Support body structure for replacing swing column type support of T-beam bridge

Abstract

The utility model discloses a kind of support body structures of replacing T beam bridge swing column type support, including setting in cap beam top's cushion stone, setting in the reinforcing member of T beam interval's cross partition plate bottom and setting in the rubber support between cushion stone and reinforcing member, reinforcing member includes setting in the steel sleeve hoop of cross partition plate bottom and filling layer filled between steel sleeve hoop and cross partition plate, steel sleeve hoop is connected with cross partition plate by multiple connecting ribs, steel sleeve hoop is the steel sleeve of top open, steel sleeve hoop is reserved for the clamping groove of cross partition plate clamping setting, the bottom of the inside of steel sleeve hoop is lower than the bottom of cross partition plate arrangement. The utility model is simple in structure, reasonable in design, convenient to assemble, by connecting rib, steel sleeve hoop is set in the bottom of cross partition plate, and filling layer is set in steel sleeve hoop, the outer package and local pressure of cross partition plate can be realized, beam end damage can be repaired on the basis of meeting pressure condition, can effectively solve swing column type support replacement support thick local pressure shortage, the problem that integrality is not high.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering technology, specifically relating to a support structure for replacing the pendulum-type bearing of a T-beam bridge. Background Technology

[0002] T-beam bridges, introduced to my country in the early 1960s, are large-scale bridges with high structural importance coefficients, typically used in critical river-crossing projects. They are now all in the maintenance or renovation stage. These T-beam bridges typically have steel plate bearings at one end of each span as fixed supports, and concrete pendulum bearings at the other end as movable supports. However, these pendulum bearings are relatively small, with limited lateral stiffness and bearing area. Furthermore, due to lower construction standards at the time, the bearing components are no longer adequate for the demands of current heavy traffic loads. Additionally, due to their age, the upper and lower pin-connected steel components often exhibit severe corrosion, resulting in complete functional loss. They are unable to withstand the deformation caused by temperature changes in the bridge. When individual pendulum columns tilt excessively and cannot be restored, repeated horizontal and vertical impacts from vehicle collisions and temperature fluctuations cause varying degrees of crushing, cracking, and spalling of the concrete, directly leading to beam subsidence and deformation. In severe cases, this poses a risk of beam collapse, creating a significant safety hazard for vehicle operations.

[0003] The main challenges in addressing the aforementioned defects are as follows: The pendulum-type bearings are equipped with upper and lower steel plates and upper and lower pin-connecting steel plates, which are welded to the pre-embedded steel plates. The upper and lower steel plates are small in size and cannot be directly used as the bearing surface for the newly replaced bearings. If the steel plates are calcined and leveled, it will lead to severe carbonization of the main beam concrete, reducing its strength. If a large steel plate matching the bearing area is directly welded, a gap will exist between the bottom of the main beam and the bearing, resulting in poor overall integrity with the beam structure, unclear load-bearing performance, and difficulty in achieving the desired reinforcement effect. Therefore, a new support structure for replacing the pendulum-type bearings of T-beam bridges needs to be proposed to solve these problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a support structure for replacing the swing column bearing of a T-beam bridge, which is simple in structure, reasonable in design and easy to assemble. By connecting the reinforcing bars and installing steel sleeves at the bottom of the transverse diaphragm, and setting a filling layer inside the steel sleeves, the transverse diaphragm can be wrapped and locally pressure-bearing can be achieved. The beam end damage can be repaired while meeting the pressure-bearing conditions. It can effectively solve the problems of insufficient local pressure bearing and low overall integrity when replacing the swing column bearing.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a support structure for replacing the swing column type bearing of a T-beam bridge, including a pad stone set on the top of the cap beam, a reinforcing member set at the bottom of the transverse diaphragm between the T-beams, and a rubber bearing set between the pad stone and the reinforcing member. The reinforcing component includes a steel sleeve set at the bottom of the transverse diaphragm and a filling layer between the steel sleeve and the transverse diaphragm. The steel sleeve is connected to the transverse diaphragm by multiple connecting bars. The steel sleeve is an open steel sleeve at the top. The steel sleeve has a pre-reserved slot for the transverse diaphragm to be engaged. The bottom of the inner side of the steel sleeve is arranged lower than the bottom of the transverse diaphragm.

[0006] The above-mentioned support structure for replacing the swing column bearing of a T-beam bridge includes a steel sleeve that is an open-top cubic steel sleeve. The two side walls of the steel sleeve perpendicular to the diaphragm are reserved with the slots, and the side wall of the steel sleeve parallel to the diaphragm is reserved with a clearance groove.

[0007] The above-mentioned support structure for replacing the swing column bearing of a T-beam bridge has two connecting bars, two through holes for the connecting bars to pass through on the transverse diaphragm, and through holes for the connecting bars to pass through on the two side walls of the steel sleeve parallel to the transverse diaphragm.

[0008] In the above-mentioned support structure for replacing the pendulum-type bearing of a T-beam bridge, one end of the connecting bar is fixed with a limit nut, and the other end of the connecting bar is threaded with a fastening nut.

[0009] In the aforementioned support structure for replacing the pendulum-type bearing of a T-beam bridge, the connecting reinforcement is perpendicular to the transverse diaphragm.

[0010] In the aforementioned support structure for replacing the swing column bearing of a T-beam bridge, multiple stiffening steel plates are provided between the four side walls and the bottom wall of the steel sleeve.

[0011] The aforementioned support structure for replacing the pendulum bearing of a T-beam bridge, wherein the filling layer is a self-compacting concrete filling layer.

[0012] This utility model has the following advantages compared with the prior art: This utility model has a simple structure, reasonable design, and convenient assembly. By connecting the reinforcing bars and installing steel sleeves at the bottom of the transverse diaphragm, and setting a filling layer inside the steel sleeves, it can achieve external wrapping and local pressure bearing of the transverse diaphragm. It can repair beam end damage while meeting the pressure bearing conditions, and can effectively solve the problems of insufficient local pressure bearing and low overall integrity when replacing the bearing thickness of the pendulum type support.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the steel hoop structure.

[0016] Explanation of reference numerals in the attached figures: 1. Cap beam; 2. T-beam; 3. diaphragm; 4. pad stone; 5. rubber bearing; 6. steel sleeve; 7. filling layer; 8. slot; 9. clearance groove; 10. connecting bar; 11. limit nut; 12. fastening nut; 13. stiffening steel plate. Detailed Implementation

[0017] like Figure 1 and Figure 2 As shown, this utility model includes a pad stone 4 set on the top of the cap beam 1, a reinforcing member set at the bottom of the transverse diaphragm 3 between the T beams 2, and a rubber support 5 set between the pad stone 4 and the reinforcing member. The reinforcing component includes a steel sleeve 6 set at the bottom of the transverse diaphragm 3 and a filling layer 7 filled between the steel sleeve 6 and the transverse diaphragm 3. The steel sleeve 6 is connected to the transverse diaphragm 3 by multiple connecting ribs 10. The steel sleeve 6 is a steel sleeve with an open top. The steel sleeve 6 has a pre-reserved slot 8 for the transverse diaphragm 3 to be engaged. The bottom of the inner side of the steel sleeve 6 is arranged lower than the bottom of the transverse diaphragm 3.

[0018] In actual use, a steel sleeve 6 is fitted at the bottom of the transverse diaphragm 3 by connecting bar 10, and a filling layer is set inside the steel sleeve 6. This can achieve external wrapping and local pressure bearing of the transverse diaphragm 3, and can repair beam end damage on the basis of meeting the pressure bearing conditions. It can effectively solve the problems of insufficient local pressure bearing and low overall integrity when replacing the bearing thickness of the pendulum type bearing.

[0019] It should be noted that the steel sleeve 6 can be prefabricated in a standardized manner, which can effectively improve construction efficiency.

[0020] In addition, the steel sleeve 6 is tightly bonded to the roughened main beam and transverse diaphragm 3 with self-compacting concrete, and the integrity of the T-beam and the support is further improved by using through-through fine-rolled threaded steel. Finally, the surface is coated to increase the aesthetics.

[0021] In practice, a transverse diaphragm 3 is installed between adjacent T-beams 2, and the thickness of the rubber support 5 can be adjusted adaptively according to the actual situation.

[0022] In this embodiment, the steel sleeve 6 is a cubic steel sleeve with an open top. The two side walls of the steel sleeve 6 that are perpendicular to the horizontal partition 3 are reserved with the slot 8, and the side wall of the steel sleeve 6 that is parallel to the horizontal partition 3 is reserved with a clearance slot 9.

[0023] In actual use, the clearance slot 9 provides clearance for the main beam.

[0024] It should be noted that the steel sleeve 6 includes a bottom wall and four side walls.

[0025] In this embodiment, there are two connecting ribs 10. The diaphragm 3 has two through holes for the connecting ribs 10 to pass through. The steel sleeve 6 has through holes for the connecting ribs 10 to pass through on its two side walls parallel to the diaphragm 3.

[0026] In actual use, the connecting ribs 10 are made of precision rolled threaded steel, and the two connecting ribs 10 are respectively set on both sides of the relief groove 9.

[0027] In this embodiment, a limiting nut 11 is fixed at one end of the connecting rib 10, and a fastening nut 12 is threaded onto the other end of the connecting rib 10.

[0028] In actual use, the other end of the connecting rib 10 passes through the perforation on one side wall of the steel sleeve 6, the perforation on the diaphragm 3, and the perforation on the other side wall of the steel sleeve 6 in sequence, and is then fastened to the fastening nut 12 to fix the steel sleeve 6.

[0029] It should be noted that the limiting nut 11 and the fastening nut 12 are respectively set close to the two outer side walls of the steel sleeve 6.

[0030] In this embodiment, the connecting rib 10 is perpendicular to the transverse diaphragm 3.

[0031] In this embodiment, multiple reinforcing steel plates 13 are provided between the four side walls and the bottom wall of the steel sleeve 6.

[0032] In actual use, two stiffening steel plates 13 are provided between each side wall and the bottom wall of the steel sleeve 6. The stiffening steel plates 13 are perpendicular to the side wall they are connected to, and the stiffening steel plates 13 are perpendicular to the bottom wall of the steel sleeve 6.

[0033] In this embodiment, the filling layer 7 is a self-compacting concrete filling layer.

[0034] In actual use, standardized prefabricated steel sleeves 6 are fixed to the transverse diaphragms 3 using through-hole precision-rolled threaded steel bars. Self-compacting concrete is then poured to ensure that the steel sleeves 6 are tightly fitted to the roughened main beams and transverse diaphragms 3. After reaching the design strength, the replacement rubber bearings 5 ​​are installed. The overall structure has a clear stress distribution, is simple and aesthetically pleasing, and achieves a good reinforcement effect.

[0035] At the site of replacing the pendulum-type bearing support of the T-beam bridge, after preparing for construction such as scaffolding or hangers, material and equipment, and main beam jacking, the concrete contact surface between the old and new concrete is roughened and cleaned, and after measurement and positioning, holes are drilled in the transverse diaphragm 3, and the dimensions of each component are accurately measured. Feedback is sent to the factory for standardized prefabrication of steel sleeves 6, and holes are drilled in the steel sleeves 6 according to the position of the precision-rolled threaded steel bars. When installing the steel sleeves 6 on site, first clean the debris from the cap beam 1, remove the original pendulum-type bearing body and the upper and lower pin-connecting steel plates; after the processed steel sleeves 6 are inserted from the bottom of the beam and moved upward, they are accurately positioned and clamped between the transverse diaphragm 3 and the main beam, and the gap is sealed with foam glue; the insertion end of the precision-rolled threaded steel bars is aligned with the through hole and the nut of the fixing end of the steel sleeve 6 for effective tightening; self-compacting concrete is poured, the pad stone 4 is redone, and the new rubber bearing 5 is installed. After installation is completed, the next construction process can be carried out.

[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A support structure for replacing the pendulum-type bearing of a T-beam bridge, characterized in that: It includes a pad stone (4) set on top of the cap beam (1), a reinforcing member set at the bottom of the transverse diaphragm (3) between the T beams (2), and a rubber support (5) set between the pad stone (4) and the reinforcing member; The reinforcing component includes a steel sleeve (6) set at the bottom of the diaphragm (3) and a filling layer (7) filled between the steel sleeve (6) and the diaphragm (3). The steel sleeve (6) is connected to the diaphragm (3) by multiple connecting bars (10). The steel sleeve (6) is a steel sleeve with an open top. The steel sleeve (6) has a slot (8) reserved for the diaphragm (3) to be engaged. The bottom of the inner side of the steel sleeve (6) is lower than the bottom of the diaphragm (3).

2. The support structure for replacing the pendulum-type bearing of a T-beam bridge according to claim 1, characterized in that: The steel sleeve (6) is a cubic steel sleeve with an open top. The two side walls of the steel sleeve (6) perpendicular to the diaphragm (3) are reserved with the slot (8), and the side wall of the steel sleeve (6) parallel to the diaphragm (3) is reserved with a clearance slot (9).

3. The support structure for replacing the pendulum-type bearing of a T-beam bridge according to claim 1, characterized in that: The number of connecting ribs (10) is two. Two through holes are provided on the diaphragm (3) for the connecting ribs (10) to pass through. Two through holes are reserved on the two side walls of the steel sleeve (6) that are parallel to the diaphragm (3) for the connecting ribs (10) to pass through.

4. The support structure for replacing the pendulum-type bearing of a T-beam bridge according to claim 3, characterized in that: One end of the connecting rib (10) is fixed with a limit nut (11), and the other end of the connecting rib (10) is threaded with a fastening nut (12).

5. The support structure for replacing the pendulum-type bearing of a T-beam bridge according to claim 3, characterized in that: The connecting rib (10) is perpendicular to the diaphragm (3).

6. The support structure for replacing the pendulum-type bearing of a T-beam bridge according to claim 2, characterized in that: Multiple stiffening steel plates (13) are provided between the four side walls and the bottom wall of the steel sleeve (6).

7. The support structure for replacing the pendulum-type bearing of a T-beam bridge according to claim 1, characterized in that: The filling layer (7) is a self-compacting concrete filling layer.

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