CN111502347A - Rail transit three-story single-column prefabricated elevated station - Google Patents

Abstract

A three-story single-column assembled elevated station for rail transit includes a three-story structure, the first floor is an overhead floor, the second floor is a station hall floor, and the third floor is a platform floor; The cross beam is lifted to form a single-column T-shaped structure; the horizontal double-column on the station hall floor stands on the cantilever beam on the overhead floor, and supports the single-span cantilever beam to form a double-column π-shaped structure, and the longitudinal I-beam on the station hall floor is installed on the overhead floor. on the support on the cantilever beam; the platform floor track beam and the platform beam are installed on the station hall floor beam through the support; thus, the present invention can conveniently realize prefabricated assembly construction, and many components can be prefabricated and processed in the factory and transported. Assembling on site and completing the prefabricated construction of the entire station can reduce the impact on the existing road traffic, have good social and economic benefits, and have good promotion and application value.

Description

Rail transit three-story single-column prefabricated elevated station

technical field

The invention relates to the technical field of rail transit, in particular to a three-story single-column assembly type rail transit system that can be used in subway systems, light rail systems, monorail systems, trams, maglev systems, automatic guided rail systems, and urban express rail systems. Elevated station.

Background technique

At present, the lines of domestic rail transit projects are often laid along the middle of the road, and the elevated station is often set in the green belt in the middle of the road in the form of a single-column structure. . However, the dry-shaped single-pillar station with the traditional frame-consolidated architecture has the following shortcomings during the construction and use process:

The dry-shaped station with the traditional consolidation system often adopts the concrete structure and the construction method of the cast-in-place support. The construction process takes a long time on the road, which seriously affects the road traffic, and the construction quality of the cast-in-place concrete is difficult to guarantee.

In the traditional single-column dry-shaped station, the piers on the first floor directly lead to the lower floor of the platform slab, and a large-section pier is set in the middle of the station hall, which is unfavorable to the building layout, affects the use function, affects the visual effect, and affects the comfort of passengers. poor.

The traditional single-column dry-shaped station is made of concrete frame beam members in the longitudinal direction. The longitudinal span of the station is limited by the spanning capacity of concrete. The span is generally 12-13m, so the station overhead layer and station hall layer have poor permeability. The interior of the station and the urban landscape effect are poor.

Therefore, in view of the above-mentioned defects, the designer of the present invention has researched and designed a three-story single-column prefabricated elevated station for rail transit to overcome the above-mentioned defects by concentrating on research and design, synthesizing the experience and achievements of related industries for many years. .

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a three-story single-column assembled elevated station for rail transit, which adopts the assembly construction method, reduces the impact on the existing road traffic, shortens the construction period, and has good social benefits; optimizes the traditional station hall floor Columns have good visual effects and improve passenger comfort; using bridge-type stations, the longitudinal span of the station can be increased, and the permeability of the station overhead and station hall layers can be improved, and the interior of the station and the city landscape effect is good.

In order to achieve the above purpose, the present invention discloses a three-story single-column prefabricated elevated station for rail transit, which includes a station foundation and a three-story structure above the station foundation. The three-story structure includes an overhead layer on the first floor and a station on the second floor. The hall level and the platform level of the third floor are characterized by:

The station foundation adopts a pile foundation or an enlarged foundation, and the overhead layer is located on the station foundation, which is a single-column T-shaped structure, including a pier column as a single-column member and a cantilever beam at the top, and the bottom of the single-column member is provided with On the station foundation, the pier column adopts a circular section;

The station hall floor is a double-column π-shaped structure, including a double column and a single-span cantilever beam supported on the double column, the double column adopts a circular section, and a longitudinal I-beam is arranged in the station hall floor. The longitudinal I-beam is installed on the cantilever beam of the overhead layer;

The platform layer includes a track beam and a platform beam located on a single-span cantilever beam, and the track beam adopts a double-line large U beam, a single-line small U beam or a hollow slab beam; the platform beam adopts a steel box beam.

Wherein: when the station foundation is a pile foundation, it includes a pile foundation and a bearing platform, the pile foundation is constructed with prefabricated piles, and the pile foundation is arranged in multiple rows and supported on the bearing platform.

Wherein: the cantilever beam is a prestressed concrete member, which adopts a variable cross-section form, and the beam height gradually decreases from the pier part supported by the pier column in the middle position to the end parts on both sides.

Wherein: the top of the cantilever beam is provided with a groove for placing the longitudinal I-beam of the station hall floor.

Wherein: the longitudinal I-beams of the station hall layer and the cantilever beams of the overhead layer are provided with supports to connect to form a bridge-type system structure.

Wherein: the double columns are two columns and are supported at intervals in the middle of the single-span cantilever beam, the single-span cantilever beam is in the form of constant cross-section in the middle part between the double columns, and the cantilever sections on both sides are in the form of variable sections. In section form, the beam height decreases gradually from the fulcrum of the double column to the end of the cantilever section on both sides.

Wherein: the prefabricated construction method is adopted, and the grouting sleeve combined with the vertical prestressing connection process is used between the cap and the pier column and between the pier column and the cantilever beam; the connection between the cantilever beam and the double column is between the double columns and the single-span cantilever beams are connected by grouting sleeves.

Wherein: the single-span cantilever beam and the platform beam are connected by the platform beam support, and the track beam is connected with the track beam by the track beam support.

Wherein: the longitudinal I-beam of the station hall layer and the steel material of the platform beam are weathering steel.

Wherein: a cast-in-place concrete surface layer is laid on the structural surfaces of the station hall layer and the platform layer, the station hall layer is a station hall layer cast-in-place concrete panel, and the platform layer is a platform layer cast-in-place concrete Panel, the cast-in-place concrete surface layer is provided with steel mesh to increase the structural integrity.

It can be seen from the above content that the rail transit three-story single-column assembled elevated station of the present invention has the following effects:

1. The bridge-type structure system is adopted, the longitudinal span of the structure is increased, the column layout of the station hall layer is optimized, the structural landscape is good, and the whole station is more convenient for prefabricated construction. exist

2. During the construction of the station, the assumption of on-site support can be avoided, the impact on the existing road traffic can be reduced, the construction period can be shortened, the impact on the environment can be reduced, and the construction quality can be improved.

The details of the present invention can be obtained from the description to be described later and the accompanying drawings.

Description of drawings

FIG. 1 shows a transverse cross-sectional view of a three-story single-column assembled elevated station for rail transit of the present invention.

Figure 2 shows a side view of a single rib of the present invention.

Figure 3 shows a side sectional view of the present invention.

Reference number:

1 station foundation; 101 pile foundation; 102 cap; 2 overhead floors; 201 pier column; 202 cantilever beam; 3 station hall floor; 301 station hall double column; 302 station hall floor single-span cantilever beam; 303 support; 304 longitudinal I-beam; 305 station hall floor cast-in-place concrete panel; 4 station floor; 401 track beam; 402 platform beam; 403 platform beam support; 404 track beam support; 405 platform floor cast-in-place concrete panel.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and not to limit the present invention.

Referring to Fig. 1, Fig. 2 and Fig. 3, the three-story single-pillar assembled elevated station for rail transit of the present invention is shown.

The rail transit three-story single-column prefabricated elevated station includes a station foundation 1 and a three-story structure above the station foundation 1. The three-story structure includes an overhead layer 2 on the first floor, a station hall layer 3 on the second floor, and a three-story structure on the third floor. Platform layer 4, wherein the station foundation 1 can adopt a pile foundation or an enlarged foundation according to geological conditions. When the embodiment in the figure is a pile foundation, it can include a pile foundation 101 and a cap 102, and the pile foundation 101 can be prefabricated For pile construction, referring to FIG. 1 and FIG. 2 , the pile foundation 101 may be supported on the cap 102 in three rows at intervals.

The overhead layer 2 is located on the station foundation 1, preferably on the platform 102. The overhead layer is a single-column T-shaped structure, including a pier column 201 as a single-column member and a cantilever beam 202 at the top thereof. The bottom of the column member is set on the station foundation 1, the pier column 201 adopts a circular section, and the cantilever beam 202 is a prestressed concrete member, which adopts a variable section form, from the middle position of the buttress supported by the pier column 201 to the end. The end beam heights on both sides are gradually reduced, and the top of the cantilever beam 202 is provided with a groove for placing the longitudinal I-beam 304 of the station hall floor 3 .

The station hall layer 3 is a double-column π-shaped structure, including a double column 301 and a single-span cantilever beam 302 supported on the double column, and a longitudinal I-beam 304 is arranged in the station hall layer. The I-beam 304 is installed on the cantilever beam 202 of the overhead layer, and a support 303 is provided between the longitudinal I-beam 304 of the station hall layer and the cantilever beam 202 of the overhead layer, which is a bridge structure.

Wherein, the double columns 301 are two columns and both have circular cross-sections and are supported at intervals in the middle of the single-span cantilever beam 302 , and the single-span cantilever beam 302 has an equal cross-section in the middle part between the double columns 301 . The cantilever sections on both sides adopt the form of variable section, and the beam height gradually decreases from the fulcrum of the double column 301 to the ends of the cantilever sections on both sides.

The platform layer includes a track beam 401, a platform beam 402, a platform beam support 403 and a track beam support 404. The track beam 401 can adopt a double-line large U-beam, a single-line small U-beam, a hollow slab according to the form of an interval bridge. Beams, etc. The platform beams 402 can be steel box beams to reduce the dead weight of the structure.

The three-story single-column prefabricated elevated station for rail transit of the present invention adopts the prefabricated construction method, and a grouting sleeve is used between the bearing platform 102 and the pier column 201 and between the pier column 201 and the cantilever beam 202 +Vertical prestressed connection process; grouting sleeves are used to connect the cantilever beam 202 and the double column 301 and between the double column 301 and the single-span cantilever beam 302 .

Wherein, the single-span cantilever beam 302 and the platform beam 402 are connected by a platform beam support 403 , and the track beam 401 is connected by a track beam support 404 .

Wherein, the longitudinal I-beam 304 of the station hall layer and the steel material of the platform beam 402 are weathering steel, which can reduce maintenance during operation.

Wherein, a cast-in-place concrete surface layer is laid on the structural surfaces of the station hall layer 3 and the platform layer 4, the station hall layer 3 is a station hall layer cast-in-place concrete panel 305, and the platform layer 4 is The cast-in-situ concrete panel 405 of the platform layer is provided with steel mesh sheets in the cast-in-place concrete surface layer to increase the structural integrity.

The construction sequence of the present invention is: prefabrication, transportation and pile driving construction of the pile foundation 102 - cast-in-place construction of the cap 102 - prefabrication, transportation and grouting construction of the pier column 201 in the overhead layer - prefabrication and transportation of the cantilever beam 202 in the overhead layer And grouting construction in place - prestressed steel beam tensioning on the top of cantilever cover beam 202 - erection of longitudinal I-beam 304 on the station hall layer in place - cast-in-place panel construction on the station hall layer - prefabrication of double-column 301 in the station hall , Transport in place and grouting construction - station hall single-span cantilever beam 302 prefabricated, transported in place and grouted construction - platform layer track beam 401 prefabricated and erected in place - platform layer platform beam 402 processed and erected in place - platform layer Cast-in-place panel construction.

To sum up, in the three-story single-column prefabricated elevated station of rail transit of the present invention, the bridge-type structure system is adopted, the longitudinal span of the structure is increased, the column arrangement of the station hall layer is optimized, the structure landscape is good, and the whole station is more beautiful. Easy to assemble construction. During the construction of the above-mentioned station, the assumption of on-site support can be avoided, the impact on the existing road traffic can be reduced, the construction period can be shortened, the impact on the environment can be reduced, and the construction quality can be improved.

Moreover, the overhead floor is a single-column T-shaped structure, which is transformed into a double-column π-shaped structure in the station hall. The single-column on the station hall floor and the double-column on the platform floor adopt circular sections to optimize the visual effect of structural components and enhance the landscape. Effect.

The components of the station can be prefabricated in the factory and transported to the site for assembly to complete the prefabricated construction of the entire station.

The pier column, cantilever beam, double column, single-span cantilever beam and track beam are of reinforced concrete structure or prestressed concrete structure, and the longitudinal I-beam and platform beam are of steel structure, which can reduce the self-weight of the structure and increase the longitudinal span of the structure .

It will be apparent that the above descriptions and records are merely examples and are not intended to limit the disclosure, application, or uses of the present invention. While the embodiments have been described and described in the accompanying drawings, this invention is not limited to the specific examples illustrated by the drawings and described in the embodiments as the best mode presently believed to be for carrying out the teachings of this invention. , the scope of the invention shall include any embodiments falling within the preceding description and appended claims.

Claims (10)

1. A three-story single-column prefabricated elevated station for rail transit, comprising a station foundation and a three-story structure above the station foundation, the three-story structure comprising an overhead layer on the first floor, a station hall layer on the second floor, and a platform on the third floor layer, which is characterized by: The station foundation adopts a pile foundation or an enlarged foundation, and the overhead layer is located on the station foundation, which is a single-column T-shaped structure, including a pier column as a single-column member and a cantilever beam at the top, and the bottom of the single-column member is provided with On the station foundation, the pier column adopts a circular section; The station hall floor is a double-column π-shaped structure, including a double column and a single-span cantilever beam supported on the double column, the double column adopts a circular section, and a longitudinal I-beam is arranged in the station hall floor. The longitudinal I-beam is installed on the cantilever beam of the overhead layer; The platform layer includes a track beam and a platform beam located on a single-span cantilever beam, and the track beam adopts a double-line large U beam, a single-line small U beam or a hollow slab beam; the platform beam adopts a steel box beam. 2. The rail transit three-story single-column assembled elevated station as claimed in claim 1, characterized in that: when the station foundation is a pile foundation, it comprises a pile foundation and a bearing platform, the pile foundation is constructed by using prefabricated piles, and the pile foundation It is supported on the platform for multiple rows of spaced arrangement. 3. The rail transit three-story single-column assembled elevated station according to claim 1, wherein the cantilever beam is a prestressed concrete member, and adopts a variable section form, and the pier part supported by the pier column from the middle position The beam height decreases gradually to the ends on both sides. 4 . The three-story single-column assembled elevated station for rail transit according to claim 1 , wherein a groove is provided on the top of the cantilever beam for placing the longitudinal I-beam of the station hall layer. 5 . 5 . The three-story single-column assembled elevated station of rail transit as claimed in claim 1 , wherein the longitudinal I-beam of the station hall floor and the cantilever beam of the overhead floor are provided with supports for connection to form a 5. 6 . Bridge architecture. 6 . The three-story single-column assembled elevated station for rail transit according to claim 1 , wherein the double-columns are two columns and are supported at intervals in the middle of the single-span cantilever beam, and the single-span cantilever beam The middle part of the beam between the double columns adopts the form of constant section, and the cantilever section on both sides adopts the form of variable section, and the beam height gradually decreases from the fulcrum of the double column to the end of the cantilever section on both sides. 7. The three-story single-column prefabricated elevated station for rail transit as claimed in claim 1, wherein a prefabricated construction method is adopted, between the cap and the pier, between the pier and the cantilever beam A grouting sleeve is used in combination with a vertical prestressed connection process; a grouting sleeve is used to connect the cantilever beam and the double column and between the double column and the single-span cantilever beam. 8 . The three-story single-column assembled elevated station for rail transit as claimed in claim 1 , wherein the single-span cantilever beam and the platform beam are connected by a platform beam support, and a track beam is used between the single-span cantilever beam and the platform beam. 9 . Connect the stand. 9 . The three-story single-column assembled elevated station for rail transit as claimed in claim 1 , wherein the longitudinal I-beam of the station hall layer and the steel material of the platform beam are weathering steel. 10 . 10. The rail transit three-story single-column assembled elevated station according to claim 1, wherein a cast-in-place concrete surface layer is laid on the structural surfaces of the station hall layer and the platform layer, and the station hall The upper floor is the cast-in-place concrete panel of the station hall layer, the platform layer is the cast-in-situ concrete panel of the platform layer, and the cast-in-place concrete surface layer is provided with steel mesh to increase the structural integrity.

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