Bridge pile foundation reinforcement cage precise positioning construction process

Abstract

The application relates to the technical field of building engineering construction, and particularly discloses a precise positioning construction process for a bridge pile foundation reinforcement cage, which comprises the following steps: S1, base assembly: four carrying grooves are assembled on the base, and the intersection points formed by the diagonal pull lines of the center points of the four carrying grooves coincide with the geometric center point of the base; each carrying groove is provided with an installation groove matched with the carrying concave-convex structure; S2, base placement: the geometric center of the base coincides with the center of the pile hole; S3, reinforcement cage installation: two lifting bars are fixed in the radial direction of the reinforcement cage, and a lifting ring is fixed at the top of each lifting bar; when the lifting ring is lowered to the height of the carrying groove along with the reinforcement cage, the carrying bar is passed through the lifting ring so that the lifting ring falls on the limiting groove of the carrying bar; then the carrying bar is placed on the carrying groove and fixed; then the lifting of the reinforcement cage is loosened, the reinforcement cage is hung on the carrying bar through the lifting ring, and the installation of the reinforcement cage is completed. The scheme is used to solve the problem that the bridge pile foundation reinforcement cage cannot be precisely positioned in the pile hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering construction, in particular to a bridge pile foundation reinforcement cage precise positioning construction process. BACKGROUND

[0002] At present, in the bridge pile foundation construction, the equipment tools and process methods used in the installation of pile foundation reinforcement cage and the installation of guide pipe during the pouring of pile foundation concrete are extremely simple, various in form and inconvenient to operate. Often, the installation of pile foundation reinforcement cage cannot be accurately positioned in the pile hole, and the reinforcement cage is seriously deviated after the pile foundation is formed, which seriously affects the subsequent pier construction, and the installation and disassembly of the guide pipe are inconvenient to operate, which causes difficulties in construction. SUMMARY

[0003] The present application aims to provide a bridge pile foundation reinforcement cage precise positioning construction process to solve the problem that the bridge pile foundation reinforcement cage cannot be accurately positioned in the pile hole.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] A bridge pile foundation reinforcement cage precise positioning construction process, comprising the following steps:

[0006] S1, base assembly: take a frame-shaped base with a size larger than that of the pile hole, the base includes at least two parallel bearing beams, two flat shoulder groove seats are fixedly installed on each of the two parallel bearing beams, the center distance of the two flat shoulder groove seats on the same bearing beam is equal to the diameter of the reinforcement cage, and the intersection formed by the diagonal lines of the center points of the four flat shoulder groove seats coincides with the geometric center point of the base; each flat shoulder groove seat is provided with an installation groove matched with the flat shoulder;

[0007] S2, base placement: transfer the base with the installed flat shoulder groove seat to the pile foundation position, adjust the position of the base until the geometric center of the base coincides with the center of the pile hole;

[0008] S3, reinforcement cage installation: hoist the reinforcement cage above the pile hole and gradually lower it into the pile hole, the reinforcement cage is radially fixed with two symmetrical lifting bars, the lifting bars are located at the top of the reinforcement cage, and the top of the lifting bar is fixed with a lifting ring; when the lifting ring is lowered to the height of the flat shoulder groove seat along with the reinforcement cage, take two flat shoulders, the middle part of each flat shoulder is provided with a limiting groove for placing the lifting ring, pass the two flat shoulders through the lifting ring respectively, and make the lifting ring fall on the limiting groove; then place the two ends of the flat shoulder on the installation grooves of the flat shoulder groove seats on the two bearing beams respectively, so that the limiting grooves on the two flat shoulders placed symmetrically about the center of the pile hole, and then fix and connect the flat shoulder and the flat shoulder groove seat; then loosen the lifting of the reinforcement cage, the reinforcement cage is hung on the flat shoulder through the lifting ring, and the installation of the reinforcement cage is completed.

[0009] The principle and advantages of the scheme are: in actual application, the diagonal pull lines of the four pole groove seats are fixed on the base, and the intersection point of the diagonal pull lines coincides with the geometric center of the base. The pole groove seats are used to install the poles. The center distance of the pole groove seats on the same bearing beam is the same as the diameter of the reinforcement cage. Therefore, the distance between the two poles is equal to the diameter of the reinforcement cage. The middle part of the pole is provided with a limiting groove. After the base is placed, the distance between the limiting grooves of the two poles is equal to the distance between the two hanging bars on the diameter of the reinforcement cage. The reinforcement cage is hung on the limiting groove by the hanging bar. The center of the reinforcement cage coincides with the center of the base. The center of the reinforcement cage coincides with the center of the pile hole. The center of the reinforcement cage coincides with the center of the pile hole. The accurate positioning of the reinforcement cage is realized. After the reinforcement cage is accurately positioned in the pile hole, the subsequent pile foundation pouring concrete will not be deviated.

[0010] In addition, the construction method adopted by the scheme is simple and convenient. After the lifting force on the reinforcement cage is removed, the reinforcement cage is hung on the limiting groove. Under the condition that the two hanging bars are symmetrical about the reinforcement cage and the limiting groove is symmetrical about the center of the pile hole, the reinforcement cage can automatically correct the position under the suspension of the pole after the lifting force is removed. The operation convenience and construction efficiency of the construction process are improved.

[0011] In addition, in the scheme, the pole is placed simply and quickly through the setting of the pole groove seat. The pole is limited through the design of the installation groove on the pole groove seat, so that the deviation of the pole during the process of suspending the reinforcement cage is avoided, and the positioning accuracy is affected. At the same time, the design of the limiting groove on the pole makes the process of placing the reinforcement cage on the pole simple and accurate.

[0012] Preferably, as an improvement, before the base is placed on the pile foundation position, a sleeper is placed on the pile foundation, and then the base is placed on the sleeper. The sleeper is placed horizontally and symmetrically, and the distance is suitable for placing the base.

[0013] Preferably, as an improvement, before the sleeper is placed, the soil around the pile hole is checked to ensure that the soil is compacted. If the soil is soft and not suitable for placing the sleeper, the soil is compacted or replaced to ensure that the sleeper can be placed stably.

[0014] Preferably, as an improvement, the load-bearing beam is provided with a long slot seat position adjusting hole, and the pole slot seat can be adjusted along the slot seat position adjusting hole and fixed on the slot seat position adjusting hole, so as to conveniently adjust the distance between the pole slot seats and the distance between the poles according to the construction requirements of the different reinforcement cages, ensure that the distance between the two poles is always equal to the diameter of the reinforcement cage, and improve the universality of the construction process without increasing the construction difficulty.

[0015] Preferably, as an improvement, the pole slot seat is provided with two mounting holes symmetrically arranged with respect to the mounting slot, the mounting holes can be aligned with the slot seat position adjusting hole, and the pole slot seat can be fixed on the slot seat position adjusting hole by inserting bolts into the mounting holes and the slot seat position adjusting hole and cooperating with nuts.

[0016] Preferably, as an improvement, the pole slot seat is further provided with a slot seat bolt hole, and the pole is provided with a pole bolt hole at a symmetric position at the two ends, the pole bolt hole can be aligned with the slot seat bolt hole, and the pole can be fixed and locked on the pole slot seat by simultaneously inserting a locking member into the pole bolt hole and the slot seat bolt hole.

[0017] Preferably, as an improvement, the base is square, and the base is fixed with a positioning column at each of the four corners, and the intersection point of the diagonal positioning piles is the geometric center point of the base frame. The square design of the base makes it easier for the center of the base to coincide with the center of the pole slot seat diagonal pull line and the center of the pile hole, thereby reducing the difficulty of placing the base.

[0018] Preferably, as an improvement, two limiting rings are fixed on each pole, and a limiting slot is formed between the two limiting rings on the pole.

[0019] Preferably, as an improvement, the method further comprises the following step: S4, conduit table installation: hoisting and placing the conduit table on the base, and fixing the conduit table on the base; the middle part of the conduit table is provided with two hinge plates, the two hinge plates are symmetrically arranged with respect to the center of the pile hole, each hinge plate is rotationally connected with the conduit table, and semicircular notches are formed in the two hinge plates, the two semicircular notches are surrounded to form a circular notch, and the circular notch is located at the center of the pile hole to facilitate the lowering of the conduit.

[0020] Preferably, as an improvement, the mounting slot is a semicircular groove. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a top plan view of the embodiment of the present application.

[0022] Figure 2 It is an elevation view of the connection relationship between the base and the pole slot seat in the embodiment of the present application.

[0023] Figure 3 It is an elevation view of the connection relationship between the pole and the hanging reinforcement in the embodiment of the present application.

[0024] Figure 4 is a front view of an embodiment of the present application.

[0025] Figure 5 is an A-A sectional view of Figure 4

[0026] Figure 6 is a B-B sectional view of Figure 4 DETAILED DESCRIPTION

[0027] The following is further explained in detail through a specific embodiment:

[0028] The reference signs in the attached drawings of the specification include: a sleeper 1, a base 2, a positioning pile 2.1, a groove seat alignment hole 2.2, a base pin hole 2.3, a pole groove seat 3, a groove seat pin hole 3.1, a mounting hole 3.2, a pole 4, a limiting ring 4.1, a pole pin hole 4.2, a pole pin 4.3, a conduit table 5, a hinge plate 5.1, a comb tooth hole steel plate 5.2, a conduit table pin hole 5.3, a conduit table pin 5.4, a casing 6, a reinforcement cage 7, a hanging bar 7.1, a conduit 8.

[0029] The embodiment is basically as shown in the attached Figures 1 to 6 The present application needs to use a sleeper 1, a base 2, a pole groove seat 3, a pole 4 and a conduit table 5. The number of the sleeper 1 is two, and the sleeper 1 is made of hard square wood. The specific structures of the base 2, the pole groove seat 3, the pole 4 and the conduit table 5 are as follows:

[0030] The base 2 is a square frame structure, and four edges are welded by channel steel, that is, a bearing beam in the embodiment. Four positioning piles 2.1 are welded and fixed on four corners of the base 2, and the positioning piles 2.1 are made of steel. The intersection points of the diagonal positioning piles 2.1 are the geometric center points of the frame of the base 2. On the front and rear symmetrical two bearing beams, two long strip-shaped groove seat alignment holes 2.2 are symmetrically arranged on the left and right of each bearing beam. There is a spacing between the left and right two alignment holes of each bearing beam. The base pin hole 2.3 is arranged in the middle of the bearing beam between the two groove seat alignment holes 2.2. The base pin holes 2.3 of the front and rear two bearing beams are used to fix the conduit table 5.

[0031] In combination with Figure 1 and Figure 2 ​​, the top of the pole groove seat 3 is provided with a mounting groove matched with the pole 4, the mounting groove is a semicircular groove in this embodiment, and a groove seat bolt hole 3.1 is arranged at the bottom of the mounting groove.

[0032] In combination Figure 1 and Figure 3 , the pole 4 is made of a circular seamless steel pipe and has two limiting rings 4.1 welded at the center of each pole 4, the limiting rings 4.1 are round steels, an annular limiting groove is formed between the two limiting rings 4.1, and the limiting groove is located at the center of the pole 4. One pole insertion hole 4.2 is arranged at each symmetrical end of each pole 4 and penetrates the axis of the steel pipe of the pole 4, the pole insertion hole 4.2 is aligned with the groove seat bolt hole 3.1, and the pole 4 is fixed and locked on the pole groove seat 3 by inserting a locking piece (such as a pole bolt 4.3 made of steel) into the pole insertion hole 4.2 and the groove seat bolt hole 3.1.

[0033] In combination Figure 1 , the guide pipe table 5 is in the shape of a rectangular frame and is welded by an I-beam and a channel steel, the long side is the I-beam, and the short side is the channel steel. The guide pipe table 5 is provided with two hinged plates 5.1 rotatably connected at the center of the top, the hinged plates 5.1 are made of steel plates with a thickness of 10 mm, each hinged plate 5.1 is provided with a semicircular notch, the two hinged plates 5.1 are combined to form a complete circular notch, the circular notch is located at the center of the pile hole to facilitate the lowering of the guide pipe 8, the diameter of the circular notch is the same as the diameter of the normal section of the guide pipe 8, and in this embodiment, the diameter of the circular notch is 300 mm.

[0034] The guide pipe table 5 is provided with a comb hole steel plate 5.2 welded at other positions of the top except the middle hinged plate 5.1, so that the operator can operate on the guide pipe table 5.

[0035] The guide pipe table 5 is provided with a comb hole steel plate 5.2 welded at other positions of the top except the middle hinged plate 5.1, so that the operator can operate on the guide pipe table 5.

[0036] A precise positioning construction process for a bridge pile foundation reinforcement cage includes the following steps:

[0037] Step one: placing the sleeper 1

[0038] After the pile foundation hole is formed and the inspection is passed, the reinforcement cage 7 can be installed. First, the soil around the casing 6 is inspected to ensure that the soil around is compact. If the soft soil is not suitable for placing the sleeper 1, ramming or soil replacement ramming treatment is adopted to ensure that the sleeper 1 can be placed stably and firmly. The sleeper 1 needs to be placed horizontally and symmetrically, and the distance is just suitable for placing the base 2.

[0039] Step two: base 2 assembly

[0040] Before use, the position of the pole groove seat 3 is adjusted and fixed first. According to the diameter of the reinforcement cage 7, the center distance of the left and right pole groove seats 3 on the same bearing beam is determined. The bolt is sequentially threaded through the groove seat adjustment hole 2.2, the pole groove seat 3 installation hole 3.2 from bottom to top, and the nut is sleeved, so that the pole groove seat 3 can move left and right within the range of the groove seat adjustment hole 2.2 to adjust the position. After ensuring that the center distance of the left and right pole groove seats 3 is just the diameter of the pile foundation reinforcement cage 7, the left and right pole groove seats 3 are symmetrically arranged, and the position is determined. After the position is determined, the nut is tightened, so that the pole groove seat 3 is firmly fixed on the base 2. The intersection point formed by the center points of the four pole groove seats 3 is the geometric center point of the base 2. Due to the design of the groove seat adjustment hole 2.2, the pole groove seat 3 can be adjusted to adapt to the construction of reinforcement cages 7 with different diameters.

[0041] Step three: base 2 placement

[0042] Before installation, the positioning pile 2.1 on the four corners of the base 2 is tied to the diagonal line to form a cross intersection point (i.e. the geometric center point of the base 2). Then the base 2 is hoisted and installed on the sleeper 1. Then the survey personnel perform stakeout of the pile hole center point, and manually adjust the position of the base 2 to make the cross intersection point coincide with the center position of the pile hole (the center point position after the subsequent pile foundation reinforcement cage 7 installation is completed will coincide with the cross intersection point). That is, by accurately controlling the position of the base 2, the center position of the subsequent pile foundation reinforcement cage 7 installation is controlled, and the accuracy of the center position of the pile foundation reinforcement cage 7 is ensured.

[0043] Step four: reinforcement cage 7 installation

[0044] The reinforcement cage 7 is installed by overlapping and welding a lifting bar 7.1 on each main bar on the symmetric two sides of the reinforcement cage 7. The top of the lifting bar 7.1 is bent into a circle and welded firmly to form a lifting ring. The pole 4 is passed through the lifting ring, and the two ends of the pole 4 are placed in the pole groove seat 3, thereby holding the reinforcement cage 7, and the positioning and installation of the reinforcement cage 7 are realized (the length L of the lifting bar 7.1 is set as pole 4 top elevation - pile foundation reinforcement cage 7 top elevation + overlapping and welding length).

[0045] Specifically, the reinforcing cage 7 is first hoisted by a crane to lower the pile hole, and the top of the reinforcing cage 7 is lowered to the position of the hole opening. When the hoisting bar 7.1 is welded and connected, the hoisting bar 7.1 is connected, and then the reinforcing cage 7 is continuously lowered. When the hoisting ring of the hoisting bar 7.1 is aligned with the flat shoulder 4 installation position, the flat shoulder 4 is passed through the hoisting ring of the hoisting bar 7.1, and then the flat shoulder 4 is fixedly installed in the flat shoulder groove 3 (that is, the flat shoulder 4 is fixed in position by passing the flat shoulder pins 4.3 through the flat shoulder pin holes 4.2, the groove pin holes 3.1, and the groove position holes 2.2 in sequence). Then the reinforcing cage 7 is completely lowered, so that the hoisting ring of the hoisting bar 7.1 is clamped in the limiting groove in the middle of the limiting ring 4.1 on the flat shoulder 4. The flat shoulder 4 bears the force of the reinforcing cage 7 on the base 2, and the reinforcing cage 7 is installed.

[0046] Step five: installation of the guide pipe platform 5

[0047] After the reinforcing cage 7 is installed, the guide pipe platform 5 is hoisted and placed on the base 2, and the guide pipe platform pin 5.4 is passed through the guide pipe platform pin hole 5.3 and the base pin hole 2.3 in sequence to fix the guide pipe platform 5 on the base 2.

[0048] Step six: installation and disassembly of the guide pipe 8

[0049] The normal section of the guide pipe 8 has a diameter of 300 mm and can smoothly pass through the circular gap with a diameter of 300 mm. The upper and lower joints of the guide pipe 8 have a diameter greater than 300 mm and cannot pass through the hinge gap with a diameter of 300 mm.

[0050] When the guide pipe 8 is installed, the hinge plate 5.1 is opened upward, the first section of the guide pipe 8 is hoisted and passed through the semicircular gap of the hinge plate 5.1, and then the top joint of the guide pipe 8 is lowered to the hinge plate 5.1. When the hinge plate 5.1 is closed to clamp the guide pipe 8, the second section of the guide pipe 8 is continuously hoisted and connected to the first section of the guide pipe 8. After the connection is completed, the guide pipe 8 is lifted slightly upward, the hinge plate 5.1 is opened upward again, and the guide pipe 8 is lowered. When the top joint of the second section of the guide pipe 8 is lowered to the hinge plate 5.1, the hinge plate 5.1 is closed again to clamp the guide pipe 8 (as shown in the state of FIG. 6), and the process is repeated in sequence until the installation of the guide pipe 8 is completed. Figure 4

[0051] During the concrete pouring process, when it is necessary to disassemble the guide pipe 8, the guide pipe 8 can be directly lifted upward. When the joint of the guide pipe 8 passes through the hinge plate 5.1, the hinge plate 5.1 can be directly pushed upward and passed through. After the joint of the guide pipe 8 passes through, the guide pipe 8 is lowered to clamp the guide pipe 8 on the circular gap of the hinge plate 5.1, and then the disassembly of the lifted pipe section is performed.

[0052] Step seven: disassembly of the device

[0053] ​After the pile foundation is perfused, the guide pipe 8 is pulled out first, then the guide pipe plug 5.4 at both ends of the guide pipe stand 5 is pulled out, and the guide pipe stand 5 is hoisted and removed. Then the lifting bar 7.1 is cut off by using a cutting device such as electric welding or a grinding machine, the carrying pole plug 4.3 is pulled out, and the carrying pole 4 is hoisted and removed. Then the base 2 and the sleeper 1 are hoisted and removed in sequence.

[0054] The whole construction process of the embodiment is simple and convenient to operate, and effectively solves the problem of inaccurate positioning of the pile foundation reinforcement cage 7, improves the operation convenience in the construction process, and effectively improves the construction quality and construction efficiency.

[0055] The above is only an embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A precise positioning construction process for a bridge pile foundation reinforcement cage, characterized in that, It comprises the following steps: S1, base assembly: take a frame-shaped base with a size larger than the size of the pile hole, the base contains at least two parallel load-bearing beams, two parallel load-bearing beams are fixedly installed with two carrying groove seats, the center distance of the two carrying groove seats on the same load-bearing beam is equal to the diameter of the reinforcement cage, and the diagonal line of the center points of the four carrying groove seats forms a cross point coinciding with the geometric center point of the base; each carrying groove seat is provided with an installation groove matched with the carrying concave-convex structure; S2, base placement: transfer the base with installed carrying groove seats to the pile foundation position, adjust the position of the base until the geometric center of the base coincides with the center of the pile hole; S3, reinforcement cage installation: hoist the reinforcement cage above the pile hole and gradually lower it into the pile hole, the reinforcement cage is radially fixed with two symmetrical lifting bars, the lifting bars are located at the top of the reinforcement cage, and the top of the lifting bar is fixed with a lifting ring; when the lifting ring is lowered to the height of the carrying groove seat along with the reinforcement cage, two carrying poles are taken, the middle part of each carrying pole is provided with a limiting groove for placing the lifting ring, the two carrying poles are respectively passed through the lifting ring and the lifting ring falls on the limiting groove; then the two ends of the carrying pole are respectively placed on the installation groove of the carrying groove seat on the two load-bearing beams, so that the limiting grooves on the two placed carrying poles are symmetrical about the center of the pile hole, then the carrying pole is fixedly connected with the carrying groove seat; then the lifting of the reinforcement cage is loosened, the reinforcement cage is hoisted on the carrying pole through the lifting ring, and the installation of the reinforcement cage is completed; S4, guide pipe platform installation: hoist and place the guide pipe platform on the base, and fix the guide pipe platform on the base; the middle part of the guide pipe platform is provided with two hinge plates, the two hinge plates are symmetrical about the center of the pile hole, each hinge plate is rotatably connected with the guide pipe platform, semicircular notches are formed on the two hinge plates, the two semicircular notches are surrounded to form a circular notch, and the circular notch is located at the center of the pile hole to facilitate the lowering of the guide pipe; S5, guide pipe installation; S6, after the pile foundation pouring is completed, the guide pipe is pulled out first, then the guide pipe platform bolts at both ends of the guide pipe platform are pulled out, the guide pipe platform is hoisted and removed; then the lifting bar is cut off by using a cutting device.

2. The construction process for precise positioning of a bridge pile cage according to claim 1, characterized in that, Before the base is placed on the pile foundation position, a sleeper is placed on the pile foundation, and then the base is placed on the sleeper; wherein the sleeper is placed horizontally and symmetrically, and the distance is just suitable for the placement of the base.

3. The construction process for precise positioning of a bridge pile cage according to claim 2, characterized in that, Before the sleeper is placed, the soil around the pile hole is checked to ensure that the soil around the pile hole is compacted, if there is soft soil that is not convenient for the placement of the sleeper, the soil is compacted or replaced to ensure that the sleeper can be placed stably.

4. The construction process for precise positioning of a bridge pile cage according to claim 1, characterized in that, The load-bearing beam is provided with a long strip-shaped groove seat position hole, and the carrying groove seat can be adjusted along the groove seat position hole and fixed on the groove seat position hole.

5. The construction process for precise positioning of a bridge pile cage according to claim 4, characterized in that, The carrying groove seat is provided with two installation holes symmetrical about the installation groove, the installation holes can be aligned with the groove seat position hole, and the carrying groove seat can be fixed on the groove seat position hole by inserting bolts into the installation holes and the groove seat position hole and cooperating with nuts.

6. The construction process for precise positioning of a bridge pile cage according to claim 5, characterized in that, The carrying groove seat is also provided with a groove seat bolt hole, and the carrying pole is provided with a carrying bolt hole at a symmetrical position of the two ends, the carrying bolt hole can be aligned with the groove seat bolt hole, and the carrying pole can be fixed and locked on the carrying groove seat by inserting a locking member into the carrying bolt hole and the groove seat bolt hole at the same time.

7. The construction process for precise positioning of a bridge pile cage according to any one of claims 1-6, characterized in that, The base is square, and four positioning columns are fixed on four corners of the base.

8. The precision positioning construction process of bridge pile reinforcement cage according to any one of claims 1-6, characterized in that, Two limiting rings are fixed on each carrying pole, and a limiting groove is formed between the two limiting rings.

9. The precision positioning construction process of bridge pile reinforcement cage according to any one of claims 1-6, characterized in that, The mounting groove is a semicircular groove.

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