A method of construction of a steel overpass bridge across a roadway

Abstract

The application relates to a construction method of a steel continuous bridge across a road, comprising the following steps: S1, arranging a support frame on each sidewalk on the two sides, and crossing a continuous bridge frame between the two support frames; S2, erecting a splicing platform above any one support frame and corresponding to the height position of the continuous bridge frame, and arranging a sliding rail on the upper surface of the continuous bridge frame along the length direction of the continuous bridge frame; S3, splicing the middle section of the steel continuous bridge on the splicing platform, and conveying the middle section of the steel continuous bridge to the continuous bridge frame through the sliding rail; S4, dismounting the splicing platform, splicing the two side sections of the steel continuous bridge at the positions of the two support frames respectively, and abutting on the existing building, and connecting the one end of the two side sections of the steel continuous bridge away from the existing building to the two sides of the middle section of the steel continuous bridge. The application splices the steel continuous bridge in sections on the sidewalks, combines the multiple sections of the steel continuous bridge after conveying to the corresponding positions through the sliding rail, and does not affect the motor vehicle lane in the construction process, thereby avoiding the influence of the construction on the urban traffic.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a construction method of a steel bridge spanning a road. Background Art

[0002] In the prior art, when constructing a steel bridge across a road, the conventional method is to set up a temporary cradle above the road for loose assembly. When assembling the steel bridge, supports need to be set up on the road below the steel bridge, which will occupy the motor vehicle lane, easily cause traffic congestion and increase the risk of traffic accidents. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a construction method for a steel bridge across the road. The steel bridge can be assembled in sections on the sidewalks on both sides of the road, and after being transported to the corresponding positions in sections by slide rails, multiple sections of steel bridges can be combined to form a complete steel bridge. The present invention only needs to set up supports on both sides of the road, and will not affect the motor vehicle lane during construction.

[0004] The present invention provides a construction method for a steel bridge spanning a road.

[0005] The road includes a motor vehicle lane in the middle and sidewalks on both sides. Existing buildings are located on the relatively outer sides of the sidewalks. The steel bridge is connected between the existing buildings on both sides. The method is characterized by comprising the following steps:

[0006] S1. Install a support frame on each sidewalk, connect a bridge frame between the tops of the two support frames, and ensure that the bottom of the bridge frame can meet the normal driving conditions of the motor vehicle lane;

[0007] S2. A splicing platform is set up above any one of the support frames and at a height corresponding to the bridge frame, and a slide rail is installed on the upper surface of the bridge frame along the length direction of the bridge frame;

[0008] S3, splicing the steel bridge middle section on the splicing platform, and transporting the steel bridge middle section to the bridge frame via the slide rail;

[0009] S4. Remove the splicing platform, and splice the two side sections of the steel bridge at the positions of the support frames on both sides, and dock the two side sections of the steel bridge on the existing buildings respectively, and connect the ends of the two side sections of the steel bridge away from the existing buildings to the two sides of the middle section of the steel bridge to form a complete steel bridge.

[0010] A further improvement of the present invention is that after the splicing platform is dismantled, scaffolds are respectively erected at the positions of the support frames on both sides, and then the two side sections of the steel bridge are spliced ​​on the scaffolds; after the splicing is completed, the scaffolds are dismantled.

[0011] A further improvement of the present invention is that the middle section of the steel bridge is divided into multiple segments. When executing step S3, the multiple segments are spliced ​​one by one and transported in sequence. During the transportation process, the adjacent segments are connected end to end to finally form the middle section of the steel bridge.

[0012] A further improvement of the present invention is that the slide rail uses a hydraulic sliding system.

[0013] A further improvement of the present invention is that, when installing the support frame, two support columns are first supported, and after the support is completed, a support beam is set between the two support columns. When installing the connecting bridge frame, the bottom of the connecting bridge frame is connected to the top of the support column on the side relatively far away from the existing building.

[0014] A further improvement of the present invention is that, when installing the support frame, a buttress beam is provided on one of the support columns close to the existing building, and the buttress beam is connected to the existing building.

[0015] The present invention provides a construction method for a steel connecting bridge spanning a road. The steel connecting bridge is assembled in sections on the sidewalks on both sides of the road, and after being transported in sections to corresponding positions via slide rails, multiple sections of the steel connecting bridge are combined to form a complete steel connecting bridge. The construction process will not affect the motor vehicle lanes, thereby avoiding the impact of the construction on urban traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of step S1 of a construction method for a steel bridge spanning a road according to the present invention;

[0017] Figure 2 This is a schematic diagram of the middle section of the fifth steel bridge section in a construction method of a steel bridge spanning a road according to the present invention;

[0018] Figure 3 This is a schematic diagram of the middle section of the third steel bridge segment in a construction method of a steel bridge spanning a road according to the present invention;

[0019] Figure 4 A schematic diagram of a middle section of a movable steel bridge in a construction method of a steel bridge spanning a road according to the present invention;

[0020] Figure 5 This is a schematic diagram of step S3 of a construction method for a steel bridge spanning a road according to the present invention;

[0021] In the figure: 1. Steel bridge frame; 2. Support frame; 3. Support column; 4. Support beam; 5. Motor vehicle lane; 6. Pedestrian walkway; 7. Support beam; 8. Slide rail; 9. Subway station; 10. Middle section of steel bridge; 11. Sections on both sides of steel bridge. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] like Figures 1 to 5 As shown, a method for constructing a steel bridge across a road includes a motor vehicle lane in the middle and sidewalks on both sides. There are existing buildings on the outer sides of the sidewalks. The steel bridge connects the existing buildings on both sides, including the following steps:

[0024] like Figure 1 As shown, step S1, a support frame 2 is set on each sidewalk 6 on both sides, and a connecting bridge 1 is connected between the tops of the two support frames 2, and the bottom of the connecting bridge 1 meets the normal driving of the motor vehicle lane;

[0025] Step S2: a steel bridge splicing platform is set up above any support frame 2 and at a height corresponding to the bridge frame 1, and a slide rail 8 is installed on the upper surface of the bridge frame 1 along the length direction of the bridge frame;

[0026] like Figures 2 to 4 As shown, step S3, splicing the steel bridge middle section 10 on the bridge splicing platform and transporting the steel bridge middle section 10 to the bridge frame through the slide rail 8;

[0027] Preferably, in this embodiment, the splicing platform is connected to the bridge frame 1 .

[0028] like Figure 5 As shown, step S4, the splicing platform is removed, and the two side sections 11 of the steel bridge are spliced ​​at the positions of the support frames 2 on both sides, and the two side sections 11 of the steel bridge are respectively docked with the existing buildings, and the ends of the two side sections 11 of the steel bridge away from the existing buildings are respectively connected to the two sides of the middle section 10 of the steel bridge to form a complete steel bridge.

[0029] like Figures 2 to 4 As shown, the steel bridge middle section 10 can be divided into multiple sections. When installing the steel bridge middle section 10, the multiple sections are sequentially transported to the bridge frame middle section via the slide rail 8 and connected to form the steel bridge middle section 10.

[0030] Preferably, if Figures 2 to 5 As shown, in this embodiment, the middle section 10 of the steel bridge is divided into the second section, the third section and the fifth section. After the fifth section is spliced, the fifth section is moved out of the splicing platform through the slide rail 8 and the third section is spliced, and the fifth section and the third section are connected end to end. Then, the second section is spliced ​​and moved in turn. The two side sections 11 of the steel bridge are divided into the first section and the sixth section. After the construction of the middle section 10 of the steel bridge is completed, the two ends are connected to the first section and the sixth section respectively.

[0031] Preferably, if Figure 5As shown, after the splicing platform is dismantled, scaffolds are first set up at the positions of the support frames 2 on both sides, and then the sections 11 on both sides of the steel bridge are spliced ​​on the scaffolds; after the splicing is completed, the scaffolds are dismantled.

[0032] Preferably, in this embodiment, the slide rail 8 adopts a hydraulic sliding system.

[0033] Preferably, if Figure 1 As shown, when installing the support frame 1, two support columns 3 are first supported. After the support is completed, a support beam 4 is set between the two support columns 3. When executing step S3, the bottom of the bridge frame 1 is connected to the top of the support column 3 on the side relatively far away from the existing building.

[0034] Preferably, the support beam 4 in this embodiment is made of parallel steel pipes.

[0035] Preferably, if Figure 1 As shown, in this embodiment, a pad is further provided at the connection between the support column 3 and the connecting bridge 1 .

[0036] Preferably, if Figure 1 As shown, when the support frame 1 is installed, a buttress beam 7 is provided on a support column 3 close to the existing building, and the buttress beam 7 is connected to the existing building.

[0037] Preferably, if Figures 1 to 5 As shown, in this embodiment, a subway station 9 is provided underground at the construction road. When the support columns 3 are provided, the support columns 3 should be arranged at positions away from the subway station 9 .

[0038] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for constructing a steel bridge across a road, wherein the road comprises a motor vehicle lane in the middle and sidewalks on both sides, and existing buildings are located on the opposite outer sides of the sidewalks. The steel bridge is connected between the existing buildings on both sides, characterized in that: The following steps are involved: S1. Install a support frame on each sidewalk, connect a bridge frame between the tops of the two support frames, and ensure that the bottom of the bridge frame can meet the normal driving conditions of the motor vehicle lane; S2. A splicing platform is set up above any one of the support frames and at a height corresponding to the bridge frame, and a slide rail is installed on the upper surface of the bridge frame along the length direction of the bridge frame; S3, splicing the steel bridge middle section on the splicing platform, and transporting the steel bridge middle section to the bridge frame via the slide rail; S4. Dismantle the splicing platform and splice the two side sections of the steel bridge at the positions of the support frames on both sides, and dock the two side sections of the steel bridge on the existing buildings respectively. Connect the ends of the two side sections of the steel bridge away from the existing buildings to the two sides of the middle section of the steel bridge to form a complete steel bridge; When installing the support frame, first support two support columns. After the support is completed, a support beam is set between the two support columns. When installing the bridge frame, the bottom of the bridge frame is connected to the top of the support column on the side relatively far away from the existing building. When installing the support frame, a buttress beam is arranged on one of the support columns close to the existing building, and the buttress beam is connected to the existing building.

2. The method for constructing a steel bridge across a road as claimed in claim 1, characterized in that: After the splicing platform is dismantled, scaffolds are respectively erected at the positions of the support frames on both sides, and then the sections on both sides of the steel bridge are spliced ​​on the scaffolds; after the splicing is completed, the scaffolds are dismantled.

3. The method for constructing a steel bridge across a road according to claim 1, wherein: The middle section of the steel bridge is divided into multiple segments. When the steel bridge executes step S3, the multiple segments are spliced ​​one by one and transported in sequence. During the transportation process, the adjacent segments are connected end to end to finally form the middle section of the steel bridge.

4. The method for constructing a steel bridge across a road as claimed in claim 1, wherein: The slide rail uses a hydraulic sliding system.

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