Simulated bridge deck structure wheel type rolling fatigue loading test system and use method

Abstract

The invention provides a simulated bridge deck structure wheel type rolling fatigue loading test system, which structurally comprises a connecting rod, a roller and a bottom plate, and further comprises a support frame body unit which is arranged on the bottom plate and is used for supporting a bridge deck, the rotary supporting plate unit is arranged on the supporting frame body unit in a hinged mode and used for assembling and disassembling a bridge deck slab in a rotating mode, and the transverse and vertical limiting frame body unit is arranged on the supporting frame body unit in an inserted mode and used for laterally blocking the rolling wheels. The transverse and vertical limiting frame body units are arranged on the rollers, the limiting block units are arranged on the rollers and used for being inserted into the transverse and vertical limiting frame body units, and the jacking blocks are arranged on the supporting frame body units and used for assembling and disassembling the bridge deck slab in the mode that the rotary supporting plate units are jacked up. In addition, the invention also provides a use method of the test system.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a wheel-type rolling fatigue loading test system simulating a bridge deck structure and a use method thereof. Background Art

[0002] In the wheel rolling fatigue loading test system simulating the bridge deck structure, the test object is the bridge deck, and the wheel rolling fatigue is provided in the form of a motor driving the crank, connecting rod and roller in sequence, and finally the roller rolls back and forth on the bridge deck, thereby simulating and measuring the rolling fatigue resistance of the real bridge in actual use.

[0003] Generally, the structure of the above test system mainly includes a support frame and an automated reciprocating roller, wherein the former is used to stably support the bridge deck and the latter is used to provide the required strength and continuous rolling friction on the bridge deck.

[0004] For example, the Chinese utility model patent with authorization announcement number CN204389321U and authorization announcement date 2015.06.10 discloses a bridge deck structure wheeled rolling fatigue loading test platform, whose structure mainly includes: foundation, track, column, connecting beam, vertical lifting device, horizontal shifting device, loading wheel, variable frequency motor, crank, connecting rod, inertia wheel, servo actuator, and accumulator.

[0005] The main advantages of the rolling fatigue loading test platform in this utility model patent are: it can reasonably simulate the working environment of the bridge deck structure, improve the actual wheel simulation level, and improve the wheel loading efficiency and accuracy.

[0006] However, in actual use, the above test platform still has at least the following relatively poor practicality problems, specifically manifested as follows: First, when replacing the bridge deck structure specimens, they need to be moved up and down on the foundation, which is too cumbersome. Second, when the bridge deck structure specimen is replaced, the entire loading unit needs to be lifted up twice and lowered twice respectively, so that the previous bridge deck structure specimen that has been tested can be smoothly taken out and the next bridge deck structure specimen to be tested can be smoothly installed. The overall operation is too troublesome. Summary of the invention

[0007] The invention provides a wheel-type rolling fatigue loading test system for simulating a bridge deck structure, and the technical problem to be solved is: how to further improve the practicability of the test system.

[0008] In addition, the present invention also provides a method for using the test system.

[0009] The technical solution adopted by the present invention to solve the above-mentioned problems is: a wheeled rolling fatigue loading test system simulating a bridge deck structure, the structure includes a connecting rod, a roller, and a base plate, and also includes a support frame unit arranged on the base plate and used to support the bridge deck, a rotating support plate unit hingedly arranged on the support frame unit and used to install and remove the bridge deck by rotation, a horizontal and vertical limiting frame unit plugged into the support frame unit and used to laterally block the roller, a limiting block unit arranged on the roller and used to insert the horizontal and vertical limiting frame unit, and a lifting block arranged on the support frame unit and used to install and remove the bridge deck by lifting the rotating support plate unit.

[0010] A further preferred technical solution is that the supporting frame unit includes a low column and a high column respectively arranged at two side positions on the upper surface of the base plate, a fixed connecting hole plate arranged on the low column and used for plugging the horizontal and vertical limiting frame unit, and a lifting connecting hole plate arranged on the high column and provided with the lifting block and used for plugging the horizontal and vertical limiting frame unit.

[0011] A further preferred technical solution is that the support frame unit also includes a vertical channel arranged on the side of the high-position column and used to laterally fix the lifting and connecting hole plate, and a horizontal limit block arranged on the lifting and connecting hole plate and used to engage the vertical channel.

[0012] A further preferred technical solution is that the rotating support plate unit includes a hinge block arranged on the upper end surface of the low-position column, and a rotating plate whose upper surface is arranged on the hinge block and the high-position column and on which a bridge panel is provided and which is used to receive the upward lifting action of the lifting block.

[0013] A further preferred technical solution is that the rotating plate is provided with a sliding chamfered surface for installing and removing the bridge deck.

[0014] A further preferred technical solution is that the horizontal and vertical limit frame unit includes two vertical poles respectively inserted into the fixed connection hole plate and the lifting connection hole plate, a horizontal connecting plate arranged on the two vertical poles, and a limit groove arranged on the side of the horizontal connecting plate and used to insert the limit block unit.

[0015] A further preferred technical solution is that the horizontal and vertical limiting frame unit also includes a supporting elastic ring which is sleeved on one of the vertical poles and is used to lift the roller off the bridge deck by abutting against the upper surface of the fixed connection hole plate.

[0016] A further preferred technical solution is that the limit block unit includes a load plate hingedly arranged on the connecting rod and provided with the roller on the lower surface, and a lateral limit insertion block arranged on the load plate and used for inserting into the limit groove.

[0017] A method for using a wheeled rolling fatigue loading test system for simulating a bridge deck structure, wherein the bridge deck is replaced in the following steps: S1. After the test is completed, lift the transverse connecting plate upwards and keep the roller higher than the bridge deck; S2, sliding the supporting elastic ring downward on the vertical rod so that the supporting elastic ring abuts against the upper surface of the fixed connecting hole plate, releasing the lifting action on the horizontal connecting plate; S3, lifting the lifting connection hole plate upwards, so that the lifting block tilts up one side of the rotating plate, until the bridge deck that has been tested slides off the rotating plate; S4. Maintain the inclination angle of the rotating plate, or further increase the inclination angle of the rotating plate, so that the rotating plate abuts against the operating table for slidingly mounting another bridge deck to be tested. S5, lowering the lifting connection hole plate until the rotating plate is pressed on the high-position column again; S6. Slide the supporting elastic ring upward on the vertical pole and lower the transverse connecting plate at the same time until the roller is pressed on the bridge deck again.

[0018] A further preferred technical solution is that in S1, before the transverse connecting plate is lifted upward, the counterweight block on the limiting block unit is first removed.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects: First, the rotating support plate unit provides a sliding slope, so that the bridge deck can be slid off and slid on when replaced, ensuring that the bridge deck replacement operation is relatively labor-saving, significantly improving the practicality of the test system; Second, the horizontal and vertical limit frame units provide a temporary support function, so that the roller and the limit block unit can be lifted and lowered once to replace the bridge deck, which is very practical and efficient; Third, the roller and the limit block unit are in a relatively high position after being lifted, which just leaves upper space for the rotation mode of one end of the rotating support plate unit to be tilted, ensuring that the above two beneficial effects can be carried out in coordination without interfering with each other; Fourthly, the combination of the horizontal and vertical limit frame units and the jacking block has both the function of triggering the rotation support plate unit to rotate independently of each other, and the function of triggering the roller to lift, ensuring that the test system has the advantages of high structural integration and high compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the position structure of the limit block unit in the present invention.

[0022] Figure 3 It is a schematic diagram of the position structure of the support frame unit in the present invention.

[0023] Figure 4 It is a schematic diagram of the position and shape of the vertical channel and the horizontal limit block in the present invention from a top view.

[0024] Figure 5 It is a schematic diagram of the use of the rotating support plate unit in the present invention.

[0025] Figure 6 It is a schematic diagram of the position structure of the horizontal and vertical limiting frame units in the present invention.

[0026] Figure 7 It is a schematic diagram of the use of the supporting elastic ring in the present invention.

[0027] Figure 8 It is a schematic diagram of the position of the limit block unit in the present invention from a top view.

[0028] In the figure, the meanings of the symbols are as follows: Bridge deck a, operating platform b; Connecting rod 11, roller 12, base plate 13, crank 14, reducer 15; Support frame unit 1, rotating support plate unit 2, horizontal and vertical limit frame unit 3, limit block unit 4, lifting block 5, counterweight block 6; A low column 101, a high column 102, a fixed connection hole plate 103, a lifting connection hole plate 104, a vertical channel 105, and a horizontal limit block 106; Articulated block 201, rotating plate 202, sliding chamfered surface 203; Vertical pole 301, transverse connecting plate 302, limiting groove 303, supporting elastic ring 304; The load plate 401 , the insertion block 402 for lateral limiting, the counterweight block baffle 403 , and the connecting rod hinge seat 404 . DETAILED DESCRIPTION

[0029] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0030] As attached Figure 1-8As shown, a wheeled rolling fatigue loading test system simulating a bridge deck structure comprises a connecting rod 11, a roller 12, and a base plate 13, and also comprises a support frame unit 1 arranged on the base plate 13 and used to support a bridge deck a, a rotating support plate unit 2 hingedly arranged on the support frame unit 1 and used to install and remove the bridge deck a by rotation, a horizontal and vertical limiting frame unit 3 inserted on the support frame unit 1 and used to laterally block the roller 12, a limiting block unit 4 arranged on the roller 12 and used to insert the horizontal and vertical limiting frame unit 3, and a lifting block 5 arranged on the support frame unit 1 and used to install and remove the bridge deck a by lifting the rotating support plate unit 2.

[0031] In this embodiment, the test system has relatively high practicality, which is reflected in at least the following two aspects.

[0032] First, the structural relationship between the rotating support plate unit 2 and the supporting frame unit 1 is that one side is hinged and the other side is only supported, and the lifting block 5 is located on the only supported side. Therefore, the horizontal and vertical limiting frame unit 3 rises together with the lifting block 5, which can lift up the only supported side of the rotating support plate unit 2, so that the hinged side of the rotating support plate unit 2 can "touch the ground", that is, against the operating table b, so that the bridge deck a that has completed the test can be slid off and another bridge deck a to be tested can be slid on.

[0033] Second, in the words "horizontal and vertical limiting" of the horizontal and vertical limiting frame unit 3, "horizontal limiting" refers to blocking the roller 12 horizontally to prevent it from tilting, and "vertical limiting" means that it can maintain a relatively high position after being lifted vertically, so that the roller 12 can be lifted off the bridge deck a, leaving enough upper space for the rotation of the bridge deck a, and until another bridge deck a is reinstalled, the horizontal and vertical limiting frame unit 3 is lowered together with the roller 12, eliminating a complete roller 12 lifting and lowering operation, which is very practical and efficient.

[0034] The rotating support plate unit 2 is in the shape of a rectangle, and its long side is in the direction of sliding removal and sliding installation of the bridge deck a. The support frame unit 1 provides two hinge points and two support points for the rotating support plate unit 2. There are two horizontal and vertical limit frame units 3, which are respectively arranged on both sides of the roller 12.

[0035] Finally, the horizontal and vertical limit frame unit 3 can prevent the roller 12 from tilting to both sides through its own large structural and material rigidity, even if the roller 12 is thin. Therefore, the test system can simulate a larger roller pressure under the same load, which can significantly expand the scope of application of the test system.

[0036] The support frame unit 1 includes a low column 101 and a high column 102 respectively arranged at two side positions on the upper surface of the base plate 13, a fixed connection hole plate 103 arranged on the low column 101 and used for plugging the horizontal and vertical limiting frame unit 3, and a lifting connection hole plate 104 arranged on the high column 102 and provided with the lifting block 5 and used for plugging the horizontal and vertical limiting frame unit 3.

[0037] In this embodiment, the number of the low-position column 101 and the number of the high-position column 102 are both 2. The above-mentioned words “low position, high position” mean that the upper end surface height of the low-position column 101 is lower than the upper end surface height of the high-position column 102.

[0038] In addition, the height difference between the upper end surfaces of the two also satisfies the following setting: when the rotating support plate unit 2 is pressed on the upper end surface of the high-position column 102, the rotating support plate unit 2 itself is horizontal. Therefore, the above-mentioned upper end surface height difference is essentially the installation height reserved for the hinge structure of the rotating support plate unit 2.

[0039] The fixed connection hole plate 103 is welded or screwed to the two low-position columns 101 , and the lifting connection hole plate 104 is plugged to the two high-position columns 102 .

[0040] The support frame unit 1 also includes a vertical channel 105 arranged on the side of the high-position column 102 and used to laterally fix the lifting connection hole plate 104, and a horizontal limit block 106 arranged on the lifting connection hole plate 104 and used to engage the vertical channel 105.

[0041] In this embodiment, the vertical channel 105 does not vertically penetrate the high column 102, but provides a supporting bottom surface for the horizontal limit block 106 to ensure that when the test system is used, the horizontal and vertical limit frame unit 3 is always plugged into the lifting connection hole plate 104. For details, please refer to the attached Figure 3 .

[0042] The cross-sectional shapes of the vertical channel 105 and the transverse limit block 106 are isosceles trapezoidal or T-shaped, and the former is "small outside and large inside" in the transverse direction, thereby avoiding harmful transverse displacement of the lifting connection hole plate 104.

[0043] The rotating support plate unit 2 includes an articulated block 201 arranged on the upper end surface of the low-position column 101, and a rotating plate 202 whose upper surface is arranged on the articulated block 201 and the high-position column 102, and on which a bridge panel a is provided and which is used to receive the upward lifting action of the lifting block 5.

[0044] In this embodiment, two hinge blocks 201 and one hinge shaft are provided on the upper end surface of each low-position column 101 to ensure that the rotating plate 202 can effectively rotate around the hinge shaft. The two end points of the reciprocating rotation of the rotating plate 202 are: First, the hinged side of the rotating plate 202 abuts against the operating table b, so that the bridge deck a can be slidably removed or installed; Second, the side of the rotating plate 202 away from the hinge is placed on the high column 102 to start the fatigue loading test. At this time, the rotating plate 202 is horizontal.

[0045] The maximum unidirectional rotation angle of the rotating plate 202 is 5-15°. Before the rotating plate 202 starts to rotate upward, the horizontal and vertical limiting frame unit 3 has already risen together with the roller 12, thereby leaving upper space for the rotation of the bridge deck a.

[0046] The rotating plate 202 is provided with a sliding chamfered surface 203 for installing and removing the bridge deck a.

[0047] In this embodiment, the function of the sliding bevel surface 203 is to enable the rotating plate 202 to better fit the upper surface of the operating table b, thereby ensuring that the bridge deck a slides from the operating table b to the rotating plate 202 more smoothly.

[0048] The horizontal and vertical limiting frame unit 3 includes two vertical poles 301 respectively inserted into the fixed connection hole plate 103 and the lifting connection hole plate 104, a horizontal connecting plate 302 arranged on the two vertical poles 301, and a limiting groove 303 arranged on the side of the horizontal connecting plate 302 and used to insert the limiting block unit 4.

[0049] In this embodiment, the main body material of the horizontal and vertical limit frame unit 3 is light high-strength steel, and the test system does not need to vertically limit the horizontal and vertical limit frame unit 3 before and during use. Therefore, whether the counterweight block 6 on the limit block unit 4 is placed or the roller 12 is slightly flattened after placement is allowed to occur, and it does not affect the horizontal and vertical limit frame unit 3 to keep the roller 12 vertical.

[0050] Among them, two vertical poles 301 and one horizontal connecting plate 302 are integrally formed to form an inverted U-shaped overall frame structure. The vertical cross-sectional shape of the horizontal connecting plate 302 with the limiting groove 303 is a lateral U-shape, and the three side surfaces of the limiting groove 303 are always in contact with the limiting block unit 4, so that: the horizontal and vertical limiting frame unit 3 blocks and limits the limiting block unit 4 in the horizontal direction to prevent the roller 12 from deflecting, and allows the limiting block unit 4 to rise and fall in the vertical direction, that is, the counterweight block 6 can be placed more or less, and the roller 12 can be slightly deformed as long as it is not damaged.

[0051] The effect of "vertical limit" only occurs after the test is completed, that is, the rotating plate 202 needs to rotate and rise together with the bridge deck a, so the horizontal and vertical limit frame unit 3 together with the roller 12 is pre-raised and fixed to reserve upper space for the bridge deck a.

[0052] The above-mentioned "fixed" refers to the vertical limiting effect. At this time, the vertical rod 301 has been pulled up significantly, and it abuts against the upper surface of the fixed connection hole plate 103, thereby preventing the roller 12 from accidentally falling.

[0053] The horizontal and vertical limiting frame unit 3 also includes a supporting elastic ring 304 which is sleeved on one of the vertical poles 301 and is used to lift the roller 12 off the bridge deck a by abutting against the upper surface of the fixed connection hole plate 103.

[0054] In this embodiment, the supporting elastic ring 304 is one of the effective ways to achieve the above vertical limiting effect. When the test system is in use, the supporting elastic ring 304 is significantly away from the upper surface of the fixed connection hole plate 103 .

[0055] The material of the supporting elastic ring 304 is medium elastic rubber, and the supporting elastic ring 304 is not required to be provided on the vertical rod 301 on the lifting connecting hole plate 104. The materials of the connecting rod 11, the roller 12 and the limit block unit 4 are all made of light high-strength steel, so as to ensure that the force of the supporting elastic ring 304 clamping the vertical rod 301 is sufficient to support the force on the horizontal connecting plate 302.

[0056] On the other hand, the above-mentioned vertical limiting effect can also be achieved as follows: the vertical rod 301 on the fixed connection hole plate 103 is set as a screw rod, which is also plugged into the circular hole on the fixed connection hole plate 103, and the supporting elastic ring 304 is replaced by an internal threaded ring, which is screwed to the vertical rod 301, and the internal threaded ring can be stably supported on the upper surface of the fixed connection hole plate 103.

[0057] The limiting block unit 4 includes a load plate 401 hingedly arranged on the connecting rod 11 and provided with the roller 12 on the lower surface, and a lateral limiting insertion block 402 arranged on the load plate 401 and used for inserting into the limiting groove 303 .

[0058] In this embodiment, a counterweight baffle 403 and a connecting rod hinge seat 404 are also provided on the load plate 401. The former is used to prevent the counterweight 6 from falling, and the latter is used to hinge the connecting rod 11.

[0059] The lateral limit insert block 402 is always in contact with the three sides of the limit slot 303, and the two are fully engaged to ensure that the roller 12 is always vertical. On the other hand, the weight of the lateral and vertical limit frame unit 3 is also pressed on the roller 12. The former is essentially one of the counterweight parts on the load plate 401, so the counterweight block 6 can be placed less, which is more convenient and practical.

[0060] A method for using a wheeled rolling fatigue loading test system simulating a bridge deck structure, wherein a bridge deck a is replaced in sequence through the following steps: S1. After the test is completed, the transverse connecting plate 302 is lifted upwards, and the roller 12 is kept higher than the bridge deck a; S2, sliding the supporting elastic ring 304 downward on the vertical rod 301, so that the supporting elastic ring 304 abuts against the upper surface of the fixed connection hole plate 103, and releasing the lifting action on the horizontal connection plate 302; S3, lift the lifting connection hole plate 104 upward, so that the lifting block 5 tilts one side of the rotating plate 202, until the bridge deck a that has been tested slides off the rotating plate 202; S4. Maintain the tilt angle of the rotating plate 202, or further increase the tilt angle of the rotating plate 202, so that the rotating plate 202 abuts against the operating table b, so as to slide onto another bridge deck a to be tested. S5, lowering the lifting connection hole plate 104 until the rotating plate 202 is pressed on the high-position column 102 again; S6. Slide the supporting elastic ring 304 upward on the vertical pole 301 and lower the transverse connecting plate 302 at the same time until the roller 12 is pressed on the bridge deck a again.

[0061] In S1 , before the transverse connecting plate 302 is lifted upward, the counterweight block 6 on the limiting block unit 4 is first removed.

[0062] In this embodiment, if the counterweight 6 is used, it should be removed before the transverse connecting plate 302 is lifted upward, which can greatly reduce the support strength burden at the supporting elastic ring 304 and ultimately avoid the accident of the roller 12 falling off when the bridge deck a is replaced.

[0063] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A wheeled rolling fatigue loading test system for simulating a bridge deck structure, the structure comprising a connecting rod (11), a roller (12), and a bottom plate (13), characterized in that: It also includes a support frame unit (1) arranged on the bottom plate (13) and used to support the bridge deck (a), a rotating support plate unit (2) hingedly arranged on the support frame unit (1) and used to install and remove the bridge deck (a) by means of rotation, a horizontal and vertical limit frame unit (3) inserted on the support frame unit (1) and used to laterally block the roller (12), a limit block unit (4) arranged on the roller (12) and used to be inserted into the horizontal and vertical limit frame unit (3), and a lifting block (5) arranged on the support frame unit (1) and used to install and remove the bridge deck (a) by lifting the rotating support plate unit (2).

2. A wheel-type rolling fatigue loading test system for simulating a bridge deck structure according to claim 1, characterized in that: The support frame unit (1) comprises a low column (101) and a high column (102) respectively arranged at two side positions on the upper surface of the bottom plate (13), a fixed connection hole plate (103) arranged on the low column (101) and used for plugging the horizontal and vertical limiting frame unit (3), and a lifting connection hole plate (104) arranged on the high column (102), provided with the lifting block (5) and used for plugging the horizontal and vertical limiting frame unit (3).

3. A wheel-type rolling fatigue loading test system for simulating a bridge deck structure according to claim 2, characterized in that: The support frame unit (1) further comprises a vertical hole (105) arranged on the side of the high-position column (102) and used to laterally fix the lifting connection hole plate (104), and a transverse limit block (106) arranged on the lifting connection hole plate (104) and used to engage the vertical hole (105).

4. The wheel rolling fatigue loading test system for simulating a bridge deck structure according to claim 2, characterized in that: The rotating support plate unit (2) comprises an articulated block (201) arranged on the upper end surface of the low-position column (101), and a rotating plate (202) whose upper surface is arranged on the articulated block (201) and the high-position column (102), and on which a bridge deck (a) is provided, and which is used to receive the upward lifting action of the lifting block (5).

5. The wheel rolling fatigue loading test system for simulating a bridge deck structure according to claim 4, characterized in that: The rotating plate (202) is provided with a sliding chamfered surface (203) for installing and removing the bridge deck (a).

6. The wheel-type rolling fatigue loading test system for simulating a bridge deck structure according to claim 4, characterized in that: The horizontal and vertical limiting frame unit (3) comprises two vertical poles (301) respectively inserted into the fixed connection hole plate (103) and the lifting connection hole plate (104), a horizontal connecting plate (302) arranged on the two vertical poles (301), and a limiting groove (303) arranged on the side of the horizontal connecting plate (302) and used for inserting the limiting block unit (4).

7. The wheel-type rolling fatigue loading test system for simulating a bridge deck structure according to claim 6, characterized in that: The horizontal and vertical limiting frame unit (3) also includes a supporting elastic ring (304) which is sleeved on one of the vertical poles (301) and is used to lift the roller (12) off the bridge deck (a) by abutting against the upper surface of the fixed connection hole plate (103).

8. The wheel-type rolling fatigue loading test system for simulating a bridge deck structure according to claim 6, characterized in that: The limit block unit (4) comprises a load plate (401) hingedly arranged on the connecting rod (11) and provided with the roller (12) on the lower surface, and a transverse limit insertion block (402) arranged on the load plate (401) and used for inserting into the limit groove (303).

9. A method for using the wheel rolling fatigue loading test system for simulating a bridge deck structure as claimed in claim 7, characterized in that The bridge deck (a) is replaced by the following steps: S1. After the test is completed, the transverse connecting plate (302) is lifted upwards, and the roller (12) is kept higher than the bridge deck (a); S2, sliding the supporting elastic ring (304) downward on the vertical rod (301) so that the supporting elastic ring (304) abuts against the upper surface of the fixed connection hole plate (103), thereby releasing the lifting action on the horizontal connection plate (302); S3, lifting the lifting connection hole plate (104) upwards, so that the lifting block (5) lifts up one side of the rotating plate (202), until the bridge deck (a) that has been tested slides off the rotating plate (202); S4. Maintaining the inclination angle of the rotating plate (202), or further increasing the inclination angle of the rotating plate (202), so that the rotating plate (202) abuts against the operating table (b) for slidingly mounting another bridge deck (a) to be tested: S5, lowering the lifting connection hole plate (104) until the rotating plate (202) is pressed onto the high-position column (102) again; S6. Slide the supporting elastic ring (304) upward on the vertical pole (301) and simultaneously lower the transverse connecting plate (302) until the roller (12) is pressed against the bridge deck (a) again.

10. The method for using the wheel rolling fatigue loading test system for simulating a bridge deck structure according to claim 9, characterized in that: In S1, before the transverse connecting plate (302) is lifted upward, the counterweight block (6) on the limit block unit (4) is first removed.

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