Saddle-shaped spatial pre-stressed ring beam

A prestressed, saddle-shaped technology, applied in the direction of joists, girders, trusses, etc., can solve the problems of large tension and bending moment, insufficient stiffness of saddle-shaped space ring beams, etc., to improve stiffness, avoid premature buckling damage, Guarantee the effect of tensioning quality and safety

Active Publication Date: 2017-12-01
ARCHITECTURAL DESIGN & RES INST OF TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the shape characteristics of the saddle-shaped space structure and the circumferential horizontal force transmitted from the cable-membrane structure supported by the

Method used

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  • Saddle-shaped spatial pre-stressed ring beam
  • Saddle-shaped spatial pre-stressed ring beam
  • Saddle-shaped spatial pre-stressed ring beam

Examples

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Embodiment Construction

[0029] Take a stadium project as an example to illustrate the saddle-shaped space prestressed ring beam involved in the present invention.

[0030] ①First, arrange a number of inner ring straight columns 5 and outer ring oblique columns 6 equally, high from east to west and low from north to south, such as figure 1 , figure 2 , Image 6 Shown. The maximum height of the inner ring column 5 and the outer ring column 6 is 38.5 meters, the minimum is 22.7 meters, the inner ring column 5 has a maximum height difference of 15.8 meters, and the outer ring column 6 has a maximum height difference of 15.8 meters. The spacing is 20 meters, the spacing of each outer ring diagonal column 6 is 22 meters, the minimum distance between the top of the inner ring straight column 5 and the top of the outer ring diagonal column 6 is 10 meters, the bottom of the inner ring straight column 5 and the outer ring diagonal column The minimum distance of bottom 6 is 16 meters.

[0031] ② Then set the saddl...

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Abstract

The invention relates to a saddle-shaped spatial pre-stressed ring beam. The saddle-shaped spatial pre-stressed ring beam consists of an inner ring beam, an outer ring beam and radial beams, wherein the inner ring beam is connected with the outer ring beam through the radial beams; the inner ring beam is a multi-span uniform-section continuous variable-elevation pre-stressed concrete beam; the outer ring beam is a multi-span uniform-section continuous variable-elevation reinforced concrete beam; the radial beams are single-span uniform-section horizontal reinforced concrete beams; curve pre-stressed tendons, straight-line pre-stressed tendons and regular reinforcements are arranged in the inner ring beam in a ring-shaped manner; the pre-stressed tendons and the regular reinforcements of the inner ring beam are arranged in the way that after arrangement of the regular reinforcements, the straight-line pre-stressed tendons are uniformly arranged along the periphery of the beam section at first within the range of a reinforcement cage formed by the regular reinforcements, and then the curve pre-stressed tendons are arranged between the straight-line pre-stressed tendons at the top layer; the inner ring beam and the outer ring beam are connected with a lower concrete structure through cast-in-place reinforced concrete beam-column joints; a cable-membrane structure and a spatial saddle-shaped ring beam are connected through a sliding hinged support; and the sliding hinged support realizes radial horizontal constraint release and circumferential horizontal constraint preservation.

Description

Technical field [0001] The invention belongs to the technical field of structural engineering prestress, and particularly relates to a saddle-shaped spatial prestress ring beam. Background technique [0002] With the large-scale construction of large-span spatial structures, the application of prestressed beams has gradually increased. In civil building structures, prestressed ring beams are generally used in circular buildings, and prestressed ring beams are mostly on the same horizontal plane. After such ring beams are formed as a whole, they have greater rigidity. After increasing the prestress There will be no redistribution of large internal forces and no secondary bending moments to ring beams and other structures. However, the saddle-shaped space prestressed ring beam is a multi-span uniform cross-section continuous variable elevation prestressed concrete beam. Although the appearance is beautiful and the force transmission is clear, the overall rigidity of the saddle-sha...

Claims

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Application Information

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IPC IPC(8): E04C3/26E04G21/12
CPCE04C3/26E04G21/121
Inventor 蒋炳丽庄艺斌杨霄赵天文朱朵娥王力
Owner ARCHITECTURAL DESIGN & RES INST OF TSINGHUA UNIV
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