An easily replaceable height-adjustable support structure and implementation method thereof

Abstract

The present invention discloses an easily replaceable and height-adjustable support structure and its implementation method, which belongs to the technical field of bridges and construction engineering. It is arranged between the foundation stone and the supported structure, and includes: a support body, a lower limit assembly and an upper limit assembly. The lower limit assembly forms a lower accommodating chamber on the periphery of the support body, and the upper limit assembly forms an upper accommodating chamber on the periphery of the support body; the lower accommodating chamber and the upper accommodating chamber are used to limit the horizontal movement of the support body, and the lower detachable stopper corresponds to the upper detachable stopper, and at least one side outlet is operably provided for the support body to be moved out or put in, thereby completing the replacement of the support body. The limit assembly in the support structure of the present invention effectively controls the horizontal uncontrollable sliding of the support body, greatly reduces the risk of falling beams in earthquakes, and provides a larger horizontal bearing capacity, thereby improving the anti-seismic ability of the support; at the same time, when the support structure replaces or adjusts the support body, the construction process is simple, safe and reliable, and has good economic benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridges and construction engineering, and in particular relates to an easily replaceable height-adjustable support structure and a method for realizing the same. Background Art

[0002] In bridges and building structures, bearings are the key connecting components between the superstructure and substructure, reliably transmitting the reaction forces and deformations (displacement and rotation) of the superstructure to the substructure, playing a significant role. Conventional plate rubber bearings are inexpensive, offer stable performance, and utilize mature technology. They exhibit elastic properties under earthquakes, effectively dispersing seismic forces and reducing potential structural damage. They are used in approximately 80% of small and medium-span bridges in my country, making them the most widely used bearing type in bridge engineering.

[0003] In bridges using plate rubber bearings, the beam is placed directly on the bearings. The horizontal constraint between the bearing rubber layer and the beam or pier top relies solely on friction, and there are no bearing limiters. Loads such as temperature, centrifugal force, vehicle braking force, and deadweight can cause the main beam to move with the bearings. In some cases, the bearings fail to return to their original positions. Over time, these deformations can accumulate, leading to significant horizontal deformation and even excessive slippage, placing the bearings in an unfavorable stress state and impacting their service life. Under earthquake conditions, although friction and slippage between the plate rubber bearings and the cap beam reduce the seismic forces acting on the piers and pile foundations, they can also lead to significant and unpredictable slippage, making it difficult to accurately and quantitatively design the dynamic response of the bridge structure under a major earthquake. This can lead to serious damage such as bearing failure, main beam displacement, and even beam fall.

[0004] In the related art, most support structures are to add connecting plates with bolts, anchor rods, etc. on the upper and lower parts of the support body, and set blocking blocks, tenons, cables and other limiting structures on the support connecting plates to realize the connection or limitation of the support body. This type of support structure is complex and costly. When the support is defective and needs to be replaced or raised, it is necessary to first chisel out part of the mortar layer, and then replace the new support and perform secondary grouting, which is labor-intensive and time-consuming. The process of replacing or raising the support requires the removal of all anchor bolts. However, due to space limitations, the bolts on the inside of the support are difficult to remove, and the original support needs to be cut or permanently damaged before it can be removed, which causes construction difficulties and has the disadvantages of high construction risk, high technical difficulty, and poor economic benefits.

[0005] Therefore, how to make the horizontal displacement of the commonly used bearing body controllable and the bearing capacity improved, while having the advantages of simple structure, reliable force transmission, and good economy, and overcome the shortcomings of the bearing composed of the most commonly used bolt-anchor rod anchoring system in replacement, maintenance and height adjustment functions, there is currently no better solution. Summary of the Invention

[0006] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides an easily replaceable height-adjustable support structure and an implementation method thereof.

[0007] The present invention adopts the following technical solution: an easily replaceable and height-adjustable support structure is provided between the foundation stone and the supported structure; the support structure comprises:

[0008] Support body;

[0009] A lower limit assembly is distributed around the periphery of the support body to form a lower accommodating cavity; the lower limit assembly includes: M fixed stoppers and N lower detachable stoppers provided on the foundation;

[0010] An upper limit assembly is distributed around the support body to form an upper accommodating cavity; the upper limit assembly includes: M fixed stoppers and N upper removable stoppers provided on the supported structure; wherein M+N=C, C is a preset constant value, C≥4, C≥N≥0, C≥M≥0;

[0011] The lower accommodating cavity and the upper accommodating cavity are used to limit the horizontal movement of the support body. The lower removable stopper corresponds to the upper removable stopper and can operably provide at least one side outlet for the support body to be moved out or put in, thereby completing the replacement of the support body.

[0012] In a further embodiment, the fixed stop comprises:

[0013] Several anchor bars are embedded in the corresponding foundation stones and supported structures;

[0014] The steel section is integrally formed with the anchor bar; the inner side surface of the steel section is parallel to the corresponding side surface of the support body; and the steel section is partially exposed to the corresponding foundation stone and the supported structure.

[0015] In a further embodiment, the lower removable blocking member comprises:

[0016] A lower anchoring piece is pre-buried in the foundation stone; the lower anchoring piece comprises: an integrally formed lower anchor bar and a lower steel piece; wherein the upper surface of the lower steel piece is recessed downward to a predetermined depth to form a lower groove;

[0017] The lower movable block is partially sleeved in the lower groove; the side surface of the lower movable block exposed outside the lower groove is parallel to the corresponding side surface of the support body.

[0018] In a further embodiment, the upper removable blocking member comprises:

[0019] An upper anchoring piece is pre-buried in the supported structure; the upper anchoring piece comprises: an upper anchor bar and an upper steel piece formed in one piece; wherein the lower surface of the upper steel piece is recessed upward by a predetermined depth to form an upper groove;

[0020] The upper movable block is partially embedded in the upper groove; the side surface of the upper movable block exposed outside the upper groove is parallel to the corresponding side surface of the support body.

[0021] In a further embodiment, the vertical cross-section of the lower groove is rectangular or inverted trapezoidal; correspondingly, the vertical cross-section of the area of ​​the lower movable block wrapped by the lower groove is rectangular or inverted trapezoidal.

[0022] In a further embodiment, the upper groove includes a first groove and a second groove identical thereto; wherein the vertical section of the first groove is an inverted trapezoid; correspondingly, the vertical section of the area of ​​the upper movable block wrapped by the first groove is an inverted trapezoid;

[0023] The vertical cross-section of the second groove is a rectangle or a regular trapezoid; the first groove is configured to position the upper movable block, and the second groove is configured to remove the upper movable block therefrom.

[0024] In a further embodiment, the support body is a structure having a main support, and is one of a rubber support, a polyurethane support, a pot support and a spherical steel support;

[0025] The pre-contact area of ​​the support body is wrapped with an elastic material, and the elastic material is one or more of a vulcanized rubber layer and a polyurethane; the pre-contact area is the area where the support body will contact or squeeze with the lower limit assembly and the upper limit assembly when in use.

[0026] In a further embodiment, a predetermined distance Δd1 is left between the pre-contact area and the lower limit assembly, providing space for the support body to slide relative to the foundation;

[0027] A predetermined distance Δd2 is left between the pre-contact area and the upper limit assembly, providing space for the support body to slide relative to the supported structure.

[0028] A method for implementing an easily replaceable height-adjustable support structure, based on the easily replaceable height-adjustable support structure described above, includes the following steps:

[0029] When the support body needs to be replaced, the supported structure is slightly lifted; the upper and lower removable blocks located on the same side are identified, and the corresponding upper and lower movable blocks in the upper and lower removable blocks are removed to form an exit on the designated side; the original support body is removed from the exit, and then a new support body is placed through the exit; the removed upper and lower movable blocks are reset, and the supported structure is lowered;

[0030] When the support body needs to be raised, the supported structure is lifted slightly; the upper and lower removable blocks located on the same side are determined, and the corresponding upper and lower movable blocks in the upper and lower removable blocks are taken out to form an outlet on the designated side; the original support body is removed from the outlet, and then the support body and the height-adjusting pad of a predetermined height are placed through the outlet; the upper and lower movable blocks that have been taken out are reset, and the supported structure is lowered.

[0031] In a further embodiment, the lower movable block is removed as follows: directly remove the lower movable block upward from the corresponding lower groove;

[0032] The upper movable block is taken out in the following manner: each upper movable block is sequentially slid from the corresponding first groove to the second groove, and then the upper movable block located in the second groove is taken out downwards.

[0033] The present invention provides the following beneficial effects: Lower and upper limit assemblies are provided around the periphery of the support body, each of which includes fixed stops. These lower and upper limit assemblies restrict the support body from sliding horizontally, creating a stable support structure with controlled sliding. By adjusting the gaps Δd1 and Δd2 between the support body and the lower and upper limit assemblies, respectively, the support can also achieve reliable sliding energy dissipation.

[0034] The lower and upper limiter assemblies of the present invention offer flexible assembly and disassembly, making the support easier to install and replace. The height of the support can be adjusted by placing a height adjustment pad below or above the support body, significantly alleviating the risk of the support becoming empty during installation and operation.

[0035] The limiting structure adopted by the support of this technical solution is compared with the conventional support connecting plate with bolts and anchor rods, and the limiting structure with blocks, tenons, cables, etc. set on the support connecting plate. It has the characteristics of simple structure, good economy and easy construction.

[0036] It can effectively reduce the defects of traditional plate rubber bearings, greatly reduce the risk of falling beams, and significantly improve the seismic safety of bridge structures. At the same time, it can improve the problems of currently commonly used bridge bearings such as pot bearings, spherical bearings, seismic isolation rubber bearings and pier beams, such as complex connection structure, high cost, difficulty in replacement, and general inability to adjust. It has important engineering practicality and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural diagram of the easily replaceable height-adjustable support structure in Example 1.

[0038] Figure 2 This is a cross-sectional view of the easily replaceable height-adjustable support structure in Example 1.

[0039] Figure 3 This is a schematic diagram of the lower limit assembly structure in Example 1.

[0040] Figure 4 This is a schematic diagram of the upper limit component structure in Example 1.

[0041] Figure 5 Schematic diagram of the fixed stop structure in Example 1.

[0042] Figure 6 This is a disassembled diagram of the lower detachable blocking part in Example 1.

[0043] Figure 7 This is a disassembled diagram of the upper detachable blocking part in Example 1.

[0044] Figure 8 This is a structural diagram of the support body in Example 2.

[0045] Figure 9 This is a structural diagram of the height adjustment pad in Example 3.

[0046] Figure 10 This is a structural diagram of the easily replaceable height-adjustable support in Example 3 after the support body is adjusted in height.

[0047] Figure 11 Schematic diagram of the structure of different fixed stops in Example 4.

[0048] Figure 12 This is a structural diagram of embodiment 5 in which all lower limit components are configured as detachable stoppers.

[0049] Figures 1 to 12 The markings in it are: pad stone 1, support body 2, beam body 3, lower limit assembly 4, upper limit assembly 5, fixed stopper 6, height adjustment pad 7, pre-contact area 21, lower removable stopper 41, lower anchor 411, lower movable block 412, lower steel part 4111, lower anchor bar 4112, upper removable stopper 51, upper anchor 511, upper steel part 5111, first groove 51111, second groove 51112, upper anchor bar 5112, upper movable block 512, steel section 61, anchor bar 62. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0051] like Figure 1 As shown, an easily replaceable, height-adjustable support structure is installed between the foundation and the supported structure. In this embodiment, the foundation is a pad stone 1, and the supported structure can be a supporting bridge or other building structure. The following uses a beam 3 as an example. It should be noted that the support body 2 is a structure with a main support structure and can be one of a rubber bearing, a polyurethane bearing, a pot bearing, and a spherical steel bearing 61.

[0052] The support body 2 further comprises a lower stopper assembly 4 distributed around the bottom of the support body 2 to form a lower accommodation cavity, wherein the lower stopper assembly 4 comprises M fixed stoppers and N lower detachable stoppers 41 provided on the foundation.

[0053] The upper limit assembly 5 distributed around the bottom of the support body 2 forms an upper accommodating cavity. The upper limit assembly 5 includes: M fixed blocks and N upper removable blocks 51 provided on the supported structure. M+N=C, C is a preset constant value, C≥4, C≥N≥0, C≥M≥0. C is preset to four, that is, M+N=4. Regarding the values ​​of M and N, it can be understood that the current upper limit assembly 5 or lower limit assembly 4 can be all fixed blocks, or all upper removable blocks 51 or lower removable blocks 41, or two of them can be fixed blocks and the other two can be upper removable blocks 51 or lower removable blocks 41.

[0054] Further, combined Figures 1 to 3 The lower limit assembly 4 includes three fixed stoppers and a lower removable stopper 41 provided on the foundation. In other words, the three fixed stoppers are respectively arranged on the three outer sides of the support body 2, and the lower removable stopper 41 is arranged on the remaining outer side of the support body 2. Figure 1 、 Figure 2 and Figure 4 The upper limit assembly 5 includes three fixed stoppers and one upper removable stopper 51, mounted on the foundation. In other words, the three fixed stoppers are located on three outer sides of the support body 2, while the upper removable stopper 51 is located on the remaining outer side of the support body 2. The upper removable stopper 51 and the lower removable stopper 41 are located on the same side of the support body 2.

[0055] Therefore, no matter what the values ​​of M and N are, the following requirements are met: the lower accommodating chamber and the upper accommodating chamber are used to limit the movement of the support body 2 in any direction in the horizontal plane, the lower removable stopper 41 and the upper removable stopper 51 correspond to each other, and at least one side outlet is operably provided for the support body 2 to be moved out or put in, thereby completing the replacement of the support body 2.

[0056] Combine Figure 5In this embodiment, the fixed stopper 6 comprises several anchor bars 62 embedded in the corresponding foundation stone and supported structure, and a steel section 61 integrally formed with the anchor bars 62. In this embodiment, the steel section 61 and anchor bars 62 are welded together. The inner side of the steel section 61 is parallel to the corresponding side surface of the support body 2. Part of the steel section 61 is exposed in the corresponding foundation stone and supported structure, and is used to abut against the support body 2, restraining the support body 2 in a specific direction.

[0057] like Figure 3 and Figure 6 , the lower removable stopper 41 in this embodiment includes: a lower anchor 411 embedded in the cushion stone 1. Among them, the lower anchor 411 includes: a lower anchor rib 4112 and a lower steel part 4111 formed as one piece by welding; the upper surface of the lower steel part 4111 is recessed downward by a predetermined depth to form a lower groove. It also includes: a lower movable block 412 partially sleeved in the lower groove, and the side of the lower movable block 412 exposed outside the lower groove is parallel to the corresponding side of the support body 2. That is, the lower movable block 412 exposed outside the lower groove is used to abut against the support body 2 and limit the support body 2 in a specified direction. In a further embodiment, the vertical section of the lower groove is rectangular or inverted trapezoidal; correspondingly, the vertical section of the area of ​​the lower movable block 412 wrapped by the lower groove corresponds to a rectangle or an inverted trapezoid. It is convenient to directly remove the lower movable block 412 from the lower groove.

[0058] Combine Figure 4 and Figure 7 In this embodiment, the upper removable stopper 51 comprises an upper anchor 511 embedded within the bridge. The upper anchor 511 comprises an upper anchor bar 5112 and an upper steel member 5111, formed integrally by welding. The lower surface of the upper steel member 5111 is recessed upward to a predetermined depth to form an upper groove. The upper stopper 5111 also comprises a plurality of upper movable blocks 512 partially embedded within the upper groove. The sides of the upper movable blocks 512 exposed outside the groove are parallel to the corresponding sides of the support body 2. In a further embodiment, in order to ensure that the upper movable block 512 does not fall out of the upper groove of the upper steel part 5111 under the action of gravity, the upper groove includes a first groove 51111 and an identical second groove 51112; wherein, the vertical cross-section of the first groove 51111 is an inverted trapezoid; correspondingly, the vertical cross-section of the area of ​​the upper movable block 512 wrapped by the first groove 51111 is an inverted trapezoid; the vertical cross-section of the second groove 51112 is a rectangle or a regular trapezoid; the first groove 51111 is configured to position the upper movable block 512, and the second groove 51112 is configured to remove the upper movable block 512 therefrom. In other words, when the upper movable block 512 needs to be removed from the first groove 51111, it is first slid from the first groove 51111 into the second groove 51112, and then removed downward. Therefore, in this embodiment, the volume of each upper movable block 512 is smaller than the volume of the second groove 51112. Example 2

[0059] like Figure 8 As shown, in this embodiment, the pre-contact area 21 of the support body 2 is coated with an elastic material, which is one or more of a vulcanized rubber layer and a polyurethane layer. The pre-contact area 21 is the area where the support body 2 will come into contact or be squeezed with the lower limit assembly 4 and the upper limit assembly 5 during use. The elastic material coating the pre-contact area 21 alleviates and protects against squeezing.

[0060] Recombination Figure 2 and Figure 8 A predetermined distance Δd1 is left between the pre-contact area 21 and the lower limit assembly 4, providing space for the support body 2 to slide relative to the foundation. A predetermined distance Δd2 is left between the pre-contact area 21 and the upper limit assembly 5, providing space for the support body 2 to slide relative to the supported structure. This facilitates adjustment of the horizontal installation position of the support body 2.

[0061] It should be noted that when a larger sliding amount is required between the support body 2 and the pad stone 1 so that the support structure has a sliding energy dissipation function, the embodiment can design Δd1 to a larger value, and the value can be designed with reference to the relative sliding amount allowed between the two.

[0062] In another embodiment, when a larger sliding amount is required between the support body 2 and the beam body 3 so that the support structure has a sliding energy dissipation function, the embodiment can design Δd2 to be a larger value, and the value can be designed with reference to the relative sliding amount allowed between the two. Example 3

[0063] like Figure 9 and Figure 10 When the support body 2 needs to be replaced, the beam 3 is slightly lifted while the lower movable block 412 in the lower removable stopper 41 and the upper movable block 512 in the upper removable stopper 51 are removed, forming a side exit. This exit provides a location for removing the original support body 2. The new support body 2 is then inserted through this exit, and the removed lower and upper movable blocks 412, 512 are repositioned and the beam is lowered, completing the replacement of the support body 2.

[0064] If the support body 2 needs to be raised, the beam 3 is slightly lifted while the lower movable block 412 of the lower removable stopper 41 and the upper movable block 512 of the upper removable stopper 51 are removed, forming a side exit. This exit provides a location for the original support body 2 to be removed. The support body 2 and the height adjustment pad 7 of the desired height are then inserted through this exit. The removed lower and upper movable blocks 412, 512 are then reset and the beam is lowered, completing the height adjustment of the support body 2. Example 4

[0065] In this embodiment, the fixed stopper 6 can also be a square stopper, an H-shaped stopper, an L-shaped stopper, a C-shaped stopper, etc., or a truncated steel 61 (H-shaped, L-shaped, channel steel, etc.) can be directly used to bury it in the pad stone 1 to realize the structure of the fixed stopper 6. Figure 11 shown. Example 5

[0066] Based on the description of Example 1, in this embodiment, M=0, N=4; that is, the lower limit components 4 are all lower removable stoppers 41, and the upper limit components 5 are all upper removable stoppers 51. Figure 12 shown.

[0067] In another embodiment, fixed stops 6 are arranged all around the support body 2 as the lower limit assembly 4, and fixed stops 6 are arranged all around the support body 2 as the upper limit assembly 5, that is, M=4, N=0. In this embodiment, when the support needs to be raised, the original fixed stops 6 can be removed or the beam body 3 can be lifted to a sufficient height to form an outlet for the support body 2 to be moved out of the working position. Then, a new support body 2 and a height adjustment pad 7 of a predetermined height can be placed, and then a new fixed stop 6 or upper removable stop 51 or lower removable stop 41 structure can be installed to complete the height adjustment process of the support body 2.

[0068] In summary, with the help of the above technical solution of the present invention, the problem of uncontrollable displacement of the support body 2 and the problems of high construction risk, high technical difficulty and poor economic benefits when replacing and raising the support body 2 in related technologies can be solved. Example 6

[0069] Based on the easily replaceable and height-adjustable support structure described in Examples 1 to 5, this embodiment provides a method for implementing the easily replaceable and height-adjustable support structure, including the following steps:

[0070] When the support body needs to be replaced, the supported structure is slightly lifted; the upper and lower removable blocks located on the same side are identified, and the corresponding upper and lower movable blocks in the upper and lower removable blocks are removed to form an exit on the designated side; the original support body is removed from the exit, and then a new support body is placed through the exit; the removed upper and lower movable blocks are reset, and the supported structure is lowered;

[0071] When the support body needs to be raised, the supported structure is lifted slightly; the upper and lower removable blocks located on the same side are determined, and the corresponding upper and lower movable blocks in the upper and lower removable blocks are taken out to form an outlet on the designated side; the original support body is removed from the outlet, and then the support body and the height-adjusting pad of a predetermined height are placed through the outlet; the upper and lower movable blocks that have been taken out are reset, and the supported structure is lowered.

[0072] In a further embodiment, the lower movable block is removed as follows: directly remove the lower movable block upward from the corresponding lower groove;

[0073] The upper movable block is taken out in the following manner: each upper movable block is sequentially slid from the corresponding first groove to the second groove, and then the upper movable block located in the second groove is taken out downwards.

[0074] During use, it can effectively prevent the bearing body from being displaced from the safe bearing position by the side load. It can be especially used for the plate rubber bearing body structure which is the most widely used in existing small and medium span highway bridges. It can greatly reduce the plate rubber bearing slippage, air loss, shear limit exceeding, beam falling and other diseases, and improve its seismic isolation capacity and the safety of structures such as bridges under earthquakes.

[0075] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An easily replaceable height-adjustable support structure, provided between the foundation stone and the supported structure; characterized in that: The support structure comprises: Support body; The lower limit assembly is distributed around the periphery of the support body to form a lower accommodating cavity; the lower limit assembly includes: M fixed stoppers and N lower removable stoppers provided on the foundation; the lower removable stoppers include: A lower anchoring piece is pre-buried in the foundation stone; the lower anchoring piece comprises: an integrally formed lower anchor bar and a lower steel piece; wherein the upper surface of the lower steel piece is recessed downward to a predetermined depth to form a lower groove; The lower movable block is partially sleeved in the lower groove; the side surface of the lower movable block exposed outside the lower groove is parallel to the corresponding side surface of the support body; An upper limit assembly is distributed around the support body to form an upper accommodating cavity; the upper limit assembly includes: M fixed stops and N upper removable stops provided on the supported structure; wherein M+N=C, C is a preset constant value, C≥4, C≥N≥0, C≥M≥0; the upper removable stops include: An upper anchoring piece is pre-buried in the supported structure; the upper anchoring piece comprises: an upper anchor bar and an upper steel piece formed in one piece; wherein the lower surface of the upper steel piece is recessed upward by a predetermined depth to form an upper groove; A plurality of upper movable blocks are partially embedded in the upper groove; the side surfaces of the upper movable blocks exposed outside the upper groove are parallel to the corresponding side surfaces of the support body; The lower accommodating cavity and the upper accommodating cavity are used to limit the horizontal movement of the support body. The lower removable stopper corresponds to the upper removable stopper and can operably provide at least one side outlet for the support body to be moved out or put in, thereby completing the replacement of the support body.

2. The easily replaceable height-adjustable support structure according to claim 1, characterized in that: The fixed stopper comprises: Several anchor bars are embedded in the corresponding foundation stones and supported structures; The steel section is integrally formed with the anchor bar; the inner side surface of the steel section is parallel to the corresponding side surface of the support body; and the steel section is partially exposed to the corresponding foundation stone and the supported structure.

3. The easily replaceable height-adjustable support structure according to claim 1, characterized in that: The vertical cross-section of the lower groove is rectangular or inverted trapezoidal; correspondingly, the vertical cross-section of the area of ​​the lower movable block wrapped by the lower groove is rectangular or inverted trapezoidal.

4. The easily replaceable height-adjustable support structure according to claim 1, characterized in that: The upper groove includes a first groove and a second groove identical thereto; wherein the vertical section of the first groove is an inverted trapezoid; correspondingly, the vertical section of the area of ​​the upper movable block wrapped by the first groove is an inverted trapezoid; The vertical cross-section of the second groove is a rectangle or a regular trapezoid; the first groove is configured to position the upper movable block, and the second groove is configured to remove the upper movable block therefrom.

5. The easily replaceable height-adjustable support structure according to claim 1, characterized in that: The support body is a structure with a main support, which is one of a rubber support, a polyurethane support, a pot support and a spherical steel support; The pre-contact area of ​​the support body is wrapped with an elastic material, and the elastic material is one or more of a vulcanized rubber layer and a polyurethane; the pre-contact area is the area where the support body will contact or squeeze with the lower limit assembly and the upper limit assembly when in use.

6. The easily replaceable height-adjustable support structure according to claim 5, characterized in that: A predetermined distance Δd1 is left between the pre-contact area and the lower limit assembly, providing space for the support body to slide relative to the foundation; A predetermined distance Δd2 is left between the pre-contact area and the upper limit assembly, providing space for the support body to slide relative to the supported structure.

7. A method for implementing an easily replaceable height-adjustable support structure, based on the easily replaceable height-adjustable support structure according to any one of claims 1 to 6, characterized in that: The following steps are involved: When the support body needs to be replaced, the supported structure is lifted slightly; the upper and lower removable blocks located on the same side are identified, and the corresponding upper and lower movable blocks in the upper and lower removable blocks are removed to form an exit on the designated side; The original support body is removed from the outlet, and then a new support body is placed through the outlet; the removed upper and lower movable blocks are reset, and the supported structure is lowered; When the support body needs to be raised, the supported structure is lifted slightly; the upper and lower removable blocks located on the same side are determined, and the corresponding upper and lower movable blocks in the upper and lower removable blocks are removed to form an exit on the designated side; The original support body is removed from the outlet, and then the support body and a height-adjusting pad of a predetermined height are placed through the outlet; the upper movable block and the lower movable block that are removed are reset, and the supported structure is lowered.

8. The method for realizing an easily replaceable height-adjustable support structure according to claim 7, characterized in that: The method of removing the lower movable block is as follows: directly remove the lower movable block upward from the corresponding lower groove; The upper movable block is taken out in the following manner: each upper movable block is sequentially slid from the corresponding first groove to the second groove, and then the upper movable block located in the second groove is taken out downwards.

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