Porous elastic displacement adjusting device

Abstract

A void-free elastic displacement adjusting device comprises a first component installed in a first beam body installation notch and a second component installed in a second beam body installation notch, the first component and the second component are distributed in the longitudinal direction of a bridge and can move relatively, the first component is a seam crossing side cross beam, and the second component is a fixed side cross beam. Bearing sliding blocks are arranged on the cross-seam side cross beam and the fixed side cross beam at intervals and can longitudinally move relative to the cross-seam side cross beam and the fixed side cross beam, and an elastic piece is elastically arranged between every two adjacent bearing sliding blocks in an abutting mode. The bearing sliding block of the void-free elastic displacement adjusting device can longitudinally move relative to the cross joint side cross beam and the fixed side cross beam, when a bridge longitudinally moves, the bearing sliding block can evenly distribute telescopic displacement of a beam body to the whole expansion joint area through the elastic piece, and even distribution of the displacement amount of the expansion joint is achieved; the defect that the seamless expansion joint protrudes and sinks under high and low temperature conditions is overcome, and therefore the service life of the elastic body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, in particular to a non-porous elastic displacement regulating device. Background Art

[0002] During the operation of bridge projects, creep and wind effects caused by vehicle loads, the bridge's own materials and temperature can cause deformations such as contraction and elongation. Bridge expansion devices are one of the important functional components of bridge projects to meet the requirements of bridge deformation. Bridge expansion devices are usually installed between bridges and between bridges and abutments. In order to ensure safe and smooth driving of vehicles, the expansion devices installed on the bridge must meet the various changes in the beam body. Ordinary expansion joints can be observed from the outside as wider gaps, while seamless expansion joints are an integral expansion structure used on roads and bridges, and the specific structure cannot be observed from the outside. Traditional seamless expansion joints replace a narrow strip of bridge deck pavement above the joint with a special asphalt mixture with high elasticity. They are generally used on bridges with a design temperature gap of less than 50mm. They are not suitable for bridges with large traffic volume and large spans. For example, the Chinese invention patent No. 201710249503.6 (authorization publication No. CN 106906716B) discloses a "combined seamless expansion joint structure for bridge pavement structures." The expansion joint structure includes a cross-joint steel plate arranged across the expansion joint, an elastic telescopic member located between two pavement structures, and a self-leveling mortar base layer laid on both sides of the top surface of the expansion joint on the bottom surface of the cross-joint steel plate. The elastic telescopic member covers the cross-joint steel plate and the self-leveling mortar base layer. Two longitudinal installation grooves are provided on both sides of the bottom of the elastic telescopic member, and fiber rods are provided in the installation grooves. An anchoring joint is reserved between the elastic telescopic member and the pavement structure. The anchoring joint and the installation groove on the same side are connected together through a connecting groove located on the bottom surface of the elastic telescopic member. The anchoring joint, the connecting groove, and the installation groove are all filled with flexible structural adhesive. While this seamless expansion joint structure exhibits low-temperature toughness, high-speed deformation and rebound properties under heavy pressure, and is simple and easy to construct, it also presents certain challenges in extreme weather conditions. For example, in hot weather, the seamless expansion joint can be squeezed and bulge; in cold weather, it can stretch and collapse, both of which can affect driving comfort and safety. Furthermore, after prolonged high- and low-temperature cycling, conventional seamless expansion joints can easily separate from the road surface connection, leading to joint leakage. Consequently, further improvements to existing seamless expansion joint structures are needed. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a non-porous elastic displacement adjustment device capable of evenly distributing the displacement of an expansion joint to the entire expansion joint area in response to the above-mentioned existing technical status.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a pore-free elastic displacement adjustment device, including a first component installed in the installation groove of the first beam body and a second component installed in the installation groove of the second beam body, the first component and the second component are distributed along the longitudinal direction of the bridge and can move relative to each other, and is characterized in that: the first component is a span side cross beam, the second component is a fixed side cross beam, and load-bearing sliders are arranged at intervals on the span side cross beam and the fixed side cross beam, and the load-bearing sliders can move longitudinally relative to the span side cross beam and the fixed side cross beam, and elastic parts are elastically abutted between adjacent load-bearing sliders.

[0005] The load-bearing slider has various configurations. A preferred embodiment comprises a first slider that is invertedly attached to the cross-gap-side beam and the fixed-side beam. The first slider is a U-shaped member with a first waist-shaped hole formed in each of the cross-gap-side beam and the fixed-side beam. Mounting holes are formed on the opposing side walls of the first slider. First bolts pass through the mounting holes and the first waist-shaped hole, providing longitudinal sliding space for the first slider. In this manner, the load-bearing slider is movably connected to the cross-gap-side beam and the fixed-side beam and can move longitudinally relative to each other.

[0006] In order to enable the span side cross beam and the fixed side cross beam to move relative longitudinally, the span side cross beam and the fixed side cross beam have butt ends that butt against each other, and a second waist-shaped hole is opened on the butt ends. The second bolt passes through the second waist-shaped hole to connect the span side cross beam and the fixed side cross beam together.

[0007] To enable the elastic displacement adjustment device to have a vertical rotation function, the butt end of the span-side crossbeam is formed with a cutout portion, and the butt end of the fixed-side crossbeam is formed with a groove. Alternatively, the butt end of the span-side crossbeam is formed with a groove, and the butt end of the fixed-side crossbeam is formed with a cutout portion, and the cutout portion is inserted into the groove. A circumferential movable gap is provided between the second bolt and the second waist-shaped hole. In this way, the second bolt becomes a rotating bolt, which can adapt to the vertical rotation function of the bridge.

[0008] As another preferred embodiment of the load-bearing slider, the sidewalls of the cross-gap-side beam and the fixed-side beam are provided with sliding grooves. The load-bearing slider is a second slider that is invertedly buckled onto the cross-gap-side beam and the fixed-side beam. Both ends of the second slider have locking blocks that are movably embedded in the sliding grooves. With this arrangement, the locking blocks of the load-bearing slider engage the sliding grooves, allowing the load-bearing slider to be retained on the cross-gap-side beam and the fixed-side beam, and to move longitudinally relative to each other.

[0009] The elastic member can have various structures. Preferably, the elastic member is a first spring sleeved on the cross-slot side beam and the fixed side beam, and both ends of the first spring elastically abut against the corresponding bearing sliders.

[0010] As another preferred embodiment of the elastic member, the elastic member is a second spring, which is arranged on both sides of the cross-slit side beam and both sides of the fixed side beam, and both ends of the second spring are respectively limited and elastically supported on the corresponding load-bearing slider.

[0011] As another preferred embodiment of the elastic member, the elastic member is an elastic splint, which is arranged on both sides of the cross-seam side beam and both sides of the fixed side beam, and both ends of the elastic splint are respectively limited and elastically supported on the corresponding load-bearing slider.

[0012] To support the cross-joint side beams and the fixed side beams, support ribs are provided below the cross-joint side beams and the fixed side beams. The bottoms of the support ribs are fixed to the mounting notches of the first and second beam bodies. The support ribs on the first beam body are fixed to the cross-joint side beams, while the tops of the support ribs on the second beam body are provided with guide grooves for the longitudinal sliding of the cross-joint side beams. The provision of the guide grooves ensures the sliding direction of the cross-joint side beams.

[0013] To adjust the span-side and fixed-side crossbeams to the appropriate height, the first beam mounting slots contain height-adjusting components for the span-side crossbeams, while the second beam mounting slots contain height-adjusting components for the fixed-side crossbeams. This arrangement allows the relative height of the entire system to be adjusted based on the road surface, ensuring that the top surface of the load-bearing sliders meets standard flatness requirements relative to the bridge surface.

[0014] In order to fix the height adjustment component on the beam body, embedded steel plates are installed in the first beam body installation groove and the second beam body installation groove, and the bottom of the height adjustment component is fixed on the embedded steel plates.

[0015] It is further preferred that a concrete layer is cast on the embedded steel plate, the concrete layer is located below the span side beam and the fixed side beam, and an elastic filler layer is cast above the concrete layer, and the upper surface of the elastic filler layer is lower than the upper surface of the load-bearing slider.

[0016] More preferably, the elastic sealing material used in the elastic filler layer is mainly various applicable polymer materials, not limited to polyurethane materials, and mainly plays a water-tight role. The elastic filler layer has the advantages of good sealing and waterproofing properties and acid and alkali corrosion resistance.

[0017] The height adjustment component can adopt a variety of structures. Preferably, the height adjustment component is a T-shaped steel plate, the bottom of the T-shaped steel plate is welded and fixed to the embedded steel plate, and the outer side of the T-shaped steel plate is welded and fixed with an anti-collision baffle, and the outer ends of the cross-seam side beams and the fixed side beams are against or fixed on the anti-collision baffle.

[0018] As another preferred solution, the load-bearing slider is an annular slider sleeved on the span side beam and the fixed side beam.

[0019] In order to enable the elastic displacement adjustment device to distribute the expansion and contraction displacement more evenly throughout the expansion joint area, the plurality of span-joint side crossbeams are evenly spaced along the width of the bridge, and the fixed side crossbeams correspond to the span-joint side crossbeams one-to-one and are evenly spaced along the width of the bridge. Compared with the prior art, the advantages of the present invention are that the non-porous elastic displacement adjustment device is provided with load-bearing sliders that can move longitudinally relative to the crossbeams at intervals on both the span-joint side crossbeams and the fixed side crossbeams, and elastic members are elastically supported between adjacent load-bearing sliders. Thus, when the bridge moves longitudinally, the load-bearing sliders can evenly distribute the expansion and contraction displacement of the beam body through the elastic members to achieve uniform distribution of the expansion joint displacement, solve the defects of bulges and depressions in seamless expansion joints under high and low temperature conditions, thereby improving the service life of the elastic member. At the same time, the displacement adjustment device has the advantages of simple construction, good driving comfort, environmental protection, low noise, and simple maintenance, and can be used on bridges with large expansion and contraction amounts and heavy traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a non-porous elastic displacement adjustment device according to a first embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A top view of the non-porous elastic displacement adjustment device shown;

[0022] Figure 3 for Figure 1 A structural cross-sectional view of the non-porous elastic displacement adjustment device shown;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0024] Figure 5 for Figure 4 BB cross-sectional view;

[0025] Figure 6 This is another structural cross-sectional view of the first embodiment of the present utility model;

[0026] Figure 7 This is a schematic structural diagram of a non-porous elastic displacement adjustment device according to a second embodiment of the present utility model;

[0027] Figure 8 This is a schematic structural diagram of a non-porous elastic displacement adjustment device according to a third embodiment of the present invention;

[0028] Figure 9 This is a schematic structural diagram of a non-porous elastic displacement adjustment device according to a fourth embodiment of the present utility model;

[0029] Figure 10 Figure 9 A structural cross-sectional view of the non-porous elastic displacement adjustment device shown;

[0030] Figure 11 for Figure 10 CC sectional view;

[0031] Figure 12 for Figure 10 An enlarged schematic diagram of part D in the middle;

[0032] Figure 13 for Figure 12 EE cross-sectional view;

[0033] Figure 14 for Figure 13 FF cross-sectional view;

[0034] Figure 15 This is a schematic structural diagram of a non-porous elastic displacement adjustment device according to a fifth embodiment of the present utility model;

[0035] Figure 16 for Figure 15 GG cross-sectional view. DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0037] Example 1:

[0038] like Figures 1 to 5 As shown, the non-porous elastic displacement adjustment device of this embodiment includes a first component mounted in a first beam mounting slot 101 and a second component mounted in a second beam mounting slot 102. Specifically, the first component is a span-joint crossbeam 11, and the second component is a fixed crossbeam 12. The span-joint crossbeams 11 and the fixed crossbeams 12 are distributed longitudinally along the bridge and can move relative to each other longitudinally. There are multiple span-joint crossbeams 11, evenly spaced across the width of the bridge. The fixed crossbeams 12 correspond one-to-one with the span-joint crossbeams 11 and are evenly spaced across the width of the bridge. The span-joint crossbeams 11 and the fixed crossbeams 12 form a crossbeam assembly, primarily constructed of square steel, which primarily serves as a vertical load-bearing mechanism. Load-bearing sliders are spaced apart on each of the span-joint crossbeams 11 and the fixed crossbeam 12. The load-bearing sliders can move longitudinally relative to the span-joint crossbeams 11 and the fixed crossbeam 12. The crossbeam assembly is equipped with stainless steel slides within the sliding range of each corresponding load-bearing slider.

[0039] In this embodiment, the load-bearing slider is a first slider 21 that is inverted on the cross-gap side beam 11 and the fixed side beam 12. The first slider 21 is a U-shaped member, and the top surface of the first slider 21 is flush with the road surface, providing vertical support and effectively extending the service life of the telescopic structure. A first waist-shaped hole 13 is formed in the cross-gap side beam 11 and the fixed side beam 12 to provide sliding space for the first slider 21. Mounting holes 211 are formed on the opposite side walls of the first slider 21. A first bolt 41 passes through the mounting hole 211 and the first waist-shaped hole 13, providing longitudinal sliding space for the first slider 21. The first bolt 41 constitutes a connecting bolt that only serves as a sliding limiter and does not provide support or force-bearing function.

[0040] The cross-joint side beam 11 and the fixed side beam 12 have butt-jointed ends that are butted against each other, each with a second waist-shaped hole 14. The second bolt 42 passes through the second waist-shaped hole 14 to connect the cross-joint side beam 11 and the fixed side beam 12 together. In this embodiment, the butt-joint end of the cross-joint side beam 11 is formed with a cutout 15, and the butt-joint end of the fixed side beam 12 is formed with a groove 16. The cutout 15 is inserted into the groove 16. When the beam body performs telescopic movement, the cross-joint side beam 11 can slide in the groove 16 of the fixed side beam 12, thereby achieving longitudinal displacement. In addition, there is a circumferential movable gap between the second bolt 42 and the second waist-shaped hole 14, and the second bolt forms a rotating bolt that can adapt to the vertical rotation function of the bridge. The rotating shaft bolt can not only enable the first slider 21 to slide on the fixed side beam 12, but also connect the cross-joint side beam 11 and the fixed side beam 12 as a whole. Thus, a rotating structure is formed between the cross-joint beam 11 and the fixed cross-joint beam 12 of this embodiment. When the bridge undergoes vertical rotation, this rotating structure is used to achieve rotation. This embodiment is not limited to a single rotating structure. For complex and variable beam structures, two or more rotating structures can be provided, thereby increasing the product's rotation capability. Furthermore, the ends of the first bolt 41 and the second bolt 42 are both connected and fixed by nuts 43.

[0041] Elastic parts are elastically supported between adjacent load-bearing sliders, and the elastic parts constitute an elastic distribution component. The elastic part of this embodiment is a first spring 31 that is sleeved on the span side crossbeam 11 and the fixed side crossbeam 12. The two ends of the first spring 31 elastically rest on the corresponding load-bearing slider, i.e., the first slider 21. The first spring 31 mainly plays the role of evenly distributing the longitudinal displacement of the beam body to the entire expansion joint area. The entire product is pre-stressed before leaving the factory, that is, each first slider 21 is subjected to an equal spring force before leaving the factory. When the bridge produces longitudinal displacement, the span side crossbeam 11 will expand and contract relative to the fixed side crossbeam 12, and the expansion and contraction displacement is distributed through the first spring 31, so that the load-bearing slider, i.e., the first slider 21, automatically slides and evenly distributes the expansion and contraction displacement to the entire expansion joint area.

[0042] Support ribs 5 are provided below the cross-gap side beams 11 and the fixed side beams 12. The bottoms of the support ribs 5 are fixed within the first beam body mounting notches 101 and the second beam body mounting notches 102. The support ribs 5 also serve as height adjustment components. In this embodiment, embedded steel plates 6 are installed within the first beam body mounting notches 101 and the second beam body mounting notches 102. The bottoms of the support ribs 5 are welded and fixed to the embedded steel plates 6 via welded steel plates 61. In addition, the support ribs 5 on the first beam body mounting notches 101 are fixed to the cross-gap side beams 11, while the tops of the support ribs 5 on the second beam body mounting notches 102 are provided with guide grooves 51 for the longitudinal sliding of the cross-gap side beams 11. The guide grooves 51 guide the sliding of the cross-gap side beams 11.

[0043] In addition, the height adjustment component of this embodiment also includes a T-shaped steel plate 7, and the bottom of the T-shaped steel plate 7 is welded and fixed to the embedded steel plate 6. The supporting ribs 5 and the T-shaped steel plate 7 both play a role in height adjustment, and the relative height of the entire product is adjusted according to the height of the road surface, so that the flatness of the top surface of the load-bearing slider, i.e., the first slider 21, and the bridge surface meet the standard requirements, and then welding and fastening are performed, and the product is fixed to the beam body with the welded steel plate 51 and the T-shaped steel plate 7 to complete the installation of the product. An anti-collision baffle 8 is welded and fixed to the outer side of the T-shaped steel plate 7, and the outer ends of the cross-seam side beam 11 and the fixed side beam 12 are against the anti-collision baffle 8 or fixed on the anti-collision baffle 8. The height of the anti-collision baffle 8 can be adjusted according to the height of the road surface. The anti-collision baffle 8 replaces the traditional concrete transition section, solving the problem of easy damage to the concrete transition section.

[0044] The embedded steel plate 6 can be fixed to the beam body by means of shear nails 62. In addition, the beam body of this embodiment is not limited to the beam body structure of embedded steel plates, but is also applicable to the beam body structure of embedded steel bars.

[0045] After the adjustment device is assembled, a concrete layer 9 is poured on the embedded steel plate 6. The concrete layer 9 is located below the cross-seam side beam 11 and the fixed side beam 12. An elastic filler layer 10 is poured above the concrete layer 9. The upper surface of the elastic filler layer 10 is lower than the upper surface of the load-bearing slider. Ensure that the elastic sealing material is 2mm lower than the road surface at high temperatures and 5-6mm lower than the road surface at low temperatures. The elastic sealing material mainly plays a role in water-tightness and also has the advantage of acid and alkali corrosion resistance. The elastic filler layer can be filled with elastic materials to form a layer structure, such as polyurethane elastic glue or asphalt putty, or the material can be used as the main base material and mixed with other materials to make a filling material, which is then filled between the areas surrounded by the left and right anti-collision baffles set face to face. After cooling and shaping, it becomes a filler layer structure with elasticity.

[0046] In summary, it can be concluded that the non-porous elastic displacement adjustment device has a simple overall structure, fast construction speed, and little impact on traffic. It also has the advantages of good driving comfort, environmental protection, low noise, and simple maintenance. It can also be used on bridges with large expansion and contraction volumes and large traffic volumes. In addition, the non-porous elastic displacement adjustment device solves the defects of bulges and depressions in seamless expansion joints under high and low temperature conditions, as well as the problem of detachment and cracking after long-term use, leading to water leakage. On the basis of meeting the requirements of longitudinal expansion and displacement, it can not only meet the function of full watertightness, but also evenly distribute the expansion and displacement of the beam body to the entire expansion joint area, thereby increasing the service life of the elastomer, while also having a certain vertical angle function.

[0047] like Figure 6 As shown, the supporting rib 5 adopts a horseshoe structure, and the rest of the structure is the same and will not be described here. Figure 3 and Figure 6 In addition to the structure, other different forms of structures can also be used.

[0048] Example 2:

[0049] like Figure 7 As shown, the elastic member of this embodiment is a second spring 32, which is installed on both sides of the cross-gap side beam 11 and the fixed side beam 12. The two ends of the second spring 32 are respectively limited and elastically abutted on the corresponding load-bearing slider, namely the first slider 21. The second spring 32 also serves to evenly distribute the expansion and contraction displacement throughout the expansion joint area.

[0050] Example 3:

[0051] like Figure 8 As shown, the elastic member of this embodiment is an elastic clamping plate 33, which is provided on both sides of the cross-slot side beam 11 and the fixed side beam 12. The two ends of the elastic clamping plate 33 are respectively limited and elastically abutted on the corresponding load-bearing slider, namely the first slider 21. The elastic clamping plate 33 also serves to evenly distribute the expansion and contraction displacement throughout the expansion joint area.

[0052] Example 4:

[0053] like Figures 9 to 14As shown, a slide groove 17 is provided on the side wall of the cross-seam side beam 11 and the fixed side beam 12 of this embodiment, and the load-bearing slider is a second slider 22 that is buckled on the cross-seam side beam 11 and the fixed side beam 12. Both ends of the second slider 22 have a block 221 that is movably embedded in the slide groove 17. The beam assembly and the load-bearing slider of this embodiment are installed in a concave-convex manner, and the connecting bolts are eliminated, which has higher strength and safety factor. An upper and lower surface are provided at the intersection of the cross-seam side beam 11 and the fixed side beam 12 to ensure normal longitudinal displacement while improving the strength of the product. Due to the presence of the load-bearing slider at the intersection, a limiting effect is also provided for the cross-seam side beam 11 to ensure that the cross-seam side beam 11 does not tilt up. In addition, the elastic member of this embodiment adopts a square spring structure.

[0054] Embodiment 5:

[0055] like Figure 15 and Figure 16 As shown, the load-bearing slider of this embodiment is an annular slider 23 that is mounted on the crossbeam. That is, the annular slider 23 is completely mounted on the crossbeam. In this way, the mounting structure of the load-bearing slider is more reliable and prevents it from falling off the crossbeam. The remaining structure of this embodiment is the same as that of the fourth embodiment and will not be described in detail here.

[0056] In the specification and claims of the present invention, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0057] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, various modifications or improvements can be made to the present invention without departing from the principles of the present invention. For example, the beam can be a rectangular beam or a circular beam or a beam with other suitable shapes. The load-bearing sliders on two adjacent beams can be staggered or aligned. The elastic member mounted on the beam can be a circular spring or a square spring or a spring with other suitable shapes. These are all considered to be within the scope of protection of the present invention.

Claims

1. A non-porous elastic displacement adjustment device, comprising a first component mounted on a first beam mounting notch (101) and a second component mounted on a second beam mounting notch (102), wherein the first component and the second component are distributed along the longitudinal direction of the bridge and can move relative to each other, characterized in that: The first component is a cross-seam side beam (11), and the second component is a fixed side beam (12). Load-bearing sliders are arranged at intervals on the cross-seam side beam (11) and the fixed side beam (12). The load-bearing sliders can move longitudinally relative to the cross-seam side beam (11) and the fixed side beam (12), and elastic members are elastically supported between adjacent load-bearing sliders.

2. The non-porous elastic displacement adjustment device according to claim 1, characterized in that: The load-bearing slider is a first slider (21) that is buckled onto the cross-gap side beam (11) and the fixed side beam (12). The first slider (21) is a U-shaped member. A first waist-shaped hole (13) is opened on the cross-gap side beam (11) and the fixed side beam (12). An installation hole (211) is opened on the opposite side wall of the first slider (21). A first bolt (41) passes through the installation hole (211) and the first waist-shaped hole (13) so that the first slider (21) has a longitudinal sliding space.

3. The non-porous elastic displacement adjustment device according to claim 2, characterized in that: The cross-gap side beam (11) and the fixed side beam (12) have butt-jointed ends, each butt-jointed end is provided with a second waist-shaped hole (14), and a second bolt (42) passes through the second waist-shaped hole (14) to connect the cross-gap side beam (11) and the fixed side beam (12) together.

4. The non-porous elastic displacement adjustment device according to claim 3, characterized in that: The butt end of the cross-slot side beam (11) is formed with a cut portion (15) and the butt end of the fixed side beam (12) is provided with a groove (16), or the butt end of the cross-slot side beam (11) is provided with a groove and the butt end of the fixed side beam (12) is formed with a cut portion, the cut portion (15) is inserted into the groove (16), and a circumferential movable gap is provided between the second bolt (42) and the second waist-shaped hole (14).

5. The non-porous elastic displacement adjustment device according to claim 1, characterized in that: A sliding groove (17) is provided on the side walls of the cross-seam side beam (11) and the fixed side beam (12); the load-bearing slider is a second slider (22) that is inverted on the cross-seam side beam (11) and the fixed side beam (12); and both ends of the second slider (22) have a clamping block (221) that is movably embedded in the sliding groove (17).

6. The non-porous elastic displacement adjustment device according to claim 2, characterized in that: The elastic member is a first spring (31) sleeved on the cross-seam side beam (11) and the fixed side beam (12), and both ends of the first spring (31) elastically abut against corresponding bearing sliders.

7. The non-porous elastic displacement adjustment device according to claim 2, characterized in that: The elastic member is a second spring (32), which is arranged on both sides of the cross-seam side beam (11) and both sides of the fixed side beam (12), and both ends of the second spring (32) are respectively limited and elastically supported on the corresponding bearing slider.

8. The non-porous elastic displacement adjustment device according to claim 2, characterized in that: The elastic member is an elastic clamping plate (33), which is arranged on both sides of the cross-seam side beam (11) and both sides of the fixed side beam (12), and the two ends of the elastic clamping plate (33) are respectively limited and elastically supported on the corresponding bearing slider.

9. The non-porous elastic displacement adjustment device according to any one of claims 2 to 8, characterized in that: A supporting rib (5) is provided below the cross-seam side cross beam (11) and the fixed side cross beam (12), the bottom of the supporting rib (5) being fixed in the first beam body mounting groove and the second beam body mounting notch (102), the supporting rib (5) on the first beam body being fixed to the cross-seam side cross beam (11), and the top of the supporting rib (5) on the second beam body being provided with a guide groove (51) for the longitudinal sliding of the cross-seam side cross beam (11).

10. The non-porous elastic displacement adjustment device according to any one of claims 2 to 8, characterized in that: A height adjustment component for adjusting the height of the cross-seam side beam (11) is provided in the first beam body installation notch (101), and a height adjustment component for adjusting the height of the fixed side beam (12) is provided in the second beam body installation notch (102).

11. The non-porous elastic displacement adjustment device according to claim 10, characterized in that: Embedded steel plates (6) are installed in the first beam body installation notch (101) and the second beam body installation notch (102), and the bottom of the height adjustment component is fixed on the embedded steel plates (6).

12. The non-porous elastic displacement adjustment device according to claim 11, characterized in that: A concrete layer (9) is cast on the embedded steel plate (6), and the concrete layer (9) is located below the span side cross beam (11) and the fixed side cross beam (12). An elastic filler layer (10) is cast above the concrete layer (9), and the upper surface of the elastic filler layer (10) is lower than the upper surface of the load-bearing slider.

13. The non-porous elastic displacement adjustment device according to claim 11, characterized in that: The height adjustment component is a T-shaped steel plate (7), the bottom of the T-shaped steel plate (7) is welded and fixed to the embedded steel plate (6), the outer side of the T-shaped steel plate (7) is welded and fixed to an anti-collision baffle (8), and the outer ends of the cross-seam side beam (11) and the fixed side beam (12) are against the anti-collision baffle (8) or fixed to the anti-collision baffle (8).

14. The non-porous elastic displacement adjustment device according to claim 1, characterized in that: The load-bearing slider is an annular slider (23) sleeved on the cross-seam side beam (11) and the fixed side beam (12).

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