CN213061562U

CN213061562U - Prefabricated lane board in tunnel

Info

Publication number: CN213061562U
Application number: CN202021253640.0U
Authority: CN
Inventors: 高卫平; 苏凯; 温竹茵; 孙巍; 由广明; 刘念; 张亚洲; 薛勇
Original assignee: Shanghai Huangpu River Yuejiang Facilities Investment Construction Development Co ltd; Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Huangpu River Yuejiang Facilities Investment Construction Development Co ltd; Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-04-27
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a prefabricated lane plate in a tunnel, which comprises a prefabricated lane plate and is characterized in that the prefabricated lane plate comprises a plate body, a longitudinal beam and a wing plate; the longitudinal beams are positioned on the left side and the right side of the plate body, inclined planes are arranged on the inner sides of the longitudinal beams, and the wing plates are positioned at the front end and the rear end of the plate body and are flush with the lower surface of the plate body; the novel core-pulling plate is characterized in that a non-core-pulling permanent inner die is arranged inside the plate body, concave-convex keys are arranged on the front end face and the rear end face of the plate body, annular reinforcing steel bars are arranged at the front end and the rear end of the plate body, and longitudinal ribs are reserved at the front end and the rear end of the longitudinal beam and extend out of the longitudinal. During construction, the prefabricated lane plates are conveyed to a lane plate assembling working surface in the shield tunnel, lifted to the upper side of the upright post through a crane, and after turning, direction adjustment and elevation adjustment, four points of the longitudinal beam are supported on the upright post; the reserved steel bars on the front end face and the rear end face of the plate body are arranged in a staggered mode, and after the steel bars are bound, seams between adjacent plates and nodes between the upright columns and the plates are poured. The prefabricated lane plate in the shield tunnel and the construction method thereof have the advantages of convenience in installation, firmness in connection, quickness in construction, economy and reasonability.

Description

Prefabricated lane board in tunnel

Technical Field

The utility model belongs to shield tunnel engineering field especially relates to a prefabricated lane board in tunnel.

Background

In recent years, with the rapid development of social economy and urbanization processes, the shield tunnel technology has become an indispensable key technology in infrastructure construction of important traffic and the like in China, and the prefabrication of the tunnel internal structure has also become a great trend in shield tunnel construction.

The inner space of the shield tunnel is narrow, large mechanical equipment cannot enter the shield tunnel, the size and the weight of a prefabricated lane in the shield tunnel cannot be too large, and otherwise, the normal hoisting and transportation requirements cannot be met; however, the prefabricated lane plates must meet the requirements of 2-3 lane widths and loads, must have high strength and connection reliability, and must ensure that the damage of equipment installation to the prefabricated lane plates is minimized. How to solve the problem becomes the key of prefabricating the internal structure of the tunnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prefabricated lane board in tunnel of construction convenience, connection reliability.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme: a prefabricated lane plate in a tunnel comprises a prefabricated lane plate and is characterized in that the prefabricated lane plate comprises a plate body, longitudinal beams and wing plates; the longitudinal beams are positioned on the left side and the right side of the plate body, inclined planes are arranged on the inner sides of the longitudinal beams, and the wing plates are positioned at the front end and the rear end of the plate body and are flush with the lower surface of the plate body; the novel core-pulling plate is characterized in that a non-core-pulling permanent inner die is arranged inside the plate body, concave-convex keys are arranged on the front end face and the rear end face of the plate body, annular reinforcing steel bars are arranged at the front end and the rear end of the plate body, and longitudinal ribs are reserved at the front end and the rear end of the longitudinal beam and extend out of the longitudinal.

Furthermore, a rough surface and an embedded hanging piece are arranged on the upper surface of the plate body, and an equipment mounting nut and a reserved groove are reserved on the lower surface of the plate body.

Furthermore, the inclined plane and the vertical plane are inclined by 3-5 degrees, so that the demolding of the lane plate is facilitated, and the occupied clearance below the lane plate is reduced.

Further, the non-core-pulling permanent internal mold is cylindrical, has an internal cavity, and is provided with sealing covers at two ends to prevent concrete from entering; the non-core-pulling permanent inner mold is made of PVC, and the thickness and the strength of the non-core-pulling permanent inner mold need to bear the self weight and the construction load of a concrete structure; the non-core-pulling permanent internal mold is arranged to reduce the dead weight of the roadway plate and adapt to the limitation of the hoisting weight in the shield.

Further, the size of the front end and the rear end of the prefabricated lane plate is 3.5-4.5 m, the size of the left side and the right side of the prefabricated lane plate is 10-12 m, and the requirement of 2-3 lane widths is met.

Furthermore, a plurality of prefabricated lane boards are spliced together, ring-shaped reinforcing steel bars are reserved on the end faces of the board bodies of the adjacent prefabricated lane boards, the longitudinal beams are reserved on the end faces of the board bodies of the adjacent prefabricated lane boards, the extending reinforcing steel bars are arranged in a staggered mode, the corresponding reinforcing steel bars are mutually bound and welded, the adjacent prefabricated lane boards are connected through wet joints, and the concrete leveling layer is paved on the top surfaces of the lane boards.

Compared with the prior art, the utility model have simple to operate, nimble adjustable, firm in connection, the advantage of economic reasonable has important using value.

Drawings

Fig. 1 is a top view (top view) of the prefabricated lane plate of the present invention.

Fig. 2 is a bottom view (bottom view) of the prefabricated lane plate of the present invention.

Fig. 3 is a front view of the prefabricated lane plate of the present invention.

Fig. 4 is a side view of the prefabricated lane plate of the present invention.

In the figure: 1-a board body; 2-longitudinal beams; 3-wing plate; 4-embedding hanging pieces; 5, installing a nut on the equipment; 6-reserving a groove; 7-a hollow inner mold; 8-end face concave-convex key; 9-inclined plane; 10-ring-shaped steel bars; 11-reserving the extending steel bars.

Detailed Description

The invention is further described below with reference to the accompanying drawings and examples:

as shown in fig. 1 to 4, the prefabricated roadway plate in the tunnel is of a stool type and mainly comprises a plate body 1, longitudinal beams 2, wing plates 3 and the like. The upper surface of the plate body 1 is provided with a rough surface and a pre-buried hanging piece 4, the lower surface is provided with a device mounting nut 5 and a groove 6 in advance, a permanent inner die 7 is arranged in the device mounting nut, and concave-convex keys 8 are arranged on the front end surface and the rear end surface of the device mounting nut. The longitudinal beams 2 are positioned at the left side and the right side of the plate body 1, and inclined surfaces 9 are arranged on the inner sides of the longitudinal beams 2. The wing plates 3 are positioned at the front end and the rear end of the plate body 1 and are flush with the lower surface of the plate body 1.

Furthermore, the front end and the rear end of the lane plate are provided with annular steel bars 10, and the front end and the rear end of the longitudinal beam are reserved with extending longitudinal bars 11.

Further, the inclined plane is 3-5 degrees, so that the demolding of the lane board is facilitated, and the occupied clearance below the lane board is reduced.

A construction method of a prefabricated lane plate in a tunnel is characterized by comprising the following steps:

a. hoisting and lowering the prefabricated roadway plate well into the well by utilizing the pre-embedded hoisting piece 4 at the top of the prefabricated roadway plate, and longitudinally transporting the prefabricated roadway plate to a roadway plate assembling working surface in the shield tunnel along the tunnel in the long-side direction;

b. hoisting the prefabricated roadway plate to the upper part of the upright post by using a roadway plate assembling working face crane, and rotating the prefabricated roadway plate by 90 degrees above the upright post so that the direction of the short edge of the prefabricated roadway plate is along the longitudinal direction of the tunnel;

c. finely adjusting the direction and the elevation of the prefabricated roadway plate, and placing four corner points at the end part of a longitudinal beam of the prefabricated roadway plate on the top surface of the upright post;

d. the reserved steel bars 10 of the end surfaces of the adjacent prefabricated lane boards and the reserved steel bars 11 of the longitudinal beams 2 are arranged in a staggered mode, steel bars are bound and welded, joints between adjacent plates and nodes between the vertical columns and the plates are poured by using the wing plates 3 of the end surfaces of the prefabricated lane boards as bottom moulds, and the concave-convex keys 8 of the end surfaces of the prefabricated lane boards ensure that cast-in-place concrete at the nodes are firmly connected with prefabricated parts;

e. after all or part of the lane plates are installed, paving a concrete leveling layer on the top surface of the lane plates, and ensuring that the connection between the cast-in-place concrete paving layer and the prefabricated lane plate surface is reliable by utilizing the rough surface on the upper surface of the plate body 1;

f. the prefabricated lane plate lower surface reserved equipment mounting nut 5 and the reserved groove 6 are used for mounting equipment and hanging a pipeline, so that the lane plate is prevented from being damaged during equipment mounting.

While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims

1. A prefabricated lane plate in a tunnel comprises a prefabricated lane plate and is characterized in that the prefabricated lane plate comprises a plate body, longitudinal beams and wing plates; the longitudinal beams are positioned on the left side and the right side of the plate body, inclined planes are arranged on the inner sides of the longitudinal beams, and the wing plates are positioned at the front end and the rear end of the plate body and are flush with the lower surface of the plate body; the novel core-pulling plate is characterized in that a non-core-pulling permanent inner die is arranged inside the plate body, concave-convex keys are arranged on the front end face and the rear end face of the plate body, annular reinforcing steel bars are arranged at the front end and the rear end of the plate body, and longitudinal ribs are reserved at the front end and the rear end of the longitudinal beam and extend out of the longitudinal.

2. The precast roadway plate in the tunnel according to claim 1, wherein a rough surface and embedded hanging pieces are arranged on the upper surface of the plate body, and equipment mounting nuts and reserved grooves are reserved on the lower surface of the plate body.

3. The precast railroad plate for use in a tunnel according to claim 1, wherein the inclination angle of the inclined surface to the vertical plane is 3 ° to 5 °.

4. The precast roadway slab in a tunnel according to claim 1, wherein the non-core-pulling permanent inner mold is cylindrical, has an inner cavity, and is provided with two ends with covers to prevent concrete from entering.

5. The prefabricated roadway plate in a tunnel according to claim 1, wherein the size of the front end and the rear end of the prefabricated roadway plate is 3.5-4.5 m, and the size of the left side and the right side of the prefabricated roadway plate is 10-12 m.

6. The precast roadway panel in a tunnel according to claim 1, wherein: a plurality of prefabricated lane boards are spliced mutually, and annular reinforcing steel bars are reserved on the end faces of the board bodies of adjacent prefabricated lane boards, and longitudinal beams are reserved and extend out of reinforcing steel bars in a staggered arrangement mode, and the corresponding reinforcing steel bars are bound and welded mutually, and the adjacent prefabricated lane boards are connected through wet joints, so that the concrete leveling layer is paved on the top surface of the lane board.