阅读说明：本技术 装配式接头压力防水测试试验系统 (Pressure waterproof test system for assembly type connector ) 是由 吴居洋 张子航 赵维刚 张骞 张中安 于德涌 王冉 丁先立 项宝 昝子卉 欧飞奇 于 2021-06-23 设计创作，主要内容包括：本发明提供了一种装配式接头压力防水测试试验系统,包括装配式接头模拟结构、湿度传感器、应变传感器、位移传感器、密封侧围、支座、上部顶撑装置、下部顶撑装置和供水装置；装配式接头模拟结构具有两个相互拼接的接头试件；湿度传感器贴近止水密封条设置；应变传感器设于接头试件内,且靠近接头试件的拼接面设置；位移传感器设于接头试件的底面；密封侧围密封围设于拼缝的两侧和下部,密封侧围底面形成有进水口,侧面形成有出气口；供水装置连通于进水口。本发明提供的装配式接头压力防水测试试验系统能进行准确的对接模拟,可以对静力抗弯能力、密闭稳定性和防水性能进行合理评估,为装配式地下建筑的整体力学分析奠定基础。(The invention provides an assembly type joint pressure waterproof test system which comprises an assembly type joint simulation structure, a humidity sensor, a strain sensor, a displacement sensor, a sealing side wall, a support, an upper jacking device, a lower jacking device and a water supply device, wherein the upper jacking device is arranged on the upper portion of the assembly type joint simulation structure; the assembly type joint simulation structure is provided with two joint test pieces which are spliced with each other; the humidity sensor is arranged close to the water stop sealing strip; the strain sensor is arranged in the joint test piece and close to the splicing surface of the joint test piece; the displacement sensor is arranged on the bottom surface of the joint test piece; the sealing side walls are arranged on the two sides and the lower part of the abutted seam in a sealing way, a water inlet is formed on the bottom surface of the sealing side wall, and an air outlet is formed on the side surface of the sealing side wall; the water supply device is communicated with the water inlet. The assembly type joint pressure waterproof test system provided by the invention can be used for carrying out accurate butt joint simulation, can be used for reasonably evaluating the static force bending resistance, the sealing stability and the waterproof performance, and lays a foundation for the overall mechanics analysis of an assembly type underground building.)

1. The utility model provides a waterproof test system of assembled joint pressure which characterized in that includes:

the assembly type joint simulation structure is provided with two joint test pieces which are spliced with each other, a plurality of water-stopping sealing strips are clamped in a splicing seam formed by splicing the two joint test pieces, and the plurality of water-stopping sealing strips are respectively positioned at the upper part and the lower part of the splicing seam;

the humidity sensors are all positioned on the splicing surfaces of the joint test pieces and are respectively arranged close to the water stop sealing strips;

the strain sensors are respectively arranged in the two joint test pieces and are arranged close to the splicing surfaces of the joint test pieces;

the displacement sensors are respectively arranged on the bottom surfaces of the two joint test pieces;

the sealing side wall is arranged on the two sides and the lower part of the abutted seam in a sealing way, a water inlet communicated with the abutted seam is formed in the bottom surface of the sealing side wall, and a gas outlet communicated with the abutted seam is formed in the side surface of the sealing side wall;

the water supply device is communicated with the water inlet;

the supports are respectively supported at the bottoms of the two joint test pieces;

the upper jacking device is used for applying a pressing action force from the top surfaces of the two joint test pieces; and

and the lower jacking device is used for applying an applying pressure acting force from the bottom surfaces of the two joint test pieces.

2. The assembly type joint pressure waterproof test testing system according to claim 1, wherein the splicing surfaces of the two joint test pieces are mutually corresponding stepped surfaces, and a humidity sensor is also arranged at the rotating surface of each stepped surface.

3. The fabricated joint pressure water resistance test testing system of claim 1, wherein the water supply device comprises:

a water tank;

the booster pump is arranged at a water outlet of the water tank and is integrated with a water pressure gauge; and

the sealing cap of intaking, the sealing cap of intaking has two splicing pieces that are the semicircle form, two form the tubular structure that the axis is on a parallel with upper and lower direction after the splicing piece docks, two splicing piece's concatenation face is just right the piece, and be on a parallel with connect the concatenation face of test piece, tubular structure's top opening dock in the water inlet, wherein at least one splicing piece lead to the pipe with the booster pump is connected.

4. The fabricated joint pressure water-proofing test system of claim 3, wherein the lower jacking device is located below the abutted seam, and a force changer is arranged between the telescopic end of the lower jacking device and the water inlet sealing cap;

the stress changer is provided with an upper matching part and a lower matching part, the lower matching part is covered on the telescopic end of the lower jacking device, and the top surface of the lower jacking device is a spherical surface; go up cooperation portion shore in two the below of concatenation piece, go up the cooperation portion and be formed with downward open-ended cooperation groove, the cooperation groove be with the sphere groove of cooperation portion adaptation down.

5. The fabricated joint pressure water-proof test system of claim 3, wherein a stable platform is arranged on the top of the water tank, a humidity meter connected to the humidity sensor, and a displacement meter connected to the displacement sensor are arranged on the stable platform.

6. The fabricated joint pressure water resistance test testing system of claim 1, wherein the upper shoring means comprises:

a top reaction frame;

the top telescopic piece is arranged on the top reaction frame;

the two distribution supports are respectively arranged on the top surfaces of the two joint test pieces; and

and the distribution beam is arranged between the two distribution supports and the telescopic end of the top telescopic piece and is used for distributing the downward pressure of the top telescopic piece to the two distribution supports.

7. The fabricated joint pressure water proof test testing system of claim 6, wherein the top reaction frame has a downwardly extending connecting rod, the upper jacking device further comprises an adjustment base connected to the connecting rod and configured to control the raising and lowering of the connecting rod, the adjustment base integrated with a pressure gauge.

8. The fabricated joint pressure water resistance test testing system of claim 1, wherein an air outlet valve is provided at the air outlet.

9. The fabricated joint pressure water resistance test system according to claim 1 or 8, wherein the air outlet is located close to a position of the water-stop seal strip located lowermost.

10. The pressure waterproof test system of an assembled joint according to claim 1, wherein each of the upper and lower sides of the water-stop seal strip is provided with a plurality of the humidity sensors distributed along the axial direction of the water-stop seal strip.

Technical Field

The invention belongs to the technical field of building simulation test equipment, and particularly relates to an assembly type joint pressure waterproof test system.

Background

The assembly type building is a building which is formed by transferring a large amount of field operation work in the traditional building mode to a factory, processing and manufacturing building components and accessories in the factory, transporting the building components and accessories to a building construction site, and assembling and installing the components and accessories on the site in a reliable connection mode.

The assembled underground structure is an important branch of an assembled building, is widely applied to occasions such as subway stations and the like, and has important influence on underground engineering construction due to structural stability and waterproof performance. However, at present, reliable simulation analysis cannot be performed for structural stability and waterproof performance of the joint structure, so that technical development of the fabricated underground structure is limited.

Disclosure of Invention

The embodiment of the invention provides a pressure waterproof test system for an assembled joint, and aims to provide equipment for reliably simulating and analyzing the structural stability and the waterproof performance of the assembled joint.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a waterproof test system of assembled joint pressure, includes:

the assembly type joint simulation structure is provided with two joint test pieces which are spliced with each other, a plurality of water-stopping sealing strips are clamped in a splicing seam formed by splicing the two joint test pieces, and the plurality of water-stopping sealing strips are respectively positioned at the upper part and the lower part of the splicing seam;

the humidity sensors are all positioned on the splicing surfaces of the joint test pieces and are respectively arranged close to the water stop sealing strips;

the strain sensors are respectively arranged in the two joint test pieces and are arranged close to the splicing surfaces of the joint test pieces;

the displacement sensors are respectively arranged on the bottom surfaces of the two joint test pieces;

the sealing side wall is arranged on the two sides and the lower part of the abutted seam in a sealing way, a water inlet communicated with the abutted seam is formed in the bottom surface of the sealing side wall, and a gas outlet communicated with the abutted seam is formed in the side surface of the sealing side wall;

the water supply device is communicated with the water inlet;

the supports are respectively supported at the bottoms of the two joint test pieces;

the upper jacking device is used for applying a pressing action force from the top surfaces of the two joint test pieces; and

and the lower jacking device is used for applying an applying pressure acting force from the bottom surfaces of the two joint test pieces.

In a possible implementation mode, the splicing surfaces of the two joint test pieces are step surfaces corresponding to each other, and a humidity sensor is also arranged at the rotating surface of each step surface.

In one possible implementation, the water supply device includes:

a water tank;

the booster pump is arranged at a water outlet of the water tank and is integrated with a water pressure gauge; and

the sealing cap of intaking, the sealing cap of intaking has two splicing pieces that are the semicircle form, two form the tubular structure that the axis is on a parallel with upper and lower direction after the splicing piece docks, two splicing piece's concatenation face is just right the piece, and be on a parallel with connect the concatenation face of test piece, tubular structure's top opening dock in the water inlet, wherein at least one splicing piece lead to the pipe with the booster pump is connected.

In a possible implementation manner, the lower top bracing device is positioned below the abutted seam, and a stress changer is arranged between the telescopic end of the lower top bracing device and the water inlet sealing cap;

the stress changer is provided with an upper matching part and a lower matching part, the lower matching part is covered on the telescopic end of the lower jacking device, and the top surface of the lower jacking device is a spherical surface; go up cooperation portion shore in two the below of concatenation piece, go up the cooperation portion and be formed with downward open-ended cooperation groove, the cooperation groove be with the sphere groove of cooperation portion adaptation down.

In a possible implementation manner, the top of the water tank is provided with a stable platform, connected to the humidity meter of the humidity sensor, and connected to the displacement meter of the displacement sensor which is arranged on the stable platform.

In one possible implementation, the upper jacking device includes:

a top reaction frame;

the top telescopic piece is arranged on the top reaction frame;

the two distribution supports are respectively arranged on the top surfaces of the two joint test pieces; and

and the distribution beam is arranged between the two distribution supports and the telescopic end of the top telescopic piece and is used for distributing the downward pressure of the top telescopic piece to the two distribution supports.

In a possible implementation, the top reaction frame has a connecting rod extending downward, the upper jacking device further comprises an adjusting base connected to the connecting rod and used for controlling the lifting of the connecting rod, and the adjusting base is integrated with a pressure gauge.

In a possible implementation manner, an air outlet valve is arranged at the air outlet.

In one possible implementation, the air outlet is located close to the position of the water stop sealing strip located at the lowest position.

In a possible implementation manner, each of the upper side and the lower side of the water stop sealing strip is respectively provided with a plurality of humidity sensors distributed along the axial direction of the water stop sealing strip.

In the embodiment of the application, water is injected into the abutted seams through the water supply device, and the sealing stability of the abutted seams can be analyzed by monitoring the change of water pressure; the humidity near the water-stop sealing strip and the change of the water content are monitored by a humidity sensor, so that the waterproof performance of the sealing strip can be analyzed; applying load on the fabricated joint simulation structure through the upper jacking device and the lower jacking device, determining the surface stress state of a joint test piece by matching with a strain sensor, and monitoring the rule of tension deformation of the joint test piece in a pressure test through a displacement sensor so as to analyze the static force bending resistance of the fabricated joint simulation structure; moreover, the splice face of the joint test piece in this application and the position that sets up of stagnant water sealing strip can set up according to real joint design, and then can carry out the simulation of most accurate. The assembled joint pressure waterproof test system can carry out accurate butt joint simulation, can also carry out reasonable aassessment to static bending resistance, airtight stability and waterproof performance of assembled joint analog structure simultaneously, lays a good foundation for the integral mechanics analysis of assembled underground construction.

Drawings

Fig. 1 is a schematic structural diagram of a front view of a pressure waterproof test testing system for an assembled joint according to an embodiment of the present invention;

FIG. 2 is a schematic side view of a pressure water-proof test system for a fabricated joint according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a first testing system for testing pressure and water resistance of an assembled joint according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a second testing system for testing pressure and water resistance of an assembled joint according to an embodiment of the present invention;

fig. 5 is a schematic three-dimensional structure diagram of a pressure waterproof test testing system for an assembly type joint according to an embodiment of the present invention;

FIG. 6 is a front view of an assembled joint simulation structure and an assembled structure of a displacement sensor employed in an embodiment of the present invention;

FIG. 7 is a right side view of FIG. 6;

FIG. 8 is a perspective view showing an assembly structure of one of the joint test pieces with the water-stop seal and the humidity sensor in FIG. 6;

FIG. 9 is a perspective view showing an assembled structure of a lower supporting unit, a force changer and a water inlet sealing cap according to an embodiment of the present invention;

FIG. 10 is a perspective view showing an assembled structure of a lower supporting means, a force changer and a water inlet cap, in which a first gasket is not assembled, according to an embodiment of the present invention;

fig. 11 is a sectional view showing the internal structure of the lower supporting means, the force changer and the water inlet cap, to which the first gasket is not attached, according to the embodiment of the present invention.

Description of reference numerals:

1. an assembled joint simulation structure; 101. a joint test piece; 102. sealing water sealing strips;

2. a humidity sensor;

3. a strain sensor;

4. a displacement sensor;

5. sealing the side wall;

6. a support;

7. an upper jacking device; 701. a top reaction frame; 7011. a connecting rod; 702. a top telescoping member; 703. a distribution support; 704. a distribution beam; 705. an adjusting base;

8. a lower jacking device;

9. a water supply device; 901. a water tank; 902. a booster pump; 903. sealing a cap by water inflow; 9031. splicing sheets; 9032. a butt plate; 9033. a seal ring; 9034. a first liner; 9035. a connecting bolt; 904. a water pipe;

10. a force changer; 1001. an upper mating portion; 1002. a lower mating portion; 1003. a mating groove;

11. a stable platform;

12. a humidity meter;

13. a displacement meter;

14. an air outlet valve;

15. a second liner.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 8, a pressure waterproof test system for an assembled joint according to the present invention will now be described. The assembly type joint pressure waterproof test system comprises an assembly type joint simulation structure 1, a humidity sensor 2, a strain sensor 3, a displacement sensor 4, a sealing side wall 5, a support 6, an upper top bracing device 7, a lower top bracing device 8 and a water supply device 9; the assembly type joint simulation structure 1 is provided with two joint test pieces 101 which are spliced with each other, a plurality of water-stop sealing strips 102 are clamped in a splicing seam formed by splicing the two joint test pieces 101, and the plurality of water-stop sealing strips 102 are respectively positioned at the upper part and the lower part of the splicing seam; a plurality of humidity sensors 2 are arranged, and the plurality of humidity sensors 2 are all positioned on the splicing surface of the joint test piece 101 and are respectively arranged close to the plurality of water stop sealing strips 102; the strain sensors 3 are arranged in a plurality, the strain sensors 3 are respectively arranged in the two joint test pieces 101 and are all arranged close to the splicing surfaces of the joint test pieces 101; a plurality of displacement sensors 4 are arranged, and the plurality of displacement sensors 4 are respectively arranged on the bottom surfaces of the two joint test pieces 101; the sealed side walls 5 are arranged on the two sides and the lower part of the abutted seams in a sealed surrounding mode, a water inlet communicated with the abutted seams is formed in the bottom surfaces of the sealed side walls 5, and a gas outlet communicated with the abutted seams is formed in the side surfaces of the sealed side walls 5; the water supply device 9 is communicated with the water inlet; the supports 6 are respectively supported at the bottoms of the two joint test pieces 101; the upper jacking device 7 is used for applying a pressing action force from the top surfaces of the two joint test pieces 101; the lower jacking device 8 is used to apply a pressing force from the bottom surfaces of the two joint samples 101.

Compared with the prior art, the assembly type joint pressure waterproof test system provided by the embodiment has the advantages that water is injected into the abutted seams through the water supply device 9, and the sealing stability of the assembly type joint pressure waterproof test system can be analyzed by monitoring the change of water pressure; the humidity and the change of the moisture content near the water-stop sealing strip 102 are monitored by the humidity sensor 2, so that the waterproof performance of the sealing strip can be analyzed; applying a load on the fabricated joint simulation structure 1 through the upper supporting device 7 and the lower supporting device 8, determining the surface stress state of the joint test piece 101 by matching with the strain sensor 3, and monitoring the rule of the tensile deformation of the pressure test on the joint test piece 101 through the displacement sensor 4, so that the static force bending resistance of the fabricated joint simulation structure 1 can be analyzed; moreover, the splice face of joint test piece 101 in this application and the position that sets up of stagnant water sealing strip can set up according to real joint design, and then can carry out the simulation of most accurate. The assembled joint pressure waterproof test system can carry out accurate butt joint simulation, can also carry out reasonable aassessment to static bending resistance, airtight stability and waterproof performance of assembled joint analog structure 1 simultaneously to the stability problem that the station connects under the condition of intaking and loading is connected in the research assembled joint, establishes the basis for the holistic analysis of assembled underground construction.

In addition, through setting up sealed side wall 5, can also effectively avoid experimental normal water to flow out from the piece seam side.

Specifically, the strain sensor 3 is pre-planted when two joint test pieces 101 are poured.

In some embodiments, the seal side wall 5 is made of carbon fiber cloth, and is adhered to the two joint test pieces 101 respectively in an adhesion manner.

In some embodiments, referring to fig. 6 and 7, a plurality of strain sensors 3 are provided in each joint specimen 101, and the plurality of strain sensors 3 in each joint specimen are distributed in a row in the up-down direction.

In some embodiments, referring to fig. 1 to 8, the joint surfaces of the two joint test pieces 101 are stepped surfaces corresponding to each other, and a humidity sensor 2 is also disposed at a rotation surface of the stepped surfaces. The ladder face is corresponding to some special concatenation forms, through setting up humidity transducer 2 in the face department that turns, has increased the sensing scope of humidity and moisture content, improves sensing accuracy.

In some embodiments, referring to fig. 1 to 5, 9 to 11, the water supply device 9 includes a water tank 901, a booster pump 902, and a water inlet cap 903; the booster pump 902 is arranged at the water outlet of the water tank 901, and the booster pump 902 is integrated with a water pressure gauge; the water inlet sealing cap 903 is provided with two semicircular arc-shaped splicing pieces 9031, the two splicing pieces 9031 are in butt joint to form a cylindrical structure with an axis parallel to the vertical direction, the splicing surfaces of the two splicing pieces 9031 are opposite to the splicing seam and parallel to the splicing surface of the joint test piece 101, the top end opening of the cylindrical structure is in butt joint with a water inlet in the seal side wall 5, and at least one splicing piece 9031 is connected with the booster pump 902 through a water pipe 904.

In this embodiment, the water inlet sealing cap member 903 is formed by combining two identical splicing pieces 9031, and when the water inlet sealing cap member is connected with an upper object, the two splicing pieces 9031 are arranged on two sides of a splicing seam of the joint test piece 101, so that the two splicing pieces 9031 can move up and down to some extent along with the deformation of the joint test piece 101, and the deformation of the two joint test pieces 101 cannot be restrained.

In some embodiments, referring to fig. 9 to 11, the water inlet sealing cap 903 further includes a butt plate 9032 and a first sealing ring 9033, the butt plate 9032 is in a sector shape and is respectively disposed at the top ends of the two splicing pieces 9031, and when the two splicing pieces 9031 are butted, the two butt plates 9032 are also spliced to form a circular ring; each butt joint plate 9032 is provided with an arc-shaped groove, after the two butt joint plates 9032 are spliced, the corresponding arc-shaped grooves are also butted to form an annular groove, a sealing ring 9033 is arranged in the annular groove, the sealing ring 9033 can be attached to the bottom surface of the sealing side wall 5, and the butt joint tightness between the water inlet sealing cap 903 and the sealing side wall 5 is improved.

Optionally, to further enhance the sealing performance, a plurality of sealing rings 9033 may be concentrically disposed.

In some embodiments, referring to fig. 9 to 11, two abutting plates 9032 are respectively provided with a mounting hole, so that the two abutting plates 9032 are respectively connected to the sealed side wall 5 through a connecting bolt 9035.

In some embodiments, referring to fig. 4 and 9, the outer circumference of the ring formed by the two butt-plates 9032 is further sleeved with a first gasket 9034. The first gasket 9034 is a rubber member, and not only can the sealing performance of the water inlet sealing cap 903 be enhanced, but also deformation of the joint test piece 101 is prevented from being affected due to the flexible material of the first gasket.

In some embodiments, referring to fig. 1 to 5 and 9 to 11, the lower supporting device 8 is located below the splice, and a force changer 10 is disposed between the telescopic end of the lower supporting device 8 and the water inlet sealing cap 903. The force changer 10 is provided with an upper matching part 1001 and a lower matching part 1002, the lower matching part 1002 is covered on the telescopic end of the lower jacking device 8, and the top surface is a spherical surface; the upper fitting part 1001 is supported below the two splicing pieces 9031, a fitting groove 1003 which is open downwards is formed in the upper fitting part 1001, and the fitting groove 1003 is a spherical groove which is matched with the lower fitting part 1002. The force changer 10 in this embodiment has a spherical surface, which can prevent the lower propping device 8 from being affected by uneven force inclination of the joint test piece 101 or uneven ground, and the force changer 10 can keep the forces of the lower propping device 8, the joint test piece 101 and the water inlet sealing cap member 903 consistent all the time.

In some embodiments, referring to fig. 1-5 and 9-11, the lower jacking device 8 comprises a bottom telescoping member, which may be a jack, and a bottom reaction frame at a bottom end of the bottom telescoping member. The lower jacking device 8 of the embodiment is simple in structure and can provide effective bottom load.

In some embodiments, referring to fig. 2 and 5, a stabilizing platform 11 is disposed on the top of the water tank 901, a humidity meter 12 connected to the humidity sensor 2, and a displacement meter 13 connected to the displacement sensor 3 are disposed on the stabilizing platform 11. The stable platform 11 makes full use of the space on the upper part of the water tank 901, integrates each display instrument above the water tank 901, is convenient to install, occupies small space and is convenient for centralized observation.

The displacement meter 13 in this embodiment is connected to the displacement sensor 3 through a data transmission line, and the humidity meter 12 is connected to the humidity sensor 2 through a data transmission line.

In some embodiments, referring to fig. 1-5, the upper jacking device 7 comprises a top reaction frame 701, a top telescoping member 702, a distribution cradle 703, and a distribution beam 704; the top telescoping piece 702 is arranged on the top reaction frame 701; two distribution supports 703 are arranged and are respectively arranged on the top surfaces of the two joint test pieces 101; distribution beams 704 are provided between the two distribution legs 703 and the telescoping end of top telescoping member 702 for distributing the downward pressure of top telescoping member 702 to the two distribution legs 703.

The telescopic end of the top telescopic part 702 corresponds to the gravity center of the distribution beam 704, the two distribution supports 703 are respectively arranged on the left and right symmetrical sides below the distribution beam 704, the distribution supports 703 are arranged on the left and right symmetrical sides above the fabricated joint simulation structure 1 (namely, the two distribution supports 703 are respectively arranged above the two joint test pieces 101), and in the process that the top telescopic part 702 is pressed down, the pressure of the top telescopic part 702 is distributed to the two distribution supports 703 through the distribution beam 704 and then distributed to different joint test pieces 101. This embodiment simple structure is favorable to the distribution condition of nimble adjustment upper portion pressure on two joint test blocks 101, and then comes from the load that assembled connects the top in the simulated environment that can be more accurate, improves experimental accuracy.

Specifically, top telescoping member 702 is a jack.

In some embodiments, referring to fig. 1 to 5, the top reaction frame 701 has a connecting rod 7011 extending downward, the upper supporting device 7 further includes an adjusting base 705, the adjusting base 705 is connected to the connecting rod 7011 and is used for controlling the lifting of the connecting rod 7011, and the adjusting base 705 is integrated with a pressure gauge. The manometer can show and push down the load, and then makes things convenient for the experimenter to adjust the size of external load. In addition, the top reaction frame 701 can drive the top telescopic piece 702 to integrally lift, and the joint test piece 101 is convenient to assemble and disassemble.

Optionally, the adjusting base 705 has a rotary lifting shaft, and the lower end of the connecting rod 7011 is connected to the rotary lifting shaft, so that the connecting rod 7011 can be driven to lift by the action of the rotary lifting shaft.

Of course, the lifting of the connecting rod 7011 can also be controlled in a hydraulic lifting manner, so that the lifting control requirements can be met, which is not listed here.

Optionally, when the water tank 901 is provided with the stable platform 11, the adjusting base 705 is also provided on the stable platform 11, so that the integration level of the device is improved, and the occupied space is reduced.

In some embodiments, referring to fig. 1-4, an outlet valve 14 is provided at the outlet. Wherein, air outlet valve 14 has the air flue that can control the switching, makes the air in the piece can follow air outlet valve 14 and discharges, guarantees that piece internal pressure is stable.

In some embodiments, referring to fig. 1 to 4, a second gasket 15 is further disposed between the air outlet valve 14 and the sealing side wall 5, and the second gasket 15 is a rubber member.

In some embodiments, the location of the exhaust air outlet is close to the location of the lowermost water sealing strip 102 for convenience.

On the basis of the above embodiment, the position of the air outlet is lower than the position of the water stop seal 102 located at the lowermost position.

In some embodiments, referring to fig. 7 and 8, in order to more accurately sense the humidity and moisture content variation at the sealing-up strip 102, a plurality of humidity sensors 2 are respectively disposed on the upper side and the lower side of each sealing-up strip 102, and are distributed along the axial direction of the sealing-up strip 102.

For example, referring to fig. 7 and 8, two water-stop seal strips 102 are respectively located at the upper part and the lower part of the joint test piece 101 and are parallel to each other, and the upper side and the lower side of each water-stop seal strip 102 are respectively provided with three humidity sensors 2 axially distributed along the water-stop seal strip 102.

Of course, the arrangement of the water-stop sealing strip 102 and the humidity sensor 2 may be changed according to different splicing forms of the joint test piece 101, and is not limited to the above specific embodiment, and the test requirements can be met, which is not listed here.

On the basis of the above embodiment, in order to ensure the waterproof performance of the side portion and reduce the material consumption at the same time, the sealing fence 5 bypasses the bottom of the patchwork from a first position (not lower than the position of one end of the uppermost water-stop seal strip 102) on one side of the patchwork between the two joint test pieces 101 to a second position (not lower than the position of the other end of the uppermost water-stop seal strip 102) covering the other side of the patchwork.

It should be noted that when the fabricated joint pressure waterproof test system is used for static test, the test piece needs to be loaded in a grading manner according to the limit bearing capacity of the beam calculated by the finite element, the special connection mode is considered, and the grading grade difference is loaded according to 5% of the maximum load. More details are carried out with reference to the standard TBT2092-2018 'static bending test of prestressed concrete beam by simple beam test method'.

In addition, the assembled joint pressure waterproof test system is characterized in that the assembled joint simulation structure 1 after splicing is preset to have the overall length of 4m, the width of 0.5m and the height of 1m, the outer diameter of a main body (formed by splicing pieces 9031) of the water inlet sealing cap 903 is 100mm, the thickness of 10mm and the height of 150mm, the outer diameter of a cap peak (formed by a butt plate 9032) of the water inlet sealing cap 903 is 200mm, and the center of the water inlet sealing cap 903 is aligned with the splicing seams to ensure that a joint test piece 101 and the water inlet sealing cap 903 are in full contact with water. The water pressure gauge in the booster pump 902 detects the water pressure in the water tank 901, the initial water pressure is 0.5MPa, the initial water pressure is sequentially applied to 0.6MPa, 0.7MPa, 0.8MPa, 0.9MPa and 1.0MPa, the pressure of each stage is stabilized for 2 hours, and the water pressure is stabilized after the water pressure gauge reaches the designed water pressure.

The water pipe 904 is also provided with a flow meter, and if the flow meter rises suddenly, the corresponding water pressure is recorded, and the upper-level water pressure is taken as the maximum water pressure resistance. If the pressure of 1.0MPa is used for achieving the test purpose, the pressurization is continued until the test is finished.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.