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Method for designing lattice type steel reinforced concrete column

A steel-reinforced concrete, lattice technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as inability to accurately calculate bearing capacity

Pending Publication Date: 2021-01-05
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, since the structure of latticed steel reinforced concrete columns is different from that of simple steel reinforced concrete columns, the calculation methods in the above codes for conventional steel reinforced concrete columns cannot accurately calculate their bearing capacity

Method used

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  • Method for designing lattice type steel reinforced concrete column
  • Method for designing lattice type steel reinforced concrete column
  • Method for designing lattice type steel reinforced concrete column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: A method for designing latticed steel-reinforced concrete columns

[0039] The latticed concrete column can be regarded as the superposition of the inner core concrete and the outer reinforced concrete. The strength of the core concrete is improved due to the restraint of the panel, but from the test results, due to the limited compression area, the strength of the core concrete The increase is limited, resulting in a small bending moment contribution. To simplify the calculation model, some simple and reasonable assumptions are made as follows:

[0040] 1. Neglect the confinement effect of the concrete in the compression zone, and ignore the strength of the concrete in the tension zone.

[0041] 2. The influence of steel-concrete interaction is not considered.

[0042] 3. The L-shaped steel and longitudinal bars located in the compression zone are considered to yield in compression, and the rest of the L-shaped steel and longitudinal bars located in the te...

Embodiment 2

[0048] Example 2: Application of a method for designing lattice steel reinforced concrete columns

[0049] Use the method of four-point bending test, embodiment 1 and Abaqus program (finite element simulation) to carry out bending capacity M respectively LSRC Calculation of the flexural capacity M LSRC The object experiments of the calculation are lattice steel reinforced concrete columns and steel tube concrete columns;

[0050] Among them, such as Figure 1~2 As shown in , 6, the latticed steel reinforced concrete column includes concrete 1, a steel skeleton 2 inside the concrete, and a steel skeleton 3 inside the steel skeleton; A square reinforced skeleton; the steel skeleton 3 includes four pieces of L-shaped steel 6, and a number of panels 7 are connected between two adjacent pieces of L-shaped steel 6, so that the four pieces of L-shaped steel 6 can form a cube that is open up and down; The ribs 8 are located between two upper and lower adjacent panels 7, and the two ...

Embodiment 2～ Embodiment 4

[0061] Embodiment 2~Example 4 only changed the strength grade of concrete, and the rest of the data are consistent with that of Example 1. The flexural bearing capacity M calculated by the method of Example 1 and Abaqus finite element software is LSRC As shown in table 2.

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Abstract

The invention discloses a method for designing a lattice type steel reinforced concrete column, and belongs to the field of structural design of civil engineering. The invention provides the method for designing the latticed steel-reinforced concrete column, which comprises the following steps of: when the latticed steel-reinforced concrete column is designed by using the method, calculating the flexural capacity MLSRC of the latticed steel-reinforced concrete column by using a formula and alpha fcBx + fylAl + fyAsf'yA'sf 'yl (A'l + A'l) = 0; and adjusting the batten plate size, the steel bardiameter, the column section size or the concrete grade and other sizes of the lattice type steel-reinforced concrete column according to the calculated flexural capacity MLSRC.

Description

technical field [0001] The invention relates to a method for designing a lattice type steel-reinforced concrete column, which belongs to the field of structural design of civil engineering. Background technique [0002] Lattice steel reinforced concrete column is the vertical force member of the building. Such as Figure 1~2 As shown, the lattice-type steel-reinforced concrete column includes concrete 1, a steel skeleton 2 inside the concrete, and a steel skeleton 3 inside the steel skeleton. The steel skeleton 2 is surrounded by longitudinal bars 4, stirrups 5, and tie bars 8 The steel frame 3 includes four pieces of L-shaped steel 6, and a number of panels 7 are connected between two adjacent pieces of L-shaped steel 6, so that the four pieces of L-shaped steel 6 can form a cube with upper and lower openings, and the ties 8 It is located between two upper and lower adjacent panels 7, and the two ends of the tie bars 8 are connected with the stirrup bars 5. [0003] The f...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/23G06F119/14
CPCG06F30/13G06F30/23G06F2119/14
Inventor 邹昀丁杰夏雨王城泉张怡宁
Owner JIANGNAN UNIV
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