CN113737821A - Cutting slide-resistant pile plastering-free attached formwork construction method - Google Patents
Cutting slide-resistant pile plastering-free attached formwork construction method Download PDFInfo
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- CN113737821A CN113737821A CN202110852360.4A CN202110852360A CN113737821A CN 113737821 A CN113737821 A CN 113737821A CN 202110852360 A CN202110852360 A CN 202110852360A CN 113737821 A CN113737821 A CN 113737821A
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- template
- rubber pad
- pile
- slide
- operating rod
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The application relates to a cutting slide-resistant pile plastering-free attached form supporting construction method, which comprises the following steps: s1 construction preparation, S2 positioning and lofting, S3 pile hole excavation, S4 retaining wall construction, S5 hole acceptance inspection, S6 attached template installation, S7 pouring of anti-slide pile concrete, S8 crushing and chiseling out the retaining wall, and S9 form removal. This application is through setting up the inserted form template, and it has smooth moulded die cavity face to make the section surface that exposes of pouring the friction pile reach the effect of clear water concrete, with the roughness and the outward appearance degree of guaranteeing the section surface that exposes of friction pile, and the natural feel after the concrete shaping can regard as the veneer, need not to plaster, saves the expense and the time of setting up operation scaffold frame and plastering.
Description
Technical Field
The application relates to the field of cutting slide-resistant piles, in particular to a cutting slide-resistant pile plastering-free attached formwork construction method.
Background
The anti-slide pile is characterized in that a pile body is deeply inserted into a rock-soil body, and the slide force of a slide body is resisted by means of the strong deformation resistance of the pile body, so that the safety of a side slope is guaranteed. The anti-slide pile has the advantages of small excavation surface, small masonry volume, flexible arrangement position, high construction speed, good reinforcing effect and the like, and is widely applied to the fields of water conservancy, highways, railways, constructional engineering and the like.
In order to exert the resistance function of the slide-resistant pile as much as possible in the construction of the slide-resistant pile, the slide-resistant pile with a rectangular cross section is often adopted. Because the mechanical pore-forming difficulty of the rectangular hole is high, manual hole digging is usually adopted in actual construction.
The concrete construction comprises the following steps: firstly, each section of pile hole protecting wall is installed, then manual hole digging is carried out, a reinforcement cage is placed after pile hole forming is finished, pile body concrete is poured, after concrete curing is qualified, the protecting wall with the surface bonded with the pile body is chiseled and broken, and finally, plastering is carried out on the surface of the exposed section of the anti-slide pile after forming to ensure the surface flatness of the anti-slide pile.
In view of the above-mentioned related technologies, the inventor believes that the plastering layer is generally combined with the pile body and is easily separated from the pile body, thereby affecting the surface flatness and appearance of the slide-resistant pile.
Disclosure of Invention
In order to ensure good surface flatness of the slide-resistant pile, the application provides a cutting slide-resistant pile plastering-free attached formwork construction method.
The application provides a cutting friction pile exempts from to plaster attached form formwork construction method adopts following technical scheme:
a cutting slide-resistant pile plastering-free attached formwork construction method comprises the following steps:
s1, construction preparation;
s2, determining the site, control point and elevation of the slide-resistant pile;
s3, excavating pile holes;
s4, wall protection construction: the construction retaining wall is timely constructed along with excavation, and the inner surface of the formed retaining wall is straight;
s5, checking and accepting the formed holes;
s6, mounting the attached template: the attached template comprises four template units, and opposite surfaces of the four template units surround to form a mold cavity for pouring the slide-resistant pile; the template unit comprises a first template fixedly connected with the inner surface of the protective wall, a second template positioned on one side of the first template far away from the protective wall and a rubber pad positioned on one side of the second template far away from the first template, wherein the rubber pad covers the inner surface of the second template;
the specific installation process is as follows: a rubber pad is attached to the surface of the second template in advance; then fixing the first template on the inner surface of the protective wall, ensuring that the plane of the first template is in a vertical plane, and then connecting the second template with the first template;
s7, pouring anti-slide pile concrete;
s8, after the cut earthwork is excavated, breaking and chiseling the exposed protecting wall of the anti-slide pile body;
and S9, sequentially removing the first template, the second template and the rubber pad to expose the exposed surface of the smooth-surface anti-slide pile.
By adopting the technical scheme, the attached template is provided with the flat forming cavity surface, so that the surface of the exposed section of the poured slide-resistant pile achieves the effect of fair-faced concrete, the flatness and the appearance of the surface of the exposed section of the slide-resistant pile are ensured, the natural texture of the formed concrete can be used as a facing, plastering is not needed, and the cost and the time for erecting a scaffold and plastering are saved; and the rubber pad has buffering cushioning effect, can reduce the impact force that the broken chisel produced among the dado process to the influence of friction pile to reduce the surface damage of the section that exposes of friction pile.
Optionally, the second template is provided with a limiting structure for controlling the rubber pad and the second template to be relatively fixed or separated, the second template is rotatably connected with an operating rod, the operating rod controls the limiting structure when rotating, the operating rod horizontally passes through a through hole formed in the first template, a first bump is convexly arranged on the outer peripheral wall of the operating rod, and a first avoiding groove for avoiding the first bump is formed in the inner wall of the through hole along the axial direction of the first avoiding groove;
in the step S6, a rubber pad is attached to the inner surface of the second formwork in advance and fixed to the second formwork through a limiting structure; firstly, drilling a hole for an operating rod to pass through on the inner surface of the retaining wall of the exposed section of the anti-slide pile body, then fixing a first template on the inner surface of the retaining wall, and ensuring that the plane of the first template is in a vertical plane; then, the operating rod on the second template penetrates through the through hole on the first template and is inserted into the hole of the protective wall in an interference manner, the first convex block on the operating rod is enabled to be abutted against the inner surface of the first template, and then the second template and the first template are spaced and relatively fixedly arranged;
in the step S8, a partial chiseling is performed during the chiseling process to expose the operating rod, the operating rod is rotated to separate the second template from the rubber pad through the limiting structure, the first bump moves to a position aligned with the first avoiding groove along with the rotation of the operating rod, and the operating rod is horizontally moved to drive the second template to move close to the first template, i.e., to make the second template spaced from the rubber pad; finally, the rest part of the protective wall is broken and chiseled.
By adopting the technical scheme, the limit structure is arranged to realize the detachable connection of the rubber pad and the second template, so that the second template is conveniently detached from the rubber pad, namely, a space is formed between the slide-resistant pile and the retaining wall, and the condition that the impact force generated by crushing and chiseling the retaining wall is transmitted to the slide-resistant pile can be effectively reduced, so that the surface flatness and the attractiveness of the exposed section of the slide-resistant pile are ensured; when concrete is poured, the second template has a plane supporting effect on the rubber pad, so that the plane stability of the rubber pad can be ensured, and the surface flatness of the anti-slide pile after pouring is ensured; and when the rubber pad needs to be disassembled, because the space is arranged between the second template and the rubber pad, the rubber pad only needs to be pulled along one corner of the rubber pad, so that the flexible rubber pad is slowly taken off from the surface of the formed anti-slide pile, and the damage to the surface of the anti-slide pile in the process of disassembling the rubber pad is greatly reduced.
Optionally, the limiting structure comprises a fixed cylinder, a rotating rod, a gear and a rack; the fixed cylinder is fixedly arranged on the surface, facing the second template, of the rubber pad, an annular groove is formed in the inner wall of the fixed cylinder, the rotating rod is rotatably connected with the second template, a second bump rotatably connected with the annular groove is fixed to the outer peripheral wall of the rotating rod, and a second avoidance groove for allowing the second bump to axially move along the rotating rod is formed in the inner wall of the fixed cylinder in a penetrating mode; the gear sleeve is fixed on the rotating rod, the rack is horizontally arranged on the second template in a sliding mode, the rack is meshed with the gear, and the operating rod drives the rack to horizontally slide when rotating.
By adopting the technical scheme, when the rubber pad and the second template need to be fixed, the rotating rod is inserted into the fixed cylinder, the second convex block is positioned in the annular groove and staggered with the second avoiding groove, and the fixed cylinder limits the rotating rod, so that the rubber pad and the second template are attached and fixed; when the template needs to be detached, the operating rod can be rotated to enable the first lug on the operating rod to be aligned with the first avoidance groove, the operating rod has the possibility of horizontal sliding, meanwhile, the rack is driven to horizontally slide by the rotation of the operating rod, so that the rotating rod is driven to rotate through the meshing of the rack and the gear, the second lug on the rotating rod is aligned with the second avoidance groove, and the second template and the rubber pad are in a separable state; then the operating rod is horizontally slid to drive the second template to move in the direction close to the first template so as to separate the second template from the rubber pad, so that the unlocking device is convenient and quick and can realize two kinds of unlocking at one time.
Optionally, the number of the fixed cylinders is multiple, the fixed cylinders are uniformly arranged on the surface of the rubber pad facing the second template, and the same rack is meshed with the gears on the same horizontal line simultaneously; the second template slides along rack length direction and is connected with vertical strip, vertical strip simultaneously with each rack fixed connection, vertical strip is seted up the waist shape hole of vertical setting, the terminal surface off-centre of action bars is fixed with branch, branch inserts in the waist shape is downthehole.
By adopting the technical scheme, the second template is connected with the rubber pad in a multi-point manner by arranging the plurality of fixed cylinders, so that the connection stability between the rubber pad and the second template is greatly improved, and the pouring forming quality of the slide-resistant pile is facilitated; the vertical bars are driven to horizontally slide through the rotation of the operating rod, so that the rotation of the gear is realized; and, vertical strip can also drive a plurality of rack horizontal slip simultaneously, convenient and fast.
Optionally, wear to be equipped with the billet of multichannel horizontal setting in the rubber pad.
By adopting the technical scheme, the steel bars have higher strength, and can carry out plane support on the rubber pad so as to improve the integral flatness of the rubber pad; and when the rubber pad is uncovered from top to bottom, the steel bar can be used as a counterweight bar to accelerate the uncovering speed, and a multi-section effect is formed at the same time, namely the rubber pad is uncovered section by section to reduce the uncovering difficulty.
Optionally, the same steel bar is fixedly connected with the fixed cylinders on the same horizontal line.
Through adopting above-mentioned technical scheme, be convenient for realize the relatively fixed between solid fixed cylinder and the rubber pad.
Optionally, a pulling rope is arranged at the upper edge of the rubber pad, and the other end of the pulling rope sequentially and downwards bypasses the bottom of the second template, upwards penetrates into the operating rod and axially penetrates out of the operating rod along the operating rod.
Through adopting above-mentioned technical scheme, when forming the interval between second template and the rubber pad, can pull the haulage rope, make the haulage rope exert decurrent power to the top edge of rubber pad, in order to reveal the rubber pad from last to down, the clearance that forms between second template and the rubber pad provides the deformation space for being the rubber pad of the state of buckling just, the degree of buckling of rubber pad has also been restricted in the clearance that forms between second template and the rubber pad simultaneously, ensure that the rubber pad only can buckle downwards, therefore, greatly do benefit to the rubber pad and reveal with stable speed and deformation state, thereby effectively ensured the surface integrality of friction pile.
Optionally, one end of the operating rod is rotatably sleeved with a rotating sleeve, and one end of the traction rope is tied on the rotating sleeve.
Through adopting above-mentioned technical scheme, can realize the pulling of haulage rope through rotating the cover, convenient and fast.
Optionally, a PET film is covered and fixed on the surface of the rubber pad facing away from the second template.
Through adopting above-mentioned technical scheme, the PET film has comparatively good toughness and shock resistance to effectively ensure the surface integrality of friction pile.
Optionally, a sealing tape is arranged at a junction between adjacent template units.
By adopting the technical scheme, the slurry leakage situation in the concrete pouring process can be reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the attached template is provided with a flat forming cavity surface, so that the surface of the exposed section of the poured slide-resistant pile achieves the effect of fair-faced concrete, the flatness and the appearance of the surface of the exposed section of the slide-resistant pile are ensured, the natural texture of the formed concrete can be used as a facing, plastering is not needed, and the cost and time for erecting a scaffold and plastering are saved;
2. the rubber pad is detachably connected with the second template by arranging the limiting structure, so that the operating rod is used for driving the second template to move, the second template is detached from the rubber pad, namely, a space is formed between the anti-slide pile and the protective wall, the impact force generated by crushing and chiseling the protective wall can be effectively reduced and transmitted to the anti-slide pile, and the surface flatness and the attractiveness of the exposed section of the anti-slide pile are ensured;
3. through pulling of the hauling rope, the rubber pad is uncovered from top to bottom and at a stable speed and deformation state, and therefore the surface integrity of the slide-resistant pile is effectively guaranteed.
Drawings
Fig. 1 is a schematic view of the overall structure of the attachment type template of embodiment 1.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural view of the template unit of embodiment 1.
Fig. 4 is a partially enlarged view at B in fig. 3.
Fig. 5 is a schematic diagram for embodying the position of the rotating lever of embodiment 1.
Fig. 6 is a partial sectional view for embodying the internal structure of the second template of embodiment 1.
Fig. 7 is a partially enlarged view at C in fig. 6.
Fig. 8 is a broken sectional view for showing the connection relationship of the rotary rod and the fixed cylinder in embodiment 1.
Fig. 9 is a flow chart of the construction method of embodiment 1.
Fig. 10 is a schematic view of the completed retaining wall construction of example 1.
Fig. 11 is a side view of the entire structure of embodiment 2.
Fig. 12 is a schematic view for showing a curved state of the rubber pad of example 2.
Description of reference numerals: 1. a first template; 2. a second template; 3. a rubber pad; 5. a hauling rope; 10. anti-slide piles; 100. a template unit; 11. a guide hole; 12. perforating; 13. a first avoidance slot; 20. protecting the wall; 21. a guide bar; 22. an operating lever; 221. a strut; 222. a through hole; 223. rotating the sleeve; 224. a guide bar; 23. a first bump; 24. an accommodating chamber; 25. a horizontal rail; 30. plugging the adhesive tape; 31. a steel bar; 41. a fixed cylinder; 411. a ring groove; 412. a second avoidance slot; 42. a rotating rod; 421. a second bump; 43. a gear; 44. a rack; 45. a vertical bar; 451. a waist-shaped hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-12.
The embodiment 1 of the application discloses cutting friction pile exempts from to plaster attached form board. Referring to fig. 1 and 2, the formwork unit comprises four formwork units 100, the formwork units 100 are fixedly arranged on the inner surface of the retaining wall 20, opposite surfaces of the four formwork units 100 surround to form a mold cavity for pouring the slide-resistant pile 10, and a sealing tape 30 is bonded at a junction between two adjacent formwork units 100.
The template unit 100 is firstly installed on the inner surface of the retaining wall 20 corresponding to the exposed section of the poured slide-resistant pile 10, then the plugging adhesive tape 30 is adhered to reduce the gap at the junction between the adjacent template units 100, then the concrete of the slide-resistant pile 10 is poured to manufacture the slide-resistant pile 10, and the smooth forming cavity surface of the template unit 100 ensures that the surface flatness of the exposed section of the slide-resistant pile 10 is good.
As shown in fig. 3, the formwork unit 100 sequentially includes a first formwork 1, a second formwork 2 and a rubber pad 3 along a direction away from the adjacent retaining wall 20, the first formwork 1, the second formwork 2 and the rubber pad 3 are all parallel to a vertical plane, wherein the first formwork 1 is fixedly connected with the retaining wall 20 through a steel nail.
As shown in fig. 3 and 4, a space is formed between the second template 2 and the first template 1, a plurality of guide rods 21 are vertically fixed on the surface of the second template 2, and the first template 1 is provided with guide holes 11 for the guide rods 21 to horizontally slide and insert, that is, the second template 2 can horizontally slide relative to the first template 1; an operating rod 22 is arranged in the middle of the second template 2, the operating rod 22 is arranged in parallel with the guide rod 21, and the operating rod 22 is rotatably connected with the second template 2; the middle part of first template 1 runs through and has seted up perforation 12, and operating rod 22 slides with perforation 12 and is connected, and the periphery wall protrusion of operating rod 22 has first lug 23, and the inner wall of perforation 12 runs through along self axial and sets up the first groove 13 of dodging that is used for dodging first lug 23.
A limiting structure is further arranged between the second template 2 and the rubber pad 3, and the operation of the limiting structure can be controlled through the rotation of the operating rod 22, so that the relative fixing or separation state of the second template 2 and the rubber pad 3 is controlled.
As shown in fig. 5 and 6, the limiting structure comprises a fixed cylinder 41, a rotating rod 42, a gear 43, a rack 44 and a vertical bar 45; the rotating rods 42 are parallel to the operating rods 22, the rotating rods 42 are uniformly arranged on the surface of the second template 2 opposite to the rubber pad 3, the rotating rods 42 are rotatably connected with the second template 2, and second protrusions 421 are fixed on the outer peripheral wall of the rotating rods 42.
As shown in fig. 6, the second mold plate 2 has an accommodating cavity 24 therein, the gear 43 and the rack 44 are both located in the accommodating cavity 24, the gear 43 is fixed on the rotating rod 42 in a sleeving manner, the horizontal rail 25 is fixed in the accommodating cavity 24, the rack 44 is connected with the horizontal rail 25 in a sliding manner, and the rack 44 is simultaneously connected with the gears 43 on the same horizontal line in a meshing manner.
As shown in fig. 6 and 7, the vertical strip 45 is fixedly connected to the racks 44, a waist-shaped hole 451 is formed through the middle of the vertical strip 45, the waist-shaped hole 451 is formed along the length direction of the vertical strip 45, a supporting rod 221 is fixed on the end surface of the operating rod 22 located in the accommodating cavity 24, the supporting rod 221 and the operating rod 22 are eccentrically arranged, the supporting rod 221 is inserted into the waist-shaped hole 451, and the supporting rod 221 and the waist-shaped hole 451 are connected in a sliding manner.
When the operating rod 22 is rotated, the vertical bar 45 can be driven to slide for a certain distance along the length direction of the horizontal rail 25 by the matching of the supporting rod 221 and the waist-shaped hole 451, so that the rack 44 is driven to slide along the length direction of the horizontal rail 25, and the rotating rod 42 is driven to rotate for a certain angle by the meshing of the gear 43.
As shown in fig. 6, the surface of the rubber pad 3 that deviates from the second template 2 is covered with a PET film (not marked in the figure), the rubber pad 3 is provided with a plurality of steel bars 31 arranged horizontally, each steel bar 31 is arranged at intervals along the vertical direction, each fixing cylinder 41 is welded and fixed on the steel bar 31 at intervals along the length direction of the steel bar 31, the opening of the fixing cylinder 41 is exposed out of the surface of the rubber pad 3 facing the second template 2, and the fixing cylinder 41 and the rotating rod 42 are arranged in a one-to-one correspondence manner.
As shown in fig. 8, the inner wall of the fixed cylinder 41 is provided with a ring groove 411 and a second avoiding groove 412, the second avoiding groove 412 is axially arranged along the fixed cylinder 41, and the rotating rod 42 can be horizontally inserted into the fixed cylinder 41 through the matching of the second protrusion 421 and the second avoiding groove 412; and the second projection 421 is matched with the ring groove 411, so that the rotating rod 42 and the fixed cylinder 41 are rotatably arranged.
When the rubber pad 3 and the second template 2 need to be fixed, the rotating rod 42 is inserted into the fixed cylinder 41, the second projection 421 is located in the annular groove 411, the second projection 421 is staggered with the second avoiding groove 412, and at this time, the fixed cylinder 41 limits the rotating rod 42, so that the rubber pad 3 and the second template 2 are attached and fixed; when the separation is needed, the operating rod 22 can be rotated to drive the rotating rod 42 to rotate through transmission, so that the second protrusion 421 on the rotating rod 42 is aligned with the second avoiding groove 412, that is, the second template 2 and the rubber pad 3 are in a separable state.
The embodiment 1 of the application also discloses a cutting slide-resistant pile 10 plastering-free attached formwork construction method, as shown in fig. 9, comprising the following steps:
s1, construction preparation, which comprises the following steps:
s1.1, examining construction design drawings and familiarizing with relevant data. Whether the drawings are complete or not is checked, whether the drawings have errors or contradictions or not is checked, whether the design content is consistent with the construction conditions or not is checked, whether the problems exist in lap joint and matching among various work types or not is checked, and the like.
S1.2, compiling a repair scheme, and familiar with relevant standard requirements, making a bottom-meeting work of the construction technology of the project for all constructors and managers, and making a detailed bottom-meeting work for key nodes of construction, so that all constructors can know the technical key points of the project.
S1.3, plan purchasing preparation of materials such as reinforcing steel bars, concrete and the like is carefully made, various material plans are compiled, a plurality of materials are purchased, and a perfect management method is formulated through warehousing, storage and ex-warehouse.
S2, positioning and lofting: and on the basis of a three-way plane of the field, measuring the 10 pile sites, the control points and the elevations of the slide-resistant piles according to the data of the measurement control network and the pile plane position diagram. And (5) scattering a lime line as a pile excavation dimension line, and excavating after rechecking without errors.
S3, pile hole excavation: excavating layer by layer from top to bottom by using picks and shovels, adopting emulsion explosive shallow hole blasting when encountering hard rocks, and slightly unevenness the wall of a pile hole in the process of excavating the hole so as to increase the side resistance of a contact surface.
S4, constructing the retaining wall 20: the construction retaining wall 20 is timely followed along with excavation; after the reinforcing steel bars of the protective wall 20 are bound, the positions of the formwork supporting of each section of the protective wall 20 are rechecked, and the concrete of the protective wall 20 can be poured after the detection without errors. As shown in fig. 10, the form of the retaining wall 20 is a shaped combined straight steel form, after the form is removed, the displacement, the flatness and the verticality of the formed retaining wall 20 are checked, the excessive part is timely chiseled and repaired, meanwhile, the plain concrete of the protruding part (dustpan opening) is chiseled to ensure that the inner surface of the retaining wall 20 is straight, and the retaining wall 20 can be subjected to the next cycle construction after being rechecked to be qualified after being formed.
S5, checking and accepting the formed holes: and after the hole is formed, comprehensively checking the section size of the pile body, the hole bottom mark and the pile position central line and recording.
S6, installing the attached template, comprising the following steps:
s6.1, measurement lofting: in the height range from the pile top to the excavation height of the cutting (namely the exposed section of the pile body), an attached template installation control line is measured by adopting a hanging line drop method, and ink line marks are popped on the inner surface of the retaining wall 20.
S6.2, carry out fixed connection with rubber pad 3 and second template 2 in advance, concrete mode is: insert the rotating rod 42 in the fixed cylinder 41, the second lug 421 is located in the annular groove 411 to ensure that the rubber pad 3 is attached to the inner surface of the second template 2, then rotate the operating rod 22, and through transmission, drive the rotating rod 42 to rotate, so that the second lug 421 and the second avoiding groove 412 are staggered, and at this moment, the fixed cylinder 41 limits the rotating rod 42 to realize the attachment fixation between the rubber pad 3 and the second template 2.
S6.3, drilling a hole in the inner surface of the retaining wall 20 corresponding to the exposed section of the pile body of the slide-resistant pile 10 so that a subsequent operating rod 22 can penetrate through the hole, fixing the first template 1 on the inner surface of the retaining wall 20 through a steel nail, and ensuring that the plane of the first template 1 is in a vertical plane; then, the operating rod 22 on the second template 2 is inserted through the through hole 12 on the first template 1 and is inserted into the hole of the protective wall 20 in an interference manner, and the first bump 23 on the operating rod 22 is ensured to abut against the inner surface of the first template 1, so that a space is formed between the second template 2 and the first template 1, and the size of the space is larger than the thickness of the rubber pad 3.
S6.4, the lower edge of the rubber pad 3 extends downwards, then the lower edge of the rubber pad 3 is connected with the first formwork 1 through the steel nails, and the lower edge of the rubber pad 3 has a blocking effect on concrete so as to reduce the occurrence of the situation that the concrete overflows into the gap between the second formwork 2 and the first formwork 1 in the concrete pouring process of the anti-slide pile 10.
S7, pouring the concrete of the slide-resistant pile 10: the surface of the PET film is cleaned before concrete pouring, the interval time of layered pouring is strictly controlled for the pile body concrete in the height range (the exposed section of the pile body) from the pile top to the excavation height of the cutting, the surface connecting trace influencing the molding impression is reduced, and the depth of the vibrating rod inserted into the surface is not less than 50 mm.
S8, crushing and chiseling the protective wall 20: after cutting earth is excavated, breaking and chiseling the exposed pile body protecting wall 20; in the chiseling process of the protective wall 20, partial chiseling is performed firstly to expose the operating rod 22 and the guide hole 11, then the exposed end of the operating rod 22 is rotated, the first bump 23 moves to the position aligned with the first avoiding groove 13 along with the rotation of the operating rod 22, the rotating rod 42 also rotates along with the operating rod 22 through transmission, the second bump 421 on the rotating rod 42 also rotates to the position aligned with the second avoiding groove 412, then the operating rod 22 is horizontally pulled outwards to drive the second template 2 to move close to the first template 1, namely the second template 2 is separated from the rubber pad 3, so that the second template 2 and the rubber pad 3 have an interval, and the rubber pad 3 is still in a state of being attached to the outer wall of the anti-slide pile 10; and finally crushing and chiseling the rest of the retaining wall 20.
S9, demolding: the first template 1 and the second template 2 are sequentially removed, and then the rubber pad 3 is slowly uncovered downwards from the upper edge of the rubber pad 3 to expose the exposed surface of the smooth-surface slide-resistant pile 10.
The implementation principle of the embodiment 1 of the application is as follows: by arranging the attached template with a flat forming cavity surface, the surface of the exposed section of the poured anti-slide pile 10 achieves the effect of fair-faced concrete, so that the flatness and the appearance of the surface of the exposed section of the anti-slide pile 10 are ensured.
Through the separation operation of the second template 2 and the rubber pad 3, a space is formed between the slide-resistant pile 10 and the retaining wall 20, so that the condition that the impact force generated by crushing and chiseling the retaining wall 20 is transmitted to the slide-resistant pile 10 can be effectively reduced, the structural damage on the surface of the slide-resistant pile 10 is reduced, and the surface flatness and the attractiveness of the exposed section of the slide-resistant pile 10 are ensured; and when concreting, second template 2 and rubber pad 3 are laminated relatively, and second template 2 has the plane supporting effect to rubber pad 3 to can ensure the planar stability of rubber pad 3, and then ensure the surface flatness after the friction pile 10 pours.
Embodiment 2, on the basis of embodiment 1, an arrangement is made such that, as shown in fig. 11, a rotating sleeve 223 is arranged at one end of the operating rod 22, which is away from the second template 2, and the rotating sleeve 223 is rotatably connected with the operating rod 22; a traction rope 5 is fixed at the upper edge of the rubber pad 3, and the other end of the traction rope 5 sequentially and downwards winds the bottom of the second template 2, upwards penetrates through a through hole 222 in the operating rod 22, axially penetrates out of the operating rod 22 along the through hole 222, and is bound and fixed on a rotating sleeve 223; and a guide rod 224 is fixed to an outer wall of the operating lever 22, and the traction rope 5 can be wound around the guide rod 224.
When forming the interval between second template 2 and the rubber pad 3, rotatable commentaries on classics cover 223 to rolling haulage rope 5, make haulage rope 5 exert downward force to the top edge of rubber pad 3, in order to reveal rubber pad 3 from last to bottom, as shown in fig. 12, the clearance that forms between second template 2 and the rubber pad 3 provides the deformation space for being the rubber pad 3 of bending state just, ensures that rubber pad 3 can only buckle downwards, and consequently, greatly does benefit to rubber pad 3 and reveals with stable speed and deformation state, thereby has effectively ensured the surface integrality of friction pile 10.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A cutting slide-resistant pile plastering-free attached formwork construction method is characterized by comprising the following steps: the method comprises the following steps:
s1, construction preparation;
s2, determining the position point, the control point and the elevation of the slide-resistant pile (10);
s3, excavating pile holes;
s4, constructing the retaining wall (20): the construction retaining wall (20) is timely followed along with excavation, and the inner surface of the formed retaining wall (20) is straight;
s5, checking and accepting the formed holes;
s6, mounting the attached template: the attached template comprises four template units (100), and opposite surfaces of the four template units (100) surround to form a mold cavity for pouring the slide-resistant pile (10); the template unit (100) comprises a first template (1) fixedly connected with the inner surface of the protective wall (20), a second template (2) positioned on one side, far away from the protective wall (20), of the first template (1) and a rubber pad (3) positioned on one side, far away from the first template (1), of the second template (2), wherein the rubber pad (3) covers the inner surface of the second template (2);
the specific installation process is as follows: a rubber pad (3) is attached to the surface of the second template (2) in advance; then fixing the first template (1) on the inner surface of the protective wall (20), ensuring that the plane of the first template (1) is in a vertical plane, and then connecting the second template (2) with the first template (1);
s7, pouring concrete of the slide-resistant pile (10);
s8, after the cut earthwork is excavated, breaking and chiseling the exposed pile body protecting wall (20) of the slide-resistant pile (10);
s9, sequentially removing the first template (1), the second template (2) and the rubber pad (3) to expose the exposed surface of the anti-slide pile (10) with a flat surface.
2. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 1, characterized in that: the second template (2) is provided with a limiting structure for controlling the rubber pad (3) and the second template (2) to be relatively fixed or separated, the second template (2) is rotatably connected with an operating rod (22), the limiting structure is controlled when the operating rod (22) rotates, the operating rod (22) horizontally penetrates through a through hole (12) formed in the first template (1), a first convex block (23) is convexly arranged on the outer peripheral wall of the operating rod (22), and a first avoiding groove (13) for avoiding the first convex block (23) is formed in the inner wall of the through hole (12) in a penetrating manner along the axial direction of the inner wall;
in the step S6, a rubber pad (3) is attached to the inner surface of the second template (2) in advance and is fixed on the second template (2) through a limiting structure; firstly, drilling a hole for an operating rod (22) to pass through on the inner surface of a retaining wall (20) of an exposed section of a pile body of an anti-slide pile (10), then fixing a first template (1) on the inner surface of the retaining wall (20), and ensuring that the plane of the first template (1) is in a vertical plane; then, an operating rod (22) on the second template (2) penetrates through the through hole (12) on the first template (1) and is inserted into the hole of the protective wall (20) in an interference manner, a first lug (23) on the operating rod (22) is ensured to abut against the inner surface of the first template (1), and then the second template (2) and the first template (1) are spaced and relatively fixedly arranged;
in the step S8, a part of the protective wall (20) is chiseled first in the chiseling process, and the operating rod (22) is exposed, the operating rod (22) is rotated, the second template (2) and the rubber pad (3) are in a separated state through the limiting structure, the first bump (23) moves to the position aligned with the first avoidance groove (13) along with the rotation of the operating rod (22), and the operating rod (22) is horizontally moved to drive the second template (2) to move in the direction close to the first template (1), that is, the second template (2) and the rubber pad (3) have an interval; finally, the rest part of the protective wall (20) is crushed and chiseled.
3. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 2, characterized in that: the limiting structure comprises a fixed cylinder (41), a rotating rod (42), a gear (43) and a rack (44); the fixed cylinder (41) is fixedly arranged on the surface, facing the second template (2), of the rubber pad (3), an annular groove (411) is formed in the inner wall of the fixed cylinder (41), the rotating rod (42) is rotatably connected with the second template (2), a second bump (421) rotatably connected with the annular groove (411) is fixed to the outer peripheral wall of the rotating rod (42), and a second avoiding groove (412) for the second bump (421) to axially move along the rotating rod (42) is further formed in the inner wall of the fixed cylinder (41) in a penetrating mode; the gear (43) is sleeved and fixed on the rotating rod (42), the rack (44) and the second template (2) are horizontally arranged in a sliding mode, the rack (44) is meshed with the gear (43), and the operating rod (22) drives the rack (44) to horizontally slide when rotating.
4. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 3, characterized in that: the fixed cylinders (41) are arranged in a plurality, the fixed cylinders (41) are uniformly distributed on the surface, facing the second template (2), of the rubber pad (3), and the same rack (44) is meshed with the gears (43) on the same horizontal line simultaneously; second template (2) are slided along rack (44) length direction and are connected with vertical strip (45), vertical strip (45) simultaneously with each rack (44) fixed connection, vertical strip (45) are seted up waist shape hole (451) of vertical setting, the terminal surface off-centre of action bars (22) is fixed with branch (221), branch (221) insert in waist shape hole (451).
5. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 4, characterized in that: a plurality of steel bars (31) which are horizontally arranged are arranged in the rubber pad (3) in a penetrating way.
6. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 5, characterized in that: the same steel bar (31) is fixedly connected with the fixed cylinders (41) on the same horizontal line.
7. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 2, characterized in that: the upper edge of the rubber pad (3) is provided with a hauling rope (5), and the other end of the hauling rope (5) sequentially and downwards bypasses the bottom of the second template (2), upwards penetrates into the operating rod (22) and axially penetrates out of the operating rod (22) along the operating rod (22).
8. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 7, characterized in that: one end of the operating rod (22) is rotatably sleeved with a rotating sleeve (223), and one end of the traction rope (5) is tied on the rotating sleeve (223).
9. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 1, characterized in that: and a PET film is covered and fixed on the surface of the rubber pad (3) departing from the second template (2).
10. The cutting slide-resistant pile plastering-free attached formwork construction method according to claim 1, characterized in that: and a sealing adhesive tape (30) is arranged at the junction between the adjacent template units (100).
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| CN202110852360.4A CN113737821B (en) | 2021-07-27 | 2021-07-27 | Cutting slide-resistant pile plastering-free attached formwork construction method |
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| CN202110852360.4A CN113737821B (en) | 2021-07-27 | 2021-07-27 | Cutting slide-resistant pile plastering-free attached formwork construction method |
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| CN114789501A (en) * | 2022-05-20 | 2022-07-26 | 广东国嘉建设工程有限公司 | Aluminum template for precast concrete pouring |
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| CN113737821B (en) | 2022-10-04 |
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