Steel plate and concrete combined bridge panel
Through the design of combined bridge panels of steel plate and concrete, the problem of insufficient durability and fatigue resistance of bridge panels is solved, and the effects of light weight, good durability and strong bending torque are achieved, reducing the amount of brackets during construction.
Patent Information
- Application Number
- CN202422259782.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing bridge panels have shortcomings in terms of durability and fatigue resistance. Traditional reinforced concrete bridge panels have large self-weight and complex structures, and orthogonal opposite-sex steel bridge panels are prone to fatigue cracks.
The steel plate and concrete composite bridge panel design is adopted, including the upper steel plate, the lower steel plate and the corrugated steel plate sandwiched between the two. The corrugated steel plate is filled with steel fiber concrete and connected by connecting bolts.
It improves the durability and fatigue resistance of the bridge panel, while reducing the weight and the amount of bracket during construction.
Smart Images
Figure CN223074600U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a steel plate and concrete combined bridge deck. Background Art
[0002] Due to being exposed to the natural environment for a long time, the bridge deck is eroded by the action of natural environments such as sunlight, rain and snow, and directly bears the wheel load. Therefore, it is one of the components with the most complex disease causes and the highest disease incidence rate in the bridge structure.
[0003] Traditional steel bridge decks include reinforced concrete bridge decks and orthotropic steel bridge decks. The existing reinforced concrete bridge decks have advantages such as simple production and good economy, but have deficiencies such as large self-weight, poor ductility, poor tensile performance, poor shear performance, and poor durability. In addition, the shrinkage and creep of concrete will also bring additional stress to the steel beam, affecting the safety of the structure; while the existing orthotropic steel bridge decks have advantages such as light self-weight and high strength, but their structures are complex and there are many welds, and fatigue cracks are likely to occur under the repeated action of wheel loads. Summary of the Invention
[0004] The purpose of the utility model is to provide a steel plate and concrete combined bridge deck aiming at the defects of the prior art.
[0005] To achieve the above purpose, the utility model can adopt the following technical solutions:
[0006] The steel plate and concrete combined bridge deck described in the utility model includes an upper steel plate and a lower steel plate arranged in parallel, and a corrugated steel plate clamped between the upper steel plate and the lower steel plate; the top of the wave crest of the corrugated steel plate has a peak horizontal section flatly attached to the bottom surface of the upper steel plate, the bottom of the wave trough of the corrugated steel plate has a trough horizontal section flatly attached to the top surface of the lower steel plate, connection bolts are vertically penetrated and fixed at the joint between the peak horizontal section and the upper steel plate, long bolts are vertically penetrated and fixed at the joint between the trough horizontal section and the lower steel plate, and steel fiber concrete is filled in each wave trough of the corrugated steel plate.
[0007] Specifically, the thickness of the corrugated steel plate is 8 - 12 mm, the corner radius R of the corrugated steel plate is 15 times the thickness of the corrugated steel plate; the wave height H of the corrugated steel plate is 160 - 240 mm, the center distance D1 between adjacent wave crests of the corrugated steel plate is the same as the center distance D2 between adjacent wave troughs, both are 400 - 1200 mm; the thicknesses of the upper steel plate and the lower steel plate are greater than or equal to the thickness of the corrugated steel plate.
[0008] The advantages of the utility model are that it has the characteristics of light self-weight and good durability compared with the traditional reinforced concrete bridge deck, and has strong bending and torsion resistance and high fatigue resistance compared with the traditional orthotropic steel bridge deck; in addition, due to the construction method of layered installation of the upper steel plate, corrugated steel plate and lower steel plate, the bearing capacity of the steel beam continuously increases during the construction process, and the amount of brackets can be reduced. Brief Description of the Drawings
[0009] Figure 1 is a schematic structural diagram of the utility model.
[0010] Figure 2 is Figure 1 a schematic structural diagram of the corrugated steel plate in Detailed Description of the Preferred Embodiment
[0011] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0012] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0013] As Figure 1 , 2 shown, the steel plate and concrete composite bridge deck of the present utility model includes an upper steel plate 1 and a lower steel plate 2 arranged in parallel, and a corrugated steel plate 3 clamped between the upper steel plate 1 and the lower steel plate 2. Among them, the top of the wave crest of the corrugated steel plate 3 has a peak horizontal section 4 flatly attached to the bottom surface of the upper steel plate 1, and the bottom of the wave valley of the corrugated steel plate 3 has a valley horizontal section 5 flatly attached to the top surface of the lower steel plate 2; at the joint between the peak horizontal section 4 and the upper steel plate 1, connecting bolts 6 are vertically penetrated, and at the joint between the valley horizontal section 5 and the lower steel plate 2, long bolts 7 are vertically penetrated; in addition, steel fiber concrete 8 is filled in each wave valley of the corrugated steel plate 3.
[0014] Specifically, the thickness of the corrugated steel plate 3 is 8-12 mm, the corner radius R is 15 times the thickness, the wave height H is 160-240 mm, the center distance D1 between adjacent wave crests is the same as the center distance D2 between adjacent wave valleys, both are 400-1200 mm; at the same time, the thickness of the upper steel plate 1 and the lower steel plate 2 should be greater than or equal to the thickness of the corrugated steel plate 3.
[0015] During paving, first install the lower steel plate 2; then lay the corrugated steel plate 3 on the lower steel plate 2, and fix them together with long bolts 7 at the joint between the bottom valley horizontal section 5 of the corrugated steel plate 3 and the lower steel plate 2. Two rows of long bolts 7 are arranged along the length direction on each bottom valley horizontal section 5; then, pour steel fiber concrete 8 into each wave valley of the corrugated steel plate 3 until the entire wave valley is filled. At this time, due to the certain length of the long bolts 7, when the wave valley is filled with steel fiber concrete 8, the long bolts 7 can form shear connectors in the steel fiber concrete 8; after the steel fiber concrete 8 is poured, the upper steel plate 1 can be laid on the corrugated steel plate 3, and fixed together with connecting bolts 6 at the joint between the peak horizontal section 4 of the corrugated steel plate 3 and the upper steel plate 1. Two rows of connecting bolts 6 are arranged along the length direction on each peak horizontal section 4, thus completing the paving of the entire steel plate and concrete composite bridge deck.
[0016] The entire steel plate and concrete composite bridge deck is lighter in self-weight and better in durability than the traditional reinforced concrete bridge deck, and has stronger bending and torsion resistance and higher fatigue resistance than the traditional orthotropic steel bridge deck; in addition, due to the construction method of installing the upper steel plate 1, the corrugated steel plate 3 and the lower steel plate 2 in layers, the bearing capacity of the steel beam continuously increases during the construction process, which can reduce the amount of brackets used.
Claims
1. A steel plate and concrete composite bridge deck, characterized in that: It includes an upper steel plate and a lower steel plate which are arranged in parallel, and a corrugated steel plate clamped between the upper steel plate and the lower steel plate; the top of the wave crest of the corrugated steel plate has a peak horizontal section that lies flat on the bottom surface of the upper steel plate, and the bottom of the wave trough of the corrugated steel plate has a trough horizontal section that lies flat on the top surface of the lower steel plate. Connecting bolts are vertically penetrated and fixed at the joint between the peak horizontal section and the upper steel plate, and long bolts are vertically penetrated and fixed at the joint between the trough horizontal section and the lower steel plate. Steel fiber concrete is filled in each wave trough of the corrugated steel plate.
2. The steel plate and concrete composite bridge deck according to claim 1, characterized in that: The thickness of the corrugated steel plate is 8 - 12 mm, and the corner radius R of the corrugated steel plate is 15 times the thickness of the corrugated steel plate.
3. The steel plate and concrete composite bridge deck according to claim 2, characterized in that: The wave height H of the corrugated steel plate is 160 - 240 mm, and the center distance D1 between adjacent wave crests of the corrugated steel plate is the same as the center distance D2 between adjacent wave troughs, both being 400 - 1200 mm.
4. The steel plate and concrete combined bridge deck according to claim 2, characterized in that: The thickness of the upper steel plate and the lower steel plate is greater than or equal to the thickness of the corrugated steel plate.