CN110682416A - Formwork system and construction method of prefabricated integrated pipe gallery - Google Patents

Abstract

The invention relates to a formwork system for a prefabricated integrated pipe gallery and a construction method thereof, comprising a prefabricated pedestal, two sides of the prefabricated pedestal are respectively provided with walking rails along the longitudinal direction, and the walking rails are provided with walking rails that cooperate with them and are used for The outer mold hydraulic system for forming the outer mold of the integrated pipe gallery, the upper side of the prefabricated pedestal is provided with a bottom plate, and the bottom plate is provided with an inner mold hydraulic system that can move in the longitudinal direction and is used to form the inner mold of the integrated pipe gallery, the bottom plate is provided with The end formwork of the integrated pipe gallery is also set on the upper part. The formwork system of the prefabricated integrated pipe gallery is conducive to improving the quality of engineering construction and improving work efficiency.

Description

Formwork system and construction method of prefabricated integrated pipe gallery

technical field

The invention relates to a formwork system for a prefabricated integrated pipe gallery and a construction method thereof.

Background technique

The production plan of the existing integrated pipe gallery usually adopts semi-mechanization of the inner membrane system and mechanization of the outer mold, which not only has low work efficiency, but also has poor construction quality and greatly increases the on-site construction period. In addition, due to the long construction period on site, the exposure time of the foundation pit of the pipe gallery is long, resulting in a short maintenance time for the pipe gallery segment, and large creep and stress loss of the gallery body behind the long bridge. To this end, a formwork system for prefabricated integrated pipe gallery is required.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a formwork system of a prefabricated integrated pipe gallery and a construction method thereof, and the formwork system of the prefabricated integrated pipe gallery is conducive to improving the quality of engineering construction and improving work efficiency.

The technical scheme of the present invention is as follows: a formwork system for prefabricated integrated pipe gallery, comprising a prefabricated pedestal, two sides of the prefabricated pedestal are respectively provided with walking tracks along the longitudinal direction, and the walking tracks are provided with walking rails that cooperate with them and are used for The outer mold hydraulic system for forming the outer mold of the integrated pipe gallery, the upper side of the prefabricated pedestal is provided with a bottom plate, and the bottom plate is provided with an inner mold hydraulic system that can move in the longitudinal direction and is used to form the inner mold of the integrated pipe gallery, the bottom plate is provided with The end formwork of the integrated pipe gallery is also set on the upper part.

Further, the outer mold hydraulic system includes a sliding seat matched with the walking track, an outer mold frame is arranged on the sliding seat, an outer template is arranged on the inner side and the top surface of the outer mold frame, and the outer mold frame is provided with an outer template. The inner side of the lower end is hinged with the sliding seat, the outer side of the sliding seat is obliquely hinged with a telescopic cylinder, and the telescopic end of the telescopic cylinder is hinged with the outer side of the lower end of the outer mold frame.

Further, a climbing ladder is provided on the outer mold base, a safety guardrail is provided on the outer side of the top of the outer mold base, and an operating platform and an observation system are provided on the top of the outer mold base.

Further, the bottom of the sliding seat is provided with a roller matched with the running track, and the roller is driven to rotate by a driving motor.

Further, the inner mold hydraulic system includes a pair of longitudinal guide rails erected on the base plate and detachably connected to the base plate, one end of the longitudinal guide rail is provided with a cantilever end, and a cantilever end is provided with a sliding fit with the longitudinal guide rail. The installation seat is provided with an inner template for forming the inner cavity of the integrated pipe gallery.

Further, a pair of support blocks for making one end of the longitudinal guide rail form a cantilever end are respectively disposed on the lower side of the longitudinal guide rail, and a sliding block slidingly matched with the longitudinal guide rail is disposed on the mounting seat.

Further, the inner formwork includes a top formwork, a bottom formwork and an arc-shaped side formwork located on both sides. The upper side of the mounting seat is vertically provided with several first cylinders that drive the top formwork to rise and fall, and the two sides of the mounting seat are vertically arranged. A plurality of second cylinders connected to the arc-shaped side formwork are respectively arranged at intervals, and a plurality of third air cylinders for driving the bottom formwork to rise and fall are arranged on the lower side of the mounting seat.

Further, a height-adjustable steel pad is arranged between the bottom plate and the prefabricated pedestal, the end formwork is detachably connected to the hydraulic system of the outer mold and the hydraulic system of the inner mold, and the end formwork is provided with a spacer that avoids the hydraulic system of the inner mold. gap.

A construction method for a prefabricated integrated pipe gallery, comprising a formwork system for a prefabricated integrated pipe gallery, the steps are as follows:

(1) Install the hydraulic system of the outer mold on the walking tracks on both sides of the prefabricated pedestal;

(2) Bind the steel cage on the bottom plate;

(3) Install the inner mold hydraulic system on the base, so that the inner template of the outer mold hydraulic system extends into the steel cage and unfolds, and then install the end template on both sides of the outer mold hydraulic system and the inner mold hydraulic system;

(4) Concrete is poured in the cavity enclosed by the hydraulic system of the outer mold, the hydraulic system of the inner mold and the end formwork;

(5) After the strength meets the design requirements, remove the formwork in the order of the end formwork, the outer formwork and the inner membrane plate;

(6) The prefabrication of the 1# beam segment completed first, and then the end of the beam segment is used as the end mold of the adjacent beam segment. , 5#, ... beam sections, complete the whole hole construction of 5-8 sections;

(6) Cover the top plate of the beam section with geotextile, and spray the side and inner box surface of the beam section for maintenance;

(7) When the design strength is reached, use a 75T gantry crane to transport the beam section to the beam storage area for storage.

Further, the hydraulic system of the outer mold, the hydraulic system of the inner mold and the template of the end template are cleaned before use, and the mold release agent is evenly brushed. , Brush evenly on the section of the beam section, and clean it with a wire brush and clean water before the beam section is hoisted; during maintenance, a telescopic light steel scaffold is used to seal it for steam maintenance.

Compared with the prior art, the present invention has the following advantages: the formwork system of the prefabricated integrated pipe gallery is conducive to improving the quality of engineering construction, greatly reducing the construction period on site, and improving work efficiency; it is helpful to shorten the exposure time of the foundation pit of the pipe gallery. , The maintenance time of the pipe gallery segment is long, and the creep and stress loss of the gallery body behind the long bridge are small; and it has a wide range of applications, with energy saving, environmental protection, emission reduction, and low carbon; high degree of mechanization and standardization.

Description of drawings

1 is a schematic cross-sectional view of a template system of the present invention;

Fig. 2 is the end face schematic diagram of the prefabricated platform of the present invention;

3 is a schematic top view of the prefabricated platform of the present invention;

4 is a schematic side view of the prefabricated platform of the present invention;

Fig. 5 is the structural schematic diagram of the hydraulic system of the outer mold of the present invention;

6 is a schematic diagram of the eversion state of the outer mold base in the outer mold hydraulic system of the present invention;

Fig. 7 is the structural schematic diagram of the inner mold hydraulic system of the present invention;

8 is a schematic side view of the inner mold hydraulic system of the present invention;

9 is a schematic diagram of the demolding state of the inner template in the hydraulic system of the inner mold of the present invention;

In the picture: 10-Prefabricated pedestal 11-Walking track 12-Bottom plate 20-External mold hydraulic system 21-Slide 22-External mold base 23-External template 24-Telescopic cylinder 25-Climbing ladder 26-Safety guardrail 27-Roller 28-Operation Platform 30 - Inner mold hydraulic system 31 - Longitudinal guide rail 32 - Cantilever end 33 - Mounting seat 34 - Support block 35 - Top template 36 - Bottom template 37 - Arc side template 38 - First cylinder 39 - Second cylinder.

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following specific embodiments are given and the accompanying drawings are described in detail as follows, but the present invention is not limited thereto.

Refer to Figure 1 to Figure 9

A formwork system for a prefabricated integrated pipe gallery, comprising a prefabricated pedestal 10, two sides of the prefabricated pedestal are respectively provided with walking rails 11 along the longitudinal direction, and the walking rails are provided with walking rails that cooperate with them and are used to form the outside of the integrated pipe gallery. The outer mold hydraulic system 20 of the mold, the upper side of the prefabricated pedestal is provided with a bottom plate 12 made of steel film, the bottom plate is provided with an inner mold hydraulic system 30 that can move in the longitudinal direction and is used to form an integrated pipe gallery inner mold , the bottom plate is also provided with the end formwork of the integrated pipe gallery.

In this embodiment, the hydraulic system of the outer mold includes a sliding seat 21 matched with the walking track, an outer mold frame 22 is arranged on the sliding seat, and an outer template 23 is arranged on the inner side and the top surface of the outer mold frame , the inner side of the lower end of the outer mold base is hinged with the sliding seat, the outer side of the sliding seat is obliquely hinged with a telescopic cylinder 24, and the telescopic end of the telescopic cylinder is hinged with the outer side of the lower end of the outer mold base, so that when the mold is removed, By shrinking the telescopic cylinder, the outer formwork is separated from the pipe gallery, reducing the demoulding process.

In this embodiment, a ladder 25 is provided on the outer mold frame, so that workers can climb up the hydraulic system of the outer mold to operate. A safety guardrail 26 is provided on the outer side of the top of the outer formwork to ensure construction safety. The top of the outer formwork is provided with an operating platform 28 and an observation system, so as to observe the level and elevation, so as to measure and control the prefabrication of the gallery body.

In this embodiment, the bottom of the sliding seat is provided with a roller 27 matched with the walking track, and the roller is driven to rotate by a driving motor, thereby moving the hydraulic system of the outer mold to cast the next pipe gallery beam section.

In this embodiment, the inner mold hydraulic system includes a pair of longitudinal guide rails 31 erected on the bottom plate and detachably connected to the bottom plate. One end of the longitudinal guide rail is provided with a cantilever end 32, and the cantilever end is provided with a longitudinal guide rail 31 . The mounting seat 33 with which the guide rail is slidably fitted is provided with an inner template for forming the inner cavity of the integrated pipe gallery, and the inner template can be telescopically adjusted to facilitate mold removal.

In this embodiment, a pair of support blocks 34 for making one end of the longitudinal rail form a cantilever end are respectively provided on the lower side of the longitudinal rail, so that the longitudinal rail can be stably installed on the bottom plate. The mounting seat is provided with a sliding block slidably matched with the longitudinal guide rail, so that the inner formwork can be fed into the cantilever end of the longitudinal rail during installation, and the inner formwork can be moved out of the beam segment during demolding.

In this embodiment, the inner formwork includes a top formwork 35, a bottom formwork 36 and arc-shaped side formwork 37 on both sides, and a plurality of first cylinders 38 that drive the top formwork to rise and fall are vertically arranged on the upper side of the mounting seat. The two sides of the mounting seat are respectively provided with a number of second cylinders 39 connected with the arc-shaped side template, the seat shell of the second cylinder is fixedly connected with the mounting frame, and the telescopic rod of the second cylinder is connected with the arc-shaped side template. Hinged. The lower side of the mounting seat is provided with a number of third air cylinders that drive the bottom formwork to rise and fall.

In this embodiment, a height-adjustable steel pad is arranged between the bottom plate and the prefabricated pedestal, so as to adjust the height or levelness of the bottom plate, and the end template is detachably connected to the hydraulic system of the outer mold and the hydraulic system of the inner mold, The end template is provided with a gap to avoid the hydraulic system of the inner mold, so as to facilitate the installation and removal of the hydraulic system of the inner mold.

The comprehensive pipe gallery is prefabricated by the long-line method. The prefabrication factory is equipped with 2 long-line comprehensive pipe gallery prefabricated pedestals (ranging from 5 to 8 sections according to the construction plan, and each section is 2.5 meters). Consistency (camber) meets design requirements. The outer mold is equipped with a hydraulic system and a running track. After demoulding, it moves longitudinally to the next beam-making pedestal (prefabricated pedestal).

A construction method for a prefabricated integrated pipe gallery, comprising a formwork system for a prefabricated integrated pipe gallery, and the construction steps are as follows:

(1) Install the hydraulic system of the outer mold on the walking tracks on both sides of the prefabricated pedestal;

(2) Bind the steel cage on the bottom plate;

(3) Install the inner mold hydraulic system on the base, so that the inner template of the outer mold hydraulic system extends into the steel cage and unfolds, and then install the end template on both sides of the outer mold hydraulic system and the inner mold hydraulic system;

(4) Concrete is poured in the cavity enclosed by the hydraulic system of the outer mold, the hydraulic system of the inner mold and the end formwork;

(5) After the strength meets the design requirements, remove the formwork in the order of the end formwork, the outer formwork and the inner membrane plate;

(6) The prefabrication of the 1# beam segment completed first, and then the end of the beam segment is used as the end mold of the adjacent beam segment. , 5#, ... beam sections, complete the whole hole construction of 5-8 sections;

(6) The roof of the beam section is covered with geotextile, the side and inner box surface of the beam section are protected by spraying, and the telescopic light steel scaffolding is used to seal it for steam curing;

(7) When the design strength is reached, use a 75T gantry crane to transport the beam section to the beam storage area for storage.

In this embodiment, the hydraulic system of the outer mold, the hydraulic system of the inner mold and the template of the end template are cleaned before use, and the mold release agent is evenly brushed, and the prefabricated beam sections are used as matching sections, and the beam sections are painted The isolation agent should be evenly brushed on the beam section, and cleaned with a wire brush and clean water before the beam section is hoisted.

The above are only preferred embodiments of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, designing different forms of formwork systems and construction methods for prefabricated integrated pipe gallery does not require creativity. Labor, without departing from the principle and spirit of the present invention, all equivalent changes, modifications, substitutions and alterations made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

Claims (10)

1. The utility model provides a prefabricated utility tunnel's template system, includes prefabricated pedestal, its characterized in that, the both sides of prefabricated pedestal are provided with the walking track respectively along longitudinal direction, be provided with on the walking track rather than the walking cooperation and be used for forming the external mold hydraulic system of utility tunnel external mold, the upside of prefabricated pedestal is provided with the bottom plate, be provided with on the bottom plate and follow longitudinal movement and be used for forming the centre form hydraulic system of utility tunnel centre form, still be provided with the end template of utility tunnel on the bottom plate.

2. The template system of the prefabricated comprehensive pipe gallery according to claim 1, wherein the external mold hydraulic system comprises a sliding seat matched with a walking track, an external mold frame is arranged on the sliding seat, external templates are arranged on the inner side surface and the top surface of the external mold frame, the inner side of the lower end of the external mold frame is hinged with the sliding seat, a telescopic cylinder is obliquely hinged to the outer side of the sliding seat, and the telescopic end of the telescopic cylinder is hinged with the outer side of the lower end of the external mold frame.

3. The template system of the prefabricated comprehensive pipe gallery according to claim 2, wherein a ladder stand is arranged on the outer die frame, a safety guardrail is arranged on the outer side of the top of the outer die frame, and an operating platform and an observation system are arranged on the top of the outer die frame.

4. The template system of the prefabricated comprehensive pipe gallery according to claim 2 or 3, wherein the bottom of the sliding seat is provided with a roller matched with the walking track, and the roller is driven to rotate by a driving motor.

5. The template system of the prefabricated utility tunnel according to claim 2 or 3, wherein the internal mold hydraulic system comprises a pair of longitudinal guide rails erected on and detachably connected with the bottom plate, one end of the longitudinal guide rails is provided with a cantilever end, the cantilever end is provided with a mounting seat in sliding fit with the longitudinal guide rails, and the mounting seat is provided with an internal template for forming an inner cavity of the utility tunnel.

6. The prefabricated utility tunnel formwork system of claim 5, wherein the lower sides of the longitudinal rails are respectively provided with a pair of support blocks for forming one end of the longitudinal rails into a cantilever end, and the mounting seat is provided with a sliding block slidably engaged with the longitudinal rails.

7. The template system of the prefabricated comprehensive pipe gallery according to claim 5, wherein the inner template comprises a top template, a bottom template and arc-shaped side templates located on two sides, a plurality of first air cylinders for driving the top template to lift are vertically arranged on the upper side of the mounting seat, a plurality of second air cylinders connected with the arc-shaped side templates are respectively arranged on two sides of the mounting seat at intervals, and a plurality of third air cylinders for driving the bottom template to lift are arranged on the lower side of the mounting seat.

8. The template system of the prefabricated comprehensive pipe gallery according to claim 1, wherein a steel cushion block with adjustable height is arranged between the bottom plate and the prefabricated pedestal, the end template is detachably connected with the outer die hydraulic system and the inner die hydraulic system, and a notch for avoiding the inner die hydraulic system is arranged on the end template.

9. A method of constructing a prefabricated utility tunnel including the formwork system of the prefabricated utility tunnel of claim 7, characterized by the steps of:

(1) respectively installing outer mold hydraulic systems on the walking rails on two sides of the prefabricated pedestal;

(2) binding a reinforcement cage on the bottom plate;

(3) installing an internal mold hydraulic system on the base, enabling an internal template of the external mold hydraulic system to extend into the reinforcement cage and expand, and then installing end templates on two sides of the external mold hydraulic system and the internal mold hydraulic system;

(4) pouring concrete in a cavity defined by the outer die hydraulic system, the inner die hydraulic system and the end die plate;

(5) after the strength meets the design requirement, sequentially removing the templates according to the sequence of the end template, the outer template and the inner membrane plate;

(6) prefabricating a 1# beam section, taking the end of the beam section as an end mould of an adjacent beam section, integrally hoisting a reinforcing steel bar which is bound and formed on a mould, sequentially manufacturing 2#, 3#, 4#, 5#, … … beam sections, and finishing the whole hole construction of 5-8 sections;

(6) covering geotextile on the top plate of the beam section, and performing spray maintenance on the side surface and the inner box surface of the beam section;

(7) and when the designed strength is reached, the beam sections are transported to a beam storage area for storage by adopting a 75T gantry crane.

10. The construction method of the template system of the prefabricated comprehensive pipe gallery according to claim 9, characterized in that templates of an outer mold hydraulic system, an inner mold hydraulic system and an end template are cleaned before use, a release agent is uniformly coated, prefabricated beam sections are used as matching sections, a separating agent is coated among the beam sections, the sections of the beam sections are uniformly coated, and the beam sections are cleaned by a steel wire brush and clean water before hoisting is completed; and during maintenance, the flexible light steel shed frame is adopted for sealing, and steam maintenance is carried out.

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