CN218522133U

CN218522133U - Semi-assembled structure of rail top air duct of underground station

Info

Publication number: CN218522133U
Application number: CN202222208073.2U
Authority: CN
Inventors: 洪冬明; 邓智文; 岑伯杨; 梁军; 陈俊生; 廖拥君
Original assignee: Guangdong Construction Engineering Group Co Ltd
Current assignee: Guangdong Construction Engineering Group Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-02-24
Anticipated expiration: 2032-08-22

Abstract

The utility model relates to a semi-fabricated structure of a rail top air channel of an underground station, which comprises a side wall plate, a hanging wall plate and a bottom plate, wherein the inner side of the side wall plate is provided with a transverse rectangular groove, the upper part of the rectangular groove is exposed with side wall plate reinforcing steel bars, the inner side of the lower part of the hanging wall plate is provided with a hanging wall plate connecting step, and the hanging wall plate connecting step exposes the hanging wall plate reinforcing steel bars; the bottom plate is a prefabricated concrete plate, the bottom plate comprises an inner reinforcing steel bar layer and a concrete layer, the reinforced concrete of the middle upper and lower structural layers is a prefabricated integral finished surface, the upper half parts of the left and right ends of the bottom plate are respectively preset with a bottom plate left connecting step and a bottom plate right connecting step, the lower half parts of the two ends of the bottom plate are preset with two bolt connecting slotted holes, and the wall hanging plate is pre-embedded with bolts and is provided with nuts corresponding to the two bolt connecting slotted holes; exposed steel bars are reserved in the prefabricated plate preset rectangular groove position, the preset steps and the connecting position, the steel bars are staggered during connection, the connecting position forms a steel skeleton pouring cavity, and a high-strength connecting body is formed after concrete is poured, so that the connecting strength is improved, the connection is safe, the installation is quick, the production cost is reduced, and the construction efficiency is improved.

Description

Semi-assembled structure of rail top air duct of underground station

Technical Field

The utility model relates to a station building technical field, more specifically say, relate to a station rail top wind channel semi-fabricated structure underground.

Background

In recent years, with the rapid development of cities, the construction of rail transit is further accelerated, and large cities are willing to construct more subways, urban rails and the like for further expansion, but underground stations with large investment are mainly adopted for not influencing the appearance of cities in cities. In the structure construction process of an underground station, the construction of an air duct bottom plate, a hanging wall plate and a middle plate is an important component, and at present, the construction method mainly comprises a hanging wall cast-in-place bottom plate prefabricating scheme, a hanging type air duct scheme, a full-assembly type steel structure air duct scheme and a full-assembly type prefabricated concrete plate air duct scheme. The suspended air pipe has limited service life and high maintenance cost; the fully-assembled steel structure air duct has high corrosion resistance requirement, large engineering quantity, low fireproof performance and high maintenance cost; the vertical atress node of prefabricated concrete slab wind channel of full assembled requires highly, and the process is many and miscellaneous, and the installation accuracy requires highly, and installation space also is to some extent restricted. Relatively speaking, the prefabricated scheme of the wall-hung cast-in-place bottom plate is reasonable, the popularization is high, and the whole structure is close to a complete cast-in-place structure. The concrete bracket is reserved to the lower string of wall bottom of more adoption in the market and through expansion bolts fixed + cement mortar joint filling connection, can bring the wholeness not high like this, and it is higher to bring the uncertainty for later stage fortune dimension, also increases the reinforced concrete material cost of string wall bottom and bracket simultaneously, can not fully embody the green's of assembled characteristics.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems and the defects, the semi-assembled structure of the rail top air channel of the underground station, which has safe and reliable connection, quick installation, environmental protection and reduced production cost, is provided.

The technical scheme of the utility model is realized like this: a semi-fabricated structure of a rail top air duct of a subway station comprises a side wall plate, a hanging wall plate and a bottom plate, wherein a transverse rectangular groove is formed in the inner side of the side wall plate, reinforcing steel bars of the side wall plate are exposed at the upper half part of the rectangular groove, a hanging wall plate connecting step is formed in the inner side of the lower part of the hanging wall plate, and the hanging wall plate connecting step is exposed out of the reinforcing steel bars of the hanging wall plate;

the bottom plate is a prefabricated concrete plate, the bottom plate comprises an inner reinforcing steel layer and a concrete layer, the reinforced concrete of the middle upper and lower structural layers is a prefabricated integral finished surface, the upper half parts of the left and right ends of the bottom plate are respectively preset with a bottom plate left connecting step and a bottom plate right connecting step, and the horizontal length dimension of the bottom plate left connecting step is larger than the thickness dimension of the wall hanging plate; the horizontal length dimension of the right connecting step of the bottom plate is larger than the depth dimension of the rectangular groove position of the side wall plate, the left connecting reinforcing steel bar and the right connecting reinforcing steel bar are respectively exposed at the inner sides of the left connecting step of the bottom plate and the right connecting step of the bottom plate, the lower structural layer is a prefabricated reinforced concrete surface, and the upper structural layer is reserved with reinforcing steel bars but is not poured with concrete and used for connection during bottom plate construction; two bolt connecting slotted holes are preset in the lower half parts of the two ends of the bottom plate, bolts are pre-embedded in the hanging wall plate corresponding to the two bolt connecting slotted holes, and nuts are matched with the hanging wall plate;

the left side of the bottom plate is connected with the exposed hanging wallboard reinforcing steel bars of the hanging wallboard connecting step at the lower inner side of the hanging wallboard through the left connecting reinforcing steel bars at the upper half part in a staggered manner and then connected through poured concrete;

the right side of the bottom plate is connected with the side wall plate reinforcing steel bars exposed out of the upper half part of the rectangular groove of the side wall plate through the right connecting reinforcing steel bars of the upper half part in a staggered mode through poured concrete.

Furthermore, the left connecting steel bars and the wall hanging plate steel bars are vertical to and staggered with each other in the extension direction; the right connecting reinforcing steel bars are perpendicular to the extending direction of the reinforcing steel bars of the side wall plate and staggered with the extending direction of the reinforcing steel bars of the side wall plate.

And the hanging wall and the middle plate are cast in situ simultaneously, rectangular hole sites for connecting the bottom plates are reserved during construction of the hanging wall and the side walls respectively, and reinforcing steel bars are reserved. The bottom plate is a prefabricated concrete plate, the reinforced concrete of the upper and lower structural layers in the middle of the bottom plate is a prefabricated integral finished surface, the lower structural layers at two ends are prefabricated finished reinforced concrete surfaces, and the upper structural layer is reserved with reinforced bars but concrete is not poured. When the wall hanging and the side wall are connected with the prefabricated bottom plate, firstly, the prefabricated bottom plate is lifted and finely adjusted to the installation position by adopting the rail type sliding tool lift truck, then, reserved steel bars on the upper structural layers at the two ends of the bottom plate are respectively connected with the steel bars in reserved rectangular hole positions of the wall hanging and the side wall in a clamping manner, then, the lower structural layer of the bottom plate is fixed with the wall hanging through a screw rod and a nut, and finally, high-grade cement paste is injected into a grouting hole in the rectangular connection hole position and the rail type sliding tool lift truck is slid to the next operation unit.

The utility model has the advantages that:

exposed reinforcing steel bars are reserved in the prefabricated plate preset rectangular groove position, the preset step and the connecting position, the reinforcing steel bars are staggered during connection, the connecting position forms a steel skeleton filling cavity, a high-strength connecting body is formed after concrete is filled, the connecting strength is improved, the connection is safe and reliable, the installation is quick, the production cost is effectively reduced, the construction efficiency is improved, and the construction period is shortened.

Drawings

FIG. 1 is a schematic view of the connection structure of the side wall plate, the hanging wall plate and the bottom plate of the present invention;

fig. 2 is a schematic top view of the bottom plate of the present invention;

FIG. 3 is a schematic side view of the bottom plate of the present invention;

Detailed Description

The first embodiment is as follows: referring to fig. 1-3, the utility model provides a semi-fabricated structure of an underground station rail top air duct, which comprises a side wall plate 1, a hanging wall plate 2 and a bottom plate 3, wherein a transverse rectangular groove 11 is arranged at the inner side of the side wall plate 1, a side wall plate reinforcing steel bar 12 is exposed at the upper half part of the rectangular groove 11, a hanging wall plate connecting step 21 is arranged at the inner side of the lower part of the hanging wall plate 2, and the hanging wall plate connecting step 21 exposes a hanging wall plate reinforcing steel bar 22; the bottom plate 3 is a prefabricated concrete plate, the bottom plate 3 comprises an internal reinforcing steel layer and a concrete layer, the reinforced concrete of an upper structural layer and a lower structural layer in the middle of the bottom plate 3 is a prefabricated integral finished surface, the upper half parts of the left end and the right end of the bottom plate 3 are respectively preset with a bottom plate left connecting step 31 and a bottom plate right connecting step 32, and the horizontal length dimension of the bottom plate left connecting step 31 is larger than the thickness dimension of the wall hanging plate 2; the horizontal length dimension of the bottom plate right connecting step 32 is larger than the depth dimension of the rectangular groove position 11 of the side wall plate 1, the inner sides of the bottom plate left connecting step 31 and the bottom plate right connecting step 32 are respectively exposed out of a left connecting reinforcing steel bar 33 and a right connecting reinforcing steel bar 34, the lower half parts of the two ends of the bottom plate 3 are pre-provided with two bolt connecting slotted holes 35, and bolts 4 are pre-embedded in the wall hanging plate 2 corresponding to the two bolt connecting slotted holes 35 and are matched with nuts; the left side of the bottom plate 3 is vertically staggered with the hanging wall plate steel bars 22 exposed out of the hanging wall plate connecting steps 21 at the lower part of the hanging wall plate 2 through the left connecting steel bars 33 at the upper half part and then is connected through pouring concrete; the right side of the bottom plate 3 is vertically staggered with the side wall plate reinforcing steel bars 12 exposed out of the upper half part of the rectangular groove 11 of the side wall plate 1 through the right connecting reinforcing steel bars 34 of the upper half part and then connected through poured concrete.

The working principle of the utility model is realized as follows: hang wallboard 2 and bottom plate 3 cast-in-place simultaneously, reserve the rectangle trench 11 that is used for bottom plate 3 to connect respectively when hanging wallboard 2 and the construction of side wall board 1 to reserve side wall board reinforcing bar 12 in the first half of rectangle trench 11. The bottom plate 3 is a prefabricated concrete plate, the reinforced concrete of the upper and lower structural layers in the middle of the bottom plate 3 is a prefabricated integral finished surface, the lower structural layers at the two ends of the bottom plate 3 are prefabricated reinforced concrete surfaces, and the left connecting steel bar 33 and the right connecting steel bar 34 are reserved on the upper structural layer but the concrete is not poured. When hanging wall panel 2 and side wall panel 2 and prefabricated bottom plate 3 are connected, at first adopt rail mounted sliding tool lift truck to promote prefabricated bottom plate 3 and finely tune to mounted position, then crisscross and form the right side with the right connecting reinforcement 34 that bottom plate 3 both ends upper structure layer was reserved and the side wall panel reinforcing bar 12 in the rectangle trench 11 that hanging wall panel 2 and side wall panel 1 were reserved and pour the spread groove, left connecting reinforcement 33 is crisscross and form the left side with hanging wall panel reinforcing bar 22 and pour the spread groove, it is fixed with hanging wall panel 2 through bolt 4 and nut with bottom plate 3 lower structure layer after that, pour the high grade grout and pour the slip of rail mounted sliding tool lift truck to next operation unit into to the grout in the notes hole of spread groove and the left side of pouring the spread groove at last.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a semi-assembled structure of subway station rail top wind channel, includes side wall board (1), hangs wallboard (2) and bottom plate (3), its characterized in that: a transverse rectangular groove (11) is formed in the inner side of the side wall plate (1), side wall plate steel bars (12) are exposed at the upper half part of the rectangular groove (11), a wall plate connecting step (21) is formed in the inner side of the lower part of the wall hanging plate (2), and the wall hanging plate steel bars (22) are exposed out of the wall hanging plate connecting step (21);

the bottom plate (3) is a prefabricated concrete plate, the bottom plate (3) comprises an internal reinforcing steel layer and a concrete layer, the reinforced concrete of an upper structural layer and a lower structural layer in the middle of the bottom plate (3) is a prefabricated integral finished surface, a bottom plate left connecting step (31) and a bottom plate right connecting step (32) are respectively preset on the upper half parts of the left end and the right end of the bottom plate (3), and the horizontal length dimension of the bottom plate left connecting step (31) is larger than the thickness dimension of the wall hanging plate (2); the horizontal length of the right connecting step (32) of the bottom plate is larger than the depth of the rectangular groove (11) of the side wall plate (1), the inner sides of the left connecting step (31) of the bottom plate and the right connecting step (32) of the bottom plate are respectively exposed out of a left connecting steel bar (33) and a right connecting steel bar (34), two bolt connecting slotted holes (35) are preset in the lower half parts of two ends of the bottom plate (3), bolts (4) are pre-embedded in the wall hanging plate (2) corresponding to the two bolt connecting slotted holes (35), and nuts are matched with the bolt connecting slotted holes;

the left side of the bottom plate (3) is connected with the exposed wall hanging plate reinforcing steel bars (22) of the inner wall hanging plate connecting step (21) at the lower part of the wall hanging plate (2) through the left connecting reinforcing steel bars (33) at the upper half part in a staggered manner and then through poured concrete;

the right side of the bottom plate (3) is connected with the exposed side wall plate reinforcing steel bars (12) of the upper half part of the rectangular groove (11) of the side wall plate (1) through the poured concrete in a staggered mode through the right connecting reinforcing steel bars (34) of the upper half part.

2. The semi-fabricated structure of the rail top duct of the underground station according to claim 1, characterized in that: the left connecting steel bar (33) is vertical to and staggered with the extension direction of the wall hanging plate steel bar (22); the right connecting steel bars (34) are perpendicular to and staggered with the extending direction of the side wall plate steel bars (12).