WO2021031354A1

WO2021031354A1 - Method for movable formwork passing through hole, and device for movable formwork passing through hole

Info

Publication number: WO2021031354A1
Application number: PCT/CN2019/115005
Authority: WO
Inventors: 王兴阔; 王国光; 白宾; 韩军霞; 邢希瑞; 李龙; 马壮; 田礼民
Original assignee: 山东省路桥集团有限公司
Priority date: 2019-08-20
Filing date: 2019-11-01
Publication date: 2021-02-25
Also published as: CN110468715A; CN110468715B

Abstract

Provided are a method for a movable formwork passing through a hole, and a device for a movable formwork passing through a hole, which cannot affect the construction requirements and requirements for passing through a hole of under-deck self-propelled movable formworks. The method for a movable formwork passing through a hole comprises the following steps: assembling a movable formwork in place, adjusting the elevation of a form after pre-pressing is completed, and preparing to pour concrete after jacking and form assembly; curing the concrete after pouring is finished; hanging the whole movable formwork system by means of a front cross beam, a middle cross beam and a rear cross beam, dismantling a bracket and a bracket support leg, and moving a self-propelled trolley, the bracket and the bracket support leg to the next construction pier position; after same arrives in place, supporting the whole movable formwork system, dismantling a hanger system of the middle cross beam, the movable formwork falling as a whole, moving the movable formwork longitudinally under pushing of the self-propelled trolley, and the position of the rear cross beam being fixed; and moving the rear cross beam longitudinally and sliding same until the movable formwork, as a whole, longitudinally moves in place, and after same arrives in place, performing form assembly and jacking to conduct pouring construction of the next hole.

Description

Method and device for passing through hole of movable mold base

Technical field

The invention relates to a method and a hole device for a mobile formwork via hole, which are applied to the construction of a downward self-propelled mobile formwork bridge with small spacing between box girder parallel piers and columns with many restrictions, and belongs to the technical field of cast-in-place concrete box girder construction.

Background technique

The downward self-propelled mobile formwork is a special equipment for cast-in-place concrete box girder. There are certain requirements for the distance between the bridge pier column and the box girder during application. Especially in the construction of railway bridge box girder, the railway bridge box girder is connected side by side, the distance between the piers is small, the adjacent box girder is poured first, and at the same time, the horizontal mold opening of the formwork at the upper end of the main girder is restricted. The conventional mobile mold base opens the mold The form of vias is difficult to meet the requirements of longitudinal movement vias. There is one type of via hole for the existing downward self-propelled movable mold base. Generally, the main beam drives the template to open the mold horizontally to realize the hole. In special cases, the template is moved across the upper part of the main beam to realize the mold hole. When encountering a construction project with small pier-column spacing and parallel box girder, the via hole cannot be satisfied, and the mobile formwork cannot be used for construction, which affects the construction schedule and the construction is difficult, especially for the poor construction economy of the porous cast-in-place box girder.

Summary of the invention

In order to solve the problem that the downward self-propelled mobile formwork cannot be smoothly moved through the holes due to local limitations, the purpose of the present invention is to provide a mobile formwork through hole method and through hole device, which can not affect the construction of the downward self-propelled mobile formwork And via requirements.

In order to achieve the above objectives, the present invention is achieved through the following technical solutions:

A method for passing through a movable mold base includes the following steps:

1) Corbel legs and corbels are set on the pier caps, self-propelled trolleys are set above the corbels, and longitudinal beams are set above the self-propelled trolleys. The longitudinal beams include the main beam and the nose bridge on both sides of the main beam, above the longitudinal beam Set the template, the main beam is connected with the connecting beam, the middle beam and the rear beam in the beam are set on the poured concrete box girder, the front beam in the beam is set on the top of the pier in the traveling direction of the formwork, and the middle and front beam and the rear beam in the beam Connect the bridge of the nose, which is located on both sides of the main bridge and slidably installed on the self-propelled trolley;

2) A middle mechanical top is set on the connecting beam, a side mechanical top is set on the main beam, the middle template of the mobile mold base is set on the middle mechanical top, the side template of the mobile mold base is set on the side mechanical top, and the template is adjusted after the pre-compression is completed. Elevation, ready to pour concrete after lifting and closing the mold;

3) Curing the concrete after pouring;

4) Use the front beam, rear beam and middle beam to suspend the entire mobile formwork system, remove the corbels and corbel legs, move the self-propelled trolley, corbel and corbel legs to the next construction pier, and the self-propelled trolley , Corbel and corbel legs are installed in place;

5) Use self-propelled trolleys, corbels, corbel legs and back beams to support the entire mobile formwork system, remove the middle beam suspension rod system, and move the formwork as a whole to drop 100-300mm, and the two sides of the formwork are on the top of the main beam. After lateral translation, it moves longitudinally with the main beam, the middle bottom mold keeps the original horizontal position unchanged, passes through the middle of the top of the pier column, and moves the mold frame longitudinally under the push of the self-propelled trolley. The position of the rear beam does not move. The tie beams are sequentially opened and the corresponding pier columns are then closed to move the formwork longitudinally through the holes;

6) After the self-propelled trolley moves the linear rolling guide pair to cooperate, the cross beam moves longitudinally and slides until the mobile formwork is moved longitudinally in place, and the mold is closed and lifted for the next hole pouring construction.

A through hole device for a mobile mold base through hole method, including a template, a longitudinal beam, a tie beam, a cross beam, a bottom mold work cart, a corbel support and a lifting mechanism; the template includes a middle template and side templates located on both sides of the middle template The longitudinal beam includes the main beam and the nose bridge on both sides of the main beam, which are arranged along the length of the template; the beam includes the front beam, the middle beam and the rear beam, which are arranged in sequence, and are arranged along the width direction of the template; the two ends of the connecting beam are connected with the main beam ; The bottom mold work cart is set below the connecting beam, and the bottom mold work cart can move along the length of the main beam; the corbel support is set between the bearing platform and the self-propelled trolley; the self-propelled trolley is set above the corbel support, and the self-propelled trolley The nose bridge is installed on the upper slide; the longitudinally moving through hole unit includes a pair of linear rolling guides located between the nose bridge and the rear cross beam and the nose bridge and the front cross beam; the two ends of the lifting mechanism are connected to the main beam and the template respectively, and the lifting mechanism includes a lifting mechanism for lifting the side template The side mechanical roof and the middle mechanical roof for lifting the middle formwork, the two ends of the side mechanical roof are respectively connected to the main beam and the side formwork, and the two ends of the middle mechanical roof are respectively connected to the tie beam and the middle formwork.

In the preferred solution of the mobile die frame through hole method using the through hole device, the main beam is a box structure welded by plates, and the nose bridge is a truss structure welded by plates and section steel.

In the preferred solution of the via hole device for the mobile mold base via method, the connecting beam is an I-shaped structure welded by plates.

In the preferred solution of the via hole device for the mobile mold base via hole method, the corbel support includes a corbel and a corbel leg, the corbel is a triangular structure welded by plates, and the corbel leg is a box structure welded by plates.

The advantages of the present invention are:

The formwork on both sides translates on the top of the main beam to both sides and then moves longitudinally with the main beam. The middle bottom form keeps the original horizontal position unchanged. The movable formwork is moved across the hole from the middle of the top of the pier, and the rear cross beam and the rear nose bridge are used as rear fulcrums. The auxiliary mobile formwork moves through the holes vertically, which solves the problem that the downward self-propelled formwork cannot be suitable for space-constrained construction projects. Compared with other forms of construction, it can save a lot of manpower and material resources, greatly shorten the construction period and save Cost, the advantages of this equipment can be reflected in projects with tight construction period and high construction difficulty, and its technicality, applicability and economy are feasible.

Description of the drawings

The accompanying drawings are used to provide a further understanding of the patent of the present invention, and constitute a part of the specification. Together with the embodiments of the patent of the invention, they are used to explain the patent of the invention, and do not constitute a limitation to the patent of the present invention.

Figure 1 is a cross-sectional view of the mobile formwork in the pouring state of the selected embodiment of the invention patent;

Figure 2 is a cross-sectional view of the moving form of the movable mold carrier according to the selected embodiment of the patent of the present invention;

Figure 3 is a cross-sectional view of the front crossbeam of the movable formwork according to the selected embodiment of the invention patent;

4 is a cross-sectional view of the middle beam of the movable formwork according to the selected embodiment of the invention patent;

Figure 5 is a cross-sectional view of the rear cross beam of the movable formwork according to the selected embodiment of the invention patent;

Figure 6 is a longitudinal construction drawing of the mobile formwork of the selected embodiment of the invention patent;

Fig. 7 is an enlarged schematic diagram of the selected embodiment of the patent of the present invention after removing the pillars and the corbel cart.

Among them, 1- template; 2- main beam; 3- nose bridge; 4- beam; 5- self-propelled trolley; 6-corbel; 7-corbel leg; 8-front beam; 9-middle beam; 10-back Cross beam, 11-bottom mold working trolley, 12-middle mechanical top, 13-side mechanical top, 14-side template, 15-middle bottom mold, 16-horizontal cylinder.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "vertical", "upper", "lower", "horizontal" and the like are based on the directions or positional relationships shown in the drawings, and are only for It is convenient to describe the utility and simplified description, rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. As described in the background art, the downward self-propelled movable formwork cannot be smoothly moved longitudinally through the hole due to local limitations. In order to solve the above-mentioned problems, the present invention adopts the following technical solution: a method for moving a mold base through a hole using a lateral micro-opening moving mold base through hole device, including the following steps:

1) Corbel legs 7 and corbel 6 are set on the pier column, self-propelled trolley 5 is set above the corbel 6, and longitudinal beams are set above the self-propelled trolley 5. The longitudinal beams include the main beam 2 and the two sides of the main beam 2. Nose bridge 3, a formwork is set above the longitudinal beam, the main beam 2 is connected to the connecting beam 4, and the formwork is set above the longitudinal beam. The middle beam 9 and the rear beam 10 of the beam are set on the cast concrete box beam, and the front beam 8 of the beam is set on On the top of the pier in the forward direction of the formwork, the front cross beam 8 and the rear cross beam 10 in the cross beam are connected to the nose bridge 3, which is located on both sides of the main beam and is slidably installed on the self-propelled trolley 5;

2) The connecting beam 4 is provided with a middle mechanical roof 12, the main beam 2 is provided with a side mechanical roof 13, the middle template 15 of the mobile formwork is set on the middle mechanical roof 12, and the side formwork 14 of the mobile formwork is set on the side mechanical roof 13. After the pre-compression is completed, adjust the height of the formwork, and prepare to pour the concrete after lifting and closing the form;

3) Curing the concrete after pouring;

4) Use the front beam 8, the rear beam 10, and the middle beam 9 to suspend the entire mobile formwork system, remove the corbel 6 and the corbel leg 7, and move the self-propelled trolley 5, corbel 6 and corbel leg 7 to the bottom A construction pier, self-propelled trolley 5, corbel 6 and corbel leg 7 are installed in place;

5) Use the self-propelled trolley 5, the corbel 6, the corbel leg 7 and the rear cross beam 10 to support the entire mobile formwork system, remove the middle beam 9 suspender system, the mobile formwork as a whole drop 100-300mm mold, 14 templates on both sides After the top of the main beam 2 is translated to both sides, it moves longitudinally with the main beam 2. The middle bottom mold 15 keeps the original lateral position unchanged, passes through the middle of the top of the pier column, and moves the mold frame longitudinally under the push of the self-propelled trolley 5. The position of the cross beam 10 does not move, and the connecting beam 4 is opened in sequence during the longitudinal movement, and the corresponding pier column is then closed to move the mold frame longitudinally through the hole;

6) The self-propelled trolley 5 moves the linear rolling guide pair to cooperate with the cross beam 10 to longitudinally move and slide until the mobile formwork is moved longitudinally in place, and the mold is closed and lifted for the next hole pouring construction.

A lateral micro-mold opening mobile mold base through hole device, including a template, a longitudinal beam, a connecting beam 4, a cross beam, a bottom mold work car 11, a corbel support and lifting mechanism, wherein:

The formwork includes a middle formwork 15 and a side formwork 14 located on both sides of the middle formwork 15. The bottom of the side formwork 14 is equipped with H-shaped steel. This structural formwork mainly considers the influence of the space on both sides and the cushion stone on the top of the pier. The range is moved horizontally outward through the horizontal cylinder 16 arranged horizontally, the position of the middle template 15 is not moving, and it can only be moved longitudinally forward between the cushion stones on the top of the pier driven by the beam;

The longitudinal beams include the main beam 2 and the nose bridges 3 located on both sides of the main beam 2, which are arranged along the length of the formwork. The main beam 2 does not move horizontally, but the longitudinal movement drives the longitudinal movement of the formwork 14 on both sides;

The crossbeam includes a front crossbeam 8, a middle crossbeam 9 and a rear crossbeam 10 arranged in sequence, which are arranged along the width direction of the formwork;

The connecting beam 4 is connected with the main beam 2 by bolts at both ends;

The bottom mold work cart 11 is arranged under the connecting beam, and the bottom mold work cart 11 can move along the length direction of the main beam 2;

Corbel support, set between the bearing platform and the self-propelled trolley 5;

The longitudinally moving through hole unit includes a linear rolling guide pair located between the nose bridge 3 and the rear cross beam 10, and between the nose bridge 3 and the front cross beam 8. Actually, the upper part of the nose bridge 3 is welded with a T-shaped guide rail, and the lower part of the rear cross beam 10 is provided with a roller mechanism. Set the reserved holes for the lifting beam, the lower roller mechanism of the rear cross beam 10 and the upper T-shaped track of the nose bridge 3 are clamped together, and use it as a fulcrum to assist the moving mold carrier to move longitudinally through the hole. After the rollers are separated from the T-shaped guide rail, the rear cross beam 10 Move to the next station;

The two ends of the lifting mechanism are respectively connected to the main beam 2 and the formwork. The lifting mechanism includes a side mechanical top 13 for lifting the side formwork 14 and a middle mechanical top 12 for lifting the middle formwork 15. The two ends of the side mechanical top 13 are respectively connected to the main The two ends of the beam 2 and the side formwork 14 and the middle mechanical roof 12 are respectively connected to the connecting beam and the middle formwork 15.

In this embodiment, the main beam 2 is a box structure welded by plates, and the main beam 2 bears the concrete force during the construction of the box beam.

In this embodiment, the nose bridge 3 is a truss structure welded by plate and section steel, which is mainly used for the longitudinal walking of the movable formwork.

In this embodiment, the tie beam is a plate-welded I-shaped structure, which is used to horizontally connect the main beam, the force when pouring concrete, and the longitudinal walking of the middle part of the template. The tie beam needs to drive the middle bottom mold to move longitudinally, so the connecting beam The tie beams cannot be fully opened for longitudinal movement of the formwork, and all the tie beams are opened will affect the overall stability of the formwork. The connecting beams are opened in sequence, and then the corresponding piers are closed to move the formwork longitudinally through the holes.

In this embodiment, the corbel support includes a corbel 6 and a corbel leg 7. The corbel 6 is a triangular structure welded by plates. Due to space constraints and the micro-opening form of the movable mold base, this solution is designed as a small triangle The corbel structure is used to bear the force of the entire movable formwork during pouring and walking. The corbel leg 7 is a box-type structure welded by plates.

Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it is still for those skilled in the art. The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

A method for passing through a movable mold base is characterized in that it comprises the following steps:

1) Corbel legs (7) and corbels (6) are set on the pier caps. Self-propelled trolleys (5) are set above the corbels (6), and longitudinal beams are set above the self-propelled trolleys (5). The longitudinal beams include The main beam (2) and the nose bridge (3) on both sides of the main beam (2), a template is set above the longitudinal beam, the main beam (2) is connected to the connecting beam (4), the middle beam (9) and the rear beam in the beam (10) Set on the poured concrete box beam, the front beam (8) of the beam is set on the top of the pier in the traveling direction of the formwork, and the front beam (8) and the rear beam (10) of the beam are connected to the nose beam (3) , The nose bridge (3) is located on both sides of the main beam and is slidably installed on the self-propelled trolley (5);

2) A middle mechanical roof (12) is set on the connecting beam (4), a side mechanical roof (13) is set on the main beam (2), and the middle template (15) of the movable mold base is set on the middle mechanical roof (12). The side formwork (14) of the formwork is set on the side mechanical roof (13), the height of the formwork is adjusted after the pre-compression is completed, and the concrete is ready to be poured after the formwork is lifted and closed;

3) Curing the concrete after pouring;

4) Use the front cross beam (8), the rear cross beam (10), and the middle cross beam (9) to hang the entire mobile formwork system, remove the corbel (6) and the corbel leg (7), and move the self-propelled trolley (5) , Corbel (6) and corbel leg (7) to the next construction pier, self-propelled trolley (5), corbel (6) and corbel leg (7) are installed in place;

5) Use the self-propelled trolley (5), the corbel (6), the corbel leg (7) and the rear cross beam (10) to support the entire mobile formwork system, remove the middle beam (9) boom system, and move the formwork as a whole The drop mold is 100-300mm, the two side templates (14) are translated on the top of the main beam (2) to both sides and then move longitudinally with the main beam (2), and the middle bottom mold (15) remains unchanged from the top of the pier column. In the middle, the movable formwork moves longitudinally under the push of the self-propelled trolley (5), and the rear cross beam (10) does not move. During the longitudinal movement, the connecting beams (4) are opened in sequence and moved by the corresponding pier column and then closed. The mold base moves longitudinally through the hole;

6) The self-propelled trolley (5) moves the linear rolling guide pair to cooperate with the cross beam (10) to longitudinally move and slide until the mobile formwork is moved longitudinally in place, and the mold is closed and lifted for the next hole pouring construction.
A through hole device for a mobile mold base through hole method according to claim 1, characterized in that it comprises a template, a longitudinal beam, a tie beam (4), a cross beam, a bottom mold work car (11), a corbel support and lifting Mechanism; the template includes the middle template (15) and the side template (14) located on both sides of the middle template (15); the longitudinal beam includes the main beam (2) and the nose bridge (3) on both sides of the main beam (2), along the template The beam is arranged in the length direction; the beam includes a front beam (8), a middle beam (9) and a rear beam (10) arranged in sequence along the width direction of the formwork; the two ends of the tie beam (4) are connected with the main beam (2); the bottom The mold work cart (11) is set under the connecting beam, and the bottom mold work cart (11) can move along the length direction of the main beam (2); the corbel is supported and set between the bearing platform and the self-propelled trolley (5); The trolley (5) is set above the corbel support, and the nose bridge (3) is slidably installed on the self-propelled trolley (5); the longitudinally moving through hole unit includes the nose bridge (3) and the rear cross beam (10), the nose bridge (3) and the front cross beam ( 8) between the linear rolling guide pair; the two ends of the lifting mechanism are respectively connected to the main beam (2) and the template. The lifting mechanism includes a side mechanical top (13) for lifting the side template (14) and a middle template for lifting The two ends of the middle mechanical roof (12) and the side mechanical roof (13) of (15) are respectively connected to the main beam (2) and the side template (14), and the two ends of the middle mechanical roof (12) are connected to the connecting beams (4) and Intermediate template (15).
The via device for the mobile mold base via method according to claim 2, wherein the main beam (2) is a box structure welded by plates, and the nose bridge (3) is a truss structure welded by plates and section steel.
The via device for the mobile mold base via method according to claim 2, wherein the connecting beam (4) is an I-shaped structure welded by plates.
The via device for the mobile mold base via method according to any one of claims 2 to 4, wherein the corbel support includes a corbel (6) and a corbel leg (7), and the corbel (6) It is a triangular structure welded by plates, and the corbel leg (7) is a box structure welded by plates.