Straddle-type monorail station and construction method thereof

Abstract

The application provides a straddle-type monorail station and a construction method thereof, and relates to the technical field of railway station construction. The underground layer is located below the ground and is surrounded by side walls and a top plate; equipment management rooms and pipelines are arranged in the underground layer; the platform layer is provided with a rail area and is located above the underground layer; the support layer comprises at least one support column pier arranged in the longitudinal direction, the support column pier is vertically arranged, the bottom of the support column pier is fixedly connected with the underground layer after penetrating through the ground, and the top of the support column pier is fixedly connected with the station hall layer. The underground space between the station piers is used as equipment rooms, heavy equipment is moved to the underground, the weight of the upper layer is reduced, the underground equipment room box space is integrally designed with the column foundation, a combined foundation form of the column pile foundation cap and the box foundation is formed, the integrity and stability of the single-column foundation and the upper structure are improved, and the seismic stress performance is improved.

Description

Technical Field

[0001] This invention relates to the field of railway station construction technology, and more specifically, to a straddle-type monorail station and its construction method. Background Technology

[0002] Straddle-type monorail stations, due to their elevated location in the middle of the road, occupy only roadside green space, thus saving urban land to a significant extent and becoming the most common type of station. However, because the heavy electrical equipment is installed in the elevated section, its application in cities with high seismic fortification intensity is limited. In addition, the station's equipment rooms still require some above-ground space, preventing further improvement in the urban landscape. Summary of the Invention

[0003] The purpose of this invention is to provide a straddle-type monorail station and its construction method to improve the aforementioned problems. To achieve the above objective, the technical solution adopted by this invention is as follows:

[0004] In a first aspect, this application provides a straddle-type monorail station, comprising an underground level located below ground level and enclosed by side walls and a roof slab, wherein equipment management rooms and pipelines are arranged within the underground level, and the thickness of the roof slab is greater than the thickness of the side walls; a platform level with a track area located above the underground level; and a support layer comprising at least one vertically arranged support column, wherein the support column is vertically arranged, the height-to-diameter ratio of the support column is 3, the bottom of the support column passes through the ground and is fixedly connected to the underground level, and the top of the support column is fixedly connected to the concourse level.

[0005] Optionally, the underground layer includes a single-column base, a pile cap, piles, a longitudinal main beam, and longitudinal secondary beams; the pile cap has piles at its bottom, and protrusions at both ends of the pile cap, the height of which is one-third of the height of the pile cap, and the length of which is one-third of the total length of the pile cap; the sidewalls are vertically arranged and fixed at their bottom to the protrusions of the pile cap; the single-column base is vertically arranged and penetrates the top slab, the bottom of which is fixedly connected to the pile cap, and the single-column base is fixed at the center of the end face of the pile cap near the ground; the supporting column pier is embedded inside the single-column base and fixedly connected; the longitudinal main beam is a cuboid structure, embedded at the center of the top slab, longitudinally arranged, and penetrates the single-column base; the longitudinal secondary beams are embedded in the top slab and longitudinally arranged.

[0006] Optionally, the number of the longitudinal secondary beams is not less than 2.

[0007] Optionally, the secondary longitudinal beams are symmetrically located on both sides of the main longitudinal beams, and the secondary longitudinal beams are located at the center position between the central axis of the column base and the edge of the top plate, in order to ensure the supporting rigidity of the top plate.

[0008] Optionally, the supporting columns are arranged in multiple units at intervals along the longitudinal direction.

[0009] Optionally, between the two single-column bases, the basement also includes a floor slab, the floor slab having the same thickness as the top slab, and the floor slab, side walls, and top slab are joined together to form a closed four-sided wall.

[0010] Optionally, the gap between the pile cap and the side wall, below the upper surface of the pile cap, is used for laying pipelines.

[0011] Optionally, the space between the base of the single column, the side wall, and the roof slab can be used as an equipment management room.

[0012] Optionally, the supporting column pier is a reinforced concrete structure, and the base plate, the side walls, and the top plate are reinforced concrete structures.

[0013] Secondly, this application also provides a construction method for a straddle-type monorail station, which is applicable to the straddle-type monorail station described in the first aspect, including: excavating a combined foundation pit of column pile cap and box foundation, and constructing a foundation pit support structure; constructing pile foundations, pile caps, and underground floor slabs, up to the top of the pile caps to embed pre-embedded steel pipe concrete column base slabs; installing the bottom layer steel pipe columns and welding them to the pre-embedded parts; pouring steel pipe concrete, while simultaneously constructing the outer concrete columns, underground side walls, and underground top beam and slab structures; backfilling the foundation pit with soil, and removing the foundation pit support structure; and constructing the supporting column piers by pouring reinforced concrete.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention utilizes the underground space between station piers to house equipment rooms, moving heavy equipment underground and reducing the weight of the upper structure. The underground equipment room's box-shaped space is integrated with the column foundation, forming a combined foundation form that combines column pile caps and box foundations. This improves the integrity and stability of the single-column foundation and the superstructure, as well as enhances its seismic resistance.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the straddle-type monorail station described in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of an underground structure with a base plate as described in an embodiment of the present invention.

[0020] Marked in the image:

[0021] 1. Ground surface; 2. Single column base; 3. Side wall; 4. Top slab; 5. Main longitudinal beam; 6. Secondary longitudinal beam; 7. Pile foundation cap; 8. Base slab; 9. Pile foundation; 10. Support column pier. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Example 1:

[0024] like Figure 1 and Figure 2As shown, this embodiment provides a straddle-type monorail station, including an underground level located below ground level, enclosed by side walls 3 and a roof slab 4. The underground level houses equipment management rooms and pipelines, and the thickness of the roof slab is greater than the thickness of the side walls. A platform level with a track area is located above the underground level. A support layer includes at least one vertically arranged support column 10. The support column 10 is vertically positioned, with a height-to-diameter ratio of 3. The bottom of the support column 10 passes through the ground and is fixedly connected to the underground level, while the top of the support column 10 is fixedly connected to the concourse level.

[0025] In this embodiment, the station consists of an underground level, a support level, and a platform level. Compared with existing stations, the design of the concourse level is reduced, and the electrical equipment and loads in the concourse level are moved to the underground level for prevention, which reduces the volume of the upper level and increases the seismic resistance and stability of the station.

[0026] Optionally, the underground layer includes a single column base 2, a pile foundation 7, piles 9, a longitudinal main beam 5, and a longitudinal secondary beam 6; the pile foundation 9 is provided at the bottom of the pile foundation 7, and the pile foundation 7 has protrusions at both ends, the height of which is one-third of the height of the pile foundation 7, and the length of which is one-third of the total length of the pile foundation 7; the side wall 3 is set vertically and fixed at the bottom to the protrusions of the pile foundation 7; the single column base 2 is set vertically and penetrates the top slab 4, the bottom of the single column base 2 is fixedly connected to the pile foundation 7, and the single column base 2 is fixed at the center of the end face of the pile foundation 7 near the ground, and the supporting column pier 10 is embedded in the single column base 2 and fixedly connected; the longitudinal main beam 5 is a cuboid structure, embedded in the center of the top slab 4, set longitudinally and penetrating the single column base 2; the longitudinal secondary beam 6 is embedded in the top slab 4 and set longitudinally.

[0027] In this embodiment, to ensure the safe operation of electrical equipment underground, an underground equipment room is constructed based on the location of the pile foundation cap. The underground equipment room is designed as a combination of a box-shaped space and a single column base 2, forming a combination of the column-supported pile foundation cap 7 and the box foundation. This fully utilizes the underground space, improves the integrity and stability of the single column base 2 and the superstructure, increases the lateral stiffness of the underground space structure, enhances the embedding effect of the single column base 2 on the superstructure, and reduces the load on the station superstructure, further improving the seismic performance of the structure. The top slab 4 of the underground layer provides greater horizontal lateral stiffness, significantly improves the bearing capacity of the single column base 2, and greatly reduces the height of the upper steel-concrete composite structure support column pier 10, effectively reducing the lateral displacement of the superstructure.

[0028] Optionally, the number of secondary longitudinal beams 6 should not be less than 2. The number of secondary longitudinal beams 6 used can be selected according to the actual station construction requirements.

[0029] Optionally, the secondary longitudinal beam 6 is symmetrically located on both sides of the main longitudinal beam 5. The secondary longitudinal beam 6 is located at the center position between the central axis of the single column base 2 and the edge of the top plate, in order to ensure the supporting rigidity of the top plate 4.

[0030] Optionally, multiple support columns 10 are arranged at intervals along the longitudinal direction. The positions of the support columns 10 correspond to the required underground floors to be constructed.

[0031] Optionally, between the two single-column bases 2, the basement also includes a base slab 8, which has the same thickness as the top slab. The base slab 8, together with the side walls 3 and the top slab 4, forms a closed four-sided wall, such as... Figure 2 As shown in the schematic diagram of the underground structure between each single column base 2, the underground layer also needs a base plate to isolate the electrical equipment from the external soil and ensure that the equipment can be placed horizontally to avoid accidents caused by left and right sliding collisions.

[0032] Optionally, the gap between the pile cap 7 and the side wall 3, below the upper surface of the pile cap 7, is used for laying pipelines.

[0033] Optionally, the space between the single column base 2, the side wall 3, and the top plate 4 can be used as an equipment management room.

[0034] Optionally, the supporting column pier 10 is a steel-concrete structure, while the bottom slab 8, side walls 3, and top slab 4 are reinforced concrete structures to ensure the overall stability of the straddle-type monorail station. Example 2:

[0035] This application provides a construction method for a straddle-type monorail station, applicable to the straddle-type monorail station described in Embodiment 1, comprising:

[0036] Step S100. Excavate the combined foundation pit of the column pile cap 7 and the box foundation, and construct the foundation pit support structure;

[0037] Step S200. Construct pile foundation 9, pile foundation cap 7, and underground floor slab, and construct to the top of pile foundation cap 7 to embed steel pipe concrete column base plate pre-embedded parts;

[0038] Step S300. Install the bottom steel pipe column and weld it to the embedded parts;

[0039] Step S400. Pour steel pipe concrete, and simultaneously construct the outer concrete columns, the underground side walls 3, and the underground top beam and slab structure;

[0040] Step S500. Backfill the foundation pit with soil and remove the foundation pit support structure;

[0041] Step S600. Pour reinforced concrete for the construction support column pier 10.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A straddle-type monorail station, characterized in that, include: The underground floor is located below the ground and is formed by splicing together side walls (3) and a top plate (4). Equipment management rooms and pipelines are arranged in the underground floor. The thickness of the top plate is greater than the thickness of the side walls. A platform level, on which a track area is provided, is located above the underground level; The support layer includes at least one support column (10) arranged in the longitudinal direction. The support column (10) is arranged vertically. The ratio of the height to the diameter of the support column (10) is 3. The bottom of the support column (10) passes through the ground and is fixedly connected to the underground layer. The top of the support column (10) is fixedly connected to the platform layer. in The underground layer includes a single column base (2), a pile cap (7), a pile foundation (9), a longitudinal main beam (5), and a longitudinal secondary beam (6); The bottom of the pile foundation cap (7) is provided with a pile foundation (9), and the two ends of the pile foundation cap (7) are provided with protrusions. The height of the protrusions is one-third of the height of the pile foundation cap (7), and the length of the protrusions is one-third of the total length of the pile foundation cap (7). The side wall (3) is set vertically and its bottom is fixed to the protrusion of the pile cap (7); The single column base (2) is vertically arranged to penetrate the top plate (4). The bottom of the single column base (2) is fixedly connected to the pile foundation (7). The single column base (2) is fixed at the center of the end face of the pile foundation (7) near the ground. The support column pier (10) is embedded in the single column base (2) and fixedly connected. The longitudinal main beam (5) is a cuboid structure, embedded in the center of the top plate (4), and is longitudinally arranged and passes through the single column base (2); The longitudinal secondary beam (6) is embedded in the top plate (4) and arranged longitudinally; The longitudinal secondary beam (6) is symmetrically located on both sides of the longitudinal main beam (5). The longitudinal secondary beam (6) is located at the center position between the central axis of the single column foot (2) and the edge of the top plate, in order to ensure the supporting rigidity of the top plate (4). Between the two single column bases (2), the underground layer also includes a base plate (8), the base plate (8) has the same thickness as the top plate, and the base plate (8) is spliced ​​with the side wall (3) and the top plate (4) to form a closed four-sided wall.

2. The straddle-type monorail station according to claim 1, characterized in that... The number of the longitudinal secondary beams (6) is not less than 2.

3. The straddle-type monorail station according to claim 1, characterized in that... The supporting column piers (10) are multiple ones arranged at intervals along the longitudinal direction.

4. The straddle-type monorail station according to claim 1, characterized in that... The gap between the pile cap (7) and the side wall (3) below the upper surface of the pile cap (7) is used for laying pipelines.

5. The straddle-type monorail station according to claim 4, characterized in that... The space between the single column base (2), the side wall (3), and the top plate (4) serves as an equipment management room.

6. The straddle-type monorail station according to claim 1, characterized in that... The supporting column pier (10) is a steel-concrete structure, and the bottom plate (8), the side wall (3) and the top plate (4) are reinforced concrete structures.

7. A construction method for a straddle-type monorail station, the construction method being applicable to the straddle-type monorail station as described in any one of claims 1-6, characterized in that, include Excavate the combined foundation pit of the column pile cap (7) and box foundation, and construct the foundation pit support structure; Construction of pile foundation (9) and pile foundation cap (7) and underground floor slab, and construction up to the top of the pile foundation cap (7) to embed steel pipe concrete column base plate pre-embedded parts; Install the bottom steel pipe columns and weld them to the embedded parts; Pour steel pipe concrete, and at the same time construct the outer concrete columns and the underground side walls (3) and the underground top beam and slab structure; Backfill the foundation pit with soil and dismantle the foundation pit support structure; The construction support column pier (10) is filled with reinforced concrete.

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