Spatial Orientation Construction Method of Prestressed Tendons in Dome Structure
A technology of prestressed tendons and construction methods, which is applied in building construction, processing of building materials, construction, etc. It can solve the problems of unguaranteed construction quality of prestressed steel bars, inability to guarantee the safety and reliability of dome structures, and complex construction positioning, etc. problems, to achieve the effect of saving construction period, high feasibility and simple operation
Inactive Publication Date: 2016-06-08
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +2
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Problems solved by technology
However, due to the complex construction and positioning of the prestressed tendons passing through the dome, even the same prestressed tendon will be divided into multiple sections of non-planar straight lines and curves in the dome, which brings many difficulties to the actual construction
If the location of the prestressed tendons is inaccurate, the construction quality of the prestressed reinforcement on site cannot be guaranteed, and the safety and reliability of the dome structure cannot be guaranteed.
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[0040] The plane of the prestressed tendon passing through the dome of a nuclear power project is as follows Figure 4 As shown, there are a total of 180 prestressed tendons 1, each arranged at an average of 2°, numbered 1-180. The prestressed tendons 1 passing through the dome are two orthogonal layers. There are 52 prestressed reinforcements 1.1 in the lower layer, 26 on each side passing through opposite directions, all along the directions of 60° and 240° (coordinate axis YY direction); the upper layer of prestressed reinforcements 1.2 There are 52 in total, 26 on each side passing through each other, all along the directions of 150° and 330° (coordinate axis XX direction), perpendicular to the prestressed tendons in the directions of 60° and 240°.
[0041] Establish an overall three-direction Cartesian coordinate system X, Y, and Z, where X is 90° and 270°; Y is 0° and 180°; Z is vertical to the XY plane, which conforms to the right-hand rule.
[0042] The local plane Ca...
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The invention discloses a space positioning construction method for a pre-stressing tendon of a dome structure. The space positioning of the pre-stressing tendon can be accurately constructed according to the method. The method comprises the following steps of sequentially dividing the pre-stressing tendon of the dome structure into four sections namely L1, L2, L3 and L4; setting a horizontal reference surface and a global coordinate system; setting each index; establishing local rectangular plane coordinate systems XX and YY according to the pre-stressing tendon to obtain the coordinate of each point of the pre-stressing tendon under the local rectangular plane coordinate systems; acquiring the coordinates of global coordinate X and Y axes through a coordinate transformation formula; calculating the four sections to obtain the coordinate of a Z axis; sequentially connecting all sampling points to obtain L1, L2, L3 and L4; finally, acquiring a space curve. The pre-stressing tendon of the dome structure is creatively divided into different positioning sections according to a spatial form, different positioning constructions are carried out according to the positioning sections, the operation is simple, the feasibility is high, an obtained analysis result meets the stress and construction requirements, and the method can be widely applied to structural engineering for arranging the pre-stressing tendon on a dome.
Description
technical field [0001] The invention belongs to the technical field of construction engineering, in particular to a space positioning construction method for positioning prestressed tendons of a dome structure. Background technique [0002] Due to its unique advantages, buildings with dome structures are widely used in commercial, military and civil buildings at this stage, especially in the petrochemical industry and nuclear power plant industry. Buildings with dome structures are often used to store radiation-prone, flammable, explosive, and toxic media. Once the structure is damaged, a large amount of flammable and toxic liquids will leak or burn, which may lead to devastating disasters. Therefore, with the development of the construction industry, the volume of the building structure increases, and the safety and reliability of the dome structure in use is extremely important. In the structural design, in order to meet the scientific and reliable design requirements, th...
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IPC IPC(8): E04G21/12
Inventor 王冬雁赵志海李政刘军刘柏粦姜会浩李振宝林树潮
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION