U-shaped steel curtain board structure for treating leakage water of expansion joint of T-beam bridge

Abstract

The utility model discloses a U-shaped steel curtain board structure for treating leakage water of an expansion joint of a T-beam bridge, which relates to the field of treatment of leakage water of an expansion joint of a bridge, and is characterized by comprising a bottom plate, a side plate and a wing plate which are integrally connected to form a U-shaped structure; the bottom plate and the wing plate are respectively connected with concrete at the bottom of the flange plate of the T-shaped beam; a telescopic V-shaped groove is formed in the middle of the bottom plate; the U-shaped steel curtain boards comprise U-shaped steel curtain boards at bridge piers and U-shaped steel curtain boards at bridge abutments; the U-shaped steel curtain board at the bridge abutment comprises a bottom board, two side boards and a wing board, and the side board which is not directly connected with the wing board is connected with concrete at the back of the bridge abutment in an anchoring mode. And the bottom plate and the wing plate are respectively anchored and connected with concrete at the bottom of the flange plate of the T-shaped beam. The water leakage treatment structure at the expansion joint is optimized, the catchment direction of water flow at the expansion joint of the bridge is changed, pollution to the T-shaped beam plate and the abutment is effectively prevented, the durability of components is improved, and the service life of the bridge is prolonged.

Description

Technical Field

[0001] The utility model relates to treatment equipment for water leakage at a bridge expansion joint, in particular to a U-shaped steel shielding plate structure for treating water leakage at a T-beam bridge expansion joint. Background Art

[0002] After field investigations on a large number of ordinary national and provincial trunk road bridges, it was found that the ends of some expansion joints only extended to the inside of the concrete anti-collision guardrail, and the steel frames at the ends of the expansion joints were not bent up and buried in the guardrails, and the length of the expansion joints was seriously insufficient. The main source of drainage at the expansion joints of bridges is atmospheric precipitation. The water leaking from the expansion joints of bridges often flows to the top of the pier cap or the platform cap, and in severe cases, it will seep into the entire cap or platform body, which will not only corrode the cap, platform cap, platform body and support, causing the cap and platform cap concrete to alkali-reverse and the structural steel bars to rust, accelerate the destruction of reinforced concrete, and cause the concrete to break and fall off, but also cause the support to rust and fail, seriously affecting the normal shrinkage of the beam body. The resulting quality risks will shorten the service life of the bridge, increase the safety risks of the bridge, and affect the comfort and safety of driving.

[0003] In addition, during the bridge design phase, the influence of the environment of the bridge location, the temperature changes of the surrounding climate, and the precipitation in the rainy season were not fully considered. The spacing between the bridge deck drainage holes was too large, the longitudinal and transverse slopes of the bridge deck were not designed reasonably, and the number and size of the drainage holes were not calculated accurately, which caused the water on the bridge deck to be discharged from the expansion joints. Therefore, when designing the maintenance and reinforcement of ordinary national and provincial trunk road bridges, it is particularly important to optimize the treatment structure for water leakage at the expansion joints. Utility Model Content

[0004] The purpose of the utility model is to provide a U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges in response to the above-mentioned problems. Through the design of the U-shaped steel shield structure and the provision of a retractable V-shaped groove in the middle of the bottom plate, the water flow direction at the expansion joint of the bridge is changed to prevent siltation and effectively prevent pollution of the T-beam plate and piers.

[0005] The technical solution of the utility model is as follows:

[0006] The utility model discloses a U-shaped steel shielding plate structure for treating water leakage in expansion joints of a T-beam bridge, comprising a bottom plate, side plates and wing plates, wherein the bottom plate, side plates and wing plates are integrally connected to form a U-shaped structure; the bottom plate and wing plates are respectively connected to the bottom concrete of the T-beam flange plate; a retractable V-shaped groove is arranged in the middle of the bottom plate.

[0007] In the above structure, the U-shaped structure can collect the water leakage from the contraction joint, and the V-shaped groove can change the direction of water flow at the expansion joint, avoiding the water leaking from the expansion joint of the bridge from flowing to the top of the pier cap or the platform cap, thereby solving the water leakage problem at the expansion joint.

[0008] Furthermore, the U-shaped steel shield includes a U-shaped steel shield at the pier and a U-shaped steel shield at the abutment; the U-shaped steel shield at the abutment includes a bottom plate, two side plates and a wing plate, and the side plates that are not directly connected to the wing plates are anchored to the concrete on the back of the abutment; the bottom plate and the wing plates are respectively anchored to the bottom concrete of the T-beam flange plate.

[0009] For the above structure, since there is only one side wall at the abutment, only one wing plate is needed for anchoring connection, and the other side plate is anchored to the concrete back of the abutment.

[0010] Furthermore, the U-shaped steel shield at the pier includes a bottom plate, two side plates and two wing plates. One end of the two side plates is respectively connected to the two ends of the bottom plate, and the other end is respectively connected to the two wing plates. The bottom plate and the two wing plates are respectively anchored to the concrete at the bottom of the T-beam flange plate.

[0011] For the above structure, due to the structure at the pier, the U-shaped steel shield at the pier needs to be designed with two wing plates, and the two wing plates are respectively anchored and connected to the concrete at the bottom of the T-beam flange plate.

[0012] Furthermore, the side panels and wing panels are respectively connected to the concrete anchors at the bottom of the T-beam flange panels by anchor bolts and steel adhesive.

[0013] In the above structure, the anchor bolts can fix the side panels and the wing panels, and the use of adhesive steel can ensure that the wing panels or side panels of the U-shaped steel shield are firmly bonded to the concrete surface, making it more secure.

[0014] Furthermore, the bottom plate is connected to the concrete anchor at the bottom of the T-beam flange plate through a screw rod; the anchor bolts and screw rod ends are connected to the concrete base material of the T-beam flange plate through embedded anchor glue respectively.

[0015] In the above structure, the use of anchor glue can ensure that the end of the screw rod or anchor bolt is firmly connected to the concrete base material of the T-beam flange plate.

[0016] Furthermore, the bottom plate is horizontally inclined downward at an angle of 15°.

[0017] The above structure, with the bottom plate tilted horizontally downward, can meet the drainage needs and make it easier to drain water.

[0018] Furthermore, a water retaining strip is provided at the bottom of the T-beam flange plate, and a water retaining strip is provided at each end of the expansion joint.

[0019] Furthermore, the number of the V-shaped grooves is at least five and they are evenly distributed along the length direction of the bottom plate.

[0020] Furthermore, the steel bonding adhesive is RFCE-T coated steel bonding structural adhesive; the rebar anchoring adhesive is a special modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive.

[0021] Furthermore, the U-shaped steel shield is arranged at the F-80 type expansion joint or the F-160 type expansion joint.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0023] 1. The utility model optimizes the treatment structure of water leakage at the expansion joint, and solves the problem that the water leaking from the expansion joint of the bridge often flows to the top of the bridge pier cap or the platform cap.

[0024] 2. The utility model collects the leaking water at the expansion joint and changes the direction of the water flow at the expansion joint of the bridge, effectively preventing the pollution of the T-beam and pier, improving the durability of the components and extending the service life of the bridge.

[0025] 3. The design of the retractable V-shaped groove of the utility model can not only prevent silt accumulation, but also adapt to the expansion and contraction deformation of the bridge at the pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall arrangement of the U-shaped steel shield at the bridge pier in the utility model;

[0027] Figure 2 This is a schematic diagram of the U-shaped steel shield structure at the middle bridge pier of the utility model;

[0028] Figure 3 This is a schematic diagram of the U-shaped steel shield structure at the abutment of the utility model;

[0029] Figure 4 It is a cross-sectional view of the U-shaped steel shield in the utility model at the wing plate along the center of the anchor bolt.

[0030] Figure markings: 1-left wing plate of steel shield, 2-right wing plate of steel shield, 3-left plate of steel shield, 4-right plate of steel shield, 5-bottom plate of steel shield, 6-V-groove, 7-anchor bolt, 8-screw rod, 9-RFCE-T coated steel structure adhesive, 10-embedded anchor adhesive, 11-T beam flange plate concrete, 12-U-shaped steel shield. DETAILED DESCRIPTION

[0031] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0033] The utility model discloses a U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges, including a bottom plate, side plates and wing plates, wherein the bottom plate, side plates and wing plates are integrally connected to form a U-shaped structure; the bottom plate and wing plates are respectively connected to the bottom concrete of the T-beam flange plate. In order to adapt to the expansion and contraction deformation of the bridge at the pier and abutment and prevent sediment accumulation, a retractable V-shaped groove 6 is provided in the middle of the bottom plate of the U-shaped steel shield 12. The number of the V-shaped grooves 6 is at least five, and they are evenly distributed along the length direction of the bottom plate. The U-shaped steel shield includes a U-shaped steel shield at the pier and a U-shaped steel shield at the abutment. Figure 1 This is a schematic diagram of the global arrangement of U-shaped steel shields at the bridge piers. The U-shaped steel shields are set at the water leakage position of the T-beam bridge expansion joint at the bridge piers.

[0034] like Figure 2 and 4 As shown, the U-shaped steel shield at the bridge pier includes a bottom plate, two side plates and two wing plates, namely, the left wing plate 1 of the steel shield, the right wing plate 2 of the steel shield, the left plate 3 of the steel shield, the right plate 4 of the steel shield, and the bottom plate 5 of the steel shield. One end of the two side plates are respectively connected to the two ends of the bottom plate, and the other end is respectively connected to the two wing plates. The bottom plate and the two wing plates are respectively anchored to the concrete at the bottom of the T-beam flange plate. The U-shaped steel shield at the bridge pier is anchored to the wing plates on both sides of the U-shaped steel shield and the concrete 11 of the T-beam flange plate by anchor bolts 7 and steel glue. The bottom plate of the U-shaped steel shield is anchored to the concrete at the bottom of the T-beam flange plate by screw rods 8. The screw rods 8 are arranged on both sides of the expansion joint, and the number of screw rods 8 arranged on each side is preferably 2-3.

[0035] like Figure 3 and 4As shown, the U-shaped steel shield at the abutment includes a bottom plate, two side plates and a wing plate. The side plates that are not directly connected to the wing plates are anchored to the concrete at the back of the abutment; the bottom plate and the wing plates are anchored to the concrete at the bottom of the T-beam flange plate respectively. The U-shaped steel shield at the pier is anchored to the concrete at the bottom of the T-beam flange plate by anchor bolts 7 and steel glue. The bottom plate 5 of the U-shaped steel shield is anchored to the concrete at the bottom of the T-beam flange plate by screw rods 8.

[0036] like Figure 4 As shown, the bottom plate width of the U-shaped steel shield matches the width of the bridge expansion joint, which is usually 60-80 cm. The length of the side panels and wing panels can adapt to the shape and size of the T-beam flange plate, the bottom plate inclination angle can meet the drainage requirements, and the bottom plate is horizontally inclined downward at an angle of 15°. The diameter and length of the anchor bolts and screw rods are selected according to the size and weight of the U-shaped steel shield and the geological conditions of the installation location as needed. In an embodiment, the U-shaped steel shield can be set at a 80-type expansion joint or a 160-type expansion joint.

[0037] In one embodiment, the bottom of the T-beam flange plate is made of cement mortar to make a water barrier strip. The water barrier strip can be roughened linearly at an appropriate position of the flange plate, made of cement mortar, and one strip is set at each end of the expansion joint.

[0038] In another embodiment, the steel adhesive is a high-strength, high-viscosity adhesive, such as RFCE-T coated steel structural adhesive 9, which is used to ensure that the wing plate or side plate of the U-shaped steel shield is firmly bonded to the concrete surface. The anchoring adhesive is a special modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive, which is used to ensure that the end of the screw rod or anchor bolt is firmly connected to the concrete substrate of the T-beam flange plate. The material of the U-shaped steel shield is a corrosion-resistant and wear-resistant steel, such as stainless steel or high-strength carbon steel.

[0039] The following is a specific embodiment of the present invention:

[0040] The structural form of a national and provincial trunk highway bridge is 5×20m+4×20m+7×20m, with a prestressed concrete structure continuous T-beam, totaling three sections. The water on the bridge deck at each expansion joint flows out from the end of the expansion joint, causing pier pollution. U-shaped steel shields are set on both sides of each expansion joint. The specific implementation method is as follows:

[0041] S1: Construction layout. Determine the installation position and size of the U-shaped steel shield.

[0042] S2: Chisel and clean the concrete base surface. For the concrete at the contact area between the U-shaped steel shield wing and the T-beam wing, and the concrete at the contact area between the U-shaped steel shield web and the abutment back at the abutment, use an angle grinder, hand chisel or other tools to chisel away the loose part of the concrete, so that the hard and dense concrete base material is exposed, and ensure that there is no oil, grease, wax, dust and attachments on the surface that affect the adhesive performance of the steel adhesive, so as to improve the bonding strength between the U-shaped steel shield and the concrete.

[0043] S3: Drill holes and plant reinforcement with screws.

[0044] S4: Drilling holes in the bottom plate and wing plate of the U-shaped steel shield.

[0045] S5: Installation of U-shaped steel shield.

[0046] The utility model discloses a treatment structure for water leakage in expansion joints at abutments and piers of small and medium span continuous T-beam bridges, comprising a U-shaped steel shield, which comprises a bottom plate, a side plate and a wing plate. The U-shaped steel shield comprises a U-shaped steel shield at a pier and a U-shaped steel shield at abutments. The wing plates on both sides of the U-shaped steel shield at the pier are anchored and connected to the concrete at the bottom of the T-beam flange plate by bolts and steel adhesive. One end of the U-shaped steel shield at the abutment is anchored and connected to the concrete back of the abutment by bolts and steel adhesive, and the wing plates of the U-shaped steel shield are anchored and connected to the concrete at the bottom of the T-beam flange plate by bolts and steel adhesive at the other end. The bottom plate of the U-shaped steel shield is anchored and connected to the concrete at the bottom of the T-beam flange plate by screw rods. The utility model can change the direction of water flow at the expansion joint of the bridge, effectively prevent pollution of the T-beam plate and the pier, improve the durability of the components, and extend the service life of the bridge.

[0047] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges, characterized in that: It includes a bottom plate, side plates and wing plates, which are integrally connected to form a U-shaped structure; the bottom plate and wing plates are respectively connected to the bottom concrete of the T-beam flange plate; a retractable V-shaped groove is arranged in the middle of the bottom plate.

2. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 1 is characterized in that: The U-shaped steel shield includes a U-shaped steel shield at the pier and a U-shaped steel shield at the abutment; the U-shaped steel shield at the abutment includes a bottom plate, two side plates and a wing plate, and the side plates that are not directly connected to the wing plates are anchored to the concrete on the back of the abutment; the bottom plate and the wing plates are respectively anchored to the bottom concrete of the T-beam flange plate.

3. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 2 is characterized in that: The U-shaped steel shield at the pier includes a bottom plate, two side plates and two wing plates. One end of the two side plates is respectively connected to the two ends of the bottom plate, and the other end is respectively connected to the two wing plates. The bottom plate and the two wing plates are respectively anchored to the concrete at the bottom of the T-beam flange plate.

4. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 1 is characterized in that: The side plates and wing plates are respectively connected to the concrete anchors at the bottom of the T-beam flange plates by anchor bolts and steel adhesive.

5. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 4 is characterized in that: The bottom plate is connected to the concrete anchor at the bottom of the T-beam flange plate through a screw rod; the anchor bolts and the ends of the screw rods are connected to the concrete base material of the T-beam flange plate through embedded anchor glue respectively.

6. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 1 is characterized in that: The bottom plate is tilted downward at an angle of 15°.

7. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 1 is characterized in that: A water retaining strip is arranged at the bottom of the T-beam flange plate, and a water retaining strip is arranged at each end of the expansion joint.

8. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 1 is characterized in that: The number of the V-shaped grooves is at least five and they are evenly distributed along the length direction of the bottom plate.

9. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 5 is characterized in that: The steel bonding adhesive is RFCE-T coated steel bonding structural adhesive; the rebar anchoring adhesive is a special modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive.

10. The U-shaped steel shield structure for treating water leakage in expansion joints of T-beam bridges according to claim 1 is characterized in that: The U-shaped steel shield is set at the F-80 expansion joint or F-160 expansion joint.

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