CN107401125B - Traveling device of mobile trolley and using method - Google Patents

Abstract

The invention discloses a traveling device of a mobile trolley and a using method thereof, the traveling device comprises a main truss, a hanging basket lifting part, a traveling part, a template part and an anchoring part, wherein the main truss realizes the fixation of a mobile hanging basket, the main truss is connected with the top of the hanging basket lifting part, the bottom of the hanging basket lifting part is connected with the template part, the traveling of the mobile hanging basket is realized through the traveling part, and the traveling part is fixed on the anchoring part. The template part of the traveling device of the mobile trolley does not comprise a top plate template and a flange plate template, so that the self weight of the mobile hanging basket is reduced, and the working stability and safety are improved; a temporary supporting cross beam is arranged between the left corrugated steel web plate and the right corrugated steel web plate to ensure that the corrugated steel web plates have enough transverse rigidity and longitudinal rigidity; the setting of anticollision barrier guarantees the security of hanging the basket use. This remove string basket has overcome SCC self-supporting construction method and has removed the limitation of hanging the basket, can be applicable to arbitrary wave form steel web prestressed bridge, has increased the practicality, has enlarged application scope.

Description

A walking device and method of use of a mobile trolley

technical field

The invention relates to a bridge construction device, in particular to a traveling device and a using method of a mobile trolley.

Background technique

Prestressed concrete bridges with corrugated steel webs have a series of advantages such as good seismic performance, simple construction, and good economy. With the development of theory and practical applications, prestressed concrete box girder bridges with corrugated steel webs are more and more popular among bridge engineers. s concern. Corrugated steel web PC box girder bridges can adopt various construction methods similar to PC bridges depending on the bridge type, such as support cast-in-place construction, mobile formwork cast-in-place hole by hole, prefabricated installation, cantilever pouring, jacking construction, etc. For PC box girder bridges with corrugated steel webs with large spans or environments where the vertical support under the bridge is difficult, the cantilever construction method is usually used for construction.

In order to overcome the shortcomings of the traditional cantilever construction method such as cumbersome assembly of hanging baskets, insufficient stability, and long construction period, the SCC self-supporting construction method came into being. The construction method uses corrugated steel webs as the load-bearing structure of the hanging basket, which greatly reduces the dead weight of the hanging basket, improves stability, and shortens the construction period. However, the biggest limitation of this construction method is that it is only applicable to the case where the corrugated steel web connectors use double-hole connectors. When other connectors are used for the corrugated steel web, this construction method cannot be used.

In view of the limitations of the above-mentioned SCC self-supporting method, it is of great practical significance to provide a traveling device for a mobile trolley that simplifies the construction steps and has a wide application range.

Contents of the invention

The main purpose of the present invention is to overcome the defects of the existing hanging baskets, and provide a traveling device and using method of the mobile trolley, which reduces weight and improves stability, so that it is more suitable for practical use and has industrial application. value.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the walking device of the mobile trolley proposed by the present invention, it is composed of a main truss, a hanging basket lifting part, a walking part, a template part and an anchoring part,

The main truss realizes the fixing of the mobile hanging basket. The main truss is connected to the top of the lifting part of the hanging basket. The part is fixed on the anchor part.

In the aforementioned traveling device of the mobile trolley, the main truss is composed of upper beams, longitudinal beams and legs of the hanging basket;

The longitudinal beam is arranged under the upper beam, and the longitudinal beam and the upper beam are vertically arranged and fixed;

The longitudinal beam is fixedly connected with the legs of the hanging basket.

In the aforementioned traveling device of the mobile trolley, the lifting part of the hanging basket is a suspension rod, and there are multiple suspension rods, and the bottom of the suspension rod is connected to the template part, and the connection between the suspension rod and the template part Jacks of the same and/or different specifications are set at the positions.

In the aforementioned traveling device of the mobile trolley, the anchoring part is a backing plate, and the backing plate is anchored on the flange steel plate on the corrugated steel web.

In the aforementioned running device of the mobile trolley, the running part is composed of rails, and the rails are anchored on the backing plate.

In the aforementioned traveling device of the mobile trolley, the backing plate is a Π-shaped backing plate.

In the aforementioned traveling device of the mobile trolley, the track is an I-shaped steel beam.

In the aforementioned traveling device of the mobile trolley, the formwork part is arranged under the corrugated steel web, and includes a bottom formwork and side forms arranged on both sides of the bottom formwork.

The aforementioned traveling device of the mobile trolley also includes a working platform, the bottom of the working platform is connected to the lower end of the lifting part of the hanging basket, and is arranged on both sides of the template part, and the outer sides of the working platform are respectively Equipped with crash barriers.

In the traveling device of the aforementioned mobile trolley, the corrugated steel web includes a left corrugated steel web and a right corrugated steel web, and a temporary support beam is arranged between the left corrugated steel web and the right corrugated steel web.

The method for using the running device of the aforementioned mobile trolley comprises the following steps,

1) Carry out the construction of the bridge pier and No. 0 block. After the construction of the No. 0 block and (N-0) section corrugated steel web is completed, hoist the (N-1) section corrugated steel web, and the corrugated steel web section and The segments are connected together by high-strength bolts. Horizontal supports (10) are provided between the corrugated steel webs (9) on both sides;

2) Anchor the Π-shaped backing plate (7) on the flange steel plate (5) on the corrugated steel web (N-1), anchor the I-shaped track (6) on the backing plate (7), and install the hanging basket on the track (6), arrange the bottom formwork (12) and side formwork (11), fix the steel bars in the (N-1) section corrugated steel web bottom plate and the corrugated steel web shear connectors together, pour (N- 1) Segment floor concrete and maintenance;

3) Install (N-2) segmental corrugated steel web while making (N-1) segmental concrete floor;

4) After the concrete of the corrugated steel web bottom slab of the (N-1) segment reaches the design strength requirements, the bottom formwork (12) is removed, and the flange steel plate (5) on the corrugated steel web of the (N-2) segment is anchored Π-shaped backing plate (7) and I-shaped track (6), after the hanging basket moves forward, remove the Π-shaped backing plate (7) and I-shaped track (6), simultaneous construction of (N-1) segmental corrugated steel web concrete top slab and (N-2) segmental corrugated steel web concrete bottom slab;

5) After the (N-1) section corrugated steel web top slab concrete and (N-2) section (N-2) section corrugated steel web bottom slab concrete meet the design strength requirements, remove the (N-1) section corrugated steel web top slab and (N-2) Segmental corrugated steel web bottom slab formwork, remove (N-1) segmental corrugated steel web lateral support and (N-2) segmental corrugated steel web lateral support, respectively tension (N-1 ) Segmental corrugated steel web top plate prestressed reinforcement and (N-2) segmental corrugated steel web bottom plate prestressed reinforcement, grouting; at the same time install (N-3) segmental corrugated steel web;

6) The hanging basket moves forward, and the construction is repeated in the above sequence until it is completed.

By means of the above-mentioned technical solution, the traveling device and the use method of the mobile trolley of the present invention have at least the following advantages:

The traveling device and using method of the mobile trolley proposed by the present invention are composed of a main truss, a hanging basket lifting part, a walking part, a formwork part and an anchoring part. Its own weight provides working stability and safety; a temporary support beam is set between the left corrugated steel web and the right corrugated steel web to ensure that the corrugated steel web has sufficient transverse and longitudinal rigidity; anti-collision guardrail The settings ensure the safety of the hanging basket during use. The mobile hanging basket overcomes the limitation of the mobile hanging basket of the SCC self-supporting construction method, and can be applied to prestressed bridges with arbitrary corrugated steel webs, which increases practicability and expands the scope of application.

The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention will be described in detail below.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of the walking device of mobile trolley of the present invention;

Fig. 2 is the left side view of the traveling device of mobile trolley of the present invention;

Meanings of marks in the figure: 1. Upper beam, 2. Suspension rod, 3. Longitudinal beam, 4. Hanging basket leg, 5. Flange steel plate on corrugated steel web, 6. Track, 7. Backing plate, 8. Bolt Nails, 9. Corrugated steel webs, 10. Temporary support beams, 11. Side forms, 12. Bottom formwork, 13. Anti-collision barriers, 14. Working platforms, 15. Buckle wheels.

detailed description

In order to further elaborate the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the specific implementation, features and effects of the traveling device and method of use of the mobile trolley proposed according to the present invention are described in detail below.

Example 1

As shown in Figures 1 to 2, the running device of the mobile trolley of the present invention is composed of a main truss, a hanging basket lifting part, a walking part, a template part and an anchoring part, the main truss realizes the fixing of the mobile hanging basket, and the main truss is connected to the The top of the lifting part of the hanging basket and the bottom of the lifting part of the hanging basket are connected with a template part, and the movement of the mobile hanging basket is realized through the walking part, and the walking part is fixed on the anchoring part.

Wherein the main truss is composed of the upper beam 1, the longitudinal beam 3 and the hanging basket leg 4, the longitudinal beam 3 is set under the upper beam 1, the longitudinal beam 3 and the upper beam 1 are mutually vertically arranged and fixed, the upper beam 1 and the longitudinal beam 3. The two are connected by welding; the longitudinal beam 3 is fixedly connected with the legs 4 of the hanging basket. The hanging basket leg 4 is arranged between the longitudinal beam 3 and the track 6, and the hanging basket leg 4 and the longitudinal beam 3 are connected by welding, and the hanging basket leg 4 and the track 6 are connected by a buckle wheel 15 Connection, the legs of the hanging basket play a role in supporting the overall hanging basket structure.

The lifting part of the hanging basket is a boom 2, and there are multiple booms. Set jacks of different specifications according to the force, so as to adjust the elevation of the bottom formwork in time and quickly, improve production efficiency and shorten the construction period.

The anchoring part is a Π-shaped backing plate 7, and the backing plate 7 is anchored on the flange steel plate 5 on the corrugated steel web, and the studs 8 are connected on the flange steel plate 5 on the corrugated steel web to provide a platform for the hanging basket walking track 6 . The running part is made up of track 6, and track 6 is I-shaped steel beam, and track 6 is anchored on backing plate 7.

The formwork part is set under the corrugated steel web 9, including the bottom formwork 12 and the side forms 11 arranged on both sides of the bottom formwork 12, the bottom of the working platform 14 is connected with the lower end of the lifting part of the hanging basket, and is set on both sides of the formwork part , the outer sides of the working platform 14 are respectively provided with anti-collision barriers 13 .

The corrugated steel web 9 includes a left corrugated steel web and a right corrugated steel web, and a temporary support beam 10 is arranged between the left corrugated steel web and the right corrugated steel web to ensure that the corrugated steel web has sufficient transverse and longitudinal stiffness.

The method for using the running device of the mobile trolley of the present invention comprises the following steps:

First of all, the construction of the bridge pier and the zero block is carried out, and the zero block and the (N-0) section corrugated steel web are constructed simultaneously; after the construction of the bridge pier and the zero block is completed, the (N-1) section corrugated steel web is lifted, Corrugated steel web segments are connected together by high-strength bolts, and transverse supports 10 are arranged between the corrugated steel webs to ensure their stability;

Take the corrugated steel web as the load-bearing structure, anchor the Π-shaped backing plate 7 on the flange steel plate on the corrugated steel web, anchor the I-shaped track 6 on the backing plate 7, and install the new mobile hanging basket on the track 6. After the hanging basket is installed, use the bottom mold part of the hanging basket to carry out the manufacturing process of the (N-1) section bottom plate, arrange the bottom formwork 12 and side formwork 11, and connect the steel bars in the (N-1) section bottom plate and the corrugated steel The web shear connectors are tied or welded together, and the (N-1) section floor concrete is poured and cured;

While making the concrete floor of the (N-1) section, hoist the corrugated steel web of the (N-2) section, the corrugated steel web sections are connected by high-strength bolts, and the corrugated steel web Horizontal supports are set between the plates to ensure their stability;

After the concrete of the corrugated steel web bottom slab of section (N-1) reaches the design strength requirement, the bottom template 12 is removed, and the Π-shaped backing plate 7 and the I-shaped track 6, after the hanging basket moves forward, remove the Π-shaped backing plate 7 and I-shaped track 6 on the flange steel plate 5 on the corrugated steel web on the (N-1) segment, and construct the (N-1) segment simultaneously Corrugated steel web concrete top slab and (N-2) section corrugated steel web concrete bottom slab;

After the (N-1) section top slab concrete and (N-2) section bottom slab concrete meet the design strength requirements, the (N-1) section top slab and (N-2) section bottom slab formwork are removed, and the (N-2) section bottom slab formwork is removed. 1), (N-2) segmental corrugated steel web temporary support, tensioning (N-1) top plate, (N-2) segmental bottom plate prestressed reinforcement respectively, and grouting; at the same time install (N-3 ) Segmental corrugated steel webs shall be constructed cyclically in accordance with the above sequence.

In the walking device of the mobile trolley proposed by the present invention, the formwork part does not include the top plate formwork and the flange plate formwork, which reduces the weight of the mobile hanging basket itself and provides work stability and safety; the left corrugated steel web and the right corrugated Temporary support beams are set between the steel webs to ensure that the corrugated steel webs have sufficient transverse and longitudinal rigidity; the setting of anti-collision guardrails ensures the safety of the hanging basket during use. It overcomes the limitations of the mobile hanging basket of the SCC self-supporting construction method, and can be applied to prestressed bridges with arbitrary corrugated steel webs, which increases the practicality and expands the scope of application.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes. Technical Essence of the Invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (5)

1. A walking device of a mobile trolley, characterized in that: it is composed of a main truss, a hanging basket lifting part, a walking part, a template part and an anchoring part, the main truss realizes the fixing of the mobile hanging basket, and the main truss is connected The top of the lifting part of the hanging basket, the bottom of the lifting part of the hanging basket is connected with a template part, and the movement of the mobile hanging basket is realized through the walking part, and the walking part is fixed on the anchoring part; The main truss is composed of an upper beam (1), a longitudinal beam (3) and a hanging basket leg (4); The longitudinal beam (3) is arranged under the upper beam (1), and the longitudinal beam (3) and the upper beam (1) are vertically arranged and fixed to each other; The longitudinal beam (3) is fixedly connected to the legs (4) of the hanging basket; The anchoring part is a backing plate (7), and the backing plate (7) is anchored on the flange steel plate (5) on the corrugated steel web; The running part is composed of a track (6), and the track (6) is anchored on the backing plate (7); The backing plate (7) is a Π-shaped backing plate; The track (6) is an I-shaped steel beam; The hanging basket leg (4) is connected with the track (6) by a buckle wheel (15). 2. The traveling device of the mobile trolley according to claim 1, characterized in that: the lifting part of the hanging basket is a boom (2), and there are multiple booms (2), and the boom (2 ) bottom is connected to the formwork part, and jacks of the same and/or different specifications are arranged at the connecting position of the suspender (2) and the formwork part. 3. The traveling device of the mobile trolley according to claim 2, characterized in that: the template part is arranged under the corrugated steel web (9), including a bottom template (12) and a bottom template ( 12) Side forms (11) on both sides; the corrugated steel web (9) includes a left corrugated steel web and a right corrugated steel web, and is arranged between the left corrugated steel web and the right corrugated steel web There are temporary support beams (10). 4. The traveling device of the mobile trolley according to claim 3, characterized in that it also includes a working platform (14), the bottom of the working platform (14) is connected to the lower end of the lifting part of the hanging basket, and is set Anti-collision barriers (13) are arranged on both sides of the template part and outside the working platform (14). 5. The method for using the running device of the mobile trolley according to claim 4, characterized in that: comprising the following steps, 1) Carry out the construction of the bridge pier and No. 0 block. After the construction of the No. 0 block and (N-0) section corrugated steel web is completed, hoist the (N-1) section corrugated steel web, and the adjacent corrugated steel web ( 9) Temporary support beams (10) are set between the transverse directions; 2) Anchor the Π-shaped backing plate (7) on the flange steel plate (5) on the (N-1) corrugated steel web, anchor the I-shaped track (6) on the backing plate (7), and install the hanging basket on the track (6), arrange the bottom formwork (12) and side formwork (11), fix the steel bars in the (N-1) section corrugated steel web bottom plate and the corrugated steel web shear connectors together, pour (N- 1) Segment floor concrete and maintenance; 3) While making (N-1) section concrete floor, hoist (N-2) section corrugated steel web; 4) After the concrete of the corrugated steel web bottom slab of the (N-1) segment reaches the design strength requirements, the bottom formwork (12) is removed, and the flange steel plate (5) on the corrugated steel web of the (N-2) segment is anchored Π-shaped backing plate (7) and I-shaped track (6), after the hanging basket moves forward, remove the Π-shaped backing plate (7) and I-shaped track (6), simultaneous construction of (N-1) segmental corrugated steel web concrete top slab and (N-2) segmental corrugated steel web concrete bottom slab; 5) After the (N-1) section corrugated steel web top slab concrete and (N-2) section (N-2) section corrugated steel web bottom slab concrete meet the design strength requirements, remove the (N-1) section corrugated steel web top slab and (N-2) Segmental corrugated steel web bottom plate formwork, remove (N-1) segmental corrugated steel web temporary support and (N-2) segmental corrugated steel web temporary support, respectively tension (N-1 ) Segmental corrugated steel web top plate prestressed reinforcement and (N-2) segmental corrugated steel web bottom plate prestressed reinforcement, grouting; at the same time install (N-3) segmental corrugated steel web; 6) The hanging basket moves forward, and the construction is repeated in the above sequence until it is completed.

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