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Single-hole prefabricated hollow slab non-expansion-joint bridge and construction method thereof

A hollow slab and expansion joint technology, used in bridges, bridge parts, bridge construction, etc., can solve the problems of expansion joints prone to various diseases, alarming maintenance costs, atmospheric environment corrosion, etc. Improve the overall effect

Pending Publication Date: 2018-09-18
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the repeated action of long-term vehicle loads, as well as the corrosion of the atmospheric environment and the clogging of dust, these expansion joints are prone to various diseases and require regular maintenance and replacement.
The annual maintenance cost for this across the country is staggering, and the indirect losses caused by traffic interruption caused by bridge repairs are even greater

Method used

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  • Single-hole prefabricated hollow slab non-expansion-joint bridge and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Please refer to figure 1 As shown, a single-hole prefabricated hollow slab bridge without expansion joints includes an abutment 1, a prefabricated hollow slab 2, an end beam 3 and a steel bar 4 connecting the prefabricated hollow slab 2 and the end beam 3;

[0071] Described abutment 1 comprises platform cap 11 and is arranged on the pile foundation 12 below described platform cap 11, and the upper surface of described platform cap 11 is provided with bearing cushion stone 13, and the upper surface of described bearing cushion stone 13 is provided with There is a rubber cushion 14;

[0072] The prefabricated hollow slabs 2 are arranged side by side on the rubber pad 14 along the transverse bridge direction, the prefabricated hollow slabs 2 are provided with a plug plate 21 covering the cavity of the prefabricated hollow slab 2, and the plug plate 21 is set At the end of the prefabricated hollow slab 2, the prefabricated length of the end of the prefabricated hollow sla...

Embodiment 2

[0079] Please refer to figure 1 As shown, it is the same as other structures of the single-hole prefabricated hollow slab bridge without expansion joints in Embodiment 1, the difference is that the single-hole prefabricated hollow slab bridge without expansion joints also includes a rear wiring system 5, and the back wiring The system 5 comprises a horizontally arranged board 51 and a transition board 52, a base layer located below the board 51 and the transition board 52, and a backfill layer 55; one end of the board 51 and the end beam 3 The other end is connected and the board 51 is arranged on the upper surface of the EPS board 31, the upper surface of the board 51 is at the same height as the upper surface of the end beam 3, and the other end of the board 51 is connected to the upper surface of the EPS board 31. One end of the transition plate 52 is connected, and the other end of the transition plate 52 is connected to the external wiring surface 6. The base layer includ...

Embodiment 3

[0085] Please refer to figure 1 As shown, the present invention also provides a construction method for a single-hole prefabricated hollow slab bridge without expansion joints, comprising the following steps:

[0086]Step 1, carry out the construction of the abutment 1 cap 11, the pile foundation 12 and the support pad stone 13, and lay a rubber cushion 14 on the support pad stone 13 to play the role of a support;

[0087] Step 2. After hoisting all the prefabricated hollow panels 2 into place, build the plug plate 21, cast-in-place end beam 3, and install EPS board 31 on the end beam 3;

[0088] Step 3. After the concrete strength of the cast-in-place end beam 3 reaches the design strength, the hinge joint between the self-compacting concrete cast-in-place prefabricated hollow slabs 2 is used to form the concrete pavement layer 24, and the prestress of the diameter-adding beam 23 is reserved. channel;

[0089] Step 4, the prestressed reinforcement 231 is pierced in the pres...

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Abstract

The invention relates to the technical field of bridge construction, in particular to a single-hole prefabricated hollow slab non-expansion-joint bridge and a construction method thereof. The bridge comprises abutments, prefabricated hollow slabs, end crossbeams and reinforcing steel bars connecting the prefabricated hollow slabs with the end crossbeams. Each abutment comprises an abutment cap anda pile foundation arranged below the abutment cap. Support cushion stones are arranged on the upper surfaces of the abutment caps. Rubber spacers are arranged on the upper surfaces of the support cushion stones. The prefabricated hollow slabs are arranged on the rubber spacers side by side in the transverse bridge direction and provided with end cap boards for covering cavities of the prefabricated hollow slabs, wherein the end cap boards are arranged at the ends of the prefabricated hollow slabs. The bridge has the beneficial effects that the structural design is simple, the construction method is simple and convenient to implement, the end crossbeams in the transverse bridge direction can be cast in place at the ends of the prefabricated hollow slabs so that transverse prestress can beapplied to the solid portions of mid-span portions of the prefabricated hollow slabs, the transverse relation between the prefabricated hollow slabs is reinforced, and the integrity of the whole bridge is improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a single-hole prefabricated hollow plate bridge without expansion joints and a construction method thereof. Background technique [0002] Prefabricated hollow slab bridges are one of the most common types of small and medium-span highway bridges in Fujian Province, accounting for a large proportion. Traditional prefabricated hollow slab bridges have various degrees of damage, such as damage to hinge joints between prefabricated hollow slabs, stress on single slabs, damage to supports and expansion joints, and even falling beams, etc. For hollow slab bridges with large spans, These problems are even more prominent. According to statistics, nearly 80% of the prefabricated hollow slab bridges have the problem of hinged concrete damage and the disease is serious, causing the single slab to be stressed, which greatly affects the lateral distribution and integrity of the l...

Claims

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Application Information

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IPC IPC(8): E01D1/00E01D19/00E01D21/00
CPCE01D1/00E01D19/00E01D21/00
Inventor 林上顺李军张洁丰汤宇丘福连欧智菁
Owner FUJIAN UNIV OF TECH
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