A prefabricated bridge pier installation and adjustment device

Abstract

This utility model relates to the field of bridge engineering, specifically a prefabricated bridge pier installation and adjustment device. It includes a prefabricated bridge pier, a sleeve fitted under the prefabricated bridge pier, and box-type brackets fixedly connected to the four sides of the sleeve. The box-type brackets are supported on three-way jacks, which are fixed to a supporting steel plate. The supporting steel plate is fixed to the pier cap. A lifting ring is pre-embedded at the top of the prefabricated bridge pier, and a grouting sleeve is pre-embedded at the bottom of the prefabricated bridge pier. The grouting sleeve is fitted onto pre-embedded reinforcing bars on the pier cap. After the prefabricated bridge pier achieves vertical and horizontal position adjustment through the jacking function of the three-way jacks, the synchronous descent of the jacks improves the accuracy and efficiency of bridge pier installation.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering, specifically to a prefabricated bridge pier installation and adjustment device. Background Technology

[0002] Prefabricated bridge pier structures generally have advantages such as high construction efficiency, reduced traffic and environmental impact, reduced on-site operations, savings in formwork materials and construction space, and avoidance of on-site construction pollution. However, certain problems also exist during use. Vertical and horizontal deviations are prone to occur during the hoisting and installation of bridge piers. The weight of the bridge piers makes manual adjustments time-consuming and affects the construction period. At the same time, multiple people are required to cooperate during the process, and the results are not ideal. Utility Model Content

[0003] To effectively solve the problems existing in the installation and adjustment process of prefabricated bridge piers, this utility model provides a prefabricated bridge pier installation and adjustment device.

[0004] An installation and adjustment device for prefabricated bridge piers includes a prefabricated bridge pier, a sleeve fitted under the prefabricated bridge pier, box-type brackets fixedly connected to the four sides of the sleeve, the box-type brackets supported on a three-way jack, the three-way jacks fixed to a support steel plate, the support steel plate fixed to a bearing platform, a lifting ring pre-embedded at the top of the prefabricated bridge pier, and a grouting sleeve pre-embedded at the bottom of the prefabricated bridge pier, the grouting sleeve fitted onto pre-embedded reinforcing bars on the bearing platform.

[0005] The ferrule is made of four ferrule steel plates fixedly connected together.

[0006] The exposed length of the pre-embedded steel bars is 15~30cm.

[0007] The supporting steel plate has a square ring structure. The distance between the inner ring edge of the supporting steel plate and the prefabricated bridge pier is 10~30mm, and the side length of the outer ring edge is 60cm greater than the cross-sectional width of the prefabricated bridge pier. The thickness of the supporting steel plate is 10~20mm.

[0008] The cross-sectional side length of the box-shaped bracket is 20~50cm.

[0009] The three-way jack is positioned at 2 / 3 of its lifting stroke, with a height of approximately 20-50cm, and the jack's lifting stroke is 10-30cm.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The three-way jack has the function of pushing in three directions: horizontal, vertical and horizontal. It not only avoids direct manual pushing operation, but also improves the safety of bridge pier installation and construction. 2. The prefabricated bridge piers achieve vertical and horizontal position adjustment through the jacking function of the three-way jacks, and the synchronous falling of the jacks improves the accuracy and efficiency of bridge pier installation. 3. The installation and adjustment device for this prefabricated bridge pier is easy to install, reasonably priced, and easy to promote. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a prefabricated bridge pier installation and adjustment device according to the present invention; Figure 2 This is a top view of the supporting steel plate of a prefabricated bridge pier installation and adjustment device according to the present invention. Figure 3 This is a side view of the sleeve steel plate of a prefabricated bridge pier installation and adjustment device according to the present invention; In the diagram: 1. Prefabricated pier; 2. Hoop steel plate; 3. Bolt; 4. Box bracket; 5. Three-way jack; 6. Support steel plate; 7. Embedded bolt; 8. Reserved hole; 9. Lifting ring; 10. Screw hole; 11. Pier; 12. Embedded steel bar; 13. Grouting sleeve. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] like Figures 1-3 As shown, a prefabricated bridge pier installation and adjustment device includes a prefabricated bridge pier 1, a sleeve fitted under the prefabricated bridge pier 1, the sleeve being composed of four sleeve steel plates 2 fixedly connected; box-type brackets 4 are fixedly connected around the sleeve, the cross-sectional side length of the box-type brackets 4 is 20~50cm, the box-type brackets 4 are supported on three-way jacks 5, the three-way jacks 5 are fixed on supporting steel plates 6, the supporting steel plates 6 are fixed on the pier cap 11, and lifting rings 9 are pre-embedded in the top of the prefabricated bridge pier 1. A grouting sleeve 13 is pre-embedded at the bottom of pier 1. The grouting sleeve 13 is fitted onto the pre-embedded steel bar 12 on the abutment 11. The exposed length of the pre-embedded steel bar 12 is 15~30cm. The cross-section of the prefabricated pier 1 is rectangular, with the length of the long side and the short side being 80cm~250cm. The side length of the abutment is 100cm~500cm. The three-way jack 5 is at 2 / 3 of its lifting stroke, with a height of about 20~50cm. The lifting stroke of the jack is 10~30cm.

[0014] The supporting steel plate 6 has a square ring structure. The distance between the inner ring edge of the supporting steel plate 6 and the prefabricated bridge pier 1 is 10~30mm. The side length of the outer ring edge is 60cm greater than the cross-sectional width of the prefabricated bridge pier 1. The thickness of the supporting steel plate 6 is 10~20mm.

[0015] In this embodiment, the prefabricated pier 1 has a cross-section of 150cm in length and 100cm in width. A retaining sleeve is fitted under the prefabricated pier 1. The retaining sleeve is composed of four retaining sleeve steel plates 2 fixedly connected together. Screw holes 10 are provided on both sides of the retaining sleeve steel plates 2. Adjacent retaining sleeve steel plates 2 are connected by bolts 3 passing through the screw holes 10 to form a retaining sleeve. The thickness of each retaining sleeve steel plate 2 is 15mm. A box-type bracket 4 is bolted to the retaining sleeve steel plates 2 by bolts 3. The spacing between the bolts 3 is 3~10cm. The box-type bracket 4 is supported by a support that is adjustable in three directions. The three-way jack 5 is fixed to the support steel plate 6. The support steel plate 6 is 15mm thick, with an inner ring length of 152cm and an inner ring width of 102cm, an outer ring length of 182cm and an outer ring width of 162cm. The support steel plate 6 with reserved holes 8 is connected as a whole by pre-embedded bolts 7 embedded in the pier cap 11, forming a prefabricated bridge pier installation and adjustment device that works together. The pier cap 11 is 350cm long, 200cm wide and 150cm high.

[0016] The aforementioned prefabricated bridge pier installation and adjustment device includes the following sequential steps: Step 1: Fabricate and install the foundation 11 Construct a foundation 11, which is cubic in shape, with a length of 350cm, a width of 200cm, and a height of 150cm; the foundation 11 contains pre-embedded bolts 7 and pre-embedded steel bars 12, the pre-embedded steel bars 12 being 15cm in length; Step 2: Fabricate and install 6 supporting steel plates A supporting steel plate 6 is fabricated and located on the pier cap 11. The supporting steel plate 6 has a thickness of 15mm, an inner ring length of 152cm, an inner ring width of 102cm, an outer ring length of 182cm, and an outer ring width of 162cm. The distance between the supporting steel plate 6 and the prefabricated pier 1 is 10mm. The supporting steel plate 6 with pre-drilled holes 8 is connected as a whole by pre-embedded bolts 7 embedded in the pier cap 11 and supported on the pier cap 11. Step 3: Fabrication of prefabricated bridge piers 1 Prefabricated bridge pier 1 is manufactured. The cross-section of prefabricated bridge pier 1 is rectangular, with a length of 150cm and a width of 100cm. Prefabricated bridge pier 1 includes a pre-embedded lifting ring 9 and a pre-embedded grouting sleeve 13. Step 4: Install the clamping steel plate 2 A retaining steel plate 2 is installed around the prefabricated bridge pier 1 using bolts 3. Sufficient pressure must be maintained between the installed retaining steel plate 2 and the prefabricated bridge pier 1.

[0017] Step 4: Install box-type brackets 4 A box-shaped bracket 4 is installed on the clamping steel plate 2. The box-shaped bracket 4 is bolted to the clamping steel plate 2 by bolts 3. The cross-sectional width of the box-shaped bracket 4 is 25cm, the width is 40cm, and the spacing between the bolts 3 is 3cm.

[0018] Step 5: Install the three-way jack 5 Install the three-way jack 5, which is supported on the support steel plate 6. The height of the three-way jack 5 is 45cm, and the jack is located in the middle of its stroke. The rated lifting stroke is 30cm.

[0019] Step Six: Install Prefabricated Bridge Piers 1 The prefabricated pier 1 is hoisted to the assembly position using lifting ring 9. The box-shaped bracket 4 on the prefabricated pier 1 is aligned and supported on the three-way jack 5. At the same time, the pre-embedded grouting sleeve 13 of the prefabricated pier 1 is aligned with the pre-embedded steel bar 12 of the pier cap 11. The distance between the bottom surface of the prefabricated pier 1 and the pier cap 11 is 20cm.

[0020] Step 7: Adjust the prefabricated bridge pier 1 The verticality and horizontal position of the prefabricated pier 1 will be adjusted by using three-way jacks 5 in three directions, and the jacks will be lowered simultaneously to make the prefabricated pier 1 fall into the predetermined position of the pier cap 11.

Claims

1. A prefabricated bridge pier installation and adjustment device, characterized in that, The system includes prefabricated piers, with a hoop fitted under the prefabricated pier. The four sides of the hoop are fixedly connected to box-type brackets, which are supported by three-way jacks. The three-way jacks are fixed to a supporting steel plate, which is fixed to the pier cap. The top of the prefabricated pier has a pre-embedded lifting ring, and the bottom of the prefabricated pier has a pre-embedded grouting sleeve, which is fitted onto the pre-embedded reinforcing bars on the pier cap.

2. The prefabricated bridge pier installation and adjustment device according to claim 1, characterized in that, The ferrule is made of four ferrule steel plates fixedly connected together.

3. The prefabricated bridge pier installation and adjustment device according to claim 1, characterized in that, The exposed length of the pre-embedded steel bars is 15~30cm.

4. The prefabricated bridge pier installation and adjustment device according to claim 1, characterized in that, The supporting steel plate has a square ring structure. The distance between the inner ring edge of the supporting steel plate and the prefabricated bridge pier is 10~30mm, and the side length of the outer ring edge is 60cm greater than the cross-sectional width of the prefabricated bridge pier. The thickness of the supporting steel plate is 10~20mm.

5. The prefabricated bridge pier installation and adjustment device according to claim 1, characterized in that, The cross-sectional side length of the box-shaped bracket is 20~50cm.

6. The prefabricated bridge pier installation and adjustment device according to claim 1, characterized in that, The three-way jack is positioned at 2 / 3 of its lifting stroke, with a height of approximately 20-50cm, and the jack's lifting stroke is 10-30cm.

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