One-piece shrinkage joint forming structure and construction process of anti-collision wall

Abstract

The present invention belongs to the technical field of contraction joint construction, and specifically relates to an integrated contraction joint structure and construction process of a crash wall, including a contraction joint strip and a plurality of pads, wherein the plurality of pads are vertically fixed on the steel bars of the crash wall in sequence along the designed position of the contraction joint strip; an inwardly concave arc-shaped bayonet is provided at one end of the pad, and a card slot is provided at the other end, a perforation is provided in the middle of the pad, the arc-shaped bayonet is clamped on the steel bar, and the inner end of the contraction joint strip is clamped into the card slot; the contraction joint strip, the pad, and the steel bars of the crash wall are cast as one with concrete. The integrated contraction joint construction process of the present invention forms the crash wall and the contraction joint as one, which neither affects the function of the contraction joint nor requires waterproofing treatment in the later stage, while taking into account the aesthetics.

Description

Technical Field

[0001] The invention belongs to the technical field of contraction joint construction, and in particular relates to an integrated contraction joint forming structure of a crashproof wall and a construction process. Background Art

[0002] At present, the shrinkage joint construction of crash barriers all adopts the reverse grooving construction, and the cutting is carried out after the concrete is poured. The construction process is complicated, and the existing obvious shrinkage joints made later will also affect the aesthetics and waterproofness of the entire crash barrier. If the shrinkage joints are not waterproofed well, it will affect the quality of the entire crash barrier. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides an anti-collision wall shrinkage joint integrated molding structure and a construction process.

[0004] The present invention is achieved through the following technical solutions:

[0005] A one-piece shrinkage joint structure of a crash barrier, comprising a shrinkage strip, the shape of which matches the shape of the crash barrier; and a plurality of pads, which are vertically fixed in sequence on the steel bars of the crash barrier along the designed positions of the shrinkage strip; an inwardly concave arc-shaped snap-in is provided at one end of the pad, a snap-in groove is provided at the other end of the pad, a through hole is provided in the middle of the pad, the arc-shaped snap-in is snapped on the steel bars of the crash barrier, and the inner end of the shrinkage strip is snapped into the snap-in groove; the shrinkage strip, the pad, the steel bars of the crash barrier and the concrete are cast as one.

[0006] The shrinkage strip is made of polyolefin elastomer.

[0007] The cross-sectional shape of the inner end of the shrinkage strip is T-shaped, and the slot is a T-shaped slot corresponding to the shrinkage strip.

[0008] The spacers are spaced 15 cm apart.

[0009] A shrinkage joint integrated molding construction process comprises the following steps:

[0010] Step 1: Tie the steel bars of the crash wall;

[0011] Step 2: If there is no steel bar along the direction of the contraction joint at the designed contraction joint position, then steel bars corresponding to the contraction joint direction are laid out, and the laid out steel bars are tied together with the steel bars of the anti-collision wall in step 1; if there is steel bar along the direction of the contraction joint at the designed contraction joint position, no further steel bars are needed;

[0012] Step 3: A pad is fixed vertically at a certain distance on the steel bar corresponding to the shrinkage joint position, the arc-shaped clamp of the pad clamps the steel bar, the binding wire passes through the perforation to bind the pad to the steel bar, and then the inner end of the shrinkage joint strip is clamped into the pad slot in sequence;

[0013] Step 4: Install the anti-collision wall formwork, pour concrete, and remove the formwork after curing.

[0014] The present invention has the following beneficial effects:

[0015] (1) The anti-collision wall and the contraction joint of the present invention are integrally formed, and there is no need to separately produce the contraction joint later. This does not affect the function of the contraction joint, and there is no need for waterproofing treatment later, while taking into account aesthetics.

[0016] (2) The embedded contraction joint structure and method of the present invention overturns the traditional contraction joint cutting process and boldly innovates the embedded technology. The contraction joint is completed before pouring, rather than waiting for remedial treatment after the concrete is formed. This avoids the material waste of the traditional cutting process, saves engineering costs, and avoids the pollution caused by cutting, responding to the national call for green construction.

[0017] (3) The spacer block of the present invention has two functions: one is that it can accurately control the distance between the steel bars and the wall formwork of the crash barrier; the other is that it can fix the shrinkage strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a partial structural schematic diagram of the shrinkage strip of the present invention being inserted into the slot.

[0019] Figure 2 It is a schematic diagram of the cushion block structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the shrinkage strip structure of the present invention.

[0021] Figure 4 It is an enlarged structural schematic diagram of the shrinkage strip of the present invention being clamped into the clamping groove.

[0022] In the figure: 1 shrinkage strip, 2 cushion block, 3 arc-shaped bayonet, 4 slot, 5 perforation. DETAILED DESCRIPTION

[0023] Specific embodiments of the present invention are given below in conjunction with the accompanying drawings. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application belong to the protection scope of the present invention.

[0024] The shrinkage joint integrated structure of the crash barrier of the present invention comprises a plurality of pads 2, one end of the pad 2 is provided with an inwardly concave arc-shaped bayonet 3, the other end of the pad 2 opposite to the arc-shaped bayonet 3 is provided with a slot 4, and a perforation 5 is provided in the middle of the pad 2. The arc-shaped bayonet 3 is consistent with the size of the steel bars of the crash barrier, and the arc-shaped bayonet 3 is used to clamp the steel bars of the crash barrier. The perforation 5 is used to further fix the pad 2 on the steel bars of the crash barrier. Binding wires can be passed through the perforations 5 to firmly fix the pad 2 to the surrounding crash barrier steel bars. The pads 2 are fixed to the steel bars of the crash barrier at intervals along the designed shrinkage joint positions, and the pads 2 are perpendicular to the steel bars. Preferably, one pad 2 is fixed every 15 cm.

[0025] The present invention also includes a contraction strip 1, which is used to form a contraction seam of the crash barrier, so the shape of the contraction strip 1 matches the shape of the crash barrier. The contraction strip 1 is made of an elastic material, and in this embodiment, the contraction strip 1 is preferably made of a polyolefin elastomer. The inner end of the contraction strip 1 is clamped in the cushion block 2, and the outer end of the contraction strip 1 faces the direction of the crash barrier wall formwork, and is tightly attached to the crash barrier wall formwork. The slot 4 of the cushion block 2 is used to clamp the contraction strip 1, so the shape of the inner end of the contraction strip 1 matches the shape of the slot 4. The specific shape is not limited here, as long as it is a matching clamping structure. The preferred cross-sectional shape of the inner end of the contraction strip 1 in this embodiment is T-shaped, so the slot 4 of the cushion block 2 is also a T-shaped slot corresponding to the contraction strip 1, as shown in the attached Figure 2 and 3 shown.

[0026] The above-mentioned shrinkage strips 1, cushion blocks 2, and steel bars of the anti-collision wall are finally cast into one with the concrete.

[0027] Based on the integrated shrinkage joint structure of the crash wall of the present invention, the present invention proposes a new shrinkage joint construction process. Different from the existing process of post-production shrinkage joint, the shrinkage joint of the present invention is integrally formed with the crash wall, and no post-production cutting is required, and no waterproofing problem needs to be considered. The integrated shrinkage joint construction process of the present invention is described below, including the following steps:

[0028] Step 1: Tie up the steel bars of the crash barrier.

[0029] Step 2: After tying the steel bars of the crash barrier, if there are no steel bars along the contraction direction at the designed contraction joint position, it is necessary to lay steel bars corresponding to the contraction direction here, and the laid steel bars are tied together with the steel bars of the crash barrier in step 1; if there are steel bars along the contraction direction at the designed contraction joint position of the crash barrier, there is no need to lay new steel bars, that is, to ensure that there are steel bars in the same direction as the contraction joint along the designed contraction joint position, which are used to fix the pad 2 in the later stage, so that the pad 2 can be fixed along the designed contraction joint route, so that the contraction strip 1 can be fixed on the pad 2 along the designed contraction joint position.

[0030] Step three: vertically fix a pad 2 at a certain distance on the steel bars corresponding to the designed shrinkage joint position. First, use the arc-shaped clamping mouth 3 of the pad 2 to clamp the steel bars, and the steel bars are perpendicular to the plane of the pad 2. Then pass the binding wire through the through hole 5 of the pad 2 to further bind the pad 2 to the steel bars around the crash barrier. Firmly fix the pad 2 and the steel bars together. The binding wire can be iron wire or steel wire. Then, the inner end of the contraction strip 1 is inserted into the clamping groove 4 of the pad 2 in turn. Finally, the contraction strip 1 is fixed on the pad 2 along the designed contraction joint position to form a contraction joint.

[0031] Step 4: After the contraction strip 1 is fixed, start installing the anti-collision wall formwork. The inner side of the anti-collision wall formwork is close to the outer end of the contraction strip 1, and then pour concrete into the anti-collision wall formwork. The contraction strip 1, pad 2, and the steel bars of the anti-collision wall are poured as one with the concrete. Finally, after maintenance, remove the anti-collision wall formwork. The contraction strip 1 is the contraction joint of the anti-collision wall, forming a structure in which the anti-collision wall and the contraction joint are integrated.

[0032] The embodiment described above is only one of the more preferred specific implementations of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated shrinkage joint structure of an anti-collision wall, characterized in that: The invention comprises a contraction strip (1), the shape of which matches that of a crash wall; and a plurality of pads (2), which are fixed vertically on the steel bars of the crash wall in sequence along the designed positions of the contraction strip (1); one end of the pad (2) is provided with an inwardly concave arc-shaped snap-in (3), the other end of the pad (2) is provided with a snap-in groove (4), a through hole (5) is provided in the middle of the pad (2), the arc-shaped snap-in (3) is snap-fitted on the steel bars, and the inner side end of the contraction strip (1) is snap-fitted into the snap-in groove (4); the contraction strip (1), the pad (2), the steel bars of the crash wall and the concrete are cast as one body.

2. The shrinkage joint integrated structure of the anti-collision wall according to claim 1 is characterized in that: The shrinkage strip (1) is made of polyolefin elastomer.

3. The shrinkage joint integrated structure of the anti-collision wall according to claim 2 is characterized in that: The cross-sectional shape of the inner end of the contraction strip (1) is T-shaped, and the slot (4) is a T-shaped slot corresponding to the contraction strip (1).

4. The shrinkage joint integrated structure of the anti-collision wall according to claim 1 is characterized in that: The spacers (2) are spaced 15 cm apart.

5. According to claim 1 or 2, the shrinkage joint integrally formed structure of the anti-collision wall, a shrinkage joint integrally formed construction process comprises the following steps: Step 1: Tie the steel bars of the crash wall; Step 2: If there is no steel bar along the direction of the contraction joint at the designed contraction joint position, then steel bars corresponding to the contraction joint direction are laid out, and the laid out steel bars are tied together with the steel bars of the anti-collision wall in step 1; if there is steel bar along the direction of the contraction joint at the designed contraction joint position, no further steel bars are needed; Step 3: vertically fix a pad (2) at intervals on the steel bars corresponding to the shrinkage joint positions, the arc-shaped clamping opening (3) of the pad (2) clamps the steel bars, and the binding wire passes through the through hole (5) to bind the pad (2) to the steel bars, and then the inner ends of the shrinkage joint strips (1) are sequentially clamped into the clamping grooves (4) of the pad (2); Step 4: Install the anti-collision wall formwork, pour concrete, and remove the formwork after curing.

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