Straddle type combined structure track beam

Abstract

The utility model provides a straddle type combined structure track beam, and relates to the field of track traffic. According to the structure, two main beams are symmetrically arranged on the two sides of a line; the cross beam is arranged between the two main beams, the two ends of the cross beam are fixedly connected with the bottoms of the two main beams respectively, and the bottom end of the cross beam and the bottom ends of the two main beams are connected with the top ends of the line piles; the supporting structure comprises a bearing part and a plurality of reinforcing ribs, the bearing part is arranged in the middle of the single main beam, connecting steel is arranged at the top end of the bearing part, the top end of the connecting steel extends out of the single main beam towards the end away from the bearing part, and one ends of the two reinforcing ribs are arranged at the edges of the two ends of the single main beam respectively. The other ends of the two reinforcing ribs extend towards the bearing part to form supporting pieces, and the two supporting pieces are oppositely arranged along the bearing part. According to the structure, the problem that the bearing capacity and the bearing limit of the reinforced concrete structure track beam are insufficient under the high-frequency and high-strength train operation condition is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rail transit, and concretely relates to a straddle type combined structure rail beam. BACKGROUND

[0002] In the existing field of rail transit, the main structure of the rail beam generally adopts a reinforced concrete combination form. Due to the inhomogeneity of the concrete material and the bonding slip phenomenon existing between the steel bars and the concrete, the structure is prone to uneven stress distribution when bearing the train load. This uneven stress not only weakens the overall durability of the structure, but also accelerates the aging process and damage degree of the material, thereby adversely affecting the carrying capacity and load limit of the rail beam. Under the conditions of high frequency and high intensity of train operation, the carrying capacity and load limit of the reinforced concrete structure rail beam are insufficient.

[0003] Therefore, there is an urgent need for a straddle type combined structure rail beam to solve the problem of insufficient carrying capacity and load limit of the reinforced concrete structure rail beam under the conditions of high frequency and high intensity of train operation. SUMMARY

[0004] The utility model aims at providing a straddle type combined structure rail beam to improve the above problems. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A straddle type combined structure rail beam, comprising: a main beam, a cross beam, a load-bearing part, a reinforcing rib, a connecting steel and a support. Two main beams are symmetrically arranged on both sides of the line; the cross beam is arranged between the two main beams, the two ends of the cross beam are fixedly connected with the bottom of the two main beams respectively, and the bottom end of the cross beam and the bottom end of the two main beams are connected with the top end of the line pile; the support structure comprises a load-bearing part and a plurality of reinforcing ribs, the load-bearing part is arranged in the middle of a single main beam, the top end of the load-bearing part is provided with a connecting steel, the top end of the connecting steel extends to the outside of the single main beam away from the load-bearing part, one end of each of the two reinforcing ribs is arranged at the edge of the two ends of the single main beam, and the other end of each of the two reinforcing ribs extends to the load-bearing part to form a support, and the two supports are oppositely arranged along the load-bearing part.

[0006] Preferably, the connecting steel comprises a straight rod and a bent hook, one end of the straight rod is connected with the load-bearing part, and the other end of the straight rod is connected with the bent hook.

[0007] Preferably, the cross section of the reinforcing rib is in the shape of "L" or "T".

[0008] Preferably, the load-bearing part is provided with a first straight rod arranged in the middle of the single main beam, the first straight rod is arranged horizontally along the length direction of the cross beam, the bottom end of the first straight rod is provided with a plurality of second straight rods, the other end of the plurality of second straight rods is connected with the bottom of the single main beam, the middle part of the plurality of second straight rods is provided with a third straight rod (33) arranged in parallel with the first straight rod.

[0009] Preferably, the two main beams comprise a first beam body and a second beam body, the bottom of the first beam body and the bottom of the second beam body are fixedly connected with the two ends of the cross beam through a diagonal bracing structure.

[0010] Preferably, the first beam body comprises a first channel steel and a second channel steel, the cross sections of the first channel steel and the second channel steel are both in the shape of a concave letter, the first channel steel and the second channel steel are both arranged vertically along the height direction of the cross beam, and the slot of the first channel steel is arranged in opposition to the slot of the second channel steel.

[0011] Preferably, the first beam body and the second beam body are both provided with a plurality of reinforcing ribs, the reinforcing ribs are arranged in the middle of the first beam body and the second beam body, the reinforcing ribs are arranged in the middle of the first channel steel and the second channel steel, and the reinforcing ribs are arranged in the middle of the cross beam.

[0012] Preferably, the middle part of the second beam body is provided with a manhole, and the manhole is arranged between the plurality of second straight rods.

[0013] Preferably, the height values of the first beam body and the second beam body are smaller than the height value of the cross beam.

[0014] Preferably, the reinforcing rib comprises a web plate, one end of the web plate is connected with the end edge of the single main beam, and the other end of the web plate is connected with the support.

[0015] The beneficial effects of the structure are as follows:

[0016] The load-bearing part and the reinforcing rib are introduced, and the main beam structure is significantly optimized. Specifically, the load-bearing part is arranged on the main beam, and the load-bearing part enhances the stability of the main beam when bearing external loads. The top of the load-bearing part is provided with a connecting steel, the connecting steel is tightly connected with the load-bearing part, and the stability and integrity between the structural components are ensured. In order to further enhance the rigidity and durability of the structure, the reinforcing rib is arranged at the two end edges of the main beam, so as to maximize the carrying capacity and anti-deformation capacity of the main beam, thereby maintaining the stability and safety of the structure under complex working conditions. In summary, through the joint arrangement of the load-bearing part, the reinforcing rib and the connecting steel, the problem of insufficient carrying capacity and load limit of the reinforced concrete track beam under the conditions of high frequency and high intensity train operation is solved.

[0017] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and advantages of the application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the structure of the first beam body of the present application;

[0021] Figure 3 It is a schematic diagram of the structure of the second beam body of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of the reinforcing rib with "L" shaped cross section of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of the reinforcing rib with "T" shaped cross section of the present application;

[0024] Markings in the figure:

[0025] 1, main beam; 2, cross beam; 3, load bearing part; 4, reinforcing rib; 5, connecting steel; 6, side plate; 11, first beam body; 12, second beam body; 13, inclined strut structure; 31, first straight rod; 32, second straight rod; 33, third straight rod; 41, support; 42, web; 51, straight rod; 52, hook; 111, first channel steel; 112, second channel steel; 113, side plate; 121, manhole. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] like Figure 1 As shown, a straddle-type combined track beam includes: two main beams 1 symmetrically arranged on both sides of the track; a crossbeam 2, which is arranged between the two main beams 1, with both ends of the crossbeam 2 fixedly connected to the bottom of the two main beams 1 respectively, and the bottom end of the crossbeam 2 and the bottom end of the two main beams 1 connected to the top of the track piles; and a support structure, which includes a load-bearing part 3 and multiple reinforcing ribs 4. The load-bearing part 3 is located in the middle of a single main beam 1, and a connecting steel 5 is provided at the top of the load-bearing part 3. The top of the connecting steel 5 extends away from the load-bearing part 3 to the outside of the single main beam 1. One end of each of the two reinforcing ribs 4 is located at the edge of both ends of the single main beam 1, and the other end of each of the two reinforcing ribs 4 extends toward the load-bearing part 3 to form a support member 41. The two support members 41 are arranged opposite each other along the load-bearing part 3.

[0029] The specific effects of this structure are as follows: the load-bearing part 3 enhances the stability of the main beam 1 under external loads, preventing deformation or damage under lateral forces. Two reinforcing ribs 4 are considered a group, and multiple groups of reinforcing ribs 4 are provided within a single main beam 1. The reinforcing ribs 4 are used to improve the load-bearing capacity and stability of the main beam 1, preventing buckling deformation under external forces. The connecting steel 5 is tightly connected to the load-bearing part 3. After the top of the main beam 1 is filled with concrete, the connecting steel 5 ensures the stability and integrity between the main beam 1 and the concrete. Preferably, the cross-section of the support member 41 is elliptical.

[0030] As shown in Figure 2 The connecting steel 5 includes a straight rod 51 and a hook 52, one end of the straight rod 51 is connected with the load-bearing part 3, and the other end of the straight rod 51 is connected with the hook 52. In the structure, when the top of the two main beams 1 is filled with concrete, one end of the straight rod 51 is connected with the load-bearing part 3, and the other end of the straight rod 51 is arranged in the concrete, and the hook 52 is used to increase the contact area.

[0031] As shown in Figure 4 And Figure 5 The cross section of the reinforcing rib 4 is in the shape of "L" or "T".

[0032] In the utility model, the load-bearing part 3 is provided with a first straight rod 31, the first straight rod 31 is arranged at the middle of the single main beam 1, the first straight rod 31 is horizontally arranged along the length direction of the cross beam 2, the bottom end of the first straight rod 31 is provided with a plurality of second straight rods 32, the other end of the plurality of second straight rods 32 is connected with the bottom of the single main beam 1, the middle part of the plurality of second straight rods 32 is provided with a third straight rod 33, and the third straight rod 33 is arranged in parallel with the first straight rod 31. The first straight rod 31, the second straight rod 32 and the third straight rod 33 form a rigid frame in the main beam 1, the load-carrying capacity of the whole structure is enhanced, and the external force acting on the main beam 1 is effectively dispersed, so that the structural damage caused by local stress concentration is avoided.

[0033] To clearly show the specific arrangement of the main beam 1, the two main beams 1 include a first beam body 11 and a second beam body 12, and the bottom of the first beam body 11 and the bottom of the second beam body 12 are fixedly connected with the two ends of the cross beam 2 through a diagonal bracing structure. The cross beam 2 and the diagonal bracing structure are used to improve the lateral stiffness of the track.

[0034] In the utility model, the first beam body 11 includes a first channel steel 111 and a second channel steel 112, the cross section of the first channel steel 111 and the second channel steel 112 is in the shape of "N", the first channel steel 111 and the second channel steel 112 are vertically arranged along the height direction of the cross beam 2, and the slot of the first channel steel 111 is oppositely arranged with the slot of the second channel steel 112. The first channel steel 111 and the second channel steel 112 increase the overall strength and pressure resistance of the structure. The spliced first channel steel 111 and second channel steel 112 can bear greater external force and pressure. In the structure, the first channel steel 111 and the second channel steel 112 are both rolled, and the prior art is all welded with steel plates, and rolling production saves welding cost and has higher material utilization.

[0035] Furthermore, it also includes multiple side plates 6, one end of which is connected to the top wall of the first channel steel 111 and the second channel steel 112 respectively, and the other end of which extends outward to the top of the single main beam 1. The multiple side plates 6 and the first beam 11 are connected to form a casting cavity, which is used to fill concrete.

[0036] like Figure 3 As shown, a passageway 121 is provided in the middle of the second beam 12, and the passageway 121 is located between multiple second straight bars 32. The passageway 121 facilitates maintenance and repair by personnel.

[0037] Preferably, the height values ​​of the first beam 11 and the second beam 12 are less than the height value of the crossbeam 2.

[0038] To clarify the specific structure of the reinforcing rib 4, the reinforcing rib 4 includes a web 42, one end of which is connected to the end edge of a single main beam 1, and the other end of which is connected to the support member 41.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A straddle-type composite structure track beam, characterized in that, The utility model provides a kind of railway girder, including: Two main beams (1), two the main beam (1) is symmetrically arranged in line two sides; Crossbeam (2), the crossbeam (2) is arranged between two the main beam (1), and the bottom of two the main beam (1) is respectively fixedly connected with the two ends of the crossbeam (2), and the bottom of the crossbeam (2) and two the main beam (1) are connected with the top of line pile; Support structure, the support structure includes load-bearing part (3) and multiple reinforcing ribs (4), the load-bearing part (3) is arranged in single the main beam (1) middle part, the top of the load-bearing part (3) is provided with connecting steel (5), the top of the connecting steel (5) extends to single the main beam (1) outside from the end away from the load-bearing part (3), and the two ends of two the reinforcing rib (4) are respectively arranged at the two end edges of single the main beam (1), and the other end of two the reinforcing rib (4) is extended to the load-bearing part (3) and forms support piece (41), and two the support piece (41) is oppositely arranged along the load-bearing part (3).

2. The combined structure of straddle-type rail beam according to claim 1, wherein, The connecting steel (5) includes straight rod (51) and hook (52), one end of the straight rod (51) is connected with the load-bearing part (3), and the other end of the straight rod (51) is connected with the hook (52).

3. The combined structure rail beam of claim 1, wherein The cross section of the reinforcing rib (4) is "L" type or "T" type.

4. The combined structure rail beam of claim 1, wherein The load-bearing part (3) is provided with first straight rod (31), the first straight rod (31) is arranged in single the main beam (1) middle part, and the first straight rod (31) is horizontally arranged along the length direction of crossbeam (2), and the bottom of the first straight rod (31) is provided with multiple second straight rods (32), and the other end of multiple the second straight rod (32) is connected with the bottom of single the main beam (1), and the middle part of multiple the second straight rod (32) is provided with third straight rod (33), and the third straight rod (33) is arranged in parallel with the first straight rod (31).

5. The combined structure rail beam of claim 4, wherein, Two the main beam (1) includes first beam body (11) and second beam body (12), and the bottom of the first beam body (11) and the bottom of the second beam body (12) are fixedly connected with the two ends of the crossbeam (2) by inclined support structure.

6. The combined structure rail beam of claim 5, wherein, The first beam body (11) includes first channel steel (111) and second channel steel (112), and the cross section of the first channel steel (111) and the second channel steel (112) is all concave type, and the first channel steel (111) and the second channel steel (112) are vertically arranged along the height direction of crossbeam (2), and the slot of the first channel steel (111) is oppositely arranged with the slot of the second channel steel (112).

7. The combined structure rail beam of claim 6, wherein, Further include multiple side plates (6), one end of multiple the side plate (6) is connected with the top wall surface of the first channel steel (111) and the second channel steel (112) respectively, and the other end of multiple the side plate (6) extends to the top end outside of single the main beam (1), and multiple the side plate (6) and the first beam body (11) are connected to form pouring cavity, and the pouring cavity is used to fill concrete.

8. The combined structure rail beam of claim 5, wherein, The middle part of the second beam body (12) is provided with a manhole (121), and the manhole (121) is arranged between a plurality of second straight rods (32).

9. The combined structure rail beam of claim 5, wherein The height values of the first beam body (11) and the second beam body (12) are less than the height value of the cross beam (2).

10. The combined structure rail beam of claim 1, wherein, The reinforcing rib (4) comprises a web plate (42), one end of the web plate (42) is connected with the end edge of the single main beam (1), and the other end of the web plate (42) is connected with the support (41).

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