Integrated construction method for canopy and platform layer of elevated station
By integrating the steel canopy and platform level construction, the problems of long construction cycle and difficulty in ensuring quality of elevated stations were solved, achieving efficient and low-cost construction results and optimizing construction technology and stress design.
Patent Information
- Application Number
- CN202512043134.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-24
AI Technical Summary
The construction period for the main structure of the platform level of the elevated station is long, the quality of concrete pouring is difficult to guarantee, the construction of the steel columns of the steel structure canopy is complicated and the quality is difficult to control, and the temperature effect is obvious, leading to concrete cracks.
The construction method of integrating the steel canopy and platform level is adopted. The steel structure canopy columns and platform level steel columns are connected by embedded parts. Precast slab components are used to form an integrated structure, which simplifies the construction process and optimizes the construction sequence.
It improved construction quality and efficiency, reduced material costs, shortened construction period, simplified construction process, reduced material requirements, and made the steel structure more rationally stressed.
Smart Images
Figure CN121556675A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rail transit technology, and in particular to an integrated construction method for elevated station canopies and platform levels. Background Technology
[0002] Currently, the main structure of the elevated station platform level is a frame-column structure, while the steel canopy structure adopts a steel frame structure system. On-site construction involves manually erecting scaffolding before pouring concrete, resulting in a long construction period and difficulty in guaranteeing concrete quality. As the elevated station structure is extremely long, it is subject to significant temperature effects, leading to concrete cracking later in construction. The steel columns for the steel canopy are constructed before the platform level. These columns often need to penetrate the platform level and rest on top of the concrete frame columns in the concourse level. Furthermore, the exterior of the steel columns is encased in concrete, making the construction process complex and complicating quality control. Summary of the Invention
[0003] The purpose of this invention is to address the shortcomings of the prior art by providing an integrated construction method for elevated station canopies and platform levels. This method includes a steel canopy structure, a platform level steel structure system, and a platform level precast wall panel system. By simultaneously placing the steel columns of the steel canopy and the platform level on top of the concrete frame columns of the concourse level, the platform level and the steel canopy adopt a completely integrated structural design. The floor slabs and wall panels of the platform level are all made of precast panels, which greatly improves the construction quality and efficiency.
[0004] The objective of this invention is achieved through the following technical solutions: A construction method for integrating the canopy and platform level of an elevated railway station, characterized by the following steps: During the construction of the station hall, embedded parts are installed in the concrete components of the station hall at the locations corresponding to the steel structure canopy columns and the steel columns of the station hall. The steel structure canopy columns and the station hall steel columns are hoisted and fixedly connected to the embedded parts at the corresponding positions. Several steel structure canopy columns arranged at intervals along the line direction are connected by steel frame beams to form an integral structure, and several station hall steel columns arranged at intervals along the line direction are connected by steel frame beams to form an integral structure. The steel frame beam and secondary beam are hoisted between the steel frame beams on both sides, and the two ends of the steel frame beam are connected to the steel frame beams on both sides respectively. The prestressed concrete hollow floor slab is hoisted, placed on the steel frame beam, and its two ends are connected to the steel frame beam at the corresponding positions. Precast block wall panels are installed on the outer side of the steel structure canopy columns and on the inner side of the steel columns of the station hall. The completed platform level will be used as a construction platform to install the steel canopy structure.
[0005] The bottom of the steel structure canopy column and / or the station hall steel column is welded to the embedded part, and stiffening ribs are used to reinforce the bottom of the steel structure canopy column and / or the station hall steel column at the four corners.
[0006] A number of column base bolts are evenly arranged around the periphery of the embedded part, and the bottom of the column base bolts is embedded in the concrete component.
[0007] Embedded steel plates are provided on the bottom surface of the prestressed concrete hollow floor slab. The embedded steel plates are welded and fixed to the steel frame beam, so that the prestressed concrete hollow floor slab and the steel frame beam are fixedly connected to form an integral structure.
[0008] When the prestressed concrete hollow floor slabs overlap on the flanges of the steel frame beams, a certain distance of gap is left between two adjacent prestressed concrete hollow floor slabs, and this gap is sealed with concrete mortar; the openings in the overlapping part of the prestressed concrete hollow floor slabs are sealed with fireproof putty.
[0009] U-shaped anchor bars are embedded in the precast block wall panel. The open part of the U-shaped anchor bar is anchored in the precast block wall panel, and its bent part extends out of the precast block wall panel and is welded to the corresponding steel structure canopy column or the station hall floor steel column.
[0010] A certain distance is left between the precast block wall panel and the steel structure canopy column or the station hall steel column, and this distance is sealed with fireproof material.
[0011] A wall panel embedded part is fixedly embedded on the top surface of the concrete component. The bent part of the U-shaped anchor bar of the precast block wall panel is welded and fixed to the wall panel embedded part. A certain distance is left between the concrete component and the precast block wall panel, and the gap is sealed with fireproof material.
[0012] When the precast block wall panels are overlapped, a certain distance is left between the overlapping parts of two adjacent precast block wall panels. This gap is sealed with concrete mortar, and the outer surfaces of the two precast block wall panels are connected and fixed with steel plates and bolts.
[0013] Using the completed platform level as a construction platform, the steel frame beams of the canopy are hoisted and spanned between the steel structure canopy columns on both sides, with both ends connected to the steel structure canopy columns respectively; then, rigid tie rods are hoisted and connected between adjacent canopy steel frame beams arranged longitudinally; finally, purlins are hoisted and fixedly connected to the canopy steel frame beams.
[0014] The advantages of this invention are: 1) Compared with cast-in-place concrete structures, this invention has a high degree of assembly, with prefabricated components processed in the factory, ensuring quality and speed of construction, which greatly shortens the construction period.
[0015] 2) After the construction sequence is optimized, the construction process is simple, there is no need for concrete encasing of steel structure column bases, and there is no overlap with other procedures.
[0016] 3) Prestressed concrete hollow floor slabs reduce the number of secondary beams and lower material costs.
[0017] 4) Precast wall panel components are more convenient to construct than on-site block masonry, further shortening the construction period. 5) The integrated design of the steel structure canopy and the platform level steel structure provides a more reasonable stress distribution and also reduces the cross-sectional size of the steel structure canopy columns, thus reducing material costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the steel column base installation structure in this invention; Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the arrangement of pre-embedded bolts in the steel column base of this invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is a longitudinal section view of the prestressed concrete hollow floor slab overlapping at the steel beam in this invention; Figure 6 This is a cross-sectional view of the side connection between adjacent prestressed concrete hollow floor slabs in this invention; Figure 7 This is a schematic diagram of the steel column base stiffening rib in this invention; Figure 8 This is a schematic diagram of the connection structure between the side of the precast wall panel and the steel column in this invention; Figure 9 This is a schematic diagram of the connection structure between the bottom edge of the precast wall panel and the concrete components of the lower station hall in this invention. Figure 10 This is a cross-sectional view of the side connection between adjacent prefabricated wall panels in this invention. Detailed Implementation
[0019] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art: like Figure 1-10As shown in the figure, the markings represent: 1. Embedded steel plate, 1a. Stiffening rib, 1b. Bolt washer, 2. Column base bolt, 3. Concrete component, 4. Steel structure canopy column, 5. Station hall steel column, 6. Steel frame beam, 7. Steel frame beam, 7a. Precast block wall panel, 8. Prestressed concrete hollow floor slab, 9. Platform door railing, 10. Canopy steel frame beam, 11. Rigid tie rod, 12. Purlin, 13. Edge of embedded steel sheet, 14. Fireproof putty, 15. Concrete mortar, 16. Embedded steel sheet, 17. Concrete mortar, 18. U-shaped anchor bar, 19. Fireproof material sealing area, 20. Anchor bar, 21. Wall panel embedded part, 22. Grouting material sealing area, 23. Connecting steel plate, 24. Bolt, 25.
[0020] Example: Figures 1 to 10 As shown, the integrated construction method of the elevated station canopy and platform level in this embodiment includes the construction of three parts: the steel canopy structure system, the platform level steel structure system, and the platform level prefabricated wall panel system.
[0021] Specifically, the construction method in this embodiment is as follows: 1) After the construction of the station hall level and its embedded parts is completed, the crane will lift the steel column 5 of the station hall level and fix the bottom steel column feet.
[0022] like Figure 1 As shown, embedded steel plates 1 and column base bolts 2 are installed on the concrete component 3 of the station hall level for connection with the column bases of the steel structure canopy column 4 and the column bases of the steel column 5 of the platform level. Both must be pre-embedded in the concrete component 3 of the station hall level, and then the embedded plates are tightened with double nuts. The concrete component 3 can be a frame column or frame beam of the station hall level.
[0023] In this embodiment, the embedded steel plate 1 is made of Q235B steel plate with a thickness of not less than 20mm, and a layer of anti-corrosion paint is applied to the outside of the embedded steel plate 1. The bolt washer 1b should be welded to the embedded steel plate 1. The steel structure canopy column 4 and the embedded steel plate 1 are welded together by on-site fillet weld. In addition, the column base bolts 2 are fastened with double nuts. The bolt type 2 is adopted according to the actual calculation requirements and specifications.
[0024] Combination Figure 2 and Figure 4 As shown, the steel columns 5 of the station concourse level are welded to the embedded steel plates 1. The four corners of the steel columns 5 are reinforced with stiffening ribs 1a. The steel columns 5 of the station concourse level use hot-rolled box-section or hot-rolled H-section. The long side of the steel structure canopy column 4 is parallel to the transverse direction of the station, and the short side is perpendicular to the transverse direction of the station. When hot-rolled steel is used for the steel columns 5 of the station concourse level, the surface must be ground to remove stains and rust. First, a layer of primer is applied, then a layer of anti-corrosion paint is applied on the outside of the primer, and finally a layer of fire-retardant paint is applied on the outside of the anti-corrosion paint. The fire-retardant paint used is a non-intumescent fire-retardant paint.
[0025] 2) The crane lifts the steel structure canopy column 4 and fixes the bottom steel column.
[0026] Combination Figure 2 and Figure 4 As shown, the steel structure canopy column 4 is welded to the embedded steel plate 1. The four corners of the steel structure canopy column 4 are reinforced with stiffening ribs 1a, which are as follows: Figure 7 As shown. The steel structure canopy column 4 serves as both the frame column of the steel structure canopy and the frame column of the platform level. This steel structure canopy column 4 uses a hot-rolled box-section or a hot-rolled H-section. The long side of the cross-section of the steel structure canopy column 4 is parallel to the transverse direction of the station, and the short side is perpendicular to the transverse direction of the station. When the steel structure canopy column 4 uses hot-rolled steel, its surface must be ground to remove stains and rust. First, a layer of primer is applied, then a layer of anti-corrosion paint is applied on the outside of the primer, and finally a layer of fire-retardant paint is applied on the outside of the anti-corrosion paint. The fire-retardant paint used is a non-intumescent fire-retardant paint.
[0027] In this embodiment, the stiffening rib 1a is made of Q235B steel. The surface must be polished to remove stains and rust. First, a layer of primer is applied, then a layer of anti-corrosion paint is applied on the outside of the primer, and finally a layer of fire-retardant paint is applied on the outside of the anti-corrosion paint. The fire-retardant paint is a non-intumescent fire-retardant paint.
[0028] 3) The crane lifts the steel frame beam 7 and the steel frame beam 7a, and connects the steel frame beam 7 to the steel structure canopy column 4 and the steel frame beam 7a to the station hall steel column 5. This can be done simultaneously on both sides of the station.
[0029] like Figure 4 As shown, the longitudinally adjacent steel structure canopy columns 4 are connected by bolts and welds through steel frame beams 7. The steel frame beams 7 are made of I-shaped hot-rolled steel. The surface of the hot-rolled steel must be ground to remove stains and rust. First, a layer of primer is applied, then a layer of anti-corrosion paint is applied on the outside of the primer, and finally a layer of fire-retardant paint is applied on the outside of the anti-corrosion paint. The fire-retardant paint is a non-intumescent fire-retardant paint.
[0030] like Figure 4 As shown, the longitudinally adjacent steel columns 5 of the concourse level are connected by bolted welding through steel frame beams 7a. The steel frame beams 7a are made of I-shaped hot-rolled steel. The surface of the hot-rolled steel must be ground to remove stains and rust. First, a layer of primer is applied, then a layer of anti-corrosion paint is applied on the outside of the primer, and finally a layer of fire-retardant paint is applied on the outside of the anti-corrosion paint. The fire-retardant paint is a non-intumescent fire-retardant paint.
[0031] 4) The crane lifts the steel frame beam 6 and the secondary beam, and connects the two ends of the steel frame beam 6 to the steel column 5 of the station hall floor and the steel structure canopy column 4.
[0032] like Figure 4As shown, the steel columns 5 of the station hall level on both sides are connected to the steel structure canopy columns 4 by bolted and welded steel frame beams 6. The steel frame beams 6 are made of I-shaped hot-rolled steel. The surface of the hot-rolled steel must be ground to remove stains and rust. First, a layer of primer is applied, then a layer of anti-corrosion paint is applied on the outside of the primer, and finally a layer of fire-retardant paint is applied on the outside of the anti-corrosion paint. The fire-retardant paint is a non-intumescent fire-retardant paint.
[0033] In this embodiment, to enhance the connection and structural performance between steel frame beam 7 and steel frame beam 7a, secondary beams can be added at the opening locations of both beams. The two ends of the secondary beams are connected to steel frame beams 7 and 7a via friction-type high-strength bolts. Simultaneously, platform screen doors 10 are installed at the opening locations.
[0034] 5) The crane lifts the prestressed concrete hollow floor slab 9 and connects it to the steel frame beam 7 and steel frame beam 7a. Simultaneously, adjacent prestressed concrete hollow floor slabs 9 are installed according to… Figure 6 The concrete mortar 18 was poured and connected in a manner that allowed for simultaneous symmetrical installation on both sides of the station.
[0035] Combination Figure 4 and Figure 5 As shown, the prestressed concrete hollow floor slab 9 is welded to the steel frame beam 7 and the steel frame beam 7a through the end embedded steel plates 17. The four edges 14 of the embedded steel plates 17 should be connected to the flanges of the corresponding frame beam 7 or steel frame beam 7a below through fillet welds, and the weld leg height should not be less than 6mm.
[0036] In this embodiment, combined with Figure 5 and Figure 6 As shown, the width L1 of the prestressed concrete hollow slab 9 is 1.2m. The overlap direction of the slab is parallel to the width direction of the station. The length and thickness H1 of the slab follow the specifications in the 24G408-1 standard drawing set for prestressed concrete hollow slabs. If adjacent prestressed concrete hollow slabs 9 overlap on the upper part of the steel beam flange, the following method is adopted: Figure 5 The connection method involves leaving a 20mm gap between the two slabs, which is sealed with concrete mortar 16, with a strength grade not less than M20. Simultaneously, the hollow openings in the overlapping section of the two slabs need to be sealed with fireproof sealant 15. An embedded steel plate 17 is provided at the bottom end of the prestressed concrete hollow floor slab 9 at the overlapping location. The width of the embedded steel plate 17 should be greater than 1 / 2 the width of the steel beam flange. If the side overlap of the prestressed concrete hollow floor slab 9 is as follows... Figure 6 The connection method is as follows: the side of the overlapping part of the prestressed concrete hollow floor slab 9 is set as a sawtooth shape, and a 20mm gap is left between the two slabs. The gap is sealed with concrete mortar 18, and the strength grade of the mortar is not less than M20.
[0037] 6) The crane lifts the precast block wall panel 8. Following the order of first installing the outer wall panel and the station end wall panel, and then installing the inner wall panel, the precast block wall panel 8 is first connected at the bottom and top, and then the two sides of the precast block wall panel 8 are connected.
[0038] like Figure 8 As shown, the precast block wall panel 8 adopts the type with four-sided reinforcing bars. The top of the U-shaped anchor bar 19 of the precast block wall panel 8 is welded to the steel frame beam 7 and the steel frame beam 7a, and the bottom is welded to the wall panel embedded part 22 of the station hall.
[0039] In this embodiment, the diameter of the U-shaped anchor bars 19 provided on the four sides of the precast block wall panel 8 is not less than 12mm, the anchorage length La is not less than 700mm, and the spacing of the U-shaped anchor bars 19 along the height direction of the panel is not greater than 400mm. When the left (right) side of the precast block wall panel 8 is connected to the steel structure canopy column 4 or the station hall steel column 5, the U-shaped anchor bars 19 are beveled and welded to the steel column, and a fireproof material sealing area 20 is left between the precast block wall panel 8 and the steel column, which is sealed with fireproof material.
[0040] The bottom of the precast block wall panel 8 is bevel-welded with the U-shaped anchor bar 19 and the wall panel embedded part 22 of the station hall floor. The anchor bar 21 and the wall panel embedded part 22 are connected by through-hole plug welding. The anchor bar 21 and the embedded part 22 are pre-embedded in the station hall floor slab. The width of the wall panel embedded part 22 is the same as the thickness of the precast block wall panel 8, and the thickness of the wall panel embedded part 22 is not less than 10mm.
[0041] The width module of the precast block wall panel 8 is 1.2m, and its height and thickness conform to the standard drawing "Interior Partition Walls - Lightweight Panels" - 10J113-1. The left (right) side of the precast block wall panel 8 adopts... Figure 10 The precast block wall panel 8 is joined by serrated edges with grooves on the left and right sides. During the overlap, a 20mm gap is left to form a grouting sealing area 23. After sealing this gap with grout, a connecting steel plate 24 and bolts 25 are used for connection. The connecting steel plate 24 is no more than 10mm thick, and its width matches the width of the groove. The top of the bolts 25 is flush with the outer surface of the precast block wall panel 8 to facilitate subsequent finishing.
[0042] 7) After the platform level construction is completed, the platform level will be used as the construction platform. The steel frame beam 11 of the canopy will be hoisted by a crane. The two cranes on both sides of the station will be used to hoist the steel frame beam 11 of the canopy symmetrically and install it to the steel structure canopy column 4.
[0043] 8) After the steel frame beam 11 of the canopy is installed, hoist the rigid tie rod 12. Hoist and install it symmetrically along both sides of the station.
[0044] 9) After the rigid tie rod 12 is installed, hoist and install the purlin 13.
[0045] 10) After the main structure is completed, install the finishing layer, roof enclosure, and platform doors.
[0046] like Figure 4 As shown, a steel frame beam 11 is fixedly spanned between the steel structure canopy columns 4 on both sides. This steel frame beam 11 is made of I-beam hot-rolled steel, and is bolted and welded to the steel structure canopy columns 4. Rigid tie rods 12 are installed between adjacent steel frame beams 11 and are welded to them. The rigid tie rods 12 are also made of I-beam hot-rolled steel. Purlins 13 are connected to the steel frame beams 11 via purlin brackets, and are made of C-shaped cold-formed thin-walled steel.
[0047] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.
Claims
1. A method for integrated construction of elevated station canopies and platform levels, characterized in that: The construction method includes the following steps: During the construction of the station hall, embedded parts are installed in the concrete components of the station hall at the locations corresponding to the steel structure canopy columns and the steel columns of the station hall. The steel structure canopy columns and the station hall steel columns are hoisted and fixedly connected to the embedded parts at the corresponding positions. Several steel structure canopy columns arranged at intervals along the line direction are connected by steel frame beams to form an integral structure, and several station hall steel columns arranged at intervals along the line direction are connected by steel frame beams to form an integral structure. The steel frame beam and secondary beam are hoisted between the steel frame beams on both sides, and the two ends of the steel frame beam are connected to the steel frame beams on both sides respectively. The prestressed concrete hollow floor slab is hoisted, placed on the steel frame beam, and its two ends are connected to the steel frame beam at the corresponding positions. Precast block wall panels are installed on the outer side of the steel structure canopy columns and on the inner side of the steel columns of the station hall. The completed platform level will be used as a construction platform to install the steel canopy structure.
2. The integrated construction method for elevated station canopy and platform level according to claim 1, characterized in that: The bottom of the steel structure canopy column and / or the station hall steel column is welded to the embedded part, and stiffening ribs are used to reinforce the bottom of the steel structure canopy column and / or the station hall steel column at the four corners.
3. The integrated construction method for elevated station canopy and platform level according to claim 2, characterized in that: A number of column base bolts are evenly arranged around the periphery of the embedded part, and the bottom of the column base bolts is embedded in the concrete component.
4. The integrated construction method for elevated station canopy and platform level according to claim 1, characterized in that: Embedded steel plates are provided on the bottom surface of the prestressed concrete hollow floor slab. The embedded steel plates are welded and fixed to the steel frame beam, so that the prestressed concrete hollow floor slab and the steel frame beam are fixedly connected to form an integral structure.
5. The integrated construction method for elevated station canopy and platform level according to claim 4, characterized in that: When the prestressed concrete hollow floor slabs overlap on the flanges of the steel frame beams, a certain distance of gap is left between two adjacent prestressed concrete hollow floor slabs, and this gap is sealed with concrete mortar; the openings in the overlapping part of the prestressed concrete hollow floor slabs are sealed with fireproof putty.
6. The integrated construction method for elevated station canopy and platform level according to claim 1, characterized in that: U-shaped anchor bars are embedded in the precast block wall panel. The open part of the U-shaped anchor bar is anchored in the precast block wall panel, and its bent part extends out of the precast block wall panel and is welded to the corresponding steel structure canopy column or the station hall floor steel column.
7. The integrated construction method for elevated station canopy and platform level according to claim 6, characterized in that: A certain distance is left between the precast block wall panel and the steel structure canopy column or the station hall steel column, and this distance is sealed with fireproof material.
8. The integrated construction method for elevated station canopy and platform level according to claim 6, characterized in that: A wall panel embedded part is fixedly embedded on the top surface of the concrete component. The bent part of the U-shaped anchor bar of the precast block wall panel is welded and fixed to the wall panel embedded part. A certain distance is left between the concrete component and the precast block wall panel, and the gap is sealed with fireproof material.
9. The integrated construction method for elevated station canopy and platform level according to claim 6, characterized in that: When the precast block wall panels are overlapped, a certain distance is left between the overlapping parts of two adjacent precast block wall panels. This gap is sealed with concrete mortar, and the outer surfaces of the two precast block wall panels are connected and fixed with steel plates and bolts.
10. The integrated construction method for elevated station canopy and platform level according to claim 1, characterized in that: Using the completed platform level as a construction platform, the steel frame beams of the canopy are hoisted and spanned between the steel structure canopy columns on both sides, with both ends connected to the steel structure canopy columns respectively; then, rigid tie rods are hoisted and connected between adjacent canopy steel frame beams arranged longitudinally; finally, purlins are hoisted and fixedly connected to the canopy steel frame beams.