Segmental transverse unbonded prestressed assembled prefabricated hollow slab bridge structure and its construction technology

A technology of hollow slab bridge and construction technology, which is applied in the direction of bridges, bridge parts, bridge materials, etc., can solve the problems of large prestress loss and long force transmission path, and achieve high prestress efficiency, improved integrity, and easy replacement Effect

Active Publication Date: 2017-08-08
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The force transmission path is longer and the prestress loss is larger

Method used

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  • Segmental transverse unbonded prestressed assembled prefabricated hollow slab bridge structure and its construction technology
  • Segmental transverse unbonded prestressed assembled prefabricated hollow slab bridge structure and its construction technology
  • Segmental transverse unbonded prestressed assembled prefabricated hollow slab bridge structure and its construction technology

Examples

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Comparison scheme
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Embodiment Construction

[0032] Such as Figure 2-11 A segmental transverse unbonded prestressed assembled prefabricated hollow slab bridge structure, comprising a hollow slab 1 and a concrete layer 2 laid on the hollow slab, the hollow slab is composed of at least two hollow slabs 3 arranged in sequence , the gap between the webs 4 of adjacent hollow plates forms a hinge joint 5, and at least two adjacent hollow plates are connected by prestressed beams 6, and anchoring devices 7 are provided at both ends of the prestressed beams. The anchoring device of the present invention is an anchor. An anchor groove 8 is arranged on the bottom plate. The prestressed beam extends out of the anchor groove, and the anchor is fixed at the end of the prestressed beam. According to the design requirements of different working conditions, the prestressed beam Tension is carried out and finally tightened.

[0033] Such as Figure 2-9 As shown, that is, the prestressed beam passes through the bottom part of the I hol...

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Abstract

The invention discloses a segmental transverse unbonded prestressed assembled prefabricated hollow slab bridge structure and its construction technology. The structure includes a hollow slab and a concrete layer laid on the hollow slab. The hollow slab consists of at least It is composed of two hollow plates, and there is a hinge joint between the adjacent hollow plates. At least two adjacent hollow plates are connected by prestressed beams, and anchoring devices are provided at both ends of the prestressed beams. The invention also discloses the construction technology of the segmental transverse prestressed assembled prefabricated hollow plate structure. This section has a short transverse prestressing force transmission path, is easy to replace, has high prestressing efficiency, can improve the integrity of the hollow slab bridge, and is convenient for later maintenance.

Description

technical field [0001] The invention belongs to the technical field of construction, and in particular relates to a segmental transverse unbonded prestressed matching hollow plate structure, and also relates to a construction technique of the structure. Background technique [0002] The prefabricated hollow slab bridge is a type of bridge widely used in small and medium-span bridges in my country because of its simple design and convenient construction. The small hinged hollow slab bridges built in the early days generally suffered from damages such as hinge cracking, leakage, and pavement pits, and the large hinged bridges currently used still have defects. Transverse prestressing is widely used to strengthen such bridges. CN2014201921907 designed a new type of prefabricated hollow slab bridge, which applied transverse prestress during construction. During construction, prestress is applied along the full transverse width of the bridge, and the prestress is transmitted in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12E01D101/28
CPCE01D19/125E01D2101/28
Inventor 陈记豪朱倩裴松伟管俊峰钱晓军刘云陈震李晓克赵顺波张巍
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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