CN217203603U

CN217203603U - Viaduct pier structure of expressway in super-large cantilever city in high-intensity area

Info

Publication number: CN217203603U
Application number: CN202220795002.4U
Authority: CN
Inventors: 蒲泊舟; 邓宇; 安金星; 徐昊; 黄懋科
Original assignee: TYLin International Engineering Consulting China Co ltd
Current assignee: TYLin International Engineering Consulting China Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-16
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a high-intensity district super large cantilever city expressway overpass pier structure, including overpass pier structure, overpass pier structure mainly comprises overpass pier bent cap, pier, cushion cap, crowd's pile basis, prefabricated little case roof beam, the special way part of subtracting isolation lead support and bus, prefabricated little case roof beam sets up in the upper end of overpass pier bent cap, and subtracts isolation lead support setting between overpass pier bent cap and prefabricated little case roof beam, the cushion cap sets up the lower extreme at pier column, the lower extreme of cushion cap sets up 4 pile footpaths and is 1.5 m's crowd's pile basis. The utility model discloses in, can furthest reduce and lead to the pier structure additionally to add the problem of pier stud because of the increase of city expressway road width, peel off special public transit system in city and urban area vehicle, realized in the true sense that public transport system is rapid, high-efficient, the carbonization of lowly.

Description

Viaduct pier structure of expressway in super-large cantilever city in high-intensity area

Technical Field

The utility model relates to an expressway overpass field especially relates to an expressway overpass pier structure in high intensity district super large cantilever city.

Background

At present, the urban expressway overhead is rapidly developed in China, on one hand, the increasingly increased urban traffic pressure can be relieved, the traffic in the central urban area of large and medium-sized cities is protected to be smooth, the traffic conversion inside and outside the cities is reasonably transited, on the other hand, a viaduct system can be formed by occupying less land resources, and the space under the viaduct is released for other municipal purposes; based on the concept of urban expressway, the elevated construction of the urban expressway mainly comprises the steps of designing and constructing a large cantilever pier matched with a prefabricated upper structure or a columnar pier matched with a large cantilever girder upper structure, reducing the occupation of the elevated construction of the expressway on urban land resources to the maximum extent, and realizing the matching and forming of the urban expressway network and urban roads.

At the present stage, for the segment prefabricated structure mode, in a high-intensity area, due to the poor engineering geological condition, the requirement on the anti-seismic performance of the structure is high, while for the segment prefabricated pier and capping beam structure, the segment and the segment are generally connected in a sleeve grouting mode, a corrugated pipe grouting mode, a reserved slotted hole grouting mode, a socket joint mode, a cast-in-place wet seam connection mode and other modes, although the connection modes are various, the structure is a relatively weak node, and the structure can basically operate in a full life cycle under the action of static load, conventional vehicles and other live loads; however in high intensity district, if experience trivial earthquake or when shaking greatly, the weak point of junction often can influence structure anti-seismic performance, compares down, is 8 degrees district areas at china's earthquake intensity, the utility model discloses a pier structural style can the safe operation, and fully proves in the actual project, the utility model discloses can furthest reduce and lead to additionally to add the problem of pier stud because of city expressway road width increases, through the reasonable overall arrangement of pier, peel off special public transit system in city and urban area vehicle, realized public transport system rapidization, high efficiency, low carbonization in the true sense.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a high-intensity region super large cantilever city expressway viaduct pier structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high-intensity district super large cantilever city expressway overpass pier structure, includes overpass pier structure, overpass pier structure mainly comprises overpass pier capping beam, pier, cushion cap, clump of piles basis, prefabricated little case roof beam, subtracts isolation lead core support and the special part of saying of bus, prefabricated little case roof beam sets up in the upper end of overpass pier capping beam, and subtracts isolation lead core support setting between overpass pier capping beam and prefabricated little case roof beam, the cushion cap sets up the lower extreme at the pier stud, the lower extreme of cushion cap sets up 4 pile footpaths and is 1.5 m's clump of piles basis.

As a further description of the above technical solution:

the pier adopts double columns, the column spacing is 13m, and the pier adopts 2m multiplied by 2m (8.85m cantilever long capping beam pier size) and 2.3m multiplied by 2m (10.65m cantilever long capping beam pier size).

As a further description of the above technical solution:

the plane size of the bearing platform is 6.5m multiplied by 6.5m, and the height of the bearing platform is 2.5 m.

The utility model discloses following beneficial effect has:

1. the earthquake intensity is 8 degrees district areas in our country, the utility model discloses a pier structural style can the safe operation, and fully proves in the actual project.

2. In the construction of high-grade city expressway, the utility model discloses can furthest reduce and lead to additionally setting up the problem of pier column because of city expressway roadwidth increases.

3. The utility model discloses, through the rational arrangement of pier, peel off special public traffic system in city and urban area vehicle, realized public transport system rapidization, high efficiency, low carbonization in the true sense.

Drawings

Fig. 1 is the utility model provides a structural schematic diagram of expressway overpass pier structure in super large cantilever city of high intensity district.

Illustration of the drawings:

1. a viaduct pier capping beam; 2. a bridge pier; 3. a bearing platform; 4. pile group foundation; 5. prefabricating a small box girder; 6. a shock absorption and isolation lead support; 7. bus lane.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides an embodiment: a viaduct pier structure of an ultra-large cantilever city expressway in a high-intensity area comprises a viaduct pier structure, wherein the viaduct pier structure mainly comprises viaduct pier capping beams 1, piers 2, a bearing platform 3, a pile group foundation 4, prefabricated small box beams 5, shock absorption and isolation lead core supports 6 and a bus special lane 7, the prefabricated small box beams 5 are arranged on the viaduct pier capping beams 1, and the shock absorption and isolation lead core support 6 is arranged between the viaduct pier capping beam 1 and the small prefabricated box girder 5, the small prefabricated box girder 5 is adopted in the upper layer structure, the width of the road width is widened and adjusted by prefabricating the width of the wet joint between the small box girders 5 and increasing the number of the small box girders 5, the arrangement of the lower-structure viaduct pier capping beam 1 and the upper-structure prefabricated small box girder 5 is completely matched, the stress performance of the viaduct pier capping beam 1 is ensured by arranging prestressed steel beams in the viaduct pier capping beam, meanwhile, the slope of the cantilever bottom die of the viaduct pier capping beam 1 is kept 13: the slope of 100 is unchanged, so that the universality of the construction steel template can be effectively improved, the turnover rate is improved, and the cost is reduced;

the cushion cap 3 is arranged at the lower end of the pier column of the pier 2, the lower end of the cushion cap 3 is provided with 4 pile group foundations 4 with the pile diameter of 1.5m, the pier 2 adopts a double-column type, the column spacing is 13m, the pier 2 adopts 2m multiplied by 2m (the size of an 8.85m cantilever long capping beam pier), 2.3m multiplied by 2m (the size of a 10.65m cantilever long capping beam pier), the plane size of the cushion cap 3 adopts 6.5m multiplied by 6.5m, the cushion cap 3 is 2.5m high, and the pier columns are respectively erected in a green belt of a ground road; in the 13m space between the two pillars, the ground bus lane 7 is innovatively introduced, so that the bus lane 7 is really isolated from urban vehicles, the efficiency of public trip is improved, and the carbon emission is reduced. The outside of the green belt where the pier stud is located is provided with a municipal road, and the road standard is flexibly configured according to road network planning and requirements.

The working principle is as follows: prefabricated little case roof beam 5 is connected through subtracting shock insulation lead core support 6 with overpass mound bent cap 1, when the earthquake comes temporarily, the energy-absorbing is carried out through subtracting the change of the yield rigidity of shock insulation lead core support 6, the size of overpass mound bent cap 1 and prefabricated little case roof beam 5 beam-ends sets up abundantly simultaneously, ensure the roof beam measure that falls of preventing of structure, through 2 whole optimization of structure size of pier and the arrangement of crowd's pile foundation 4, make the structure plastic hinge do not appear when the earthquake-resistant analysis, synthesize the antidetonation energy dissipation measure of shock insulation lead core support 6, realize basically that can full life cycle operate in the region that the earthquake intensity is 8 degrees.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a high-intensity district super large cantilever city expressway overpass pier structure, includes overpass pier structure, its characterized in that: viaduct pier structure mainly comprises viaduct pier capping beam (1), pier (2), cushion cap (3), pile foundation (4), prefabricated little case roof beam (5), subtracts shock insulation lead core support (6) and bus lane (7) part, prefabricated little case roof beam (5) set up the upper end at viaduct pier capping beam (1), and subtract shock insulation lead core support (6) and set up between viaduct pier capping beam (1) and prefabricated little case roof beam (5), cushion cap (3) set up the lower extreme at pier (2) pier stud, the lower extreme of cushion cap (3) sets up 4 pile foundations (4) that the stake footpath is 1.5 m.

2. The pier structure of the expressway viaduct in the high-intensity area and the super-large cantilever city of claim 1, wherein: the pier (2) adopts a double-column type, the column spacing is 13m, and the pier (2) adopts 2m multiplied by 2m (8.85m cantilever long capping beam pier size) and 2.3m multiplied by 2m (10.65m cantilever long capping beam pier size).

3. The pier structure of the expressway viaduct in the high-intensity area and the super-large cantilever city of claim 1, wherein: the plane size of the bearing platform (3) is 6.5m multiplied by 6.5m, and the height of the bearing platform (3) is 2.5 m.