CN214328482U

CN214328482U - Vertical assembled floor beam that connects

Info

Publication number: CN214328482U
Application number: CN202022299009.0U
Authority: CN
Inventors: 李洞明; 周轶琰; 王大栋; 张剑宇
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-10-01
Anticipated expiration: 2030-10-15

Abstract

The vertically-connected assembled floor beam comprises a bridge deck, prefabricated components, tie beams and a pile foundation, wherein the prefabricated components comprise a web and the ground beam which are prefabricated into a whole, the lower edge of the web is connected with the ground beam, more than two prefabricated components are distributed along the transverse bridge direction, the upper edge of the web of each prefabricated component is connected with the bridge deck by a wet joint, the tie beams are connected between the midspan and two ends of the ground beams of the two prefabricated components through pouring concrete, and the junction of the ground beam of each prefabricated component and each tie beam is connected with one pile foundation through pouring concrete; the transverse bridge of the bridge deck is provided with cantilever arms at two sides, and the tail end of each cantilever arm is a horizontal section. The utility model discloses optimize the decking structure of beam on the ground, adopted the structure of vertical connection, avoided the scene to set up the support for construction speed has reduced the site pollution, has realized the low carbon construction.

Description

Vertical assembled floor beam that connects

Technical Field

The utility model belongs to the technical field of the bridge falls to the ground roof beam, concretely relates to assembled of vertical connection falls to ground roof beam.

Background

In the construction of urban viaducts, the road-bridge joints increasingly adopt the structural form of a ground beam, and particularly in areas needing strict control over settlement, such as adjacent rail traffic, important pipelines and the like, the pile foundation is preferably considered when the bridge falls to the ground. The ground beam can effectively reduce the filling height behind the abutment, the filling is replaced by a structure, the problem of bumping at the bridge head is thoroughly solved, and the influence on surrounding structures is reduced.

Referring to fig. 1, a conventional cast-in-place floor beam is composed of a deck plate 1 and a support structure. A plurality of webs 2 and a plurality of cross beams 12 are formed below the bridge deck in a staggered mode, and the supporting structure is a bearing platform below the joint of the webs 2 and the cross beams 12 and a foundation of the bottom of the bearing platform.

The construction mode of traditional floor beam uses cast-in-place as the main, and work such as support setting up, reinforcement bar ligature need be carried out to a large amount of manual works on the scene, and the construction cycle is long, and dangerous high and inefficiency is great to the influence of surrounding environment and road traffic simultaneously.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an assembled roof beam that falls to ground of vertical connection.

The purpose of the utility model can be realized by the following technical scheme: the vertically-connected assembled floor beam comprises a bridge deck, prefabricated components, tie beams and a pile foundation, wherein the prefabricated components comprise a web and the ground beam which are prefabricated into a whole, the lower edge of the web is connected with the ground beam, more than two prefabricated components are distributed along the transverse bridge direction, the upper edge of the web of each prefabricated component is connected with the bridge deck by a wet joint, the tie beams are connected between the midspan and two ends of the ground beams of the two prefabricated components through pouring concrete, and the junction of the ground beam of each prefabricated component and each tie beam is connected with one pile foundation through pouring concrete; the transverse bridge of the bridge deck is provided with cantilever arms on two sides, and the tail end of each cantilever arm on each side is a horizontal section.

Furthermore, a wet joint is reserved between the upper edge of the web plate of each prefabricated part and the bridge deck, annular reinforcing steel bars are reserved on the upper edge of the web plate and the lower surface of the bridge deck and are arranged in a staggered mode, and the upper edge of the web plate is connected with the bridge deck through wet joint pouring concrete.

Furthermore, when the width of a wet joint between the upper edge of the web plate of the prefabricated part and the bridge deck slab is more than or equal to 300mm, the upper edge of the web plate and the bridge deck slab are connected through pouring high-performance concrete through the wet joint.

Furthermore, when the width of a wet joint between the upper edge of the web plate of the prefabricated part and the bridge deck slab is more than or equal to 200mm, the upper edge of the web plate and the bridge deck slab are connected through pouring ultra-high performance concrete through the wet joint.

Furthermore, reinforcing steel bars or reinforcing steel bar connectors are reserved at the middle spans and two ends of the adjacent sides of the ground beams of the adjacent prefabricated parts, the corresponding reinforcing steel bars or reinforcing steel bar connectors on the ground beams of the adjacent prefabricated parts are connected through short reinforcing steel bars in a welded mode, and tie beams are connected between the middle spans and the two ends of the ground beams of the adjacent prefabricated parts through concrete poured on the corresponding reinforcing steel bars or reinforcing steel bar connectors and the short reinforcing steel bars.

Furthermore, holes are formed in the junction of the bottom surface of the ground beam of the prefabricated part and each tie beam, metal corrugated pipes are embedded in each hole, section steel is arranged in the holes of the ground beam and the pile foundation, and high-performance concrete is poured to connect the holes.

Furthermore, an armpit is arranged at the joint of the web plate and the bridge deck plate of the prefabricated part.

Furthermore, the transverse bridge of the bridge deck is provided with cantilever arms at two sides and the tail end of each cantilever arm is a horizontal section.

Compared with the prior art, the beneficial effects of the utility model are that: the beam and the diaphragm plate of the traditional cast-in-place floor beam are eliminated, the bridge deck structure of the floor beam is optimized, and the cantilever arm types of the boundary beam and the middle beam are unified, so that the template of the bridge deck is suitable for both the boundary beam and the middle beam, different bridge widths can be realized only by adjusting the length of the horizontal section of the cantilever arm, and the same template can be adopted for the bridge deck construction of the boundary beam and the middle beam. The floor beam is prefabricated and assembled by adopting a vertical connection structure, so that the field erection of a support is avoided, the construction speed is accelerated, the field pollution is reduced, and the low-carbon construction is realized.

Drawings

Fig. 1 is a schematic structural view of a cast-in-place floor beam in the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the present invention.

Fig. 4 is a schematic connection diagram of the present invention.

The parts in the figures are numbered as follows:

1 bridge deck

2 web plate

3 ground beam

4 tie beam

5 pile foundation

6 annular reinforcing steel bar

7 steel bar connector

8 holes

9 Metal corrugated pipe

10 short steel bar

11 section steel

12 cross-beam.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings to make it clear to those skilled in the art how to practice the invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.

Referring to fig. 2, the assembled floor beam with vertical connection comprises a bridge deck 1, a web 2, a ground beam 3, a tie beam 4 and a pile foundation 5. The bridge structure is characterized in that more than two webs 2 are distributed below the bridge deck 1 along the transverse bridge direction, each web 2 is connected with the lower surface of the bridge deck 1 along the upper edge, the lower edge of each web 2 is connected with a ground beam 3, tie beams 4 are connected between the midspan and two ends of every two adjacent ground beams 3, and a pile foundation 5 is connected at the junction of each ground beam 3 and each tie beam 4.

Wherein, the bridge deck slab 1 with the junction of every web 2 be equipped with the armpit, the horizontal bridge of bridge deck slab 1 is to both sides to the arm of choosing and the end section of arm is the horizontal segment is chosen to every side.

This assembled floor beam of vertical connection has cancelled crossbeam 12 and the cross slab of traditional cast-in-place floor beam, has optimized the decking structure of floor beam, has unified the outrigger pattern of boundary beam and well roof beam for the template of decking both is applicable to the boundary beam, is applicable to well roof beam again, only needs the horizontal segment length of adjustment outrigger just can realize different bridge widths, to the decking construction of boundary beam and well roof beam adopt same set of template can.

Referring to fig. 3 and 4, an assembled floor beam with double webs and vertical connection is taken as an example and is formed by connecting a bridge deck 1, two prefabricated components, a plurality of tie beams 4 and a plurality of pile foundations 5, each prefabricated component comprises a web 2 and a ground beam 3 which are prefabricated into a whole, the lower edge of the web 2 is connected with the ground beam 3, the two prefabricated components are distributed along the transverse bridge direction, the upper edge of the web 2 of each prefabricated component is connected with the bridge deck 1 through a wet joint, the tie beams 4 are connected between the midspan and two ends of the ground beam 3 of the two prefabricated components through pouring concrete, and the junction of the ground beam 3 and each tie beam 4 of each prefabricated component is connected with a pile foundation through pouring concrete.

During assembly, a wet joint is reserved between the upper edge of a web plate 2 of each prefabricated component and a bridge deck plate 1, annular reinforcing steel bars 6 are reserved on the upper edge of the web plate 2 and the lower surface of the bridge deck plate 1 and are arranged in a staggered mode, the upper edge of the web plate 2 and the bridge deck plate 1 are connected through wet joint pouring concrete, if the width of the wet joint is larger than or equal to 300mm, high-performance concrete is poured, and if the width of the wet joint is larger than or equal to 200mm, ultrahigh-performance concrete is poured; reinforcing steel bars or reinforcing steel bar connectors 7 are reserved in the midspans and at two ends of the adjacent sides of the ground beams 3 of the two prefabricated parts, the corresponding reinforcing steel bars or reinforcing steel bar connectors 7 on the ground beams 3 of the two prefabricated parts are welded and connected through short reinforcing steel bars 10, and tie beams 4 are connected between the midspans and two ends of the ground beams 3 of the two prefabricated parts through pouring common concrete on the corresponding reinforcing steel bars or reinforcing steel bar connectors 7 and the short reinforcing steel bars 10; holes 8 are formed in the junction of the bottom surface of the ground beam 3 of each prefabricated part and each tie beam 4, a metal corrugated pipe 9 is embedded in each hole 8, section steel 11 is arranged in each hole 8 of the ground beam 3 and the pile foundation 5, and high-performance concrete is poured to connect the holes.

The connection mode of the assembled floor beam with the multi-web vertical connection is the same as that of the double-web vertical connection, and the description is omitted.

It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.

Claims

1. The vertically-connected assembled floor beam is characterized by comprising bridge decks, prefabricated components, tie beams and pile foundations, wherein the prefabricated components comprise webs and the ground beams which are prefabricated into a whole, the lower edges of the webs are connected with the ground beams, more than two prefabricated components are distributed along the transverse bridge direction, the upper edges of the webs of the prefabricated components are connected with the bridge decks through wet joints, the tie beams are connected between the midspans and the two ends of the ground beams of the two prefabricated components through pouring concrete, and the junction of the ground beam of each prefabricated component and each tie beam is connected with one pile foundation through pouring concrete; the transverse bridge of the bridge deck is provided with cantilever arms on two sides, and the tail end of each cantilever arm on each side is a horizontal section.

2. The vertically connected fabricated floor beam according to claim 1, wherein a wet joint is reserved between an upper edge of the web of each prefabricated member and the bridge deck, annular reinforcing bars are reserved on the upper edge of the web and a lower surface of the bridge deck and are arranged in a staggered manner with each other, and the upper edge of the web and the bridge deck are connected by pouring concrete through the wet joint.

3. The vertically connected fabricated floor beam according to claim 2, wherein the upper edge of the web and the bridge deck are connected by pouring high performance concrete through a wet joint when the wet joint width between the upper edge of the web of the prefabricated member and the bridge deck is not less than 300 mm.

4. The vertically connected fabricated floor beam according to claim 2, wherein the upper edge of the web and the bridge deck are connected by pouring ultra high performance concrete through a wet joint when the wet joint width between the upper edge of the web of the prefabricated member and the bridge deck is not less than 200 mm.

5. The vertically connected fabricated floor beam according to claim 1, wherein reinforcing bars or reinforcing bar connectors are reserved at the midspan and at the two ends of the adjacent sides of the ground beams of the adjacent prefabricated members, the corresponding reinforcing bars or reinforcing bar connectors on the ground beams of the adjacent prefabricated members are welded and connected through short reinforcing bars, and tie beams are connected between the midspan and the two ends of the ground beams of the adjacent prefabricated members through pouring concrete on the corresponding reinforcing bars or reinforcing bar connectors and the short reinforcing bars.

6. The vertically connected fabricated floor beam as claimed in claim 1, wherein the prefabricated members have holes at the junction of the bottom surface of the floor beam and each tie beam, a metal corrugated pipe is embedded in each hole, the floor beam and the pile foundation are connected by installing section steel through the holes and pouring high-performance concrete.

7. The vertically connected fabricated floor beam of claim 1, wherein the joints of the web and the deck slab of the prefabricated member are provided with haunches.