A cross aisle steel framing configuration and cross aisle support system

Abstract

The utility model relates to a tunnel construction technical field, especially a kind of horizontal passageway steel frame structure and horizontal passageway support system, horizontal passageway steel frame structure includes arc steel frame and the two vertical steel frames of parallel arrangement, vertical steel frame is vertically arranged, the upper end of two vertical steel frames is connected respectively with the both ends of arc steel frame, the center of arc steel frame is lower than the upper end of vertical steel frame;The lower end of vertical steel frame is connected with at least two locking foot anchor rods, locking foot anchor rod is used for anchoring in surrounding rock, and the free end of locking foot anchor rod connected with same vertical steel frame is separated.This utility model by the center of arc steel frame being set lower than the upper end of vertical steel frame, can make the force of arc steel frame to vertical steel frame have horizontal direction component to resist the pressure exerted by side surrounding rock;By setting locking foot anchor rod in the lower end of vertical steel frame, anchoring force can be applied to the lower end of vertical steel frame to resist side surrounding rock.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a cross passage steel frame structure and cross passage support system. Background Technology

[0002] A cross passage is a transverse connecting passage set up beside the main tunnel line. It is mainly used for emergency evacuation, equipment installation, maintenance, or traffic diversion. The cross-sectional dimensions of the cross passage are usually smaller than those of the main tunnel, which means that smaller supporting components can be used to improve construction efficiency. When constructing a cross passage, construction efficiency and safety are two important influencing factors. Most existing cross passage support structures only consider the downward pressure of the upper surrounding rock and rarely consider the lateral pressure of the side surrounding rock. When encountering some special terrain, the large lateral pressure may cause the vertical steel frame to tilt inward or become unstable, affecting the safety of the cross passage support. Utility Model Content

[0003] The purpose of this invention is to overcome the problem in the prior art that when encountering certain special terrains, large lateral pressure may cause the vertical steel frame to tilt inward or become unstable, affecting the safety of the cross passage support, and to provide a cross passage steel frame structure and cross passage support system.

[0004] In a first aspect, the present invention provides a horizontal channel steel frame structure, including an arc-shaped steel frame and two vertical steel frames arranged side by side, wherein the vertical steel frames are arranged vertically, and the two ends of the arc-shaped steel frame are respectively connected to the upper ends of the two vertical steel frames, and the center of the arc-shaped steel frame is lower than the upper end of the vertical steel frames;

[0005] The upper end of the vertical steel frame is provided with a first connecting plate, which is inclined, and the center of the arc-shaped steel frame is located on the extended surface of the first connecting plate.

[0006] The end of the arc-shaped steel frame is provided with a second connecting plate, which is in contact with the first connecting plate;

[0007] The lower end of the vertical steel frame is connected to at least two locking anchor rods, which are used to anchor to the surrounding rock and are separated from the free end of the locking anchor rod connected to the same vertical steel frame.

[0008] The transverse passage steel frame structure described in this utility model utilizes a support structure composed of an arc-shaped steel frame and two vertical steel frames to support the transverse passage. By setting the center of the arc-shaped steel frame lower than the upper end of the vertical steel frames, the force exerted by the arc-shaped steel frame on the vertical steel frames has a horizontal component. This horizontal component pushes the upper end of the vertical steel frames against the surrounding rock to resist the pressure exerted by the surrounding rock. By installing anchor bolts at the lower end of the vertical steel frames, an anchoring force can be applied to the lower end of the vertical steel frames to resist the surrounding rock. The free ends of several anchor bolts are separated, which can provide forces to the vertical steel frames in multiple directions, thus improving the stability of the vertical steel frames. The transverse passage steel frame structure provided by this utility model has the advantages of simple structure and convenient installation, and can improve the construction efficiency and safety of transverse passages.

[0009] Preferably, the two vertical steel frames are of equal length and their lower ends are at the same height, and the center of the arc-shaped steel frame is located at 1 / 3 to 2 / 3 of the height of the vertical steel frame.

[0010] Preferably, the first connecting plate and the second connecting plate are fixed with bolts.

[0011] Preferably, the upper end of the vertical steel frame is provided with a first positioning steel bar, one end of which is anchored and the other end is connected to the vertical steel frame; both ends of the arc-shaped steel frame are provided with second positioning steel bars, one end of which is anchored and the other end is connected to the arc-shaped steel frame.

[0012] Preferably, the arc-shaped steel frame is an I-beam, and the vertical steel frame is an I-beam.

[0013] Preferably, the vertical steel frame includes parallel inner flange plates and outer flange plates, with the inner flange plates of the two vertical steel frames facing each other; the lower end of the vertical steel frame is provided with a U-shaped steel bar, the U-shaped steel bar includes a middle section and two side sections, the middle section is close to the inner side of the inner flange plate, and the end of the side section away from the middle section is connected to the side of the outer flange plate; the side sections are inclined, and the locking anchor rod is welded to the side section.

[0014] Preferably, the two vertical steel frames are symmetrical about the central axis, and the center of the arc-shaped steel frame is located on the central axis.

[0015] In a second aspect, the present invention provides a transverse channel support system, comprising at least two transverse channel steel frame structures as described above, wherein the transverse channel steel frame structures are spaced apart along the longitudinal direction of the channel, and further comprising a plurality of longitudinal reinforcing bars abutting against the inner sides of the vertical steel frame and the arc-shaped steel frame, wherein the same longitudinal reinforcing bar connects at least two longitudinally spaced transverse channel steel frame structures.

[0016] Preferably, the longitudinal reinforcement includes a first longitudinal reinforcement and a second longitudinal reinforcement, with at least two first longitudinal reinforcements spaced apart along the length of the vertical steel frame and at least two second longitudinal reinforcements spaced apart along the length of the arc-shaped steel frame.

[0017] Preferably, a pad assembly is provided between the transverse steel frame structure and the surrounding rock. The pad assembly includes a groove-shaped component and a wedge-shaped component. The groove of the groove-shaped component faces the transverse steel frame structure or the surrounding rock, and the wedge-shaped component is inserted into the groove of the groove-shaped component and wedged tightly.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The transverse passage steel frame structure described in this utility model utilizes a support structure composed of an arc-shaped steel frame and two vertical steel frames to support the transverse passage. By setting the center of the arc-shaped steel frame lower than the upper end of the vertical steel frames, the force exerted by the arc-shaped steel frame on the vertical steel frames has a horizontal component. This horizontal component pushes the upper end of the vertical steel frames against the surrounding rock to resist the pressure exerted by the surrounding rock. By installing anchor bolts at the lower end of the vertical steel frames, an anchoring force can be applied to the lower end of the vertical steel frames to resist the surrounding rock. The free ends of several anchor bolts are separated, which can provide forces to the vertical steel frames in multiple directions, thus improving the stability of the vertical steel frames. The transverse passage steel frame structure provided by this utility model has the advantages of simple structure and convenient installation, and can improve the construction efficiency and safety of transverse passages. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the transverse channel steel frame structure described in the embodiments of this application;

[0021] Figure 2 for Figure 1 Schematic diagram of node A in the middle;

[0022] Figure 3 for Figure 1 Schematic diagram of node B in the middle;

[0023] Figure 4 This is a schematic diagram of the connection between the anchor bolt and the U-shaped steel bar as described in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of the connecting plate described in an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the grooved component described in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the wedge-shaped member described in the embodiments of this application;

[0027] Figure 8This is a top view of the structure of the second longitudinal reinforcement in an embodiment of this application.

[0028] Marked in the image:

[0029] 1-Vertical steel frame;

[0030] 11-First connecting plate; 12-First positioning reinforcement; 13-Inner flange plate; 14-Outer flange plate; 15-Bottom plate;

[0031] 2-Arc-shaped steel frame;

[0032] 21-Second connecting plate; 22-Second positioning reinforcement;

[0033] 3-Anchor bolt with locking foot;

[0034] 4-U-shaped steel bars;

[0035] 41 - Middle section; 42 - Edge section;

[0036] 5-Central Axis Surface;

[0037] 6 - First longitudinal reinforcement;

[0038] 7-Second longitudinal reinforcement;

[0039] 8-Slotted parts;

[0040] 9-Wedge-shaped part. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0042] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0044] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0045] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0046] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0047] Example

[0048] like Figures 1 to 3 As shown, in a first aspect, this application provides a transverse passage steel frame structure, including an arc-shaped steel frame 2 and two vertical steel frames 1 arranged side by side. The two vertical steel frames 1 can be respectively arranged on the left and right sides of the transverse passage. The vertical steel frames 1 are arranged vertically. One end of the arc-shaped steel frame 2 is connected to the upper end of one of the vertical steel frames 1, and the other end is connected to the upper end of the other vertical steel frame 1.

[0049] The cross passage steel frame structure is used to support the cross passage during the tunnel excavation process. The cross passage refers to the transverse connecting passage set up on the side of the main tunnel line. It is mainly used for emergency evacuation, equipment installation, maintenance or traffic diversion, and its cross-sectional dimensions are usually smaller than the dimensions of the main tunnel.

[0050] The arc-shaped steel frame 2 is preferably arc-shaped, which has the advantages of easy processing and good consistency. In some embodiments, the center of the arc-shaped steel frame 2 is lower than the upper end of the vertical steel frame 1, the central axis of the arc-shaped steel frame 2 is an arc, and the center of the arc-shaped steel frame 2 is the center of its central axis. Setting the center of the arc-shaped steel frame 2 lower than the upper end of the vertical steel frame 1 allows the force exerted by the arc-shaped steel frame 2 on the vertical steel frame 1 to have a horizontal component. This horizontal component can push the upper end of the vertical steel frame 1 towards the side rock to resist the pressure exerted by the side rock, thereby improving the support effect on the surrounding rock.

[0051] In some embodiments, to achieve rapid connection and improve the construction efficiency of cross passages, such as Figure 5 As shown, the upper end of the vertical steel frame 1 is provided with a first connecting plate 11, and the end of the arc-shaped steel frame 2 is provided with a second connecting plate 21. The second connecting plate 21 is attached to the first connecting plate 11, and the first connecting plate 11 and the second connecting plate 21 are fixed by bolts.

[0052] Specifically, several first through holes can be made on the first connecting plate 11, and several second through holes can be made on the second connecting plate 21. The first through holes and the second through holes are aligned. After threaded bolts are passed through the first through holes and the second through holes, nuts are used to tighten them. Bolt connection has the advantages of high strength and convenient installation. When excavating the transverse channel, the arc-shaped steel frame 2 and the vertical steel frame 1 are brought into the excavated transverse channel. First, 4cm of concrete can be sprayed, then the steel frame is erected and quickly fixed with bolts. Then, concrete is sprayed to the design thickness. The spray layer should wrap around the steel frame to ensure the stability of the steel frame and provide a smooth base surface for the laying of the waterproof membrane.

[0053] Preferably, a weld is provided between the first connecting plate 11 and the second connecting plate 21, which can be welded first and then connected with bolts to improve the connection strength between the arc-shaped steel frame 2 and the vertical steel frame 1.

[0054] In order to improve the efficiency of force transmission and reduce the misalignment between the first connecting plate 11 and the second connecting plate 21, the first connecting plate 11 and the second connecting plate 21 are both inclined to the horizontal plane, and the center of the arc-shaped steel frame 2 is located on the extended surface of the first connecting plate 11. The surface of the first connecting plate 11 is also the mating surface of the first connecting plate 11 and the second connecting plate 21.

[0055] In some embodiments, to improve the stability of the lower part of the vertical steel frame 1, a locking anchor rod 3 is connected to the lower end of the vertical steel frame 1, and the locking anchor rod 3 can be anchored to the surrounding rock.

[0056] Furthermore, at least two anchor bolts 3 are connected to the lower end of the same vertical steel frame 1, and the free ends of the anchor bolts 3 connected to the same vertical steel frame 1 are separated. By anchoring the anchor bolts 3 to the surrounding rock, the vertical steel frame 1 can be tightened to bring it closer to the side of the surrounding rock. The length direction of the anchor bolt 3 can be inclined to the horizontal plane, with its upper end connected to the vertical steel frame 1 and its lower end located on the outside of the vertical steel frame 1. During construction, the vertical steel frame 1 can be erected first, and then the anchor bolts 3 can be driven into the surrounding rock from both sides of the lower end of the vertical steel frame 1, and the anchor bolts 3 can be connected to the vertical steel frame 1. The separation of the free ends of several anchor bolts 3 can provide forces to the vertical steel frame 1 in multiple directions, which is beneficial to improving its stability.

[0057] The transverse passage steel frame structure described in this embodiment utilizes a support structure composed of an arc-shaped steel frame 2 and two vertical steel frames 1 to support the transverse passage. By setting the center of the arc-shaped steel frame 2 lower than the upper end of the vertical steel frame 1, the force exerted by the arc-shaped steel frame 2 on the vertical steel frame 1 has a horizontal component. This horizontal component can push the upper end of the vertical steel frame 1 against the side rock to resist the pressure exerted by the side rock. By installing anchor bolts 3 at the lower end of the vertical steel frame 1, an anchoring force can be applied to the lower end of the vertical steel frame 1 to resist the side rock. The free ends of several anchor bolts 3 are separated, which can provide forces to the vertical steel frame 1 in multiple directions, thus improving the stability of the vertical steel frame 1. The transverse passage steel frame structure provided in this embodiment has the advantages of simple structure and convenient installation, and can improve the construction efficiency and safety of the transverse passage.

[0058] In some embodiments, the central axis surface 5 is defined as a cross section perpendicular to the transverse channel, the two vertical steel frames 1 are symmetrical about the central axis surface 5, and the center of the arc-shaped steel frame 2 is located on the central axis surface 5.

[0059] In some embodiments, the two vertical steel frames 1 are of equal length and the lower ends of the two vertical steel frames 1 are at the same height. The two vertical steel frames 1 that make up the same horizontal channel steel frame structure can use the same model to reduce manufacturing or procurement costs. The lower ends of the vertical steel frames 1 are preferably set on a flat rock surface, which can provide sufficient support. The flat rock surface also makes it easy for the vertical steel frames 1 to be arranged vertically.

[0060] Furthermore, the center of the arc-shaped steel frame 2 is located at 1 / 3 to 2 / 3 of the height of the vertical steel frame 1. The center being at this height position can keep the vertical and horizontal components of the force transmitted from the arc-shaped steel frame 2 to the vertical steel frame 1 at a reasonable level, and can also prevent the bending moment at the connection between the arc-shaped steel frame 2 and the vertical steel frame 1 from being too large, which is conducive to improving structural safety.

[0061] Specifically, the length of the vertical steel frame 1 is set to H, and the vertical height of the center of the arc-shaped steel frame 2 from the bottom surface of the vertical steel frame 1 is h, where h is any value from 1 / 3H to 2 / 3H.

[0062] Preferably, such as Figure 1 As shown, the arc 'a' of the arc-shaped steel frame 2 is 100° to 130°; further, it is 110° to 120°. By limiting the arc shape of the arc-shaped steel frame 2 within the above range, the arc-shaped steel frame 2 can maintain a good arching amplitude to support the upper surrounding rock.

[0063] In some embodiments, the upper end of the vertical steel frame 1 is provided with a first positioning steel bar 12, one end of which is anchored and the other end is connected to the vertical steel frame 1; both ends of the arc-shaped steel frame 2 are provided with second positioning steel bars 22, one end of which is anchored and the other end is connected to the arc-shaped steel frame 2. For the same location, there can be two first positioning steel bars 12 and two positioning steel bars 22. Before erecting the steel frame, positioning steel bars can be driven into the surrounding rock and one end of the positioning steel bars can extend out of the surrounding rock. The two positioning steel bars are spaced apart to leave space for the placement of the steel frame. The first positioning steel bar 12 and the second positioning steel bar 22 are on the same cross section. By positioning the steel frame in advance with the positioning steel bars, it is convenient to place the steel frames of the same horizontal channel on the same cross section of the horizontal channel, thereby improving the support effect.

[0064] Specifically, each cross passage steel frame structure is provided with two sets of first positioning steel bars 12 and two sets of second positioning steel bars 22, and each set of positioning steel bars includes two corresponding positioning steel bars.

[0065] In some embodiments, the arc-shaped steel frame 2 is an I-beam, and the vertical steel frame 1 is an I-beam. The I-beam has the characteristics of high structural strength and excellent bending resistance. The I-beam includes a web and two flanges. The flanges are perpendicular to the web. The web can be parallel to the cross section of the transverse channel. The two flanges are located on both sides of the web to resist the pressure applied by the surrounding rock.

[0066] Furthermore, the lower part of the vertical steel frame 1 is provided with a base plate 15, which can be a steel plate. At least four through holes can be provided on the base plate 15. After the screw passes through the through holes, it is driven into the rock layer below. The end of the vertical steel frame 1 is close to the upper surface of the base plate 15, and the two can be welded together.

[0067] Furthermore, the two flange plates of the vertical steel frame 1 are defined as inner flange plate 13 and outer flange plate 14, respectively. The inner flange plates 13 of the two vertical steel frames 1 are opposite to each other, and the outer flange plate 14 is located on the side of the inner flange plate 13 away from the other vertical steel frame 1.

[0068] In some embodiments, such as Figure 4As shown, to facilitate the connection between the anchor rod 3 and the vertical steel frame 1 and improve the connection strength between the two, the lower end of the vertical steel frame 1 is provided with a U-shaped steel bar 4. The U-shaped steel bar 4 is U-shaped and includes a middle section 41 and two side sections 42. The two side sections 42 are respectively connected to the two ends of the middle section 41. During installation, the middle section 41 can be made to abut against the inner side of the inner flange plate 13, and the end of the side section 42 away from the middle section 41 can be connected to the side of the outer flange plate 14. The side section 42 is inclined to the horizontal plane. The anchor rod 3 can be parallel to the side section 42. After the two are abutted, they can be welded together. The U-shaped steel bar 4 and the vertical steel frame 1 can also be welded and fixed.

[0069] In a second aspect, embodiments of this application provide a transverse passage support system, including at least two transverse passage steel frame structures as described above. The transverse passage steel frame structures are spaced apart along the longitudinal direction of the passage. The system also includes a plurality of longitudinal reinforcing bars abutting against the inner sides of the vertical steel frame 1 and the arc-shaped steel frame 2. These longitudinal reinforcing bars are parallel to the longitudinal direction of the transverse passage. The same longitudinal reinforcing bar connects at least two longitudinally spaced transverse passage steel frame structures, such as... Figure 8 As shown.

[0070] The cross passage support system described in this embodiment can achieve rapid and stable support for the cross passage by setting several cross passage steel frame structures as described above along the longitudinal direction of the cross passage, thereby improving construction efficiency and safety. Setting longitudinal steel bars between several cross passage steel frame structures can improve the integrity between the cross passage steel frame structures, enabling them to resist relatively large longitudinal external forces and improve the support effect.

[0071] Preferably, the longitudinal reinforcing bars can be placed close to the inside of the steel frame. During construction, the steel frame can be erected first, and then the longitudinal reinforcing bars can be welded to the inside of the steel frame.

[0072] In some embodiments, the longitudinal reinforcement includes a first longitudinal reinforcement 6 and a second longitudinal reinforcement 7. At least two first longitudinal reinforcements 6 are spaced apart along the length direction of the same vertical steel frame 1, and at least two second longitudinal reinforcements 7 are spaced apart along the length direction of the same arc-shaped steel frame 2. The spacing of the longitudinal reinforcements can be 1m, and the longitudinal reinforcements can be grade III steel bars with a diameter preferably 22mm.

[0073] In some embodiments, in order to reduce the swaying of the transverse steel frame structure and to distribute the pressure of the surrounding rock more evenly on the steel frame, a number of padding components are provided between the transverse steel frame structure and the surrounding rock. The padding components are used to fill the gap between the transverse steel frame structure and the surrounding rock, so that the pressure of the surrounding rock will not be concentrated in one place, causing excessive stress and damage to that place.

[0074] Furthermore, to accommodate different gaps and ensure that the pad assembly can tightly seal the gaps after the steel frame is erected, such as... Figure 6 and Figure 7As shown, the pad assembly includes a grooved component 8 and a wedge-shaped component 9. The groove of the grooved component 8 faces the transverse channel steel frame structure or surrounding rock, and the wedge-shaped component 9 can be inserted into the groove of the grooved component 8 and wedged tightly. During installation, the grooved component 8 can be inserted into the gap between the steel frame and the initial shotcrete first. The groove of the grooved component 8 refers to the opening opposite to the bottom of the groove, and the groove of the grooved component 8 faces the transverse channel steel frame structure or surrounding rock. Then, the small end of the wedge-shaped component 9 is inserted into one end of the groove, and opposing forces are applied to the grooved component 8 and the wedge-shaped component 9 from both sides to make the wedge-shaped component 9 be inserted into the groove of the grooved component 8 as much as possible, so that the wedge-shaped component 9 weds the gap tightly. Since the small end of the wedge-shaped component 9 extends into the groove first, as the extension length of the wedge-shaped component 9 increases, the thickness of the pad assembly also increases, so that gaps of different thicknesses can be filled.

[0075] Preferably, the pad block assemblies can be arranged at intervals along the length of the steel frame, with a spacing of 2m; further, each pad block assembly includes one grooved member 8 and two wedge-shaped members 9, with the two wedge-shaped members 9 inserted into the groove of the grooved member 8 and wedged tightly.

[0076] Preferably, both the grooved part 8 and the wedge-shaped part 9 can be concrete components, preferably made of C20 concrete.

[0077] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transverse passageway steel frame structure, characterized in that, It includes an arc-shaped steel frame (2) and two vertical steel frames (1) arranged side by side. The vertical steel frames (1) are arranged vertically. The two ends of the arc-shaped steel frame (2) are respectively connected to the upper ends of the two vertical steel frames (1). The center of the arc-shaped steel frame (2) is lower than the upper end of the vertical steel frame (1). The upper end of the vertical steel frame (1) is provided with a first connecting plate (11), the first connecting plate (11) is inclined, and the center of the arc-shaped steel frame (2) is located on the extended surface of the first connecting plate (11). The end of the arc-shaped steel frame (2) is provided with a second connecting plate (21), which is in contact with the first connecting plate (11); The lower end of the vertical steel frame (1) is connected to at least two locking anchor rods (3), which are used to anchor to the surrounding rock and are separated from the free end of the locking anchor rod (3) connected to the same vertical steel frame (1).

2. The transverse passage steel frame structure according to claim 1, characterized in that, The two vertical steel frames (1) are of equal length and the lower ends of the two vertical steel frames (1) are at the same height. The center of the arc-shaped steel frame (2) is located at 1 / 3 to 2 / 3 of the height of the vertical steel frame (1).

3. The transverse passage steel frame structure according to claim 1, characterized in that, The first connecting plate (11) and the second connecting plate (21) are fixed with bolts.

4. The transverse passage steel frame structure according to claim 1, characterized in that, The upper end of the vertical steel frame (1) is provided with a first positioning steel bar (12), one end of the first positioning steel bar (12) is anchored, and the other end is connected to the vertical steel frame (1); The arc-shaped steel frame (2) is provided with second positioning steel bars (22) at both ends. One end of the second positioning steel bar (22) is anchored and the other end is connected to the arc-shaped steel frame (2).

5. The transverse passage steel frame structure according to claim 1, characterized in that, The arc-shaped steel frame (2) is an I-beam, and the vertical steel frame (1) is an I-beam.

6. The transverse passage steel frame structure according to claim 5, characterized in that, The vertical steel frame (1) includes an inner flange plate (13) and an outer flange plate (14) that are parallel to each other, and the inner flange plates (13) of the two vertical steel frames (1) are opposite to each other; the lower end of the vertical steel frame (1) is provided with a U-shaped steel bar (4), the U-shaped steel bar (4) includes a middle section (41) and two side sections (42), the middle section (41) is close to the inner side of the inner flange plate (13), and the end of the side section (42) away from the middle section (41) is connected to the side of the outer flange plate (14); the side section (42) is inclined, and the locking foot anchor (3) is welded to the side section (42).

7. The transverse passage steel frame structure according to claim 1, characterized in that, The two vertical steel frames (1) are symmetrical about the central axis plane (5), and the center of the arc-shaped steel frame (2) is located on the central axis plane (5).

8. A transverse channel support system, characterized in that, It includes at least two transverse passage steel frame structures as described in any one of claims 1-7, the transverse passage steel frame structures being spaced apart along the longitudinal direction of the passage, and also includes a plurality of longitudinal reinforcing bars abutting against the inner sides of the vertical steel frame (1) and the arc-shaped steel frame (2), the same longitudinal reinforcing bar connecting at least two longitudinally spaced transverse passage steel frame structures.

9. The transverse channel support system according to claim 8, characterized in that, The longitudinal reinforcement includes a first longitudinal reinforcement (6) and a second longitudinal reinforcement (7), with at least two first longitudinal reinforcements (6) spaced apart along the length of the vertical steel frame (1) and at least two second longitudinal reinforcements (7) spaced apart along the length of the arc-shaped steel frame (2).

10. The transverse channel support system according to claim 8, characterized in that, A pad assembly is provided between the transverse steel frame structure and the surrounding rock. The pad assembly includes a grooved part (8) and a wedge part (9). The groove of the grooved part (8) faces the transverse steel frame structure or the surrounding rock, and the wedge part (9) is inserted into the groove of the grooved part (8) and wedged tightly.

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