A Method of Improving Punching Shear Bearing Capacity of Concrete Expanded Foundation
A technology for extending the foundation and concrete, which is applied in the fields of infrastructure engineering, instruments, and electrical digital data processing. It can solve problems such as low cost, lower foundation steps, and the punching shear bearing capacity of the expanded concrete foundation does not meet the requirements, achieving low cost. , the effect of improving safety
Active Publication Date: 2018-03-30
STATE GRID CORP OF CHINA +4
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Problems solved by technology
[0006] The invention provides a method for improving the punching resistance of the expanded concrete foundation, which solves the problem of reducing the height of the foundation steps in the punching resistance method of the existing concrete expanded foundation, and the step width-to-height ratio of the expanded concrete foundation will exceed the specification limit; The height of the foundation steps and the punching shear bearing capacity of the expanded concrete foundation may not meet the technical requirements, and the technical effect of improving the safety of the foundation and lowering the cost is realized.
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Embodiment 1
[0029] See Figure 1-Figure 7 , The present invention proposes a method for improving the punching resistance of concrete expansion foundation, the method includes:
[0030] Step 1: Based on the size of the concrete expansion foundation, calculate the punching shear bearing capacity of the concrete expansion foundation;
[0031] Step 2: Based on the calculated punching shear bearing capacity of the concrete expansion foundation, judge whether the punching shear bearing capacity meets the requirements;
[0032] Step 3: When the punching shear bearing capacity of the concrete expansion foundation does not meet the requirements, it is preset to add stirrups to the concrete expansion foundation to make the punching shear bearing capacity of the concrete expansion foundation meet the requirements, and calculate the area and configuration of the stirrups that need to be increased Location range
[0033] Step 4: Based on the calculated stirrup area and configuration location range, add stir...
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The invention discloses a method for improving the punching bearing capacity of a concrete extended foundation. The method comprises the steps that 1, the punching bearing capacity of the concrete extended foundation is calculated based on the size of the concrete extended foundation; 2, whether the punching bearing capacity meets the requirement or not is judged based on the calculated punching bearing capacity of the concrete extended foundation; 3, when the punching bearing capacity of the concrete extended foundation does not meet the requirement, the situation that stirrups are added to the concrete extended foundation so that the punching bearing capacity of the concrete extended foundation can meet the requirement is preset, and the area and the collocating position range of the stirrups needing to be added are calculated; and 4, the stirrups are added to the concrete extended foundation based on the calculated area and the calculated collocating position range of the stirrups, and the technical effects that the safety of the foundation is improved, and the cost is low are achieved.
Description
Technical field [0001] The invention relates to the field of concrete expansion foundation design for building structure transmission lines, in particular to a method for improving the punching resistance bearing capacity of the concrete expansion foundation. Background technique [0002] With the acceleration of the construction of UHV power grids, the basic force of transmission line towers will also greatly increase. At present, the concrete expansion foundation is still one of the main forms of transmission line towers. When designing the concrete expansion foundation, we strictly abide by the current national industry standard "Technical Regulations for Overhead Transmission Line Foundation Design" (DL / T 5219-2005), which requires that the step width to height ratio does not exceed 2.5. In order to meet this requirement of the specification, it is necessary to increase the height of the floor steps, which will greatly increase the amount of foundation concrete, and an eccen...
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IPC IPC(8): E02D27/42G06F17/50G06Q50/06
CPCE02D27/42G06F30/13G06Q50/06
Inventor 刘汉霄李元齐王文广秦小亮尹磊焦听雷张利容罗金辉王刚顾朝阳
Owner STATE GRID CORP OF CHINA