Joint structure of floating bridge
阅读说明:本技术 一种浮桥的接头结构 (Joint structure of floating bridge ) 是由 孙仲钰 范文久 卢鹏宇 陈苏琪 周清华 高小兵 陈万 熊天鹤 于 2019-12-04 设计创作,主要内容包括:本申请具体的涉及一种浮桥的接头结构,所述接头包含耳板,设于耳板边缘为半圆弧,耳板内还设有孔,其中所述半圆弧的圆心与孔的圆心间设有间隙,从而提高了接头的抗剪强度;耳板的两侧分别设有上过渡板与下过渡板;上过渡板的外侧安装有上翼板,下过渡板的外侧安装有下翼板,使接头所受拉力平缓传递,避免应力集中,降低耳板所受拉应力,从而提高接头的抗拉强度;隔离耳板与浮桥主龙骨结构,从而避免了焊接工艺复杂难以实施的问题以及截面突变导致的应力集中,从而提高了接头的抗疲劳强度。(The application particularly relates to a joint structure of a floating bridge, which comprises ear plates, wherein the edges of the ear plates are semicircular arcs, holes are also formed in the ear plates, and gaps are formed between the circle centers of the semicircular arcs and the circle centers of the holes, so that the shearing strength of the joint is improved; the two sides of the ear plate are respectively provided with an upper transition plate and a lower transition plate; the upper wing plate is arranged on the outer side of the upper transition plate, and the lower wing plate is arranged on the outer side of the lower transition plate, so that the tensile force borne by the joint is smoothly transmitted, stress concentration is avoided, the tensile stress borne by the lug plate is reduced, and the tensile strength of the joint is improved; the lug plates and the main keel structure of the floating bridge are isolated, so that the problems that the welding process is complex and difficult to implement and stress concentration caused by sudden change of the cross section are avoided, and the fatigue resistance of the joint is improved.)
1. The utility model provides a joint structure of pontoon bridge, connect (100) including otic placode (1), locate semicircle (1a) at otic placode (1) edge, still be equipped with hole (1b) in otic placode (1), its characterized in that:
a gap (a) is arranged between the circle center of the semicircular arc (1a) and the circle center of the hole (1 b);
the two sides of the ear plate (1) are respectively provided with an upper transition plate (2) and a lower transition plate (3);
an upper wing plate (4) is arranged on the outer side of the upper transition plate (2), and a lower wing plate (5) is arranged on the outer side of the lower transition plate (3).
2. The pontoon according to claim 1, wherein:
the ear plate (1) is a plate body with a strip-shaped structure.
3. The pontoon according to claim 1, wherein:
the ear plates (1) are two plate bodies with strip-shaped structures, and the ear plates (1) are provided with two first ear plates (11) and two second ear plates (12);
a front connecting plate (51) is arranged between the first ear plate (11) and the second ear plate (12).
4. The pontoon according to claim 1, wherein:
the upper side of the ear plate (1) is fixed with the upper transition plate (2), and the lower side of the ear plate is fixed with the lower transition plate (3).
5. The pontoon according to claim 1, wherein:
the upper transition plate (2) is fixed with the upper wing plate (4); the lower transition plate (3) is fixed with the lower wing plate (5).
6. The pontoon according to claim 1, wherein:
a transition plate (6) is also connected between the upper wing plate (4) and the lower wing plate (5), and the transition plate (6) is crescent.
7. The pontoon according to claim 1, wherein:
a welding body (7) is arranged between the ear plate (1) and the upper transition plate (2) and between the ear plate and the lower transition plate (3);
a welding body (7) is arranged between the upper transition plate (2) and the upper wing plate (4);
a welding body (7) is also arranged between the lower transition plate (3) and the lower wing plate (5).
8. The pontoon according to claim 1, wherein:
a web plate (8) is arranged between the upper transition plate (2) and the lower transition plate (3).
9. The pontoon according to claim 1, wherein:
the upper part of the upper transition plate (2) is also provided with an arc-shaped toggle plate (9);
the upper transition plate (2) is fixedly connected with an arc-shaped toggle plate (9); or
The upper wing plate (4) is fixedly connected with the arc-shaped toggle plate (9); or
The arc-shaped toggle plate (9) is fixed with the upper transition plate (2) and the upper wing plate (4) together.
Technical Field
The application relates to the field of floating bridges, in particular to a joint structure of a floating bridge.
Background
The floating bridge is a bridge which uses a ship or a buoyancy tank to replace a pier and floats on the water surface.
The floating bridge is a decomposable device assembled on site, and a connecting device is arranged between the bridge sections and the boat bodies of the floating bridge. The type of connection means, which is a critical component of the pontoon, directly affects the speed of the connection operation and the equipment use performance.
As shown in fig. 1, the
Disclosure of Invention
The purpose of the application is: the shear stress section is increased, and the shear strength of the ear plate is improved; the web structure of the main keel of the floating bridge and the lug plates are isolated, so that stress concentration is avoided, and the tensile strength and the fatigue resistance of the lug plates are improved.
The joint structure of the floating bridge comprises an ear plate and a semicircular arc arranged at the edge of the ear plate, wherein a hole is also formed in the ear plate, and a gap is formed between the circle center of the semicircular arc and the circle center of the hole; the two sides of the ear plate are respectively provided with an upper transition plate and a lower transition plate; the outer side of the upper transition plate is provided with an upper wing plate, and the outer side of the lower transition plate is provided with a lower wing plate.
Preferably, the ear plate is a plate body with a long strip-shaped structure.
Preferably, the ear plates are two plate bodies with strip-shaped structures, and the ear plates are provided with two first ear plates and two second ear plates;
a front connecting plate is arranged between the first ear plate and the second ear plate.
Preferably, the upper side of the ear plate is fixed with the upper transition plate, and the lower side of the ear plate is fixed with the lower transition plate.
Preferably, the upper transition plate is fixed with the upper wing plate; the lower transition plate is fixed with the lower wing plate.
Preferably, a transition plate is further connected between the upper wing plate and the lower wing plate, and the transition plate is crescent.
Preferably, a welding body is arranged between the ear plate and the upper transition plate and between the ear plate and the lower transition plate; a welding body is arranged between the upper transition plate and the upper wing plate;
a welding body is also arranged between the lower transition plate and the lower wing plate.
Preferably, a web plate is further arranged between the upper transition plate and the lower transition plate.
Preferably, the upper part of the upper transition plate is also provided with an arc-shaped toggle plate;
the upper transition plate is fixedly connected with the arc-shaped toggle plate; or the upper wing plate is fixedly connected with the arc-shaped toggle plate; or
The arc-shaped toggle plate is fixed with the upper transition plate and the upper wing plate together.
Compared with the prior art, the application has the following obvious advantages and effects:
1. the pulling force applied to the joint is transmitted smoothly, stress concentration is avoided, the pulling force applied to the lug plate is reduced, the distance between the semi-circular arc and the hole is increased, the shear stress section is increased, and the shear strength of the lug plate is improved.
2. The web plates of the lug plates and the main keel of the floating bridge are separated by connecting the separation lug plates, the transition plates and the web plates of the main keel, so that the problems that a welding process is complex and difficult to implement and stress concentration caused by sudden change of the cross section are avoided, the tensile stress of a joint is reduced, and the tensile strength and the fatigue resistance of the joint are improved.
3. The lower transition plate is extended to the outside of the floating bridge, so that the connection thickness of the lug plate and the lower transition plate is increased, and the tensile strength of the joint is improved.
4. The arc-shaped toggle plates are added to prolong the fatigue life of the structure, effectively transfer and share load, reduce the local stress concentration of the floating bridge and improve the joint connection strength.
5. The otic placode material selects high strength alloy steel 30CrMnTi to improve the joint connection strength.
Drawings
FIG. 1 is a schematic view of a joint prior to modification of the present application.
FIG. 2 is a schematic diagram according to one embodiment of the present application.
Fig. 3 is a schematic view of a joint according to the present application in a binaural panel structure.
Fig. 4 is a cross-sectional view taken at a-a of fig. 3 of the present application.
Fig. 5 is a cross-sectional view taken at the location B-B of fig. 3 of the present application.
Fig. 6 is a schematic view of a joint according to the present application in a single lug plate configuration.
Fig. 7 is a cross-sectional view taken at a-a of fig. 6 of the present application.
Fig. 8 is a cross-sectional view taken at the location B-B of fig. 6 of the present application.
Fig. 9 is a schematic view of the combination of the joints in the present application.
Parts list
Detailed Description
Specific embodiments thereof are described below in conjunction with the following description and the accompanying drawings to teach those skilled in the art how to make and use the best mode of the present application. For the purpose of teaching application principles, the following conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the application. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the present application. Thus, the present application is not limited to the specific embodiments described below, but only by the claims and their equivalents.
In fig. 2 to 9, an example of a joint structure of a pontoon according to the invention is shown. The forces can be divided into tensile and shear stresses, and for the shear stress to which the monaural
as shown in fig. 2, taking the
according to the formula of mean shear stress
(V represents the shear force applied to the cross section, and A represents the cross-sectional area of the shear-acting surface). As can be seen, when the shear force applied to the cross section is not changed, the cross-sectional area of the shear force applied is increased, and the shear stress applied thereto is decreased, so that the shear strength of theTherefore, the distance a between the center of the semicircular arc 1a and the center of the
The structure of the
As shown in fig. 2, taking the
In the embodiment shown in fig. 2, the joint ear plate can be configured as a strip-shaped plate body to form a joint structure of a single ear plate (see fig. 6, 7, and 8), and the joint ear plate can also be configured as a double-ear plate structure (see fig. 3, 4, and 5) formed by two symmetrical strip-shaped plate bodies, and the joint of the single ear plate is cooperatively connected with the joint of the single ear plate through a pin, see fig. 9.
Referring to fig. 3 and 4, in the present embodiment, the front connecting
Preceding connecting
As shown in fig. 8, in the present embodiment, the cross sections of the
Further, a welding body 7 is fixedly welded between the
As shown in fig. 5 and 8, in the present embodiment, preferably, the welding body 7 is long-strip-shaped, the cross section of the welding body 7 is a sector shape which is concave inwards, and the welding body 7 is welded and fixed along the combined contact position.
It should be noted that the welding body 7 ensures that the internal structures are sufficiently fixed, and ensures that the internal stress is stably transmitted along each structure, thereby avoiding stress concentration of the joint. Wherein the content of the first and second substances,
a welding body 7 is arranged between the
A welding body 7 is arranged between the
As shown in fig. 5, in the present embodiment, the
As shown in fig. 5, in the present embodiment, the
Furthermore, through the connection structure of the
As shown in fig. 7, in this embodiment, the
One-time transmission stress: the
Secondary transmission stress: the
Wherein, the top surface of the
As shown in fig. 3 and 6, in the present embodiment, a
As shown in fig. 4 and 7, in this embodiment, the
As shown in fig. 7, in this embodiment, the
As shown in fig. 4, in the present embodiment, the
As shown in fig. 2, 3 and 6, in the present embodiment, the
The arc-shaped
It should be noted that the arc-shaped
the upper part of the
The upper part of the
The bottom of the arc-shaped
Since any modifications, equivalents, improvements, etc. made within the spirit and principles of the application may readily occur to those skilled in the art, it is intended to be included within the scope of the claims of this application.