Design and calculation method for additionally arranging middle support arm to construct three support arms of arc door based on inclined support arm
A calculation method, the technology of the oblique arm, applied in the field of design and calculation of the arc door three-arm based on the addition of the middle arm based on the oblique arm, can solve the problems such as not covered
Pending Publication Date: 2021-01-08
SINOHYDRO BUREAU 11 CO LTD
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Problems solved by technology
[0004] The problem with the current calculation method is that because the upper and lower arms (axis) and the "bisector of the angle between the two arms" form the same plane
Therefore, the content of this patent has not yet covered the calculation method of the torsion angle and related angles when the rear end plate of the three-pronged arm is set at other different positions
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[0094] Such as Figure 1 to Figure 7 Shown, the present invention takes Honduras PATUCA Ⅲ hydropower station spillway 14m * 22m * 21.5m surface hole arc door construction project as example, the trident oblique branch wall arc gate of this engineering surface hole arc door; Design by a certain design institute in Guizhou Province, its basic The parameters are as follows: the radius of the outer edge of the arc door panel R = 27000mm, the distance between the hinges L = 12000mm, the span of the front end plate of the support arm l = 8534.83mm, the height from the outer edge of the arc door panel to the front end plate of the support arm h = 1820mm, on the arc door The arc length L of the outer edge of the panel corresponding to the support arm 6 and the middle support arm 7 1 =7465mm, the arc length L of the outer edge of the panel corresponding to the middle arm 7 and the lower arm 8 of the arc door 2 =5260mm, the height of the hinge plus the thickness of the rear end plate H...
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The invention provides a design and calculation method for additionally arranging a middle support arm to construct three support arms of an arc door based on an inclined support arm, which is characterized by comprising the following steps of: 1, designing a three-support-arm structure; 2, establishing a three-dimensional structure algorithm of the three support arms according to the three-support-arm structure designed in the step 1; 3, deriving a torsion angle calculation formula of the upper support arm; step 4, deriving torsion angle calculation of the middle support arm and the like; theinvention has the advantages that the method can be simultaneously suitable for calculating two conditions that the included angles of the upper support arm, the lower support arm and the middle support arm are unequal or equal, the condition that the included angles of the upper support arm, the lower support arm and the middle support arm are calculated inaccurately in the past is overcome, andan accurate, simple, convenient and practical design and calculation method for additionally arranging the middle support arm to construct three support arms of the arc door based on the inclined support arm.
Description
technical field [0001] The invention relates to the technical field of hydraulic metal structure manufacturing, in particular to a design and calculation method for constructing three arms of an arc gate based on an oblique arm and adding a middle arm. Background technique [0002] In hydropower projects, the curved gate adopts an inclined arm structure. When the arm is connected horizontally to the main beam, detailed calculation and processing must be performed on the vertical section of the bisector of the two arms at the hinge. [0003] When the size of the orifice is large, the height of the arc gate increases accordingly, and the structure of the upper and lower inclined arms cannot meet the requirements of bearing capacity and stability. In recent years, a single-sided inclined arm structure composed of three arms has appeared for super For the convenience of distinguishing large arc gates, the oblique arm structure composed of three arms is referred to as the trident...
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IPC IPC(8): G06F30/17G06F30/20G06F119/18
CPCG06F30/17G06F30/20G06F2119/18
Inventor 卢俊生孙建国李有道秦红兵刘栋
Owner SINOHYDRO BUREAU 11 CO LTD