CN109724788B - Wind pressure test bed of tunnel protection door and wind pressure test device comprising same - Google Patents
Wind pressure test bed of tunnel protection door and wind pressure test device comprising same Download PDFInfo
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- CN109724788B CN109724788B CN201910041281.8A CN201910041281A CN109724788B CN 109724788 B CN109724788 B CN 109724788B CN 201910041281 A CN201910041281 A CN 201910041281A CN 109724788 B CN109724788 B CN 109724788B
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- 238000012360 testing method Methods 0.000 title claims abstract description 171
- 230000001681 protective effect Effects 0.000 claims abstract description 79
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- 238000007789 sealing Methods 0.000 claims description 8
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Abstract
The invention discloses a wind pressure test bed of a tunnel protective door and a wind pressure test device comprising the same, and belongs to the technical field of tunnel protective door detection. The wind pressure test bed and the wind pressure test device comprising the same have the advantages of simple structure, simple and convenient control, strong selectivity of the test scheme, high accuracy of the test result, providing basis for structural design and matching installation of the tunnel protection door, improving the safety and reliability of application of the tunnel protection door, reducing the application cost of the tunnel protection door and having excellent application and popularization values.
Description
Technical Field
The invention belongs to the technical field of tunnel protection door detection, and particularly relates to a wind pressure test bed of a tunnel protection door and a wind pressure test device comprising the same.
Background
In recent years, the railway construction in China is developed at a high speed, and the time distance between each two areas is continuously shortened. Along with the increase of the railway running speed, the requirement on the construction standard of the infrastructure is also increased, and the railway tunnel is taken as an important component of the railway infrastructure and plays an important role in the process of crossing the natural elevation obstacle or the plane obstacle by the railway line.
The arrangement forms of the tunnel are different according to different application environments and requirements of railway tunnels, such as single-hole single-line tunnels, double-hole single-line tunnels, single-hole double-line tunnels and the like. In a railway tunnel, when a train runs through, the train can generate a piston effect of larger lateral wind pressure in the tunnel due to the fact that the cross section area of the train is larger than the cross section area of the tunnel, the length of the tunnel is longer, and the running speed of the train is higher. In railway tunnels, a cavity for placing equipment, a transverse channel (communicated double-hole tunnel), an emergency evacuation channel and the like are usually arranged, and tunnel protection doors are often arranged on the channels or the cavities so as to play roles of preventing fire and explosion, preventing equipment damage, guaranteeing personnel safety and the like. In the application process of the tunnel protection door, the tunnel protection door is required to bear the effect of resisting periodical piston wind generated in the train operation process, especially the tunnel protection door arranged on the double-hole tunnel corresponding to the connecting channel is required to bear the positive and negative wind pressure effect from two sides of the protection door, the application environment is more severe, once the tunnel protection door fails or is destroyed due to the piston wind effect, the operation safety of the railway tunnel is required to be adversely affected, the service life of related equipment in the tunnel is shortened, and unnecessary loss is caused.
According to the research content of the national natural science foundation project (51008310) of the university of south China in 2011, the research on the gas-solid coupling vibration mechanism and wind-induced fatigue test of the contact net system in the high-speed railway tunnel and the research on the technical standards related to the aerodynamic effect of the high-speed railway on the tunnel auxiliary facilities of the development project of the railway company, the pressure change and the wind speed distribution of the train in the tunnel can be demonstrated through numerical calculation when the train runs in the tunnel. The research result shows that for a single-hole double-line tunnel of 350km/h, the positive and negative piston wind pressure in the tunnel can be changed between +10kPa and-10 kPa.
In the prior art, in order to fully ensure the safe operation of a railway tunnel and the service life of a tunnel protection door, the fixed form and the structural performance of the tunnel protection door are required to be optimally designed, and the structural performance test is performed on the tunnel protection door after the optimization design, so that the structural performance of the tunnel protection door can be ensured to fully meet the application in a tunnel. In the structural performance test of the tunnel protection door, the wind pressure test is an important test to be carried out on the tunnel protection door, and the test result can often reflect the application state and the service life period of the tunnel protection door under the action of the piston wind, so that the wind pressure test has excellent guiding significance on the structure and the arrangement design of the tunnel protection door; at present, the wind pressure test of the tunnel protection door basically only depends on field test, so that not only is a certain potential safety hazard present, but also the test sample size is smaller, the test condition is single, the test result is difficult to analogically apply, and the safety application of the tunnel protection door is restricted due to the large limitation.
Disclosure of Invention
Aiming at one or more of the defects or improvement demands of the prior art, the invention provides a wind pressure test bed of a tunnel protection door and a wind pressure test device comprising the same, wherein the stable clamping of the tunnel protection door is effectively realized through the wind pressure test bed, and the wind pressure test of the tunnel protection door is rapidly and accurately completed through the wind pressure test device.
In order to achieve the above object, according to one aspect of the present invention, there is provided a wind pressure test stand for a tunnel protection door, for clamping a protection door assembly to be tested, comprising a horizontally disposed base plate, and further comprising a fixing member vertically fixed to the base plate and a pressing member disposed opposite to the fixing member; wherein,
the fixing piece is of a plate-shaped structure with a certain thickness, a first closed cavity is formed in the fixing piece, a first square groove is formed in the end face, opposite to the pressing piece, of the fixing piece, the first cavity and the first square groove are separated by a first partition board, a plurality of first wind pressure holes communicated with the first square groove and the first cavity are formed in the first partition board at intervals, and a first air source interface communicated with the first cavity is formed in the outer wall surface of the fixing piece;
the pressing piece is of a plate-shaped structure with a certain thickness, a closed second cavity is formed in the pressing piece, a second square groove is formed in the end face, opposite to the fixing piece, of the pressing piece, the second cavity and the second square groove are separated by a second partition board, a plurality of second air pressure holes communicated with the second square groove and the second cavity are formed in the second partition board at intervals, and a second air source interface communicated with the second cavity is formed in the outer wall surface of the pressing piece;
the pressing piece is movably arranged on the bottom plate, the pressing piece can horizontally move relative to the fixing piece and is locked at a corresponding position, the protective door assembly can be vertically arranged between the fixing piece and the pressing piece, two side end faces of the partition wall of the protective door assembly are respectively abutted against the end faces of the fixing piece and the pressing piece, so that the first square groove and the second square groove are closed, and the protective door assembly to be subjected to wind pressure test is fixed.
As a further improvement of the invention, the protective door component comprises a partition wall and a door body, wherein the partition wall is of an annular plate-shaped structure, a square through hole which can be correspondingly installed in the door body is formed in the middle of the partition wall, and the door body can be correspondingly installed in the square through hole and is closed and locked.
As a further improvement of the invention, a test mounting piece with a strip-shaped structure is arranged corresponding to the partition wall, the bottom of the partition wall can be correspondingly fixed at the top of the test mounting piece, the bottom of the test mounting piece is axially provided with a sliding groove, and a sliding guide rail is correspondingly arranged on the top surface of the bottom plate at one side of the fixing piece, so that the sliding groove can be correspondingly matched with the sliding guide rail, and the rapid clamping of the protective door assembly is realized.
As a further improvement of the invention, the pressing piece can be removed from the bottom plate, the bottom of the pressing piece is provided with a pressing chute along the width direction, and a pressing guide rail is correspondingly arranged on the bottom plate, and the pressing chute can be matched with the pressing guide rail and realize the horizontal movement of the pressing piece.
As a further improvement of the present invention, a plurality of the first wind pressure holes are arranged in a matrix on the first partition plate, and/or a plurality of the second wind pressure holes are arranged in a matrix on the second partition plate.
As a further improvement of the present invention, the fixing member may be provided with a first seal member aligned in a circumferential direction on an end face of the pressing member, and/or the pressing member may be provided with a second seal member aligned in a circumferential direction on an end face of the fixing member.
As a further improvement of the invention, the base plate comprises a test base plate and an installation base plate, wherein the test base plate is used for bearing the fixing piece and the pressing piece, the installation base plate is arranged on one side of the test base plate, and two ends of the sliding guide rail are respectively arranged on the installation base plate and the top surface of the test base plate and are used for correspondingly installing the protective door assembly.
In another aspect of the present invention, there is provided a wind pressure test apparatus comprising the wind pressure test stand of the tunnel protection door, characterized in that,
the wind pressure test device further comprises a first wind pressure control assembly and a second wind pressure control assembly; wherein,
the first wind pressure control assembly comprises a first wind pressure controller capable of generating a positive wind pressure working condition and a first air storage tank communicated with the first wind pressure controller through a pipeline;
the second wind pressure control assembly comprises a second wind pressure controller capable of generating a negative wind pressure working condition and a second air storage tank communicated with the second wind pressure controller through a pipeline; and is also provided with
The three-position four-way electromagnetic reversing valve is correspondingly arranged between the two air storage tanks and the air pressure test bed, and is provided with two air inlets and two air outlets, the two air inlets are respectively communicated with the first air storage tank and the second air storage tank through pipelines, the two air outlets are respectively communicated with the first air source interface and the second air source interface through a first pipeline and a second pipeline, and then the air pressure test of the two sides of the protective door assembly can be correspondingly realized through the adjustment of the three-position four-way electromagnetic reversing valve.
As a further improvement of the invention, the first pipeline and the second pipeline are respectively provided with a control pressure valve, so that the control of the control pressure valves can be used for adjusting the wind pressure in the square grooves at two sides of the protective door assembly.
As a further improvement of the invention, the first pipeline is provided with a first control valve and/or the second pipeline is provided with a second control valve, and the connection or disconnection of the corresponding pipeline can be realized through the control of the two control valves.
The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
(1) According to the wind pressure test stand of the tunnel protective door, the fixing piece and the pressing piece which can be correspondingly matched are arranged, so that the protective door assembly can be correspondingly arranged between the fixing piece and the pressing piece, the protective door assembly is correspondingly pressed against one side end face of the fixing piece by the pressing piece, the fixing and clamping of the protective door assembly are realized, the fixing piece and the pressing piece are respectively provided with the inner cavity and the square groove corresponding to the two side end faces of the protective door assembly, the corresponding wind pressure working condition can be formed in the square groove, the wind pressure test of the protective door assembly is finished, the stable clamping of the protective door assembly is effectively realized, the test error caused by the clamping is reduced, the accuracy of the wind pressure test of the protective door assembly is ensured, the loading efficiency of the protective door assembly is improved, and the cost of the wind pressure test is reduced;
(2) According to the wind pressure test bed for the tunnel protective door, the fixing piece is fixedly arranged, the pressing piece is movably arranged, the test mounting piece, the sliding guide rail and other structures are arranged corresponding to the protective door component, and the pressing guide rail is correspondingly arranged, so that the clamping process of the protective door component is effectively simplified, the efficiency and convenience of clamping the protective door are improved, the period of wind pressure test of the protective door component is shortened, and the cost of wind pressure test is reduced;
(3) According to the wind pressure test stand of the tunnel protective door, the square grooves are formed in the end faces of the fixing piece and the pressing piece, the closed inner cavity is correspondingly formed, the inner cavity is correspondingly formed in a plurality of wind pressure holes to be communicated with the square grooves, the pressure maintaining and pressure stabilizing of the protective door assembly in the wind pressure test process are effectively achieved through the arrangement of the inner cavity, the door body of the protective door assembly can be uniformly stressed through the arrangement of the square grooves, errors in the test process are reduced, and the accuracy of the test is improved;
(4) According to the wind pressure test device for the tunnel protective door, the first wind pressure control component and the second wind pressure control component are correspondingly arranged, so that the generation of positive and negative wind pressure working conditions in the wind pressure test process of the protective door component is effectively realized, the fixing piece, the pressing piece and the two wind pressure control components are correspondingly communicated by correspondingly arranging the three-position four-way electromagnetic reversing valve, the generation and the switching of the wind pressure working conditions in the fixing piece and the pressing piece are effectively realized, the working conditions that the tunnel protective door is subjected to single-side piston wind, double-side piston wind and the like in a tunnel are accurately simulated, the selectivity of test schemes of the protective door component is improved, multiple test schemes can be selected for the protective door component to test, and the accuracy and the reliability of the wind pressure test are further improved;
(5) The wind pressure test device comprises the wind pressure test bed, and the wind pressure test device is provided with the control pressure valve corresponding to the fixing piece and the pressing piece respectively, so that the wind pressure working conditions at two sides of the protective door assembly can be accurately controlled, the accuracy of the wind pressure test is further ensured, and the test error in the test process is reduced;
(6) The wind pressure test bed of the tunnel protection door and the wind pressure test device comprising the same have the advantages of simple structure, simple and convenient control, strong selectivity of the test scheme, high accuracy of the test result, and capability of providing basis for structural design and matching installation of the tunnel protection door, improving the safety and reliability of application of the tunnel protection door, reducing the application cost of the tunnel protection door, and having excellent application and popularization values.
Drawings
FIG. 1 is a schematic diagram of an assembly structure of a wind pressure test stand of a tunnel protection door according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a pressing member of a wind pressure test stand of a tunnel protection door according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of the mating of a test mount of a compression test stand with a guard gate assembly in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the connection of air paths of an air pressure test device comprising an air pressure test stand according to an embodiment of the present invention;
like reference numerals denote like technical features throughout the drawings, in particular: 1. the fixing piece, 101, a first wind pressure hole, 102, a first sealing piece, 103, a first air source interface; 2. the pressing piece, 201, a second wind pressure hole, 202, a second sealing piece, 203, a second air source interface, 204 and a pressing chute; 3. a bottom plate 301, a test bottom plate 302, a mounting bottom plate 303, a pressing guide rail 304 and a sliding guide rail; 4. test mounting piece 401. Chute 402. Partition wall mounting piece; 5. protective door assembly 501, door body 502, partition wall; 6. the first wind pressure control assembly 601, a first wind pressure controller 602, a first air storage tank 603 and a first control valve; 7. the second wind pressure control assembly 701, a second wind pressure controller 702, a second air storage tank 703 and a second control valve; 8. and 9, controlling a pressure valve.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The wind pressure test bed of the tunnel protective door in the preferred embodiment of the invention is shown in fig. 1 to 3, wherein the wind pressure test bed comprises a fixing piece 1 and a pressing piece 2 which are vertically arranged oppositely; the fixing piece 1 and the pressing piece 2 in the preferred embodiment are respectively of a plate body structure with a certain thickness and hollow inside, the interiors of the two plate bodies are respectively provided with a closed internal cavity, square grooves with a certain depth, namely a first square groove and a second square groove, are respectively formed on two opposite end surfaces of the fixing piece 1 and the pressing piece 2 corresponding to the internal cavities, and the two square grooves are respectively separated from the internal cavities by a partition plate; further, a first partition plate is arranged between the inner cavity of the fixing piece 1 and the first square groove, and a second partition plate is arranged between the inner cavity of the pressing piece 2 and the second square groove.
Further, the fixing piece 1 in the preferred embodiment is vertically and fixedly arranged on the bottom plate 3, the bottom plate 3 can be correspondingly fixed on the bottom surface to support the fixing piece 1, and the pressing piece 2 is movably arranged, can be correspondingly matched with the fixing piece 1, and forms a test bed for a wind pressure test of the tunnel protection door; further, the base plate in the preferred embodiment is shown in fig. 1, which includes a test base plate 301 for fixing and supporting the fixing member 1 and a mounting base plate 302 for mounting the protective door assembly 5 to be tested, wherein the mounting base plate 302 is fixedly provided at one side of the test base plate 301 for mounting the protective door assembly 5 to be tested, and sliding guide rails 304 are correspondingly provided on the test base plate 301 and the mounting base plate 302 in the preferred embodiment for corresponding matching mounting of the protective door assembly 5, and then the fixing member 1 and the pressing member 2 are correspondingly provided at both sides of the sliding guide rails 304 with end surfaces parallel to the axis of the sliding guide rails 304.
Further, the fixing piece 1 is fixed on the test bottom plate 301 vertically arranged on one side of the sliding guide rail 304, the pressing piece 2 is movably and vertically arranged on the test bottom plate 301 on the other side of the sliding guide rail 304, and the pressing piece 2 can horizontally move along the direction perpendicular to the axis of the sliding guide rail 304 so as to be close to the fixing piece 1 or far from the fixing piece 2; it is further preferred that the pressing member 2 in the preferred embodiment is provided separately from the test base 301, which is removable from the test base 301, and that the pressing guide 303 is provided on the test base 301 corresponding to the pressing member 2, with its axis perpendicular to the axis of the sliding guide 304, and correspondingly, the pressing chute 204 is provided on the bottom of the pressing member 2 corresponding to the pressing guide 303, as shown in fig. 2, which can be correspondingly matched with the pressing guide 303, and enables the horizontal movement of the pressing member 2, thereby enabling the corresponding matching of the pressing member 2 with the fixing member 1.
Further, as shown in fig. 1 and 3, the protective door assembly 5 in the preferred embodiment includes a door body 501 and a partition wall 502, wherein the partition wall 502 in the preferred embodiment has an annular plate structure, a through hole penetrating through two plate surfaces is formed in the middle of the partition wall for installing a tunnel protective door, and then the door body 501 is correspondingly movably installed on an inner frame wall surface of the partition wall 502 through a plurality of installation pieces; further preferably, the door body 501 in the preferred embodiment includes two oppositely disposed door leaves, i.e. a first door leaf and a second door leaf, which are respectively movably mounted on two opposite inner frame wall surfaces of the partition 502, and the two door leaves can be correspondingly opened, closed and locked after being mounted in place, and the end surfaces of the locked door body 501 are flush with the plate surfaces of the partition 502.
Further, the test mounting piece 4 is provided corresponding to the protective door assembly 5, the test mounting piece 4 in the preferred embodiment has a long rod-shaped structure, the protective door assembly 5 may be vertically provided at the top thereof, that is, the bottom of the partition 502 may be correspondingly fixed to the top of the test mounting piece 4, and correspondingly, the partition mounting piece 402 for fixing the bottom of the partition 502 is provided at the top of the test mounting piece 4, so as to correspondingly fix the partition 502 to the top of the test mounting piece 4; further, the bottom of the test mounting piece 4 is provided with a sliding groove 401 corresponding to the sliding guide rail 304, so that the test mounting piece 4 can correspondingly match the sliding guide rail 304 through the sliding groove 401 and then drive the protective door assembly 5 to move along the axis of the sliding guide rail 304, thereby moving to a position between the fixing piece 1 and the pressing piece 2.
Further, the size of the guard door assembly 5 in the preferred embodiment is set corresponding to the size of the fixing member 1 and the pressing member 2, and the fixing member 1 and the pressing member 2 preferably have the same size; further, after the protective door assembly 5 moves in place, the two side end surfaces of the protective door assembly are respectively opposite to the first square groove and the second square groove, and one side end surface of the partition wall 502 is preferably abutted against the end surface of the fixing piece 1, and the first square groove is closed, then the pressing piece 2 moves on the pressing guide rail 304, so that the pressing piece 2 is close to the other side end surface of the protective door assembly 5, and finally the pressing piece 2 is abutted against one side end surface of the partition wall 502, which is away from the fixing piece 1, so that the second square groove on the pressing piece 2 is sealed.
Further, after the pressing member 2 in the preferred embodiment is moved into place, the position of the pressing member 2 may be correspondingly locked, and the locking manner may be achieved by providing locking members which can be matched with each other on the side surfaces of the fixing member 1 and the pressing member 2, or by providing locking members on the test base 301, so as to ensure that the protective door assembly 5 can be correspondingly clamped between the fixing member 1 and the pressing member 2. Further preferably, the first sealing member 102 is disposed on the end surface of the fixing member 1 corresponding to the first square groove along the circumferential direction, and correspondingly, the second sealing member 202 is disposed on the end surface of the pressing member 2 corresponding to the second square groove along the circumferential direction, so that the two sealing members can correspondingly abut against the two side end surfaces of the partition wall 502, and corresponding sealing of the two square grooves is realized.
Further, in the preferred embodiment, a plurality of through holes for communicating the internal cavity and the first square groove, namely, a first wind pressure hole 101, are formed on the first partition board of the fixing piece 1 at intervals, and a plurality of through holes for communicating the second square groove, namely, a second wind pressure hole 201, are formed on the second partition board of the pressing piece 2 at intervals, and then the first wind pressure hole 101 and the second wind pressure hole 201 are aligned with the two side end faces of the door body 501 respectively; further preferably, the plurality of first wind pressure holes 101 and/or the plurality of second wind pressure holes 201 are arranged in a matrix on the corresponding partition, as shown in fig. 1 and fig. 2, so as to ensure that all parts of the door body of the tunnel protection door are stressed uniformly.
Further, a first air source interface 103 is provided on the fixing member 1 corresponding to the internal cavity thereof, and is correspondingly communicated with the internal cavity, and is used for connecting the air path pipeline and forming a corresponding air pressure working condition in the internal cavity of the fixing member 1, correspondingly, a second air source interface 203 is provided on the pressing member 2 corresponding to the internal cavity thereof, so as to be communicated with the internal cavity, so as to form a corresponding air pressure working condition in the internal cavity of the pressing member 2; further preferably, the first air source interface 103 and the second air source interface 203 in the preferred embodiment are disposed on the end surface of the fixing member 1 facing away from the first square groove and the end surface of the pressing member 2 facing away from the second square groove, and then after the protective door assembly 5 is clamped between the fixing member 1 and the pressing member 2, corresponding air pressure working conditions can be formed on two sides of the door body 501 correspondingly, so as to complete the air pressure test of the tunnel protective door.
Further, in order to complete the wind pressure test of the wind pressure test stand on the protective door assembly 5, in the preferred embodiment, a first wind pressure control assembly 6 is provided corresponding to the fixing member 1, and includes a first wind pressure controller 601 and a first air storage tank 602, where the first wind pressure controller 601 is connected to the first air storage tank 602 through a pipeline, and a stable positive wind pressure working condition or a stable negative wind pressure working condition can be formed in the first air storage tank 602; further, the first air storage tank 602 is correspondingly connected to the fixing piece 1 through a first pipeline, that is, one end of the first pipeline is correspondingly connected to the first air source interface 103, and the other end of the first pipeline is correspondingly communicated with the first air storage tank 602; preferably, a first control valve 603 is correspondingly arranged on the first pipeline, and can correspondingly control the on-off of the first pipeline, and is preferably an electromagnetic switch valve.
Further, in the preferred embodiment, a second wind pressure control assembly 7 is provided corresponding to the pressing member 2, and includes a second wind pressure controller 701 and a second air tank 702, where the second wind pressure controller 701 is connected to the second air tank 702 through a pipeline, and a stable positive wind pressure working condition or a stable negative wind pressure working condition can be formed in the second air tank 702; further, the second air storage tank 702 is correspondingly connected to the pressing piece 2 through a second pipeline, that is, one end of the second pipeline is correspondingly connected to the second air source interface 203, and the other end of the second pipeline is correspondingly communicated with the second air storage tank 702; preferably, the second pipeline is correspondingly provided with a second control valve 703, which can correspondingly control the on-off of the second pipeline, and can be further preferably an electromagnetic switch valve.
Further, in order to realize the switching control of the wind pressure working conditions at two sides of the door body 501 in the wind pressure test bed, a three-position four-way electromagnetic reversing valve 8 is arranged corresponding to a first pipeline, a second pipeline and two air tanks, the three-position four-way electromagnetic reversing valve comprises two air inlets and two air outlets, the two air inlets are respectively communicated with the first air tank 602 and the second air tank 702, the two air outlets are respectively communicated with the first pipeline and the second pipeline, and then the first air tank 602 and the second air tank 702 can be communicated with the corresponding air tanks through adjusting the three-position four-way electromagnetic reversing valve 8, namely, the first air tank 602 can respectively act on the first pipeline and the second pipeline, and the second air tank 702 can also respectively act on the first pipeline and the second pipeline, so that the corresponding adjustment of the wind pressure working conditions is realized.
Due to the addition of the three-position four-way electromagnetic directional valve 8, the arrangement of the first wind pressure controller 601 and the second wind pressure controller 701 can be effectively simplified, before the three-position four-way electromagnetic directional valve 8 is not arranged, in order to ensure that the positive wind pressure working condition and the negative wind pressure working condition can be realized in the first wind pressure control assembly 6, the first wind pressure controller 601 must include at least one vacuum pump and at least one air compressor, correspondingly, the situation of the second wind pressure controller 701 is similar, after the three-position four-way electromagnetic directional valve 8 is added, the first wind pressure controller 601 can be correspondingly arranged as a vacuum pump, the second wind pressure controller 701 is arranged as an air compressor, namely, negative pressure working conditions are respectively formed in the first air storage tank 602, positive pressure working conditions are formed in the second air storage tank 702, then the wind pressure working conditions on two sides of the protective door assembly 5 are regulated through the adjustment of the three-position four-way electromagnetic directional valve 8, the control process of wind pressure test is effectively simplified, the control precision is improved, and the test period is shortened.
It is further preferred that control pressure valves 9 are provided correspondingly on the first and second pipelines, respectively, to achieve control and adjustment of the magnitudes of pressures in the fixing member 1 and the pressing member 2. Through the corresponding matching of the first wind pressure control assembly 6 and the second wind pressure control assembly 7 with the fixing piece 1 and the pressing piece 2, the stress state of the end faces of the two sides of the protective door assembly 5 under the action of positive and negative wind pressure can be simulated, so that the stress state of the tunnel protective door arranged between the two tunnels under the action of single-side and double-side piston wind can be simulated effectively.
In summary, in the preferred embodiment, the wind pressure test stand of the tunnel protection door and the first wind pressure control component 6 and the second wind pressure control component 7 may form a wind pressure test device of the tunnel protection door, the schematic air path connection of which is shown in fig. 4, wherein the first wind pressure control component 6 may form a positive wind pressure working condition, a negative wind pressure working condition, or a normal pressure working condition on one side of the protection door component 5 (the first wind pressure controller 601 does not work or the first control valve 603 is closed); the second wind pressure control component 7 can form a positive wind pressure working condition, a negative wind pressure working condition or a normal pressure working condition (the second wind pressure controller 701 does not work or the second control valve 703 is closed) on the other side of the protective door component 5; therefore, the wind pressure test of the 3×3 group test scheme can be performed on the protective door assembly 5, various stress situations born by the protective door assembly 5 when applied in the tunnel can be fully simulated, the accuracy of the wind pressure test can be improved, and the stress environment of the tunnel protective door when applied in the single-hole tunnel and the double-hole tunnel can be fully simulated.
Further preferably, the wind pressure controller, the three-position four-way electromagnetic directional valve 8, the control pressure valve 9, the first control valve 603 and the second control valve 703 in the corresponding preferred embodiments are provided with control systems, which are respectively connected with corresponding valve bodies and devices through circuits, as shown by dotted lines in fig. 4, and then the control systems can control the corresponding valve bodies and devices, control the generation of wind pressure working conditions, adjust the on-off of each valve body, monitor the state of each valve body, and realize the overall control of the air path system of the wind pressure test device.
Further, when the wind pressure test device in the preferred embodiment of the invention is used for wind pressure test, the deformation test and the fatigue resistance test of the protective door assembly 5 can be correspondingly carried out, wherein the deformation test is mainly used for detecting the deflection value (angular displacement value) relative to the normal line of the surface under the wind pressure effect that the pressure difference of the tunnel protective door gradually increases to reach a certain value; the anti-fatigue detection is mainly used for detecting the capability of the tunnel protection door to resist damage and dysfunction under the alternating positive and negative impact action of a certain pressure difference. Meanwhile, the wind pressure test device can also perform unidirectional test and bidirectional test, wherein the unidirectional test refers to that positive pressure or negative pressure is always adopted in the pressurizing process of the tunnel protective door, the switching of positive and negative wind pressure working conditions does not exist, and the working process is generally as follows: preparatory pressurization+ (test pressurization + stabilization) (cycle) +end; the bidirectional test refers to the alternating switching of positive and negative wind pressure in the pressurization process of the tunnel protection door, and the working process is generally as follows: preparatory pressurization+ (detection of forward pressurization + stabilization + detection of reverse pressurization + stabilization) (cycle) +end.
Specifically, the wind pressure test device may perform a test by the following procedure:
firstly, the door body 501 of the protective door assembly 5 is correspondingly and firmly arranged in the partition wall 502 according to the actual installation mode, so that the door body 501 is ensured not to incline or deform, the door body 501 can be ensured to be normally opened and locked, and the door body 501 is ensured to be in a locking state when the partition wall 502 is fixed in a wind pressure test bed; the partition 502 is fixedly arranged on the test mounting piece 4, and is moved to one side of the fixing piece 1 through the sliding guide rail 304, and then the pressing piece 2 is correspondingly matched, so that the clamping of the protective door assembly 1 is completed.
Secondly, checking whether the corresponding pipeline works abnormally, and determining whether the first wind pressure control assembly 6 and the second wind pressure control assembly 7 are in a normal working state; if the operation is normal, the next operation can be carried out, and if the operation is abnormal, corresponding adjustment measures are adopted; further, the prepared wind pressure test device is subjected to preliminary pressurization, and the first wind pressure controller 601 and the second wind pressure controller 701 are controlled to work respectively, so that the generation of the air pressure working conditions in the corresponding air storage tanks is completed, and the two air storage tanks are in a specified pressure environment.
Thirdly, adjusting the corresponding control valve through the control system to realize the adjustment of the air pressure at the two sides of the protective door assembly 5; finally, whether the air pressure in the air path space in the air pressure test bed is normal is detected, the pressure stabilizing or pressure maintaining process is carried out according to test requirements, and then the air pressure working condition on the protective door assembly 5 can be regulated and stabilized through the corresponding control of the three-position four-way electromagnetic reversing valve 8 and the two control pressure valves 9.
The above-mentioned process is circularly carried out to complete the wind pressure test of the protective door assembly 5.
When the wind pressure test device of the tunnel protection door in the preferred embodiment of the invention is used for the wind pressure test of the tunnel protection door, the wind pressure test device is used for testing the wind pressure of the tunnel protection door according to (TB 10020-2017)The section size of the test space defining the tunnel protection door is 3000mm multiplied by 2000mm, the thickness of the test space is 10mm, namely the volume of the single-sided test space is 0.06m 3 And the action times of the piston wind in a period of one year are defined as 20 ten thousand times. Moreover, in a 350km/h single-hole double-track tunnel, the wind pressure of the tunnel is between +10kPa and-10 kPa. Further, when the wind pressure test device of the tunnel protection door in the preferred embodiment of the invention is used for wind pressure test, the period of one test is added to be 2s, 20 ten thousand tests can be completed in about 5 days, the period of the tunnel protection door test is greatly shortened, the efficiency of the tunnel protection door wind pressure test is improved, and the cost of the wind pressure test is reduced.
According to the wind pressure test bed for the tunnel protection door and the wind pressure test device comprising the same, the rapid fixing of the protection door assembly 5 is effectively realized through the corresponding arrangement of the fixing piece 1 and the pressing piece 2 which can be correspondingly matched, the two sides of the protection door assembly 5 are respectively provided with the closed inner cavities, then the wind pressure control assemblies are respectively arranged corresponding to the inner cavities at the two sides of the protection door assembly 5, the wind pressure environment in the corresponding inner cavities is correspondingly controlled by the wind pressure control assemblies, and therefore various stress states of the protection door assembly 5 when applied in a tunnel are effectively simulated, and the wind pressure test of the tunnel protection door is completed. The wind pressure test bed is simple in structure and convenient to control, can quickly and stably realize fixation of the protective door assembly, is high in loading stability and reliability of the tunnel protective door, is simple in wind pressure environment control at two sides of the protective door assembly 5 in the wind pressure test process, is high in controllability, can fully simulate various wind pressure action environments, and is further capable of simplifying pipeline control of a wind pressure test device, guaranteeing accuracy of wind pressure test, reducing errors in the test process, providing accurate basis for structural design and matching installation of the tunnel protective door, reducing failure or falling off of the tunnel protective door in the application process, guaranteeing safety and stability of railway tunnel operation, avoiding unnecessary economic loss, and has excellent application and popularization values.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The wind pressure test bed for the tunnel protective door is used for clamping a protective door assembly to be tested and comprises a bottom plate which is horizontally arranged, and is characterized by further comprising a fixing piece which is vertically fixed on the bottom plate and a pressing piece which is arranged opposite to the fixing piece; wherein,
the fixing piece is of a plate-shaped structure with a certain thickness, a first closed cavity is formed in the fixing piece, a first square groove is formed in the end face, opposite to the pressing piece, of the fixing piece, the first cavity and the first square groove are separated by a first partition board, a plurality of first wind pressure holes communicated with the first square groove and the first cavity are formed in the first partition board at intervals, and a first air source interface communicated with the first cavity is formed in the outer wall surface of the fixing piece;
the pressing piece is of a plate-shaped structure with a certain thickness, a closed second cavity is formed in the pressing piece, a second square groove is formed in the end face, opposite to the fixing piece, of the pressing piece, the second cavity and the second square groove are separated by a second partition board, a plurality of second air pressure holes communicated with the second square groove and the second cavity are formed in the second partition board at intervals, and a second air source interface communicated with the second cavity is formed in the outer wall surface of the pressing piece;
the pressing piece is movably arranged on the bottom plate, the pressing piece can horizontally move relative to the fixing piece and is locked at a corresponding position, the protective door assembly can be vertically arranged between the fixing piece and the pressing piece, two side end faces of the partition wall of the protective door assembly are respectively abutted against the end faces of the fixing piece and the pressing piece, so that the first square groove and the second square groove are closed, and the protective door assembly to be subjected to wind pressure test is fixed.
2. The wind pressure test stand of a tunnel protective door according to claim 1, wherein the protective door assembly comprises a partition wall and a door body, the partition wall is of an annular plate-shaped structure, a square through hole capable of correspondingly installing the door body is formed in the middle of the partition wall, and the door body can be correspondingly installed in the square through hole and is locked in a closing mode.
3. The wind pressure test stand of a tunnel protection door according to claim 2, wherein a test mounting piece with a strip-shaped structure is arranged corresponding to the partition wall, the bottom of the partition wall can be correspondingly fixed at the top of the test mounting piece, a sliding groove is formed in the bottom of the test mounting piece along the axial direction, and a sliding guide rail is correspondingly arranged on the top surface of the bottom plate at one side of the fixing piece, so that the sliding groove can be correspondingly matched with the sliding guide rail, and quick clamping of the protection door assembly is realized.
4. The wind pressure test stand of the tunnel protection door according to any one of claims 1 to 3, wherein the pressing piece can be removed from the base plate, a pressing sliding groove is arranged at the bottom of the pressing piece along the width direction, a pressing guide rail is correspondingly arranged on the base plate, and the pressing sliding groove can be matched with the pressing guide rail and realize horizontal movement of the pressing piece.
5. A wind pressure test stand of a tunnel protection door according to any one of claims 1-3, wherein a plurality of the first wind pressure holes are arranged in a matrix on the first partition and/or a plurality of the second wind pressure holes are arranged in a matrix on the second partition.
6. The wind pressure test stand of the tunnel protection door according to any one of claims 1 to 3, wherein the fixing piece can be aligned with a first sealing piece on the end face of the pressing piece along the circumferential direction, and/or the pressing piece can be aligned with a second sealing piece on the end face of the fixing piece along the circumferential direction.
7. The wind pressure test stand of the tunnel protection door according to claim 3, wherein the base plate comprises a test base plate and a mounting base plate, the test base plate is used for bearing the fixing piece and the pressing piece, the mounting base plate is arranged on one side of the test base plate, and two ends of the sliding guide rail are respectively arranged on the mounting base plate and the top surface of the test base plate, so as to be used for correspondingly mounting the protection door assembly.
8. A wind pressure test device comprising the wind pressure test stand of the tunnel protection door according to any one of claims 1 to 7, characterized in that,
the wind pressure test device further comprises a first wind pressure control assembly and a second wind pressure control assembly; wherein,
the first wind pressure control assembly comprises a first wind pressure controller capable of generating a positive wind pressure working condition and a first air storage tank communicated with the first wind pressure controller through a pipeline;
the second wind pressure control assembly comprises a second wind pressure controller capable of generating a negative wind pressure working condition and a second air storage tank communicated with the second wind pressure controller through a pipeline; and is also provided with
The three-position four-way electromagnetic reversing valve is correspondingly arranged between the two air storage tanks and the air pressure test bed, and is provided with two air inlets and two air outlets, the two air inlets are respectively communicated with the first air storage tank and the second air storage tank through pipelines, the two air outlets are respectively communicated with the first air source interface and the second air source interface through a first pipeline and a second pipeline, and then the air pressure test of the two sides of the protective door assembly can be correspondingly realized through the adjustment of the three-position four-way electromagnetic reversing valve.
9. The wind pressure test device of claim 8, wherein control pressure valves are respectively arranged on the first pipeline and the second pipeline, so that the wind pressure in the square grooves at two sides of the protective door assembly can be adjusted through the control of the control pressure valves.
10. The wind pressure test device according to claim 8 or 9, wherein a first control valve is arranged on the first pipeline, and/or a second control valve is arranged on the second pipeline, and the connection or disconnection of the corresponding pipelines can be realized through the control of the two control valves.
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| CN111060298B (en) * | 2019-12-20 | 2022-09-09 | 北京铁科首钢轨道技术股份有限公司 | Safety protection door fatigue test device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110115446A (en) * | 2010-04-15 | 2011-10-21 | 한국건설기술연구원 | Pressure control system for door leakage performance testing apparatus |
| CN204575468U (en) * | 2015-04-12 | 2015-08-19 | 长春机械科学研究院有限公司 | High speed impact compression deformation test machine |
| CN205990839U (en) * | 2016-07-26 | 2017-03-01 | 中国铁路经济规划研究院 | Upper and lower strut type closedown structure for tunnel protection door, tunnel cavern door |
| US9863840B1 (en) * | 2014-12-22 | 2018-01-09 | Amazon Technologies, Inc. | Multi-faceted test chamber |
| CN107907316A (en) * | 2017-11-15 | 2018-04-13 | 潘绍兵 | A kind of valve pressure testing device |
| CN107941446A (en) * | 2017-12-13 | 2018-04-20 | 中铁第四勘察设计院集团有限公司 | A kind of repeated impact test device suitable for tunnel protection door |
| CN108757032A (en) * | 2018-06-04 | 2018-11-06 | 中铁第四勘察设计院集团有限公司 | A kind of composite material tunnel fire proofing door, fire door system and preparation method |
| CN108956318A (en) * | 2018-07-17 | 2018-12-07 | 潘锐 | A kind of pressure testing/detecting device |
| CN109060392A (en) * | 2018-07-24 | 2018-12-21 | 天津航天瑞莱科技有限公司 | A kind of gas pressure loads pilot system of controllable temperature |
| CN208333852U (en) * | 2018-04-29 | 2019-01-04 | 长庆石油勘探局技术监测中心 | It is a kind of abnormal shape valve pressure test use protective door |
| CN209326956U (en) * | 2019-01-16 | 2019-08-30 | 中铁第四勘察设计院集团有限公司 | A kind of pressure decay test platform of tunnel protection door and pressure decay test device comprising it |
-
2019
- 2019-01-16 CN CN201910041281.8A patent/CN109724788B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110115446A (en) * | 2010-04-15 | 2011-10-21 | 한국건설기술연구원 | Pressure control system for door leakage performance testing apparatus |
| US9863840B1 (en) * | 2014-12-22 | 2018-01-09 | Amazon Technologies, Inc. | Multi-faceted test chamber |
| CN204575468U (en) * | 2015-04-12 | 2015-08-19 | 长春机械科学研究院有限公司 | High speed impact compression deformation test machine |
| CN205990839U (en) * | 2016-07-26 | 2017-03-01 | 中国铁路经济规划研究院 | Upper and lower strut type closedown structure for tunnel protection door, tunnel cavern door |
| CN107907316A (en) * | 2017-11-15 | 2018-04-13 | 潘绍兵 | A kind of valve pressure testing device |
| CN107941446A (en) * | 2017-12-13 | 2018-04-20 | 中铁第四勘察设计院集团有限公司 | A kind of repeated impact test device suitable for tunnel protection door |
| CN208333852U (en) * | 2018-04-29 | 2019-01-04 | 长庆石油勘探局技术监测中心 | It is a kind of abnormal shape valve pressure test use protective door |
| CN108757032A (en) * | 2018-06-04 | 2018-11-06 | 中铁第四勘察设计院集团有限公司 | A kind of composite material tunnel fire proofing door, fire door system and preparation method |
| CN108956318A (en) * | 2018-07-17 | 2018-12-07 | 潘锐 | A kind of pressure testing/detecting device |
| CN109060392A (en) * | 2018-07-24 | 2018-12-21 | 天津航天瑞莱科技有限公司 | A kind of gas pressure loads pilot system of controllable temperature |
| CN209326956U (en) * | 2019-01-16 | 2019-08-30 | 中铁第四勘察设计院集团有限公司 | A kind of pressure decay test platform of tunnel protection door and pressure decay test device comprising it |
Non-Patent Citations (4)
| Title |
|---|
| Aerodynamic pressures around high-speed trains: the transition from unconfined to enclosed spaces;Timothy Gilbert;SAGE journals;全文 * |
| 半高式屏蔽门在模拟风压荷载及人群挤压荷载作用下结构安全性能测试;吴永昌;广州建筑;全文 * |
| 基于微结构光纤分布式传感的铁路隧道门智能防护技术研究;耿明;红外与激光工程;全文 * |
| 新型铁路隧道防护门结构设计及疲劳性能试验研究;王志伟;中国铁路;全文 * |
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