A combined structure of a suspension type monorail cable-stayed bridge with a pavilion, a pier and a tower

Abstract

The application relates to a suspension type single-track cable-stayed bridge combined structure of a pavilion, a pier and a tower, which comprises a tower pavilion, a main tower and a U-shaped main beam, wherein the suspension type single-track cable-stayed bridge is provided with the tower pavilion on the two sides of the midspan position, the tower pavilion is connected with the main tower through a middle supporting point cross beam, the tower pavilion is supported below the main tower as a pier, the U-shaped main beam is arranged along the bridge direction and is connected with the U-shaped main beams on the two sides through a midspan cross beam to form an integral structure, the main tower is connected with the U-shaped main beams on the two sides through cable stays to form a cable-stayed system, and the U-shaped main beam is used for installing the suspension type single-track traffic facilities. The application has the advantages that the classical pavilion and the modern suspension type single-track cable-stayed bridge structure are combined, the pavilion is below and can be used for resting of tourists, the cable-stayed bridge is above and can be used for touring of tourists, one structure displays the traditional appropriateness of movement and rest and the mutual benefit, and the application is a supplement and deepening of the traditional gallery bridge and the cable-stayed bridge type.

Description

Technical Field

[0001] This invention relates to the field of urban rail transit technology, and in particular to a combined structure of a suspended monorail cable-stayed bridge consisting of a pavilion, piers, and a tower. Background Technology

[0002] As an emerging form of rail transit, suspended monorails typically have a span of around 30 meters. For cable-stayed bridges with larger spans, the construction presents challenges due to structural complexity and difficulties. However, as a low-capacity rail transit system, suspended monorails can play a vital role in sightseeing and transportation within scenic areas. Therefore, the inherent aesthetic appeal of cable-stayed bridges makes their application in scenic areas particularly timely.

[0003] Meanwhile, pavilions constitute a significant portion of traditional scenic gardens, representing a distinctive aspect of classical Chinese architectural beauty. The large eaves of these pavilions also offer an interpretation of traditional Chinese clerical script. Integrating traditional Chinese pavilions and their large eaves with emerging rail transit systems vividly showcases the aesthetic requirements of scenic areas and serves as a bridge between traditional culture and modern transportation; however, there are currently no precedents for this approach. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a combined structure of a pavilion, piers, and tower for a suspended monorail cable-stayed bridge. This structure, which utilizes the combined design of pavilions, piers, and towers, is designed to facilitate the construction of a cable-stayed bridge for use across lakes in scenic areas.

[0005] The objective of this invention is achieved through the following technical solutions:

[0006] A combined structure of a pavilion, pier, and tower for a suspended monorail cable-stayed bridge is characterized in that: the combined structure includes a pavilion, a main tower, and a U-shaped main beam, wherein the pavilion is provided on both sides of the mid-span of the suspended monorail cable-stayed bridge, the pavilion is connected to the main tower through a crossbeam at the mid-span, and the pavilion serves as a pier supporting the main tower below; the U-shaped main beam is arranged along the longitudinal direction of the bridge, and the two U-shaped main beams on both sides are connected by a crossbeam at the mid-span to form an integral structure; the main tower is connected to the two U-shaped main beams on both sides through stay cables to form a cable-stayed system; and the U-shaped main beam is used to install suspended monorail transportation facilities.

[0007] The tower pavilion includes several columns and a triangular truss roof. The triangular truss roof is erected above and supported by the columns, and the triangular truss roof and the main tower are an integral structure.

[0008] The triangular truss roof includes a bottom box girder, diagonal bracing box girders, and a top box chamber. The bottom box girders are connected to form a frame structure. The top box chamber is located above the bottom box girder and is connected to the bottom box girder on all sides through the diagonal bracing box girders. The top of the top box chamber is connected to the main tower.

[0009] The bottom box girder, the inclined bracing box girder, and the top box interior are each provided with reinforcing ribs.

[0010] The column is connected to the bottom box beam of the triangular truss roof. An upper steel plate is welded inside the bottom box beam, and a lower steel plate is provided on the periphery of the column. The upper steel plate and the lower steel plate are connected as a whole by high-strength bolts. The column is fixedly connected to the bottom box beam through the connection between the upper steel plate and the lower steel plate.

[0011] The column is a circular cross-section steel structure column, with several horizontal diaphragms arranged at intervals along the height direction inside and vertical stiffening ribs arranged inside.

[0012] The U-shaped main beams on both sides are reinforced by horizontal cross bracing of I-beams.

[0013] The advantages of this invention are: the integration of traditional Chinese elements with modern rail transit is a continuation of traditional culture, fully showcasing both classical and modern beauty, making it a beautiful attraction in scenic areas; at the same time, the lower part of the structure is supported by four or more columns of the pavilion, which greatly improves the lateral and longitudinal stability of the structure and increases its rigidity compared to the traditional single column or row of columns, thus improving the comfort of the suspended monorail; during construction, the pavilion and the landscape bridge are combined into one, saving construction time and investment in the scenic area; furthermore, the support of four or more columns can improve the stability of the structural assembly during the main bridge construction phase, reducing the need for temporary supports at the fulcrums and making construction more convenient. Attached Figure Description

[0014] Figure 1 This is an elevation view of the cable-stayed bridge of the present invention;

[0015] Figure 2 This is a top view of the cable-stayed bridge of the present invention;

[0016] Figure 3 This is a side view of the cable-stayed bridge of the present invention;

[0017] Figure 4 This is a top view of the pavilion in this invention;

[0018] Figure 5 This is a cross-sectional view of the triangular truss of the tower pavilion in this invention;

[0019] Figure 6 This is a structural diagram showing the connection between the column and the triangular truss of the tower pavilion in this invention;

[0020] Figure 7 This is a cross-sectional view of the steel structure column in this invention;

[0021] Figure 8This is a cross-sectional view of the top of the steel structure column in this invention;

[0022] Figure 9 This is a diagram showing the horizontal arrangement of the main beam in this invention;

[0023] Figure 10 This is a structural diagram of the main beam cable-stayed connection in this invention;

[0024] Figure 11 This is a top view of the tower pavilion in Embodiment 2 of the present invention. Detailed Implementation

[0025] 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:

[0026] like Figure 1-11 As shown in the figure, the markings represent: 1. Column, 2. Imitation wood outer edge, 3. Triangular truss roof, 4. Main tower, 5. Imitation wood roof at the top of the tower, 6. U-shaped main beam, 7. Mid-span crossbeam, 8. Mid-span crossbeam, 9. Side span crossbeam, 10. Cable-stayed bridge, 11. End support crossbeam, 31. Bottom box girder, 32. Diagonal bracing box girder, 33. Top box chamber, 34. Stiffening plate rib of the tower pavilion, 35. Horizontal diaphragm, 36. High-strength connecting bolt, 37. Upper connecting steel plate, 38. Lower connecting steel plate, 61. Main beam cable-stayed component, 81. I-beam horizontal cross bracing, 111. Steel column outer wall, 112. Horizontal diaphragm, 113. Vertical stiffening rib.

[0027] Example 1: As Figures 1 to 10 As shown, the cable-stayed bridge structure in this embodiment, which uses a pavilion, pier, and tower for a suspended monorail, is divided into three units:

[0028] The first unit is the pavilion-pier main tower structure, which consists of columns 1, a triangular truss roof 3, and a main tower 4. Among them, the four columns 1 and the triangular truss roof 3 mainly constitute the pavilion-tower structure, and in this embodiment, the pavilion-tower structure is used as the pier of the cable-stayed bridge, while the main tower 4 is the tower of the cable-stayed bridge. It is set above the pavilion-tower structure and forms an integrated structure, thus forming the co-construction of pavilion, pier, and tower in this embodiment.

[0029] The second unit consists of a double-track track beam and crossbeam structure, including a U-shaped main beam 6, a box-shaped crossbeam structure, and a triangular horizontal bracing structure. The U-shaped main beam 6 is used to install and support the suspended monorail transit facility. The crossbeam structure is used to connect the U-shaped main beams 6 on both sides to form an integral structure to ensure structural strength and stability. The triangular horizontal bracing structure is used to further strengthen the structure of the U-shaped main beam 6.

[0030] The third unit is a cable structure, including stay cables 10 and main beam cable fasteners 61. The main beam cable fasteners 61 are installed on the U-shaped main beam 6, while the stay cables 10 are used to connect the main tower 4 and the main beam cable fasteners 61, thus forming a cable-stayed system for the U-shaped main beam 6.

[0031] Specifically, in this embodiment, the support column 1 of the tower structure adopts a circular cross-section steel structure column, which has a steel column outer wall 111 with a wall thickness of 12mm-16mm, and the outer surface is coated with anti-corrosion paint such as red paint. Figure 4 As shown, in this embodiment, four columns 1 are used, and the number can be adjusted according to the size of the pavilion and the span of the bridge.

[0032] In this embodiment, as Figure 7 As shown, a circular horizontal diaphragm 112 and vertical stiffening ribs 113 are provided in the middle of the column 1 to enhance the stability of the column. Micro-expansion concrete material can also be poured in to improve the stability of the column. The horizontal diaphragm 112 is evenly spaced along the height of the column 1 and is arranged in its hollow interior to ensure its lateral stiffness, while the vertical stiffening ribs 113 are arranged along the height of the column 1 to improve its vertical stiffness.

[0033] Combination Figure 6 and Figure 8 As shown, the connection between column 1 and the triangular truss roof 3 is made of high-strength bolts. These high-strength bolts consist of two layers of connecting steel plates: an upper connecting steel plate 37 and a lower connecting steel plate 38. The upper connecting steel plate 37 is welded to the bottom box girder 31, and the lower connecting steel plate 38 is welded to the top of column 1 and flush with the internal top diaphragm 112. High-strength connecting bolts 36 are used between the upper and lower connecting steel plates 37 and 38 to securely connect column 1 and the triangular truss roof 3. The lower part of column 1 can be connected to the foundation using shear keys to meet the connection requirements between the steel and concrete, or embedded parts can be used for bolting or welding.

[0034] like Figure 3 and Figure 4 As shown, the triangular truss roof 3 adopts a box-shaped cross-section, which is rectangular in size, approximately 70cm in diameter, and has a wall thickness of approximately 10mm. It consists of a bottom box beam 31, diagonal bracing box beams 32, and a top box chamber 33. In this embodiment, four bottom box beams 31 are welded to form a frame structure. The four ends of this frame structure are connected to and supported by columns 1. The top box chamber 33 is located above the frame structure, and its four sides are connected to the frame structure formed by the bottom box beams 31 through a diagonal bracing box beam 32 on each side.

[0035] In this embodiment, stiffening ribs 34 and diaphragms 35 are welded between the box beams of the triangular truss roof 3 to increase structural strength and stability. The bottom box beam 31, the diagonal bracing box beam 32 and the top box chamber 33 are welded together. During construction, the welding can be done in the factory or on-site and then hoisted.

[0036] In this embodiment, the steel plate of the top chamber 33 is thickened by twice at the position corresponding to the main tower 4, and vertical stiffening ribs are arranged to prevent local warping of the steel plate. The triangular truss roof 3 is a quadrilateral pyramid matching the number of columns 1. A wood-look outer edge 2 is also provided on the periphery of the triangular truss roof 3 to enhance its aesthetic appeal. Specifically, traditional wood-look decorations can be arranged using resin or other structures, in the form of a traditional pavilion eaves structure, extending approximately 3 meters beyond the roof triangular truss structure to fully showcase the pavilion's style. Simultaneously, the eaves structure in the transverse direction should be appropriately shortened to avoid conflict with the main beam and vehicle trajectory lines. The steel structure under the eaves, including the triangular truss roof 3, can also be further decorated with wood-look materials or coated, etc.

[0037] The main tower 4 adopts a hexagonal or octagonal main tower form. The main tower 4 is equipped with horizontal diaphragms and vertical ribs. The horizontal diaphragms and ribs are locally reinforced at the position of the cable saddle. The main tower 4 and the top box chamber 33 of the triangular truss roof 3 are welded together to form an integral unit.

[0038] Combination Figures 1 to 3 As shown, the main beam structure of the second unit adopts a U-shaped main beam 6, with a height of 1.2m, a width of 0.8m, a bottom U-shaped opening of 0.3m, and vertical plate-type stiffening ribs arranged at 2m intervals. The stiffening ribs are 0.18m wide and 12mm thick.

[0039] Combination Figure 1 and Figure 9 As shown, box-shaped crossbeams are arranged at the cable positions of the mid-span and side-span. I-beams are used to horizontally brace the box-shaped crossbeams to form a planar triangular truss structure. The stiffness of the box-shaped crossbeams controls the horizontal deflection of the U-shaped main beam 6. The height is 1m × 0.8m, and the side-span dimensions can be appropriately reduced. The I-beams are welded to the crossbeams and the U-shaped main beam 6. In this embodiment, the box-shaped crossbeams are divided into a central support crossbeam 7, a mid-span crossbeam 8, and a side-span crossbeam 9 according to their arrangement. The central support crossbeam 7 is welded to the top box chamber 33 of the triangular truss roof 3 located in the main tower structure at the corresponding central support position of the main beam. The mid-span crossbeam 8 and the side-span crossbeam 9 are respectively located between the U-shaped main beams 6 in the mid-span or side-span.

[0040] Combination Figure 1 and Figure 10 As shown, the stay cable 10 is made of high-strength steel strand. It is anchored to the main tower 4 and the U-shaped main beam 6. The U-shaped main beam 6 is anchored using horizontal I-beam cross bracing 81, while the main tower 4 is anchored using anchor boxes. The diameter of the stay cable 10 is approximately 20mm-30mm. Furthermore, a spiral sheath can be installed on the stay cable 10 to prevent vibration under wind and rain.

[0041] The construction process in this embodiment includes the following steps:

[0042] 1) such as Figure 1 As shown, the construction of the substructure pile foundation and pile cap is carried out, and relevant steel embedded parts are pre-embedded in the pile cap. The factory prefabricated steel structure column 1 has a diameter of 1.0m and a wall thickness of 16mm. A horizontal diaphragm 112 is arranged every 2m. The horizontal diaphragm 112 is a hollow circular structure. A lower connecting steel plate 38 is arranged at the top, and 16 bolt holes 36 are arranged on the lower steel plate.

[0043] 2) Transport the steel column 1 to the site, hoist it for alignment, and connect it with the embedded parts of the foundation. Depending on the type of embedded parts, the connection can be made by bolts or welding. After the connection is completed, pour micro-expansion concrete from the top until the top.

[0044] 3) such as Figure 5 As shown, the factory prefabricated triangular roof truss 3 has a rectangular cross section for the bottom box beam 31, a rectangular cross section for the diagonal brace 32, and an octagonal top box chamber 33. Tower pavilion stiffening ribs 34 and transverse diaphragms 35 are arranged in all of them. At the same time, a circular upper connecting steel plate 37 is welded at the bottom box beam 31. The size and bolt holes of the upper connecting steel plate 37 correspond to those of the lower connecting steel plate 38.

[0045] 4) Bolt holes corresponding to the high-strength connecting bolts 36 are opened at the corresponding positions of the steel columns of the bottom box girder 31, and the steel of the local bottom plate is thickened by 2 times.

[0046] 5) At position 33 of the top box chamber, the top steel plate is thickened, and vertical diaphragms corresponding to the shape of the base of the main tower 4 are arranged.

[0047] 6) Transport the bottom box girder 31, the inclined bracing box girder 32 and the top box chamber 33 to the site for welding and assembly. Then, use a crane to lift them as a whole and bolt them to the already established column 1. During the connection process, pay close attention to the elevation data of each position and control the error to within 0.1%.

[0048] 7) The main tower 4 can be hexagonal, octagonal, or circular, and is manufactured in sections at the factory. Attention should be paid to the construction of the anchor box structure. Alternatively, it can be manufactured as a whole and transported to the site, depending on transportation capacity. After arrival at the site, the imitation wood roof 5 of the tower pavilion is constructed. The bottom of the main tower 4 is welded to the top box chamber 33 of the triangular truss roof 3, and then the other sections are welded together. The imitation wood roof 5 of the tower pavilion uses a steel frame connected to the top section of the main tower.

[0049] 8) The U-shaped main beam 6 is manufactured in the factory and transported to the site in sections. It is first welded to the middle span crossbeam 8 and the side crossbeams 9, and then the I-beam horizontal cross bracing 81 is welded on. After welding, a scaffold is erected for welding and assembly. The elevation data of the scaffold must meet the elevation requirements of the entire beam assembly. When manufacturing the U-shaped main beam 6, the main beam cable fastening components 61 should be pre-embedded according to the design requirements.

[0050] 9) For example Figure 3 As shown, the U-shaped main beam 6 and the triangular truss roof 3 are welded together by the central support beam 7. The central support beam 7 has a box-shaped cross section and a slightly curved shape, resembling a wing span.

[0051] 10) After the entire U-shaped main beam 6 is assembled, the tensioning cable 10 is installed and tensioned to the design value as specified.

[0052] 11) Connect the lower pavilion's imitation wood roof 2, paying attention to the horizontal and vertical dimensions during connection. At this point, the construction of a scenic area suspended monorail cable-stayed bridge spanning the lake, consisting of a tower, pier, and pavilion, is complete.

[0053] During construction, the lower part of the structure is supported by four or more columns 1 of the pavilion. Compared with the traditional single column or row of columns, this greatly improves the lateral and longitudinal stability of the overall structure, increases the rigidity of the structure, and improves the comfort of the suspended monorail. The construction of the pavilion and the landscape bridge is combined into one, which saves the construction period of the scenic area and also saves construction investment. At the same time, the support provided by four or more columns 1 can significantly improve the stability of the structural assembly during the main bridge construction stage, reduce or even eliminate the need to erect temporary supports at the support points, and make the construction more convenient.

[0054] Example 2: Figure 11 As shown, the difference between this embodiment and embodiment one is that this embodiment uses a hexagonal pavilion roof and a structure of 6 columns.

[0055] 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 combined structure of a pavilion, pier, and tower for a suspended monorail cable-stayed bridge, characterized in that: The combined structure includes pavilions, a main tower, and a U-shaped main beam. The pavilions are located on both sides of the mid-span of the suspended monorail cable-stayed bridge. Each pavilion is connected to the main tower via a central support beam, serving as a pier beneath the main tower. The U-shaped main beams are arranged longitudinally along the bridge, and the two U-shaped main beams on either side are connected by a mid-span beam to form an integral structure. The main tower is connected to the two U-shaped main beams via stay cables to form a cable-stayed system. The U-shaped main beams are used to install the suspended monorail transit facilities. Each pavilion includes several columns and a triangular truss roof, which is erected above and supported by the columns. The triangular truss roof and the main tower are an integral structure. The triangular truss roof includes a bottom box beam, diagonal bracing box beams, and a top box chamber. The bottom box beams are connected to form a frame structure. The top box chamber is located above the bottom box beam and is connected to the bottom box beam on all sides through the diagonal bracing box beams. The top of the top box chamber is connected to the main tower. The column is connected to the bottom box beam of the triangular truss roof.

2. The combined structure of a pavilion, pier, and tower in a suspended monorail cable-stayed bridge as described in claim 1, characterized in that: The bottom box girder, the inclined bracing box girder, and the top box interior are each provided with reinforcing ribs.

3. The combined structure of a pavilion, pier, and tower in a suspended monorail cable-stayed bridge as described in claim 1, characterized in that: The bottom box girder has an upper steel plate welded inside, and the column has a lower steel plate on its periphery. The upper steel plate and the lower steel plate are connected as a whole by high-strength bolts, and the column is fixedly connected to the bottom box girder through the connection between the upper steel plate and the lower steel plate.

4. The combined structure of a pavilion, pier, and tower in a suspended monorail cable-stayed bridge as described in claim 1, characterized in that: The column is a circular cross-section steel structure column, with several horizontal diaphragms arranged at intervals along the height direction inside and vertical stiffening ribs arranged inside.

5. The combined structure of a pavilion, pier, and tower in a suspended monorail cable-stayed bridge as described in claim 1, characterized in that: The U-shaped main beams on both sides are reinforced by horizontal cross bracing of I-beams.

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