Water seepage detection equipment for highway bridge pavement

Abstract

The invention provides highway bridge pavement water seepage detection equipment, and relates to the technical field of road construction detection, and the highway bridge pavement water seepage detection equipment comprises a detection base, a water injection assembly, an exhaust cylinder, a buoyancy sealing structure, an air pressure measurement assembly and an air extraction assembly. According to the invention, the buoyancy sealing structure formed by the inner plug piece and the outer plug piece is designed, and the air pressure measuring assembly for detecting the air pressure in the exhaust cylinder and the air extracting assembly for extracting the air in the exhaust cylinder are connected, so that during use, the air extracting assembly works to form a negative pressure state in the water seepage detection cavity; when the water seepage detection cavity is full of liquid, the outer plug piece is jacked upwards through the buoyancy of the liquid, the inner plug piece and the outer plug piece form a closed structure, and the air exhaust assembly continues to work, so that high negative pressure is formed in the air exhaust barrel; therefore, whether the water seepage detection cavity is full of water can be judged according to the air pressure value measured by the air pressure measurement assembly.

Description

Technical Field

[0001] The invention relates to the technical field of road construction detection, in particular to a water seepage detection device for a highway bridge pavement. Background Art

[0002] Pavement water seepage testing is an important method to evaluate the water seepage performance of asphalt pavement. It is mainly used to determine the water resistance of the pavement, which is crucial to the durability and water stability of the pavement.

[0003] The water seepage detection equipment currently used determines the water seepage coefficient based on the water seepage experiment. That is, the water seepage detection equipment is sealed and placed on the road surface, and then the water seepage detection cavity is filled with water. After waiting for a period of time T (unit s), the volume of water seepage ΔV (unit ml) is observed and recorded, and then the formula is used to determine the water seepage coefficient. The water seepage coefficient is calculated to characterize the water seepage condition of the road surface.

[0004] During the water seepage test, it is necessary to accurately determine the moment when the water seepage detection chamber is filled with water. The traditional method is mainly to determine it by observing the water discharged from the exhaust hole at the top of the water seepage detection chamber. However, the observation of the operator is accidental, and some bubbling water will also affect the observer's judgment, resulting in poor reliability of the experimental results. For this reason, the present invention provides a new type of water seepage detection equipment for highway bridge pavement. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a water seepage detection device for highway bridge pavement, which solves the problem that the traditional method is mainly to determine the water seepage by observing the discharge of water from the exhaust hole located at the top of the water seepage detection chamber, but the observation of the operator is accidental, and some bubbling water may also affect the observer's judgment, thereby causing poor reliability of the experimental results.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A water seepage detection device for a road bridge pavement comprises a detection base, the bottom of which is buckled on the road bridge pavement to form a water seepage detection cavity; The top of the detection base is connected to a water injection assembly for injecting liquid into the water seepage detection cavity, and a recording element for displaying the amount of injected liquid is provided on the water injection assembly; The top of the detection base is connected with an exhaust cylinder body connected with the water seepage detection cavity, the inner top of the detection base is provided with an annular cavity corresponding to the exhaust cylinder body, the top of the annular cavity is provided with a mounting opening, an inner plugging piece is fixedly installed in the mounting opening, a long hole is provided on the side of the inner plugging piece, an outer side of the inner plugging piece is slidably connected with an outer plugging piece, and a floating piece is provided on the outer side of the outer plugging piece; It also includes: a pressure measuring component for detecting the gas pressure inside the exhaust cylinder and a gas extraction component for extracting the gas inside the exhaust cylinder; The air pressure value measured by the air pressure measuring component is used to determine whether the water seepage detection cavity is full of water.

[0007] Preferably, the detection base comprises: A cover-shaped body, wherein a connection port is fixedly arranged at the top center of the cover-shaped body, and a first flow channel is provided in the middle of the connection port.

[0008] Preferably, it further comprises: an annular auxiliary member, the annular auxiliary member comprising: An outer ring member, wherein at least three sets of centering screws are installed on the outer threads of the outer ring member; An inner ring member, the inner ring member is located inside the outer ring member, an annular space is formed between the inner ring member and the outer ring member, the inner ring member is fixed relative to the outer ring member by means of at least three sets of centering screws, the height of the inner ring member is smaller than the height of the outer ring member, a sealing contact portion extending outward is provided on the top of the inner ring member, and the bottom end of the cap-shaped body corresponds to the sealing contact portion; The outer side of the inner ring is fixedly connected with a crossbar portion, the crossbar portion is located above the centering screw, and the bottom of the cover-shaped body is fixedly connected with a snap-fit ​​piece corresponding to the crossbar portion; The centering screw comprises a rod body, one end of which is a spherical head, the other end of which is fixedly connected with a large head, an outer side of which is provided with an external thread, and an end of which is away from the rod body and is provided with a hexagonal notch.

[0009] Preferably, the water injection assembly comprises: An adapter, wherein the top of the cover-shaped body is fixedly connected with a support member, the adapter is located above the cover-shaped body, and the adapter and the support member are fixedly installed; A valve body, one end of the valve body being threadedly mounted on the connection port, and the other end of the valve body being threadedly mounted on the bottom end of the adapter; The recording member for displaying the amount of injected liquid is a measuring cylinder, the bottom end of the measuring cylinder is fixedly mounted on the top end of the adapter, and the measuring cylinder is communicated with the second flow channel of the adapter.

[0010] Preferably, the adapter comprises: An adapter tube, the outer side of which is fixedly connected with a flange portion, and the flange portion is fixedly connected to the top end of the support member; The adapter tube has a second flow channel inside, the top end of the adapter tube is provided with a flange connection end, and the bottom end of the adapter tube is provided with a threaded connection end.

[0011] Preferably, the support member includes: a support rod, the bottom end of the support rod is fixedly connected to the top end of the cover-shaped body, the top of the support rod is fixedly connected to a threaded rod, a step with the end face facing upward is formed between the threaded rod and the support rod, the threaded rod passes through the flange part, and a nut is threadedly installed on the threaded rod and above the flange part.

[0012] Preferably, the air pressure measuring assembly comprises: a barometer and a metal air pipe, one end of the metal air pipe is fixedly connected to the exhaust cylinder, and the other end of the metal air pipe is fixedly connected to the detection port of the barometer.

[0013] The present invention provides a water seepage detection device for a highway bridge pavement, which has the following beneficial effects: The present invention designs a buoyancy sealing structure composed of an inner plug and an outer plug, and connects an air pressure measuring component for detecting the air pressure of the gas inside the exhaust cylinder and an air pumping component for extracting the gas inside the exhaust cylinder. When in use, the air pumping component works to form a negative pressure state in the water seepage detection chamber, which is beneficial to the rapid water injection of the water injection component. When the water seepage detection chamber is full of liquid, the buoyancy of the liquid pushes the outer plug upward, and the inner plug and the outer plug form a closed structure. The air pumping component continues to work to form a relatively high negative pressure in the exhaust cylinder, so that it is possible to judge whether the water seepage detection chamber is full of water through the air pressure value measured by the air pressure measuring component. Compared with the traditional method of determining the moment when the water seepage detection chamber is full of water by observing the discharge of water from the exhaust hole located at the top of the water seepage detection chamber, the present invention has the advantages of accelerating the filling of water into the water seepage detection chamber and intuitively determining the moment when the water seepage detection chamber is full of water, thereby improving the reliability of the water seepage coefficient experiment.

[0014] The present invention designs an annular auxiliary component, which has an outer ring component and an inner ring component, and an annular space is formed between the inner ring component and the outer ring component. The inner ring component relies on three sets of centering screws to maintain a fixed relative position with the outer ring component. When in use, the annular auxiliary component can be placed at a predetermined position on the road surface of the highway bridge, and then glue (quick-setting sealing glass glue) is injected into the annular space. Compared with the traditional glue coating method, this method is simpler, more convenient, and has a better sealing effect. The outer side of the inner ring component is fixedly connected with a cross bar portion, and the bottom of the cover-shaped main body is fixedly connected with a snap-on component corresponding to the cross bar portion, which can realize the fixation of the detection base and the annular auxiliary component, thereby facilitating the installation of the detection base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a water seepage detection device for a highway bridge pavement proposed by the present invention; Figure 2 This is a front view of a water seepage detection device for a highway bridge pavement proposed by the present invention; Figure 3A side view of a water seepage detection device for a highway bridge pavement proposed by the present invention; Figure 4 for Figure 3 Section view of the section line at AA; Figure 5 for Figure 4 A partial enlarged view of point B in the middle; Figure 6 This is a stereoscopic diagram of a water seepage detection device for a highway bridge pavement proposed by the present invention with the measuring tube removed; Figure 7 A three-dimensional diagram of a detection base of a water seepage detection device for a highway bridge pavement proposed by the present invention; Figure 8 for Figure 7 A partial enlarged view of point C in the middle; Fig. 9 A three-dimensional diagram of a ring-shaped auxiliary component of a water seepage detection device for a highway bridge pavement proposed by the present invention; Fig.10 A stereoscopic diagram of a centering screw of a water seepage detection device for a highway bridge pavement proposed by the present invention.

[0016] Among them, 1. detection base; 1a. snap-fit ​​part; 101. cover-shaped main body; 102. connection port; 103. first flow channel; 2. annular auxiliary part; 201. outer ring part; 202. inner ring part; 202a. sealing contact part; 203. cross bar part; 204. annular space; 205. centering screw; 205a. rod body part; 205b. large head; 205c. external thread; 205d. hexagonal notch; 3. valve body; 4. adapter; 401. flange part; 402 , adapter cylinder; 403, second flow channel; 404, flange connection end; 405, threaded connection end; 5, measuring cylinder; 6, negative pressure pump; 7, support member; 701, support rod; 702, threaded rod; 8, annular cavity; 9, mounting port; 10, exhaust cylinder body; 11, metal air pipe; 12, pressure gauge; 13, inner plug; 14, long hole; 15, guide member; 16, outer plug; 17, floating member; 18, adapter; 19, ventilation hose; 20, annular mounting member. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1 like Figure 1-Figure 10As shown, an embodiment of the present invention provides a water seepage detection device for a highway bridge pavement, comprising a detection base 1, a water injection component, an exhaust cylinder 10, a buoyancy sealing structure, an air pressure measurement component and an exhaust component.

[0019] The bottom of the detection base 1 is buckled on the road bridge pavement to form a water seepage detection cavity. The bottom of the water seepage detection cavity corresponds to the road bridge pavement and is used to detect the water seepage coefficient of the road bridge pavement at that location. The top of the detection base 1 is connected to a water injection component for injecting liquid into the water seepage detection cavity. The water injection component can inject experimental water into the water seepage detection cavity. The water injection component is provided with a recording component for displaying the amount of injected liquid. The volume ΔV of the experimental water seepage is recorded by the recording component. The top of the detection base 1 is connected to an exhaust cylinder 10 connected to the water seepage detection cavity. The exhaust cylinder 10 is used to exhaust the air in the water seepage detection cavity when filling the water into the water seepage detection cavity to ensure that the water can quickly fill the water seepage detection cavity. The inner top of the detection base 1 is provided with a ring-shaped cylinder corresponding to the exhaust cylinder 10. Cavity 8, an installation opening 9 is provided on the top of the annular cavity 8, an inner plug 13 is fixedly installed in the installation opening 9, the inner plug 13 blocks the bottom port of the exhaust cylinder 10, a long hole 14 is provided on the side of the inner plug 13, the long hole 14 is the only channel connecting the exhaust cylinder 10 and the water seepage detection cavity, the outer side of the inner plug 13 is slidably connected with an outer plug 16, the outer side of the outer plug 16 is provided with a floating member 17, the floating member 17 is annular, the floating member 17, the outer plug 16 and the inner plug 13 are all located on the inner side of the annular cavity 8; in a natural state, the outer plug 16 slides to the bottom under the action of gravity, that is, the outer plug 16 cannot completely block the long hole 14 on the side of the inner plug 13, and at this time the inside of the exhaust cylinder 10 is connected with the water seepage detection cavity.

[0020] The air pressure measuring component is used to detect the air pressure of the gas inside the exhaust cylinder 10, and the exhaust component is used to extract the gas inside the exhaust cylinder 10. The present invention determines whether the water seepage detection cavity is full of water through the air pressure value measured by the air pressure measuring component.

[0021] When in use, first correctly install the detection base 1 so that the bottom of the detection base 1 is sealed and buckled on the road surface of the highway bridge to form a water seepage detection chamber. At this time, the inside of the water seepage detection chamber is air; after completing the above preparations, the vacuum component is powered on to extract the air inside the water seepage detection chamber to form a negative pressure state, and then the water injection component injects water into the water seepage detection chamber. The water quickly fills the water seepage detection chamber, and the floating part 17 moves upward under the action of the buoyancy of the water, so that the outer plug part 16 moves upward, and the outer plug part 16 completely blocks the long hole 14 on the side of the inner plug part 13. At this time, the vacuum component will quickly form a negative pressure inside the exhaust cylinder 10, and the air pressure measurement component detects and obtains negative pressure data. The user records the water injected into the water seepage detection chamber by the subsequent water injection component. After T time, the volume ΔV of the injected water is recorded, and then the formula is used. (Wherein, the unit of ΔV is ML, the unit of T is s, and the unit of Cw is ML / min) The water seepage coefficient is calculated to characterize the water seepage condition of the road surface.

[0022] In Example 1, the detection base 1 includes: a cover-shaped main body 101, a connection port 102 is fixedly provided at the top center position of the cover-shaped main body 101, a first flow channel 103 is provided in the middle of the connection port 102, the connection port 102 is used to connect with the water outlet of the water injection component, the exhaust cylinder 10 is installed on the top of the cover-shaped main body 101, the annular cavity 8 and the installation port 9 are also opened at the bottom of the cover-shaped main body 101, and the cover-shaped main body 101 can be buckled on the road surface of the highway bridge to form a water seepage detection cavity.

[0023] In the embodiment 1, it also includes: an annular auxiliary part 2, which is used to detect the installation of the base 1 and the road bridge pavement.

[0024] Specifically, the annular auxiliary member 2 includes: an outer ring member 201, an inner ring member 202, a centering screw 205 and a cross bar 203. The outer thread of the outer ring member 201 is installed with at least three sets of centering screws 205. The inner ring member 202 is located on the inner side of the outer ring member 201. An annular space 204 is formed between the inner ring member 202 and the outer ring member 201. The inner ring member 202 is kept in a fixed relative position with the outer ring member 201 by at least three sets of centering screws 205. One end of the centering screw 205 is against the outer side of the inner ring member 202 to ensure that the inner ring member 202 and the outer ring member 201 are fixed relative to each other. Concentrically, the height of the inner ring 202 is smaller than that of the outer ring 201, and the bottom ends of the inner ring 202 and the outer ring 201 are both against the road surface of the highway bridge, so the inner ring 202 will be shorter, and a sealing contact portion 202a extending toward the outside is provided on the top of the inner ring 202, and the bottom end of the cover-shaped main body 101 corresponds to the sealing contact portion 202a, and a cross bar portion 203 is fixedly connected to the outside of the inner ring 202, and the cross bar portion 203 is located above the centering screw 205, and a snap-fitting part 1a corresponding to the cross bar portion 203 is fixedly connected to the bottom of the cover-shaped main body 101.

[0025] When in use, the annular auxiliary part 2 is assembled, and then the annular auxiliary part 2 is placed at a predetermined position on the road bridge pavement, and quick-setting glass glue is injected into the annular space 204 between the inner ring part 202 and the outer ring part 201. The height of the quick-setting glass glue liquid can be higher than the height of the centering screw 205. After the quick-setting glass glue dries, the quick-setting glass glue will keep the inner ring part 202 and the ground, the outer ring part 201 and the ground sealed, and the centering screw 205 is placed horizontally in the quick-setting glass glue. At this time, the annular auxiliary part 2 is firmly sealed and fixed to the ground as a whole. Finally, the detection base 1 is buckled above the inner ring part 202, and the snap-fit ​​part 1a at the bottom of the cover-shaped main body 101 is buckled and fixed with the cross bar 203 to achieve rapid fixation of the detection base 1. At this time, the water seepage detection cavity refers to the space inside the detection base 1, the inner side of the inner ring part 202 and the road bridge pavement.

[0026] Preferably, in order to ensure the sealing of the connection between the inner ring 202 and the detection base 1, a sealing gasket may be provided above the sealing contact portion 202a.

[0027] In Example 1, the centering screw 205 includes: a rod body 205a, one end of the rod body 205a is a spherical head, the other end of the rod body 205a is fixedly connected with a large head 205, the outer side of the large head 205 is provided with an external thread 205c, and the end of the large head 205 away from the rod body 205a is provided with a hexagonal notch 205d. When the centering screw 205 is installed, the rod body 205a is located in the annular space 204 between the inner ring 202 and the outer ring 201, and the quick-setting glass glue is in contact with the rod body 205a, which will not affect the external thread 205c; preferably, the rod body 205a and the large head 205 are an integrated structure.

[0028] In Example 1, the water injection assembly includes: an adapter 4, a valve body 3 and a measuring tube 5.

[0029] The top of the cover-shaped body 101 is fixedly connected to a support member 7, the adapter 4 is located above the cover-shaped body 101, and the adapter 4 is fixedly installed with the support member 7, one end of the valve body 3 is threadedly installed with the connecting port 102, and the other end of the valve body 3 is threadedly installed with the bottom end of the adapter 4.

[0030] The recording element for displaying the amount of injected liquid is a measuring cylinder 5 , the bottom end of the measuring cylinder 5 is fixedly mounted on the top end of the adapter 4 , and the measuring cylinder 5 is communicated with the second flow channel 403 of the adapter 4 .

[0031] When in use, keep the valve body 3 in a closed state, add a certain amount of water into the measuring tube 5 (the volume of this part of water is slightly larger than the volume of the water seepage detection chamber), after the air extraction component works, open the valve body 3, and the water inside the measuring tube 5 enters the water seepage detection chamber through the adapter 4 and the valve body 3. When the air pressure measurement component measures a negative air pressure value, it is judged that the water seepage detection chamber is full of water, and then quickly close the valve body 3, and add a certain amount of water into the measuring tube 5 again, and record the water volume inside the measuring tube 5 as V 1， Then open the valve body 3, wait for a period of time T, and record the water volume inside the measuring tube 5 as V2 again. The volume of the experimental seepage water ΔV=V1-V2.

[0032] In the first embodiment, the adapter 4 includes: an adapter tube 402 and a flange portion 401 .

[0033] The outer side of the adapter tube 402 is fixedly connected with a flange portion 401, and the flange portion 401 is fixedly connected to the top of the support member 7. The interior of the adapter tube 402 has a second flow channel 403. The top of the adapter tube 402 is provided with a flange connection end 404, and the flange connection end 404 is flange-connected to the bottom end of the exhaust cylinder body 10. The bottom end of the adapter tube 402 is provided with a threaded connection end 405, and the threaded connection end 405 is threadedly installed with one end of the valve body 3.

[0034] In Example 1, the support member 7 includes: a support rod 701 and a threaded rod 702. The bottom end of the support rod 701 is fixedly connected to the top end of the cover-shaped main body 101. The top of the support rod 701 is fixedly connected to the threaded rod 702. A step with the end face facing upward is formed between the threaded rod 702 and the support rod 701. The threaded rod 702 passes through the flange portion 401, and a nut is threadedly installed on the threaded rod 702 and above the flange portion 401. The flange portion 401 is clamped and fixed by the nut and the step.

[0035] In Example 1, the air pressure measurement component includes: a barometer 12 and a metal air pipe 11. One end of the metal air pipe 11 is fixedly connected to the exhaust cylinder 10, and the other end of the metal air pipe 11 is fixedly connected to the detection port of the barometer 12. The barometer 12 is used to detect negative pressure.

[0036] In Example 1, the vacuum assembly includes: a negative pressure pump 6 and a ventilation hose 19, one end of the ventilation hose 19 is connected to the air inlet of the negative pressure pump 6, and the other end of the ventilation hose 19 is fixedly connected to an adapter 18, and the adapter 18 is threadedly installed on the top end of the exhaust cylinder body 10, and the negative pressure pump 6 can be installed on the flange portion 401 of the adapter 4.

[0037] In Example 1, a flange extending outward is provided at the top end of the inner plug 13, and the flange at the top end of the inner plug 13 is located inside the mounting port 9. An annular mounting member 20 is threadedly installed inside the mounting port 9 and below the flange at the top end of the inner plug 13. An external thread is provided on the outer side of the annular mounting member 20, and an internal thread is provided on the inner side of the mounting port 9.

[0038] In Example 1, a guide member 15 is threadedly installed on the bottom end of the inner plug 13, and the bottom end of the outer plug 16 is slidably connected to the guide member 15. The guide member 15 is used to ensure that the outer plug 16 and the inner plug 13 can slide more stably. The bottom end of the guide member 15 has an end head, which is used to limit the lowest position of the outer plug 16.

[0039] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A water seepage detection device for a road bridge pavement, comprising a detection base (1), the bottom of the detection base (1) being buckled on the road bridge pavement to form a water seepage detection cavity, characterized in that: The top of the detection base (1) is connected to a water injection assembly for injecting liquid into the water seepage detection cavity, and a recording element for displaying the amount of injected liquid is provided on the water injection assembly; The top of the detection base (1) is connected to an exhaust cylinder (10) which is in communication with the water seepage detection cavity; the inner top of the detection base (1) is provided with an annular cavity (8) corresponding to the exhaust cylinder (10); the top of the annular cavity (8) is provided with a mounting opening (9); an inner plugging member (13) is fixedly mounted in the mounting opening (9); a long hole (14) is provided on the side of the inner plugging member (13); an outer side of the inner plugging member (13) is slidably connected to an outer side of the inner plugging member (16); a floating member (17) is provided on the outer side of the outer plugging member (16); It also includes: a pressure measuring component for detecting the pressure of the gas inside the exhaust cylinder (10) and a gas extraction component for extracting the gas inside the exhaust cylinder (10); The air pressure value measured by the air pressure measuring component is used to determine whether the water seepage detection cavity is full of water.

2. A road bridge pavement water seepage detection device according to claim 1, characterized in that: The detection base (1) comprises: A cover-shaped main body (101), wherein a connection port (102) is fixedly provided at the center position of the top of the cover-shaped main body (101), and a first flow channel (103) is provided in the middle of the connection port (102).

3. A road bridge pavement water seepage detection device according to claim 2, characterized in that: Also includes: An annular auxiliary member (2), the annular auxiliary member (2) comprising: An outer ring member (201), wherein at least three sets of centering screws (205) are installed on the outer threads of the outer ring member (201); An inner ring member (202), the inner ring member (202) being located on the inner side of the outer ring member (201), an annular space (204) being formed between the inner ring member (202) and the outer ring member (201), the inner ring member (202) being kept in a fixed relative position with the outer ring member (201) by means of at least three sets of centering screws (205), the height of the inner ring member (202) being smaller than the height of the outer ring member (201), the top of the inner ring member (202) being provided with a sealing contact portion (202a) extending outward, and the bottom end of the cover-shaped body (101) corresponding to the sealing contact portion (202a).

4. A road bridge pavement water seepage detection device according to claim 3, characterized in that: The annular auxiliary component (2) comprises: A crossbar portion (203) is fixedly connected to the outer side of the inner ring member (202), the crossbar portion (203) is located above the centering screw (205), and a snap-fitting member (1a) corresponding to the crossbar portion (203) is fixedly connected to the bottom of the cover-shaped main body (101).

5. A road bridge pavement water seepage detection device according to claim 4, characterized in that: The annular auxiliary component (2) comprises: The centering screw (205) comprises a rod body (205a), one end of the rod body (205a) being a spherical head, the other end of the rod body (205a) being fixedly connected to a large head (205), an outer side of the large head (205) being provided with an external thread (205c), and an end of the large head (205) away from the rod body (205a) being provided with a hexagonal notch (205d).

6. A road bridge pavement water seepage detection device according to claim 2, characterized in that: The water injection assembly comprises: The adapter (4) is fixedly connected to the top of the cover-shaped main body (101) with a support member (7), the adapter (4) is located above the cover-shaped main body (101), and the adapter (4) and the support member (7) are fixedly installed.

7. A road bridge pavement water seepage detection device according to claim 6, characterized in that: The water injection assembly comprises: A valve body (3), one end of the valve body (3) being threadedly mounted on the connection port (102), and the other end of the valve body (3) being threadedly mounted on the bottom end of the adapter (4); The recording element for displaying the amount of injected liquid is a measuring cylinder (5), the bottom end of the measuring cylinder (5) is fixedly mounted on the top end of the adapter (4), and the measuring cylinder (5) is in communication with the second flow channel (403) of the adapter (4).

8. The water seepage detection device for a highway bridge pavement according to claim 4, characterized in that: The adapter (4) comprises: An adapter tube (402), wherein the outer side of the adapter tube (402) is fixedly connected to a flange portion (401), and the flange portion (401) is fixedly connected to the top end of the support member (7); The adapter tube (402) has a second flow channel (403) inside, the top end of the adapter tube (402) is provided with a flange connection end (404), and the bottom end of the adapter tube (402) is provided with a threaded connection end (405).

9. A road bridge pavement water seepage detection device according to claim 8, characterized in that: The support member (7) comprises a support rod (701), the bottom end of the support rod (701) being fixedly connected to the top end of the cover-shaped main body (101), the top of the support rod (701) being fixedly connected to a threaded rod (702), a step with an end face facing upwards being formed between the threaded rod (702) and the support rod (701), the threaded rod (702) passing through the flange portion (401), and a nut being threadedly mounted on the threaded rod (702) and located above the flange portion (401).

10. The water seepage detection device for a highway bridge pavement according to claim 1, characterized in that: The air pressure measurement assembly comprises: a barometer (12) and a metal air pipe (11); one end of the metal air pipe (11) is fixedly connected to the exhaust cylinder (10); and the other end of the metal air pipe (11) is fixedly connected to a detection port of the barometer (12).

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