CN105714681B - Implementation method of suspension type monorail traffic rigid frame system - Google Patents

Abstract

The patent relates to a realization method of a suspension type monorail transit rigid frame system, which is applied to a suspension type monorail transit concrete structure system. Transporting the prefabricated concrete track beam in the rigid frame system I to an erection site, hanging the concrete track beam below a concrete cover beam through a guy cable, pouring a midspan wet joint, tensioning a second-stage prestressed tendon after the midspan wet joint reaches a design age, and pouring a side span wet joint; thus, the manufacturing of the rigid frame system of the one-linkage suspension type monorail traffic is completed. The problems that the track beam of the suspended type monorail traffic system is small in span, poor in smoothness, unfavorable in shock resistance, easy to generate large deformation and the like are solved.

Description

Implementation method of suspension type monorail traffic rigid frame system

Technical Field

The invention relates to a realization method of a suspended type monorail transit rigid frame system, which is applied to a suspended type monorail transit concrete structure system, in particular to a structure system in which a suspended type monorail transit track beam and a pier capping beam are rigid frames, so that the span of the track beam is improved, and the train smoothness and passenger comfort are improved.

Background

The german Eugen Langen in 1893 invented suspended monorail traffic, and built 13.3km of suspended monorail in the city of the well-known suspended car, the german luer area Wu Pada city (wuppertaler), in 1898-1901, which was the earliest in the world and also the longest in history. Since then, suspended monorail railways of a certain mileage have been successively built by Duttmond, dulcet, qianlike city of Japan, kanesin county, etc. At present, a formally operated suspended type monorail transit line does not exist in China, and the Chongqing straddle type monorail transit line is a few monorail transit lines in China.

The existing civil structures such as the track beam and the bridge pier in the suspension type monorail traffic system are mostly in the form of steel structures, namely, steel box beams are adopted as the track beam, and the track beam is suspended in the air through steel upright posts. The steel track beam is simply supported on the corresponding two metal supports on the steel bridge pier bent cap through two metal support legs arranged outside the steel box beam, so that a steel box beam simple support stress system is formed. The stress system has the advantages that the stress buckling phenomenon is easy to occur due to the small thickness of the steel plate of the steel box beam, so that the load of a vehicle borne by the stress system is small, the span of the track beam is small, the smoothness is poor, the shock resistance is unfavorable, the track beam is easy to generate larger deformation, and the linear control of the track beam is not facilitated; the metal structure is also prone to corrosion, affecting its durability.

Disclosure of Invention

The technical problems to be solved by the invention are as follows:

the realization method of the suspended type monorail transit rigid frame system is provided, so that the problems of small track beam span, poor smoothness, unfavorable shock resistance, easy generation of large deformation of the track beam and the like of the conventional suspended type monorail transit system are solved.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a realization method of suspension type monorail transit rigid frame system, includes that concrete track roof beam, side span wet seam midspan wet seam, concrete bent cap, walking face seam board, guide face seam board, vertical adjusting device, expansion joint, second stage prestressing tendons, cable, mound, screw jack, characterized by: transporting the prefabricated concrete track beam in the rigid frame system I to an erection site, hanging the concrete track beam below a concrete cover beam through a guy cable, pouring a midspan wet joint, tensioning a second-stage prestressed tendon after the midspan wet joint reaches a design age, and pouring a side span wet joint; thus, the manufacturing of the rigid frame system of the one-linkage suspension type monorail traffic is completed;

the specific construction process comprises the following steps:

step 1, prefabricating a concrete track beam used by a rigid frame system in a factory and transporting the concrete track beam to an erection site;

2, pouring piers, arranging a vertical adjusting device at a design position of the bottom surface of the concrete cover beam, and spatially positioning the prefabricated concrete track beam through a screw jack; then hanging the concrete track beam below the concrete cover beam through a inhaul cable;

step 3, pouring a midspan wet joint on the pier; stretching the second-stage prestressed tendons after the middle-span wet joint reaches the design age, and then pouring the side-span wet joint;

step 4, after the edge-span wet joint reaches the design age, dismantling a screw jack to finish system conversion; thus, a rigid frame system of the one-piece suspended monorail traffic is formed.

The beneficial effects of the invention are as follows:

the realization method and construction process of the suspended type monorail transit rigid frame system solve the problems that the suspended type monorail transit system is small in track beam span, poor in smoothness, unfavorable in shock resistance, easy to generate large deformation and the like.

Drawings

FIG. 1 is a schematic illustration of a joined rigid frame system without a wet joint cast.

FIG. 2 is a schematic illustration of a one-joint rigid frame system with mid-span wet joint 2-2 cast.

FIG. 3 is a schematic representation of a cross-wet seam 2-2.

FIG. 4 is a schematic representation of the side cross-wet seam 2-1.

FIG. 5 is a schematic diagram of the first rigid frame system after the system conversion is completed.

Fig. 6 is a schematic view of a concrete track beam 1-1 suspension.

Fig. 7 is a schematic view of a concrete track beam 1-2 suspension.

In the figure: 1-1, a concrete track beam; 1-2-concrete track beams; 2-1-side across wet seams; 2-midspan wet joint; 3-1, a concrete capping beam; 3-2-concrete capping beam; 4-1-running surface seaming panel; 4-2-guiding surface seaming panel; 5-1, a vertical adjusting device; 5-2, a vertical adjusting device; 6, an expansion joint; 7-second-stage prestressed tendons; 8-1-inhaul cable; 8-2-inhaul cable; 9-1-piers; 9-2-piers; 10-1-a screw jack; 10-2-screw jack.

Detailed Description

The invention is further illustrated by way of example.

Implementation method of example suspension type monorail traffic rigid frame system

In the realization process of a rigid frame system of a suspended monorail traffic concrete structure, a concrete track beam 1-1, a concrete track beam 1-2, a side span wet joint 2-1, a middle span wet joint 2-2, a concrete cover beam 3-1, a concrete cover beam 3-2, a walking surface joint plate 4-1, a guiding surface joint plate 4-2, a vertical adjusting device 5-1, a vertical adjusting device 5-2, a secondary prestressed rib 7, a stay cable 8-1, a stay cable 8-2, a pier 9-1, a pier 9-2, a screw jack 10-1 and a screw jack 10-2 are used.

Step 1, prefabricating a concrete track beam 1-1 and a concrete track beam 1-2 used by a rigid frame system in a factory, and transporting the concrete track beam 1-1 and the concrete track beam to an erection site.

2, pouring piers 9-1 and 9-2, arranging a vertical adjusting device 5-1 at a design position of the bottom surface of the concrete cap beam 3-1, and spatially positioning the prefabricated concrete track beam 1-1 through a screw jack 10-1; the concrete track girder 1-1 is then suspended below the concrete cap girder 3-1 by means of the stay cables 8-1, as shown in fig. 1 and 6.

Step 3, arranging a vertical adjusting device 5-2 at a design position of the bottom surface of the concrete cover beam 3-2, and spatially positioning the prefabricated concrete track beam 1-2 through a screw jack 10-2; the concrete track beam 1-2 is then suspended below the concrete cap beam 3-2 by the guy wires 8-2, as shown in fig. 7.

Step 4 casting the mid-span wet joint 2-2 over pier 9-2 as shown in fig. 2 and 3; after the mid-span wet joint 2-2 reaches the design age, the secondary prestressed tendons 7 are tensioned, and the side-span wet joint 2-1 is poured, as shown in fig. 4.

And 5, after the side span wet joint 2-1 reaches the design age, dismantling the screw jack 10-1 and the screw jack 10-2 to finish system conversion, as shown in fig. 5. Thus, a rigid frame system of the one-piece suspended monorail traffic is formed.

The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation and variation of the above embodiment according to the technical matter of the present invention still fall within the scope of the technical solution of the present invention. The invention has novelty and practicability, meets the requirements of the invention patent, and accordingly, the invention patent application is put forward by law.

Claims (1)

1. The utility model provides a realization method of suspension type monorail transit rigid frame system, includes that concrete track roof beam, side span wet seam midspan wet seam, concrete bent cap, walking face seam board, guide face seam board, vertical adjusting device, expansion joint, second stage prestressing tendons, cable, mound, screw jack, characterized by: transporting the prefabricated concrete track beam in the rigid frame system I to an erection site, hanging the concrete track beam below a concrete cover beam through a guy cable, pouring a midspan wet joint, tensioning a second-stage prestressed tendon after the midspan wet joint reaches a design age, and pouring a side span wet joint; thus, the manufacturing of the rigid frame system of the one-linkage suspension type monorail traffic is completed;

the specific construction process comprises the following steps:

step 1, prefabricating a concrete track beam used by a rigid frame system in a factory and transporting the concrete track beam to an erection site;

2, pouring piers, arranging a vertical adjusting device at a design position of the bottom surface of the concrete cover beam, and spatially positioning the prefabricated concrete track beam through a screw jack; then hanging the concrete track beam below the concrete cover beam through a inhaul cable;

step 3, pouring a midspan wet joint on the pier; stretching the second-stage prestressed tendons after the middle-span wet joint reaches the design age, and then pouring the side-span wet joint;

step 4, after the edge-span wet joint reaches the design age, dismantling a screw jack to finish system conversion; thus, a rigid frame system of the one-piece suspended monorail traffic is formed.