Post-tensioning bonded prestress concrete composite beam and design and construction methods thereof

A technology of bonding prestressed and laminated beams, which is applied in the direction of joists, girders, trusses, etc., to achieve the effect of improving weather resistance

Active Publication Date: 2019-06-11
上海同吉建筑工程设计有限公司 +1
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  • Summary
  • 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-tensioning bonded prestress concrete composite beam and design and construction methods thereof
  • Post-tensioning bonded prestress concrete composite beam and design and construction methods thereof
  • Post-tensioning bonded prestress concrete composite beam and design and construction methods thereof

Examples

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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-tensioning bonded prestress concrete composite beam and a construction method thereof. According to the composite beam, in order to meet the use demands, post-tensioning unbounded prestress is applied to the whole beam after the composite beam is composited and formed. Compared with a traditional composite beam, a post-tensioning bonded prestress technology is adopted by the post-tensioning bonded prestress concrete composite beam, the characteristics that a lower composite structure is high in prefabricating degree and fast and convenient to construct are accorded, and the anti-cracking and anti-bending performance of components can also be improved. The post-tensioning prestress can be applied to the post-tensioning bonded prestress concrete composite beamafter whole construction, post-tensioning unbounded prestress tendons also have good anti-corrosion performance, thus the post-tensioning bonded prestress concrete composite beam is particularly suitable for structures with the high requirements for deformation control, bearing capacity and weather resistance and with the high-performance requirements for the large span and the heavy load, and the superiority of the fabricated structure can also be reflected while the design requirements are met.

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 Applications(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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