CN105804396B - A kind of non-type, template system precast stair bench and construction can be had enough to meet the need - Google Patents

Abstract

A prefabricated stair section and construction method with non-stereotyped and turnable formwork system. Direct fit is installed on the bottom form, a set of combined fixing frames is fixed on the stair board along the horizontal direction, and the distance between each of the combined fixing frames along the vertical direction of the stair board is the same. The present invention has carried out technical summary and innovation, adopts non-stereotyped, turnable formwork system, prefabricates the stair section at the construction site, effectively shortens the construction period, reduces the construction cost, and reduces on-site construction waste under the premise of ensuring the quality of the concrete forming of the stair section emission.

Description

A non-stereotyped, revolvable formwork system prefabricated stair steps and construction method

technical field

The invention relates to the field of building construction, in particular to a prefabricated stair section of a non-stereotyped, turnable formwork system and a construction method.

Background technique

At present, reinforced concrete stair steps in construction projects generally adopt the cast-in-place method. The formwork support is complicated and greatly affected by external environmental factors. channel, which affects the construction period to a certain extent.

Factory prefabricated stair sections have high production efficiency and easy control of component quality, but the initial equipment, plant and other investment and operating costs are high. Without mandatory promotion policies or subsidies, the number and scale of prefabricated component factories cannot meet the needs of existing projects .

Contents of the invention

In order to solve the problems in the prior art that the appearance molding quality is difficult to guarantee, it takes a long time for maintenance, and the production cost is high, the present invention proposes a prefabricated stair section and construction method of an unshaped, turnable formwork system.

Technical scheme of the present invention is realized like this:

A prefabricated stair section and construction method with non-stereotyped and turnable formwork system. Direct fit is installed on the bottom form, a set of combined fixing frames is fixed on the stair board along the horizontal direction, and the distance between each of the combined fixing frames along the vertical direction of the stair board is the same.

The combined fixing frame includes: rectangular steel main flute, short square steel main flute, 90° angle iron secondary flute, long angle iron connecting strut, short angle iron connecting strut, short angle iron pressing plate, long angle iron pressing plate, Angle iron connectors, L-shaped bolts, U-shaped bolts A, U-shaped bolts B, and flat-shaped bolts, the rectangular steel main flute includes a horizontal section and an inclined section, and the 90° angle iron secondary flute is fixed to the On the step plate, the rectangular steel main flute is fixed horizontally on the 90° angle iron secondary flute on both sides of the step plate, and the U-bolt A passes through the rectangular steel main flute The opening and the 90° angle iron secondary flute are fixed with the long angle iron pressing plate through nuts, the U-bolt A is connected to the rectangular steel main flute and the 90° angle iron secondary flute is connected to the Wooden wedges are arranged between the long angle iron platens, and vertical wooden piles are arranged on the other side of the stair slab, and the rectangular steel main flute is fixed on the wooden piles. The rectangular steel main flute is horizontal and opposite in direction; the end of the short square steel main flute is fixed to the rectangular steel main flute through an angle iron connector and the short angle iron connecting strut, and the short angle iron The connecting struts are fixed on the main rectangular steel flute through U-shaped bolts A, and the short main square steel flute is parallel to the inclined section of the rectangular steel main flute on the flat side of the stair slab. The short square steel main flute and the oblique section of the rectangular steel main flute are provided with wooden wedges and fixed square wood, and the square wood is fixed by L-shaped bolt pin shaft threads, and the other end of the short square steel main flute The tail part of the horizontal section of the rectangular steel main flute is fixed by a long angle iron connecting strut, and the long angle iron connecting strut is fixed to the rectangular steel main flute by a U-shaped bolt B.

A group of L-shaped bolts are fixed on the rectangular steel main flute by bolts, and the rectangular steel main flute is fixed to wooden piles on the flat side of the stair slab through L-shaped bolts, and the L-shaped bolts are fixed by wooden piles. Screws are fixed with the stakes.

The U-shaped bolt A includes a short-angle iron platen and a U-shaped lead screw, the U-shaped bolt B includes a long-angle iron platen and a U-shaped lead screw, and the U-shaped bolt A passes through the rectangular steel main flute. After the holes are opened and the 90° angle iron secondary flute is fixed with the long angle iron pressing plate through nuts, the U-bolt A is connected to the rectangular steel main flute and the 90° angle iron secondary flute is connected to the long angle iron plate. Wooden wedges are set between the angle iron platens.

The main flute of the rectangular steel and the main flute of the short square steel are square steel with opposite perforations, the secondary flute of the 90° angle iron is two L-shaped angle steels with holes, and the short angle iron connects the struts It is an angle steel with two openings at one end, the two branches have elongated holes, the L-shaped bolt is an angle steel with thread on one side, and the U-shaped bolt A and the U-shaped bolt B are U-shaped bolts with different specifications. Shaped screw.

A non-stereotyped, revolvable formwork system prefabricated stair steps and construction method, the steps comprising:

(1) Formwork system production;

(2) Formwork system installation;

(3) When binding steel bars, operate on the pedestal when binding;

(4) For the installation of embedded parts, reserve embedded pin holes, hoisting holes, and demoulding hooks. The reserved holes are made of PVC pipes, and the two ends are pasted with tape; or the reserved holes are used in wooden boxes, and temporarily fixed with wood screws On the formwork on both sides, after the concrete is poured, take out the wood screws and chisel out the wooden box;

(5) Acceptance, mold sealing, reinforcement, install the side formwork of the ladder section and two end forms, and use the rectangular steel main flute 4 pair of tension bolts to reinforce;

(6) For concrete pouring, cover both sides of the formwork to prevent concrete pouring to the reinforcement fittings on both sides, pouring and curing concrete;

(7) Demoulding; remove the ladder formwork and end formwork for turnover use;

(8) Lifting and stacking.

A construction method for pre-stair section formwork of non-stereotyped and turnable formwork system, the installation steps of the formwork system include:

(1) Make a concrete pedestal or a combined pedestal of square wood and formwork;

(2) According to the size of the stair section, select the template for cutting and sawing, and the size of the bottom mold must be strictly cut;

(3) Fix the cut and sawed bottom mold with nails on the constructed pedestal;

(4) Assemble the tread plate into a whole and temporarily fix it;

(5) Use wood screws to fix the formwork support 90° angle iron corrugated step on the stepped board, the bottom part is 150mm from the bottom, the top part is 200mm from the top, and the distance between the middle parts and the upper and lower parts is equal , each row of fittings is guaranteed to be on the same level;

(6) Put the rectangular steel main flute on the fixed 90° angle iron secondary flute, and then use the method in step (5) to fix the other half of the 90° angle iron secondary flute on the step template; 90° Each part of the angle iron secondary flute and the rectangular steel main flute should be tightly attached, and each node should be fastened with a long angle iron platen, U-shaped bolt A and a wooden wedge;

(7) Use short square steel main flute, long angle iron connecting struts, short angle iron connecting struts, U-shaped bolts B, short angle iron pressure plates, and inline bolts to assemble the fixing system at the end of the ladder plate, and the tread surface The template assembly is completed;

(8) Use rectangular steel main flute, long angle iron connecting strut, short angle iron connecting strut, short angle iron pressing plate, U-shaped bolt B to assemble the side formwork of the ladder section, and the rectangular steel main flute on both sides should be kept On the same level and reliably connected as a whole;

(9) Saw two end molds according to the size of the drawing for use, clean the ladder formwork and end molds made through steps (7) and (8), and apply release agent; The formwork of the supporting steps is hoisted to the pedestal and fixed temporarily.

The beneficial effects of the present invention are:

1. The stair sections are prefabricated at the construction site in advance and produced in batches. The stair sections can be mass-produced in advance of the main structure at the construction site. Compared with the traditional cast-in-place stair sections, it can ensure the quality of concrete pouring and appearance molding, and reduce labor input and materials. Waste, reduce construction costs, reduce on-site construction waste discharge; compared with factory prefabricated ladder production, reduce equipment and site investment, save component transportation process, and reduce transportation costs.

2. The formwork support system is simple and quick to manufacture, has strong adaptability to different stair sections, and the wooden formwork is easy to replace. The formwork support system is made of conventional section steel, which is convenient for on-site processing and quick to install; non-standard design, suitable for stair sections with different number of steps, and can be fine-tuned according to the size of the steps. The steps of the steps are made of wood formwork, which is easy to replace partly or as a whole.

3. The concrete of the stair section is poured and maintained by conventional techniques. The concrete of the stair section can be poured according to the needs, using on-site personnel and equipment, and avoiding high temperature and heavy rain periods; after the pouring is completed, it can be watered and maintained naturally, without complicated steam curing. process.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the combined fixed mount of the present invention;

Fig. 2 is the overall schematic diagram of the present invention;

Fig. 3 is the structural representation of rectangular steel main flute of the present invention;

Fig. 4 is the structural representation of short square steel main flute of the present invention;

Fig. 5 is the structural representation of L type bolt of the present invention;

Fig. 6 is the structural representation of long angle iron connection strut of the present invention;

Fig. 7 is the structural representation of short angle iron connection strut of the present invention;

Fig. 8 is the structural representation of short angle iron platen of the present invention;

Fig. 9 is a schematic structural view of a U-shaped lead screw of the present invention;

Fig. 10 is the structural representation of U-bolt A of the present invention;

Fig. 11 is a schematic structural diagram of a U-bolt B of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, a prefabricated stair section and construction method of a non-stereotyped, revolvable formwork system, its composition includes: a pedestal 16, a bottom form 15 fixed on the pedestal, an integral stair slab assembled by a single tread plate 6, Combined fixing frame 14, described stair plate is vertically fitted on the described bottom mold 15, and a group of described combination fixing frame 14 is fixed on described stair plate along horizontal direction, and each described combination fixing frame is along The vertical distances of the stair boards are the same.

The combined fixing frame includes: rectangular steel main flute 1, short square steel main flute 2, 90° angle iron secondary flute 3, long angle iron connecting strut 4, short angle iron connecting strut 5, short angle iron pressing plate 7 , long angle iron pressing plate 8, angle iron connector 9, L-shaped bolt 10, U-shaped bolt A11, U-shaped bolt B 12, inline bolt 13, and the rectangular steel main flute 1 includes a horizontal section and an inclined section, The 90° angle iron secondary flute 3 is fixed on the step plate 6 at intervals, and the rectangular steel main flute 1 is horizontally on the 90° angle iron secondary flute 3 on both sides of the step plate 6 Fixing, the U-bolt A 11 passes through the opening of the rectangular steel main flute 1 and the 90° angle iron secondary flute 3, and is fixed with the long-angle iron pressing plate 8 by nuts, and the U-bolt Wooden wedges 17 are all set between A 11 and the rectangular steel main flute 1 and the 90° angle iron secondary flute 3 and the long angle iron pressing plate 8, and vertical wooden wedges are arranged on the other side of the stair board. pile, the rectangular steel main flute 1 is fixed on the wooden pile, and the two rectangular steel main flutes 1 on both sides of the stair slab are horizontal and in opposite directions; the ends of the short square steel main flute 2 The angle iron connecting piece 9 and the short angle iron connecting strut 5 are fixed to the rectangular steel main flute 1, and the short angle iron connecting strut 5 is fixed to the rectangular steel main flute by U-shaped bolts A 1, the short square steel main flute 2 is parallel to the inclined section of the rectangular steel main flute 1 on the flat side of the stair slab, and between the short square steel main flute 2 and the rectangular steel main flute 1 The inclined section is provided with a wooden wedge 19 and a fixed square wood 20, and the square wood is fixed by an L-shaped bolt pin shaft thread, and the other end of the short square steel main flute 2 is connected to the horizontal section of the rectangular steel main flute 1. The tail part of the steel pipe is fixed by a long angle iron connecting strut 4, and the long angle iron connecting strut 4 is fixed to the main rectangular steel flute by a U-bolt B.

A set of L-shaped bolts 10 is fixed on the rectangular steel main flute 1 by bolts, and the rectangular steel main flute 1 is fixed to wooden piles located on the flat side of the stair slab through L-shaped bolts 10. The L Type bolts are secured to the stakes by wood screws.

The U-shaped bolt A includes a short-angle iron platen 7 and a U-shaped lead screw, the U-shaped bolt B includes a long-angle iron platen 8 and a U-shaped lead screw, and the U-shaped bolt A passes through the rectangular steel main The opening of the flute and the 90° angle iron secondary flute are fixed with the long angle iron pressing plate by nuts, and the U-bolt A is connected with the rectangular steel main flute and the 90° angle iron secondary flute with the Wood wedges 17 are all set between the long angle iron platens.

The main flute of the rectangular steel and the main flute of the short square steel are square steel with opposite perforations, the secondary flute of the 90° angle iron is two L-shaped angle steels with holes, and the short angle iron connects the struts It is an angle steel with two openings at one end, the two branches have elongated holes, the L-shaped bolt is an angle steel with thread on one side, and the U-shaped bolt A and the U-shaped bolt B are U-shaped bolts with different specifications. Shaped screw.

A non-stereotyped, revolvable formwork system prefabricated stair steps and construction method, the steps comprising:

(1) Formwork system production;

(2) Formwork system installation;

(3) When binding steel bars, operate on the pedestal when binding;

(4) For the installation of embedded parts, reserve embedded pin holes, hoisting holes, and demoulding hooks. The reserved holes are made of PVC pipes, and the two ends are pasted with tape; or the reserved holes are used in wooden boxes, and temporarily fixed with wood screws On the formwork on both sides, after the concrete is poured, take out the wood screws and chisel out the wooden box;

(5) Acceptance, mold sealing, reinforcement, install the side formwork of the ladder section and two end forms, and use the rectangular steel main flute 4 pair of tension bolts to reinforce;

(6) For concrete pouring, cover both sides of the formwork to prevent concrete pouring to the reinforcement fittings on both sides, pouring and curing concrete;

(7) Demoulding; remove the ladder formwork and end formwork for turnover use;

(8) Lifting and stacking.

A non-stereotyped, turnable formwork system pre-stair step formwork construction method, characterized in that: the formwork system installation steps include:

(1) Make a concrete pedestal or a combined pedestal of square wood and formwork;

(2) According to the size of the stair section, select the template for cutting and sawing, and the size of the bottom mold must be strictly cut;

(3) Fix the cut and sawed bottom mold with nails on the constructed pedestal;

(4) Assemble the tread plate into a whole and temporarily fix it;

(5) Use wood screws to fix the formwork support 90° angle iron corrugated step on the stepped board, the bottom part is 150mm from the bottom, the top part is 200mm from the top, and the distance between the middle parts and the upper and lower parts is equal , each row of fittings is guaranteed to be on the same level;

(6) Put the rectangular steel main flute on the fixed 90° angle iron secondary flute, and then use the method in step (5) to fix the other half of the 90° angle iron secondary flute on the step template; 90° Each part of the angle iron secondary flute and the rectangular steel main flute should be tightly attached, and each node should be fastened with a long angle iron platen, U-shaped bolt A and a wooden wedge;

(7) Use short square steel main flute, long angle iron connecting struts, short angle iron connecting struts, U-shaped bolts B, short angle iron pressure plates, and inline bolts to assemble the fixing system at the end of the ladder plate, and the tread surface The template assembly is completed;

(8) Use rectangular steel main flute, long angle iron connecting strut, short angle iron connecting strut, short angle iron pressing plate, U-shaped bolt B to assemble the side formwork of the ladder section, and the rectangular steel main flute on both sides should be kept On the same level and reliably connected as a whole;

(9) Saw two end molds according to the size of the drawing for use, clean the ladder formwork and end molds made through steps (7) and (8), and apply release agent; The formwork of the supporting steps is hoisted to the pedestal and fixed temporarily.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (5)

1. a kind of non-type, can have enough to meet the need template system precast stair bench template, its composition includes：Pedestal, it is fixed on pedestal Bed die, single step plate be combined into overall staircase boards, combination fixed mount, it is characterised in that：The staircase boards coordinate peace vertically It is attached on the bed die, fixed mount is combined described in one group and is fixed in the horizontal direction on the staircase boards, each combination is solid Determine identical along the distance of the staircase boards vertical direction between frame, the combination fixed mount includes：Rectangular steel master is stupefied, short square steel master Stupefied, secondary stupefied, the long angle bar connection strut of 90 ° of angle bar, clip connection strut, clip pressing plate, long angle bar pressing plate, angle bar connection Part, L-type bolt, U-bolt A, U-bolt B, yi word pattern bolt, the rectangular steel master is stupefied including horizontal segment and tilting section, described 90 ° of angle bar time are stupefied to be fixed on the step plate every step, and the rectangular steel master is stupefied horizontally in the institute of the step plate both sides The stupefied upper fixation of 90 ° of angle bar time is stated, the U-bolt A is stupefied rear logical through the stupefied perforate of the rectangular steel master and 90 ° of angle bar time Cross nut to fix with the long angle bar pressing plate, the U-bolt A and the stupefied and institute of the rectangular steel master stupefied and described 90 ° of angle bar time State and be respectively provided with timber wedge between long angle bar pressing plate, vertical timber is set in the staircase boards opposite side, the rectangular steel master is stupefied solid Determine onto the timber, the rectangular steel master described in two of the staircase boards both sides is stupefied horizontal and in opposite direction；The short square steel Main stupefied end connects strut and the stupefied fixation of rectangular steel master, the clip connection by angle bar connector and the clip Strut by U-bolt A be fixed on the rectangular steel master it is stupefied on, the short square steel master is stupefied with the length of the flat side of the staircase boards The stupefied tilting section of square steel master is parallel, in stupefied being provided with wooden wedge and consolidate with the stupefied tilting section of rectangular steel master of the short square steel master The fixed lumps of wood, the lumps of wood are fixed by L-type bolt pin shaft thread, the stupefied other end of the short square steel master and the rectangular steel master The afterbody of stupefied horizontal segment connects strut by long angle bar and fixed, the long angle bar connection strut by U-bolt B with it is described rectangular The stupefied fixation of steel master.

2. non-type according to claim 1, template system precast stair bench template can be had enough to meet the need, it is characterised in that：Institute State rectangular steel master it is stupefied on be bolted L-type bolt described in one group, the rectangular steel master it is stupefied by L-type bolt with positioned at described The timber of the flat side of staircase boards is fixed, and the L-type bolt is fixed by wood screw and the timber.

3. non-type according to claim 1, template system precast stair bench template can be had enough to meet the need, it is characterised in that：Institute Stating U-bolt A includes clip pressing plate and U-shaped leading screw, and the U-bolt B includes long angle bar pressing plate and U-shaped leading screw, described U-shaped Bolt A is fixed after passing through the stupefied perforate of the rectangular steel master and 90 ° of angle bar time stupefied by nut and the long angle bar pressing plate, The U-bolt A and rectangular steel master stupefied and described 90 ° of angle bar time are stupefied is respectively provided with timber wedge between the long angle bar pressing plate.

4. non-type according to claim 1, template system precast stair bench template can be had enough to meet the need, it is characterised in that：Institute To state that rectangular steel master is stupefied, the short square steel master is stupefied be that 90 ° of angle bar time are stupefied with the square steel to perforation be two perforates L-shaped Angle steel, the clip connection strut are the angle steel of two perforates in one end, and described two have got out elongate holes, the L-type bolt For the threaded angle steel in one side, the U-bolt A and the U-bolt B U-shaped leading screw that to be specification different.

5. a kind of non-type, the construction that template system precast stair bench template can be had enough to meet the need, it is characterised in that：Its step bag Include：

（1）Template system makes；

（2）Template system is installed；

（3）Reinforcing bar colligation, operated on pedestal during colligation；

（4）Installation of embedded parts, set aside pre-embedded pin shaft hole, hole for hoist, demoulding suspension hook, preformed hole use PVC, both ends adhesive tape Paste；Or the sub- preformed hole of tub is used, it is temporarily fixed on wood screw on two side templates, after concreting is complete, takes out wood Screw simultaneously chisels out tub；

（5）Examination, Feng Mo, reinforcing, bench side form and two end moulds are installed, and reinforced using stupefied 4 split bolt of rectangular steel master；

（6）Concreting, blocked in template both sides, prevent concreting to the reinforcing fitting of both sides, poured, conserve and mix Solidifying soil；

（7）The demoulding；Bench template and end mould are removed, is used in turn；

（8）Lifting, stack；

The step（2）In template system installation it is further comprising the steps of：

（1）Make concrete pedestal or the lumps of wood and form assembly pedestal；

（2）Sanction saw is carried out according to the size selection template of stair bench, the size of bed die need to strictly be cut；

（3）On the pedestal constructed, the bed die for cutting out sawed is nailed；

（4）Step plate is combined into entirety, and fixed temporarily；

（5）It is fixed on the step plate spelled using wood screw every step on step plate shuttering supporting 90 ° of angle bar time are stupefied, bottom Accessory is away from bottom 150mm, and away from top 200mm, middle part accessory apart from equal, ensures top accessory away from upper and lower accessory per row of accessories In same level；

（6）Rectangular steel master it is stupefied be shelved on 90 ° of angle bar having fixed time it is stupefied on, then using step（5）In method 90 ° Time stupefied second half of angle bar, which is fixed on, marks time in template；90 ° of stupefied each positions stupefied with rectangular steel master of angle bar time will be adjacent to, and be used Long angle bar pressing plate, U-bolt A and timber wedge are tight each node bolt；

（7）Using short square steel master is stupefied, long angle bar connection strut, clip connection strut, U-bolt B, clip pressing plate, a word The fixed system of type bolted fittings assembly gangboard end, step surface template assembly are completed；

（8）Using rectangular steel master is stupefied, long angle bar connection strut, clip connection strut, clip pressing plate, U-bolt B are assembled into Bench side form, the rectangular steel master of both sides is stupefied will to be maintained at same level and reliably connect into an entirety；

（9）It is stand-by by the sawed two pieces of ends mould of drawing size, through step（7）, step（8）Manufactured bench template and end mould cleaning Totally, brushing releasing agent；Step（7）Middle support bench template is hung on pedestal, and is fixed temporarily.