Post-tensioned bonded prestressed concrete composite beam and its design and construction method

Active Publication Date: 2022-01-07
上海同吉建筑工程设计有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bonded prestressed structure was proposed earlier, and it has matured so far. Although it is not as good as the mechanical properties of the bonded prestressed structure, its construction performance is better and its quality is relatively more reliable.

Method used

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  • Post-tensioned bonded prestressed concrete composite beam and its design and construction method
  • Post-tensioned bonded prestressed concrete composite beam and its design and construction method
  • Post-tensioned bonded prestressed concrete composite beam and its design and construction method

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Embodiment Construction

[0048] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0049] see figure 1 — Figure 4Provided is a post-tensioned prestressed concrete composite beam with bonding, the composite beam is post-tensioned to apply bonded prestress to the composite beam, and a layer of top layer is arranged on the top of the composite beam Longitudinal reinforcement 1, a layer of bottom longitudinal reinforcement 5 is provided at the bottom of the composite beam, a composite layer 2 is provided at the top of the composite beam, and two layers of tie bars are provided at the middle of the composite beam 7. Waist bars 3 are arranged at the lower end of the tie bars 7 in each layer, a number of bonded prestressed tendons 4 are arranged at the lower part of the composite beam, and hoops are arranged on the periphery of the composite beam Rib 6, the two ends of the post-tensioned bonded prestressed tendon 4 protrude out of the composite...

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Abstract

The invention relates to a post-tensioned prestressed concrete composite beam and a construction method thereof. The composite beam is a kind of post-tensioned non-post-tensioned beam applied to the entire beam after the composite beam is laminated and formed to meet the requirements of use. Bonded prestress. Compared with the traditional composite beam, it adopts post-tensioned bonded prestressing technology, which not only inherits the characteristics of high prefabrication and convenient construction of the lower composite structure, but also improves the crack resistance and bending resistance of the components. Because post-tensioned prestress can be applied after the overall construction and the post-tensioned unbonded prestressed tendons have good anti-corrosion performance, it is especially suitable for large-span and heavy-duty structures that require high deformation control, bearing capacity and weather resistance. In the structure with high performance requirements such as loading, it can also reflect the superiority of the assembled structure while meeting the design requirements.

Description

technical field [0001] The invention relates to the technical field of civil engineering design, in particular to a construction method of a multi-stage tensioned prestressed concrete composite beam with bonded and then tensioned in a large-span heavy-duty structure. Background technique [0002] In recent years, with the improvement of my country's construction technology, the corresponding construction level has also become higher and higher. There are new concepts and requirements in terms of architectural beauty, architectural quality, construction efficiency, green, low-carbon and energy-saving buildings, etc. However, the labor cost of manpower and the environmental impact control requirements during the construction process will also increase, which will not be a small test for the improvement of the construction level. The industrialization of construction has attracted more and more attention because its integrated production mode of design and construction can mee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/10E04G21/12
Inventor 熊学玉肖启晟汪继恕熊斌
Owner 上海同吉建筑工程设计有限公司
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