CN108675116B

CN108675116B - Construction method of PC (polycarbonate) component

Info

Publication number: CN108675116B
Application number: CN201810820596.8A
Authority: CN
Inventors: 陈盛; 纪孝泉; 王攀; 万翠娣; 田本唐; 董道全
Original assignee: Nanjing Huaigang Building Engineering Co ltd
Current assignee: Nanjing Huaigang Building Engineering Co ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2020-05-19
Anticipated expiration: 2038-07-24
Also published as: CN108675116A

Abstract

The invention discloses a construction method of a PC (polycarbonate) member, relates to the field of fabricated buildings, and solves the technical problem that the PC member is easy to damage and wastes materials in the process of hoisting and installing the PC member from the PC member stacked on a building site, wherein the technical scheme is as follows: the method comprises the following steps: the stacking yard of the PC components is characterized in that the PC components are separated from the ground by a plurality of skid frames, a flexible separator is arranged between every two adjacent PC components, and two sides of the stacked PC components in the stacking yard are provided with overturn prevention devices for preventing the PC components from toppling over; the PC component is lightly hung and lightly placed in the hoisting process of the PC component, and meanwhile, the plastic gasket is placed at the corrected position of the PC component before installation; this has the advantage of reducing damage to the PC component during use thereof.

Description

Construction method of PC (polycarbonate) component

Technical Field

The invention relates to the field of fabricated buildings, in particular to a construction method of a PC (polycarbonate) member.

Background

With the continuous acceleration of modern life rhythm and the continuous improvement of labor cost, the high integration and industrialization of building and housing become a new building direction. In addition, as the building materials are gradually developed toward the factory production, the prefabrication and the like, the assembly type and the modular building are produced. As is well known, the prefabricated building refers to a kind of building which is manufactured by a factory assembly line in a factory to complete all the components required by a house, i.e. PC components, and then transported to a construction site, where the PC components are hoisted and spliced. The prefabricated building is relatively wide in requirements on building environment due to convenience, high construction speed and wide application range in actual production and life.

But the PC components are easy to damage in the process of hoisting and installing from the PC components stacked on the construction site to the PC components, so that the material waste is caused.

Disclosure of Invention

The invention aims to provide a construction method of a PC (polycarbonate) member, which has the advantage of reducing the damage of the PC member in the processes from stacking to hoisting of the PC member.

The technical purpose of the invention is realized by the following technical scheme that the construction method of the PC component comprises the following steps:

the method comprises the following steps: the stacking yard of the PC components is orderly hoisted to a stacking yard by a tower crane or a truck crane according to the construction hoisting sequence, the PC components are separated from the ground by a plurality of skid supports, flexible separators are arranged between the adjacent PC components, and two sides of the stacked PC components on the stacking yard are provided with overturn prevention devices for preventing the PC components from toppling over;

step two: measuring and controlling an axis, a floor line snapping, a horizontal elevation, erecting a precast beam support bent frame, hoisting a precast beam, positioning, fixing, unhooking, correcting, installing and carding anchoring ribs, erecting a precast slab support bent frame, hoisting and fixing a precast slab, binding cast-in-place precast columns, beams and slab steel bars, tamping concrete and maintaining; the PC component is lightly hung and lightly placed in the hoisting process of the PC component, and meanwhile, the plastic gasket is placed at the corrected position of the PC component before installation.

By adopting the technical scheme, the PC members are placed on the skid before being hoisted, and in order to reduce the friction and collision between the adjacent PC members, the flexible separators are arranged between the adjacent PC members, so that the upper parts and the lower parts of the PC members are in contact with the flexible separators to reduce the damage of the PC members; the PC component comprises the precast beam and the precast slab, the PC component is lightly hung in the hoisting process of the PC component, and meanwhile, the plastic gasket is firstly placed at the corrected position of the PC component before installation, so that the collision of the PC component is reduced, the PC component is protected, and the damage of the PC component is reduced in the process of stacking the PC component to hoisting.

The invention is further configured to: and in the second step, the safe hoisting process of the precast beam or the precast slab is as follows: two signal workers are arranged when the precast beam or the precast slab is hoisted, one worker is arranged at the hoisting position of the precast beam, one worker is arranged on a hoisting floor, another worker is provided with a hook when the precast beam or the precast slab is hoisted, 4 workers are provided on the floor for placing the precast beam, when the precast beam or the precast slab is slowly hoisted to a position 0.4m-0.6m away from the ground, an operator at the moment bonds the anti-collision strip on the corner of the precast beam or the precast slab through a transparent adhesive tape, the crane hoisting device continues hoisting after the safety is determined, the hooks are arranged at the positions 1.55 m away from the two sides of the beam.

By adopting the technical scheme, the lifting of the PC component is more stable due to the steel wire ropes distributed in a triangular mode, when a person to be hooked withdraws to a safe area, a signal worker confirms the safety condition around the PC component, commands slow lifting, and slowly lifts to a position 0.4-0.6 m away from the ground, at the moment, the operator bonds the anti-collision strip to the corner of the precast beam or the precast slab through the transparent adhesive tape, so that the PC component is prevented from being damaged in the lifting process, and 4 persons placing the precast beam guide the PC component to descend by hands.

The invention is further configured to: the lifting hook is supporting the back with the rings that set up on precast beam or precast slab, the spacing ring that supplies the rings embedding is seted up to the lifting hook, the lifting hook is established to most advanced in the one end of import, and back in rings entering lifting hook, the lifting hook is worn to be equipped with a plurality of balls through most advanced, the ball is contradicted with rings, the lifting hook is pegged graft in most advanced department and is had the rubber ball, the rubber ball is contradicted with a ball that keeps away from rings farthest.

Through adopting above-mentioned technical scheme, when rings embedding lifting hook's spacing intra-annular, the spacing ring has restricted the removal of rings in the lifting hook, make precast beam or prefabricated plate lift by crane stably, and a rubber ball is pegged graft at the lifting hook pointed end, make when rings shift out from spacing intra-annular extrusion ball move to lifting hook opening direction, and then the extrusion ball, make the ball promote the rubber ball and break away from the lifting hook, the rubber ball reminds operator's rings to shift out from spacing intra-annular this moment, it is great to show that rings shift range is removed in the lifting hook this moment, remind the operator to steadily lift by crane, perhaps withdraw precast beam or the peripheral staff of.

The invention is further configured to: the flexible separator is a cotton gauze layer, the cotton gauze layer extends out of the periphery of the PC component, and a first rubber block is arranged at one extending end of the cotton gauze layer; or the flexible separators are a plurality of second rubber blocks or sleepers.

Through adopting above-mentioned technical scheme, cotton gauze layer has increased the buffer power between the adjacent PC component, and cotton gauze layer extends the periphery of PC component, has increased the guard range of PC component, and setting up of first rubber block has reduced cotton gauze layer and has removed because of the wind, and second rubber block or sleeper have increased the clearance between the adjacent PC component, have protected the PC component.

The invention is further configured to: anti-overturning device is including setting up a plurality of pin at the PC component periphery, each the pin passes through the connecting rod and connects, is located on each side of PC component the connecting rod all extends the both ends of PC component, and is adjacent the mutual dislocation distribution of connecting rod, threaded connection has first threaded rod on the connecting rod, adjacent connecting rod is worn out to first threaded rod and has lock nut, each at the one end threaded connection who wears out on the pin threaded connection has first removal nut, first removal nut is equipped with the rubber pad of contradicting with the PC component outward.

Through adopting above-mentioned technical scheme, the setting of connecting rod links together each pin, threaded connection's first removal nut is convenient for contradict with the PC component of each height on the pin, PC component rubber pad all around has increased the buffer of contradicting between first removal nut and the PC component, reduces the damage of first removal nut to the PC component, first threaded rod and lock nut link together two adjacent connecting rods, the PC component periphery all has the removal of each pin restriction PC component this moment.

The invention is further configured to: the equal threaded connection in both ends of connecting rod has the extension pipe, and is adjacent the one end that the connecting rod was kept away from to the extension pipe is connected through the second threaded rod, the equal threaded connection in both ends of two extension pipes is being worn out to the second threaded rod has the second and removes the nut.

Through adopting above-mentioned technical scheme, the setting of extension pipe makes the pin can restrict the longer PC component of size, increases the application range of preventing overtum equipment.

The invention is further configured to: when the flexible separating pieces are a plurality of second rubber blocks or sleepers, the lower end of the first movable nut is in threaded connection with an annular supporting plate of which the size is larger than that of the first movable nut through the stop rod, and a sponge layer is arranged on the supporting plate.

By adopting the technical scheme, after the first movable nut is abutted to the PC member, the supporting disk is rotated, so that the supporting disk is moved to the lower part of the PC member and supports the PC member, and the horizontal slippage of the PC member is further reduced.

The invention is further configured to: and step two, placing the precast beam in place, lowering the precast beam to a position 0.5m away from the floor, taking down the anti-collision strip by an operator, finely adjusting according to a guide frame and a control line which are positioned in advance, slowing down the lowering after the fine adjustment is finished, walking by two professional operators to guide the crane to descend, observing whether the side line of the superposed beam is aligned with the horizontal positioning line or not by one worker through a plumb when the crane descends to 100mm, and performing hooking and correcting after the precast beam is stabilized.

Through adopting above-mentioned technical scheme, the precast beam of being convenient for after the anticollision strip takes off is put to required position, and the anticollision strip has reduced the collision of precast beam at the in-process that lifts by crane.

The invention is further configured to: in the first step, the stacking place is provided with a rain shielding cloth above the PC component through a stand column frame, and the lower end of the stand column is provided with a balancing weight.

Through adopting above-mentioned technical scheme, the setting of cloth of hiding rain is convenient for the PC component and is stacking the in-process and reduce the contact with the rainwater, and the balancing weight increase stand of stand lower extreme stability.

In conclusion, the invention has the following beneficial effects: the PC component is separated from the ground by a plurality of skid frames, a flexible separator is arranged between adjacent PC components, anti-overturning devices for preventing the PC components from toppling over are arranged on two sides of the stacked PC components in a stacking field, the damage of the PC components is reduced in the stacking process of the PC components at the moment, the PC components are lightly hung and placed in the hoisting process of the PC components, meanwhile, a plastic gasket is placed at the position corrected by the PC components before installation, and the damage of the PC components is reduced in the hoisting process of the PC components.

Drawings

FIG. 1 is a flowchart of a construction method of the present embodiment;

FIG. 2 is a schematic structural diagram of a cotton gauze layer according to the present embodiment;

FIG. 3 is an enlarged structural view of part A in FIG. 2;

FIG. 4 is a schematic structural diagram of the hook according to the present embodiment;

FIG. 5 is a schematic structural diagram of a second rubber block used in the embodiment;

FIG. 6 is a schematic structural diagram of the sleeper according to the present embodiment;

fig. 7 is a schematic structural view of the present embodiment for embodying the rainfly.

Reference numerals: 1. prefabricating a slab; 2. a hook; 21. a limiting ring; 22. a tip; 23. a ball bearing; 24. a rubber ball; 3. a hoisting ring; 4. a cotton gauze layer; 41. a first rubber block; 5. a second rubber block; 6. crossties; 7. an anti-toppling device; 71. a stop lever; 72. a connecting rod; 73. a first threaded rod; 74. locking the nut; 75. a first traveling nut; 751. a rubber pad; 76. lengthening a pipe; 761. a second threaded rod; 762. a second traveling nut; 8. a support disc; 81. a sponge layer; 9. a rain cloth; 91. a column; 92. and a balancing weight.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a construction method for PC member features that the protecting measures for finished PC member must be taken during transportation, stacking and lifting, the steel frame is used for auxiliary transportation, and when the wall plate is transported, the vehicle is started slowly, the speed of vehicle is uniform, and when the road is changed, the speed of vehicle is reduced.

The construction method of the PC component, as shown in FIG. 1, comprises the following steps:

the method comprises the following steps: the yard of PC components is lifted to the stacking field by a tower crane or a truck crane in order according to the construction lifting sequence, the PC components are separated from the ground by a plurality of skid supports, flexible separators are arranged between adjacent PC components, and the stacking field is provided with overturn-preventing devices for preventing the PC components from toppling over at two sides of the stacked PC components.

Before the PC component is hoisted, the PC component is placed on the skid firstly, the upper end and the lower end of the PC component are provided with the flexible separators, the PC component is protected, the toppling prevention device reduces toppling of the PC component, the PC component is further protected, and damage to the PC component is reduced in the stacking process of the PC component.

As shown in fig. 2, the flexible separator is a cotton gauze layer 4, the cotton gauze layer 4 extends out of the periphery of the PC member, and a first rubber block 41 is arranged at the extended end of the cotton gauze layer 4, at this time, the impact and abrasion between adjacent PC members are increased by the cotton gauze layer 4, and the cotton gauze layer 4 extends out of the PC member, so as to protect the periphery of the PC member; or the flexible separator is a plurality of second rubber blocks 5 or sleepers 6.

As shown in fig. 2 and 3, the overturn preventing device 7 includes a plurality of bars 71 disposed at the periphery of the PC member, and the respective bars 71 are connected by a connecting rod 72, the connecting rod 72 being located at a side of the bar 71 facing away from the PC member and at a lower end of the bar 71. The connecting rods 72 on each side face of the PC component extend out of two ends of the PC component, the adjacent connecting rods 72 are distributed in a staggered mode, a first threaded rod 73 is connected to each connecting rod 72 in a threaded mode, the first threaded rod 73 penetrates out of the adjacent connecting rods 72, one end of the penetrating end of the first threaded rod 73 is connected with a locking nut 74 in a threaded mode, and at the moment, the locking nut 74 connects the two adjacent connecting rods 72 together. Each of the blocking bars 71 is threadedly connected with a first moving nut 75, the number of the first moving nuts 75 is the same as the number of stacked PC members, the first moving nuts 75 are screwed in from the upper end of the blocking bar 71, and a rubber pad 751 which is abutted against the PC members is arranged outside the first moving nuts 75.

As shown in fig. 2, the PC member is provided with a plurality of stop bars 71 around its periphery to limit the horizontal displacement of the PC member, and the rubber pads 751 increase the damping of interference between the first moving nut 75 and the PC member, thereby reducing the damage of the PC member by the first moving nut 75.

As shown in fig. 5 and 6, when the flexible partition is a plurality of second rubber blocks 5 or sleepers 6, the stop bar 71 is screwed with an annular support plate 8 having a size larger than that of the first moving nut 75 at the lower end of the first moving nut 75, the upper end surface of the support plate 8 abuts against the PC member, and a sponge layer 81 is provided at the abutting position. After the first moving nut 75 contacts with the PC member, the supporting plate 8 is rotated to move the supporting plate 8 to the lower side of the PC member, and the periphery of the PC member is contacted by the supporting plate 8, thereby further reducing the horizontal sliding of the PC member.

As shown in fig. 3, when the stacked PC components have a large length, two ends of the connecting rod 72 are both screwed with extension pipes 76, one end of each adjacent extension pipe 76 far from the connecting rod 72 is connected by a second threaded rod 761, and two ends of each second threaded rod 761 penetrating through the two extension pipes 76 are both screwed with second movable nuts 762. When connecting rod 72 does not need to be lengthened, elongated tube 76 slides into connecting rod 72 without abutting the PC member, and when connecting rod 72 needs to be lengthened, elongated tube 76 slides out of connecting rod 72, at which time elongated tube 76 is fixed by second threaded rod 761 and second traveling nut 762, which is now the longest length that elongated tube 76 has moved out of connecting rod 72.

As shown in fig. 1, step two: measuring and controlling an axis, a floor line snapping, a horizontal elevation, erecting a precast beam support bent frame, hoisting a precast beam, positioning, fixing, unhooking, correcting, installing and carding anchoring ribs, erecting a precast slab support bent frame, hoisting and fixing a precast slab, binding cast-in-place precast columns, beams and slab steel bars, tamping concrete and maintaining; the PC component is lightly hung and lightly placed in the hoisting process of the PC component, and meanwhile, the plastic gasket is placed at the corrected position of the PC component before installation. The damage caused by collision of the PC component in the hoisting process is reduced, and the application range of the overturn preventing device is enlarged.

As shown in fig. 1, in the second step, the precast beam or precast slab is safely hoisted: two signal workers are arranged when the precast beam or the precast slab is hoisted, one worker is arranged at the hoisting position of the precast beam and one worker is arranged on a hoisting floor, another worker is provided with a hook when the precast beam or the precast slab is hoisted, 4 workers are provided on the floor for placing the precast beam and slowly hoist to the position 0.4m-0.6m away from the ground, and at the moment, an operator adheres the anti-collision strip to the corner of the precast beam or the precast slab through a transparent adhesive tape, so that the collision of the precast beam in the hoisting process is further protected. And after the tower crane hoisting device determines safety, the crane continues to hoist, the lifting hooks are arranged at 1.55 meters on two sides of the beam, the steel wire ropes are arranged in an equilateral triangle, and the distribution of the triangle enables the hoisting of the precast beam to be stable. The precast slabs are lifted in the same process as the precast beams except that the steel cables are positioned at four corners of the precast slabs to form a cone (see fig. 2).

As shown in fig. 2, when the lifting hook 2 is unstable during lifting, the lifting ring 3 can move out of the limiting ring 21, and at this time, the lifting ring 3 can slide out of the lifting hook 2, so that after the lifting hook 2 is abutted against the lifting ring 3 arranged on the precast beam or precast slab 1, the lifting hook 2 is provided with the limiting ring 21 (as shown in fig. 4) for embedding the lifting ring 3, so that the lifting ring 3 is stably connected with the lifting hook 2 during lifting of the lifting hook 2; the lifting hook 2 is set to be the pointed end 22 (as shown in fig. 4) at the one end of the inlet, after the lifting ring 3 enters the lifting hook 2, the lifting hook 2 is provided with a plurality of balls 23 through the pointed end 22 in a penetrating manner, the balls 23 are abutted against the lifting ring 3, the balls 23 are abutted against the part of the lifting ring 3 higher than the limiting ring 21, the lifting hook 2 is inserted into the rubber ball 24 at the pointed end 22, and the rubber ball 24 is abutted against the ball 23 farthest away from the lifting ring 3.

As shown in fig. 2, when the hoisting ring 3 is moved out of the limit ring 21, the extrusion ball 23 moves towards the opening of the lifting hook 2, and further the extrusion ball 23 presses the ball 23, so that the ball 23 pushes the rubber ball 24 to separate from the lifting hook 2, and at the moment, the rubber ball 24 reminds an operator that the hoisting ring 3 is moved out of the limit ring 21, which indicates that the hoisting ring 3 has a large moving range in the lifting hook 2, reminds the operator to stably hoist or evacuate workers around the precast beam or precast slab 1.

As shown in fig. 7, after the PC members are stacked, in the first step, a rain shielding cloth 9 is erected above the PC members in the stacking field through an upright post 91 to reduce contact between the PC members and rainwater, and a counterweight 92 is arranged at the lower end of the upright post 91 to reduce movement of the upright post 91 in the using process.

And step two, placing the precast beam in place, lowering the precast beam to a position 0.5m away from the floor, taking down the anti-collision strip by an operator, finely adjusting according to a guide frame and a control line which are positioned in advance, slowing down the lowering after the fine adjustment is finished, walking by two professional operators to guide the crane to descend, observing whether the side line of the superposed beam is aligned with the horizontal positioning line or not by one worker through a plumb when the crane descends to 100mm, and performing hooking and correcting after the precast beam is stabilized.

Because the precast beam and the precast slab are in a manually-held falling mode, operators are required to strictly perform falling according to positioning in the process of falling of the precast beam and the precast slab. In the hoisting process, project management personnel and labor management personnel are required to supervise at a side station, after hoisting is finished, the management personnel of both parties are required to jointly check whether the positioning line deviates from the positioning line, the plumb and the guiding ruler are adopted for detection, if the quality control requirement is exceeded, the management personnel need to order the operating personnel to adjust the superposed beam, if the error is small, the adjustment can be completed by adopting a crowbar, and if the error is large, the superposed beam needs to be hoisted and placed again until the superposed beam passes the inspection.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A construction method of a PC component is characterized by comprising the following steps:

step two: the method comprises the following steps of measuring a control axis, snapping a line on a floor, measuring a horizontal elevation, erecting a PC component support bent, hoisting, positioning, fixing, unhooking and correcting the PC component, installing and carding an anchoring rib, binding a cast-in-place prefabricated PC component reinforcing steel bar, and carrying out concrete pouring and curing; the PC component is lightly hung and lightly placed in the hoisting process of the PC component, and meanwhile, the plastic gasket is placed at the corrected position of the PC component before installation;

in the second step, the safe hoisting process of the PC component is as follows: two signal workers are arranged when a PC component is hoisted, one worker is arranged at the hoisting position of the PC component, one worker is arranged on a hoisting floor, another hanger is arranged when the PC component is hoisted, 4 workers for placing the PC component are arranged on the hoisting floor, when the PC component is slowly hoisted to a position 0.4-0.6 m away from the ground, an operator adheres an anti-collision strip to the corner of the PC component through a transparent adhesive tape at the moment, hoisting is started after a tower crane or an automobile crane is determined to be safe, lifting lugs are arranged at the positions 1.55 meters on the two sides of the beam-shaped PC component, and a steel wire rope is arranged in an equilateral;

after the lifting hook (2) is abutted to a lifting ring (3) arranged on a PC component, a limiting ring (21) for embedding the lifting ring (3) is arranged on the lifting hook (2), a tip (22) is arranged at one end of the lifting hook (2) at an inlet, after the lifting ring (3) enters the lifting hook (2), a plurality of balls (23) penetrate through the tip (22) of the lifting hook (2), the balls (23) are abutted to the lifting ring (3), rubber balls (24) are inserted into the lifting hook (2) at the tip (22), and the rubber balls (24) are abutted to one ball (23) farthest from the lifting ring (3);

the flexible separator is a cotton gauze layer (4), the cotton gauze layer (4) extends out of the periphery of the PC component, and a first rubber block (41) is arranged at one extending end of the cotton gauze layer; or the flexible separators are a plurality of second rubber blocks (5) or sleepers (6);

the overturn preventing device (7) comprises a plurality of stop rods (71) arranged on the periphery of a PC (personal computer) component, the stop rods (71) are connected through connecting rods (72), the connecting rods (72) positioned on the side surfaces of the PC component extend out of the two ends of the PC component, the adjacent connecting rods (72) are distributed in a staggered mode, a first threaded rod (73) is connected onto each connecting rod (72) in a threaded mode, the first threaded rod (73) penetrates out of the adjacent connecting rod (72), a locking nut (74) is connected onto one penetrating end of each first threaded rod (73) in a threaded mode, a first moving nut (75) is connected onto each stop rod (71) in a threaded mode, and a rubber pad (751) abutting against the PC component is arranged outside each first moving nut (75);

the both ends equal threaded connection of connecting rod (72) has extension pipe (76), and is adjacent extension pipe (76) keep away from the one end of connecting rod (72) and pass through second threaded rod (761) and connect, the equal threaded connection in both ends of wearing out two extension pipes (76) of second threaded rod (761) has second removal nut (762).

2. The construction method of the PC member according to claim 1, wherein when the flexible partition is a plurality of second rubber blocks (5) or sleepers (6), the stop lever (71) is screw-connected with an annular support plate (8) having a size larger than that of the first moving nut (75) at a lower end of the first moving nut (75), and the support plate (8) is provided with a sponge layer (81).

3. The construction method of the PC component according to claim 2, wherein in the second step, the PC component is in place, when the PC component is lowered to a position 0.5m away from the floor, an operator takes down the anti-collision strip, fine adjustment is performed according to the pre-positioned guide frame and the control axis, the lowering is slowed down after the fine adjustment is completed, two professional operators perform walking guided landing by hands, when the operator lands at 100mm, one worker vertically observes whether the side line of the overlapped PC component is aligned with the horizontal positioning line, and hook picking and correction can be performed after the PC component is stabilized.

4. The construction method of the PC member according to claim 1, wherein the stacking site in the first step is provided with a waterproof cloth (9) over the PC member by means of a column (91) provided with a weight block (92) at a lower end thereof.