CN218813144U

CN218813144U - Fitting for realizing friction type connection of corrugated steel plates

Info

Publication number: CN218813144U
Application number: CN202223034615.5U
Authority: CN
Inventors: 李百建; 符锌砂
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-04-07
Anticipated expiration: 2032-11-15

Abstract

The utility model relates to a corrugated steel connects technical field, concretely relates to realize accessory that corrugated steel plate friction type is connected, it includes: a first curved plate, a second curved plate, a first flat plate, a second flat plate, a first end plate, and a second end plate; the cold pressing blocks with radian are surrounded by the panels; a plurality of bolt holes are formed in the middle of the cold pressing block along the longitudinal direction; the surface radian of the first curved plate is equal to the outer corrugation radian of the corrugated steel plate, and the surface radian of the second curved plate is equal to the inner corrugation surface radian of the corrugated steel plate; the surface radian of the first curved plate is greater than that of the second curved plate. The utility model discloses settle between the corrugated steel plate that overlaps, can fill its space to because this accessory intensity is the same with corrugated steel plate intensity, can guarantee the reliability of seam intensity, and also can improve the joint rigidity of seam.

Description

Accessory for realizing friction type connection of corrugated steel plates

Technical Field

The utility model relates to a corrugated steel connects technical field, and more specifically says that it relates to a realize accessory that corrugated steel plate friction type is connected.

Background

In recent years, china pays more and more attention to environmental protection and advocates low-carbon traffic, and particularly enters the development period of fourteen-five, so that the energy conservation and carbon reduction of traffic transportation are mainly promoted, the resource and energy conservation and the ecological environment protection are put in more prominent positions of the development of the traffic industry, the construction standardization and the industrial construction are promoted, the innovation of construction materials, processes and technologies is encouraged, the application of steel structure bridges is promoted, the whole life cycle cost of roads is reduced, the harmonious development of traffic and nature is promoted, and powerful support is provided for accelerating the construction of strong traffic countries. Under such a large background, concrete and masonry buildings made of traditional materials such as sand, stone and cement have been gradually replaced by metal structures such as light steel and aluminum, and a corrugated steel plate bridge structure is a medium and small span steel structure bridge which has been widely used.

The corrugated steel plate bridge structure is a flexible bridge structure, is formed by processing carbon structural steel, low-alloy high-strength structural steel or weather-resistant structural steel into a curved corrugated shape, performing anticorrosive treatment and connecting through high-strength bolts, and can adapt to different landforms and highways with different trends and linear shapes. The corrugated steel plate has good displacement compensation characteristics, can give full play to the characteristics of strong tensile property and excellent deformation performance of steel, counteracts the structural internal force caused by uneven settlement, reduces the stress concentration phenomenon, and improves the service quality of roads, and the corrugated steel bridge is more suitable for areas with lower foundation bearing capacity such as soft soil, expansive soil, collapsible loess and the like and areas with frequent earthquakes; in addition, the corrugated steel structure can utilize materials according to local conditions, has the advantages of convenient construction, environmental protection, low manufacturing cost, short construction period and the like, can effectively reduce the generation of construction waste, is assembled, manufactured and installed, has remarkable economic and social benefits, is widely applied to many provinces such as Qinghai, tibet, hunan, anhui, inner Mongolia and the like, and has remarkable economic and social benefits.

The corrugated steel plate is a structural corrugated plate with uniform specification pressed by a mould. Corrugated steel plates adopted in one project have the same corrugated section (namely, the corrugated size and the plate thickness are the same), and the corrugated steel plates are spliced by bolts to form a corrugated steel structure.

Taking fig. 3 as an example, the semicircular arch ring is formed by splicing three corrugated steel plates, and the top plate is arranged at the upper parts of the two bottom plates. The corrugated steel sheets constituting this structure were all the same in cross-sectional size, and assuming that the corrugated cross-section shown in fig. 4 was employed, the corrugated size was 200 × 55 × 5mm, the inner radius at the peak and valley was 53mm, and the outer radius was 58mm (inner radius + sheet thickness 5 mm).

Then, the cross-sectional characteristics of two corrugated steel plates with the same corrugation size when being overlapped up and down are shown in fig. 4, and since the inner radius 53mm at the wave crest and the wave trough is smaller than the outer radius 58mm, a gap is formed at the overlapping position of the wave crest and the wave trough, and the positions of straight line sections of the corrugations are overlapped.

The voids increase with increasing corrugation size and increasing plate thickness, which is detrimental to bolted connections. The high-strength bolt has two connection modes, namely pressure-bearing connection and friction connection, wherein the friction connection requires that the surfaces of two connected steel plates are in close contact and need a certain friction coefficient, but the steel plates are not in contact in the process of overlapping the corrugated steel plates up and down; in consideration of sealing, when the corrugated steel plates are spliced, a sealing rubber mat is arranged at a joint, and the rubber mat reduces the friction coefficient between the two steel plates; moreover, the surface of the corrugated steel plate is galvanized, and the friction coefficient is further reduced. In view of the above, the steel corrugated plate cannot realize the friction type connection.

When unable realization friction type is connected, the joint position can make the corrugated steel structure produce small dynamic displacement under the repeated action of vehicle dynamic load because the existence in space (usually can fill the space with sealed glue or rubber gasket), and this is very unfavorable to the durability and the fatigue of seam to so that certain other engineering appears the bolt and rocks and the nut phenomenon that drops, and this can influence structure safety.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned not enough, the utility model provides a can realize accessory that corrugated steel seam friction type is connected settles this accessory between the corrugated steel board that overlaps, can fill its space to because this accessory intensity is the same with corrugated steel board intensity, can guarantee the reliability of seam intensity, and also can improve the joint rigidity of seam.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a fitting for effecting a friction type connection of corrugated steel plates, comprising: a first curved plate, a second curved plate, a first flat plate, a second flat plate, a first end plate, and a second end plate; one side of the first curved plate is fixedly connected with one side of the first flat plate, and the other side of the first curved plate is fixedly connected with one side of the second flat plate; one side of the second curved plate is fixedly connected with the other side of the first flat plate, and the other side of the second curved plate is fixedly connected with the other side of the second flat plate; the first end panel is fixedly connected with one end of the first curved plate, one end of the second curved plate, one end of the first flat panel and one end of the second flat panel respectively; the second end plate is respectively and fixedly connected with the other end of the first curved plate, the other end of the second curved plate, the other end of the first flat plate and the other end of the second flat plate; the first curved plate, the second curved plate, the first flat plate, the second flat plate, the first end plate and the second end plate form a solid cold pressing block with radian; a plurality of bolt holes are formed in the middle of the cold pressing block along the longitudinal direction; the surface radian of the first curved plate is equal to the outer corrugation radian of the corrugated steel plate, and the surface radian of the second curved plate is equal to the inner corrugation surface radian of the corrugated steel plate; the surface radian of the first curved plate is greater than that of the second curved plate.

Preferably, the first curved plate has the same longitudinal curvature as that of the deck plate.

Preferably, the second curved plate has the same longitudinal curvature as the deck plate.

Preferably, the pitch of the bolt holes is the same as that of the corrugated steel plate; the aperture of the bolt hole is the same as that of the bolt of the corrugated steel plate.

Preferably, the surfaces of the first curved plate, the second curved plate, the first flat plate, the second flat plate, the first end panel and the second end panel are all sand blasting roughened surfaces.

The utility model discloses following beneficial effect has: and (1) the gap existing in the current assembly method can be sealed and filled. (2) The friction connection of corrugated steel plate joints can be realized, and the rigidity and fatigue resistance of the assembled structure are improved. (3) The loosening and falling phenomena of the bolt in the vibration environment can be effectively reduced. (4) The rigidity and the sealing performance of the corrugated steel plate joint can be greatly improved, so that the corrugated steel plate joint has good performance and can be used in a vibration environment.

Drawings

Fig. 1 is a schematic structural diagram I of the present invention;

fig. 2 is a schematic structural diagram II in the present invention;

fig. 3 is a mounting position diagram I of the present invention;

fig. 4 is a mounting position diagram II of the present invention;

fig. 5 is a cross-sectional view of the present invention;

fig. 6 is a side view of the present invention;

fig. 7 is a mounting position diagram III of the present invention.

In the figure: 1. a first curved plate; 2. a second curved plate; 3. a first flat panel; 4. a second flat panel; 5. a first end panel; 6. a second end panel; 7. cold pressing the block; 71. bolt holes.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced device or element must be in a particular orientation, constructed and operated, and therefore should not be construed as limiting the present invention.

The present invention will be described in detail with reference to the accompanying drawings and examples.

The utility model provides a realize accessory that corrugated steel plate friction type is connected, include: a first curved plate 1, a second curved plate 2, a first flat plate 3, a second flat plate 4, a first end plate 5 and a second end plate 6; one side of the first curved plate 1 is fixedly connected with one side of the first flat plate 3, and the other side of the first curved plate is fixedly connected with one side of the second flat plate 4; one side of the second curved plate 2 is fixedly connected with the other side of the first flat plate 3, and the other side of the second curved plate is fixedly connected with the other side of the second flat plate 4; the first end panel 5 is respectively and fixedly connected with one end of the first curved plate 1, one end of the second curved plate 2, one end of the first flat panel 3 and one end of the second flat panel 4; the second end plate 6 is respectively and fixedly connected with the other end of the first curved plate 1, the other end of the second curved plate 2, the other end of the first flat plate 3 and the other end of the second flat plate 4; the first curved plate 1, the second curved plate 2, the first flat plate 3, the second flat plate 4, the first end plate 5 and the second end plate 6 are formed into a cold pressing block 7 which has radian and is solid; a plurality of bolt holes 71 are formed in the middle of the cold pressing block 7 along the longitudinal direction; the surface radian of the first curved plate 1 is equal to the outer corrugation radian of the corrugated steel plate, and the surface radian of the second curved plate 2 is equal to the inner corrugation surface radian of the corrugated steel plate; the surface radian of the first curved plate 1 is larger than that of the second curved plate 2.

As shown in fig. 1 to 4, in the present embodiment, the cold press block 7 (installed at a position a in fig. 3) is integrally cold-formed from a steel sheet, and has 6 faces corresponding to the surface of the first curved plate 1, the surface of the second curved plate 2, the surface of the first flat plate 3, the surface of the second flat plate 4, the surface of the first end plate 5, and the surface of the second end plate 6, respectively. The material of the cold pressing block 7 is consistent with that of the corrugated steel. And 3 bolt holes 71 are formed in the middle of the cold pressing block 7 along the longitudinal direction. The surface radian (radius) of the first curved plate 1 is equal to the outer corrugation radian (radius) of the corrugated steel plate, namely the upper surface of the cold pressing block 7 is attached to the outer corrugation of the corrugated steel plate (position C in figure 4); the surface radian (radius) of the second curved plate 2 is equal to the inner corrugation radian (radius) of the corrugated steel plate, namely the lower surface of the cold pressing block 7 is attached to the inner corrugation part (D part in figure 4) of the corrugated steel plate. The cold pressing block 7 is positioned between the gaps (B in figure 4) of the corrugated steel plates which are stacked up and down, so that bolts penetrate through the corresponding bolt holes 71, and the upper and lower corrugated steel plates are assembled after the bolts are screwed down; it should be noted that: the cold block 7 can only be placed at the wave crest or wave trough (shown in fig. 7) of the corrugated steel plate, and cannot be placed continuously.

Further, in order to improve the effect of the cold-pressing block 7 adhering to the upper and lower deck corrugated steel plates, the longitudinal curvature of the first curved plate 1 is the same as the longitudinal curvature of the deck corrugated steel plate, that is, the lateral curvature of the cold-pressing block 7 (the curvature of the broken line E in fig. 6) is the same as the longitudinal curvature of the deck corrugated steel plate.

Further, in order to improve the effect of the cold-pressing block 7 in contact with the upper and lower deck corrugated steel plates, the longitudinal curvature of the second curved plate 2 is the same as the longitudinal curvature of the deck corrugated steel plate, i.e., the side curvature of the cold-pressing block 7 (the curvature of the broken line E in fig. 6) is the same as the longitudinal curvature of the deck corrugated steel plate.

Further, in order to improve the attaching and fixing effect of the cold pressing block and the upper and lower corrugated steel plates, the pitch of the bolt holes 71 is the same as that of the corrugated steel plates; the hole diameter of the bolt hole 71 is also the same as the hole diameter of the corrugated steel plate.

Furthermore, in order to increase the rigidity and the sealing performance of the corrugated steel plate joint and enable the corrugated steel plate joint to have good performance for a vibration environment, the surfaces of the first curved plate 1, the second curved plate 2, the first flat plate 3, the second flat plate 4, the first end plate 5 and the second end plate 6 need to be subjected to roughening surface treatment such as sand blasting pills, namely the surface of the cold pressing block 7 needs to be subjected to roughening surface treatment such as sand blasting pills.

In summary, the utility model discloses contrast prior art, following beneficial effect has at least: 1) The gap existing in the current assembly method can be sealed and filled. (2) The friction connection of corrugated steel plate joints can be realized, and the rigidity and fatigue resistance of the assembled structure are improved. (3) The loosening and falling phenomena of the bolt in the vibration environment can be effectively reduced. (4) The rigidity and the sealing performance of the corrugated steel plate joint can be greatly improved, so that the corrugated steel plate joint has good performance and can be used in a vibration environment.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A fitting for friction-type connection of corrugated steel sheets, comprising: a first curved plate, a second curved plate, a first flat plate, a second flat plate, a first end plate, and a second end plate; one side of the first curved plate is fixedly connected with one side of the first flat plate, and the other side of the first curved plate is fixedly connected with one side of the second flat plate; one side of the second curved plate is fixedly connected with the other side of the first flat plate, and the other side of the second curved plate is fixedly connected with the other side of the second flat plate; the first end panel is fixedly connected with one end of the first curved plate, one end of the second curved plate, one end of the first flat panel and one end of the second flat panel respectively; the second end plate is respectively and fixedly connected with the other end of the first curved plate, the other end of the second curved plate, the other end of the first flat plate and the other end of the second flat plate; the first curved plate, the second curved plate, the first flat plate, the second flat plate, the first end plate and the second end plate form a solid cold pressing block with radian; a plurality of bolt holes are formed in the middle of the cold pressing block along the longitudinal direction; the surface radian of the first curved plate is equal to the outer corrugation radian of the corrugated steel plate, and the surface radian of the second curved plate is equal to the inner corrugation surface radian of the corrugated steel plate; the surface radian of the first curved plate is greater than that of the second curved plate.

2. A fitting for effecting a friction-type connection of corrugated steel plates as claimed in claim 1 wherein said first curved plate has a longitudinal curvature which is the same as the longitudinal curvature of the corrugated steel plates.

3. A fitting for effecting a friction-type connection of corrugated steel plates as claimed in claim 1 wherein said second curved plate has a longitudinal curvature which is the same as the longitudinal curvature of the corrugated steel plates.

4. A fitting for effecting a friction-type connection of corrugated steel plates as claimed in claim 1 wherein the pitch of the bolt holes is the same as the pitch of the bolt holes of the corrugated steel plates; the aperture of the bolt hole is the same as that of the bolt of the corrugated steel plate.

5. A fitting for effecting friction-type joining of corrugated steel sheets as claimed in claim 1 wherein the surfaces of said first curved plate, second curved plate, first flat plate, second flat plate, first end plate and second end plate are each grit blasted roughened surfaces.