CN209799969U - An integral lifting cantilever formwork device for rapid construction of shaft lining - Google Patents

Abstract

The utility model discloses an integral lifting cantilever formwork device for rapid construction of shaft lining. An integral lifting cantilever formwork device for rapid construction of shaft lining, which includes a formwork, two main girder tripods supported on the lower part of the formwork, the panel of the formwork is bamboo plywood, and the inner upper part of the formwork is detachable Groundly connect two embedded parts, each main beam tripod is provided with a main back flute, the main back flute is arranged at the rear of the template and connected with the template, the main back flute The lower end is detachably connected to the horizontal right-angled side of the upper end of the main beam tripod, the vertical right-angled side of the main beam tripod is located on the side of the template, between the horizontal right-angled side of the main beam tripod and the main back flute Adjustable length diagonal braces are connected between them, and a cantilever beam is connected to the upper end of each main backrest, and the upper end of each main beam tripod near the formwork is provided with a suspension connection points.

Description

An integral lifting cantilever formwork device for rapid construction of shaft lining

technical field

The utility model relates to an integral lifting cantilever formwork device for rapid construction of shaft lining, which belongs to the technical field of shaft lining construction.

Background technique

With the rapid development of the economy, the traffic demand in the city will also increase. The limitation of urban land resources, the limitation of urban road expansion, and especially the time limit of old city planning seriously restrict the development of modern traffic demand. In order to achieve the sustainable development of urban economy, in addition to accelerating the infrastructure construction of urban elevated interchanges, the rail transportation system is an important way to solve this problem. At present, major cities are speeding up the construction of rail transit. Rail transit passing through the urban area is mainly based on underground excavation, and underground excavation stations and sections need to be organized through vertical shafts and horizontal passages. Shafts are generally deep. In the prior art, the lining construction of shafts is generally carried out with a full house of scaffolding. This construction method has the disadvantages of high turnover material consumption, time-consuming and laborious erection and dismantling; and the formwork of this construction method needs to be fixed by pull bolts, and It is extremely difficult to handle the waterproof construction at the position of the pull bolts; and this construction method takes a long time, and it is impossible to realize the simultaneous construction of the shaft lining and the transverse passage.

Contents of the invention

Aiming at the above-mentioned defects in the prior art, the utility model provides an integral lifting cantilever formwork device for rapid construction of shaft lining with simple structure, fast construction speed and recyclable formwork.

The utility model is realized through the following technical scheme: an integral lifting cantilever formwork device for rapid construction of shaft lining, which is characterized in that it includes a formwork, two main beam tripods supported on the lower part of the formwork, and the formwork The panel is bamboo plywood, the inner upper part of the formwork is detachably connected to two embedded parts, each main beam tripod is provided with a main back flute, and the main back flute is set at the rear of the formwork And connected with the template, the lower end of the main back flute is detachably connected to the horizontal right-angled edge of the upper end of the main beam tripod, and the vertical right-angled edge of the main beam tripod is located on the side of the template. A length-adjustable diagonal brace is connected between the horizontal right-angle side of the main beam tripod and the main back flute, and a cantilever is connected to the upper rear of each main back flute, and each of the main beam tripods A suspension connection point that can cooperate with the embedded part is provided on the side near the formwork at the upper end.

In the utility model, the main beam tripod, the main back corrugated, and the diagonal braces are all used to support the fixed formwork, and the diagonal braces can conveniently adjust the angle and verticality of the formwork, and a platform can be laid between the two main beam tripods to form a platform. Relevant operations can be carried out on this platform: for example, the installation formwork can be adjusted, the diagonal braces can be adjusted, etc. Two cantilever beams are used to lay a platform between them to form an operation platform, and construction personnel can perform concrete pouring operations on the operation platform. When the utility model is in use, the hoisting device can be used to lift up the whole, so that the rapid construction of the shaft lining can be realized.

Further, a suspension platform is connected to the lower part of the main beam tripod. By setting up the hanging platform, the construction personnel can stand on the hanging platform to remove the embedded parts, and then use mortar to repair the holes left after the embedded parts are taken out.

Further, in order to prevent slurry leakage and platform misalignment, a fine-tuning device is provided between the lower end of the main back flute and the main beam tripod. The formwork can be closely attached to the concrete through the fine-tuning device to prevent grout leakage and platform misalignment.

Further, the fine-tuning device includes a connecting frame, the lower end of the main back flute is connected to the connecting frame, and several pin holes are arranged in the horizontal direction on the horizontal right-angled edge of the upper end of the main beam tripod, and the connecting The frame is connected with the pin hole on the main beam tripod through a pin shaft. By changing the position of the pin hole connecting the lower end of the main back flute and the upper horizontal right-angle side of the main beam tripod, the distance between the formwork and the concrete can be adjusted conveniently, so that the formwork can be closely attached to the concrete.

Further, the main back corrugated is a pair of 12# channel steel. The structural strength of the formwork device can be effectively improved by using Shuangpin 12# channel steel as the main back flute.

Further, in order to facilitate construction, a platform is laid between the two cantilever beams to form an upper operating platform, and a platform is laid between the two main beam tripods to form a tripod platform. Construction personnel can carry out concrete pouring construction on the upper operating platform, and construction personnel can carry out construction operations such as formwork installation and adjustment on the tripod platform.

The beneficial effects of the utility model are: the utility model has a simple structure, can rapidly build a single wall cantilever formwork system, and has a fast construction speed. The utility model has its own operating platform, and there is no need to build a construction operation frame and support frame during construction, which can save a lot of manpower, material resources and operating space; The demolition speed is fast, which can greatly speed up the construction speed; when using the utility model for construction, the template does not need to be provided with wall-through bolts, and the template does not need to have additional reinforcement measures; the connectors in the utility model have a high degree of standardization and strong versatility. Repeated use; the formwork in the utility model can adopt a large formwork, the formwork joints are few, the surface is smooth, the poured concrete has a smooth surface, and the structural size is accurate; each part in the utility model is designed in a stereotyped form, and can be assembled as a whole. It realizes the overall lifting and quick installation of sections, and does not need to set through cross braces inside the shaft during construction, which can improve the working environment and construction efficiency. Using the utility model to carry out shaft lining construction can save a lot of turnover materials such as scaffolding, and the cantilever formwork device only occupies the inner wall of the shaft, and the space in the middle can provide the construction work space of the lower cross passage, which can realize the simultaneous construction of the cross passage and the shaft lining, and can Greatly improve construction efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the plane layout of the cantilever formwork device in the specific embodiment of the present invention;

Fig. 2 is an enlarged schematic view of part A in Fig. 1;

Fig. 3 is the construction schematic diagram in the specific embodiment of the present utility model;

Fig. 4 is a schematic structural view of a cantilever formwork device in a specific embodiment of the present invention;

Fig. 5 is the enlarged schematic view of the connection part between the lower end of the main back corrugated and the upper end of the main beam tripod of the cantilever formwork device in the present invention;

In the figure, 1. Template, 2. Main back corrugated, 3. Fine-tuning device, 4. Embedded parts, 5. Main beam tripod, 6. Diagonal brace, 7. Cantilever beam, 8. Hanging platform, 9. Protective railing, 10, protective railing, 11, core belt, 12, dense mesh, 13, slag outlet branch, 14, connecting frame, 15, pin hole.

Detailed ways

Below by non-limiting embodiment and in conjunction with accompanying drawing, the utility model is further described:

As shown in the accompanying drawing, a kind of overall hoisting cantilever formwork device used for fast construction of shaft lining includes a formwork 1, and two main beam tripods 5 are arranged at the lower part of each formwork 1, and the formwork 1 adopts a large formwork, and the panel of the formwork 1 is Bamboo plywood. Two embedded parts 4 are detachably connected to the inner upper part of the template 1 . The main beam tripod 5 is a right-angle tripod made of section steel. A main back corrugated 2 is arranged on every main girder tripod 5, and the main back corrugated 2 is preferably adopted as a pair of 12# channel steel. The main back flute 2 is arranged at the rear of the template 1 and is detachably connected with the template 1 through a connecting piece. The lower end of the main back flute 2 is detachably connected to the horizontal right-angled edge of the upper end of the main beam tripod 5, and the vertical right-angled edge of the main beam tripod 5 is located on the formwork side. Between the horizontal right-angled side of the main beam tripod 5 and the main back corrugated 2, a length-adjustable diagonal brace 6 is connected. The length can easily adjust the angle and verticality of the template. The template 1 can be tilted forward and backward by using the diagonal brace 6, and the maximum angle is 30°. A cantilever 7 is connected to the upper rear portion of each main back flute 2 . The upper end of each main beam tripod 5 is provided with a suspension connection point that can cooperate with the embedded part 4 near the formwork side.

For the convenience of construction workers, in the utility model, a hanging platform 8 can also be connected to the bottom of the main beam tripod 5 . Construction workers stand in the crane platform 8 and can carry out the operations of removing the embedded parts and repairing the holes left after the embedded parts are taken out.

In order to make the template close to the concrete and prevent grout leakage and platform misalignment, a fine-tuning device 3 is arranged between the lower end of the main back corrugated 2 and the main beam tripod 5, and the fine-tuning device 3 includes a connecting frame 14, the The lower end of the main back flute 2 is connected with the connecting frame 14, and several pin holes 15 are arranged in the horizontal direction on the horizontal right-angled edge of the upper end of the main beam tripod 5, and the connecting frame 14 is connected with the main frame through a pin shaft. The pin holes 15 on the beam tripod 5 are connected in cooperation. The connecting frame 14 adjusts the formwork by coordinating the different pin holes 15 on the main beam tripod 5 through the pin shaft, so that the formwork is closely attached to the concrete to prevent grout leakage and wrong platform.

For the convenience of construction, in the utility model, a deck is laid between two cantilever beams 7 to form an upper operating platform, and a deck is laid between two main beam tripods 5 to form a tripod platform. Construction personnel can perform concrete pouring construction on the upper operating platform, and construction personnel can perform formwork installation and adjustment on the tripod platform.

In order to improve the strength of the formwork device, wooden I-beams can also be set at the rear of the formwork as the longitudinal back corrugation.

In the specific design and production of the utility model, according to the lateral pressure during concrete pouring, the thickness of the formwork, the back corrugated material and specifications are reasonably designed; according to the structural reinforcement ratio, the weight of steel bars to be stacked each time and other construction loads, the pre-embedding is optimized. The parameters of parts and load-bearing brackets are safe and economical. After the formwork is designed, a reasonable formwork production plan is determined according to the project schedule and formwork production cycle.

When utilizing the utility model to carry out the shaft lining construction, first assemble the tripod platform and the upper operating platform: each set of formwork device is supported by two main beam tripods 5, and the two main beam tripods 5 supporting the formwork are assembled first, and then the two main beam tripods 5 are assembled. Pave the platform between the main beam tripods 5 and install the protective railing to form a tripod platform; pad two wooden beams at the lower part of the formwork, and then install the main back corrugated 2, diagonal braces 6, and pickers 7 on the formwork to form the upper frame of the formwork , the main back flute and the formwork are connected by fasteners, steel pipe fasteners are used to connect the pick frame firmly, and the platform is paved between the two pick frames 7 and protective railings are installed to form the upper operating platform. The platform is required to be flat and firm. Open holes at the conflicting position to ensure the use of the upper frame of the formwork; then adopt the order from bottom to top to carry out concrete pouring construction layer by layer, including the following steps: (1) Set the formwork at the bottom of the shaft along the inner wall circumference of the shaft in sequence and use the bottom plate of the shaft to pour The pre-embedded bolts fix the template, and the embedded part 4 is installed on the template, and then the first concrete is poured; (2) when the second concrete is poured, the embedded part support is first fixed on the first concrete pour On the pre-buried pre-embedded parts 4, then use the hoisting device (tower crane or crane) to lift the assembled tripod platform as a whole in turn and hang it on the pre-prepared during the first concrete pouring through the suspension connection point on the main beam tripod 5. Insert the safety bolt into the embedded part support on the buried embedded part 4 and fix it with a hairpin, then use the hoisting device to lift the dismantled first-floor formwork upper frame as a whole and install it on the hung tripod platform, and Utilize diagonal brace 6 to adjust formwork angle, then carry out second concrete pouring; The device is lifted and suspended on the pre-embedded part 4 pre-buried during the previous concrete pouring, and the hanging platform 8 is installed on the lower part of the main beam tripod 5, and then the concrete is poured; the worker can stand on the hanging platform 8 to remove the embedded part, and then Use mortar to repair the holes left after the embedded parts are taken out; (4) Use the template lifting method during the third concrete pouring as the standard lifting method to carry out subsequent concrete pouring construction until the concrete pouring is completed.

During construction, a core strip 11 can be set between two adjacent formworks, and the cores 11 are connected. The formwork units are connected by core strips, which can ensure that the units are in a straight line.

Utilizing the utility model for shaft lining construction can save a large amount of turnover materials such as scaffolding, and the cantilever formwork only occupies the inner wall circumference of the shaft, and the space in the middle can provide the construction work space for the lower cross passage, realizing the simultaneous construction of the cross passage and the shaft lining. Greatly improved construction efficiency.

Other parts in this embodiment are all prior art, and will not be repeated here.

Claims (6)

1. The utility model provides an integral lifting cantilever formwork device for quick construction shaft lining, characterized by: the composite floor slab comprises a template (1) and two girder tripods (5) supported at the lower part of the template (1), wherein a panel of the template (1) is a bamboo plywood, two embedded parts (4) are detachably connected with the upper part of the inner side of the template (1), each girder tripod (5) is provided with a main back edge (2), the main back edge (2) is arranged at the rear part of the template (1) and connected with the template (1), the lower end of the main back edge (2) is detachably connected with a horizontal right-angle edge at the upper end of the girder tripod (5), the vertical right-angle edge of the girder tripod (5) is positioned at the side of the template, a length-adjustable diagonal brace (6) is connected between the horizontal right-angle edge of the girder tripod (5) and the main back edge (2), and the rear part of the upper end of each main back edge (2) is connected with a cantilever beam (7), and a hanging connection point which can be matched with the embedded part (4) is arranged at one side, close to the template, of the upper end of each girder tripod (5).

2. The integrally hoisted cantilever formwork apparatus for quickly constructing a shaft lining as claimed in claim 1, wherein: the lower part of the main beam tripod (5) is connected with a hanging platform (8).

3. The integrally hoisted cantilever formwork apparatus for quickly constructing a shaft lining as claimed in claim 2, wherein: and a fine adjustment device (3) is arranged between the lower end of the main back edge (2) and the main beam tripod (5).

4. The integrally hoisted cantilever formwork apparatus for quickly constructing a shaft lining as claimed in claim 3, wherein: fine setting (3) include link (14), the lower extreme of the stupefied (2) of main back with link (14) are connected be provided with a plurality of pinhole along the horizontal direction on the horizontal right angle edge in upper end of girder tripod (5), link (14) through the round pin axle with pinhole cooperation on girder tripod (5) is connected.

5. The integrally hoisted cantilever formwork apparatus for quickly constructing a shaft lining as claimed in claim 1, wherein: the main back edge (2) is a double-spliced 12# channel steel.

6. the integrally lifting cantilever formwork device for rapid construction of shaft lining as claimed in claim 1 or 2 or 3 or 4 or 5, wherein: a bedplate is laid between the two outriggers (7) to form an upper operating platform, and a bedplate is laid between the two main beam tripods (5) to form a tripod platform.