CN114673174B - Template supporting device for anchor beam pouring construction and construction method - Google Patents
Template supporting device for anchor beam pouring construction and construction method Download PDFInfo
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- CN114673174B CN114673174B CN202210277098.XA CN202210277098A CN114673174B CN 114673174 B CN114673174 B CN 114673174B CN 202210277098 A CN202210277098 A CN 202210277098A CN 114673174 B CN114673174 B CN 114673174B
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- 238000010276 construction Methods 0.000 title claims abstract description 65
- 238000009415 formwork Methods 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 10
- 230000008859 change Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007728 cost analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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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
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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Abstract
The invention discloses a formwork support system for anchor beam pouring construction and a construction method. The template supporting device provided by the invention can realize angle change and length change of the bottom die and the side die through adjusting the positions of the bolts and the hinges, and is suitable for anchor beams with various sizes and shapes. Besides the expansion bolts, other components of the formwork support device can be recycled and used after maintenance, so that construction measure cost is reduced. The template supporting device and the construction method for pouring construction of the anchor beam, provided by the invention, do not need to treat and backfill earthwork at the lower part of the anchor beam, can be suitable for various soil conditions, simplify the construction flow and accelerate the construction speed. The template supporting device for the anchor beam pouring construction does not need to be customized, can be processed on site, and is simple and convenient to assemble and disassemble, efficient and quick.
Description
Technical Field
The invention belongs to the field of construction, and particularly relates to a formwork support device for anchor beam pouring construction and a construction method.
Background
The anchor beam is arranged for convenient locking before the anchor cable of the prestressed anchor cable supporting structure is tensioned, the steel bar installation and the concrete pouring construction are required when the anchor beam is of a cast-in-situ structure, and the installation template is required for concrete molding as a construction measure. The conventional construction method for the prestressed anchor cable construction comprises the following steps: earth excavation, anchor rod positioning, drilling, pore forming, rod member placement, grouting, anchor beam construction, tensioning and locking, net hanging, concrete injection and maintenance, wherein the anchor beam concrete can be subjected to the next working procedure after reaching the strength required by design, and is a key line in the whole process. In the general earthwork excavation process, the condition of overbreak can occur, an anchor beam is poured by adopting a conventional construction method, the basic principle is similar to that of a poured foundation beam, and a plurality of processes are required before pouring, namely, overbreak partial earthwork backfilling, leveling, concrete cushion layer pouring, side die installation and reinforcement. From the construction period analysis, the method has a plurality of construction procedures, the earth construction is also influenced by factors such as environmental protection, machinery and the like, the construction period is consumed greatly, and the overall construction progress is influenced. From the cost analysis, backfill soil is level, concrete cushion layer pouring all consumes the manual work, and the anchor beam construction is accomplished the back and need dig this part soil and cushion layer, clear up, can not have enough to meet the need the use.
Disclosure of Invention
The invention aims to solve the problems of long construction period, high cost and easiness in being influenced by soil property of the traditional construction method of the anchor beam in the prior art, and provides a template supporting device and a construction method for casting construction of the anchor beam, so that the construction speed of the anchor beam is increased, and the construction cost is reduced.
The specific technical scheme adopted by the invention is as follows:
In a first aspect, the invention provides a formwork support device for casting construction of an anchor beam, which is used for casting the anchor beam on a cast-in-place pile in a cast-in-place pile and anchor cable support system and comprises expansion bolts, hinges, clamping pieces, side dies, bottom dies, zhang Lasheng, pull rings, diagonal braces, longitudinal rods, transverse rods and back ribs;
The inclined stay bars, the longitudinal bars and the transverse bars are connected end to form a triangular support frame; the longitudinal rod is provided with a bolt hole for installing an expansion bolt, the whole triangular support frame can be fixed on a cast-in-place pile of an anchor beam to be cast through the expansion bolt, and the top surface of the transverse rod of the triangular support frame is used as a template supporting surface in an installation state; the transverse rod and the hinge are provided with a plurality of clamping grooves matched with the clamping pieces, and the clamping grooves on the transverse rod are arranged at intervals along the rod piece direction; one movable page in the hinge is detachably fixed on the clamping groove of the transverse rod through the clamping piece, and one end part of the side die is fixed on the other movable page of the hinge and can freely rotate around a hinge rotating shaft; the pull ring is fixed on a cast-in-place pile of the anchor beam to be cast and is positioned above the installation position of the triangular support frame; the back ribs are arranged on the template supporting surface at intervals; the end part of one end of the side mould, which is fixed with the hinge, is propped by the back ridge, and the end part of the other end of the side mould is fixed on the pull ring by stretching through a stretching rope, so that a concrete pouring area of an anchor beam is formed between the cast-in-place pile and the side mould; the bottom die is flatly paved on the top surface of each back ridge and continuously covers the concrete pouring area.
Preferably, at least two transverse rods are fixed to the top ends of the diagonal rods and the longitudinal rods in a side-by-side and top-surface-flush manner.
Preferably, the diagonal brace, the longitudinal rod and the transverse rod are all steel pipes.
Preferably, the diagonal brace, the longitudinal rod and the transverse rod are detachably connected and fixed through a butterfly bolt.
Preferably, the transverse rod is provided with a plurality of bolt holes at intervals along the rod direction at one end connected with the diagonal brace, and the end part of the diagonal brace is fixed in one of the bolt holes through a butterfly bolt, and the included angles of the longitudinal rod and the transverse rod are different when the diagonal brace is fixed in different bolt holes.
Preferably, the tensioning rope is a steel wire.
Preferably, the fastener is of a wedge-shaped structure, and the tip of the fastener is inserted into a group of clamping grooves overlapped with the transverse rod and the hinge to realize relative fixation of the transverse rod and the hinge.
Preferably, the side mold is a profiled steel sheet.
In a second aspect, the present invention provides a method for casting a concrete anchor beam in a cast-in-place pile-anchor cable supporting system using any one of the formwork support devices of the first aspect, comprising:
s1, splicing the diagonal brace, the longitudinal rod and the transverse rod end to end in advance to form a triangular support frame, fixing the triangular support frame through a butterfly bolt, and controlling an included angle between the longitudinal rod and the transverse rod during splicing so that the transverse rod meets the angle required by a bottom die during subsequent pouring when the longitudinal rod is in a vertical state;
S2, cleaning a surface layer of an area, in which an anchor beam is required to be poured, in the cast-in-place pile, vertically attaching a longitudinal rod of the assembled triangular support frame to the surface of the cast-in-place pile in a vertical posture, and driving expansion bolts into the longitudinal rod and the cast-in-place pile, so that the triangular support frame is fixed on the cast-in-place pile, and the elevation of the transverse rod is lower than the elevation of the bottom surface of the anchor beam to be poured;
S3, determining a bottom die installation area above the triangular support frame and a fixing position of the hinge according to a design position of the anchor beam to be poured, placing back ribs at intervals in the bottom die installation area on the transverse rod, and tiling the bottom die on the upper surface of each back rib; the method comprises the steps of installing built-in steel bars of an anchor beam on a bottom die, placing a hinge connected with a side die at a preset fixed position after the steel bars are installed, fixing the hinge in a clamping groove on a transverse rod through a clamping piece, and sticking sponge strips at the joint of the bottom die and the side die to prevent slurry overflow;
S4, anchoring the pull ring to the cast-in-place pile above the bottom die through an expansion bolt, adjusting the angle of the side die, supporting the side die by using a back edge at the end part of the side die, which is fixed with the hinge, and tensioning and fixing the other end of the side die on the pull ring through a tensioning rope, so that the included angle between the side die and the cast-in-place pile is kept to be complementary with the included angle between the anchor rope and the cast-in-place pile in the cast-in-place pile and anchor rope supporting system;
s5, setting mounting end templates at two ends of the corresponding anchor beam design position on the bottom die according to the design length of the anchor beam to be poured, so as to form a concrete pouring section together with the bottom die, the side die and the cast-in-place pile, pouring concrete meeting the design dosage into the concrete pouring section, and curing;
s6, after the concrete is cured to the design strength, removing Zhang Lasheng, recovering the pull ring, removing the side die, loosening the clamping piece, removing the hinge, removing the connection of the expansion bolt and the longitudinal rod, integrally removing the diagonal brace, the longitudinal rod and the transverse rod, and finally removing the bottom die and the back edge, thereby completing the construction of the anchor beam.
And (3) preferably, cleaning the components removed in the step (S6), and then turning over again to the next anchor beam to be constructed for use.
Compared with the prior art, the invention has the following beneficial effects:
1) The template supporting device and the construction method for pouring construction of the anchor beam, provided by the invention, do not need to treat and backfill earthwork at the lower part of the anchor beam, can be suitable for various soil conditions, simplify the construction flow and accelerate the construction speed.
2) The template supporting device for the anchor beam pouring construction does not need to be customized, can be processed on site, and is simple and convenient to assemble and disassemble, efficient and quick.
3) The template supporting device for the casting construction of the anchor beam can realize the angle change and the length change of the bottom die and the side die by adjusting the positions of the bolts and the shutters, and is suitable for anchor beams with various sizes and shapes. Besides the expansion bolts, other components of the formwork support device can be recycled and used after maintenance, so that construction measure cost is reduced.
Drawings
Fig. 1 is a schematic diagram of an installation state of a formwork support device for anchor cable concrete anchor beam pouring construction;
FIG. 2 is a partial plan view of a formwork support device for anchor cable concrete anchor beam casting construction;
the labels in the figures are: cast-in-place pile 1, expansion bolts 2, butterfly bolts 3, bolt holes 4, hinges 5, buckling pieces 6, clamping grooves 7, profiled steel sheet side dies 8, bottom dies 9, steel wires 10, pull rings 11, diagonal braces 12, longitudinal rods 13, transverse rods 14 and main ribs 15.
Detailed Description
The invention is further illustrated and described below with reference to the drawings and detailed description. The technical features of the embodiments of the invention can be combined correspondingly on the premise of no mutual conflict.
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below. The technical features of the embodiments of the invention can be combined correspondingly on the premise of no mutual conflict.
In the description of the present invention, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected with intervening elements present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
The cast-in-place pile and anchor cable supporting system is commonly used in foundation pit construction, a lateral support is formed through the cast-in-place pile on the side wall of the foundation pit, and the cast-in-place pile is further anchored in soil on the periphery of the foundation pit through the anchor cable, so that the capability of the cast-in-place pile for resisting lateral load is improved. When an anchor beam is constructed in the cast-in-place pile and anchor cable supporting system, the conventional construction flow is as follows: backfilling the earthwork of the overexcavation part, flattening, pouring a concrete cushion layer, installing and reinforcing a side die, pouring an anchor beam, curing and removing the die. The construction process often requires a longer construction period and also creates a series of additional labor and material costs.
In a preferred embodiment of the invention, a template supporting device for casting construction of an anchor beam is provided, the template supporting device is used for casting the anchor beam on a cast-in-place pile in a cast-in-place pile and anchor cable supporting system, working procedures such as earth backfilling and concrete cushion casting are not needed, the template supporting device can be reused continuously, and labor and material cost is reduced. The device has the core that the rod piece is connected at different positions, so that the angle change of the bottom die of the template is realized, the length change of the bottom die is realized by using the clamping groove and the clamping piece, and the angle change of the side die is realized by using the hinge, so that the support system is suitable for the construction working conditions of anchor beams with various shapes and sizes. The specific structural form of the formwork support device will be described in detail.
As shown in fig. 1, the formwork support device for the anchor beam pouring construction comprises an expansion bolt 2, a hinge 5, a buckle piece 6, a side die 8, a bottom die 9, a tensioning rope 10, a pull ring 11, an inclined stay 12, a longitudinal rod 13, a transverse rod 14 and a back rib 15, and is integrally installed on a cast-in-place pile 1 for use. Wherein, the diagonal brace 12, the longitudinal bar 13 and the transverse bar 14 are connected end to form a triangular support frame. Further, the longitudinal rod 13 is provided with a plurality of bolt holes for mounting the expansion bolts 2. When in use, the whole triangular support frame can be fixed on the cast-in-place pile 1 of an anchor beam to be cast through the expansion bolts 2, and the expansion bolts 2 penetrate through bolt holes formed in the longitudinal rods 13 and the end parts of the expansion bolts are fixed in the cast-in-place pile 1. In the installation state, the top surface of the transverse rod 14 of the triangular support frame is used as a template supporting surface, so that other templates can be directly installed on the template supporting surface, and the backfilling of the superexcavated soil body below is not needed. The back ribs 15 are arranged on the supporting surface of the template at intervals, and the bottom die 9 is flatly paved on the top surface of each back rib 15.
In general, in order to ensure the smoothness of the formwork support surface, two or more transverse bars 14 may be provided and fixed to the top ends of the diagonal braces 12 and the longitudinal bars 13 in a side-by-side and top-surface-flush manner. As shown in fig. 2, two transverse rods 14 may be provided in this embodiment, one ends of the two transverse rods 14 are fixed to one end of the diagonal brace 12 by the butterfly bolt 3, and the other ends of the two transverse rods 14 are fixed to one end of the longitudinal rod 13 by the butterfly bolt 3, and the other ends of the diagonal brace 12 and the longitudinal rod 13 may also be fixed by the butterfly bolt 3. Therefore, the whole triangular support frame can be detachably installed, and the turning requirements in different scenes are met.
In the present invention, the specific materials of the diagonal brace 12, the longitudinal bar 13 and the lateral bar 14 are not limited, so long as the corresponding supporting strength can be satisfied. In view of convenience and cost of material taking, the spreader stay 12, the longitudinal rods 13 and the transverse rods 14 can be square steel pipes or other steel profiles, such as equilateral angle steel.
In addition, since different anchor beams may have different slope designs, the need for controlling the slope may exist for the counter form 9 required for casting the anchor beams in some cases. In this embodiment, a plurality of bolt holes 4 may be further formed in the transverse rod 14 at intervals along the rod direction at the end connected to the diagonal brace 12. Thus, the end of the diagonal brace 12 is fixed in one of the bolt holes 4 by the butterfly bolt 3, and according to the corresponding combination relation, when the end of the diagonal brace 12 is fixed in a different bolt hole 4, the included angle between the corresponding longitudinal rod 13 and the corresponding transverse rod 14 also changes. The vertical rod 13 is generally vertically arranged by being attached to the cast-in-place pile 1, so that the vertical rod is connected by rotating different bolt holes 4, the inclination angle of the transverse rod 14 can be adjusted, the gradient of the bottom die 9 is changed, and the construction requirements of different scenes are met.
The whole triangular support frame is equivalent to the mounting platform of other components and can be fixed at any height of the cast-in-place pile 1 according to the requirement. The hinge 5, the fastener 6, the side die 8, the bottom die 9, the tensioning rope 10 and the back edge 15 are all arranged on the triangular support frame. Wherein, all offered a plurality of draw-in groove 7 with buckle spare 6 complex on transverse rod 14 and the hinge 5, and draw-in groove 7 on the transverse rod 14 is along member direction interval arrangement. The hinge 5 is formed by hinging two movable pages through a hinge rotating shaft, one movable page is detachably fixed on one group of clamping grooves 7 of the transverse rod 14 through the clamping piece 6, one end part of the side die 8 is fixed on the other movable page of the hinge 5, and the side die 8 can drive the other movable page to freely rotate around the hinge rotating shaft. Therefore, the angle of the side die 8 can be adjusted as required so as to facilitate casting of anchor beams with different side angles.
In general, in a cast-in-place pile and anchor rope supporting system, the side surface of an anchor beam for fixing the end part of an anchor rope needs to be kept perpendicular to the anchor rope, so that the included angle between the side mould 8 and the cast-in-place pile 1 needs to be adjusted to be complementary with the included angle between the anchor rope and the cast-in-place pile 1, and the side surface of the anchor beam, on which the side mould 8 formed by casting is located, can be kept perpendicular to the anchor rope.
Because the end parts of the side dies 8 are connected through the hinges 5, the side dies cannot completely maintain the corresponding angles, and the back edges 15 and the pull ropes 10 are required to be combined for auxiliary fixing in the invention. One end of the pull rope 10 is required to be connected and fixed with the pull ring 11, and the pull ring 11 is fixed on the cast-in-place pile 1 of the anchor beam to be cast and is positioned above the installation position of the triangular support frame. The end part of one end of the side die 8 fixed with the hinge 5 is propped by a back ridge 15, and the end part of the other end is fixed on the pull ring 11 by stretching through a stretching rope 10. The back edge 15 of the top side mold 8 is arranged on one side of the side mold 8 facing the cast-in-place pile 1, and the back edge 15 can be processed to form an inclined plane with the same inclination angle of the side mold 8, so that the surface of the side mold 8 can be attached more. The back edge 15 can support the side mould 8 to prevent the side mould 8 from tilting inwards, and the tension of the pull rope 10 can ensure that the side mould 8 cannot tilt outwards in the concrete pouring process. And a concrete pouring area of the anchor beam can be formed between the cast-in-place pile 1 and the side die 8. The bottom die 9 needs to be tiled on the top surface of each back ridge 15, and continuously covers the whole concrete pouring area.
Moreover, the side form 8 in the present invention may be a profiled steel sheet which is used as a form for only one side face of the anchor beam, but it is also necessary to provide end forms at both end portions of the anchor beam during the concrete pouring process. The form of the end form is not limited and the specific mounting location may be based on the design location of the end of the anchor beam. The end form should ensure tightness with the remaining forms so that the end form encloses together with the bottom form 9, the side forms 8 and the cast-in-place pile 1 to form a concrete casting area. After the whole template of the anchor beam is erected, concrete meeting the design dosage can be poured in the concrete pouring section. Meanwhile, in order to prevent the overflow of the concrete in the pouring process, sponge strips can be adhered to the joints of the bottom die 9, the end templates and the side dies 8 to prevent the overflow.
Therefore, the width of the anchor beam can be changed by adjusting the fixing position of the hinge 5 on the transverse rod 14, the length of the anchor beam can be adjusted according to the end template arranged on the bottom film 9, and the side angle of the anchor beam is changed by the angle of the side mold 8 so as to adapt to construction requirements in different scenes.
In addition, the anchor beam needs to be bound with internal reinforcing steel bars before concrete is poured, and specific reinforcing steel bars need to be laid according to corresponding design requirements, so that the anchor beam is not different from a conventional concrete beam, and the anchor beam is not described in an unfolding way.
In addition, the tensioning lines 10 of the present invention may be any wire that meets the strength requirements, and steel wire is preferred in view of cost and material availability.
In addition, the pull ring 11 in the invention is preferably welded on the main reinforcement of the bored concrete pile 1, and the main reinforcement needs to be peeled off to ensure the fixing reliability.
In addition, the fastener 6 in the present invention may be any fastener capable of achieving a fixed connection between the transverse rod 14 and the hinge 5. In this embodiment, a steel member with a wedge-shaped structure is preferably adopted, and the tip end of the steel member is inserted into a group of clamping grooves 7 where the transverse rod 14 and the hinge 5 are overlapped, so that the two parts are relatively fixed. .
In addition, the types and the number of the expansion bolts 2 driven into the cast-in-place pile 1 are required to be determined according to structural strength calculation so as to meet the structural stability of the whole triangular support frame in the subsequent concrete pouring process.
Based on the template supporting device shown in the figure 1, the invention also provides a concrete anchor beam pouring construction method in a cast-in-place pile and anchor cable supporting system, which comprises the following steps:
S1, splicing the diagonal brace 12, the longitudinal rod 13 and the transverse rod 14 into a triangular support frame in an end-to-end mode in advance, fixing the triangular support frame through the butterfly bolt 3, and controlling an included angle between the longitudinal rod 13 and the transverse rod 14 during splicing, so that the transverse rod 14 meets the angle required by the bottom die 9 during subsequent pouring when the longitudinal rod 13 is in a vertical state.
S2, cleaning a surface layer of an area, in which an anchor beam is required to be poured, of the cast-in-place pile 1, vertically attaching a longitudinal rod 13 of the assembled triangular support frame to the surface of the cast-in-place pile 1 in a vertical posture, driving expansion bolts 2 into the longitudinal rod 13 and the cast-in-place pile 1, and fixing the triangular support frame on the cast-in-place pile 1, wherein the elevation of a transverse rod 14 is lower than the elevation of the bottom surface of the anchor beam to be poured.
S3, according to the design position of the anchor beam to be poured, the mounting area of the bottom die 9 above the triangular support frame and the fixing position of the hinge 5 can be predetermined by ejecting the side line of the bottom die 9 and the like,
Back ribs 15 are arranged in the mounting area of the bottom die 9 on the transverse rod 14 at intervals, and the bottom die 9 is tiled on the upper surface of each back rib 15; the built-in reinforcing steel bars of the anchor beams are arranged on the bottom die 9, after the reinforcing steel bars are arranged, the hinge 5 connected with the side die 8 is placed at a preset fixed position, the hinge 5 is fixed in the clamping groove 7 on the transverse rod 14 through the clamping piece 6, and sponge strips are stuck at the joint of the bottom die 9 and the side die 8 to prevent overflow.
S4, anchoring a pull ring 11 into the cast-in-place pile 1 above the bottom die 9 through an expansion bolt, adjusting the angle of the side die 8, propping up the side die 8 by using a back ridge 15 at the end part of one end of the side die 8 fixed with the hinge 5, and tensioning and fixing the other end of the side die 8 on the pull ring 11 through a tensioning rope 10, so that the included angle between the side die 8 and the cast-in-place pile 1 is kept to be complementary with the included angle between an anchor rope and the cast-in-place pile 1 in the cast-in-place pile and anchor rope support system.
S5, setting mounting end templates at two ends of the corresponding anchor beam design position on the bottom die 9 according to the design length of the anchor beam to be poured, so as to form a concrete pouring section together with the bottom die 9, the side dies 8 and the cast-in-place pile 1, and pouring concrete meeting the design dosage into the concrete pouring section and curing after acceptance inspection.
S6, after the concrete is cured to the design strength, removing Zhang Lasheng, recovering the pull ring 11, removing the side die 8, loosening the clamping piece 6, removing the hinge 5, removing the connection of the expansion bolt 2 and the longitudinal rod 13, integrally removing the inclined stay rod 12, the longitudinal rod 13 and the transverse rod 14, and finally removing the bottom die 9 and the back ridge 15 to finish the construction of the anchor beam.
In addition, after the components removed in the step S6 are cleaned, the components can be transferred to the next anchor beam to be constructed again for use.
In addition, in the construction process, if the soil between piles is locally dropped, the contact shape of the bottom die 9 and the soil surface can be adjusted on site, the bottom die 9 is ensured to be closed, and short steel bars are placed at the lower part of the bottom die 9 and used as temporary back edges to support the bottom die.
Therefore, the invention uses the cast-in-place pile as a fulcrum, has reasonable stress, does not need to consider the soil condition at the lower part during construction, has low requirements on the environmental conditions of construction sites, and is very beneficial to popularization and use.
The above embodiment is only a preferred embodiment of the present invention, but it is not intended to limit the present invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the equivalent substitution or equivalent transformation are within the protection scope of the invention.
Claims (10)
1. The template supporting device for the casting construction of the anchor beam is used for casting the anchor beam on the cast-in-place pile in a cast-in-place pile and anchor rope supporting system and is characterized by comprising an expansion bolt (2), a hinge (5), a buckle piece (6), a side die (8), a bottom die (9), zhang Lasheng (10), a pull ring (11), an inclined stay bar (12), a longitudinal rod (13), a transverse rod (14) and a back edge (15);
The inclined stay bars (12), the longitudinal bars (13) and the transverse bars (14) are connected end to form a triangular support frame; the longitudinal rod (13) is provided with a bolt hole for installing the expansion bolt (2), the whole triangular support frame can be fixed on the cast-in-place pile (1) of the anchor beam to be cast through the expansion bolt (2), and the top surface of the transverse rod (14) of the triangular support frame is used as a template supporting surface in the installation state; a plurality of clamping grooves (7) matched with the clamping pieces (6) are formed in the transverse rod (14) and the hinge (5), and the clamping grooves (7) on the transverse rod (14) are arranged at intervals along the rod piece direction; one movable page in the hinge (5) is detachably fixed on a clamping groove (7) of the transverse rod (14) through the clamping piece (6), and one end part of the side die (8) is fixed on the other movable page of the hinge (5) and can freely rotate around a hinge rotating shaft; the pull ring (11) is fixed on the cast-in-place pile (1) of the anchor beam to be cast and is positioned above the installation position of the triangular support frame; the back ribs (15) are arranged on the template supporting surface at intervals; the end part of one end, fixed with the hinge (5), of the side mould (8) is propped by a back ridge (15), and the end part of the other end is fixed on the pull ring (11) by stretching through a stretching rope (10), so that a concrete pouring area of an anchor beam is formed between the cast-in-place pile (1) and the side mould (8); the bottom die (9) is tiled on the top surface of each back ridge (15) and continuously covers the concrete pouring area.
2. A formwork support device for use in casting an anchor beam according to claim 1, wherein at least two of said transverse bars (14) are secured to the top ends of said diagonal braces (12) and longitudinal bars (13) side by side with flush top surfaces.
3. A formwork support device for casting an anchor beam according to claim 1, wherein the diagonal braces (12), the longitudinal bars (13) and the transverse bars (14) are steel pipes.
4. A formwork support device for casting an anchor beam according to claim 1, wherein the diagonal brace (12), the longitudinal bar (13) and the transverse bar (14) are detachably connected and fixed by a butterfly bolt (3).
5. The formwork support device for casting construction of anchor beams according to claim 4, wherein the transverse rods (14) are provided with a plurality of bolt holes (4) at intervals along the rod direction at one end connected with the diagonal brace (12), the end parts of the diagonal brace (12) are fixed in one of the bolt holes (4) through butterfly bolts (3), and the included angles of the longitudinal rods (13) and the transverse rods (14) are different when the end parts are fixed in different bolt holes (4).
6. A formwork support device for use in casting an anchor beam as claimed in claim 1, wherein said Zhang Lasheng (10) is steel wire.
7. A formwork support device for casting an anchor beam according to claim 1, wherein the fastener (6) has a wedge-shaped structure, and the tip of the fastener is inserted into a set of clamping grooves (7) where the transverse rod (14) and the hinge (5) are coincident to achieve relative fixation of the two.
8. A formwork support device for use in casting an anchor beam according to claim 1, wherein the side form (8) is a profiled sheet.
9. A construction method using the formwork support device for casting construction of an anchor beam according to any one of claims 1 to 8, comprising:
S1, splicing the diagonal brace (12), the longitudinal rod (13) and the transverse rod (14) into a triangular support frame in an end-to-end mode in advance, fixing the triangular support frame through the butterfly bolt (3), and controlling an included angle between the longitudinal rod (13) and the transverse rod (14) during splicing so that the transverse rod (14) meets the angle required by the bottom die (9) during subsequent pouring when the longitudinal rod (13) is in a vertical state;
S2, cleaning a surface layer of an area, in which an anchor beam is required to be poured, of the cast-in-place pile (1), vertically attaching a longitudinal rod (13) of the assembled triangular support frame to the surface of the cast-in-place pile (1) in a vertical posture, driving expansion bolts (2) into the longitudinal rod (13) and the cast-in-place pile (1), and fixing the triangular support frame on the cast-in-place pile (1), wherein the elevation of a transverse rod (14) is lower than the elevation of the bottom surface of the anchor beam to be poured;
S3, determining the mounting area of the bottom die (9) above the triangular support frame and the fixed position of the hinge (5) according to the design position of the anchor beam to be poured, placing back ribs (15) at intervals in the mounting area of the bottom die (9) on the transverse rod (14), and tiling the bottom die (9) on the upper surface of each back rib (15); the method comprises the steps that built-in steel bars of anchor beams are installed on a bottom die (9), after the steel bars are installed, a hinge (5) connected with a side die (8) is placed at a preset fixed position, the hinge (5) is fixed in a clamping groove (7) on a transverse rod (14) through a clamping piece (6), and sponge strips are adhered to the joint of the bottom die (9) and the side die (8) to prevent slurry overflow;
s4, anchoring a pull ring (11) into the cast-in-place pile (1) above the bottom die (9) through an expansion bolt, adjusting the angle of the side die (8), propping up the side die (8) by using a back rib (15) at the end part of the side die (8) fixed with the hinge (5), and tensioning and fixing the other end of the side die (8) on the pull ring (11) through a tensioning rope (10), so that the included angle between the side die (8) and the cast-in-place pile (1) is kept to be complementary with the included angle between an anchor rope and the cast-in-place pile (1) in the cast-in-place pile anchor rope supporting system;
S5, setting mounting end templates at two ends of the corresponding anchor beam design position on the bottom die (9) according to the design length of the anchor beam to be poured, so as to form a concrete pouring section together with the bottom die (9), the side die (8) and the cast-in-place pile (1), pouring concrete meeting the design dosage into the concrete pouring section, and curing;
S6, after the concrete is cured to the design strength, removing Zhang Lasheng (10), recovering the pull ring (11), removing the side die (8), loosening the clamping piece (6), removing the hinge (5), removing the connection of the expansion bolt (2) and the longitudinal rod (13), integrally removing the inclined stay rod (12), the longitudinal rod (13) and the transverse rod (14), and finally removing the bottom die (9) and the back edge (15), thereby completing the construction of the anchor beam.
10. The construction method of the formwork support device for casting construction of the anchor beam according to claim 9, wherein after each component removed in the step S6 is cleaned, the component is transferred to the next anchor beam to be constructed again.
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| CN202210277098.XA CN114673174B (en) | 2022-03-21 | 2022-03-21 | Template supporting device for anchor beam pouring construction and construction method |
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| CN202210277098.XA CN114673174B (en) | 2022-03-21 | 2022-03-21 | Template supporting device for anchor beam pouring construction and construction method |
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