Iron-containing lower insertion steel beam construction structure and method

Abstract

The application discloses a kind of iron-related lower insertion steel skeleton beam construction structure and method, structure includes lower opening hoop, top opening is set, it is interval setting multiple rows along the length direction of to be poured platform base;Bottom bar, it is laid in lower opening hoop bottom and is connected with lower opening hoop;Support, it is arranged in lower opening hoop inner side, and lower end is supported on foundation;Edge framework unit, it is arranged in lower opening hoop inner side, and symmetrically arranged in the length direction of support, and edge framework unit is connected with lower opening hoop;Upper opening hoop, bottom opening is set, and it is connected with lower opening hoop to form closed hoop bar structure;Top bar, it is arranged in upper opening hoop bar, and is connected with upper opening hoop;Inner framework unit, it is arranged in support inner side, and the support hoop is on inner framework unit;Steel skeleton beam, lower end is fixedly connected with support, and upper end extends out the top surface of to be poured platform base, and the steel skeleton beam is provided with the perforation for top bar to pass through.This application has the advantages of simple structure, easy installation, good stress performance.

Description

Technical Field

[0001] This invention relates to the technical field of building foundation construction, and in particular to a construction structure and method for steel beams inserted under ironwork. Background Technology

[0002] Steel-concrete composite columns are composite structural members in which steel sections are incorporated into concrete columns. They combine the advantages of both steel and concrete structures. Steel-concrete composite columns have high ductility and excellent seismic performance. Compared with steel structures, they also have advantages such as good fire resistance, good structural stability, and steel saving. Therefore, steel-concrete composite columns are increasingly widely used in high-rise and super high-rise buildings.

[0003] In the connection node between the steel-concrete composite column and the foundation cap, the column base, as the key part connecting the upper steel column and the lower foundation, plays a crucial role in reliably transferring the internal force of the column to the foundation and ensuring the overall performance of the structure under vertical and horizontal loads.

[0004] Currently, there are three main connection methods between the column base and the foundation of steel-concrete composite columns: supported, embedded, and externally enclosed. Among these, the embedded column base is the most widely used due to its better integrity and seismic performance. In the traditional embedded column base construction, the base of the steel column needs to be inserted into the foundation to a certain depth and anchored to the foundation using anchor bolts. The pre-embedding accuracy of the anchor bolts directly affects the installation quality of the first section of the steel column. Existing embedded column bases and their pre-embedding construction methods mainly have the following drawbacks: Pre-embedded positioning accuracy is difficult to guarantee, and rebar installation is challenging. The positioning of embedded column base steel in the foundation faces limitations such as dense rebar and limited space. Traditional positioning brackets alone cannot guarantee accuracy while also ensuring ease of construction. More importantly, rebar installation must be carried out after the steel column construction is completed. The dense rebar and the shear nails covering the surface of the steel column make rebar installation very difficult. It often requires on-site adjustment of rebar position or bending of rebar to avoid embedded components. This not only affects construction efficiency but may also weaken the load-bearing capacity of the joint. The stress performance of column base joints under horizontal loads needs improvement. Steel-concrete composite column bases are typically connected to the pile cap only via pre-embedded anchors, making them prone to localized failure under horizontal loads. The overall integrity and shear capacity of the joints are insufficient. Summary of the Invention

[0005] This invention provides a construction structure and method for steel beams inserted under railway tracks that are simple in structure, easy to install, and have good stress performance.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention relates to a steel-framed beam construction structure for railway construction, comprising: The bottom opening hoop is set with an opening at the top, and multiple hoops are set at intervals along the length of the foundation to be poured. The bottom reinforcement bar is laid at the bottom of the lower open hoop and connected to the lower open hoop. The bracket is located inside the lower opening hoop, and its lower end is supported on the foundation. The side frame unit is located inside the lower opening hoop and is symmetrically arranged on both sides of the support length direction. The side frame unit is connected to the lower opening hoop. The top-opening hoop has an opening at the bottom, which connects with the bottom-opening hoop to form a closed hoop structure; The top reinforcement bar is located inside the upper open hoop and is connected to the upper open hoop. The inner frame unit is located inside the support and extends along the length of the foundation to be poured. The support clamp is attached to the inner frame unit. The steel beam has its lower end fixedly connected to the support and its upper end extending out of the top surface of the foundation to be poured. The steel beam is provided with through holes for the top reinforcement to pass through.

[0007] This invention relates to a construction structure for a steel-reinforced beam with an under-support structure. Further, the side frame unit includes side main reinforcement, a first inner main reinforcement, and side stirrups. The side stirrups are symmetrically arranged on both sides of the support. The side main reinforcement and the first inner main reinforcement pass through the side stirrups and are spaced multiple times along the height direction of the side stirrups. The side main reinforcement is located near the outer side of the foundation to be poured. The side stirrups are wrapped around the outside of the bottom reinforcement, the side main reinforcement, the first inner main reinforcement, and the top reinforcement, connecting them into a whole.

[0008] The present invention relates to a construction structure for a steel-framed beam inserted under a steel structure. Further, the inner frame unit includes a second inner main reinforcement and inner stirrups. The second inner main reinforcement is spaced apart on the bottom surface of the support along the width direction of the foundation to be poured. The inner stirrups connect the bottom reinforcement and the second inner main reinforcement into a whole.

[0009] The present invention relates to a construction structure for a steel beam inserted under a railway frame. Further, the support includes two longitudinal members arranged horizontally to each other, multiple transverse members connected between the longitudinal members, and a support member connected to the bottom of the longitudinal members. The middle part of the support member is connected to a central support, which is arranged circumferentially around the support.

[0010] The present invention relates to a construction structure for a steel beam inserted under a railway frame. Further, a reinforcing main bar is provided below the top bar passing through the steel beam. A through hole is provided on the steel beam, through which the reinforcing main bar passes through the steel beam. The reinforcing main bar and the top bar are connected as a whole by reinforcing stirrups.

[0011] The present invention relates to a construction structure for a steel frame beam with an inserted steel frame. Further, the steel frame beam includes a steel beam fixedly installed on the top surface of a support and a steel column fixed on the steel beam. The steel beam is pre-embedded in the foundation to be poured, and the upper end of the steel column extends out of the top surface of the foundation to be poured.

[0012] The present invention relates to a construction structure for a steel-reinforced beam with an inserted steel frame. Furthermore, a vertical tie bar is provided between the top and bottom reinforcement bars along the height direction of the foundation to be poured, and multiple vertical tie bars are provided at intervals along the length direction of the foundation to be poured.

[0013] The present invention relates to a construction structure for steel-framed beams with underlayment. Further, a transverse tie bar is provided inside the side frame unit along the width direction of the side frame unit. The transverse tie bar is located in the middle of the side frame unit, with one end hooked to the side main reinforcement bar and the other end hooked to the first inner main reinforcement bar.

[0014] The present invention provides an installation method comprising the following steps: S1: Install the lower opening hoop and bottom reinforcement to form a top opening steel reinforcement skeleton structure; S2: The side frame units are symmetrically tied to the inside of the lower opening hoop, and the side frame units are connected to the lower opening hoop and the bottom reinforcement as a whole, forming a channel for installing the bracket between the two side frame units. S3: Tie the inner skeleton unit inside the lower opening hoop; S4: Lifting bracket, the bracket clamps are on the inner frame unit, and the lower end of the bracket is supported on the foundation; S5: Hoist the steel beams onto the support frame and fix the steel beams to the support frame; S6: Install the upper open hoop, connect and fix the open end of the upper open hoop to the open end of the lower open hoop to form a closed hoop, insert the top reinforcement into the upper open hoop, and connect the top reinforcement to the upper open hoop and the side skeleton unit; after completing the reinforcement skeleton binding, pour the foundation concrete.

[0015] In the method of the present invention, further, S1: the bottom reinforcement is laid according to the design spacing. During the laying, the bottom opening hoop, the side hoop of the side frame unit and the inner hoop of the inner frame unit are simultaneously placed on the bottom reinforcement. After the bottom reinforcement is laid, the bottom opening hoop, the side hoop and the inner hoop are gradually moved from one end of the bottom reinforcement to the other end. At the same time, the bottom opening hoop, the side hoop and the inner hoop that have been moved to the position are tied and fixed to the bottom reinforcement. S2: Insert the main edge bars and the first inner main bars of the edge skeleton unit into the edge stirrups, tie the main edge bars to the lower opening stirrups and the edge stirrups at the same time, and tie the first inner main bars to the edge stirrups to form the edge skeleton unit. S3: Insert the second inner main bar of the inner skeleton unit into the inner stirrup and tie the second inner main bar to the inner stirrup to form the inner skeleton unit. S4: First, hoist the bracket into place, then install the middle support on the bracket; S5: Hoist the steel beams onto the support frame and fix the steel beams to the support frame; S6: Install the upper open hoop, connect and fix the open end of the upper open hoop to the open end of the lower open hoop to form a closed hoop, insert the top reinforcement into the upper open hoop, and connect the top reinforcement to the upper open hoop and the side frame unit. S7: Install reinforcing main bars and reinforcing stirrups, and tie the reinforcing stirrups to the top bars corresponding to the reinforcing main bars; S8: Install horizontal and vertical tie bars, complete the steel reinforcement cage binding, and pour the foundation concrete.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By simplifying the steel reinforcement structure, the steel reinforcement cage of the foundation is designed as an inner skeleton unit located on both sides of the support and two open hoops, which facilitates the installation of the support and steel beams. 2. By setting an internal skeleton unit inside the support, on the one hand, the reinforcement ratio inside the foundation is guaranteed, and the structural strength of the foundation is improved. On the other hand, it has a limiting effect on the installation of the support, ensuring the installation accuracy of the support. Furthermore, the internal skeleton unit is set inside the support, which can ensure the anchoring effect of the support and improve the stress performance of the steel beam. 3. Add reinforcing bars and stirrups to the steel beam area to increase the integrity of the steel beam and the foundation, and improve the stress performance of the column base joint; 4. By designing large-sized side stirrups on both sides of the support, the operating space is increased, making it easier for construction workers to enter the side stirrups to carry out rebar tying operations.

[0017] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the installation of the lower opening clamp of the present invention; Figure 4 This is a cross-sectional view of the lower opening hoop installation of the present invention; Figure 5 This is a schematic diagram of the side skeleton unit and inner skeleton unit structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the bracket installation of the present invention; Figure 7 This is a cross-sectional view of the bracket installation of the present invention; Figure 8 This is a schematic diagram of the central support installation of the present invention; Figure 9 This is a three-dimensional schematic diagram of the steel beam installation of the present invention; Figure 10 This is a cross-sectional view of the steel beam installation of the present invention.

[0019] Figure label: 1. Bottom reinforcement; 2. Top reinforcement; 3. Bottom opening stirrup; 4. Top opening stirrup; 5. Support; 5.1. Longitudinal members; 5.2. Transverse members; 5.3. Supporting members; 5.4. Central support; 6. Steel frame beam; 6.1. Steel beam; 6.2. Steel column; 7. Transverse short reinforcement; 8. Edge skeleton unit; 8.1. Edge main reinforcement; 8.2. First inner main reinforcement; 8.3. Edge stirrup; 9. Internal skeleton unit; 9.1. Second inner main reinforcement; 9.2. Internal stirrup; 10. Reinforcing main reinforcement; 11. Reinforcing stirrup; 12. Vertical tie bar; 13. Transverse tie bar. Detailed Implementation

[0020] like Figures 1-10 As shown, this invention discloses a construction structure and method for a steel beam inserted under a railway. The structure includes a bottom reinforcement 1, a top reinforcement 2, a side frame unit 8, a lower opening hoop 3, an upper opening hoop 4, an inner frame unit 9, a support 5, and a steel beam 6. The lower opening hoop 3 has a U-shaped structure with an open top, and multiple hoops are evenly spaced along the length of the foundation to be poured. The bottom reinforcement 1 is laid inside the lower opening hoop 3. The bottom reinforcement 1 is laid in the area covered by the foundation to be poured, and multiple hoops are spaced along the width of the foundation to be poured, serving as the bottom reinforcement of the foundation to be poured. In the embodiment of this application, the bottom reinforcement 1 is laid in two layers, and the two layers of bottom reinforcement 1 are separated by transverse short steel bars 7. The two layers of bottom reinforcement 1 are tied and fixed to the lower opening hoop 3 by binding wire.

[0021] The lower opening hoop 3 has a support 5 and a side frame unit 8 inside. The support 5 is located in the middle of the foundation to be poured, and its lower end is supported on the foundation. The side frame unit 8 is symmetrically arranged on both sides of the support 5 along its length, and the side frame unit 8 is connected to the lower opening hoop 3.

[0022] The upper open hoop 4 has a U-shaped structure with an open bottom. It is connected with the lower open hoop 3 to form a closed hoop structure. The upper open hoop 4 has a top reinforcement 2 inside. The top reinforcement 2 is tied and fixed to the upper open hoop 4. The enclosed structure formed by the lower open hoop 3 and the upper open hoop 4 connects the bottom reinforcement 1, the top reinforcement 2 and the side skeleton unit 8 into a whole, forming the steel reinforcement skeleton of the foundation to be poured.

[0023] An inner frame unit 9 is provided on the inner side of the support 5 along the entire length of the foundation to be poured. A steel beam 6 is fixedly installed on the support 5, and the upper end of the steel beam 6 extends out of the top of the foundation to be poured.

[0024] A through hole is provided on the steel beam 6 at the position corresponding to the top reinforcement 2, and the top reinforcement 2 passes through the steel beam 6 through the through hole.

[0025] The edge frame unit 8 includes edge main bars 8.1, first inner main bars 8.2, and edge stirrups 8.3. Multiple edge main bars 8.1 and first inner main bars 8.2 are evenly spaced along the height direction of the foundation to be poured. The edge main bars 8.1 are located close to the outer side of the foundation to be poured. The edge stirrups 8.3 are hooped on the outer side of the bottom bars 1, edge main bars 8.1, first inner main bars 8.2, and top bars 2, connecting them into a whole. The bottom opening stirrups 3 and the edge stirrups 8.3 are hooped on the edge main bars 8.1 at the designed spacing.

[0026] The cross-sectional dimensions of the inner frame unit 9 are the same as those of the inner frame 5. It includes a second inner main reinforcement 9.1 and inner stirrups 9.2. The second inner main reinforcement 9.1 is spaced along the width direction of the foundation to be poured on the bottom surface of the support 5. Multiple sets of inner stirrups 9.2 are provided. Each set of inner stirrups 9.2 is spaced along the length direction of the foundation to be poured. The inner stirrups 9.2 are clamped on the second inner main reinforcement 9.1 and the bottom reinforcement 1. Each inner stirrup 9.2 corresponds to at least two second inner main reinforcements 9.1.

[0027] The support 5 includes two parallel longitudinal members 5.1, multiple transverse members 5.2 connected between the longitudinal members 5.1, and a support member 5.3 connected to the bottom surface of the longitudinal members 5.1. Multiple support members 5.3 are spaced apart along the length of the longitudinal members 5.1. A central support 5.4 is connected to the middle of the support member 5.3, and the central support 5.4 is arranged around the circumference of the support 5.

[0028] A reinforcing main bar 10 is provided below the top bar 2 passing through the steel beam 6. The steel beam 6 has a through hole, through which the reinforcing main bar 10 passes through the steel beam 6. The reinforcing main bar 10 and the top bar 2 are connected as a whole by reinforcing stirrups 11. Multiple sets of reinforcing stirrups 11 are arranged at intervals along the width direction of the steel beam 6. Each set of reinforcing stirrups 11 is arranged at intervals along the length direction of the foundation to be poured. In the embodiment of this application, each reinforcing stirrup 11 is tied to two top bars 2.

[0029] The steel beam 6 includes a steel beam 6.1 fixedly installed on the top surface of the support 5 and a steel column 6.2 fixed on the steel beam 6.1. The steel beam 6.1 is embedded in the foundation to be poured, and the upper end of the steel column 6.2 extends out of the top surface of the foundation to be poured.

[0030] Furthermore, vertical tie bars 12 are strung between the top reinforcement 2 and the bottom reinforcement 1 along the height direction of the foundation to be poured. Multiple vertical tie bars 12 are spaced apart along the length direction of the foundation to be poured. The tie bars are located in the side frame unit 8, with their upper ends hooked to the top reinforcement 2 and their lower ends hooked to the bottom reinforcement 1.

[0031] A transverse tie bar 13 is provided inside the side frame unit 8 along the width direction of the side frame unit 8. Multiple transverse tie bars 13 are provided at intervals along the length direction of the foundation to be poured. The transverse tie bar 13 is located in the middle of the side frame unit 8, with one end hooked on the side main reinforcement bar 8.1 and the other end hooked on the first inner main reinforcement bar 8.2.

[0032] This application has the following main advantages compared to the prior art: 1. The steel reinforcement cage of the foundation is designed as inner skeleton units 9 located on both sides of the support 5 and two open hoops, which facilitates the installation of the support 5 and the steel beam 6. 2. By setting an inner skeleton unit 9 inside the support 5, on the one hand, the reinforcement ratio inside the foundation is guaranteed, and the structural strength of the foundation is improved. On the other hand, it has a limiting effect on the installation of the support 5, ensuring the installation accuracy of the support 5. Furthermore, the inner skeleton unit 9 is set inside the support 5, which can ensure the anchoring effect of the support 5 and improve the stress performance of the steel beam 6. 3. Reinforcing bars and reinforcing stirrups 11 are added to the area of ​​steel beam 6 to increase the integrity of steel beam 6 and the foundation and improve the stress performance of the column base joint; 4. By designing large-sized side stirrups 8.3 on both sides of the support 5, the operating space is increased, making it easier for construction personnel to enter the side stirrups 8.3 to carry out steel bar binding operations.

[0033] The construction method includes the following steps: S1: Accurately mark the installation position of the support 5 on the foundation to be poured, and lay the bottom reinforcement 1 of the lower layer according to the design spacing. When laying, simultaneously put the lower opening hoop 3, the side hoop 8.3 and the inner hoop 9.2 on the bottom reinforcement 1. Lay the transverse short steel bars 7 on the lower bottom reinforcement 1, and lay the upper bottom reinforcement 1 on the transverse short steel bars 7. Move the lower opening hoop 3, the side hoop 8.3 and the inner hoop 9.2 gradually from one end of the bottom reinforcement 1 to the other end according to the design spacing. At the same time, tie the lower opening hoop 3, the side hoop 8.3 and the inner hoop 9.2 that have been moved into place to the bottom reinforcement 1.

[0034] S2: Insert the side main reinforcement 8.1 and the first inner main reinforcement 8.2 into the side stirrup 8.3. After adjusting the spacing of the side main reinforcement 8.1 and the first inner main reinforcement 8.2 respectively, tie the side main reinforcement 8.1 to the lower opening stirrup 3 and the side stirrup 8.3 at the same time, and tie the first inner main reinforcement 8.2 to the side stirrup 8.3 to form a steel skeleton with an opening at the top; the support 5 is formed between the two side skeleton units 8.

[0035] S3: Insert the second inner main bar 9.1 through the inner stirrup 9.2, and tie the second inner main bar 9.1 to the inner stirrup 9.2 to form the inner skeleton unit 9.

[0036] S4: Hoist the bracket 5 vertically from between the two side frame units 8 to the installation position. At the same time, the bracket 5 is clamped on the inner frame unit 9. The lower end of the bracket 5 is supported on the foundation, and the upper bottom surface is supported on the inner frame unit 9. The two sides of the bracket 5 are clamped on both sides of the inner frame unit 9. Then install the middle support 5.4 to complete the installation of the bracket 5.

[0037] S5: Hoist the steel beam 6 onto the bracket 5, adjust the steel beam 6 to the installation position, and weld the lower end of the steel beam 6 to the bracket 5 for fixation.

[0038] S6: Install the upper open hoop 4, connect and fix the open end of the upper open hoop 4 and the open end of the lower open hoop 3 to form a closed hoop, insert the top reinforcement 2 through the upper open hoop 4, and tie and fix the top reinforcement 2 to the upper open hoop 4 and the side hoop 8.3. The top reinforcement 2 located in the area of ​​the steel beam 6 passes through the steel beam 6 through the perforation on the steel beam 6.

[0039] S7: Install reinforcing main bars 10 and reinforcing stirrups 11, and tie the top bar 2 corresponding to the reinforcing main bars 10 to the reinforcing stirrups 11.

[0040] S8: Install horizontal tie bars 13 and vertical tie bars 12, complete the steel reinforcement cage binding, and pour the foundation concrete.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A steel-framed beam construction structure for railway crossings, characterized in that, include: The lower opening hoop (3) is set with an opening at the top, and multiple hoops are set at intervals along the length of the foundation to be poured; Bottom reinforcement (1) is laid at the bottom of the lower opening hoop (3) and connected to the lower opening hoop (3); The bracket (5) is located inside the lower opening hoop (3), and its lower end is supported on the foundation; Side frame unit (8) is located inside the lower opening hoop (3) and symmetrically located on both sides of the support (5) in the length direction. The side frame unit (8) is connected to the lower opening hoop (3). The upper open hoop (4) has an opening at the bottom, and it is connected with the lower open hoop (3) to form a closed hoop structure; Top reinforcement (2) is placed inside the upper open hoop (4) and connected to the upper open hoop (4); The inner frame unit (9) is located inside the support (5) and extends along the length of the foundation to be poured. The support (5) is clamped on the inner frame unit (9). A steel beam (6) is fixedly connected to a support (5) at its lower end and extends to the top surface of the foundation to be poured at its upper end. The steel beam (6) is provided with a through hole for the top reinforcement (2) to pass through.

2. The construction structure of the steel-framed beam under the railway as described in claim 1, characterized in that, The side frame unit (8) includes a side main bar (8.1), a first inner main bar (8.2), and a side stirrup (8.3). The side stirrup (8.3) is symmetrically arranged on both sides of the support (5). The side main bar (8.1) and the first inner main bar (8.2) pass through the side stirrup (8.3) and are arranged in multiple rows at intervals along the height direction of the side stirrup (8.3). The side main bar (8.1) is arranged close to the outside of the foundation to be poured. The side stirrup (8.3) is tied to the outside of the bottom bar (1), the side main bar (8.1), the first inner main bar (8.2), and the top bar (2).

3. The steel-framed beam construction structure for railway crossing as described in claim 1, characterized in that, The inner skeleton unit (9) includes a second inner main bar (9.1) and an inner stirrup (9.2). The second inner main bar (9.1) is spaced along the width direction of the foundation to be poured on the bottom surface of the support (5). The inner stirrup (9.2) connects the bottom bar (1) and the second inner main bar (9.1) into a whole.

4. The construction structure of the steel-framed beam under the railway as described in claim 1, characterized in that, The bracket (5) includes two longitudinal rods (5.1) arranged parallel to each other, multiple transverse rods (5.2) connected between the longitudinal rods (5.1), and a support rod (5.3) connected to the bottom of the longitudinal rods (5.1). A central support (5.4) is connected to the middle of the support rod (5.3), and the central support (5.4) is arranged around the bracket (5) circumferentially.

5. The construction structure for the steel-framed beam under the railway crossing according to claim 1, characterized in that, A reinforcing main bar (10) is provided below the top bar (2) passing through the steel beam (6). A through hole is provided on the steel beam (6). The reinforcing main bar (10) passes through the steel beam (6) through the through hole. The reinforcing main bar (10) and the top bar (2) are connected as a whole by reinforcing stirrups (11).

6. The construction structure of the steel-framed beam under the railway as described in claim 1, characterized in that, The steel beam (6) includes a steel beam (6.1) fixedly installed on the top surface of the support (5) and a steel column (6.2) fixed on the steel beam (6.1). The steel beam (6.1) is embedded in the surface to be poured, and the upper end of the steel column (6.2) extends out of the top surface of the foundation to be poured.

7. The construction structure for the steel-framed beam under the railway crossing according to claim 1, characterized in that, A vertical tie bar (12) is provided between the top reinforcement bar (2) and the bottom reinforcement bar (1) along the height direction of the foundation to be poured. The vertical tie bar (12) is provided at intervals along the length direction of the foundation to be poured.

8. The construction structure for the steel-framed beam under the railway crossing according to claim 2, characterized in that, A transverse tie rod (13) is provided inside the side skeleton unit (8) along the width direction of the side skeleton unit (8). The transverse tie rod (13) is located in the middle of the side skeleton unit (8), with one end hooked on the side main reinforcement (8.1) and the other end hooked on the first inner main reinforcement (8.2).

9. A method for installing the steel-framed beam construction structure for railway crossing as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: Install the lower opening hoop (3) and the bottom reinforcement (1) to form a top opening steel reinforcement skeleton structure; S2: The side skeleton unit (8) is symmetrically tied to the inside of the lower opening hoop (3), and the side skeleton unit (8) is connected with the lower opening hoop (3) and the bottom reinforcement (1) as a whole, forming a channel between the two side skeleton units (8) for installing the bracket (5). S3: Tie the inner skeleton unit (9) inside the lower opening hoop (3); S4: Lifting bracket (5), the bracket (5) is clamped on the inner frame unit (9), and the lower end of the bracket (5) is supported on the foundation; S5: Hoist the steel beam (6) onto the support (5) and fix the steel beam (6) to the support (5); S6: Install the upper open hoop (4), connect and fix the open end of the upper open hoop (4) to the open end of the lower open hoop (3) to form a closed hoop, insert the top reinforcement (2) through the upper open hoop (4), and connect the top reinforcement (2) to the upper open hoop (4) and the side frame unit (8); after completing the reinforcement frame binding, pour the foundation concrete.

10. The method according to claim 9, characterized in that, S1: Lay the bottom reinforcement (1) according to the design spacing. When laying, simultaneously put the bottom opening hoop (3), the side hoop (8.3) of the side skeleton unit (8) and the inner hoop of the inner skeleton unit (9) onto the bottom reinforcement (1). After the bottom reinforcement (1) is laid, gradually move the bottom opening hoop (3), the side hoop (8.3) and the inner hoop along one end of the bottom reinforcement (1) to the other end. At the same time, tie the moved bottom opening hoop (3), the side hoop (8.3) and the inner hoop to the bottom reinforcement (1) for fixation. S2: Insert the main reinforcement (8.1) and the first inner main reinforcement (8.2) of the edge skeleton unit (8) into the edge stirrup (8.3), tie the main reinforcement (8.1) to the lower open stirrup (3) and the edge stirrup (8.3) at the same time, tie the first inner main reinforcement (8.2) to the edge stirrup (8.3) to form the edge skeleton unit (8); S3: Insert the second inner main bar of the inner skeleton unit (9) into the inner stirrup and tie the second inner main bar to the inner stirrup to form the inner skeleton unit (9); S4: First, hoist the bracket (5) into place, then install the middle support (5.4) on the bracket (5); S5: Hoist the steel beam (6) onto the support (5) and fix the steel beam (6) to the support (5); S6: Install the upper open hoop (4), connect and fix the open end of the upper open hoop (4) to the open end of the lower open hoop (3) to form a closed hoop, insert the top reinforcement (2) into the upper open hoop (4), and connect the top reinforcement (2) to the upper open hoop (4) and the side frame unit (8). S7: Install reinforcing main bars and reinforcing stirrups, and tie the reinforcing stirrups to the top bar (2) corresponding to the reinforcing main bars; S8: Install horizontal and vertical tie bars, complete the steel reinforcement cage binding, and pour the foundation concrete.

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