A widening telescopic device for elevated reconstruction and expansion

Abstract

The utility model discloses a splicing widening telescopic device for elevated reconstruction and expansion, comprising two RG steels and two groups of anchor rings; the two RG steel openings are relatively symmetrically arranged, noise reduction water stop strips are installed inside the two RG steels, and three cavities are distributed in the noise reduction water stop strips; the lower end surface of the noise reduction water stop strip does not exceed the lower bottom of the RG steel; an elastic sealing strip is arranged between the RG steel and the noise reduction water stop strip, and the top of the elastic sealing strip does not exceed the top of the RG steel; each group of anchor rings includes a plurality of anchor rings; the plurality of anchor rings of each group are evenly distributed under the corresponding RG steel, and the inner side of the anchor ring does not exceed the inner part of the RG steel; when the splicing widening telescopic device is installed, the anchor ring is welded to the steel bar implanted in the notch. The utility model has no risk of water leakage, can offset the unevenness on both sides of the splicing widening seam, and has a long service life.

Description

Technical Field

[0001] The utility model relates to the field of road bridge supports, in particular to a widening type telescopic device used for elevated reconstruction and expansion. Background Art

[0002] With the development of my country's economy, the continuous improvement of urban planning, the improvement of viaduct entrances and exits, and the increase of on- and off-ramps, my country has continuously invested in the construction of transportation infrastructure, not only the construction of new roads, but also the widening of old roads. For the ramp bridges at the entrances and exits of viaducts, when the width of the old bridge is not enough to meet the traffic needs, it is necessary to build a new bridge on the side of the old bridge to widen it. The expansion joint device extending along the longitudinal direction is used to weakly connect the new and old bridges at the widening point. This process has the advantages of convenient construction, low cost, and fast construction period, and has become the main way to widen the new and old bridges.

[0003] The traditional widening joint has the following problems: (1) There is a gap between the old bridge and the new bridge, which is prone to collision and shaking when vehicles pass by, and there is a risk of collision and the possibility of vehicle loss of control; (2) The piers and beams of the old bridge are prone to uneven settlement, which is easy to form a height difference with the new bridge, causing damage to the telescopic device; (3) There is a tendency for water to leak between the old bridge and the new bridge, and rainwater leakage is easy to affect vehicles and pedestrians under the elevated road; (4) The widening telescopic device currently on the market has a short service life, loud noise, and is easy to break; (5) The rubber waterstop currently on the market is difficult to install; (6) The top of the waterstop of the widening joint on the market is uneven, which is easy to tip over when a bicycle passes by, posing a threat to the safety of the driver and endangering traffic safety. Therefore, a widening telescopic device for elevated reconstruction and expansion is proposed, which has no risk of water leakage, can offset the unevenness on both sides of the widening joint, and has a long service life. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the utility model provides a widening telescopic device for elevated reconstruction and expansion, which has no risk of water leakage, can offset the unevenness on both sides of the widening seam, and has a long service life. To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A widening telescopic device for elevated reconstruction and expansion, comprising two RG steel sections and two sets of anchor rings;

[0006] The two RG steel openings are relatively symmetrically arranged, and noise reduction waterstops are installed inside the two RG steels. Three cavities are distributed in the noise reduction waterstops. The lower end surface of the noise reduction waterstops does not exceed the lower bottom of the RG steel. The noise reduction waterstops are made of rubber strips.

[0007] An elastic sealing strip is placed between the RG steel and the noise reduction water stop strip, and the top of the elastic sealing strip does not exceed the top of the RG steel;

[0008] Each group of anchor rings includes a plurality of anchor rings; the plurality of anchor rings in each group are evenly distributed below the corresponding RG steel, and the inner side of the anchor ring does not exceed the inner side of the RG steel;

[0009] When the widening type telescopic device is installed, the anchor ring is welded to the steel bar embedded in the groove.

[0010] Preferably, the three cavities are respectively an inverted heart-shaped cavity and two circular cavities.

[0011] Preferably, two adjacent anchor rings are evenly distributed on the RG steel section at a spacing of 20 cm.

[0012] The beneficial effects of the utility model are:

[0013] 1. The traditional widening seam is prone to leakage when there is a lot of rain, but the noise reduction water stop of this patent is tightly spliced ​​with the RG steel, and the noise reduction water stop is filled with high elastic sealing material, so there is no risk of leakage;

[0014] 2. When the new bridge and the old bridge sink, the traditional joints are prone to damage. However, the noise reduction water stop strip of this patent has three cavities. When there is uneven height difference in the joints, buffer deformation can occur to offset the unevenness on both sides of the joints. At the same time, the high-elastic sealing material also has super high elasticity and can be deformed, which will not affect the structural strength of the joint-type telescopic device;

[0015] 3. The service life of the traditional joint-width expansion joints on the market is generally not long, and there are problems such as loud noise when vehicles pass by and easy damage to the rubber water stop. The joint-width expansion joint of this patent adopts 3 cavities, good ductility and long service life;

[0016] 4. The patented splicing-wide telescopic device has good flatness. When stretching or compression occurs in multiple directions, the internal cavity and the high-elastic sealing material on the surface can offset the deformation, thereby ensuring the surface flatness of this splicing-wide telescopic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a telescopic device in the prior art;

[0018] Figure 2 It is a schematic diagram of the position of the widening telescopic device of the utility model in the slot;

[0019] Figure 3 It is a structural schematic diagram of the utility model of the splicing width telescopic device;

[0020] In the figure, 1-rebar, 2-anchor ring, 3-RG steel, 4-high elastic sealing material, 5-noise reduction waterstop, 6-concrete, 7-existing waterstop. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, the conventional widening telescopic device adopts the structure of the common D80 modular telescopic device, the anchor ring is installed on the embedded steel bar 1, and then the concrete 6 is poured, specifically C50 steel fiber concrete, and the two ends of the existing water stop 7 are installed on the corresponding anchor rings, which has the following disadvantages:

[0022] 1. The conventional existing water stop strip 7 is used, which has poor water stop effect and is prone to water leakage. At the same time, the conventional rubber strip (the existing water stop strip 7) reciprocates up and down in the joint width joint, which is easy to cause the rubber strip to be damaged;

[0023] 2. When a bicycle passes by an ordinary widening telescopic device, the direction of the vehicle's travel is parallel to the opening direction of the seam, and the tire is easily stuck in the seam, causing a traffic accident.

[0024] In order to solve the above technical problems, Figure 2-Figure 3 The utility model discloses a widening telescopic device for elevated reconstruction and expansion, comprising two RG steels 3 and two groups of anchor rings 2;

[0025] The openings of the two RG steel sections 3 are relatively symmetrically arranged, and noise reduction water stop strips 5 are installed inside the two RG steel sections 3, and three cavities are distributed in the noise reduction water stop strips 5; the lower end surface of the noise reduction water stop strips 5 does not exceed the lower bottom of the RG steel section 3;

[0026] An elastic sealing strip is arranged between the RG steel 3 and the noise reduction waterstop 5. The top of the elastic sealing strip does not exceed the top of the RG steel. The elastic sealing strip adopts a highly elastic sealing material 4, and there is no risk of water leakage. At the same time, it avoids the tire from getting stuck in the seam and causing traffic accidents. This widening telescopic device does not have this hidden danger.

[0027] Each group of anchor rings 2 includes a plurality of anchor rings; the plurality of anchor rings in each group are evenly distributed below the corresponding RG steel 3, and the inner side of the anchor ring 2 does not exceed the inner side of the RG steel 3;

[0028] When the widening type telescopic device is installed, the anchor ring 2 is welded to the steel bar 1 embedded in the notch.

[0029] Preferably, the three cavities are respectively an inverted heart-shaped cavity and two circular cavities. The inverted heart-shaped cavity facilitates the compression of the noise reduction water stop 5 (rubber strip) when the telescopic device is compressed, so that the rubber strip is compressed along a certain path.

[0030] The two circular cavities are convenient for installing the rubber strip. When installing the rubber strip, the rubber strip can be squeezed so that the two wings of the rubber strip can be easily inserted into the RG steel.

[0031] Preferably, two adjacent anchor rings 2 are evenly distributed on the RG steel 3 at a spacing of 20 cm.

[0032] like Figure 2-Figure 3 As shown, the working principle and process of the utility model are as follows:

[0033] During the expansion and reconstruction of the elevated road, the steel bars 1 are first implanted in the reserved slots of the old bridge and the new bridge. After the steel bars 1 are implanted in the slots, the widened telescopic device is placed in the slots, the anchor ring 2 is welded to the steel bars 1, and then the concrete 6 is poured. After the concrete curing period is over, the noise reduction waterstop 5 is installed in the RG steel 3, and finally the high-elastic sealing material 4 is poured on the surface of the noise reduction waterstop 5.

Claims

1. A widening telescopic device for elevated reconstruction and expansion, characterized in that: Includes two RG steel sections and two sets of anchor rings; The two RG steel openings are relatively symmetrically arranged, and noise reduction water stop strips are installed inside the two RG steels. Three cavities are distributed in the noise reduction water stop strips; the three cavities are respectively an inverted heart-shaped cavity and two circular cavities; the lower end surface of the noise reduction water stop strip does not exceed the lower bottom of the RG steel; An elastic sealing strip is placed between the RG steel and the noise reduction water stop strip, and the top of the elastic sealing strip does not exceed the top of the RG steel; Each group of anchor rings includes a plurality of anchor rings; the plurality of anchor rings in each group are evenly distributed below the corresponding RG steel, and the inner side of the anchor ring does not exceed the inner side of the RG steel; When the widening type telescopic device is installed, the anchor ring is welded to the steel bar embedded in the notch.

2. The widening telescopic device for elevated reconstruction and expansion according to claim 1 is characterized in that: Two adjacent anchor rings are evenly distributed on the RG steel at a spacing of 20 cm.

3. The widening telescopic device for elevated reconstruction and expansion according to claim 1 is characterized in that: The noise reduction waterstop is made of rubber strips.

Images