High-density polyethylene (HDPE) double-wall corrugated pipe cylinder template

Abstract

An HDPE double-wall corrugated pipe cylinder formwork is characterized in that a left half HDPE double-wall corrugated pipe and a right half HDPE double-wall corrugated pipe are spliced to form a circular pipe structure, and the circular pipe structure is matched with a cylinder in size; a sealing strip is adhered to a seam of the circular tube structure, and the outer side of the circular tube structure is reinforced through a vertical ridge and an annular hoop; the annular hoop comprises an annular body, angle plates are fixed to the two ends of the annular body and connected through telescopic assemblies, and the size of the annular hoop is adjusted. According to the HDPE double-wall corrugated pipe cylindrical formwork, the HDPE double-wall corrugated pipe made of HDPE is adopted, the product structure is unique, the outer wall is of an annular corrugated structure, good impact resistance is achieved, and concrete vibration is facilitated. Meanwhile, the HDPE double-wall corrugated pipe is convenient to connect, the construction cost can be reduced, the construction period can be shortened, and the problems that a traditional wood mold is poor in construction quality, time-consuming and small in turnover frequency, and a shaping steel mold body is high in manufacturing cost, large in dead weight and the like can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a template, in particular to a HDPE double -walled corrugated pipe cylinder template, be applicable to high -type reinforced concrete cylinder. BACKGROUND

[0002] At present, with the rapid development of city construction, the design of high -type reinforced concrete cylinder appears more and more in large -scale public building. When the construction of high -type cylinder is carried out, the traditional wood mould and the fixed steel mould system have some shortcomings, for example, wood mould construction quality is poor, time -consuming, fixed steel mould cost is high, and the weight is heavy. SUMMARY

[0003] The utility model provides a HDPE double -walled corrugated pipe cylinder template, adopts HDPE material and has excellent chemical stability, the performance of ageing resistance and environmental stress cracking resistance can use long period, and the outer wall is annular corrugated structure, greatly strengthens the ring rigidity of pipe material, guarantees high quality, low cost, and the weight is lighter than the fixed steel mould before, and the construction is more convenient.

[0004] To solve the above technical problem, the technical scheme adopted by the utility model is:

[0005] A kind of HDPE double -walled corrugated pipe cylinder template, left and right two half corrugated pipes are spliced into pipe structure, and the size of pipe structure is matched with cylinder;Sealing strip is pasted at the joint of pipe structure, and the outside of pipe structure is reinforced by vertical beam and annular hoop;

[0006] The annular hoop includes annular body, and gusset plate is fixed at both ends of the annular body, and the gusset plate is connected and adjusted by telescopic assembly.

[0007] The corrugated pipe is HDPE double -walled corrugated pipe.

[0008] The sealing strip is sponge strip.

[0009] The telescopic assembly includes threaded sleeve, and the left and right inner threads of threaded sleeve are opposite and are respectively connected with right-hand screw rod and left-hand screw rod;Right-hand screw rod and left-hand screw rod are fixed to corresponding gusset plate at the other end.

[0010] A group of outer liners are arranged between the corrugated pipe and vertical beam, and the outer liner is composed of two half cylindrical corrugated pipes, and the two half cylindrical corrugated pipes are spliced and wrapped outside the corrugated pipe;And the joint of outer liner and the joint of corrugated pipe are arranged at 90 degrees.

[0011] The utility model provides a HDPE double -walled corrugated pipe cylinder template, with the following technical effects:

[0012] 1) The new HDPE double-wall corrugated pipe replaces the traditional wooden and fixed steel molds as the formwork material for tall cylindrical columns. The HDPE pipe uses U-shaped steel strip composite PE material, which has greater ring stiffness and stronger impact resistance without increasing costs. At the same time, the HDPE double-wall corrugated pipe has a smooth inner surface, is lightweight, and is easy to assemble and disassemble. It also has good strength and rigidity, effectively solving the drawbacks of traditional formwork materials in the construction process of tall and large reinforced concrete cylindrical columns, and has strong practicality.

[0013] 2) HDPE double-wall corrugated pipe is used as template, resulting in fewer joints in the cylindrical forming process, no horizontal joints within a height of 6m, high flatness, and tight vertical joints.

[0014] 3) HDPE double-wall corrugated pipe cylindrical formwork has stable performance, is resistant to acids and alkalis, corrosion resistant, does not deform when exposed to water, and has a high material turnover rate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a top view (first type) of the present invention.

[0017] Figure 2 This is the front view of the present invention.

[0018] Figure 3 This is a partially enlarged schematic diagram of the bolt locking part in this utility model.

[0019] Figure 4 This is a top view (second type) of this utility model.

[0020] In the diagram: 1. Corrugated pipe; 2. Vertical rib; 3. Circular hoop; 4. Bolt lock; 5. Sealing strip; 6. Formwork support; 7. Column. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-3 As shown, an HDPE double-wall corrugated pipe cylindrical formwork includes a corrugated pipe 1. The corrugated pipe 1 is made of HDPE double-wall corrugated pipe, which has excellent chemical stability, aging resistance, and environmental stress cracking resistance, and is low in cost, saving construction costs. The corrugated pipe 1 is composed of two pieces joined together to form a circular pipe structure, and the dimensions of the circular pipe structure match those of the cylindrical column 7. Sealing strips 5 are affixed to the joints of the circular pipe structure. The sealing strips 5 are made of sponge strips to prevent grout leakage. Multiple sets of vertical ribs 2 are distributed circumferentially on the outer side of the circular pipe structure. The vertical ribs 2 are made of square wood and arranged along the axial direction of the circular pipe structure. Multiple sets of annular hoops 3 are spaced from top to bottom on the outer side of the vertical ribs 2, and the annular hoops 3 serve as horizontal constraints.

[0023] Preferably, the ring-shaped hoop 3 comprises a ring-shaped body 3.1 which is processed from reinforcing steel, and two angle plates 3.2 which are fixed at both ends of the ring-shaped body 3.1 and are processed from angle steel and welded with the ring-shaped body 3.1. A right-hand screw rod 3.3 and a left-hand screw rod 3.4 are respectively welded on the two angle plates 3.2, and the rotation directions of the right-hand screw rod 3.3 and the left-hand screw rod 3.4 are opposite. Threaded sleeves 3.5 are respectively threadedly connected with the right-hand screw rod 3.3 and the left-hand screw rod 3.4.

[0024] Preferably, a formwork support 6 is arranged outside the HDPE double-wall corrugated pipe cylindrical formwork, and the formwork support 6 is connected with a full-frame scaffold to improve the overall stability of the formwork system.

[0025] Working principle and process:

[0026] 1) According to the design requirements of the cylinder 7, the required size and spacing of the vertical studs 2 on the corrugated pipe 1 and the vertical spacing of the adjacent ring-shaped hoops 3 are calculated, and a layout drawing is drawn.

[0027] 2) According to the layout drawing, a cylindrical corrugated pipe 1 is pre-divided into two pieces by a toothless saw. In the height direction, the full height of the formwork is determined according to the net height of the cylinder 7 and the beam position, and the formwork is cut off. The release agent is brushed.

[0028] 3) The two pieces of the corrugated pipe 1 are spliced, and sealing strips 5 are pasted at the joints. According to the design requirements of the specifications and spacing, square timbers are arranged as vertical studs 2 outside the cylindrical formwork. At the same time, the ring-shaped hoops 3 are arranged as horizontal constraints according to the design vertical spacing. At the same time, the sweep rods and all horizontal rods of the formwork support 6 are connected to the same horizontal side by using fasteners to form a cross-shaped support system. The system is connected with the surrounding formwork support system to be stable and firm.

[0029] Example 2

[0030] As shown in Figure 4 the difference from Example 1 is that another set of outer lining 1.1 is arranged between the corrugated pipe 1 and the vertical stud 2. The outer lining 1.1 is also composed of two half-cylindrical corrugated pipes, which are wrapped outside the corrugated pipe 1 after splicing. The joint of the outer lining 1.1 and the joint of the corrugated pipe 1 are arranged at 90 degrees. In this way, not only the overall strength of the formwork can be enhanced, but also the double-layer structure can further prevent leakage.

[0031] In addition, a plurality of compression springs 3.1 are arranged on the inner wall of the ring-shaped hoop 3. After the ring-shaped hoop 3 is installed, the compression springs 3.1 are pressed against the outer lining 1.1, which can further support and press the outer lining 1.1 and the corrugated pipe 1.

Claims

1. An HDPE double-wall corrugated pipe cylindrical form, characterized by: Two half corrugated pipes (1) are spliced to form a circular pipe structure, the size of the circular pipe structure matches that of the cylinder (7); a sealing strip (5) is pasted at the joint of the circular pipe structure, and the outer side of the circular pipe structure is reinforced by vertical beams (2) and annular hoops (3); The annular hoop (3) comprises an annular body (3.1), and angle plates (3.2) are fixed at both ends of the annular body (3.1); the angle plates (3.2) are connected and the size of the annular hoop (3) is adjusted by the telescopic assembly.

2. A HDPE double-wall corrugated pipe cylindrical formwork according to claim 1, characterized in that: The corrugated pipe (1) is an HDPE double-wall corrugated pipe.

3. A HDPE double-wall corrugated pipe cylindrical form according to claim 1, characterized in that: The sealing strip (5) is a sponge strip.

4. The HDPE double-wall corrugated pipe cylindrical form of claim 1, wherein: The telescopic assembly comprises threaded sleeves (3.5), the left and right inner threads of the threaded sleeves (3.5) are opposite in rotation direction and are respectively threadedly connected with right-rotation screws (3.3) and left-rotation screws (3.4); the other ends of the right-rotation screws (3.3) and the left-rotation screws (3.4) are fixed to the corresponding angle plates (3.2).

5. The HDPE double wall corrugated pipe cylindrical formwork according to claim 1, characterized in that: A set of outer liners (1.1) are additionally arranged between the corrugated pipe (1) and the vertical beams (2), the outer liners (1.1) are composed of two half-cylindrical corrugated pipes, and the two half-cylindrical corrugated pipes are wrapped outside the corrugated pipe (1) after splicing; and the joint of the outer liner (1.1) is arranged at a 90-degree angle with the joint of the corrugated pipe (1).

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