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Post-tensioned co-tensioned prestressed concrete composite beams with bonding and their design and construction methods

A technology for bonding prestressed and concrete, applied in the direction of joists, girders, trusses, etc., to achieve the effect of increasing stiffness, increasing friction and occlusal force

Active Publication Date: 2022-01-14
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 co-tensioned prestressed concrete composite beams with bonding and their design and construction methods
  • Post-tensioned co-tensioned prestressed concrete composite beams with bonding and their design and construction methods
  • Post-tensioned co-tensioned prestressed concrete composite beams with bonding and their design and construction methods

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Embodiment Construction

[0054] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0055] see figure 1 — Figure 4A post-tensioned co-tensioned prestressed concrete composite beam with bonding, the composite beam is applied with bonding and bonding prestress to the composite beam by using pre-tensioning method and post-tensioning method, in the composite beam A layer of top longitudinal reinforcement 1 is provided on the top of the composite beam, a layer of bottom longitudinal reinforcement 6 is provided at the bottom of the composite beam, and a composite layer 2 is provided on the top of the composite beam. The middle part is provided with two layers of tie bars 8, and waist bars 3 are arranged at the lower end of each layer of tie bars 8, and several pre-tensioned prestressed tendons 5 are arranged at the bottom of the composite beam. The lower part is provided with several bonded prestressed tendons 4, or arranged between the pre-ten...

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Abstract

The invention relates to a co-tensioned prestressed concrete composite beam with post-tensioning and bonding and its design and construction method. A new type of prestressed composite beam with bonded and bonded prestress applied by pre-tensioning and post-tensioning processes. Compared with the traditional prestressed 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 has its unique advantages, which can improve the crack resistance of components Bending performance, stretching in batches to meet the structural needs of different periods, and can cooperate with the design of assembled integral prestressed node connections to enhance the integrity and seismic performance of the structure, especially suitable for large spans with high requirements for deformation control and bearing capacity In structures with high performance requirements such as heavy loads and heavy loads, it can also reflect the superiority of assembled structures 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): E04C3/26G06F30/13
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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