Method for calculating yield bearing capacity of post-tensioned ribbed angle steel assembly type frame joint
A calculation method and technology of bearing capacity, applied in the direction of instruments, geometric CAD, electrical digital data processing, etc., can solve problems such as complex calculation process, and achieve the effect of high calculation accuracy, simple form, and clear concept
Active Publication Date: 2020-09-15
NANTONG UNIVERSITY
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[0004]
The purpose of the present invention is to provide a method for calculating the yield bearing capacity of post-tensioned ribbed angle steel assembled frame joints in order to address the existing calculation method only for non-stiffened rib angle steel, the calculation process is complicated, and iterative calculation is required. The calculation formula The form is simple, the concept is clear, the calculation accuracy is high, and complex iterative calculations are avoided, which is convenient for engineering designers to design and calculate, and improves design efficiency
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[0040] specific implementation plan
[0041] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0042] like Figure 1-2 As shown, taking a typical post-tensioned unbonded ribbed angle fabricated frame joint as an example, its yield bearing capacity M y :
[0043] m y = M ay +M p (I)
[0044] In the formula, M ay , M p --The bearing capacity provided by ribbed angle steel 1 and prestressed steel strand 2 respectively.
[0045] In formula (I), the bearing capacity M provided by ribbed angle steel 1 ay Calculate according to the following formula:
[0046]
[0047]
[0048] In the formula, χ--the bearing capacity increase coefficient of ribbed angle steel 1, 2 for single rib and 3 for double rib;
[0049] f ay , F' ay --respectively, the tensile and compressive yield bearing capacity of the ribless angle steel;
[0050] f ay =(0.035t a +0.74)V p ;
[0051] V p -- is the plastic ...
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The invention discloses a method for calculating the yield bearing capacity of a post-tensioned ribbed angle steel assembly type frame joint. The method comprises the following steps that 1, collecting basic parameters of a post-tensioned unbonded ribbed angle steel assembly type frame; 2, according to the stress balance of the cross section of the beam, respectively calculating bearing capacitiesMay and Mp provided by the ribbed angle steel and the prestressed steel strand; and 3, calculating the yield bearing capacity My of the post-tensioned unbonded ribbed angle steel fabricated frame joint. The calculation formula is simple in form, clear in concept and high in calculation precision, and complex iterative calculation is avoided, and design and calculation of engineering designers arefacilitated, and the design efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of prefabricated buildings of industrial and civil building structures, and in particular relates to a method for calculating the yield bearing capacity of post-tensioned unbonded ribbed angle steel prefabricated frame nodes. Background technique [0002] Prefabricated buildings are the development direction of my country's construction industry. Among various connection methods, the prestressed concrete frame structure using post-tensioning method is a very advantageous structural form. Due to the unbonded tensioning method, the frame joints under earthquake loads have the characteristics of strong self-recovery ability and small residual deformation; at the same time, because the construction does not require on-site pouring of concrete, it has the characteristics of fast construction and is suitable for industrial production. In order to make up for the insufficient energy consumption capacity, energy con...
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IPC IPC(8): G06F30/13G06F119/14
CPCG06F30/13G06F2119/14Y02T90/00
Inventor 张晨蒋泉徐勋倩葛文璇吴坤王海霞
Owner NANTONG UNIVERSITY