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Prestressed cable foundation design method for large-span space structure

A technology of spatial structure and design method, applied in calculation, special data processing applications, instruments, etc., can solve engineering safety hazards, normal use and ultimate bearing capacity of prestressed cable foundations cannot meet structural requirements, and there is no detailed distinction between different stages Structural analysis models and calculation methods and other issues, to achieve the effect of outstanding safety performance

Active Publication Date: 2012-08-29
TONGJI UNIV +2
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Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a design method for the prestressed cable foundation in a large-span space structure, which solves the problem that the current design method does not fully consider the superstructure and The mutual mechanism between the foundations, and the structural analysis models and calculation methods of different stages are not distinguished in detail, resulting in the fact that the normal use and ultimate bearing capacity of the actual prestressed cable foundation cannot meet the structural requirements, and bring safety hazards to the project.

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  • Prestressed cable foundation design method for large-span space structure
  • Prestressed cable foundation design method for large-span space structure
  • Prestressed cable foundation design method for large-span space structure

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Embodiment Construction

[0029] The present invention will be further explained below in conjunction with specific embodiments and drawings.

[0030] The overall structure of the large-span space structure is composed of three sub-structures: the upper structure, the foundation and the cable. The upper structure is composed of rod elements and beam elements, and the elastic stiffness matrices of the rod elements and beam elements are respectively used in the calculation. Throughout the construction and use phases, the work of the superstructure is in the elastic phase, and the cables are in close contact with the superstructure and foundation at the bottom.

[0031] The basic equation of the overall structure at all stages is:

[0032] [K i ]{U i }={P i };

[0033] Where [K i ]——The total stiffness matrix of the i-th stage;

[0034] {U i }——Displacement vector of the i-th stage;

[0035] {P i }——Load vector of the i-th stage.

[0036] The force of a large-span space structure is multi-stage, including the initi...

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Abstract

The invention relates to a prestressed cable foundation design for a large-span space structure, belonging to the field of civil engineering. A prestressed cable foundation design method for the large-span space structure is disclosed by the invention, which changes the current situation that the foundation and upper part of the current large-span space structure are designed separately, establishes a simplified design method for the prestressed concrete foundation tie beam of the large-span space structure in consideration of the interaction between the upper structure and the foundation, fills in the blank in the foundation design of the large-span space structure, and develops an interaction analysis method for the foundation and the upper structure of the large-span space structure. Based on this, the designed structure fully considers the mutual mechanism between the upper structure and the foundation of the large-span space structure in each stage of construction, normal usage and bearing, and also distinguishes the structure analysis model and calculation method in different stages in detail so as to meet the requirement of the practical structure more and have better safety performance.

Description

Technical field [0001] The invention relates to the field of civil engineering design, in particular to a method for designing a prestressed cable foundation in a large-span space structure. Background technique [0002] At present, in large-span space structure engineering, the design method of separating the superstructure, foundation and foundation is still generally adopted. In fact, any building is composed of these three parts. As a whole, these three parts work together, interconnect and influence each other. Separating the three to design and calculation is different from the actual working conditions, which will inevitably cause large errors. [0003] The superstructure and the foundation work together to treat the superstructure, the foundation and the foundation (pile foundation including piles) as a whole. While satisfying the static balance conditions, it also satisfies the foundation, foundation and superstructure. Deformation coordination conditions of contact part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 熊学玉王亦杨敬平熊斌李明葛斌张刚柴俊芳
Owner TONGJI UNIV
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