Steel truss girder ball-type support with convenient construction and installation method

Abstract

This invention discloses a convenient steel truss spherical bearing and its installation method, comprising an upper bearing assembly and a lower bearing assembly. The upper bearing assembly includes a connector and an adjusting plate. The connector is suitable for installing the adjusting plate and the steel truss beam vertically, and the adjusting plate is suitable for horizontal installation at the bottom of the steel truss beam. The lower bearing assembly includes a bearing body and an anchor. The anchor is suitable for installing the bearing body vertically onto the bearing pad. From top to bottom, a flat sliding plate, a steel liner, and a spherical sliding plate are installed between the bearing body and the adjusting plate. Through the combination of the upper and lower sliding plates and the limiting frame structure, the distance between the top surface of the upper sliding plate and the bottom surface of the lower sliding plate can be adjusted by using high-strength bolts to drive the pad. This facilitates elevation adjustment and future replacement; only the steel liner, the spherical sliding plate, or the lower sliding plate needs to be replaced, significantly reducing costs. Adjusting the high-strength bolts outward from the limiting frame forces a reduction in the distance between the top and bottom surfaces of the upper and lower sliding plates, allowing for the replacement of the internal structure. The operation is convenient and efficient.

Description

Technical Field

[0001] This invention relates to the technical field of bridge bearings, specifically to a convenient steel truss spherical bearing and its installation method. Background Technology

[0002] Bridge bearings are crucial structural components connecting the superstructure and substructure of a bridge. They reliably transfer the reactions and deformations (displacement and rotation) of the superstructure to the substructure, ensuring that the actual stress conditions of the structure match the calculated theoretical diagrams. Commonly used bridge bearings include plate rubber bearings, pot rubber bearings, and spherical bearings. Among these, spherical bearings are widely used due to their high load-bearing capacity, large translational capacity, large rotational capacity, and excellent durability.

[0003] A search revealed CN205115998U, which discloses a spherical bearing for the replacement or reinforcement of structures. The adjustable bolts allow for changes in the bearing's position, height, and level, facilitating operations during replacement and reinforcement of older bridges. The bearing is also structurally stable, compact, and lightweight. However, this technology, which uses adjustable bolts to alter elevation and level, neglects the crucial requirement for excellent load-bearing capacity and durability in bridge spherical bearings. Relying solely on adjustable bolts for vertical load bearing cannot meet the long-term stable and reliable requirements of bridges on-site. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to solve the problems of stability, reliability and later replacement of the elevation control structure of traditional spherical bearings for bridges, and also to solve the problem of sealing and vibration reduction of traditional spherical bearings.

[0005] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0006] A convenient steel truss spherical bearing includes an upper bearing assembly and a lower bearing assembly. The upper bearing assembly includes a connector and an adjusting plate. The connector is suitable for installing the adjusting plate and the steel truss beam vertically. The adjusting plate is suitable for horizontal installation at the bottom of the steel truss beam.

[0007] The lower support assembly includes a support body and an anchor, the anchor being adapted to install the support body onto the support pad stone from both above and below.

[0008] A flat sliding plate, a steel liner, and a spherical sliding plate are installed between the support body and the adjusting plate, from top to bottom.

[0009] The flat slide includes an upper slide and a lower slide. An adjustment component is installed between the upper and lower slides. The adjustment component is suitable for adjusting the distance between the top surface of the upper slide and the bottom surface of the lower slide. Both the upper and lower slides are horizontally arranged and the surfaces in contact with each other are sloping surfaces. Adjustment grooves are provided on the bottom surface of the upper slide and the top surface of the lower slide. The adjustment grooves are suitable for horizontally installing the adjustment component.

[0010] Preferably, the planar sliding plate further includes a limiting frame suitable for covering the outer side of the upper and lower sliding plates. Multiple sets of internal threaded holes are provided on both the left and right sides of the limiting frame along the length direction. High-strength bolts are threaded into the internal threaded holes. The ends of the high-strength bolts abut against a pressing plate. The pressing plate is suitable for horizontal movement inside the limiting frame. The high-strength bolts are suitable for horizontally adjusting the pressing plate to press the upper or lower sliding plate and adjust the distance between the top surface of the upper sliding plate and the bottom surface of the lower sliding plate. The pressing plate is arranged parallel to the adjusting component.

[0011] Preferably, reinforcing angle irons are welded and fixed to the four corners of the upper and lower sides of the limiting frame;

[0012] Stainless steel plates are installed on the sides of both the upper and lower sliding plates. A UHMWPE plate is installed on the side of the pressing plate opposite to the stainless steel plate. The stainless steel plate and the UHMWPE plate are suitable for sliding up and down.

[0013] Preferably, the cross-section of the adjustment groove is arc-shaped, dovetail-shaped, or trapezoidal, and the side of the limiting frame is provided with through holes for the adjustment component to be horizontally and longitudinally installed in the adjustment grooves corresponding to two positions.

[0014] Preferably, a shock-absorbing assembly is installed between the adjusting plate and the support body. The shock-absorbing assembly includes a shock-absorbing sleeve, which is adapted to be vertically fitted to the adjusting plate. A sealing ring is installed at the bottom of the shock-absorbing sleeve, and a connecting ring is provided on the outer circle of the top of the support body. The connecting ring and the sealing ring are adapted to be arranged in parallel, and a connecting groove is provided on the opposite side of the connecting ring and the sealing ring. The connecting groove is a T-shaped structure, and a shock-absorbing seal is installed in the two connecting grooves. The shock-absorbing seal is adapted to be pulled up and down to seal between the connecting ring and the sealing ring.

[0015] Preferably, the shock-absorbing seal includes two connecting wings arranged in an inner and outer direction and a shock-absorbing body located in the middle of the connecting wings. The connecting wings are suitable for unobstructed entry into the connecting groove and reverse pulling. The shock-absorbing body is a hollow structure and has a support body with a spherical cross-section in the middle of its inner side. The thickness of the support body is greater than the thickness of the shock-absorbing body.

[0016] Preferably, the bottom of the adjusting plate is provided with a limiting groove, and a permanent magnet suitable for fixing the shock-absorbing sleeve is installed in the limiting groove. The shock-absorbing sleeve is assembled from at least two arc-shaped structures, and the top is located in the limiting groove. The bottom of the shock-absorbing sleeve is vertically fixed by a bolt sealing ring.

[0017] A convenient method for installing spherical supports for steel trusses, comprising the following steps:

[0018] 1) Preparation:

[0019] The position and size of the pre-embedded holes of the anchor parts are re-measured on the top surface of the bearing pad stone using a total station. The cross lines of the bearing body are drawn on the bearing pad stone. The installation area of ​​the bearing body on the top surface of the bearing pad stone is roughened and cleaned.

[0020] 2) Install support formwork:

[0021] A support template is installed on the outer side of the roughened area on the top surface of the support pad stone. A seepage-proof structure is installed at the four corners of the support template. The seepage-proof structure includes a connecting plate that is bolted to the ends of adjacent support templates. An adjusting rod is installed on the connecting plate through a bearing. The adjusting rod is positioned directly opposite the corner of the support template. An external thread is provided on the outer side of one end of the adjusting rod. A sleeve is installed on the external thread. A hinge rod is installed on both sides of the sleeve. The hinge rod has a V-shaped structure. A pressure roller is installed on both free ends of the hinge rod. A spring is installed between the two single rods of the hinge rod. A rubber strip is clamped on the outer side of the pressure roller, and the two ends of the rubber strip are fixed to the connecting plate by pressure strips.

[0022] 3) Install the support body:

[0023] A quick leveling module is built around the support formwork. The quick leveling module includes a base located outside the support formwork. Three leveling rods are circumferentially distributed on the base. The ends of the leveling rods are equipped with universal joints. A leveling seat is installed on the top of the leveling rod. At least three sets of hooks are installed at equal intervals on the leveling seat. Each set of hooks is suitable for hooking into the connecting groove of the support body. Adjust the position of the base to ensure that the leveling seat is directly above the support body. The support body is suitable for being lowered to the elevation position. During the lowering process, it is hooked into the pre-embedded hole through the hooks and connecting groove. The anchor is inserted into the pre-embedded hole.

[0024] 4) Pouring grout:

[0025] Continuously pour the required grout from the support template on one side of the support body until it seeps out from the support template on the other side. The grout is epoxy mortar. After standing still for 30-60 seconds, adjust the adjusting rod to move the pressure roller on the side near the corner joint to the corner joint, thereby pressing the mortar back into the support template to prevent pitting or honeycomb. After the mortar strength meets the requirements, remove the support template and the quick leveling module.

[0026] 5) Assemble the support body and the flat sliding plate:

[0027] Clean the spherical crown surface of the support body with acetone or alcohol, ensuring that the contact surface is free from damage, corrosion, and scratches. Install the spherical sliding plate, steel liner, and flat sliding plate from bottom to top on the spherical crown surface. Install the damping seal and sealing ring on the outside of the support body, and install the damping sleeve on the sealing ring. Clean the top surface of the flat sliding plate with acetone or alcohol, ensuring that the contact surface is free from damage, corrosion, and scratches.

[0028] 6) Hoisting steel truss beams:

[0029] Install the adjusting plate on the bottom sleeve connector of the steel truss beam and lift it above the support body. Lower it vertically to the top of the shock-absorbing sleeve and attach it to the limiting groove with a permanent magnet. Ensure the adjusting plate is horizontal during the lowering process.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. This invention adopts a novel combined planar sliding plate structure, which combines an upper sliding plate, a lower sliding plate, and a limiting frame. High-strength bolts drive the pad plate to adjust the distance between the top surface of the upper sliding plate and the bottom surface of the lower sliding plate, making it easy to adjust the elevation. It also facilitates future replacement, as only the steel backing plate, the spherical sliding plate, or the lower sliding plate needs to be replaced, which greatly reduces costs. In addition, during replacement, only the high-strength bolts need to be adjusted outwards from the limiting frame to force the distance between the top and bottom surfaces of the upper and lower sliding plates to be reduced, thus completing the internal structure replacement. The operation is convenient and efficient.

[0032] 2. This invention employs a structural design of permanent magnets, shock-absorbing sleeves, sealing rings, connecting rings, and shock-absorbing seals. The shock-absorbing sleeves utilize an arc-shaped splicing structure, enabling quick disassembly and assembly during replacement or installation. After assembly, the shock-absorbing sleeves form a hoop on the outside of the support body. The sealing rings and connecting rings, through the shock-absorbing seals, achieve a sealing and shock-absorbing effect, ensuring that the moving areas between the internal steel lining plates, flat sliding plates, and spherical sliding plates are in a relatively stable environment, thus enabling the spherical support to have long-term stable and reliable use.

[0033] 3. The method uses a support formwork with a seepage-proof structure. After the seepage-proof structure is installed at the end of the support formwork, after the grout is poured, the adjusting rod is adjusted to move the pressure roller on the side near the corner joint to the corner joint, thereby pressing the mortar back into the support formwork to prevent pitting or honeycomb phenomena.

[0034] 4. The method uses a quick leveling module. By adding this structure to the outside of the support template, the support body can be quickly leveled. The principle is that the two ends of the adjusting rod are universal joints. Through the two universal joints, the leveling seat can be reset as a horizontal reference platform, thereby ensuring the horizontal effect of the reference seat. Attached Figure Description

[0035] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the overall structure of the limiting frame of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the shock-absorbing seal in this invention;

[0038] Figure 4 This is a cross-sectional view of the support template in this invention;

[0039] Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle;

[0040] Figure 6 This is a schematic diagram of the overall structure of the rapid leveling module in this invention;

[0041] Figure 7 This is the main view of the rapid leveling module in this invention;

[0042] Figure 8 This is a schematic diagram of the structure of the shock-absorbing sleeve in this invention. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0044] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] Example 1, such as Figures 1 to 3 , Figure 8 As shown, a convenient steel truss spherical support includes an upper support assembly 10 and a lower support assembly 20. The upper support assembly 10 includes a connector 50 and an adjusting plate 30. The connector 50 is suitable for installing the adjusting plate 30 and the steel truss 40 vertically. The adjusting plate 30 is suitable for horizontal installation at the bottom of the steel truss 40.

[0046] The lower support assembly 20 includes a support body 60 and an anchor 70, the anchor 70 being adapted to install the support body 60 on the support pad stone from the top and bottom.

[0047] A flat sliding plate 80, a steel liner plate 90, and a spherical sliding plate 100 are installed between the support body 60 and the adjusting plate 30 from top to bottom;

[0048] The planar sliding plate 80 includes an upper sliding plate 81 and a lower sliding plate 82. An adjusting component 83 (insert strip or insert rod) is installed between the upper sliding plate 81 and the lower sliding plate 82. The adjusting component 83 is suitable for adjusting the distance between the top surface of the upper sliding plate 81 and the bottom surface of the lower sliding plate 82. The upper sliding plate 81 and the lower sliding plate 82 are both horizontally arranged and the surfaces in contact with each other are sloping surfaces. An adjusting groove 84 is provided on the bottom surface of the upper sliding plate 81 and the top surface of the lower sliding plate 82. The adjusting groove 84 is suitable for horizontally installing the adjusting component 83.

[0049] The planar sliding plate 80 also includes a limiting frame 85 suitable for covering the outer sides of the upper sliding plate 81 and the lower sliding plate 82. Multiple sets of internally threaded holes are provided on both sides of the limiting frame 85 along its length. High-strength bolts 86 are threaded into these holes, and the ends of the high-strength bolts 86 abut against a pressing plate 87. The pressing plate 87 is suitable for horizontal movement within the limiting frame 85. The high-strength bolts 86 are suitable for horizontally adjusting the pressing plate 87 to press against the upper sliding plate 81 or the lower sliding plate 82, adjusting the distance between the top surface of the upper sliding plate 81 and the bottom surface of the lower sliding plate 82. The pressing plate 87 is arranged parallel to the adjusting component 83. The high-strength bolts 86 allow for left-right adjustment of the upper and lower sliding plates, causing them to be offset along the inclined surface to adjust the distance between their top and bottom surfaces, thereby adjusting the elevation of their spherical support. This design facilitates installation and subsequent replacement by only replacing easily worn parts (lower sliding plate, steel liner, and spherical sliding plate), where the spherical sliding plate is made of ultra-high molecular weight polyethylene.

[0050] The cross-section of the adjustment groove 84 is arc-shaped, dovetail-shaped, or trapezoidal. The side of the limiting frame 85 is provided with through holes for the adjustment component 83 to be installed horizontally and longitudinally in the adjustment groove 84 at two corresponding positions.

[0051] The four corners of the upper and lower sides of the limiting frame 85 are all welded and fixed with reinforcing angle irons 88.

[0052] Stainless steel plates 89 are installed on the sides of both the upper sliding plate 81 and the lower sliding plate 82. A high molecular weight polyethylene plate 810 is installed on the side of the pressing plate 87 opposite to the stainless steel plate 89. The stainless steel plate 89 and the high molecular weight polyethylene plate 810 are suitable for sliding up and down.

[0053] The following improvements are made based on the above embodiments, such as... Figure 3As shown, a shock-absorbing assembly is installed between the adjusting plate 30 and the support body 60. The shock-absorbing assembly includes a shock-absorbing sleeve 110, which is adapted to be vertically fitted to the adjusting plate 30. A sealing ring 120 is installed at the bottom of the shock-absorbing sleeve 110. A connecting ring 130 is provided on the outer circle of the top of the support body 60. The connecting ring 130 and the sealing ring 120 are adapted to be arranged in parallel, and connecting grooves 140 are provided on opposite sides of the connecting ring 130 and the sealing ring 120. The connecting grooves 140 have a T-shaped structure, and shock-absorbing seals 150 are installed in the two connecting grooves 140. The shock-absorbing seals 150 are adapted to be pulled up and down to seal between the connecting rings 130 and the sealing rings 120. By pulling the sealing rings 120 and the connecting rings 130 together by the shock-absorbing seals 150, a seal can be achieved between them, while also providing shock absorption.

[0054] The following improvements are made based on the above embodiments, such as... Figure 3 As shown, the shock-absorbing seal 150 includes two connecting wings 153 arranged in an inner and outer direction and a shock-absorbing body 152 located in the middle of the connecting wings 153. The connecting wings 153 are adapted to enter the connecting groove 140 without obstruction and be pulled in the opposite direction. The shock-absorbing body 152 has a hollow structure and a support body 151 with a spherical cross-section is provided in the middle of the inner side. The thickness of the support body 151 is greater than the thickness of the shock-absorbing body 152.

[0055] The following improvements are made based on the above embodiments, such as... Figure 1 As shown, the bottom of the adjusting plate 30 is provided with a limiting groove 160. A permanent magnet 170 suitable for fixing the damping sleeve 110 vertically is installed in the limiting groove 160. The damping sleeve 110 is assembled from at least two arc-shaped structures, which facilitates assembly and disassembly. Its top is located in the limiting groove 160, and its bottom is vertically fixed by a bolt sealing ring 120. The limiting groove 160 can fix it vertically, so that the spherical support can have a high damping effect when the beam is torn laterally.

[0056] A convenient method for installing spherical supports for steel trusses, comprising the following steps:

[0057] 1) Preparation:

[0058] The position and size of the pre-embedded hole of the anchor 70 are re-measured on the top surface of the bearing pad stone using a total station. The cross lines of the bearing body 60 are drawn on the bearing pad stone. The installation area of ​​the bearing body 60 on the top surface of the bearing pad stone is roughened and cleaned.

[0059] 2) Install support formwork 180:

[0060] Install support formwork 180 on the outer side of the roughened area on the top surface of the bearing pad stone. Install anti-leakage structures at the four corners of support formwork 180, such as... Figure 4 , Figure 5As shown, the anti-leakage structure includes a connecting plate 200 bolted between the ends of adjacent support templates 180. An adjusting rod 190 is mounted on the connecting plate 200 via bearings. The adjusting rod 190 is positioned opposite the corner of the support template 180. One end of the adjusting rod 190 has an external thread, and a sleeve 210 is fitted onto the external thread. Hinged rods 220 are mounted on both sides of the sleeve 210. The hinged rods 220 have a V-shaped structure. Pressure rollers 230 are mounted on both free ends of the hinged rods 220. A spring 223 is installed between the two single rods of the hinged rods 220. A rubber strip 224 is clamped on the outside of the pressure rollers 230, and the two ends of the rubber strip 224 are fixed to the connecting plate 200 by pressure strips 225.

[0061] 3) Install the support body 60:

[0062] A quick-leveling module is built around the 180mm perimeter of the support formwork, such as... Figure 6 , Figure 7 As shown, the quick leveling module includes a base 226 located outside the support template 180. Three leveling rods 227 are circumferentially distributed on the base 226. The ends of the leveling rods 227 are all provided with universal joints. A leveling seat 228 is installed on the top of the leveling rods 227. At least three sets of hooks 229 are installed at equal intervals on the leveling seat 228. Each set of hooks 229 is suitable for hooking the connecting groove 140 of the support body 60. Adjust the position of the base 226 to ensure that the leveling seat 228 is located directly above the support body 60. The support body 60 is suitable for being lowered to the elevation position. During the lowering process, the hooks 229 and the connecting groove 140 are hooked together, and the anchor 70 enters the pre-embedded hole.

[0063] 4) Pouring grout:

[0064] The required grouting material is continuously poured from the support template 180 on one side of the support body 60 until it seeps out from the support template 180 on the other side. The grouting material is epoxy mortar. After standing still for 30-60 seconds, the adjusting rod 190 is adjusted to move the pressure roller 230 on the side near the corner joint to the corner joint, thereby pressing the mortar back into the support template 180 to prevent pitting or honeycomb. After the mortar strength meets the requirements, the support template 180 and the quick leveling module are removed.

[0065] 5) Assemble the support body 60 and the flat sliding plate 80:

[0066] Clean the spherical crown surface of the support body 60 with acetone or alcohol, ensuring that the contact surface is free from damage, corrosion, and scratches. Install the spherical sliding plate 100, steel liner plate 90, and flat sliding plate 80 sequentially from bottom to top on the spherical crown surface. Install the shock-absorbing seal 150 and sealing ring 120 on the outside of the support body 60, and install the shock-absorbing sleeve 210 on the sealing ring 120. Clean the top surface of the flat sliding plate 80 with acetone or alcohol, ensuring that the contact surface is free from damage, corrosion, and scratches.

[0067] 6) Hoisting of steel truss beam 40:

[0068] The adjusting plate 30 is installed on the bottom sleeve 210 connector 50 of the steel truss beam 40 and lifted above the support body 60. It is then lowered vertically to the top of the shock-absorbing sleeve 110 and attracted to the limiting groove 160 by the permanent magnet 170. During the lowering process, the adjusting plate 30 is kept in a horizontal state.

[0069] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A steel truss girder ball-type support which is easy to construct, characterized in that, The application relates to a steel truss girder support device, which comprises an upper support assembly (10) and a lower support assembly (20), the upper support assembly (10) comprises a connecting piece (50) and a leveling plate (30), the connecting piece (50) is suitable for mounting the leveling plate (30) and the steel truss girder (40) up and down, and the leveling plate (30) is suitable for being horizontally mounted at the bottom of the steel truss girder (40); The lower support assembly (20) comprises a support body (60) and an anchoring piece (70), the anchoring piece (70) is suitable for mounting the support body (60) on a support cushion up and down; A plane sliding plate (80), a steel lining plate (90) and a spherical sliding plate (100) are sequentially mounted between the support body (60) and the leveling plate (30) from top to bottom; The plane sliding plate (80) comprises an upper sliding plate (81) and a lower sliding plate (82), an adjusting piece (83) is mounted between the upper sliding plate (81) and the lower sliding plate (82), the adjusting piece (83) is suitable for adjusting the distance between the top surface of the upper sliding plate (81) and the bottom surface of the lower sliding plate (82), the upper sliding plate (81) and the lower sliding plate (82) are horizontally arranged, and the contact surfaces of the upper sliding plate (81) and the lower sliding plate (82) are inclined surfaces, the bottom surface of the upper sliding plate (81) and the top surface of the lower sliding plate (82) are provided with adjusting grooves (84), and the adjusting grooves (84) are suitable for horizontally mounting the adjusting piece (83); The plane sliding plate (80) further comprises a limiting frame (85) suitable for being arranged outside the upper sliding plate (81) and the lower sliding plate (82), a plurality of groups of internal thread holes are formed in the left and right sides of the limiting frame (85) along the length direction, high-strength bolts (86) are threadedly mounted in the internal thread holes, the end portions of the high-strength bolts (86) abut against pressing plates (87), the pressing plates (87) are suitable for horizontally moving in the limiting frame (85), the high-strength bolts (86) are suitable for horizontally and transversely adjusting the pressing plates (87) to press the upper sliding plate (81) or the lower sliding plate (82) and adjust the distance between the top surface of the upper sliding plate (81) and the bottom surface of the lower sliding plate (82), and the pressing plates (87) are arranged in parallel with the adjusting piece (83); A damping assembly is mounted between the leveling plate (30) and the support body (60), the damping assembly comprises a damping sleeve (110), the damping sleeve (110) is suitable for being vertically mounted in close contact with the leveling plate (30), a sealing ring (120) is mounted at the bottom of the damping sleeve (110), a connecting ring (130) is arranged outside the top of the support body (60), the connecting ring (130) and the sealing ring (120) are suitable for being horizontally arranged, connecting grooves (140) are formed in the opposite sides of the connecting ring (130) and the sealing ring (120), the connecting grooves (140) are T-shaped structures, damping sealing pieces (150) are mounted in the two connecting grooves (140), and the damping sealing pieces (150) are suitable for being up and down pulled and sealedly mounted between the connecting ring (130) and the sealing ring (120). The damping seal (150) comprises two inner and outer connecting wings (153) and a damping body (152) in the middle of the connecting wings (153), the connecting wings (153) are suitable for entering the connecting groove (140) without obstacles and being pulled reversely, the damping body (152) is a hollow structure and is provided with a support body (151) with a spherical cross section in the middle, the thickness of the support body (151) is greater than that of the damping body (152).

2. The ball-type support of a steel truss beam convenient for construction according to claim 1, characterized in that, The four corners of the upper and lower sides of the limiting frame (85) are welded with reinforcing angle irons (88); The side portions of the upper and lower sliding plates (81 and 82) are provided with stainless steel plates (89), the opposite side of the stainless steel plate (89) is provided with an ultra-high molecular weight polyethylene plate (810), and the stainless steel plate (89) and the ultra-high molecular weight polyethylene plate (810) are suitable for sliding up and down.

3. The steel truss girder ball-type support of claim 2, wherein The cross section of the adjusting groove (84) is in an arc shape, a dovetail shape or a trapezoidal structure, and the side portion of the limiting frame (85) is provided with a through hole for horizontally and longitudinally installing the adjusting piece (83) in the two position corresponding adjusting grooves (84).

4. The steel truss girder ball-type support of claim 3, wherein The bottom of the leveling plate (30) is provided with a limiting groove (160), the limiting groove (160) is provided with a permanent magnet (170) suitable for fixing the damping sleeve (110) up and down, the damping sleeve (110) is assembled by at least two arc structures, and the top is located in the limiting groove (160), and the bottom of the damping sleeve (110) is fixed vertically through the bolt sealing ring (120).

5. A method of installing a ball-type support of a steel truss bridge according to claim 4, wherein The steps are as follows: 1) Preparation: The pre-buried hole position and size of the anchoring piece (70) are re-measured on the top surface of the support cushion stone by a total station instrument, and the cross line of the support body (60) is drawn on the support cushion stone, the installation area of the support body (60) on the top surface of the support cushion stone is chiseled and cleaned; 2) Install the support template (180): Install the support template (180) outside the chiseled area on the top surface of the support cushion stone, install the anti-leakage structure at the four corners of the support template (180), the anti-leakage structure comprises a connecting plate (200) installed between the ends of adjacent support templates (180) by bolts, an adjusting rod (190) is installed on the connecting plate (200) by a bearing, the adjusting rod (190) is located opposite to the corner joint position of the support template (180), an external thread is arranged on one end of the adjusting rod (190), a sleeve (210) is matched and installed on the external thread, hinge rods (220) are installed on both sides of the sleeve (210), the hinge rods (220) are V-shaped structures, pressure rollers (230) are installed on both free ends of the hinge rods (220), springs (223) are installed between the two single rods of the hinge rods (220), and rubber strips (224) are wrapped outside the pressure rollers (230), and the two ends of the rubber strips (224) are fixed on the connecting plate (200) by pressing strips (225); 3) Install the support body (60): A quick leveling module is built outside the support template (180), the quick leveling module includes a base (226) located outside the support template (180), three equidistant leveling rods (227) are circumferentially distributed on the base (226), universal joints are arranged at the ends of the leveling rods (227), leveling seats (228) are installed on the top of the leveling rods (227), at least three groups of hooks (229) are equidistantly installed on the leveling seats (228), each group of hooks (229) is suitable for hooking the connecting grooves (140) of the support body (60), the position of the base (226) is adjusted to ensure that the leveling seat (228) is located directly above the support body (60), the support body (60) is hoisted and is suitable for being lowered to the elevation position, the hooks (229) and the connecting grooves (140) are hooked during the lowering process, and the anchoring piece (70) enters the embedded hole; 4) Pouring grouting material: The required grouting material is continuously poured from the support template (180) on one side of the support body (60) to seep out from the support template (180) on the other side, the grouting material is epoxy mortar, after being static for 30s-60s, the adjusting rod (190) drives the pressing roller (230) on the side close to the corner joint to move to the corner joint, so that the mortar is pressed back into the support template (180), so as to prevent the appearance of pitted surface or honeycomb phenomenon, after the strength of the mortar meets the requirements, the support template (180) and the quick leveling module are removed; 5) Assembling the support body (60) and the plane slide plate (80): The spherical surface slide plate (100), the steel lining plate (90) and the plane slide plate (80) are sequentially installed from bottom to top on the spherical crown surface of the support body (60) by using acetone or alcohol to clean, while ensuring that the contact surface is not scratched, rusted or scratched, the damping sealing element (150) and the sealing ring (120) are installed on the outside of the support body (60), and the damping sleeve (210) is installed on the sealing ring (120), the top surface of the plane slide plate (80) is cleaned by using acetone or alcohol, while ensuring that the contact surface is not scratched, rusted or scratched; 6) Hoisting the steel truss beam (40): The leveling plate (30) is installed on the sleeve (210) connecting piece (50) at the bottom of the steel truss beam (40) and is hoisted to the upper side of the support body (60), is vertically lowered, is adsorbed in the limiting groove (160) by the permanent magnet (170) at the top of the damping sleeve (110) by vertical lowering, and the horizontal state of the leveling plate (30) is ensured during the lowering process.

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