Flexural bearing capacity designing method for frame beam adopting pre-stressed steel reinforced concrete structure

A technology of concrete structure and design method, applied in the direction of structural elements, elongated structural components for load-bearing, building components, etc., can solve the neglect of constraints, hidden dangers of engineering safety, and the inability of prestressed concrete beams to be used normally and their ultimate bearing capacity. Meeting structural requirements, etc.

Inactive Publication Date: 2012-08-29
TONGJI UNIV +1
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a design method for the flexural bearing capacity of frame beams of prestressed steel concrete structures, which solves the problem that the actual prestressed concrete beams ...

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  • Flexural bearing capacity designing method for frame beam adopting pre-stressed steel reinforced concrete structure
  • Flexural bearing capacity designing method for frame beam adopting pre-stressed steel reinforced concrete structure
  • Flexural bearing capacity designing method for frame beam adopting pre-stressed steel reinforced concrete structure

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0053] The long-term research of our research group shows that in prestressed steel concrete structures with complex constraints, the effective prestress in prestressed concrete beams is greatly reduced due to the influence of column anti-sway stiffness, so the actual prestressed concrete beams Normal use and ultimate bearing capacity cannot meet the structural requirements, which will cause safety hazards to the project. Therefore, a prestressed steel concrete structure design method based on complex constraints is considered to solve the above two requirements, thereby eliminating potential safety hazards. The present invention first proposes a new design method for the ultimate bearing capacity.

[0054] For the profile steel of the prestressed steel concrete frame beam, it is advisable to adopt full-type solid-web profile steel, and one side f...

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Abstract

The invention relates to a flexural bearing capacity designing method for a frame beam adopting a pre-stressed steel reinforced concrete structure and belongs to the field of civil engineering. The flexural bearing capacity designing method for the frame beam adopting the pre-stressed steel reinforced concrete structure is characterized in that when the frame beam adopting the pre-stressed steel reinforced concrete structure is designed, the influence on a flexural bearing capacity and bending moment of a front section of the frame beam caused by lateral restraint is considered; and by adopting a method that the calculation is influenced by the restraint during the structure construction, a new formula for calculating the flexural bearing capacity and the bending moment is provided. According to the design method disclosed by the invention, complex restraint conditions of the pre-stressed steel reinforced concrete structure and the influence on the calculation of the flexural bearing capacity of the front section of the frame beam caused by the restraint and distribution of the pre-stressed steel reinforced concrete structure are fully considered, so that the design of the structure better meets the requirement of an actual structure and better safety performance is obtained.

Description

technical field [0001] The invention relates to the design of the ultimate bearing capacity of a prestressed steel concrete structure, in particular to a design method for the bending bearing capacity of a frame beam of a prestressed steel concrete structure. Background technique [0002] The modern prestressed structural system refers to the prestressed structural system built with high-strength and high-performance materials, modern design methods and advanced construction techniques. one. It is widely used in large public buildings, large overhangs, large-span and heavy-duty industrial buildings, high-rise buildings, large and medium-span bridges, large special structures, TV towers, nuclear power plant containment shells, and offshore platforms. Prestressed steel concrete (PSRC) structure, as a new modern prestressed structure, can very effectively adapt to the development trend of modern architecture and meet the needs of modern structures. Applying prestress to the s...

Claims

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Application Information

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IPC IPC(8): G01N3/20E04C3/293
Inventor 熊学玉高峰熊斌李明
Owner TONGJI UNIV
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