of the measuring rod, the contact ball being in contact with the outer side of the bridge body to keep the measuring rod parallel to the bridge body, a mounting seat rotatably installed on the bottom end of the measuring rod, the mounting seat being fixedly installed on the top of the ring frame, the mounting seat being used as a fulcrum for the measuring rod to swing when the bridge body is tilted, a fixed plate fixedly installed on the side of the measuring rod away from the bridge body, an arc-shaped piston rod fixedly installed on the outer side of the fixed plate, a plurality of arc-shaped water injection cylinders fixedly installed on the outer side of the ring frame and matched with the arc-shaped piston rods, a water injection pipe fixedly installed on the bottom end of the arc-shaped water injection cylinder and the inner side of the annular water box, the arc-shaped piston rod being able to drive the arc-shaped piston rod to move along the inner side of the arc-shaped water injection cylinder when the measuring rod swings, water in the arc-shaped water injection cylinder being able to enter the annular water box through the water injection pipe, an arc-shaped spring provided on the outer side of the arc-shaped piston rod and fixedly installed between the fixed plate and the arc-shaped water injection cylinder, and a liquid level detector fixedly installed on the top of the ring frame and extending into the annular water box, the liquid level detector being used to determine whether the bridge body is tilted according to the liquid level in the annular water box.

[0009] Preferably, the leveling mechanism comprises a mounting plate provided on the outer side of the arc-shaped water injection cylinder, two insertion rods symmetrically and slidingly extending to the inner side of the arc-shaped water injection cylinder and fixedly installed on the outer side of the mounting plate, an insertion block fixedly installed between the two insertion rods, a plurality of insertion grooves equidistantly distributed on the outer side of the arc-shaped piston rod and matched with the insertion block, the top of the insertion groove and the end of the insertion block away from the insertion rod both being inclined to enable the insertion groove on the arc-shaped piston rod to drive the insertion block to move when the arc-shaped piston rod moves, a positioning spring provided on the outer side of the insertion rod and fixedly installed between the inner side of the arc-shaped water injection cylinder and the insertion block, the insertion block being inserted into the insertion groove of the arc-shaped piston rod by the rebound force of the positioning spring to prevent the arc-shaped piston rod from rebounding, two positioning plates symmetrically distributed and fixedly installed on the outer side of the mounting plate, a sliding roller rotatably installed between the two positioning plates, a rotating ring provided between the mounting plates, the rotating ring being located between the mounting plate and the sliding roller, a push strip fixedly installed on the outer side of the rotating ring and provided on the outer side of the sliding roller, the distance between the rotating ring and the mounting plate being greater than the length of the insertion block to prevent the mounting plate from contacting the rotating ring when the mounting plate moves, the push strip being able to drive the sliding roller to move, and a plurality of sliding cylinders centrally symmetrically and slidingly sleeved on the outer side of the rotating ring, the sliding cylinders and the bottom ring of the device being fixedly installed with a support to provide positioning for the rotating ring.

[0010] Preferably, the top of the mounting seat is fixedly installed with two angle discs symmetrically distributed and used to observe and measure the inclination angle.

[0011] Preferably, the outer side of the measuring rod is fixedly provided with two indicating plates matched with the two angle discs respectively, so as to quickly obtain the inclination angle of the measuring rod.

[0012] Preferably, the top of the mounting seat is fixedly provided with a limiting block, and the side of the measuring rod away from the fixed plate is in contact with the outer side of the limiting block, so as to ensure that the measuring rod is in a vertical state.

[0013] Preferably, the top of the annular water box is fixedly provided with a water supplement pipe extending above the annular frame, and the top of the water supplement pipe is provided with a sealing plug for water injection of the annular water box.

[0014] Preferably, the outer side of the liquid level detector is fixedly provided with an alarmable control panel, so as to timely alarm and prevent.

[0015] Preferably, the measuring rod is connected with the contact ball through a screw rod, so as to facilitate installation, disassembly and replacement.

[0016] The above-mentioned embodiments of the present application can achieve the beneficial effects, including:

[0017] The sealing mechanism can provide sealing between the annular top cover and the bridge body, prevent rainwater and mud impurities from entering the protective shell and the device bottom ring, ensure the accuracy of the measurement of the inclination of the bridge body by the measuring rod, and achieve the effects of sealing protection and improving the measurement accuracy.

[0018] The testing mechanism can timely alarm and notify when the bridge body is excessively inclined at any angle, and the separate liquid level detector is used for real-time detection, so as to reduce the cost of bridge measurement and improve the efficiency of detection, thereby achieving the effect of timely alarm.

[0019] The leveling mechanism can quickly keep the plurality of measuring rods parallel to the bridge body, improve the installation efficiency of the device and the bridge body, prevent the measuring rods from rebounding, and ensure the observation of the maximum inclination angle of the bridge body, thereby achieving the effects of quick installation and convenient observation and measurement. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 It is a schematic diagram of the structure of the protective shell and the measuring rod in the present application;

[0022] Figure 3 It is a schematic diagram of the structure of the silica gel sleeve and the sleeve ring in the present application;

[0023] Figure 4 It is a schematic diagram of the structure of the annular frame and the annular water box in the present application;

[0024] Figure 5 For the angle disc and contact ball structure in the present application;

[0025] Figure 6 For the arc-shaped water injection cylinder and arc-shaped piston rod structure in the present application;

[0026] Figure 7 For Figure 2 A zone in the present application is enlarged structure schematic diagram;

[0027] Figure 8 For Figure 6 B zone in the present application is enlarged structure schematic diagram;

[0028] Figure 9 For the slide cylinder and rotating ring structure in the present application.

[0029] In the figure: 1, device bottom ring; 2, bridge body; 3, protective shell; 4, annular top cover; 5, measuring rod; 6, silica gel sleeve; 7, collar; 8, T-shaped sleeve; 9, silica gel strip; 10, annular frame; 11, annular water box; 12, contact ball; 13, mounting seat; 14, fixed plate; 15, arc-shaped piston rod; 16, arc-shaped water injection cylinder; 17, arc-shaped spring; 18, liquid level detector; 19, mounting plate; 20, plug rod; 21, plug block; 22, positioning spring; 23, positioning plate; 24, slide roller; 25, rotating ring; 26, push bar; 27, slide cylinder; 28, support; 29, angle disc; 30, indicating plate; 31, limit block; 32, water replenishment pipe; 33, water injection pipe; 34, sealing plug; 35, control panel; 36, screw rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0031] Embodiment one: please refer to Figure 1 and Figure 3The utility model provides a kind of settlement degree measuring device for bridge construction in the drawing, including device bottom ring 1 and the bridge body 2 being set to device bottom ring 1 inner side, the top of device bottom ring 1 is fixedly installed with protective shell 3, the top of protective shell 3 is fixedly installed with annular top cover 4, the diameter of annular top cover 4 inner side is greater than the diameter of bridge body 2, the inner side of device bottom ring 1 is provided with multiple measurement rods 5 being central symmetry, for measuring the inclination of bridge body 2;It further includes: sealing mechanism, for the gap sealing between annular top cover 4 and bridge body 2, sealing mechanism is installed at the top of annular top cover 4;Testing mechanism, for making multiple measurement rods 5 real-time settlement degree test to bridge body 2, testing mechanism is installed at the top of device bottom ring 1;Leveling mechanism, for making multiple measurement rods 5 and bridge body 2 synchronous alignment, leveling mechanism is installed at the top of device bottom ring 1.

[0032] Sealing mechanism includes the silica gel sleeve 6 being set to the top of annular top cover 4, the silica gel sleeve 6 is annularly connected to the outside of bridge body 2, the silica gel sleeve 6 is attached to the outside of bridge body 2, both ends of silica gel sleeve 6 are fixedly installed with sleeve ring 7, the top of annular top cover 4 is fixedly installed with two T-shaped sleeve seats 8 for two sleeve rings 7 limiting sleeve connection respectively, to facilitate the positioning of silica gel sleeve 6, the outside of silica gel sleeve 6 is inclined structure, to facilitate rain sliding, the bottom of silica gel sleeve 6 is fixedly installed with silica gel rib 9, the outside of silica gel rib 9 is in contact with the inner side of annular top cover 4, to facilitate silica gel sleeve 6 to be attached to annular top cover 4, both ends of silica gel sleeve 6 are provided with glue applying seam for applying waterproof adhesive, to facilitate silica gel sleeve 6 to be tightly sleeved on bridge body 2, and fixed on annular top cover 4;

[0033] The elasticity of silica gel sleeve 6 can be stretched to the outside of bridge body 2, and silica gel rib 9 is attached to the inner side of annular top cover 4, by the fixation of two sleeve rings 7 and two T-shaped sleeve seats 8, silica gel sleeve 6 can be quickly fixed between bridge body 2 and annular top cover 4, and reinforced by the glue applying seam on silica gel sleeve 6, to prevent rain and silt impurities from entering protective shell 3 and device bottom ring 1, ensure the accuracy of measurement rod 5 inclination measurement to bridge body 2.

[0034] Working principle: first, the user will strip of silica gel sleeve 6 in the bridge body 2 outside, one of the sleeve 7 in the T-shaped sleeve 8, and the silica gel bar 9 ring into the ring-shaped top cover 4 inside, so that the silica gel bar 9 can be closely attached to the inner ring of the ring-shaped top cover 4, at this time, the other sleeve 7 in the T-shaped sleeve 8, silica gel sleeve 6 can be a barrel-shaped sleeve in the bridge body 2 outside and the top of the ring-shaped top cover 4, finally, the user will waterproof adhesive coated on the silica gel sleeve 6 glue seam, silica gel sleeve 6 reinforcement, can complete the sealing between the bridge body 2 and the ring-shaped top cover 4, prevent rain and silt impurities into the inside of the protective shell 3, and use the elasticity of the silica gel sleeve 6, will not affect the inclination of the bridge body 2, so as to achieve the effect of sealing protection and improve the measurement accuracy.

[0035] Example two: please refer to Figures 2-9 , the embodiment for example one further illustrates, the test mechanism in the figure includes the ring-shaped frame 10 fixedly installed on the top of the device bottom ring 1, the inner side of the ring-shaped frame 10 is fixedly installed with the ring-shaped water box 11, the top end of the measuring rod 5 is fixedly installed with the contact ball 12, the contact ball 12 is in contact with the outer side of the bridge body 2, so that the measuring rod 5 and the bridge body 2 keep parallel, the bottom end of the measuring rod 5 is rotatably installed with the mounting seat 13, so that when the bridge body 2 is inclined, the measuring rod 5 can swing with the mounting seat 13 as the fulcrum, the mounting seat 13 is fixedly installed on the top of the ring-shaped frame 10, the side of the measuring rod 5 away from the bridge body 2 is fixedly installed with the fixed plate 14, the outer side of the fixed plate 14 is fixedly installed with the arc-shaped piston rod 15, the outer side of the ring-shaped frame 10 is fixedly installed with a plurality of arc-shaped water injection cylinders 16 respectively matched with a plurality of arc-shaped piston rods 15, the bottom end of the arc-shaped water injection cylinder 16 is fixedly installed with the water injection pipe 33, the water injection pipe 33 is fixedly installed in the inner side of the ring-shaped water box 11, when the measuring rod 5 swings, the arc-shaped piston rod 15 can be driven to move along the inner side of the arc-shaped water injection cylinder 16, the water in the arc-shaped water injection cylinder 16 can enter the ring-shaped water box 11 through the water injection pipe 33, the outer side of the arc-shaped piston rod 15 is provided with the arc-shaped spring 17, the arc-shaped spring 17 is fixedly installed between the fixed plate 14 and the arc-shaped water injection cylinder 16, the top of the ring-shaped frame 10 is fixedly installed with the liquid level detector 18 extending into the inside of the ring-shaped water box 11, according to the liquid level in the ring-shaped water box 11, whether the bridge body 2 is inclined is judged.

[0036] The leveling mechanism comprises a mounting plate 19 arranged outside the arc-shaped water injection cylinder 16, two insertion rods 20 symmetrically slidingly extending to the inside of the arc-shaped water injection cylinder 16 are fixedly arranged outside the mounting plate 19, an insertion block 21 is fixedly arranged between the two insertion rods 20, a plurality of insertion grooves that are equidistantly distributed and matched with the insertion block 21 are arranged on the outside of the arc-shaped piston rod 15, the top of the insertion groove and the end of the insertion block 21 away from the insertion rod 20 are both inclined surface structures, so that when the arc-shaped piston rod 15 moves, the insertion groove on the arc-shaped piston rod 15 can push the insertion block 21 to move, a positioning spring 22 is arranged outside the insertion rod 20, the positioning spring 22 is fixedly arranged between the inside of the arc-shaped water injection cylinder 16 and the insertion block 21, the insertion block 21 is inserted into the insertion groove of the arc-shaped piston rod 15 by the resilience of the positioning spring 22, so as to prevent the arc-shaped piston rod 15 from rebounding, two positioning plates 23 symmetrically distributed are fixedly arranged outside the mounting plate 19, a sliding roller 24 is rotatably arranged between the two positioning plates 23, a rotating ring 25 is arranged between the mounting plate 19 and the sliding roller 24, the rotating ring 25 is located between the mounting plate 19 and the sliding roller 24, a push strip 26 fixedly arranged outside the rotating ring 25 is arranged outside the sliding roller 24, the distance between the rotating ring 25 and the mounting plate 19 is greater than the length of the insertion block 21, so as to prevent the mounting plate 19 from contacting the rotating ring 25 when moving, the push strip 26 can push the sliding roller 24 to move, a plurality of sliding cylinders 27 that are centrally symmetric are slidingly sleeved outside the rotating ring 25, supports 28 fixedly arranged between the sliding cylinder 27 and the device bottom ring 1 are arranged to provide positioning for the rotating ring 25.

[0037] In this embodiment: the measuring rod 5 can be in contact with the outer side of the bridge body 2 through the contact ball 12, ensuring that the measuring rod 5 remains parallel to the bridge body 2. When the bridge body 2 tilts due to settlement, the bridge body 2 pushes the contact ball 12 in the corresponding tilt direction to move, causing the contact ball 12 to push the measuring rod 5 to swing around the mounting seat 13 as the pivot, and the mounting seat 13 drives the arc-shaped piston rod 15 to move along the inner side of the arc-shaped water injection cylinder 16, causing the water in the arc-shaped water injection cylinder 16 to be injected into the annular water tank 11 through the water injection pipe 33, causing the water level in the annular water tank 11 to rise. At this time, the liquid level detector 18 can obtain the current water level, and further obtain the settlement degree of the bridge body 2. Thus, one liquid level detector 18 can monitor the tilt of the bridge body 2, reducing the cost of measuring the settlement degree of the bridge body 2, facilitating later maintenance, and when the water level is too high, an alarm can be sent to the user, facilitating the user to handle it in time. At the same time, when the arc-shaped piston rod 15 moves, the inclined surface at one end of the insert block 21 can be pushed to move through the slot on the outer side of the arc-shaped piston rod 15, causing the insert block 21 to push the insert rod 20 to move and compress the positioning spring 22. When the arc-shaped piston rod 15 stops moving, the rebounding force of the positioning spring 22 causes the insert block 21 to be inserted into the corresponding slot, and the bottom of the insert block 21 is in contact with the bottom of the slot, providing positioning for the arc-shaped piston rod 15 to prevent rebounding, ensuring that the measuring rod 5 obtains the maximum tilt angle of the bridge body 2, facilitating later observation, and thus improving the efficiency of detection.

[0038] During the early installation, the user rotates the rotating ring 25 to move along the outer side of the sliding cylinder 27, causing the end of the push bar 26 to abut against the outer side of the sliding roller 24, causing the sliding roller 24 to drive the mounting plate 19 to move through the positioning plate 23, causing the mounting plate 19 to pull the insert block 21 to move through the insert rod 20, causing the insert block 21 to be pulled out of the slot on the arc-shaped piston rod 15, causing the arc-shaped spring 17 to push the fixed plate 14 to cause the measuring rod 5 to swing towards the bridge body 2. The contact balls 12 on the plurality of measuring rods 5 can be in contact with the outer side of the bridge body 2 at the same time, and the plurality of measuring rods 5 can be parallel to the bridge body 2 at the same time, improving the convenience of installation.

[0039] Embodiment three: please refer to Figure 5 and Figure 6 The top of the mounting seat 13 is fixedly installed with two angle discs 29 that are symmetrically distributed, which are used to observe and measure the tilt angle. The outer side of the measuring rod 5 is fixedly installed with two indicating plates 30 that cooperate with the two angle discs 29, respectively, facilitating quick obtaining of the tilt angle of the measuring rod 5. The top of the mounting seat 13 is fixedly installed with a limiting block 31, and the side of the measuring rod 5 away from the fixed plate 14 is in contact with the outer side of the limiting block 31, ensuring that the measuring rod 5 is in a vertical state.

[0040] In the embodiment, when the measuring rod 5 swings, the indicating plate 30 can be driven to move along the outer side of the angle disc 29, and when the user periodically observes, the user can obtain the inclination of the bridge body 2 according to the angle indicated by the indicating plate 30 on the angle disc 29, and further obtain the settlement degree of the bridge body 2, thereby improving the convenience of observation, and when the measuring rod 5 is reset, the measuring rod 5 can be in contact with the limiting block 31, so as to prevent the rebounding force of the arc-shaped spring 17 from being too large and causing the contact ball 12 to knock the bridge body 2.

[0041] Embodiment four: please refer to Figure 4 and Figure 6 The embodiment further illustrates other embodiments, and the top of the annular water box 11 in the drawing is fixedly installed with a water supplement pipe 32 extending above the annular frame 10, the top of the water supplement pipe 32 is installed with a sealing plug 34 for supplementing water to the annular water box 11, the outer side of the liquid level detector 18 is fixedly installed with an alarmable control panel 35, so as to facilitate timely alarm and prevention, and the measuring rod 5 is connected to the contact ball 12 through a screw rod 36, so as to facilitate installation, disassembly and replacement.

[0042] In the embodiment, the user can open the sealing plug 34, supplement water to the annular frame 10 through the water supplement pipe 32, and the control panel 35 on the liquid level detector 18 can obtain the water injection height, when the water level in the annular water box 11 increases, the control panel 35 can timely alarm and inform, so as to facilitate the user to timely repair the bridge body 2, the user can rotate the contact ball 12 to disassemble the contact ball 12 from the screw rod 36 on the measuring rod 5, so as to facilitate installation, disassembly and replacement, and the contact ball 12 is adapted to more sizes of the bridge body 2.

[0043] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply that any such actual relationship or order exists between or among the entities or operations. Also, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article or apparatus.

[0044] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A settlement measuring device for bridge construction, characterized by, The utility model relates to a bridge deck testing device, including: Device bottom ring (1) with the bridge body (2) of setting in the inside of device bottom ring (1), the top fixed mounting of device bottom ring (1) has the protection shell (3), the top fixed mounting of protection shell (3) has annular top cover (4), the inside of device bottom ring (1) is provided with a plurality of center symmetry measuring rod (5); Also including: Sealing mechanism for the gap sealing between annular top cover (4) with bridge body (2), sealing mechanism installs at the top of annular top cover (4), sealing mechanism includes the silica gel cover (6) of setting at the top of annular top cover (4), the outside of bridge body (2) is annularly sleeved with silica gel cover (6), both ends of silica gel cover (6) are fixedly installed with sleeve ring (7), the top of annular top cover (4) is fixedly installed with two T-shaped sleeve seat (8) for two sleeve ring (7) limit sleeve respectively, the outside of silica gel cover (6) is inclined plane structure, the bottom of silica gel cover (6) is fixedly installed with silica gel rib (9), the outside of silica gel rib (9) is in contact with the inside of annular top cover (4), both ends of silica gel cover (6) are provided with glue applying seam for applying waterproof adhesive; Testing mechanism for making a plurality of measuring rod (5) real-time settlement degree test to bridge body (2), testing mechanism installs at the top of device bottom ring (1), testing mechanism includes the annular frame (10) of fixed installation at the top of device bottom ring (1), the inside of annular frame (10) is fixedly installed with annular water box (11), the top of measuring rod (5) is fixedly installed with contact ball (12), contact ball (12) is in contact with the outside of bridge body (2), the bottom of measuring rod (5) is rotatably installed with mounting seat (13), mounting seat (13) is fixedly installed at the top of annular frame (10), the side of measuring rod (5) away from bridge body (2) is fixedly installed with fixed plate (14), the outside of fixed plate (14) is fixedly installed with arc-shaped piston rod (15), the outside of annular frame (10) is fixedly installed with a plurality of arc-shaped water injection cylinder (16) respectively matched with a plurality of arc-shaped piston rod (15), the bottom of arc-shaped water injection cylinder (16) is fixedly installed with water injection pipe (33), water injection pipe (33) is fixedly installed in the inside of annular water box (11), the outside of arc-shaped piston rod (15) is provided with arc-shaped spring (17), arc-shaped spring (17) is fixedly installed between fixed plate (14) and arc-shaped water injection cylinder (16), the top of annular frame (10) is fixedly installed with liquid level detector (18) extending to the inside of annular water box (11); Leveling mechanism for making a plurality of measuring rod (5) and bridge body (2) synchronous alignment, leveling mechanism installs at the top of device bottom ring (1).

2. The settlement measuring device for bridge construction according to claim 1, wherein: The leveling mechanism comprises a mounting plate (19) arranged outside the arc-shaped water injection cylinder (16), two insertion rods (20) symmetrically slidingly extending to the inside of the arc-shaped water injection cylinder (16) are fixedly arranged outside the mounting plate (19), an insertion block (21) is fixedly arranged between the two insertion rods (20), a plurality of insertion grooves equidistantly distributed and matched with the insertion block (21) are arranged on the outside of the arc-shaped piston rod (15), the top of the insertion groove and the end of the insertion block (21) away from the insertion rod (20) are both in a slope structure, a positioning spring (22) is arranged outside the insertion rod (20), the positioning spring (22) is fixedly arranged between the inside of the arc-shaped water injection cylinder (16) and the insertion block (21), two positioning plates (23) symmetrically distributed are fixedly arranged outside the mounting plate (19), a sliding roller (24) is rotatably arranged between the two positioning plates (23), a rotating ring (25) is arranged between the mounting plate (19) and the sliding roller (24), a push strip (26) fixedly arranged outside the rotating ring (25) is arranged outside the sliding roller (24), a plurality of sliding cylinders (27) symmetrically arranged at the center are slidingly sleeved outside the rotating ring (25), and a support (28) is fixedly arranged between the sliding cylinder (27) and the device bottom ring (1).

3. The settlement measuring device for bridge construction according to claim 1, wherein: The top of the mounting seat (13) is fixedly provided with two angle discs (29) symmetrically arranged.

4. The settlement measuring device for bridge construction according to claim 3, wherein: The outside of the measuring rod (5) is fixedly provided with two indicating plates (30) matched with the two angle discs (29) respectively.

5. The settlement measuring device for bridge construction of claim 1, wherein: The top of the mounting seat (13) is fixedly provided with a limiting block (31), and the side of the measuring rod (5) away from the fixed plate (14) is in contact with the outside of the limiting block (31).

6. The settlement measuring device for bridge construction of claim 1, wherein: The top of the annular water box (11) is fixedly provided with a water supplement pipe (32) extending above the annular frame (10), and the top of the water supplement pipe (32) is provided with a sealing plug (34).

7. The settlement measuring device for bridge construction of claim 1, wherein: The outside of the liquid level detector (18) is fixedly provided with an alarmable control panel (35).

8. The settlement measuring device for bridge construction of claim 1, wherein: The measuring rod (5) is connected with the contact ball (12) through a screw rod (36).

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