Hollowed-out stiffening web structure

Abstract

The utility model provides a hollow-out type stiffening web structure. The hollow-out type stiffening web structure comprises a middle web, a top plate, a bottom plate, a plurality of first stiffening ribs and a plurality of second stiffening ribs, the top end of the middle web is fixedly connected with the top plate, and the bottom end of the middle web is fixedly connected with the bottom plate; a plurality of holes are formed in preset positions of the middle web; the first stiffening ribs are arranged on the two side faces of the top and the bottom of the middle web and arranged in the extending direction of the bridge. The second stiffening ribs are arranged on the two side faces of the middle web between the adjacent holes and located on the edges of the holes. According to the utility model, the steel consumption can be greatly reduced, and the construction cost is saved. Furthermore, the steel consumption is reduced, and the weight of the web structure is reduced, so that the construction is more convenient, and the construction difficulty and the construction cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bridge engineering, and in particular to a hollow stiffening web structure. Background Art

[0002] With the continuous construction of high-speed railways and intercity railways, more and more bridges are often affected by factors such as navigation and protection areas when crossing rivers, which requires the construction of larger span bridges.

[0003] When the span of the bridge is large, in order to reduce the deadweight of the structure and reduce the length of the side span, a steel-concrete composite main beam is usually used in the prior art. However, in order to ensure the overall stability of the structure, the steel-concrete composite main beam is usually a single-box three-chamber steel box main beam, in which the middle web located between the chambers not only contributes less to the force, but also needs to increase the web reinforcement structure to ensure the local stability of the web itself, which makes the structure of the middle web more complicated. Since the middle web usually uses a solid steel plate and the web reinforcement structure is also set according to the local stability, the overall steel consumption of the middle web structure is large and the project cost is high. In addition, when the span of the bridge exceeds 200m, the design plan usually includes a cable-stayed bridge, and the cross-section of the steel-concrete composite main beam of the cable-stayed bridge is large. During the construction process, due to its long segment and heavy weight, the construction crane needs to have a long boom and a large bearing capacity, which increases the difficulty of construction.

[0004] In summary, since the middle web on the steel box main beam in the prior art has the shortcomings as described above, how to propose a better hollow stiffening web structure, which can greatly reduce the amount of steel used and save engineering costs, is a problem that needs to be urgently solved in this field. Utility Model Content

[0005] In view of this, the utility model provides a hollow stiffening web structure, which can greatly reduce the amount of steel used and save engineering costs.

[0006] The technical solution of the utility model is specifically achieved as follows:

[0007] A hollow stiffening web structure, comprising: a middle web, a top plate, a bottom plate, a plurality of first stiffening ribs and a plurality of second stiffening ribs;

[0008] The top end of the middle web is fixedly connected to the top plate, and the bottom end of the middle web is fixedly connected to the bottom plate; a plurality of holes are arranged at preset positions of the middle web;

[0009] The first stiffening ribs are arranged on both sides of the top and bottom of the middle web and along the direction in which the bridge extends; the second stiffening ribs are arranged on both sides of the middle web between adjacent holes and at the edges of the holes.

[0010] Preferably, a plurality of vertical partitions are spaced apart at preset positions on both side surfaces of the middle web, and three triangular holes are arranged on the middle web between every two adjacent partitions.

[0011] Preferably, a plurality of groups of vertical local stiffening ribs are provided on both side surfaces of the middle web plate at positions between the first stiffening rib and the top plate and between the first stiffening rib and the bottom plate.

[0012] Preferably, each group of local stiffening ribs includes at least one local stiffening rib, and each local stiffening rib is spaced apart by a preset distance.

[0013] Preferably, each group of local stiffening ribs is arranged at a position corresponding to the end of the second stiffening rib.

[0014] As can be seen from the above, in the hollow stiffening web structure of the utility model, a plurality of holes are provided on the middle web to form a hollow middle web, thereby reducing the steel consumption of the middle web itself; by providing partial stiffening ribs such as the first stiffening rib and the second stiffening rib on both sides of the middle web, the strength and stability of the middle web itself can be ensured, and a large number of long and more stiffening ribs can be avoided, thereby further reducing the steel consumption of the stiffening ribs, and thus reducing the engineering cost of the overall web structure. Furthermore, due to the reduction in the amount of steel used, the weight of the web structure is reduced, which makes it easier to construct, and reduces the construction difficulty and construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the hollow stiffening web structure in the embodiment of the utility model.

[0016] Figure 2 It is a cross-sectional view of the web structure in the embodiment of the utility model when no partition is provided.

[0017] Figure 3 It is a schematic diagram of the installation of the web structure in the embodiment of the utility model on the steel box main beam. DETAILED DESCRIPTION

[0018] In order to make the technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1 and Figure 2 As shown, the utility model provides a hollow stiffening web structure, comprising: a middle web 1, a top plate 6, a bottom plate 7, a plurality of first stiffening ribs 2 and a plurality of second stiffening ribs 4;

[0020] The top end of the middle web 1 is fixedly connected to the top plate 6, and the bottom end of the middle web 1 is fixedly connected to the bottom plate 7; a plurality of holes 11 are provided at preset positions of the middle web 1;

[0021] The first stiffening ribs 2 are arranged on both sides of the top and bottom of the middle web 1 and are arranged along the direction in which the bridge extends; the second stiffening ribs 4 are arranged on both sides of the middle web between adjacent holes 11 and are located at the edges of the holes.

[0022] In the technical solution of the present utility model, reference is made to Figure 3 The hollow stiffening web structure can be arranged between the chambers of the steel box main beam 100 of the one-way three-chamber structure. The top plate 6 at the top end of the middle web 1 is connected to the top of the steel box main beam 100, and the bottom plate 7 at the bottom end of the middle web 1 can also serve as the bottom plate of the steel box main beam 100.

[0023] By setting a plurality of holes on the middle web 1 to form a hollow middle web, the steel consumption of the middle web itself can be reduced; by setting the first stiffening ribs 2 on both sides of the top and bottom of the middle web, and setting the second stiffening ribs 4 on the edges of the holes, the strength and stability of the middle web itself can be ensured, and a large number of long and more stiffening ribs can be avoided, thereby further reducing the steel consumption of the stiffening ribs, and thus reducing the engineering cost of the overall web structure. In addition, due to the reduction in steel consumption, the weight of the web structure is reduced, which makes it easier to construct, thereby reducing the construction difficulty and construction cost.

[0024] In the technical solution of the present utility model, a variety of implementation methods can be used to implement the above hollow stiffening web structure. The following will take one of the implementation methods as an example to introduce the technical solution of the present utility model in detail.

[0025] For example, preferably, in a specific embodiment of the present invention, Figure 1 As shown, a plurality of vertical partitions 5 may be arranged at intervals at preset positions on both sides of the middle web 1 , and three triangular holes 11 may be arranged on the middle web 1 between every two adjacent partitions 5 .

[0026] In the technical solution of the utility model, a plurality of vertical partitions 5 are arranged on the middle web, so that the local stability of the middle web can be improved. By arranging the holes into a triangle, the second stiffening ribs 4 can be arranged vertically on the side of the middle web along the edge of the triangular hole, and the first stiffening ribs 2 arranged along the bridge direction, the vertically arranged partitions 5 and the vertically arranged second stiffening ribs work together to stabilize and strengthen the middle web.

[0027] For another example, preferably, in a specific embodiment of the present utility model, Figure 1 and Figure 2 As shown, multiple groups of vertical local stiffening ribs can be arranged on both side surfaces of the middle web 1, between the first stiffening rib 2 and the top plate 6 and between the first stiffening rib 2 and the bottom plate 7, so as to improve the local stability of the top and bottom of the middle web and ensure its stability.

[0028] Preferably, as an example, each group of local stiffening ribs may include at least one local stiffening rib 3, and each local stiffening rib 3 is spaced apart by a preset distance.

[0029] For example, preferably, as an example, the interval between two adjacent local stiffening ribs 3 in each group can be 2-3.5 meters.

[0030] In addition, as an example, in a preferred specific embodiment of the present invention, Figure 1 As shown, each group of local stiffening ribs may be arranged at a position corresponding to the end of the second stiffening rib 4 .

[0031] In summary, in the technical solution of the utility model, a plurality of holes are provided on the middle web 1 to form a hollow middle web, thereby reducing the steel consumption of the middle web itself; by providing partial stiffening ribs such as the first stiffening rib 2 and the second stiffening rib 4 on both sides of the middle web, the strength and stability of the middle web itself can be ensured, and a large number of long and more stiffening ribs can be avoided, thereby further reducing the steel consumption of the stiffening ribs, and thus reducing the engineering cost of the overall structure of the web. Furthermore, due to the reduction in the amount of steel used, the weight of the web structure is reduced, which makes it easier to construct, and reduces the construction difficulty and construction cost.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hollow stiffening web structure, characterized in that: include: A middle web plate, a top plate, a bottom plate, a plurality of first stiffening ribs and a plurality of second stiffening ribs; The top end of the middle web is fixedly connected to the top plate, and the bottom end of the middle web is fixedly connected to the bottom plate; a plurality of holes are arranged at preset positions of the middle web; The first stiffening ribs are arranged on both sides of the top and bottom of the middle web and along the direction in which the bridge extends; the second stiffening ribs are arranged on both sides of the middle web between adjacent holes and at the edges of the holes.

2. The hollow stiffening web structure according to claim 1, characterized in that: A plurality of vertical partitions are arranged at intervals at preset positions on both sides of the middle web, and three triangular holes are arranged on the middle web between every two adjacent partitions.

3. The hollow stiffening web structure according to claim 1, characterized in that: A plurality of groups of vertical local stiffening ribs are arranged on both side surfaces of the middle web plate at positions between the first stiffening rib and the top plate and between the first stiffening rib and the bottom plate.

4. The hollow stiffening web structure according to claim 3 is characterized in that: Each group of local stiffening ribs includes at least one local stiffening rib, and each local stiffening rib is spaced a preset distance apart.

5. The hollow stiffening web structure according to claim 3, characterized in that: Each group of the partial stiffening ribs is arranged at a position corresponding to an end of the second stiffening rib.

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