CN219548382U - Empty layer hanging template system of granulating tower - Google Patents

Abstract

The utility model relates to a granulating tower empty layer hanging template system, which consists of a plurality of hanging template modules, wherein each hanging template module comprises a bottom keel and side keels on two sides, a bottom die is paved on the bottom keel, hanging keels are arranged between the side keels on two sides, the end parts of two adjacent hanging template modules are fixedly connected with each other, a connecting keel is arranged at the top of the hanging template system, the connecting keels are connected with the hanging keels of all the hanging template modules, and a plurality of construction pull nodes are distributed on the hanging template system. The hanging template system is manufactured on the ground, so that overhead operation is reduced, construction safety is improved, modules of the hanging template system are partitioned according to the diameter of a prilling tower and the working performance of a tower crane, and the utilization rate of machinery is improved. The utility model can shorten the construction period, save a large number of turnover tools, reduce high-suspension operation, reduce construction difficulty and improve construction quality.

Description

Pelletizing tower overhead layer hanging formwork system

technical field

The utility model relates to a construction technology of a granulation tower, in particular to a formwork system for hanging an overhead layer of a granulation tower.

Background technique

The prilling tower is the key facility in the tower prilling technology. The internal structure of the prilling tower is relatively complicated and the construction is difficult. In particular, the overhead structure layer in the tower is close to the upper part of the tower top, and the overhead height is more than 50 meters. The overhead layer of the granulation tower is a double-layer plate structure with stiff beams on both sides. In the construction of the empty layer of the granulation tower, the general method is that the main body of the granulation tower adopts the truss radiation beam structure, and the inner platform rigidly connects the sliding formwork system to the top. , the inner platform of the truss is used as the operating platform for the construction of the aerial layer, on which the formwork support of the aerial floor, the binding of steel bars and the pouring of concrete are carried out. After the construction of the aerial floor is completed, the inner platform of the truss is unloaded to the ground.

This method has certain disadvantages: (1) The inner platform of the truss uses a lot of materials and the installation period is long; (2) The separation and lowering of the inner platform of the truss and the sliding form system after the sliding form reaches the top and the removal process of the platform after the construction of the overhead layer is completed (3) The truss operation platform has a large area and heavy weight, which is likely to cause safety accidents in various operations.

Utility model content

The purpose of this utility model is to provide a hanging formwork system for the overhead layer of the granulation tower to solve the problem of low construction efficiency and high-altitude operations caused by the construction of the truss inner platform set by the sliding form system as the operating platform for the existing granulation tower overhead layer. Many and poor security issues.

The utility model is realized in the following way: a suspended formwork system for the overhead layer of a granulation tower is composed of several suspended formwork modules, the suspended formwork modules include a bottom keel and side keels on both sides, There is a bottom form on the upper pavement, a hanging keel is set between the side keels on both sides, the ends of two adjacent hanging formwork modules are fixedly connected to each other, and a connecting keel is set on the top of the hanging formwork system. The connecting keel is connected to the hanging keel of all hanging formwork modules, and there are several structural tie points distributed on the hanging formwork system.

The side keels at the ends of two adjacent hanging formwork modules are connected and fixed as a whole by connecting keels.

The structural tie points include a pull rod and a pull ring arranged at the upper end of the pull rod, the pull rod passes through the bottom mold, the upper and lower ends of the pull rod are respectively welded to the hanging keel and the bottom keel, There is a bushing which is located between the hanger joist and the bottom joist.

The bottom keel is a grid structure formed by the main keel and the auxiliary keel.

The bottom mold is made of stainless steel, and V-shaped steel bars are arranged on the upper surface of the bottom mold.

The utility model also discloses a construction method for the superhigh granulation tower overhead layer, which comprises the following steps.

a. Install the finished two stiff beam steel skeletons to the predetermined position of the round silo of the prilling tower by tower crane.

b. Make and weld the bottom keel and side keel of the hanging formwork module on the ground in the round silo of the prilling tower, and install the bottom mold at the bottom of the hanging formwork module.

c. Use the tower crane to hoist the hanging formwork modules to the lower part of the stiff beam steel frame in turn, weld the hanging keel between the side keels on both sides, and the hanging keel spans the upper part of the two stiff beam steel frames.

d. After all the hanging formwork modules are installed in place, connect two adjacent hanging formwork modules to form a whole.

e. Install the long connecting keel to connect all the hanging keels into a whole.

f. Set up structural anchor points on the hanging formwork system, and the structural anchor points are connected to the silo wall of the round silo through steel wire ropes.

g. Bind the stiff beam reinforcement of the overhead floor and the bottom plate reinforcement of the overhead floor between the bottom form and the hanging keel.

h. Carry out concrete pouring for the bottom slab of the elevated floor, and the pouring level shall reach the upper surface of the bottom slab.

i. Support the lateral formwork of the stiffened beam and the upper slab formwork of the overhead floor, and bind the steel bars of the upper slab of the aerial floor.

j. Pour stiff beams and concrete on the upper slab of the elevated floor.

k. Remove the hanging formwork modules in turn and lower them to the ground.

The structural tie points include a pull rod and a pull ring arranged at the upper end of the pull rod, the pull rod passes through the bottom mold, the upper and lower ends of the pull rod are respectively welded to the hanging keel and the bottom keel, There is a bushing which is located between the hanger joist and the bottom joist.

The hanging formwork system is divided into several modules along the length direction of the stiff beam steel skeleton.

In step c, when carrying out the construction of the hanging keel, after initially checking the elevation and axis position of the hanging formwork module, first weld the hanging keel at both ends; after the welding of the hanging keel at both ends is completed, check each The elevation and position of the hanging keel should be checked and corrected before welding of the hanging keel in the middle.

In step d, the side keels at the ends of two adjacent hanging formwork modules are fixed as a whole by welding the connecting keels.

In step j, before pouring, water and moisten the chiseled surface of the stiffening beam, and clean up the slag; before pouring the concrete on the upper slab of the elevated floor, the concrete strength of the bottom slab of the elevated floor shall not be lower than 60% of the design strength; the pouring is completed Finally, the concrete is cured, and the curing time is not less than 7 days.

In step k, the hanging formwork modules are dismantled as a whole and lowered to the ground in sequence in the order of firstly installed and then dismantled, and later installed firstly dismantled.

In step k, when the skeleton of the hanging formwork module is removed, one end is suspended with a tower crane, and the other end is connected with an inverted chain. Vertically, then the tower crane as a whole lowers the skeleton of the hanging formwork module to the ground, and disintegrates the skeleton on the ground.

The suspended formwork system of the utility model is used for the construction of the overhead layer of the granulation tower. The suspended formwork body is processed on the ground in sub-modules. After processing, it is hoisted to the rigid beam steel frame at the predetermined position in turn, and the modules are connected to each other. After fixing as a whole and setting the structural tie points, the steel bars are bound on the hanging formwork system and the overhead layer is poured. After the overhead layer is poured, the hanging formwork modules are removed and lowered in order to complete the construction of the overhead layer.

The hanging formwork system is divided into multiple modules for fabrication, lifting, installation, dismantling and lowering, which can avoid safety accidents caused by excessive weight during the lifting process. The utility model adopts a hanging formwork system. The hanging formwork system is carried out after the construction of the round warehouse sliding formwork is completed. The hanging formwork system is hoisted by a tower crane without lifting it through the sliding formwork system, thereby reducing the construction cost of the sliding formwork. Compared with the inner platform of the truss, the structure of the hanging formwork system is simple, the production and installation period is short, and the lifting, lowering and dismantling of the hanging formwork system are relatively simple. The hanging formwork system only needs to cover the rectangular overhead floor area, and does not need to cover the entire interior of the silo like the inner platform of the truss, thus greatly saving materials and reducing the overall quality. The hanging formwork system reduces the deflection value of the formwork system by constructing tie points, which can ensure the levelness of the overhead floor during pouring.

Adoption of the hanging formwork system of the utility model can reduce high-altitude operations in the construction process of the overhead floor, improve construction efficiency and improve safety in the construction process.

Description of drawings

Figure 1 is a cross-sectional view of the overhead layer of the prilling tower.

Fig. 2 is a cross-sectional view of the hanging formwork module of the present invention.

Fig. 3 is a longitudinal sectional view of the hanging formwork module of the present invention.

Fig. 4 is a divisional plan view of the hanging formwork module of the present invention.

Fig. 5 is a connection structure diagram of adjacent formworks of the hanging formwork of the utility model.

Fig. 6 is a structural diagram of the utility model structure pull node.

Fig. 7 is an overall layout diagram of the hanging formwork system of the present invention.

In the figure: 1. Pelletizing tower overhead floor; 2. Main keel; 3. Auxiliary keel; 4. Side keel; 5. Connecting keel; 6. Hanging keel; 7. Connecting keel; 9. Steel wire rope; 10. Round silo of prilling tower; 1-1, stiff beam; 1-2, bottom plate of overhead floor; 1-3, upper plate of overhead floor; 8-1, pull rod; 8-2, pull ring; 8-3. Casing.

Detailed ways

As shown in Figure 1, the overhead floor 1 of the prilling tower is a hollow structure, and the overhead floor includes stiff beams 1-1 on both sides, and the bottom plate 1-2 of the overhead floor between the two stiff beams 1-1 and the upper layer of the overhead floor plate 1-3, and an upturning beam is provided on the upper part of the stiff beam 1-1. The overhead layer is located inside the silo 10 of the prilling tower and close to the top of the tower. It has a high height and a large span, and it is difficult to construct.

The hanging formwork system of the overhead layer of the granulation tower of the utility model is composed of several hanging formwork modules, the hanging formwork modules are shown in Figure 2 and Figure 3, the hanging formwork modules include the bottom keel and the side keels 4 on both sides A bottom formwork is laid on the bottom keel, and a hanging keel 6 is arranged between the side keels 4 on both sides. The ends of two adjacent hanging formwork modules are fixedly connected to each other, and a connection The tie keel 7 is connected with the hanging keel 6 of all hanging formwork modules, and a number of structural tie points 8 are distributed on the hanging formwork system.

As shown in FIG. 5 , between two adjacent modules, the side keels 4 at the ends of the two modules are welded and fixed as a whole by connecting keels 5 . Three upper, middle and lower connecting keels 5 are welded between the two side keels 4, thereby firmly fixing two adjacent modules together.

As shown in Figure 6, the structure pull node 8 includes a pull rod 8-1 and a pull ring 8-2 located at the upper end of the pull rod 8-1, the pull rod 8-1 passes through the bottom mold, and the upper and lower ends of the pull rod 8-1 are respectively connected to The hanging keel 6 is welded to the bottom keel, and a sleeve 8-3 is sleeved on the pull rod 8-1, and the sleeve 8-3 is located between the hanging keel 6 and the bottom keel.

Sleeve 8-3 is a PVC pipe, through which the concrete will not contact the pull rod 8-1 when pouring the concrete for the overhead floor, so that the pull rod 8-1 can be smoothly removed from the concrete in the follow-up process.

When in use, the pull ring 8-3 is connected to the wall of the prilling tower round bin 10 through the steel wire rope 9, and the steel wire rope 9 is in a tensioned state, the pull ring 8-3 is subjected to tension, and the construction pull node 8 transmits the tension to the suspension. Hang the keel 6 and the bottom keel, thereby controlling the vertical deformation and displacement of the structure's tie point 8.

Wherein, the bottom keel includes main keel 2 and auxiliary keel 3, and main keel 2 and auxiliary keel 3 form a grid structure.

The bottom mold is made of stainless steel, laid on the bottom keel, and used as the bottom formwork of the skyline during subsequent pouring of the skyline.

Among them, the main keel 2, the auxiliary keel 3, the side keel 4, the connecting keel 5, the hanging keel 6 and the connecting keel 7 are all C-shaped steel.

The superhigh granulation tower overhead layer construction method of the utility model specifically includes the following steps.

a. Install the finished two stiff beams 1-1 steel skeletons to the predetermined position of the round bin 10 of the prilling tower with a tower crane.

The steel skeleton of the stiff beam 1-1 is made of I-beam, and the steel skeleton of the stiff beam 1-1 is processed and manufactured on the ground in the round silo 10 of the prilling tower. 1-1 position and fixedly installed on the round bin 10 of the prilling tower. The height and position of the two stiff beams 1-1 steel skeleton shall be determined according to the drawings.

The two stiff beams 1-1 steel skeletons are arranged horizontally and parallel to each other. The skeleton and the area between are the design positions of the prilling tower overhead layer 1.

b. Make and weld the bottom keel and side keel 4 of the hanging formwork module on the ground in the round bin 10 of the prilling tower, and install the bottom mold at the bottom of the hanging formwork module.

As shown in Figure 4, the hanging formwork system is divided into several modules along the length direction of the steel frame of the stiff beam 1-1, and each module is fabricated sequentially on the ground.

The bottom mold is a stainless steel bottom mold, and the bottom mold is laid on the bottom keel, which is used as a template for the bottom surface of the skyline when pouring the skyline. Since the bottom form stays on the overhead floor after the pouring of the empty floor is completed, in order to ensure the firmness of the connection, a V-shaped steel bar is placed on the upper surface of the bottom form. in concrete.

c. Use the tower crane to hoist the hanging formwork modules to the lower part of the steel frame of the stiff beam 1-1 in sequence, and weld the hanging keel 6 between the side keels 4 on both sides of the module, and the hanging keel 6 spans the two stiffeners The upper part of the beam 1-1 steel skeleton.

After the hanging formwork module is hoisted in place, the two stiff beams 1-1 steel frames are just located between the side keels 4 on both sides, the bottom keel is located under the stiff beam 1-1 steel frames, and the hanging keels installed later 6 is located above the steel frame of the stiff beam 1-1, and the side keel 4, the bottom keel and the hanging keel 6 form a rectangular frame structure, and the two steel frames of the stiff beam 1-1 are located in the frame structure, so that the The beam 1-1 steel skeleton supports the entire hanging formwork module.

When carrying out horizontal hanging keel 6 construction, after initially checking the elevation and axis position of the hanging formwork module, first carry out welding of the hanging keel 6 at both ends of the module; after the welding of the hanging keel 6 at both ends is completed, check each The elevation and position of each hanging keel 6 position, after checking and correcting, carry out the welding of the hanging keel 6 in the middle.

d. After all the hanging formwork modules are installed in place, two adjacent hanging formwork modules are fixedly connected to each other to form a whole.

e. Install the through-length connecting keel 7 to connect all the hanging keels 6 into a whole.

There are several connecting keels 7, and the length direction of the connecting keels 7 is consistent with the length direction of the steel frame of the stiff beam 1-1. The length of the connecting keels 7 runs through all the hanging formwork modules, so that all the hanging keels 6 are connected as a whole, and the firmness of the connection of the hanging formwork system is further increased by connecting the keel 7, and the force bearing capacity of the hanging formwork system is enhanced at the same time.

f. Set the structural tie point 8 on the hanging formwork system, and the structural tie point 8 is connected with the warehouse wall of the round warehouse through the steel wire rope 9.

After installing the structural tie point 8, the overall installation of the hanging formwork is completed.

The position and quantity of the structural tie points 8 are determined according to the needs, and the deflection of the entire hanging formwork system is controlled through the structural tie points 8, so as to prevent the levelness of the overhead floor from not meeting the standard during pouring.

As shown in Figure 6, the structure pull node 8 includes a pull rod 8-1 and a pull ring 8-2 located at the upper end of the pull rod 8-1, the pull rod 8-1 passes through the bottom mold, and the upper and lower ends of the pull rod 8-1 are respectively connected to The hanging keel 6 is welded to the bottom keel, and a sleeve 8-3 is sleeved on the pull rod 8-1, and the sleeve 8-3 is located between the hanging keel 6 and the bottom keel.

As shown in Figure 7, the pull ring 8-2 is connected to the wall of the prilling tower round bin 10 through a steel wire rope 9, and the steel wire rope 9 is in a tensioned state, the pull ring 8-2 is subjected to tension, and the construction pull node 8 transmits the pull force To the hanging keel 6 and the bottom keel, so as to control the vertical deformation displacement at the position of the tie point 8 of the structure.

Sleeve 8-3 is a PVC pipe, through which the concrete will not contact the pull rod 8-1 when pouring the concrete for the overhead floor, so that the pull rod 8-1 can be smoothly removed from the concrete in the follow-up process.

g. Bind the steel bar 1-1 of the stiff beam of the aerial floor and the steel bar 1-2 of the bottom plate of the aerial floor between the bottom form and the hanging keel 6.

h. Carry out 1-2 concrete pouring on the bottom slab of the elevated floor, and the pouring level shall reach the upper surface of the bottom slab.

i. Support the stiff beam 1-1 lateral formwork and the upper slab 1-3 formwork of the overhead floor, and bind the steel bars 1-3 of the upper slab of the aerial floor.

j. Pouring the concrete of the stiff beam 1-1 and the upper slab 1-3 of the elevated floor.

Before pouring, water and moisten the chiseled surface of the stiffened beam 1-1, and clean up the debris; before pouring the concrete of the upper slab 1-3 of the elevated floor, the concrete strength of the bottom slab 1-2 of the elevated floor shall not be lower than 60% of the design strength %; After the pouring is completed, the concrete should be cured, and the curing time should not be less than 7 days.

k. Remove the hanging formwork modules in turn and lower them to the ground.

The hanging formwork modules are dismantled and lowered to the ground in sequence in the order of the first installation and then dismantling, and the last installation and first dismantling.

When the skeleton of the hanging formwork module is removed, one end is suspended by a tower crane, and the other end is connected by an inverted chain. After cutting the structural tie point 8 and the hanging keel 6, the skeleton of the hanging formwork module can be lifted from the poured Remove the upper layer, slowly lower the chain to make the skeleton of the hanging formwork module vertical, and then lower the skeleton of the hanging formwork module to the ground by the tower crane as a whole, and disassemble the skeleton on the ground.

The hanging formwork system of the utility model is used to construct the empty layer 1 of the granulation tower. The hanging formwork system is processed on the ground in sub-modules. After each module is connected and fixed as a whole and the structural tie point 8 is set, steel bars are bound on the hanging formwork system and the overhead floor is poured. After the overhead floor is poured, the hanging formwork modules are removed and lowered one by one to complete the construction of the overhead floor .

The steel frame of the stiff beam 1-1 and each hanging formwork module are fabricated and welded on the ground, thereby reducing work at heights. The hanging formwork system is divided into multiple modules for fabrication, lifting, installation, dismantling and lowering, which can avoid safety accidents caused by excessive weight during the lifting process. The utility model adopts a hanging formwork system. The hanging formwork system is carried out after the construction of the round warehouse sliding formwork is completed. The hanging formwork system is hoisted by a tower crane without lifting it through the sliding formwork system, thereby reducing the construction cost of the sliding formwork. Compared with the inner platform of the truss, the structure of the hanging formwork system is simple, the production and installation period is short, and the lifting, lowering and dismantling of the hanging formwork system are relatively simple. The hanging formwork system only needs to cover the rectangular overhead floor area, and does not need to cover the entire interior of the silo like the inner platform of the truss, thus greatly saving materials and reducing the overall quality. The hanging formwork system reduces the deflection value of the formwork system by constructing tie points 8, which can ensure the levelness of the overhead floor during pouring.

The hanging formwork system of the utility model is made on the ground, which reduces high-altitude operations and improves construction safety. By adopting the construction method, the construction speed is fast and the construction period is shortened. Adopting this method for construction saves a lot of turnover tools. The modules of the hanging formwork system are divided into blocks according to the diameter of the prilling tower and the working performance of the tower crane, which improves the utilization rate of the machine. By adopting the construction method, the high suspended work is reduced, the construction difficulty is reduced, and the construction quality is improved.

The profile steel used for the hanging formwork can consider the material used for the subsequent roof steel beams to select appropriate profile steel to further reduce costs. The installation and dismantling of the suspended formwork can be completed by using the on-site tower crane, without the need for additional lifting equipment entering the site. The modular fabrication, lifting, installation and dismantling of the hanging formwork reduces the difficulty of construction. The rigid beam 1-1 skeleton is used for load bearing, which saves a lot of formwork support system materials.

Claims (5)

1. A granulation tower overhead layer hanging formwork system is characterized in that it is composed of several hanging formwork modules, and the hanging formwork modules include bottom keels and side keels on both sides, and are laid on the bottom keels There is a bottom mold, and a hanging keel is set between the side keels on both sides, and the ends of two adjacent hanging formwork modules are fixedly connected to each other, and a connecting keel is set on the top of the hanging formwork system. The keel is connected to the hanging keel of all hanging formwork modules, and there are several structural tie points distributed on the hanging formwork system. 2. The suspended formwork system for the overhead layer of the prilling tower according to claim 1, wherein the side keels at the ends of two adjacent suspended formwork modules are connected and fixed as one by connecting keels. 3. The suspended formwork system for the overhead layer of the prilling tower according to claim 1, wherein the construction tie point includes a pull rod and a pull ring arranged at the upper end of the pull rod, and the pull rod passes through the bottom The upper and lower ends of the pull rod are respectively welded to the hanging keel and the bottom keel, and a sleeve is sleeved on the pull rod, and the sleeve is located between the hanging keel and the bottom keel. 4. The suspended formwork system for the overhead layer of the prilling tower according to claim 1, wherein the bottom keel is a grid structure formed by the main keel and the auxiliary keel. 5. The suspended formwork system for the overhead layer of the prilling tower according to claim 1, wherein the bottom mold is made of stainless steel, and a V-shaped steel bar is arranged on the upper surface of the bottom mold.